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1 | package DB; |
2 | |
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3 | # Debugger for Perl 5.00x; perl5db.pl patch level: |
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4 | |
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5 | $VERSION = 1.12; |
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6 | $header = "perl5db.pl version $VERSION"; |
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7 | |
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8 | # |
9 | # This file is automatically included if you do perl -d. |
10 | # It's probably not useful to include this yourself. |
11 | # |
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12 | # Perl supplies the values for %sub. It effectively inserts |
13 | # a &DB'DB(); in front of every place that can have a |
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14 | # breakpoint. Instead of a subroutine call it calls &DB::sub with |
15 | # $DB::sub being the called subroutine. It also inserts a BEGIN |
16 | # {require 'perl5db.pl'} before the first line. |
17 | # |
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18 | # After each `require'd file is compiled, but before it is executed, a |
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19 | # call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the |
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20 | # $filename is the expanded name of the `require'd file (as found as |
21 | # value of %INC). |
22 | # |
23 | # Additional services from Perl interpreter: |
24 | # |
25 | # if caller() is called from the package DB, it provides some |
26 | # additional data. |
27 | # |
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28 | # The array @{$main::{'_<'.$filename}} is the line-by-line contents of |
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29 | # $filename. |
30 | # |
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31 | # The hash %{'_<'.$filename} contains breakpoints and action (it is |
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32 | # keyed by line number), and individual entries are settable (as |
33 | # opposed to the whole hash). Only true/false is important to the |
34 | # interpreter, though the values used by perl5db.pl have the form |
35 | # "$break_condition\0$action". Values are magical in numeric context. |
36 | # |
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37 | # The scalar ${'_<'.$filename} contains $filename. |
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38 | # |
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39 | # Note that no subroutine call is possible until &DB::sub is defined |
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40 | # (for subroutines defined outside of the package DB). In fact the same is |
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41 | # true if $deep is not defined. |
42 | # |
43 | # $Log: perldb.pl,v $ |
44 | |
45 | # |
46 | # At start reads $rcfile that may set important options. This file |
47 | # may define a subroutine &afterinit that will be executed after the |
48 | # debugger is initialized. |
49 | # |
50 | # After $rcfile is read reads environment variable PERLDB_OPTS and parses |
51 | # it as a rest of `O ...' line in debugger prompt. |
52 | # |
53 | # The options that can be specified only at startup: |
54 | # [To set in $rcfile, call &parse_options("optionName=new_value").] |
55 | # |
56 | # TTY - the TTY to use for debugging i/o. |
57 | # |
58 | # noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set |
59 | # uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using |
60 | # Term::Rendezvous. Current variant is to have the name of TTY in this |
61 | # file. |
62 | # |
63 | # ReadLine - If false, dummy ReadLine is used, so you can debug |
64 | # ReadLine applications. |
65 | # |
66 | # NonStop - if true, no i/o is performed until interrupt. |
67 | # |
68 | # LineInfo - file or pipe to print line number info to. If it is a |
69 | # pipe, a short "emacs like" message is used. |
70 | # |
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71 | # RemotePort - host:port to connect to on remote host for remote debugging. |
72 | # |
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73 | # Example $rcfile: (delete leading hashes!) |
74 | # |
75 | # &parse_options("NonStop=1 LineInfo=db.out"); |
76 | # sub afterinit { $trace = 1; } |
77 | # |
78 | # The script will run without human intervention, putting trace |
79 | # information into db.out. (If you interrupt it, you would better |
80 | # reset LineInfo to something "interactive"!) |
81 | # |
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82 | ################################################################## |
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83 | |
84 | # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) |
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85 | |
86 | # modified Perl debugger, to be run from Emacs in perldb-mode |
87 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 |
88 | # Johan Vromans -- upgrade to 4.0 pl 10 |
89 | # Ilya Zakharevich -- patches after 5.001 (and some before ;-) |
90 | |
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91 | # Changelog: |
92 | |
93 | # A lot of things changed after 0.94. First of all, core now informs |
94 | # debugger about entry into XSUBs, overloaded operators, tied operations, |
95 | # BEGIN and END. Handy with `O f=2'. |
96 | |
97 | # This can make debugger a little bit too verbose, please be patient |
98 | # and report your problems promptly. |
99 | |
100 | # Now the option frame has 3 values: 0,1,2. |
101 | |
102 | # Note that if DESTROY returns a reference to the object (or object), |
103 | # the deletion of data may be postponed until the next function call, |
104 | # due to the need to examine the return value. |
105 | |
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106 | # Changes: 0.95: `v' command shows versions. |
107 | # Changes: 0.96: `v' command shows version of readline. |
108 | # primitive completion works (dynamic variables, subs for `b' and `l', |
109 | # options). Can `p %var' |
110 | # Better help (`h <' now works). New commands <<, >>, {, {{. |
111 | # {dump|print}_trace() coded (to be able to do it from <<cmd). |
112 | # `c sub' documented. |
113 | # At last enough magic combined to stop after the end of debuggee. |
114 | # !! should work now (thanks to Emacs bracket matching an extra |
115 | # `]' in a regexp is caught). |
116 | # `L', `D' and `A' span files now (as documented). |
117 | # Breakpoints in `require'd code are possible (used in `R'). |
118 | # Some additional words on internal work of debugger. |
119 | # `b load filename' implemented. |
120 | # `b postpone subr' implemented. |
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121 | # now only `q' exits debugger (overwritable on $inhibit_exit). |
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122 | # When restarting debugger breakpoints/actions persist. |
123 | # Buglet: When restarting debugger only one breakpoint/action per |
124 | # autoloaded function persists. |
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125 | # Changes: 0.97: NonStop will not stop in at_exit(). |
126 | # Option AutoTrace implemented. |
127 | # Trace printed differently if frames are printed too. |
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128 | # new `inhibitExit' option. |
129 | # printing of a very long statement interruptible. |
130 | # Changes: 0.98: New command `m' for printing possible methods |
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131 | # 'l -' is a synonym for `-'. |
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132 | # Cosmetic bugs in printing stack trace. |
133 | # `frame' & 8 to print "expanded args" in stack trace. |
134 | # Can list/break in imported subs. |
135 | # new `maxTraceLen' option. |
136 | # frame & 4 and frame & 8 granted. |
137 | # new command `m' |
138 | # nonstoppable lines do not have `:' near the line number. |
139 | # `b compile subname' implemented. |
140 | # Will not use $` any more. |
141 | # `-' behaves sane now. |
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142 | # Changes: 0.99: Completion for `f', `m'. |
143 | # `m' will remove duplicate names instead of duplicate functions. |
144 | # `b load' strips trailing whitespace. |
145 | # completion ignores leading `|'; takes into account current package |
146 | # when completing a subroutine name (same for `l'). |
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147 | # Changes: 1.07: Many fixed by tchrist 13-March-2000 |
148 | # BUG FIXES: |
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149 | # + Added bare minimal security checks on perldb rc files, plus |
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150 | # comments on what else is needed. |
151 | # + Fixed the ornaments that made "|h" completely unusable. |
152 | # They are not used in print_help if they will hurt. Strip pod |
153 | # if we're paging to less. |
154 | # + Fixed mis-formatting of help messages caused by ornaments |
155 | # to restore Larry's original formatting. |
156 | # + Fixed many other formatting errors. The code is still suboptimal, |
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157 | # and needs a lot of work at restructuring. It's also misindented |
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158 | # in many places. |
159 | # + Fixed bug where trying to look at an option like your pager |
160 | # shows "1". |
161 | # + Fixed some $? processing. Note: if you use csh or tcsh, you will |
162 | # lose. You should consider shell escapes not using their shell, |
163 | # or else not caring about detailed status. This should really be |
164 | # unified into one place, too. |
165 | # + Fixed bug where invisible trailing whitespace on commands hoses you, |
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166 | # tricking Perl into thinking you weren't calling a debugger command! |
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167 | # + Fixed bug where leading whitespace on commands hoses you. (One |
168 | # suggests a leading semicolon or any other irrelevant non-whitespace |
169 | # to indicate literal Perl code.) |
170 | # + Fixed bugs that ate warnings due to wrong selected handle. |
171 | # + Fixed a precedence bug on signal stuff. |
172 | # + Fixed some unseemly wording. |
173 | # + Fixed bug in help command trying to call perl method code. |
174 | # + Fixed to call dumpvar from exception handler. SIGPIPE killed us. |
175 | # ENHANCEMENTS: |
176 | # + Added some comments. This code is still nasty spaghetti. |
177 | # + Added message if you clear your pre/post command stacks which was |
178 | # very easy to do if you just typed a bare >, <, or {. (A command |
179 | # without an argument should *never* be a destructive action; this |
180 | # API is fundamentally screwed up; likewise option setting, which |
181 | # is equally buggered.) |
182 | # + Added command stack dump on argument of "?" for >, <, or {. |
183 | # + Added a semi-built-in doc viewer command that calls man with the |
184 | # proper %Config::Config path (and thus gets caching, man -k, etc), |
185 | # or else perldoc on obstreperous platforms. |
186 | # + Added to and rearranged the help information. |
187 | # + Detected apparent misuse of { ... } to declare a block; this used |
188 | # to work but now is a command, and mysteriously gave no complaint. |
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189 | # |
190 | # Changes: 1.08: Apr 25, 2001 Jon Eveland <jweveland@yahoo.com> |
191 | # BUG FIX: |
192 | # + This patch to perl5db.pl cleans up formatting issues on the help |
193 | # summary (h h) screen in the debugger. Mostly columnar alignment |
194 | # issues, plus converted the printed text to use all spaces, since |
195 | # tabs don't seem to help much here. |
196 | # |
197 | # Changes: 1.09: May 19, 2001 Ilya Zakharevich <ilya@math.ohio-state.edu> |
198 | # 0) Minor bugs corrected; |
199 | # a) Support for auto-creation of new TTY window on startup, either |
200 | # unconditionally, or if started as a kid of another debugger session; |
201 | # b) New `O'ption CreateTTY |
202 | # I<CreateTTY> bits control attempts to create a new TTY on events: |
203 | # 1: on fork() 2: debugger is started inside debugger |
204 | # 4: on startup |
205 | # c) Code to auto-create a new TTY window on OS/2 (currently one one |
206 | # extra window per session - need named pipes to have more...); |
207 | # d) Simplified interface for custom createTTY functions (with a backward |
208 | # compatibility hack); now returns the TTY name to use; return of '' |
209 | # means that the function reset the I/O handles itself; |
210 | # d') Better message on the semantic of custom createTTY function; |
211 | # e) Convert the existing code to create a TTY into a custom createTTY |
212 | # function; |
213 | # f) Consistent support for TTY names of the form "TTYin,TTYout"; |
214 | # g) Switch line-tracing output too to the created TTY window; |
215 | # h) make `b fork' DWIM with CORE::GLOBAL::fork; |
216 | # i) High-level debugger API cmd_*(): |
217 | # cmd_b_load($filenamepart) # b load filenamepart |
218 | # cmd_b_line($lineno [, $cond]) # b lineno [cond] |
219 | # cmd_b_sub($sub [, $cond]) # b sub [cond] |
220 | # cmd_stop() # Control-C |
221 | # cmd_d($lineno) # d lineno |
222 | # The cmd_*() API returns FALSE on failure; in this case it outputs |
223 | # the error message to the debugging output. |
224 | # j) Low-level debugger API |
225 | # break_on_load($filename) # b load filename |
226 | # @files = report_break_on_load() # List files with load-breakpoints |
227 | # breakable_line_in_filename($name, $from [, $to]) |
228 | # # First breakable line in the |
229 | # # range $from .. $to. $to defaults |
230 | # # to $from, and may be less than $to |
231 | # breakable_line($from [, $to]) # Same for the current file |
232 | # break_on_filename_line($name, $lineno [, $cond]) |
233 | # # Set breakpoint,$cond defaults to 1 |
234 | # break_on_filename_line_range($name, $from, $to [, $cond]) |
235 | # # As above, on the first |
236 | # # breakable line in range |
237 | # break_on_line($lineno [, $cond]) # As above, in the current file |
238 | # break_subroutine($sub [, $cond]) # break on the first breakable line |
239 | # ($name, $from, $to) = subroutine_filename_lines($sub) |
240 | # # The range of lines of the text |
241 | # The low-level API returns TRUE on success, and die()s on failure. |
242 | # |
243 | # Changes: 1.10: May 23, 2001 Daniel Lewart <d-lewart@uiuc.edu> |
244 | # BUG FIXES: |
245 | # + Fixed warnings generated by "perl -dWe 42" |
246 | # + Corrected spelling errors |
247 | # + Squeezed Help (h) output into 80 columns |
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248 | # |
249 | # Changes: 1.11: May 24, 2001 David Dyck <dcd@tc.fluke.com> |
250 | # + Made "x @INC" work like it used to |
251 | # |
252 | # Changes: 1.12: May 24, 2001 Daniel Lewart <d-lewart@uiuc.edu> |
253 | # + Fixed warnings generated by "O" (Show debugger options) |
254 | # + Fixed warnings generated by "p 42" (Print expression) |
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255 | |
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256 | #################################################################### |
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257 | |
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258 | # Needed for the statement after exec(): |
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259 | |
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260 | BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN. |
261 | local($^W) = 0; # Switch run-time warnings off during init. |
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262 | warn ( # Do not ;-) |
263 | $dumpvar::hashDepth, |
264 | $dumpvar::arrayDepth, |
265 | $dumpvar::dumpDBFiles, |
266 | $dumpvar::dumpPackages, |
267 | $dumpvar::quoteHighBit, |
268 | $dumpvar::printUndef, |
269 | $dumpvar::globPrint, |
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270 | $dumpvar::usageOnly, |
271 | @ARGS, |
272 | $Carp::CarpLevel, |
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273 | $panic, |
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274 | $second_time, |
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275 | ) if 0; |
276 | |
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277 | # Command-line + PERLLIB: |
278 | @ini_INC = @INC; |
279 | |
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280 | # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! |
281 | |
282 | $trace = $signal = $single = 0; # Uninitialized warning suppression |
283 | # (local $^W cannot help - other packages!). |
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284 | $inhibit_exit = $option{PrintRet} = 1; |
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285 | |
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286 | @options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused |
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287 | compactDump veryCompact quote HighBit undefPrint |
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288 | globPrint PrintRet UsageOnly frame AutoTrace |
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289 | TTY noTTY ReadLine NonStop LineInfo maxTraceLen |
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290 | recallCommand ShellBang pager tkRunning ornaments |
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291 | signalLevel warnLevel dieLevel inhibit_exit |
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292 | ImmediateStop bareStringify CreateTTY |
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293 | RemotePort); |
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294 | |
295 | %optionVars = ( |
296 | hashDepth => \$dumpvar::hashDepth, |
297 | arrayDepth => \$dumpvar::arrayDepth, |
298 | DumpDBFiles => \$dumpvar::dumpDBFiles, |
299 | DumpPackages => \$dumpvar::dumpPackages, |
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300 | DumpReused => \$dumpvar::dumpReused, |
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301 | HighBit => \$dumpvar::quoteHighBit, |
302 | undefPrint => \$dumpvar::printUndef, |
303 | globPrint => \$dumpvar::globPrint, |
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304 | UsageOnly => \$dumpvar::usageOnly, |
305 | CreateTTY => \$CreateTTY, |
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306 | bareStringify => \$dumpvar::bareStringify, |
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307 | frame => \$frame, |
308 | AutoTrace => \$trace, |
309 | inhibit_exit => \$inhibit_exit, |
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310 | maxTraceLen => \$maxtrace, |
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311 | ImmediateStop => \$ImmediateStop, |
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312 | RemotePort => \$remoteport, |
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313 | ); |
314 | |
315 | %optionAction = ( |
316 | compactDump => \&dumpvar::compactDump, |
317 | veryCompact => \&dumpvar::veryCompact, |
318 | quote => \&dumpvar::quote, |
319 | TTY => \&TTY, |
320 | noTTY => \&noTTY, |
321 | ReadLine => \&ReadLine, |
322 | NonStop => \&NonStop, |
323 | LineInfo => \&LineInfo, |
324 | recallCommand => \&recallCommand, |
325 | ShellBang => \&shellBang, |
326 | pager => \&pager, |
327 | signalLevel => \&signalLevel, |
328 | warnLevel => \&warnLevel, |
329 | dieLevel => \&dieLevel, |
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330 | tkRunning => \&tkRunning, |
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331 | ornaments => \&ornaments, |
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332 | RemotePort => \&RemotePort, |
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333 | ); |
334 | |
335 | %optionRequire = ( |
336 | compactDump => 'dumpvar.pl', |
337 | veryCompact => 'dumpvar.pl', |
338 | quote => 'dumpvar.pl', |
339 | ); |
340 | |
341 | # These guys may be defined in $ENV{PERL5DB} : |
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342 | $rl = 1 unless defined $rl; |
343 | $warnLevel = 0 unless defined $warnLevel; |
344 | $dieLevel = 0 unless defined $dieLevel; |
345 | $signalLevel = 1 unless defined $signalLevel; |
346 | $pre = [] unless defined $pre; |
347 | $post = [] unless defined $post; |
348 | $pretype = [] unless defined $pretype; |
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349 | $CreateTTY = 3 unless defined $CreateTTY; |
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350 | |
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351 | warnLevel($warnLevel); |
352 | dieLevel($dieLevel); |
353 | signalLevel($signalLevel); |
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354 | |
355 | &pager( |
356 | (defined($ENV{PAGER}) |
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357 | ? $ENV{PAGER} |
358 | : ($^O eq 'os2' |
359 | ? 'cmd /c more' |
360 | : 'more'))) unless defined $pager; |
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361 | setman(); |
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362 | &recallCommand("!") unless defined $prc; |
363 | &shellBang("!") unless defined $psh; |
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364 | sethelp(); |
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365 | $maxtrace = 400 unless defined $maxtrace; |
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366 | $ini_pids = $ENV{PERLDB_PIDS}; |
367 | if (defined $ENV{PERLDB_PIDS}) { |
368 | $pids = "[$ENV{PERLDB_PIDS}]"; |
369 | $ENV{PERLDB_PIDS} .= "->$$"; |
370 | $term_pid = -1; |
371 | } else { |
372 | $ENV{PERLDB_PIDS} = "$$"; |
373 | $pids = ''; |
374 | $term_pid = $$; |
375 | } |
376 | $pidprompt = ''; |
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377 | *emacs = $slave_editor if $slave_editor; # May be used in afterinit()... |
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378 | |
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379 | if (-e "/dev/tty") { # this is the wrong metric! |
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380 | $rcfile=".perldb"; |
381 | } else { |
382 | $rcfile="perldb.ini"; |
383 | } |
384 | |
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385 | # This isn't really safe, because there's a race |
386 | # between checking and opening. The solution is to |
387 | # open and fstat the handle, but then you have to read and |
388 | # eval the contents. But then the silly thing gets |
389 | # your lexical scope, which is unfortunately at best. |
390 | sub safe_do { |
391 | my $file = shift; |
392 | |
393 | # Just exactly what part of the word "CORE::" don't you understand? |
394 | local $SIG{__WARN__}; |
395 | local $SIG{__DIE__}; |
396 | |
397 | unless (is_safe_file($file)) { |
398 | CORE::warn <<EO_GRIPE; |
399 | perldb: Must not source insecure rcfile $file. |
400 | You or the superuser must be the owner, and it must not |
401 | be writable by anyone but its owner. |
402 | EO_GRIPE |
403 | return; |
404 | } |
405 | |
406 | do $file; |
407 | CORE::warn("perldb: couldn't parse $file: $@") if $@; |
408 | } |
409 | |
410 | |
411 | # Verifies that owner is either real user or superuser and that no |
412 | # one but owner may write to it. This function is of limited use |
413 | # when called on a path instead of upon a handle, because there are |
414 | # no guarantees that filename (by dirent) whose file (by ino) is |
415 | # eventually accessed is the same as the one tested. |
416 | # Assumes that the file's existence is not in doubt. |
417 | sub is_safe_file { |
418 | my $path = shift; |
419 | stat($path) || return; # mysteriously vaporized |
420 | my($dev,$ino,$mode,$nlink,$uid,$gid) = stat(_); |
421 | |
422 | return 0 if $uid != 0 && $uid != $<; |
423 | return 0 if $mode & 022; |
424 | return 1; |
425 | } |
426 | |
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427 | if (-f $rcfile) { |
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428 | safe_do("./$rcfile"); |
429 | } |
430 | elsif (defined $ENV{HOME} && -f "$ENV{HOME}/$rcfile") { |
431 | safe_do("$ENV{HOME}/$rcfile"); |
432 | } |
433 | elsif (defined $ENV{LOGDIR} && -f "$ENV{LOGDIR}/$rcfile") { |
434 | safe_do("$ENV{LOGDIR}/$rcfile"); |
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435 | } |
436 | |
437 | if (defined $ENV{PERLDB_OPTS}) { |
438 | parse_options($ENV{PERLDB_OPTS}); |
439 | } |
440 | |
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441 | if ( not defined &get_fork_TTY and defined $ENV{TERM} and $ENV{TERM} eq 'xterm' |
442 | and defined $ENV{WINDOWID} and defined $ENV{DISPLAY} ) { # _inside_ XTERM? |
443 | *get_fork_TTY = \&xterm_get_fork_TTY; |
444 | } elsif ($^O eq 'os2') { |
445 | *get_fork_TTY = \&os2_get_fork_TTY; |
446 | } |
447 | |
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448 | # Here begin the unreadable code. It needs fixing. |
449 | |
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450 | if (exists $ENV{PERLDB_RESTART}) { |
451 | delete $ENV{PERLDB_RESTART}; |
452 | # $restart = 1; |
453 | @hist = get_list('PERLDB_HIST'); |
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454 | %break_on_load = get_list("PERLDB_ON_LOAD"); |
455 | %postponed = get_list("PERLDB_POSTPONE"); |
456 | my @had_breakpoints= get_list("PERLDB_VISITED"); |
457 | for (0 .. $#had_breakpoints) { |
0c395bd7 |
458 | my %pf = get_list("PERLDB_FILE_$_"); |
459 | $postponed_file{$had_breakpoints[$_]} = \%pf if %pf; |
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460 | } |
461 | my %opt = get_list("PERLDB_OPT"); |
462 | my ($opt,$val); |
463 | while (($opt,$val) = each %opt) { |
464 | $val =~ s/[\\\']/\\$1/g; |
465 | parse_options("$opt'$val'"); |
466 | } |
467 | @INC = get_list("PERLDB_INC"); |
468 | @ini_INC = @INC; |
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469 | $pretype = [get_list("PERLDB_PRETYPE")]; |
470 | $pre = [get_list("PERLDB_PRE")]; |
471 | $post = [get_list("PERLDB_POST")]; |
472 | @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead); |
54d04a52 |
473 | } |
474 | |
d338d6fe |
475 | if ($notty) { |
476 | $runnonstop = 1; |
477 | } else { |
055fd3a9 |
478 | # Is Perl being run from a slave editor or graphical debugger? |
479 | $slave_editor = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); |
480 | $rl = 0, shift(@main::ARGV) if $slave_editor; |
d338d6fe |
481 | |
482 | #require Term::ReadLine; |
483 | |
4fabb596 |
484 | if ($^O eq 'cygwin') { |
8736538c |
485 | # /dev/tty is binary. use stdin for textmode |
486 | undef $console; |
487 | } elsif (-e "/dev/tty") { |
d338d6fe |
488 | $console = "/dev/tty"; |
39e571d4 |
489 | } elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') { |
d338d6fe |
490 | $console = "con"; |
6d697788 |
491 | } elsif ($^O eq 'MacOS') { |
492 | if ($MacPerl::Version !~ /MPW/) { |
493 | $console = "Dev:Console:Perl Debug"; # Separate window for application |
494 | } else { |
495 | $console = "Dev:Console"; |
496 | } |
d338d6fe |
497 | } else { |
498 | $console = "sys\$command"; |
499 | } |
500 | |
055fd3a9 |
501 | if (($^O eq 'MSWin32') and ($slave_editor or defined $ENV{EMACS})) { |
96774cc9 |
502 | $console = undef; |
503 | } |
504 | |
d338d6fe |
505 | # Around a bug: |
055fd3a9 |
506 | if (defined $ENV{OS2_SHELL} and ($slave_editor or $ENV{WINDOWID})) { # In OS/2 |
d338d6fe |
507 | $console = undef; |
508 | } |
509 | |
4d2c4e07 |
510 | if ($^O eq 'epoc') { |
511 | $console = undef; |
512 | } |
513 | |
d338d6fe |
514 | $console = $tty if defined $tty; |
515 | |
363b4d59 |
516 | if (defined $remoteport) { |
517 | require IO::Socket; |
518 | $OUT = new IO::Socket::INET( Timeout => '10', |
519 | PeerAddr => $remoteport, |
520 | Proto => 'tcp', |
521 | ); |
0aa2ae9a |
522 | if (!$OUT) { die "Unable to connect to remote host: $remoteport\n"; } |
363b4d59 |
523 | $IN = $OUT; |
f1583d8f |
524 | } elsif ($CreateTTY & 4) { |
525 | create_IN_OUT(4); |
526 | } else { |
363b4d59 |
527 | if (defined $console) { |
04e43a21 |
528 | my ($i, $o) = split /,/, $console; |
f1583d8f |
529 | $o = $i unless defined $o; |
530 | open(IN,"+<$i") || open(IN,"<$i") || open(IN,"<&STDIN"); |
531 | open(OUT,"+>$o") || open(OUT,">$o") || open(OUT,">&STDERR") |
363b4d59 |
532 | || open(OUT,">&STDOUT"); # so we don't dongle stdout |
533 | } else { |
534 | open(IN,"<&STDIN"); |
535 | open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout |
536 | $console = 'STDIN/OUT'; |
537 | } |
538 | # so open("|more") can read from STDOUT and so we don't dingle stdin |
539 | $IN = \*IN; |
d338d6fe |
540 | |
363b4d59 |
541 | $OUT = \*OUT; |
542 | } |
5b17b83d |
543 | my $previous = select($OUT); |
d338d6fe |
544 | $| = 1; # for DB::OUT |
5b17b83d |
545 | select($previous); |
d338d6fe |
546 | |
547 | $LINEINFO = $OUT unless defined $LINEINFO; |
548 | $lineinfo = $console unless defined $lineinfo; |
549 | |
d338d6fe |
550 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
551 | unless ($runnonstop) { |
f1583d8f |
552 | if ($term_pid eq '-1') { |
553 | print $OUT "\nDaughter DB session started...\n"; |
554 | } else { |
555 | print $OUT "\nLoading DB routines from $header\n"; |
556 | print $OUT ("Editor support ", |
557 | $slave_editor ? "enabled" : "available", |
558 | ".\n"); |
559 | print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n"; |
560 | } |
d338d6fe |
561 | } |
562 | } |
563 | |
564 | @ARGS = @ARGV; |
565 | for (@args) { |
566 | s/\'/\\\'/g; |
567 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
568 | } |
569 | |
570 | if (defined &afterinit) { # May be defined in $rcfile |
571 | &afterinit(); |
572 | } |
573 | |
43aed9ee |
574 | $I_m_init = 1; |
575 | |
d338d6fe |
576 | ############################################################ Subroutines |
577 | |
d338d6fe |
578 | sub DB { |
36477c24 |
579 | # _After_ the perl program is compiled, $single is set to 1: |
580 | if ($single and not $second_time++) { |
581 | if ($runnonstop) { # Disable until signal |
f8b5b99c |
582 | for ($i=0; $i <= $stack_depth; ) { |
d338d6fe |
583 | $stack[$i++] &= ~1; |
584 | } |
54d04a52 |
585 | $single = 0; |
36477c24 |
586 | # return; # Would not print trace! |
3aefca04 |
587 | } elsif ($ImmediateStop) { |
588 | $ImmediateStop = 0; |
589 | $signal = 1; |
54d04a52 |
590 | } |
d338d6fe |
591 | } |
36477c24 |
592 | $runnonstop = 0 if $single or $signal; # Disable it if interactive. |
d338d6fe |
593 | &save; |
d338d6fe |
594 | ($package, $filename, $line) = caller; |
54d04a52 |
595 | $filename_ini = $filename; |
22fae026 |
596 | $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . |
d338d6fe |
597 | "package $package;"; # this won't let them modify, alas |
8ebc5c01 |
598 | local(*dbline) = $main::{'_<' . $filename}; |
d338d6fe |
599 | $max = $#dbline; |
04e43a21 |
600 | if ($dbline{$line} && (($stop,$action) = split(/\0/,$dbline{$line}))) { |
d338d6fe |
601 | if ($stop eq '1') { |
602 | $signal |= 1; |
54d04a52 |
603 | } elsif ($stop) { |
3f521411 |
604 | $evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval; |
d338d6fe |
605 | $dbline{$line} =~ s/;9($|\0)/$1/; |
606 | } |
607 | } |
36477c24 |
608 | my $was_signal = $signal; |
6027b9a3 |
609 | if ($trace & 2) { |
610 | for (my $n = 0; $n <= $#to_watch; $n++) { |
611 | $evalarg = $to_watch[$n]; |
ed0d1bf7 |
612 | local $onetimeDump; # Do not output results |
6027b9a3 |
613 | my ($val) = &eval; # Fix context (&eval is doing array)? |
614 | $val = ( (defined $val) ? "'$val'" : 'undef' ); |
615 | if ($val ne $old_watch[$n]) { |
616 | $signal = 1; |
617 | print $OUT <<EOP; |
405ff068 |
618 | Watchpoint $n:\t$to_watch[$n] changed: |
619 | old value:\t$old_watch[$n] |
620 | new value:\t$val |
6027b9a3 |
621 | EOP |
622 | $old_watch[$n] = $val; |
623 | } |
624 | } |
625 | } |
626 | if ($trace & 4) { # User-installed watch |
627 | return if watchfunction($package, $filename, $line) |
628 | and not $single and not $was_signal and not ($trace & ~4); |
629 | } |
630 | $was_signal = $signal; |
36477c24 |
631 | $signal = 0; |
6027b9a3 |
632 | if ($single || ($trace & 1) || $was_signal) { |
055fd3a9 |
633 | if ($slave_editor) { |
54d04a52 |
634 | $position = "\032\032$filename:$line:0\n"; |
f1583d8f |
635 | print_lineinfo($position); |
405ff068 |
636 | } elsif ($package eq 'DB::fake') { |
65c9c81d |
637 | $term || &setterm; |
405ff068 |
638 | print_help(<<EOP); |
639 | Debugged program terminated. Use B<q> to quit or B<R> to restart, |
640 | use B<O> I<inhibit_exit> to avoid stopping after program termination, |
641 | B<h q>, B<h R> or B<h O> to get additional info. |
642 | EOP |
643 | $package = 'main'; |
363b4d59 |
644 | $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . |
405ff068 |
645 | "package $package;"; # this won't let them modify, alas |
d338d6fe |
646 | } else { |
647 | $sub =~ s/\'/::/; |
648 | $prefix = $sub =~ /::/ ? "" : "${'package'}::"; |
649 | $prefix .= "$sub($filename:"; |
650 | $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); |
651 | if (length($prefix) > 30) { |
54d04a52 |
652 | $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; |
d338d6fe |
653 | $prefix = ""; |
654 | $infix = ":\t"; |
655 | } else { |
656 | $infix = "):\t"; |
54d04a52 |
657 | $position = "$prefix$line$infix$dbline[$line]$after"; |
36477c24 |
658 | } |
659 | if ($frame) { |
f1583d8f |
660 | print_lineinfo(' ' x $stack_depth, "$line:\t$dbline[$line]$after"); |
36477c24 |
661 | } else { |
f1583d8f |
662 | print_lineinfo($position); |
d338d6fe |
663 | } |
664 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi |
665 | last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; |
36477c24 |
666 | last if $signal; |
d338d6fe |
667 | $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); |
54d04a52 |
668 | $incr_pos = "$prefix$i$infix$dbline[$i]$after"; |
54d04a52 |
669 | $position .= $incr_pos; |
36477c24 |
670 | if ($frame) { |
f1583d8f |
671 | print_lineinfo(' ' x $stack_depth, "$i:\t$dbline[$i]$after"); |
36477c24 |
672 | } else { |
f1583d8f |
673 | print_lineinfo($incr_pos); |
36477c24 |
674 | } |
d338d6fe |
675 | } |
676 | } |
677 | } |
678 | $evalarg = $action, &eval if $action; |
36477c24 |
679 | if ($single || $was_signal) { |
d338d6fe |
680 | local $level = $level + 1; |
e63173ce |
681 | foreach $evalarg (@$pre) { |
682 | &eval; |
683 | } |
f8b5b99c |
684 | print $OUT $stack_depth . " levels deep in subroutine calls!\n" |
d338d6fe |
685 | if $single & 4; |
686 | $start = $line; |
1d06cb2d |
687 | $incr = -1; # for backward motion. |
6657d1ba |
688 | @typeahead = (@$pretype, @typeahead); |
d338d6fe |
689 | CMD: |
690 | while (($term || &setterm), |
f1583d8f |
691 | ($term_pid == $$ or resetterm(1)), |
692 | defined ($cmd=&readline("$pidprompt DB" . ('<' x $level) . |
54d04a52 |
693 | ($#hist+1) . ('>' x $level) . |
055fd3a9 |
694 | " "))) |
695 | { |
d338d6fe |
696 | $single = 0; |
697 | $signal = 0; |
698 | $cmd =~ s/\\$/\n/ && do { |
54d04a52 |
699 | $cmd .= &readline(" cont: "); |
d338d6fe |
700 | redo CMD; |
701 | }; |
d338d6fe |
702 | $cmd =~ /^$/ && ($cmd = $laststep); |
703 | push(@hist,$cmd) if length($cmd) > 1; |
704 | PIPE: { |
3dcd9d33 |
705 | $cmd =~ s/^\s+//s; # trim annoying leading whitespace |
706 | $cmd =~ s/\s+$//s; # trim annoying trailing whitespace |
d338d6fe |
707 | ($i) = split(/\s+/,$cmd); |
055fd3a9 |
708 | if ($alias{$i}) { |
3dcd9d33 |
709 | # squelch the sigmangler |
710 | local $SIG{__DIE__}; |
711 | local $SIG{__WARN__}; |
055fd3a9 |
712 | eval "\$cmd =~ $alias{$i}"; |
3dcd9d33 |
713 | if ($@) { |
714 | print $OUT "Couldn't evaluate `$i' alias: $@"; |
715 | next CMD; |
716 | } |
055fd3a9 |
717 | } |
20928eff |
718 | $cmd =~ /^q$/ && ($fall_off_end = 1) && exit $?; |
d338d6fe |
719 | $cmd =~ /^h$/ && do { |
6027b9a3 |
720 | print_help($help); |
d338d6fe |
721 | next CMD; }; |
722 | $cmd =~ /^h\s+h$/ && do { |
6027b9a3 |
723 | print_help($summary); |
d338d6fe |
724 | next CMD; }; |
055fd3a9 |
725 | # support long commands; otherwise bogus errors |
726 | # happen when you ask for h on <CR> for example |
727 | $cmd =~ /^h\s+(\S.*)$/ && do { |
728 | my $asked = $1; # for proper errmsg |
729 | my $qasked = quotemeta($asked); # for searching |
730 | # XXX: finds CR but not <CR> |
731 | if ($help =~ /^<?(?:[IB]<)$qasked/m) { |
732 | while ($help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) { |
6027b9a3 |
733 | print_help($1); |
55497cff |
734 | } |
d338d6fe |
735 | } else { |
6027b9a3 |
736 | print_help("B<$asked> is not a debugger command.\n"); |
d338d6fe |
737 | } |
738 | next CMD; }; |
739 | $cmd =~ /^t$/ && do { |
3fbd6552 |
740 | $trace ^= 1; |
6027b9a3 |
741 | print $OUT "Trace = " . |
742 | (($trace & 1) ? "on" : "off" ) . "\n"; |
d338d6fe |
743 | next CMD; }; |
744 | $cmd =~ /^S(\s+(!)?(.+))?$/ && do { |
745 | $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; |
746 | foreach $subname (sort(keys %sub)) { |
747 | if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { |
748 | print $OUT $subname,"\n"; |
749 | } |
750 | } |
751 | next CMD; }; |
ee971a18 |
752 | $cmd =~ /^v$/ && do { |
753 | list_versions(); next CMD}; |
d338d6fe |
754 | $cmd =~ s/^X\b/V $package/; |
755 | $cmd =~ /^V$/ && do { |
756 | $cmd = "V $package"; }; |
757 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { |
758 | local ($savout) = select($OUT); |
759 | $packname = $1; |
760 | @vars = split(' ',$2); |
761 | do 'dumpvar.pl' unless defined &main::dumpvar; |
762 | if (defined &main::dumpvar) { |
54d04a52 |
763 | local $frame = 0; |
ee971a18 |
764 | local $doret = -2; |
055fd3a9 |
765 | # must detect sigpipe failures |
766 | eval { &main::dumpvar($packname,@vars) }; |
767 | if ($@) { |
768 | die unless $@ =~ /dumpvar print failed/; |
769 | } |
d338d6fe |
770 | } else { |
771 | print $OUT "dumpvar.pl not available.\n"; |
772 | } |
773 | select ($savout); |
774 | next CMD; }; |
775 | $cmd =~ s/^x\b/ / && do { # So that will be evaled |
1d06cb2d |
776 | $onetimeDump = 'dump'; }; |
777 | $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do { |
778 | methods($1); next CMD}; |
779 | $cmd =~ s/^m\b/ / && do { # So this will be evaled |
780 | $onetimeDump = 'methods'; }; |
d338d6fe |
781 | $cmd =~ /^f\b\s*(.*)/ && do { |
782 | $file = $1; |
477ea2b1 |
783 | $file =~ s/\s+$//; |
d338d6fe |
784 | if (!$file) { |
785 | print $OUT "The old f command is now the r command.\n"; |
786 | print $OUT "The new f command switches filenames.\n"; |
787 | next CMD; |
788 | } |
789 | if (!defined $main::{'_<' . $file}) { |
790 | if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ |
477ea2b1 |
791 | $try = substr($try,2); |
792 | print $OUT "Choosing $try matching `$file':\n"; |
793 | $file = $try; |
d338d6fe |
794 | }} |
795 | } |
796 | if (!defined $main::{'_<' . $file}) { |
04fb8f4b |
797 | print $OUT "No file matching `$file' is loaded.\n"; |
d338d6fe |
798 | next CMD; |
799 | } elsif ($file ne $filename) { |
8ebc5c01 |
800 | *dbline = $main::{'_<' . $file}; |
d338d6fe |
801 | $max = $#dbline; |
802 | $filename = $file; |
803 | $start = 1; |
804 | $cmd = "l"; |
477ea2b1 |
805 | } else { |
806 | print $OUT "Already in $file.\n"; |
807 | next CMD; |
808 | } |
809 | }; |
1d06cb2d |
810 | $cmd =~ s/^l\s+-\s*$/-/; |
83ee9e09 |
811 | $cmd =~ /^([lb])\b\s*(\$.*)/s && do { |
812 | $evalarg = $2; |
813 | my ($s) = &eval; |
814 | print($OUT "Error: $@\n"), next CMD if $@; |
815 | $s = CvGV_name($s); |
816 | print($OUT "Interpreted as: $1 $s\n"); |
817 | $cmd = "$1 $s"; |
818 | }; |
819 | $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*(\[.*\])?)/s && do { |
f1583d8f |
820 | my $s = $subname = $1; |
d338d6fe |
821 | $subname =~ s/\'/::/; |
477ea2b1 |
822 | $subname = $package."::".$subname |
823 | unless $subname =~ /::/; |
f1583d8f |
824 | $subname = "CORE::GLOBAL::$s" |
825 | if not defined &$subname and $s !~ /::/ |
826 | and defined &{"CORE::GLOBAL::$s"}; |
d338d6fe |
827 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
83ee9e09 |
828 | @pieces = split(/:/,find_sub($subname) || $sub{$subname}); |
d338d6fe |
829 | $subrange = pop @pieces; |
830 | $file = join(':', @pieces); |
831 | if ($file ne $filename) { |
bee32ff8 |
832 | print $OUT "Switching to file '$file'.\n" |
055fd3a9 |
833 | unless $slave_editor; |
8ebc5c01 |
834 | *dbline = $main::{'_<' . $file}; |
d338d6fe |
835 | $max = $#dbline; |
836 | $filename = $file; |
837 | } |
838 | if ($subrange) { |
839 | if (eval($subrange) < -$window) { |
840 | $subrange =~ s/-.*/+/; |
841 | } |
842 | $cmd = "l $subrange"; |
843 | } else { |
844 | print $OUT "Subroutine $subname not found.\n"; |
845 | next CMD; |
846 | } }; |
54d04a52 |
847 | $cmd =~ /^\.$/ && do { |
1d06cb2d |
848 | $incr = -1; # for backward motion. |
54d04a52 |
849 | $start = $line; |
850 | $filename = $filename_ini; |
8ebc5c01 |
851 | *dbline = $main::{'_<' . $filename}; |
54d04a52 |
852 | $max = $#dbline; |
f1583d8f |
853 | print_lineinfo($position); |
54d04a52 |
854 | next CMD }; |
d338d6fe |
855 | $cmd =~ /^w\b\s*(\d*)$/ && do { |
856 | $incr = $window - 1; |
857 | $start = $1 if $1; |
858 | $start -= $preview; |
54d04a52 |
859 | #print $OUT 'l ' . $start . '-' . ($start + $incr); |
d338d6fe |
860 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
861 | $cmd =~ /^-$/ && do { |
1d06cb2d |
862 | $start -= $incr + $window + 1; |
863 | $start = 1 if $start <= 0; |
d338d6fe |
864 | $incr = $window - 1; |
1d06cb2d |
865 | $cmd = 'l ' . ($start) . '+'; }; |
d338d6fe |
866 | $cmd =~ /^l$/ && do { |
867 | $incr = $window - 1; |
868 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
869 | $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { |
870 | $start = $1 if $1; |
871 | $incr = $2; |
872 | $incr = $window - 1 unless $incr; |
873 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
54d04a52 |
874 | $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
875 | $end = (!defined $2) ? $max : ($4 ? $4 : $2); |
d338d6fe |
876 | $end = $max if $end > $max; |
877 | $i = $2; |
878 | $i = $line if $i eq '.'; |
879 | $i = 1 if $i < 1; |
1d06cb2d |
880 | $incr = $end - $i; |
055fd3a9 |
881 | if ($slave_editor) { |
d338d6fe |
882 | print $OUT "\032\032$filename:$i:0\n"; |
883 | $i = $end; |
884 | } else { |
885 | for (; $i <= $end; $i++) { |
04e43a21 |
886 | ($stop,$action) = split(/\0/, $dbline{$i}) if |
887 | $dbline{$i}; |
54d04a52 |
888 | $arrow = ($i==$line |
889 | and $filename eq $filename_ini) |
890 | ? '==>' |
36477c24 |
891 | : ($dbline[$i]+0 ? ':' : ' ') ; |
54d04a52 |
892 | $arrow .= 'b' if $stop; |
893 | $arrow .= 'a' if $action; |
894 | print $OUT "$i$arrow\t", $dbline[$i]; |
65c9c81d |
895 | $i++, last if $signal; |
d338d6fe |
896 | } |
65c9c81d |
897 | print $OUT "\n" unless $dbline[$i-1] =~ /\n$/; |
d338d6fe |
898 | } |
899 | $start = $i; # remember in case they want more |
900 | $start = $max if $start > $max; |
901 | next CMD; }; |
902 | $cmd =~ /^D$/ && do { |
55497cff |
903 | print $OUT "Deleting all breakpoints...\n"; |
904 | my $file; |
905 | for $file (keys %had_breakpoints) { |
8ebc5c01 |
906 | local *dbline = $main::{'_<' . $file}; |
55497cff |
907 | my $max = $#dbline; |
908 | my $was; |
909 | |
d338d6fe |
910 | for ($i = 1; $i <= $max ; $i++) { |
911 | if (defined $dbline{$i}) { |
912 | $dbline{$i} =~ s/^[^\0]+//; |
913 | if ($dbline{$i} =~ s/^\0?$//) { |
914 | delete $dbline{$i}; |
915 | } |
916 | } |
917 | } |
3fbd6552 |
918 | |
919 | if (not $had_breakpoints{$file} &= ~1) { |
920 | delete $had_breakpoints{$file}; |
921 | } |
55497cff |
922 | } |
923 | undef %postponed; |
924 | undef %postponed_file; |
925 | undef %break_on_load; |
55497cff |
926 | next CMD; }; |
d338d6fe |
927 | $cmd =~ /^L$/ && do { |
55497cff |
928 | my $file; |
929 | for $file (keys %had_breakpoints) { |
8ebc5c01 |
930 | local *dbline = $main::{'_<' . $file}; |
55497cff |
931 | my $max = $#dbline; |
932 | my $was; |
933 | |
d338d6fe |
934 | for ($i = 1; $i <= $max; $i++) { |
935 | if (defined $dbline{$i}) { |
2002527a |
936 | print $OUT "$file:\n" unless $was++; |
55497cff |
937 | print $OUT " $i:\t", $dbline[$i]; |
d338d6fe |
938 | ($stop,$action) = split(/\0/, $dbline{$i}); |
55497cff |
939 | print $OUT " break if (", $stop, ")\n" |
d338d6fe |
940 | if $stop; |
55497cff |
941 | print $OUT " action: ", $action, "\n" |
d338d6fe |
942 | if $action; |
943 | last if $signal; |
944 | } |
945 | } |
55497cff |
946 | } |
947 | if (%postponed) { |
948 | print $OUT "Postponed breakpoints in subroutines:\n"; |
949 | my $subname; |
950 | for $subname (keys %postponed) { |
951 | print $OUT " $subname\t$postponed{$subname}\n"; |
952 | last if $signal; |
953 | } |
954 | } |
955 | my @have = map { # Combined keys |
956 | keys %{$postponed_file{$_}} |
957 | } keys %postponed_file; |
958 | if (@have) { |
959 | print $OUT "Postponed breakpoints in files:\n"; |
960 | my ($file, $line); |
961 | for $file (keys %postponed_file) { |
0c395bd7 |
962 | my $db = $postponed_file{$file}; |
55497cff |
963 | print $OUT " $file:\n"; |
0c395bd7 |
964 | for $line (sort {$a <=> $b} keys %$db) { |
08a4aec0 |
965 | print $OUT " $line:\n"; |
0c395bd7 |
966 | my ($stop,$action) = split(/\0/, $$db{$line}); |
55497cff |
967 | print $OUT " break if (", $stop, ")\n" |
968 | if $stop; |
969 | print $OUT " action: ", $action, "\n" |
970 | if $action; |
971 | last if $signal; |
972 | } |
973 | last if $signal; |
974 | } |
975 | } |
976 | if (%break_on_load) { |
977 | print $OUT "Breakpoints on load:\n"; |
978 | my $file; |
979 | for $file (keys %break_on_load) { |
980 | print $OUT " $file\n"; |
981 | last if $signal; |
982 | } |
983 | } |
6027b9a3 |
984 | if ($trace & 2) { |
985 | print $OUT "Watch-expressions:\n"; |
986 | my $expr; |
987 | for $expr (@to_watch) { |
988 | print $OUT " $expr\n"; |
989 | last if $signal; |
990 | } |
991 | } |
55497cff |
992 | next CMD; }; |
993 | $cmd =~ /^b\b\s*load\b\s*(.*)/ && do { |
477ea2b1 |
994 | my $file = $1; $file =~ s/\s+$//; |
f1583d8f |
995 | cmd_b_load($file); |
55497cff |
996 | next CMD; }; |
1d06cb2d |
997 | $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
a223bd61 |
998 | my $cond = length $3 ? $3 : '1'; |
1d06cb2d |
999 | my ($subname, $break) = ($2, $1 eq 'postpone'); |
a223bd61 |
1000 | $subname =~ s/\'/::/g; |
55497cff |
1001 | $subname = "${'package'}::" . $subname |
1002 | unless $subname =~ /::/; |
1003 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
1d06cb2d |
1004 | $postponed{$subname} = $break |
1005 | ? "break +0 if $cond" : "compile"; |
d338d6fe |
1006 | next CMD; }; |
83ee9e09 |
1007 | $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/ && do { |
d338d6fe |
1008 | $subname = $1; |
a223bd61 |
1009 | $cond = length $2 ? $2 : '1'; |
f1583d8f |
1010 | cmd_b_sub($subname, $cond); |
d338d6fe |
1011 | next CMD; }; |
1012 | $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { |
3fbd6552 |
1013 | $i = $1 || $line; |
31706494 |
1014 | $cond = length $2 ? $2 : '1'; |
f1583d8f |
1015 | cmd_b_line($i, $cond); |
d338d6fe |
1016 | next CMD; }; |
3fbd6552 |
1017 | $cmd =~ /^d\b\s*(\d*)/ && do { |
f1583d8f |
1018 | cmd_d($1 || $line); |
d338d6fe |
1019 | next CMD; }; |
1020 | $cmd =~ /^A$/ && do { |
3fbd6552 |
1021 | print $OUT "Deleting all actions...\n"; |
55497cff |
1022 | my $file; |
1023 | for $file (keys %had_breakpoints) { |
8ebc5c01 |
1024 | local *dbline = $main::{'_<' . $file}; |
55497cff |
1025 | my $max = $#dbline; |
1026 | my $was; |
1027 | |
d338d6fe |
1028 | for ($i = 1; $i <= $max ; $i++) { |
1029 | if (defined $dbline{$i}) { |
1030 | $dbline{$i} =~ s/\0[^\0]*//; |
1031 | delete $dbline{$i} if $dbline{$i} eq ''; |
1032 | } |
1033 | } |
3fbd6552 |
1034 | |
055fd3a9 |
1035 | unless ($had_breakpoints{$file} &= ~2) { |
3fbd6552 |
1036 | delete $had_breakpoints{$file}; |
1037 | } |
55497cff |
1038 | } |
1039 | next CMD; }; |
d338d6fe |
1040 | $cmd =~ /^O\s*$/ && do { |
1041 | for (@options) { |
1042 | &dump_option($_); |
1043 | } |
1044 | next CMD; }; |
1045 | $cmd =~ /^O\s*(\S.*)/ && do { |
1046 | parse_options($1); |
1047 | next CMD; }; |
55497cff |
1048 | $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE |
1049 | push @$pre, action($1); |
1050 | next CMD; }; |
1051 | $cmd =~ /^>>\s*(.*)/ && do { |
1052 | push @$post, action($1); |
1053 | next CMD; }; |
d338d6fe |
1054 | $cmd =~ /^<\s*(.*)/ && do { |
055fd3a9 |
1055 | unless ($1) { |
e4e99f0d |
1056 | print $OUT "All < actions cleared.\n"; |
055fd3a9 |
1057 | $pre = []; |
1058 | next CMD; |
1059 | } |
1060 | if ($1 eq '?') { |
1061 | unless (@$pre) { |
e4e99f0d |
1062 | print $OUT "No pre-prompt Perl actions.\n"; |
055fd3a9 |
1063 | next CMD; |
1064 | } |
e4e99f0d |
1065 | print $OUT "Perl commands run before each prompt:\n"; |
055fd3a9 |
1066 | for my $action ( @$pre ) { |
e4e99f0d |
1067 | print $OUT "\t< -- $action\n"; |
055fd3a9 |
1068 | } |
1069 | next CMD; |
1070 | } |
55497cff |
1071 | $pre = [action($1)]; |
d338d6fe |
1072 | next CMD; }; |
1073 | $cmd =~ /^>\s*(.*)/ && do { |
055fd3a9 |
1074 | unless ($1) { |
e4e99f0d |
1075 | print $OUT "All > actions cleared.\n"; |
055fd3a9 |
1076 | $post = []; |
1077 | next CMD; |
1078 | } |
1079 | if ($1 eq '?') { |
1080 | unless (@$post) { |
e4e99f0d |
1081 | print $OUT "No post-prompt Perl actions.\n"; |
055fd3a9 |
1082 | next CMD; |
1083 | } |
e4e99f0d |
1084 | print $OUT "Perl commands run after each prompt:\n"; |
055fd3a9 |
1085 | for my $action ( @$post ) { |
e4e99f0d |
1086 | print $OUT "\t> -- $action\n"; |
055fd3a9 |
1087 | } |
1088 | next CMD; |
1089 | } |
55497cff |
1090 | $post = [action($1)]; |
1091 | next CMD; }; |
1092 | $cmd =~ /^\{\{\s*(.*)/ && do { |
055fd3a9 |
1093 | if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,2))) { |
e4e99f0d |
1094 | print $OUT "{{ is now a debugger command\n", |
055fd3a9 |
1095 | "use `;{{' if you mean Perl code\n"; |
1096 | $cmd = "h {{"; |
1097 | redo CMD; |
1098 | } |
55497cff |
1099 | push @$pretype, $1; |
1100 | next CMD; }; |
1101 | $cmd =~ /^\{\s*(.*)/ && do { |
055fd3a9 |
1102 | unless ($1) { |
e4e99f0d |
1103 | print $OUT "All { actions cleared.\n"; |
055fd3a9 |
1104 | $pretype = []; |
1105 | next CMD; |
1106 | } |
1107 | if ($1 eq '?') { |
1108 | unless (@$pretype) { |
e4e99f0d |
1109 | print $OUT "No pre-prompt debugger actions.\n"; |
055fd3a9 |
1110 | next CMD; |
1111 | } |
e4e99f0d |
1112 | print $OUT "Debugger commands run before each prompt:\n"; |
055fd3a9 |
1113 | for my $action ( @$pretype ) { |
e4e99f0d |
1114 | print $OUT "\t{ -- $action\n"; |
055fd3a9 |
1115 | } |
1116 | next CMD; |
1117 | } |
1118 | if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,1))) { |
e4e99f0d |
1119 | print $OUT "{ is now a debugger command\n", |
055fd3a9 |
1120 | "use `;{' if you mean Perl code\n"; |
1121 | $cmd = "h {"; |
1122 | redo CMD; |
1123 | } |
55497cff |
1124 | $pretype = [$1]; |
d338d6fe |
1125 | next CMD; }; |
3fbd6552 |
1126 | $cmd =~ /^a\b\s*(\d*)\s*(.*)/ && do { |
1127 | $i = $1 || $line; $j = $2; |
1128 | if (length $j) { |
1129 | if ($dbline[$i] == 0) { |
1130 | print $OUT "Line $i may not have an action.\n"; |
1131 | } else { |
1132 | $had_breakpoints{$filename} |= 2; |
1133 | $dbline{$i} =~ s/\0[^\0]*//; |
1134 | $dbline{$i} .= "\0" . action($j); |
1135 | } |
d338d6fe |
1136 | } else { |
1137 | $dbline{$i} =~ s/\0[^\0]*//; |
3fbd6552 |
1138 | delete $dbline{$i} if $dbline{$i} eq ''; |
d338d6fe |
1139 | } |
1140 | next CMD; }; |
1141 | $cmd =~ /^n$/ && do { |
4639966b |
1142 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
1143 | $single = 2; |
1144 | $laststep = $cmd; |
1145 | last CMD; }; |
1146 | $cmd =~ /^s$/ && do { |
4639966b |
1147 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
1148 | $single = 1; |
1149 | $laststep = $cmd; |
1150 | last CMD; }; |
54d04a52 |
1151 | $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { |
4639966b |
1152 | end_report(), next CMD if $finished and $level <= 1; |
fb73857a |
1153 | $subname = $i = $1; |
bee32ff8 |
1154 | # Probably not needed, since we finish an interactive |
1155 | # sub-session anyway... |
1156 | # local $filename = $filename; |
1157 | # local *dbline = *dbline; # XXX Would this work?! |
54d04a52 |
1158 | if ($i =~ /\D/) { # subroutine name |
fb73857a |
1159 | $subname = $package."::".$subname |
1160 | unless $subname =~ /::/; |
1161 | ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/); |
54d04a52 |
1162 | $i += 0; |
1163 | if ($i) { |
1164 | $filename = $file; |
8ebc5c01 |
1165 | *dbline = $main::{'_<' . $filename}; |
3fbd6552 |
1166 | $had_breakpoints{$filename} |= 1; |
54d04a52 |
1167 | $max = $#dbline; |
1168 | ++$i while $dbline[$i] == 0 && $i < $max; |
1169 | } else { |
1170 | print $OUT "Subroutine $subname not found.\n"; |
1171 | next CMD; |
1172 | } |
1173 | } |
d338d6fe |
1174 | if ($i) { |
1175 | if ($dbline[$i] == 0) { |
1176 | print $OUT "Line $i not breakable.\n"; |
1177 | next CMD; |
1178 | } |
1179 | $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. |
1180 | } |
f8b5b99c |
1181 | for ($i=0; $i <= $stack_depth; ) { |
d338d6fe |
1182 | $stack[$i++] &= ~1; |
1183 | } |
1184 | last CMD; }; |
1185 | $cmd =~ /^r$/ && do { |
4639966b |
1186 | end_report(), next CMD if $finished and $level <= 1; |
f8b5b99c |
1187 | $stack[$stack_depth] |= 1; |
1188 | $doret = $option{PrintRet} ? $stack_depth - 1 : -2; |
d338d6fe |
1189 | last CMD; }; |
54d04a52 |
1190 | $cmd =~ /^R$/ && do { |
55497cff |
1191 | print $OUT "Warning: some settings and command-line options may be lost!\n"; |
54d04a52 |
1192 | my (@script, @flags, $cl); |
1193 | push @flags, '-w' if $ini_warn; |
1194 | # Put all the old includes at the start to get |
1195 | # the same debugger. |
1196 | for (@ini_INC) { |
1197 | push @flags, '-I', $_; |
1198 | } |
1199 | # Arrange for setting the old INC: |
1200 | set_list("PERLDB_INC", @ini_INC); |
1201 | if ($0 eq '-e') { |
1202 | for (1..$#{'::_<-e'}) { # The first line is PERL5DB |
055fd3a9 |
1203 | chomp ($cl = ${'::_<-e'}[$_]); |
54d04a52 |
1204 | push @script, '-e', $cl; |
1205 | } |
1206 | } else { |
1207 | @script = $0; |
1208 | } |
1209 | set_list("PERLDB_HIST", |
1210 | $term->Features->{getHistory} |
1211 | ? $term->GetHistory : @hist); |
55497cff |
1212 | my @had_breakpoints = keys %had_breakpoints; |
1213 | set_list("PERLDB_VISITED", @had_breakpoints); |
54d04a52 |
1214 | set_list("PERLDB_OPT", %option); |
55497cff |
1215 | set_list("PERLDB_ON_LOAD", %break_on_load); |
1216 | my @hard; |
1217 | for (0 .. $#had_breakpoints) { |
1218 | my $file = $had_breakpoints[$_]; |
8ebc5c01 |
1219 | *dbline = $main::{'_<' . $file}; |
0c395bd7 |
1220 | next unless %dbline or $postponed_file{$file}; |
55497cff |
1221 | (push @hard, $file), next |
1222 | if $file =~ /^\(eval \d+\)$/; |
1223 | my @add; |
1224 | @add = %{$postponed_file{$file}} |
0c395bd7 |
1225 | if $postponed_file{$file}; |
55497cff |
1226 | set_list("PERLDB_FILE_$_", %dbline, @add); |
1227 | } |
1228 | for (@hard) { # Yes, really-really... |
1229 | # Find the subroutines in this eval |
8ebc5c01 |
1230 | *dbline = $main::{'_<' . $_}; |
55497cff |
1231 | my ($quoted, $sub, %subs, $line) = quotemeta $_; |
1232 | for $sub (keys %sub) { |
1233 | next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/; |
1234 | $subs{$sub} = [$1, $2]; |
1235 | } |
1236 | unless (%subs) { |
1237 | print $OUT |
1238 | "No subroutines in $_, ignoring breakpoints.\n"; |
1239 | next; |
1240 | } |
1241 | LINES: for $line (keys %dbline) { |
1242 | # One breakpoint per sub only: |
1243 | my ($offset, $sub, $found); |
1244 | SUBS: for $sub (keys %subs) { |
1245 | if ($subs{$sub}->[1] >= $line # Not after the subroutine |
1246 | and (not defined $offset # Not caught |
1247 | or $offset < 0 )) { # or badly caught |
1248 | $found = $sub; |
1249 | $offset = $line - $subs{$sub}->[0]; |
1250 | $offset = "+$offset", last SUBS if $offset >= 0; |
1251 | } |
1252 | } |
1253 | if (defined $offset) { |
1254 | $postponed{$found} = |
1255 | "break $offset if $dbline{$line}"; |
1256 | } else { |
1257 | print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n"; |
1258 | } |
1259 | } |
54d04a52 |
1260 | } |
55497cff |
1261 | set_list("PERLDB_POSTPONE", %postponed); |
43aed9ee |
1262 | set_list("PERLDB_PRETYPE", @$pretype); |
1263 | set_list("PERLDB_PRE", @$pre); |
1264 | set_list("PERLDB_POST", @$post); |
1265 | set_list("PERLDB_TYPEAHEAD", @typeahead); |
54d04a52 |
1266 | $ENV{PERLDB_RESTART} = 1; |
f1583d8f |
1267 | delete $ENV{PERLDB_PIDS}; # Restore ini state |
1268 | $ENV{PERLDB_PIDS} = $ini_pids if defined $ini_pids; |
055fd3a9 |
1269 | #print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS"; |
04e43a21 |
1270 | exec($^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS) || |
54d04a52 |
1271 | print $OUT "exec failed: $!\n"; |
1272 | last CMD; }; |
d338d6fe |
1273 | $cmd =~ /^T$/ && do { |
36477c24 |
1274 | print_trace($OUT, 1); # skip DB |
d338d6fe |
1275 | next CMD; }; |
6027b9a3 |
1276 | $cmd =~ /^W\s*$/ && do { |
1277 | $trace &= ~2; |
1278 | @to_watch = @old_watch = (); |
1279 | next CMD; }; |
1280 | $cmd =~ /^W\b\s*(.*)/s && do { |
1281 | push @to_watch, $1; |
1282 | $evalarg = $1; |
1283 | my ($val) = &eval; |
1284 | $val = (defined $val) ? "'$val'" : 'undef' ; |
1285 | push @old_watch, $val; |
1286 | $trace |= 2; |
1287 | next CMD; }; |
d338d6fe |
1288 | $cmd =~ /^\/(.*)$/ && do { |
1289 | $inpat = $1; |
1290 | $inpat =~ s:([^\\])/$:$1:; |
1291 | if ($inpat ne "") { |
3dcd9d33 |
1292 | # squelch the sigmangler |
1293 | local $SIG{__DIE__}; |
1294 | local $SIG{__WARN__}; |
d338d6fe |
1295 | eval '$inpat =~ m'."\a$inpat\a"; |
1296 | if ($@ ne "") { |
1297 | print $OUT "$@"; |
1298 | next CMD; |
1299 | } |
1300 | $pat = $inpat; |
1301 | } |
1302 | $end = $start; |
1d06cb2d |
1303 | $incr = -1; |
d338d6fe |
1304 | eval ' |
1305 | for (;;) { |
1306 | ++$start; |
1307 | $start = 1 if ($start > $max); |
1308 | last if ($start == $end); |
1309 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
055fd3a9 |
1310 | if ($slave_editor) { |
d338d6fe |
1311 | print $OUT "\032\032$filename:$start:0\n"; |
1312 | } else { |
1313 | print $OUT "$start:\t", $dbline[$start], "\n"; |
1314 | } |
1315 | last; |
1316 | } |
1317 | } '; |
1318 | print $OUT "/$pat/: not found\n" if ($start == $end); |
1319 | next CMD; }; |
1320 | $cmd =~ /^\?(.*)$/ && do { |
1321 | $inpat = $1; |
1322 | $inpat =~ s:([^\\])\?$:$1:; |
1323 | if ($inpat ne "") { |
3dcd9d33 |
1324 | # squelch the sigmangler |
1325 | local $SIG{__DIE__}; |
1326 | local $SIG{__WARN__}; |
d338d6fe |
1327 | eval '$inpat =~ m'."\a$inpat\a"; |
1328 | if ($@ ne "") { |
3dcd9d33 |
1329 | print $OUT $@; |
d338d6fe |
1330 | next CMD; |
1331 | } |
1332 | $pat = $inpat; |
1333 | } |
1334 | $end = $start; |
1d06cb2d |
1335 | $incr = -1; |
d338d6fe |
1336 | eval ' |
1337 | for (;;) { |
1338 | --$start; |
1339 | $start = $max if ($start <= 0); |
1340 | last if ($start == $end); |
1341 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
055fd3a9 |
1342 | if ($slave_editor) { |
d338d6fe |
1343 | print $OUT "\032\032$filename:$start:0\n"; |
1344 | } else { |
1345 | print $OUT "$start:\t", $dbline[$start], "\n"; |
1346 | } |
1347 | last; |
1348 | } |
1349 | } '; |
1350 | print $OUT "?$pat?: not found\n" if ($start == $end); |
1351 | next CMD; }; |
1352 | $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { |
1353 | pop(@hist) if length($cmd) > 1; |
3fbd6552 |
1354 | $i = $1 ? ($#hist-($2||1)) : ($2||$#hist); |
6921e3ed |
1355 | $cmd = $hist[$i]; |
615b993b |
1356 | print $OUT $cmd, "\n"; |
d338d6fe |
1357 | redo CMD; }; |
55497cff |
1358 | $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do { |
ee971a18 |
1359 | &system($1); |
d338d6fe |
1360 | next CMD; }; |
1361 | $cmd =~ /^$rc([^$rc].*)$/ && do { |
1362 | $pat = "^$1"; |
1363 | pop(@hist) if length($cmd) > 1; |
1364 | for ($i = $#hist; $i; --$i) { |
1365 | last if $hist[$i] =~ /$pat/; |
1366 | } |
1367 | if (!$i) { |
1368 | print $OUT "No such command!\n\n"; |
1369 | next CMD; |
1370 | } |
6921e3ed |
1371 | $cmd = $hist[$i]; |
615b993b |
1372 | print $OUT $cmd, "\n"; |
d338d6fe |
1373 | redo CMD; }; |
1374 | $cmd =~ /^$sh$/ && do { |
1375 | &system($ENV{SHELL}||"/bin/sh"); |
1376 | next CMD; }; |
ee971a18 |
1377 | $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do { |
055fd3a9 |
1378 | # XXX: using csh or tcsh destroys sigint retvals! |
1379 | #&system($1); # use this instead |
ee971a18 |
1380 | &system($ENV{SHELL}||"/bin/sh","-c",$1); |
d338d6fe |
1381 | next CMD; }; |
1382 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { |
055fd3a9 |
1383 | $end = $2 ? ($#hist-$2) : 0; |
d338d6fe |
1384 | $hist = 0 if $hist < 0; |
1385 | for ($i=$#hist; $i>$end; $i--) { |
1386 | print $OUT "$i: ",$hist[$i],"\n" |
1387 | unless $hist[$i] =~ /^.?$/; |
1388 | }; |
1389 | next CMD; }; |
055fd3a9 |
1390 | $cmd =~ /^(?:man|(?:perl)?doc)\b(?:\s+([^(]*))?$/ && do { |
1391 | runman($1); |
1392 | next CMD; }; |
b9b857e2 |
1393 | $cmd =~ s/^p$/print {\$DB::OUT} \$_/; |
1394 | $cmd =~ s/^p\b/print {\$DB::OUT} /; |
3dcd9d33 |
1395 | $cmd =~ s/^=\s*// && do { |
1396 | my @keys; |
1397 | if (length $cmd == 0) { |
1398 | @keys = sort keys %alias; |
1399 | } |
1400 | elsif (my($k,$v) = ($cmd =~ /^(\S+)\s+(\S.*)/)) { |
1401 | # can't use $_ or kill //g state |
1402 | for my $x ($k, $v) { $x =~ s/\a/\\a/g } |
1403 | $alias{$k} = "s\a$k\a$v\a"; |
1404 | # squelch the sigmangler |
1405 | local $SIG{__DIE__}; |
1406 | local $SIG{__WARN__}; |
1407 | unless (eval "sub { s\a$k\a$v\a }; 1") { |
1408 | print $OUT "Can't alias $k to $v: $@\n"; |
1409 | delete $alias{$k}; |
1410 | next CMD; |
1411 | } |
1412 | @keys = ($k); |
1413 | } |
1414 | else { |
1415 | @keys = ($cmd); |
1416 | } |
1417 | for my $k (@keys) { |
1418 | if ((my $v = $alias{$k}) =~ s\as\a$k\a(.*)\a$\a1\a) { |
1419 | print $OUT "$k\t= $1\n"; |
1420 | } |
1421 | elsif (defined $alias{$k}) { |
d338d6fe |
1422 | print $OUT "$k\t$alias{$k}\n"; |
3dcd9d33 |
1423 | } |
1424 | else { |
1425 | print "No alias for $k\n"; |
1426 | } |
1427 | } |
d338d6fe |
1428 | next CMD; }; |
1429 | $cmd =~ /^\|\|?\s*[^|]/ && do { |
1430 | if ($pager =~ /^\|/) { |
1431 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
1432 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
1433 | } else { |
1434 | open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); |
1435 | } |
055fd3a9 |
1436 | fix_less(); |
d338d6fe |
1437 | unless ($piped=open(OUT,$pager)) { |
1438 | &warn("Can't pipe output to `$pager'"); |
1439 | if ($pager =~ /^\|/) { |
055fd3a9 |
1440 | open(OUT,">&STDOUT") # XXX: lost message |
1441 | || &warn("Can't restore DB::OUT"); |
d338d6fe |
1442 | open(STDOUT,">&SAVEOUT") |
1443 | || &warn("Can't restore STDOUT"); |
1444 | close(SAVEOUT); |
1445 | } else { |
055fd3a9 |
1446 | open(OUT,">&STDOUT") # XXX: lost message |
1447 | || &warn("Can't restore DB::OUT"); |
d338d6fe |
1448 | } |
1449 | next CMD; |
1450 | } |
77fb7b16 |
1451 | $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/ |
055fd3a9 |
1452 | && ("" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}); |
d338d6fe |
1453 | $selected= select(OUT); |
1454 | $|= 1; |
1455 | select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; |
1456 | $cmd =~ s/^\|+\s*//; |
055fd3a9 |
1457 | redo PIPE; |
1458 | }; |
d338d6fe |
1459 | # XXX Local variants do not work! |
6027b9a3 |
1460 | $cmd =~ s/^t\s/\$DB::trace |= 1;\n/; |
d338d6fe |
1461 | $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; |
1462 | $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; |
1463 | } # PIPE: |
d338d6fe |
1464 | $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; |
1465 | if ($onetimeDump) { |
1466 | $onetimeDump = undef; |
f36776d9 |
1467 | } elsif ($term_pid == $$) { |
d338d6fe |
1468 | print $OUT "\n"; |
1469 | } |
1470 | } continue { # CMD: |
1471 | if ($piped) { |
1472 | if ($pager =~ /^\|/) { |
055fd3a9 |
1473 | $? = 0; |
1474 | # we cannot warn here: the handle is missing --tchrist |
1475 | close(OUT) || print SAVEOUT "\nCan't close DB::OUT\n"; |
1476 | |
1477 | # most of the $? crud was coping with broken cshisms |
1478 | if ($?) { |
1479 | print SAVEOUT "Pager `$pager' failed: "; |
1480 | if ($? == -1) { |
1481 | print SAVEOUT "shell returned -1\n"; |
1482 | } elsif ($? >> 8) { |
1483 | print SAVEOUT |
1484 | ( $? & 127 ) ? " (SIG#".($?&127).")" : "", |
1485 | ( $? & 128 ) ? " -- core dumped" : "", "\n"; |
1486 | } else { |
1487 | print SAVEOUT "status ", ($? >> 8), "\n"; |
1488 | } |
1489 | } |
1490 | |
d338d6fe |
1491 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
1492 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
055fd3a9 |
1493 | $SIG{PIPE} = "DEFAULT" if $SIG{PIPE} eq \&DB::catch; |
d338d6fe |
1494 | # Will stop ignoring SIGPIPE if done like nohup(1) |
1495 | # does SIGINT but Perl doesn't give us a choice. |
1496 | } else { |
1497 | open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); |
1498 | } |
1499 | close(SAVEOUT); |
1500 | select($selected), $selected= "" unless $selected eq ""; |
1501 | $piped= ""; |
1502 | } |
1503 | } # CMD: |
20928eff |
1504 | $fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF |
e63173ce |
1505 | foreach $evalarg (@$post) { |
1506 | &eval; |
1507 | } |
d338d6fe |
1508 | } # if ($single || $signal) |
22fae026 |
1509 | ($@, $!, $^E, $,, $/, $\, $^W) = @saved; |
d338d6fe |
1510 | (); |
1511 | } |
1512 | |
1513 | # The following code may be executed now: |
1514 | # BEGIN {warn 4} |
1515 | |
1516 | sub sub { |
ee971a18 |
1517 | my ($al, $ret, @ret) = ""; |
7d4a81e5 |
1518 | if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') { |
1519 | $al = " for $$sub"; |
ee971a18 |
1520 | } |
f8b5b99c |
1521 | local $stack_depth = $stack_depth + 1; # Protect from non-local exits |
1522 | $#stack = $stack_depth; |
1523 | $stack[-1] = $single; |
d338d6fe |
1524 | $single &= 1; |
f8b5b99c |
1525 | $single |= 4 if $stack_depth == $deep; |
04fb8f4b |
1526 | ($frame & 4 |
f1583d8f |
1527 | ? ( print_lineinfo(' ' x ($stack_depth - 1), "in "), |
04fb8f4b |
1528 | # Why -1? But it works! :-( |
1529 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
f1583d8f |
1530 | : print_lineinfo(' ' x ($stack_depth - 1), "entering $sub$al\n")) if $frame; |
d338d6fe |
1531 | if (wantarray) { |
1532 | @ret = &$sub; |
f8b5b99c |
1533 | $single |= $stack[$stack_depth--]; |
36477c24 |
1534 | ($frame & 4 |
f1583d8f |
1535 | ? ( print_lineinfo(' ' x $stack_depth, "out "), |
36477c24 |
1536 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
f1583d8f |
1537 | : print_lineinfo(' ' x $stack_depth, "exited $sub$al\n")) if $frame & 2; |
f8b5b99c |
1538 | if ($doret eq $stack_depth or $frame & 16) { |
1539 | my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); |
1540 | print $fh ' ' x $stack_depth if $frame & 16; |
7ea36084 |
1541 | print $fh "list context return from $sub:\n"; |
1542 | dumpit($fh, \@ret ); |
1543 | $doret = -2; |
1544 | } |
d338d6fe |
1545 | @ret; |
1546 | } else { |
fb73857a |
1547 | if (defined wantarray) { |
1548 | $ret = &$sub; |
1549 | } else { |
1550 | &$sub; undef $ret; |
1551 | }; |
f8b5b99c |
1552 | $single |= $stack[$stack_depth--]; |
36477c24 |
1553 | ($frame & 4 |
f1583d8f |
1554 | ? ( print_lineinfo(' ' x $stack_depth, "out "), |
36477c24 |
1555 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
f1583d8f |
1556 | : print_lineinfo(' ' x $stack_depth, "exited $sub$al\n")) if $frame & 2; |
f8b5b99c |
1557 | if ($doret eq $stack_depth or $frame & 16 and defined wantarray) { |
1558 | my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); |
1559 | print $fh (' ' x $stack_depth) if $frame & 16; |
7ea36084 |
1560 | print $fh (defined wantarray |
1561 | ? "scalar context return from $sub: " |
1562 | : "void context return from $sub\n"); |
1563 | dumpit( $fh, $ret ) if defined wantarray; |
1564 | $doret = -2; |
1565 | } |
d338d6fe |
1566 | $ret; |
1567 | } |
1568 | } |
1569 | |
f1583d8f |
1570 | ### The API section |
1571 | |
1572 | ### Functions with multiple modes of failure die on error, the rest |
1573 | ### returns FALSE on error. |
1574 | ### User-interface functions cmd_* output error message. |
1575 | |
1576 | sub break_on_load { |
1577 | my $file = shift; |
1578 | $break_on_load{$file} = 1; |
1579 | $had_breakpoints{$file} |= 1; |
1580 | } |
1581 | |
1582 | sub report_break_on_load { |
1583 | sort keys %break_on_load; |
1584 | } |
1585 | |
1586 | sub cmd_b_load { |
1587 | my $file = shift; |
1588 | my @files; |
1589 | { |
1590 | push @files, $file; |
1591 | push @files, $::INC{$file} if $::INC{$file}; |
1592 | $file .= '.pm', redo unless $file =~ /\./; |
1593 | } |
1594 | break_on_load($_) for @files; |
04e43a21 |
1595 | @files = report_break_on_load; |
f1583d8f |
1596 | print $OUT "Will stop on load of `@files'.\n"; |
1597 | } |
1598 | |
1599 | $filename_error = ''; |
1600 | |
1601 | sub breakable_line { |
1602 | my ($from, $to) = @_; |
1603 | my $i = $from; |
1604 | if (@_ >= 2) { |
1605 | my $delta = $from < $to ? +1 : -1; |
1606 | my $limit = $delta > 0 ? $#dbline : 1; |
1607 | $limit = $to if ($limit - $to) * $delta > 0; |
1608 | $i += $delta while $dbline[$i] == 0 and ($limit - $i) * $delta > 0; |
1609 | } |
1610 | return $i unless $dbline[$i] == 0; |
1611 | my ($pl, $upto) = ('', ''); |
1612 | ($pl, $upto) = ('s', "..$to") if @_ >=2 and $from != $to; |
1613 | die "Line$pl $from$upto$filename_error not breakable\n"; |
1614 | } |
1615 | |
1616 | sub breakable_line_in_filename { |
1617 | my ($f) = shift; |
1618 | local *dbline = $main::{'_<' . $f}; |
1619 | local $filename_error = " of `$f'"; |
1620 | breakable_line(@_); |
1621 | } |
1622 | |
1623 | sub break_on_line { |
1624 | my ($i, $cond) = @_; |
1625 | $cond = 1 unless @_ >= 2; |
1626 | my $inii = $i; |
1627 | my $after = ''; |
1628 | my $pl = ''; |
1629 | die "Line $i$filename_error not breakable.\n" if $dbline[$i] == 0; |
1630 | $had_breakpoints{$filename} |= 1; |
22c4a518 |
1631 | if ($dbline{$i}) { $dbline{$i} =~ s/^[^\0]*/$cond/; } |
1632 | else { $dbline{$i} = $cond; } |
f1583d8f |
1633 | } |
1634 | |
1635 | sub cmd_b_line { |
1636 | eval { break_on_line(@_); 1 } or print $OUT $@ and return; |
1637 | } |
1638 | |
1639 | sub break_on_filename_line { |
1640 | my ($f, $i, $cond) = @_; |
1641 | $cond = 1 unless @_ >= 3; |
1642 | local *dbline = $main::{'_<' . $f}; |
1643 | local $filename_error = " of `$f'"; |
1644 | local $filename = $f; |
1645 | break_on_line($i, $cond); |
1646 | } |
1647 | |
1648 | sub break_on_filename_line_range { |
1649 | my ($f, $from, $to, $cond) = @_; |
1650 | my $i = breakable_line_in_filename($f, $from, $to); |
1651 | $cond = 1 unless @_ >= 3; |
1652 | break_on_filename_line($f,$i,$cond); |
1653 | } |
1654 | |
1655 | sub subroutine_filename_lines { |
1656 | my ($subname,$cond) = @_; |
1657 | # Filename below can contain ':' |
1658 | find_sub($subname) =~ /^(.*):(\d+)-(\d+)$/; |
1659 | } |
1660 | |
1661 | sub break_subroutine { |
1662 | my $subname = shift; |
1663 | my ($file,$s,$e) = subroutine_filename_lines($subname) or |
1664 | die "Subroutine $subname not found.\n"; |
1665 | $cond = 1 unless @_ >= 2; |
1666 | break_on_filename_line_range($file,$s,$e,@_); |
1667 | } |
1668 | |
1669 | sub cmd_b_sub { |
1670 | my ($subname,$cond) = @_; |
1671 | $cond = 1 unless @_ >= 2; |
1672 | unless (ref $subname eq 'CODE') { |
1673 | $subname =~ s/\'/::/g; |
1674 | my $s = $subname; |
1675 | $subname = "${'package'}::" . $subname |
1676 | unless $subname =~ /::/; |
1677 | $subname = "CORE::GLOBAL::$s" |
1678 | if not defined &$subname and $s !~ /::/ and defined &{"CORE::GLOBAL::$s"}; |
1679 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
1680 | } |
1681 | eval { break_subroutine($subname,$cond); 1 } or print $OUT $@ and return; |
1682 | } |
1683 | |
1684 | sub cmd_stop { # As on ^C, but not signal-safy. |
1685 | $signal = 1; |
1686 | } |
1687 | |
1688 | sub delete_breakpoint { |
1689 | my $i = shift; |
1690 | die "Line $i not breakable.\n" if $dbline[$i] == 0; |
1691 | $dbline{$i} =~ s/^[^\0]*//; |
1692 | delete $dbline{$i} if $dbline{$i} eq ''; |
1693 | } |
1694 | |
1695 | sub cmd_d { |
1696 | my $i = shift; |
1697 | eval { delete_breakpoint $i; 1 } or print $OUT $@ and return; |
1698 | } |
1699 | |
1700 | ### END of the API section |
1701 | |
d338d6fe |
1702 | sub save { |
22fae026 |
1703 | @saved = ($@, $!, $^E, $,, $/, $\, $^W); |
d338d6fe |
1704 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; |
1705 | } |
1706 | |
f1583d8f |
1707 | sub print_lineinfo { |
1708 | resetterm(1) if $LINEINFO eq $OUT and $term_pid != $$; |
1709 | print $LINEINFO @_; |
1710 | } |
1711 | |
d338d6fe |
1712 | # The following takes its argument via $evalarg to preserve current @_ |
1713 | |
1714 | sub eval { |
055fd3a9 |
1715 | # 'my' would make it visible from user code |
f1583d8f |
1716 | # but so does local! --tchrist [... into @DB::res, not @res. IZ] |
1717 | local @res; |
d338d6fe |
1718 | { |
23a291ec |
1719 | local $otrace = $trace; |
1720 | local $osingle = $single; |
1721 | local $od = $^D; |
157b066d |
1722 | { ($evalarg) = $evalarg =~ /(.*)/s; } |
d338d6fe |
1723 | @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug |
1724 | $trace = $otrace; |
1725 | $single = $osingle; |
1726 | $^D = $od; |
1727 | } |
1728 | my $at = $@; |
36477c24 |
1729 | local $saved[0]; # Preserve the old value of $@ |
22fae026 |
1730 | eval { &DB::save }; |
62769f13 |
1731 | if ($at) { |
d338d6fe |
1732 | print $OUT $at; |
600d99fa |
1733 | } elsif ($onetimeDump) { |
1734 | dumpit($OUT, \@res) if $onetimeDump eq 'dump'; |
1735 | methods($res[0]) if $onetimeDump eq 'methods'; |
d338d6fe |
1736 | } |
6027b9a3 |
1737 | @res; |
d338d6fe |
1738 | } |
1739 | |
55497cff |
1740 | sub postponed_sub { |
1741 | my $subname = shift; |
1d06cb2d |
1742 | if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) { |
55497cff |
1743 | my $offset = $1 || 0; |
1744 | # Filename below can contain ':' |
1d06cb2d |
1745 | my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/); |
55497cff |
1746 | if ($i) { |
fb73857a |
1747 | $i += $offset; |
8ebc5c01 |
1748 | local *dbline = $main::{'_<' . $file}; |
55497cff |
1749 | local $^W = 0; # != 0 is magical below |
3fbd6552 |
1750 | $had_breakpoints{$file} |= 1; |
55497cff |
1751 | my $max = $#dbline; |
1752 | ++$i until $dbline[$i] != 0 or $i >= $max; |
1753 | $dbline{$i} = delete $postponed{$subname}; |
1754 | } else { |
1755 | print $OUT "Subroutine $subname not found.\n"; |
1756 | } |
1757 | return; |
1758 | } |
1d06cb2d |
1759 | elsif ($postponed{$subname} eq 'compile') { $signal = 1 } |
36477c24 |
1760 | #print $OUT "In postponed_sub for `$subname'.\n"; |
55497cff |
1761 | } |
1762 | |
1763 | sub postponed { |
3aefca04 |
1764 | if ($ImmediateStop) { |
1765 | $ImmediateStop = 0; |
1766 | $signal = 1; |
1767 | } |
55497cff |
1768 | return &postponed_sub |
1769 | unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled. |
1770 | # Cannot be done before the file is compiled |
1771 | local *dbline = shift; |
1772 | my $filename = $dbline; |
1773 | $filename =~ s/^_<//; |
36477c24 |
1774 | $signal = 1, print $OUT "'$filename' loaded...\n" |
1775 | if $break_on_load{$filename}; |
f1583d8f |
1776 | print_lineinfo(' ' x $stack_depth, "Package $filename.\n") if $frame; |
0c395bd7 |
1777 | return unless $postponed_file{$filename}; |
3fbd6552 |
1778 | $had_breakpoints{$filename} |= 1; |
55497cff |
1779 | #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic |
1780 | my $key; |
1781 | for $key (keys %{$postponed_file{$filename}}) { |
055fd3a9 |
1782 | $dbline{$key} = ${$postponed_file{$filename}}{$key}; |
54d04a52 |
1783 | } |
0c395bd7 |
1784 | delete $postponed_file{$filename}; |
54d04a52 |
1785 | } |
1786 | |
d338d6fe |
1787 | sub dumpit { |
7ea36084 |
1788 | local ($savout) = select(shift); |
ee971a18 |
1789 | my $osingle = $single; |
1790 | my $otrace = $trace; |
1791 | $single = $trace = 0; |
1792 | local $frame = 0; |
1793 | local $doret = -2; |
1794 | unless (defined &main::dumpValue) { |
1795 | do 'dumpvar.pl'; |
1796 | } |
d338d6fe |
1797 | if (defined &main::dumpValue) { |
1798 | &main::dumpValue(shift); |
1799 | } else { |
1800 | print $OUT "dumpvar.pl not available.\n"; |
1801 | } |
ee971a18 |
1802 | $single = $osingle; |
1803 | $trace = $otrace; |
d338d6fe |
1804 | select ($savout); |
1805 | } |
1806 | |
36477c24 |
1807 | # Tied method do not create a context, so may get wrong message: |
1808 | |
55497cff |
1809 | sub print_trace { |
1810 | my $fh = shift; |
f1583d8f |
1811 | resetterm(1) if $fh eq $LINEINFO and $LINEINFO eq $OUT and $term_pid != $$; |
36477c24 |
1812 | my @sub = dump_trace($_[0] + 1, $_[1]); |
1813 | my $short = $_[2]; # Print short report, next one for sub name |
1d06cb2d |
1814 | my $s; |
55497cff |
1815 | for ($i=0; $i <= $#sub; $i++) { |
1816 | last if $signal; |
1817 | local $" = ', '; |
1818 | my $args = defined $sub[$i]{args} |
1819 | ? "(@{ $sub[$i]{args} })" |
1820 | : '' ; |
1d06cb2d |
1821 | $args = (substr $args, 0, $maxtrace - 3) . '...' |
1822 | if length $args > $maxtrace; |
36477c24 |
1823 | my $file = $sub[$i]{file}; |
1824 | $file = $file eq '-e' ? $file : "file `$file'" unless $short; |
1d06cb2d |
1825 | $s = $sub[$i]{sub}; |
1826 | $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace; |
36477c24 |
1827 | if ($short) { |
1d06cb2d |
1828 | my $sub = @_ >= 4 ? $_[3] : $s; |
36477c24 |
1829 | print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n"; |
1830 | } else { |
1d06cb2d |
1831 | print $fh "$sub[$i]{context} = $s$args" . |
36477c24 |
1832 | " called from $file" . |
1833 | " line $sub[$i]{line}\n"; |
1834 | } |
55497cff |
1835 | } |
1836 | } |
1837 | |
1838 | sub dump_trace { |
1839 | my $skip = shift; |
36477c24 |
1840 | my $count = shift || 1e9; |
1841 | $skip++; |
1842 | $count += $skip; |
55497cff |
1843 | my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context); |
04fb8f4b |
1844 | my $nothard = not $frame & 8; |
1845 | local $frame = 0; # Do not want to trace this. |
1846 | my $otrace = $trace; |
1847 | $trace = 0; |
55497cff |
1848 | for ($i = $skip; |
36477c24 |
1849 | $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i); |
55497cff |
1850 | $i++) { |
1851 | @a = (); |
1852 | for $arg (@args) { |
04fb8f4b |
1853 | my $type; |
1854 | if (not defined $arg) { |
1855 | push @a, "undef"; |
1856 | } elsif ($nothard and tied $arg) { |
1857 | push @a, "tied"; |
1858 | } elsif ($nothard and $type = ref $arg) { |
1859 | push @a, "ref($type)"; |
1860 | } else { |
1861 | local $_ = "$arg"; # Safe to stringify now - should not call f(). |
1862 | s/([\'\\])/\\$1/g; |
1863 | s/(.*)/'$1'/s |
1864 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; |
1865 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
1866 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
1867 | push(@a, $_); |
1868 | } |
55497cff |
1869 | } |
7ea36084 |
1870 | $context = $context ? '@' : (defined $context ? "\$" : '.'); |
55497cff |
1871 | $args = $h ? [@a] : undef; |
1872 | $e =~ s/\n\s*\;\s*\Z// if $e; |
1d06cb2d |
1873 | $e =~ s/([\\\'])/\\$1/g if $e; |
55497cff |
1874 | if ($r) { |
1875 | $sub = "require '$e'"; |
1876 | } elsif (defined $r) { |
1877 | $sub = "eval '$e'"; |
1878 | } elsif ($sub eq '(eval)') { |
1879 | $sub = "eval {...}"; |
1880 | } |
1881 | push(@sub, {context => $context, sub => $sub, args => $args, |
1882 | file => $file, line => $line}); |
1883 | last if $signal; |
1884 | } |
04fb8f4b |
1885 | $trace = $otrace; |
55497cff |
1886 | @sub; |
1887 | } |
1888 | |
d338d6fe |
1889 | sub action { |
1890 | my $action = shift; |
1891 | while ($action =~ s/\\$//) { |
1892 | #print $OUT "+ "; |
1893 | #$action .= "\n"; |
1894 | $action .= &gets; |
1895 | } |
1896 | $action; |
1897 | } |
1898 | |
055fd3a9 |
1899 | sub unbalanced { |
1900 | # i hate using globals! |
1901 | $balanced_brace_re ||= qr{ |
1902 | ^ \{ |
1903 | (?: |
1904 | (?> [^{}] + ) # Non-parens without backtracking |
1905 | | |
1906 | (??{ $balanced_brace_re }) # Group with matching parens |
1907 | ) * |
1908 | \} $ |
1909 | }x; |
1910 | return $_[0] !~ m/$balanced_brace_re/; |
1911 | } |
1912 | |
d338d6fe |
1913 | sub gets { |
d338d6fe |
1914 | &readline("cont: "); |
1915 | } |
1916 | |
1917 | sub system { |
1918 | # We save, change, then restore STDIN and STDOUT to avoid fork() since |
055fd3a9 |
1919 | # some non-Unix systems can do system() but have problems with fork(). |
d338d6fe |
1920 | open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN"); |
8ee058cb |
1921 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
d338d6fe |
1922 | open(STDIN,"<&IN") || &warn("Can't redirect STDIN"); |
1923 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
055fd3a9 |
1924 | |
1925 | # XXX: using csh or tcsh destroys sigint retvals! |
d338d6fe |
1926 | system(@_); |
1927 | open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN"); |
1928 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
055fd3a9 |
1929 | close(SAVEIN); |
1930 | close(SAVEOUT); |
1931 | |
1932 | |
1933 | # most of the $? crud was coping with broken cshisms |
1934 | if ($? >> 8) { |
1935 | &warn("(Command exited ", ($? >> 8), ")\n"); |
1936 | } elsif ($?) { |
1937 | &warn( "(Command died of SIG#", ($? & 127), |
1938 | (($? & 128) ? " -- core dumped" : "") , ")", "\n"); |
1939 | } |
1940 | |
1941 | return $?; |
1942 | |
d338d6fe |
1943 | } |
1944 | |
1945 | sub setterm { |
54d04a52 |
1946 | local $frame = 0; |
ee971a18 |
1947 | local $doret = -2; |
ee971a18 |
1948 | eval { require Term::ReadLine } or die $@; |
d338d6fe |
1949 | if ($notty) { |
1950 | if ($tty) { |
f1583d8f |
1951 | my ($i, $o) = split $tty, /,/; |
1952 | $o = $i unless defined $o; |
1953 | open(IN,"<$i") or die "Cannot open TTY `$i' for read: $!"; |
1954 | open(OUT,">$o") or die "Cannot open TTY `$o' for write: $!"; |
d338d6fe |
1955 | $IN = \*IN; |
1956 | $OUT = \*OUT; |
1957 | my $sel = select($OUT); |
1958 | $| = 1; |
1959 | select($sel); |
1960 | } else { |
3dcd9d33 |
1961 | eval "require Term::Rendezvous;" or die; |
d338d6fe |
1962 | my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; |
1963 | my $term_rv = new Term::Rendezvous $rv; |
1964 | $IN = $term_rv->IN; |
1965 | $OUT = $term_rv->OUT; |
1966 | } |
1967 | } |
f1583d8f |
1968 | if ($term_pid eq '-1') { # In a TTY with another debugger |
1969 | resetterm(2); |
1970 | } |
d338d6fe |
1971 | if (!$rl) { |
1972 | $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; |
1973 | } else { |
1974 | $term = new Term::ReadLine 'perldb', $IN, $OUT; |
1975 | |
a737e074 |
1976 | $rl_attribs = $term->Attribs; |
1977 | $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}' |
1978 | if defined $rl_attribs->{basic_word_break_characters} |
1979 | and index($rl_attribs->{basic_word_break_characters}, ":") == -1; |
1980 | $rl_attribs->{special_prefixes} = '$@&%'; |
1981 | $rl_attribs->{completer_word_break_characters} .= '$@&%'; |
1982 | $rl_attribs->{completion_function} = \&db_complete; |
d338d6fe |
1983 | } |
1984 | $LINEINFO = $OUT unless defined $LINEINFO; |
1985 | $lineinfo = $console unless defined $lineinfo; |
1986 | $term->MinLine(2); |
54d04a52 |
1987 | if ($term->Features->{setHistory} and "@hist" ne "?") { |
1988 | $term->SetHistory(@hist); |
1989 | } |
7a2e2cd6 |
1990 | ornaments($ornaments) if defined $ornaments; |
f36776d9 |
1991 | $term_pid = $$; |
1992 | } |
1993 | |
f1583d8f |
1994 | # Example get_fork_TTY functions |
1995 | sub xterm_get_fork_TTY { |
1996 | (my $name = $0) =~ s,^.*[/\\],,s; |
1997 | open XT, qq[3>&1 xterm -title "Daughter Perl debugger $pids $name" -e sh -c 'tty 1>&3;\ |
f36776d9 |
1998 | sleep 10000000' |]; |
f1583d8f |
1999 | my $tty = <XT>; |
2000 | chomp $tty; |
2001 | $pidprompt = ''; # Shown anyway in titlebar |
2002 | return $tty; |
2003 | } |
2004 | |
2005 | # This one resets $IN, $OUT itself |
2006 | sub os2_get_fork_TTY { |
2007 | $^F = 40; # XXXX Fixme! |
2008 | my ($in1, $out1, $in2, $out2); |
2009 | # Having -d in PERL5OPT would lead to a disaster... |
2010 | local $ENV{PERL5OPT} = $ENV{PERL5OPT} if $ENV{PERL5OPT}; |
2011 | $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\b// if $ENV{PERL5OPT}; |
2012 | $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\B/-/ if $ENV{PERL5OPT}; |
2013 | print $OUT "Making PERL5OPT->`$ENV{PERL5OPT}'.\n" if $ENV{PERL5OPT}; |
2014 | (my $name = $0) =~ s,^.*[/\\],,s; |
2015 | if ( pipe $in1, $out1 and pipe $in2, $out2 and |
2016 | # system P_SESSION will fail if there is another process |
04e43a21 |
2017 | # in the same session with a "dependent" asynchronous child session. |
2018 | (($kpid = CORE::system 4, $^X, '-we', <<'ES', fileno $in1, fileno $out2, "Daughter Perl debugger $pids $name") >= 0 or warn "system P_SESSION: $!, $^E" and 0) # P_SESSION |
f1583d8f |
2019 | use Term::ReadKey; |
2020 | use OS2::Process; |
2021 | |
2022 | my $in = shift; # Read from here and pass through |
2023 | set_title pop; |
2024 | system P_NOWAIT, $^X, '-we', <<EOS or die "Cannot start a grandkid"; |
2025 | open IN, '<&=$in' or die "open <&=$in: \$!"; |
2026 | \$| = 1; print while sysread IN, \$_, 1<<16; |
2027 | EOS |
2028 | |
2029 | my $out = shift; |
2030 | open OUT, ">&=$out" or die "Cannot open &=$out for writing: $!"; |
2031 | select OUT; $| = 1; |
2032 | ReadMode 4; # Nodelay on kbd. Pipe is automatically nodelay... |
2033 | print while sysread STDIN, $_, 1<<16; |
2034 | ES |
2035 | and close $in1 and close $out2 ) { |
2036 | $pidprompt = ''; # Shown anyway in titlebar |
2037 | reset_IN_OUT($in2, $out1); |
2038 | $tty = '*reset*'; |
2039 | return ''; # Indicate that reset_IN_OUT is called |
2040 | } |
2041 | return; |
2042 | } |
2043 | |
2044 | sub create_IN_OUT { # Create a window with IN/OUT handles redirected there |
2045 | my $in = &get_fork_TTY if defined &get_fork_TTY; |
2046 | $in = $fork_TTY if defined $fork_TTY; # Backward compatibility |
2047 | if (not defined $in) { |
2048 | my $why = shift; |
2049 | print_help(<<EOP) if $why == 1; |
2050 | I<#########> Forked, but do not know how to create a new B<TTY>. I<#########> |
2051 | EOP |
2052 | print_help(<<EOP) if $why == 2; |
2053 | I<#########> Daughter session, do not know how to change a B<TTY>. I<#########> |
04e43a21 |
2054 | This may be an asynchronous session, so the parent debugger may be active. |
f1583d8f |
2055 | EOP |
2056 | print_help(<<EOP) if $why != 4; |
2057 | Since two debuggers fight for the same TTY, input is severely entangled. |
2058 | |
2059 | EOP |
405ff068 |
2060 | print_help(<<EOP); |
f1583d8f |
2061 | I know how to switch the output to a different window in xterms |
2062 | and OS/2 consoles only. For a manual switch, put the name of the created I<TTY> |
2063 | in B<\$DB::fork_TTY>, or define a function B<DB::get_fork_TTY()> returning this. |
2064 | |
405ff068 |
2065 | On I<UNIX>-like systems one can get the name of a I<TTY> for the given window |
2066 | by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>. |
f1583d8f |
2067 | |
405ff068 |
2068 | EOP |
f1583d8f |
2069 | } elsif ($in ne '') { |
2070 | TTY($in); |
f36776d9 |
2071 | } |
f1583d8f |
2072 | undef $fork_TTY; |
2073 | } |
2074 | |
2075 | sub resetterm { # We forked, so we need a different TTY |
2076 | my $in = shift; |
2077 | my $systemed = $in > 1 ? '-' : ''; |
2078 | if ($pids) { |
2079 | $pids =~ s/\]/$systemed->$$]/; |
2080 | } else { |
2081 | $pids = "[$term_pid->$$]"; |
2082 | } |
2083 | $pidprompt = $pids; |
2084 | $term_pid = $$; |
2085 | return unless $CreateTTY & $in; |
2086 | create_IN_OUT($in); |
d338d6fe |
2087 | } |
2088 | |
2089 | sub readline { |
0c01eb4a |
2090 | local $.; |
54d04a52 |
2091 | if (@typeahead) { |
2092 | my $left = @typeahead; |
2093 | my $got = shift @typeahead; |
2094 | print $OUT "auto(-$left)", shift, $got, "\n"; |
2095 | $term->AddHistory($got) |
2096 | if length($got) > 1 and defined $term->Features->{addHistory}; |
2097 | return $got; |
2098 | } |
d338d6fe |
2099 | local $frame = 0; |
ee971a18 |
2100 | local $doret = -2; |
363b4d59 |
2101 | if (ref $OUT and UNIVERSAL::isa($OUT, 'IO::Socket::INET')) { |
e4e99f0d |
2102 | $OUT->write(join('', @_)); |
363b4d59 |
2103 | my $stuff; |
055fd3a9 |
2104 | $IN->recv( $stuff, 2048 ); # XXX: what's wrong with sysread? |
363b4d59 |
2105 | $stuff; |
2106 | } |
2107 | else { |
2108 | $term->readline(@_); |
2109 | } |
d338d6fe |
2110 | } |
2111 | |
2112 | sub dump_option { |
2113 | my ($opt, $val)= @_; |
55497cff |
2114 | $val = option_val($opt,'N/A'); |
2115 | $val =~ s/([\\\'])/\\$1/g; |
2116 | printf $OUT "%20s = '%s'\n", $opt, $val; |
2117 | } |
2118 | |
2119 | sub option_val { |
2120 | my ($opt, $default)= @_; |
2121 | my $val; |
d338d6fe |
2122 | if (defined $optionVars{$opt} |
055fd3a9 |
2123 | and defined ${$optionVars{$opt}}) { |
2124 | $val = ${$optionVars{$opt}}; |
d338d6fe |
2125 | } elsif (defined $optionAction{$opt} |
2126 | and defined &{$optionAction{$opt}}) { |
2127 | $val = &{$optionAction{$opt}}(); |
2128 | } elsif (defined $optionAction{$opt} |
2129 | and not defined $option{$opt} |
2130 | or defined $optionVars{$opt} |
055fd3a9 |
2131 | and not defined ${$optionVars{$opt}}) { |
55497cff |
2132 | $val = $default; |
d338d6fe |
2133 | } else { |
2134 | $val = $option{$opt}; |
2135 | } |
600d99fa |
2136 | $val = $default unless defined $val; |
55497cff |
2137 | $val |
d338d6fe |
2138 | } |
2139 | |
2140 | sub parse_options { |
2141 | local($_)= @_; |
055fd3a9 |
2142 | # too dangerous to let intuitive usage overwrite important things |
2143 | # defaultion should never be the default |
2144 | my %opt_needs_val = map { ( $_ => 1 ) } qw{ |
24eeb834 |
2145 | arrayDepth hashDepth LineInfo maxTraceLen ornaments |
055fd3a9 |
2146 | pager quote ReadLine recallCommand RemotePort ShellBang TTY |
2147 | }; |
2148 | while (length) { |
2149 | my $val_defaulted; |
2150 | s/^\s+// && next; |
2151 | s/^(\w+)(\W?)// or print($OUT "Invalid option `$_'\n"), last; |
d338d6fe |
2152 | my ($opt,$sep) = ($1,$2); |
2153 | my $val; |
2154 | if ("?" eq $sep) { |
2155 | print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last |
2156 | if /^\S/; |
2157 | #&dump_option($opt); |
2158 | } elsif ($sep !~ /\S/) { |
055fd3a9 |
2159 | $val_defaulted = 1; |
2160 | $val = "1"; # this is an evil default; make 'em set it! |
d338d6fe |
2161 | } elsif ($sep eq "=") { |
055fd3a9 |
2162 | |
2163 | if (s/ (["']) ( (?: \\. | (?! \1 ) [^\\] )* ) \1 //x) { |
2164 | my $quote = $1; |
2165 | ($val = $2) =~ s/\\([$quote\\])/$1/g; |
2166 | } else { |
2167 | s/^(\S*)//; |
d338d6fe |
2168 | $val = $1; |
055fd3a9 |
2169 | print OUT qq(Option better cleared using $opt=""\n) |
2170 | unless length $val; |
2171 | } |
2172 | |
d338d6fe |
2173 | } else { #{ to "let some poor schmuck bounce on the % key in B<vi>." |
2174 | my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #} |
2175 | s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or |
2176 | print($OUT "Unclosed option value `$opt$sep$_'\n"), last; |
055fd3a9 |
2177 | ($val = $1) =~ s/\\([\\$end])/$1/g; |
d338d6fe |
2178 | } |
055fd3a9 |
2179 | |
2180 | my $option; |
2181 | my $matches = grep( /^\Q$opt/ && ($option = $_), @options ) |
2182 | || grep( /^\Q$opt/i && ($option = $_), @options ); |
2183 | |
2184 | print($OUT "Unknown option `$opt'\n"), next unless $matches; |
2185 | print($OUT "Ambiguous option `$opt'\n"), next if $matches > 1; |
2186 | |
2187 | if ($opt_needs_val{$option} && $val_defaulted) { |
2188 | print $OUT "Option `$opt' is non-boolean. Use `O $option=VAL' to set, `O $option?' to query\n"; |
2189 | next; |
2190 | } |
2191 | |
2192 | $option{$option} = $val if defined $val; |
2193 | |
2194 | eval qq{ |
2195 | local \$frame = 0; |
2196 | local \$doret = -2; |
2197 | require '$optionRequire{$option}'; |
2198 | 1; |
2199 | } || die # XXX: shouldn't happen |
2200 | if defined $optionRequire{$option} && |
2201 | defined $val; |
2202 | |
2203 | ${$optionVars{$option}} = $val |
2204 | if defined $optionVars{$option} && |
2205 | defined $val; |
2206 | |
2207 | &{$optionAction{$option}} ($val) |
2208 | if defined $optionAction{$option} && |
2209 | defined &{$optionAction{$option}} && |
2210 | defined $val; |
2211 | |
2212 | # Not $rcfile |
2213 | dump_option($option) unless $OUT eq \*STDERR; |
d338d6fe |
2214 | } |
2215 | } |
2216 | |
54d04a52 |
2217 | sub set_list { |
2218 | my ($stem,@list) = @_; |
2219 | my $val; |
055fd3a9 |
2220 | $ENV{"${stem}_n"} = @list; |
54d04a52 |
2221 | for $i (0 .. $#list) { |
2222 | $val = $list[$i]; |
2223 | $val =~ s/\\/\\\\/g; |
ee971a18 |
2224 | $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg; |
055fd3a9 |
2225 | $ENV{"${stem}_$i"} = $val; |
54d04a52 |
2226 | } |
2227 | } |
2228 | |
2229 | sub get_list { |
2230 | my $stem = shift; |
2231 | my @list; |
055fd3a9 |
2232 | my $n = delete $ENV{"${stem}_n"}; |
54d04a52 |
2233 | my $val; |
2234 | for $i (0 .. $n - 1) { |
055fd3a9 |
2235 | $val = delete $ENV{"${stem}_$i"}; |
54d04a52 |
2236 | $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge; |
2237 | push @list, $val; |
2238 | } |
2239 | @list; |
2240 | } |
2241 | |
d338d6fe |
2242 | sub catch { |
2243 | $signal = 1; |
4639966b |
2244 | return; # Put nothing on the stack - malloc/free land! |
d338d6fe |
2245 | } |
2246 | |
2247 | sub warn { |
2248 | my($msg)= join("",@_); |
2249 | $msg .= ": $!\n" unless $msg =~ /\n$/; |
2250 | print $OUT $msg; |
2251 | } |
2252 | |
f1583d8f |
2253 | sub reset_IN_OUT { |
2254 | my $switch_li = $LINEINFO eq $OUT; |
2255 | if ($term and $term->Features->{newTTY}) { |
2256 | ($IN, $OUT) = (shift, shift); |
2257 | $term->newTTY($IN, $OUT); |
2258 | } elsif ($term) { |
2259 | &warn("Too late to set IN/OUT filehandles, enabled on next `R'!\n"); |
2260 | } else { |
2261 | ($IN, $OUT) = (shift, shift); |
2262 | } |
2263 | my $o = select $OUT; |
2264 | $| = 1; |
2265 | select $o; |
2266 | $LINEINFO = $OUT if $switch_li; |
2267 | } |
2268 | |
d338d6fe |
2269 | sub TTY { |
f36776d9 |
2270 | if (@_ and $term and $term->Features->{newTTY}) { |
2271 | my ($in, $out) = shift; |
2272 | if ($in =~ /,/) { |
2273 | ($in, $out) = split /,/, $in, 2; |
2274 | } else { |
2275 | $out = $in; |
2276 | } |
2277 | open IN, $in or die "cannot open `$in' for read: $!"; |
2278 | open OUT, ">$out" or die "cannot open `$out' for write: $!"; |
f1583d8f |
2279 | reset_IN_OUT(\*IN,\*OUT); |
f36776d9 |
2280 | return $tty = $in; |
f1583d8f |
2281 | } |
2282 | &warn("Too late to set TTY, enabled on next `R'!\n") if $term and @_; |
2283 | # Useful if done through PERLDB_OPTS: |
43aed9ee |
2284 | $tty = shift if @_; |
d338d6fe |
2285 | $tty or $console; |
2286 | } |
2287 | |
2288 | sub noTTY { |
2289 | if ($term) { |
43aed9ee |
2290 | &warn("Too late to set noTTY, enabled on next `R'!\n") if @_; |
d338d6fe |
2291 | } |
43aed9ee |
2292 | $notty = shift if @_; |
d338d6fe |
2293 | $notty; |
2294 | } |
2295 | |
2296 | sub ReadLine { |
2297 | if ($term) { |
43aed9ee |
2298 | &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_; |
d338d6fe |
2299 | } |
43aed9ee |
2300 | $rl = shift if @_; |
d338d6fe |
2301 | $rl; |
2302 | } |
2303 | |
363b4d59 |
2304 | sub RemotePort { |
2305 | if ($term) { |
2306 | &warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_; |
2307 | } |
2308 | $remoteport = shift if @_; |
2309 | $remoteport; |
2310 | } |
2311 | |
a737e074 |
2312 | sub tkRunning { |
055fd3a9 |
2313 | if (${$term->Features}{tkRunning}) { |
a737e074 |
2314 | return $term->tkRunning(@_); |
2315 | } else { |
2316 | print $OUT "tkRunning not supported by current ReadLine package.\n"; |
2317 | 0; |
2318 | } |
2319 | } |
2320 | |
d338d6fe |
2321 | sub NonStop { |
2322 | if ($term) { |
43aed9ee |
2323 | &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_; |
d338d6fe |
2324 | } |
43aed9ee |
2325 | $runnonstop = shift if @_; |
d338d6fe |
2326 | $runnonstop; |
2327 | } |
2328 | |
2329 | sub pager { |
2330 | if (@_) { |
2331 | $pager = shift; |
2332 | $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; |
2333 | } |
2334 | $pager; |
2335 | } |
2336 | |
2337 | sub shellBang { |
2338 | if (@_) { |
2339 | $sh = quotemeta shift; |
2340 | $sh .= "\\b" if $sh =~ /\w$/; |
2341 | } |
2342 | $psh = $sh; |
2343 | $psh =~ s/\\b$//; |
2344 | $psh =~ s/\\(.)/$1/g; |
d338d6fe |
2345 | $psh; |
2346 | } |
2347 | |
7a2e2cd6 |
2348 | sub ornaments { |
2349 | if (defined $term) { |
2350 | local ($warnLevel,$dieLevel) = (0, 1); |
2351 | return '' unless $term->Features->{ornaments}; |
2352 | eval { $term->ornaments(@_) } || ''; |
2353 | } else { |
2354 | $ornaments = shift; |
2355 | } |
2356 | } |
2357 | |
d338d6fe |
2358 | sub recallCommand { |
2359 | if (@_) { |
2360 | $rc = quotemeta shift; |
2361 | $rc .= "\\b" if $rc =~ /\w$/; |
2362 | } |
2363 | $prc = $rc; |
2364 | $prc =~ s/\\b$//; |
2365 | $prc =~ s/\\(.)/$1/g; |
d338d6fe |
2366 | $prc; |
2367 | } |
2368 | |
2369 | sub LineInfo { |
2370 | return $lineinfo unless @_; |
2371 | $lineinfo = shift; |
2372 | my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; |
055fd3a9 |
2373 | $slave_editor = ($stream =~ /^\|/); |
d338d6fe |
2374 | open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); |
2375 | $LINEINFO = \*LINEINFO; |
2376 | my $save = select($LINEINFO); |
2377 | $| = 1; |
2378 | select($save); |
2379 | $lineinfo; |
2380 | } |
2381 | |
ee971a18 |
2382 | sub list_versions { |
2383 | my %version; |
2384 | my $file; |
2385 | for (keys %INC) { |
2386 | $file = $_; |
2387 | s,\.p[lm]$,,i ; |
2388 | s,/,::,g ; |
2389 | s/^perl5db$/DB/; |
55497cff |
2390 | s/^Term::ReadLine::readline$/readline/; |
055fd3a9 |
2391 | if (defined ${ $_ . '::VERSION' }) { |
2392 | $version{$file} = "${ $_ . '::VERSION' } from "; |
ee971a18 |
2393 | } |
2394 | $version{$file} .= $INC{$file}; |
2395 | } |
2c53b6d0 |
2396 | dumpit($OUT,\%version); |
ee971a18 |
2397 | } |
2398 | |
d338d6fe |
2399 | sub sethelp { |
04e43a21 |
2400 | # XXX: make sure there are tabs between the command and explanation, |
055fd3a9 |
2401 | # or print_help will screw up your formatting if you have |
2402 | # eeevil ornaments enabled. This is an insane mess. |
2403 | |
d338d6fe |
2404 | $help = " |
6027b9a3 |
2405 | B<T> Stack trace. |
2406 | B<s> [I<expr>] Single step [in I<expr>]. |
2407 | B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>]. |
2408 | <B<CR>> Repeat last B<n> or B<s> command. |
2409 | B<r> Return from current subroutine. |
2410 | B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint |
55497cff |
2411 | at the specified position. |
6027b9a3 |
2412 | B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>. |
2413 | B<l> I<min>B<->I<max> List lines I<min> through I<max>. |
2414 | B<l> I<line> List single I<line>. |
2415 | B<l> I<subname> List first window of lines from subroutine. |
3fbd6552 |
2416 | B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>. |
6027b9a3 |
2417 | B<l> List next window of lines. |
2418 | B<-> List previous window of lines. |
2419 | B<w> [I<line>] List window around I<line>. |
2420 | B<.> Return to the executed line. |
bee32ff8 |
2421 | B<f> I<filename> Switch to viewing I<filename>. File must be already loaded. |
2422 | I<filename> may be either the full name of the file, or a regular |
2423 | expression matching the full file name: |
2424 | B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file. |
2425 | Evals (with saved bodies) are considered to be filenames: |
2426 | B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval |
2427 | (in the order of execution). |
6027b9a3 |
2428 | B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional. |
2429 | B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional. |
2430 | B<L> List all breakpoints and actions. |
2431 | B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>. |
2432 | B<t> Toggle trace mode. |
2433 | B<t> I<expr> Trace through execution of I<expr>. |
2434 | B<b> [I<line>] [I<condition>] |
2435 | Set breakpoint; I<line> defaults to the current execution line; |
2436 | I<condition> breaks if it evaluates to true, defaults to '1'. |
2437 | B<b> I<subname> [I<condition>] |
d338d6fe |
2438 | Set breakpoint at first line of subroutine. |
3fbd6552 |
2439 | B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>. |
6027b9a3 |
2440 | B<b> B<load> I<filename> Set breakpoint on `require'ing the given file. |
2441 | B<b> B<postpone> I<subname> [I<condition>] |
55497cff |
2442 | Set breakpoint at first line of subroutine after |
2443 | it is compiled. |
6027b9a3 |
2444 | B<b> B<compile> I<subname> |
1d06cb2d |
2445 | Stop after the subroutine is compiled. |
6027b9a3 |
2446 | B<d> [I<line>] Delete the breakpoint for I<line>. |
2447 | B<D> Delete all breakpoints. |
2448 | B<a> [I<line>] I<command> |
3fbd6552 |
2449 | Set an action to be done before the I<line> is executed; |
2450 | I<line> defaults to the current execution line. |
6027b9a3 |
2451 | Sequence is: check for breakpoint/watchpoint, print line |
2452 | if necessary, do action, prompt user if necessary, |
3fbd6552 |
2453 | execute line. |
2454 | B<a> [I<line>] Delete the action for I<line>. |
6027b9a3 |
2455 | B<A> Delete all actions. |
2456 | B<W> I<expr> Add a global watch-expression. |
2457 | B<W> Delete all watch-expressions. |
2458 | B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current). |
2459 | Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps. |
2460 | B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\". |
91e74348 |
2461 | B<x> I<expr> Evals expression in list context, dumps the result. |
2462 | B<m> I<expr> Evals expression in list context, prints methods callable |
1d06cb2d |
2463 | on the first element of the result. |
6027b9a3 |
2464 | B<m> I<class> Prints methods callable via the given class. |
055fd3a9 |
2465 | |
2466 | B<<> ? List Perl commands to run before each prompt. |
6027b9a3 |
2467 | B<<> I<expr> Define Perl command to run before each prompt. |
2468 | B<<<> I<expr> Add to the list of Perl commands to run before each prompt. |
055fd3a9 |
2469 | B<>> ? List Perl commands to run after each prompt. |
6027b9a3 |
2470 | B<>> I<expr> Define Perl command to run after each prompt. |
3fbd6552 |
2471 | B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt. |
6027b9a3 |
2472 | B<{> I<db_command> Define debugger command to run before each prompt. |
055fd3a9 |
2473 | B<{> ? List debugger commands to run before each prompt. |
6027b9a3 |
2474 | B<{{> I<db_command> Add to the list of debugger commands to run before each prompt. |
2475 | B<$prc> I<number> Redo a previous command (default previous command). |
2476 | B<$prc> I<-number> Redo number'th-to-last command. |
2477 | B<$prc> I<pattern> Redo last command that started with I<pattern>. |
2478 | See 'B<O> I<recallCommand>' too. |
2479 | B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" |
d338d6fe |
2480 | . ( $rc eq $sh ? "" : " |
6027b9a3 |
2481 | B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " |
2482 | See 'B<O> I<shellBang>' too. |
2483 | B<H> I<-number> Display last number commands (default all). |
2484 | B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package. |
2485 | B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager. |
2486 | B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well. |
2487 | B<\=> [I<alias> I<value>] Define a command alias, or list current aliases. |
2488 | I<command> Execute as a perl statement in current package. |
2489 | B<v> Show versions of loaded modules. |
2490 | B<R> Pure-man-restart of debugger, some of debugger state |
55497cff |
2491 | and command-line options may be lost. |
04e43a21 |
2492 | Currently the following settings are preserved: |
6027b9a3 |
2493 | history, breakpoints and actions, debugger B<O>ptions |
2494 | and the following command-line options: I<-w>, I<-I>, I<-e>. |
055fd3a9 |
2495 | |
2496 | B<O> [I<opt>] ... Set boolean option to true |
2497 | B<O> [I<opt>B<?>] Query options |
2498 | B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ... |
2499 | Set options. Use quotes in spaces in value. |
2500 | I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell; |
2501 | I<pager> program for output of \"|cmd\"; |
2502 | I<tkRunning> run Tk while prompting (with ReadLine); |
2503 | I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity; |
2504 | I<inhibit_exit> Allows stepping off the end of the script. |
2505 | I<ImmediateStop> Debugger should stop as early as possible. |
2506 | I<RemotePort> Remote hostname:port for remote debugging |
2507 | The following options affect what happens with B<V>, B<X>, and B<x> commands: |
2508 | I<arrayDepth>, I<hashDepth> print only first N elements ('' for all); |
2509 | I<compactDump>, I<veryCompact> change style of array and hash dump; |
2510 | I<globPrint> whether to print contents of globs; |
2511 | I<DumpDBFiles> dump arrays holding debugged files; |
2512 | I<DumpPackages> dump symbol tables of packages; |
2513 | I<DumpReused> dump contents of \"reused\" addresses; |
2514 | I<quote>, I<HighBit>, I<undefPrint> change style of string dump; |
2515 | I<bareStringify> Do not print the overload-stringified value; |
2516 | Other options include: |
2517 | I<PrintRet> affects printing of return value after B<r> command, |
04e43a21 |
2518 | I<frame> affects printing messages on subroutine entry/exit. |
2519 | I<AutoTrace> affects printing messages on possible breaking points. |
2520 | I<maxTraceLen> gives max length of evals/args listed in stack trace. |
055fd3a9 |
2521 | I<ornaments> affects screen appearance of the command line. |
f1583d8f |
2522 | I<CreateTTY> bits control attempts to create a new TTY on events: |
2523 | 1: on fork() 2: debugger is started inside debugger |
2524 | 4: on startup |
055fd3a9 |
2525 | During startup options are initialized from \$ENV{PERLDB_OPTS}. |
2526 | You can put additional initialization options I<TTY>, I<noTTY>, |
2527 | I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use |
2528 | `B<R>' after you set them). |
2529 | |
2530 | B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction. |
6027b9a3 |
2531 | B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page. |
2532 | B<h h> Summary of debugger commands. |
055fd3a9 |
2533 | B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the |
2534 | named Perl I<manpage>, or on B<$doccmd> itself if omitted. |
2535 | Set B<\$DB::doccmd> to change viewer. |
2536 | |
2537 | Type `|h' for a paged display if this was too hard to read. |
2538 | |
04e43a21 |
2539 | "; # Fix balance of vi % matching: }}}} |
d338d6fe |
2540 | |
c391288e |
2541 | # note: tabs in the following section are not-so-helpful |
d338d6fe |
2542 | $summary = <<"END_SUM"; |
6027b9a3 |
2543 | I<List/search source lines:> I<Control script execution:> |
2544 | B<l> [I<ln>|I<sub>] List source code B<T> Stack trace |
2545 | B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr] |
2546 | B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs |
d9f67849 |
2547 | B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s> |
6027b9a3 |
2548 | B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine |
c391288e |
2549 | B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position |
6027b9a3 |
2550 | I<Debugger controls:> B<L> List break/watch/actions |
2551 | B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr] |
d9f67849 |
2552 | B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint |
6027b9a3 |
2553 | B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints |
2554 | B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line |
2555 | B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression |
2556 | B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch |
d9f67849 |
2557 | B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess |
c391288e |
2558 | B<q> or B<^D> Quit B<R> Attempt a restart |
2559 | I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr> |
2560 | B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods. |
2561 | B<p> I<expr> Print expression (uses script's current package). |
2562 | B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern |
2563 | B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern. |
2564 | B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\". |
055fd3a9 |
2565 | For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs. |
d338d6fe |
2566 | END_SUM |
055fd3a9 |
2567 | # ')}}; # Fix balance of vi % matching |
d338d6fe |
2568 | } |
2569 | |
6027b9a3 |
2570 | sub print_help { |
055fd3a9 |
2571 | local $_ = shift; |
2572 | |
2573 | # Restore proper alignment destroyed by eeevil I<> and B<> |
2574 | # ornaments: A pox on both their houses! |
2575 | # |
2576 | # A help command will have everything up to and including |
04e43a21 |
2577 | # the first tab sequence padded into a field 16 (or if indented 20) |
2578 | # wide. If it's wider than that, an extra space will be added. |
055fd3a9 |
2579 | s{ |
2580 | ^ # only matters at start of line |
2581 | ( \040{4} | \t )* # some subcommands are indented |
2582 | ( < ? # so <CR> works |
2583 | [BI] < [^\t\n] + ) # find an eeevil ornament |
2584 | ( \t+ ) # original separation, discarded |
2585 | ( .* ) # this will now start (no earlier) than |
2586 | # column 16 |
2587 | } { |
2588 | my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4); |
2589 | my $clean = $command; |
2590 | $clean =~ s/[BI]<([^>]*)>/$1/g; |
2591 | # replace with this whole string: |
04e43a21 |
2592 | ($leadwhite ? " " x 4 : "") |
055fd3a9 |
2593 | . $command |
04e43a21 |
2594 | . ((" " x (16 + ($leadwhite ? 4 : 0) - length($clean))) || " ") |
055fd3a9 |
2595 | . $text; |
2596 | |
2597 | }mgex; |
2598 | |
2599 | s{ # handle bold ornaments |
2600 | B < ( [^>] + | > ) > |
2601 | } { |
2602 | $Term::ReadLine::TermCap::rl_term_set[2] |
2603 | . $1 |
2604 | . $Term::ReadLine::TermCap::rl_term_set[3] |
2605 | }gex; |
2606 | |
2607 | s{ # handle italic ornaments |
2608 | I < ( [^>] + | > ) > |
2609 | } { |
2610 | $Term::ReadLine::TermCap::rl_term_set[0] |
2611 | . $1 |
2612 | . $Term::ReadLine::TermCap::rl_term_set[1] |
2613 | }gex; |
2614 | |
2615 | print $OUT $_; |
2616 | } |
2617 | |
2618 | sub fix_less { |
2619 | return if defined $ENV{LESS} && $ENV{LESS} =~ /r/; |
2620 | my $is_less = $pager =~ /\bless\b/; |
2621 | if ($pager =~ /\bmore\b/) { |
2622 | my @st_more = stat('/usr/bin/more'); |
2623 | my @st_less = stat('/usr/bin/less'); |
2624 | $is_less = @st_more && @st_less |
2625 | && $st_more[0] == $st_less[0] |
2626 | && $st_more[1] == $st_less[1]; |
2627 | } |
2628 | # changes environment! |
2629 | $ENV{LESS} .= 'r' if $is_less; |
6027b9a3 |
2630 | } |
2631 | |
d338d6fe |
2632 | sub diesignal { |
54d04a52 |
2633 | local $frame = 0; |
ee971a18 |
2634 | local $doret = -2; |
77fb7b16 |
2635 | $SIG{'ABRT'} = 'DEFAULT'; |
d338d6fe |
2636 | kill 'ABRT', $$ if $panic++; |
ee85b803 |
2637 | if (defined &Carp::longmess) { |
2638 | local $SIG{__WARN__} = ''; |
2639 | local $Carp::CarpLevel = 2; # mydie + confess |
2640 | &warn(Carp::longmess("Signal @_")); |
2641 | } |
2642 | else { |
2643 | print $DB::OUT "Got signal @_\n"; |
2644 | } |
d338d6fe |
2645 | kill 'ABRT', $$; |
2646 | } |
2647 | |
2648 | sub dbwarn { |
54d04a52 |
2649 | local $frame = 0; |
ee971a18 |
2650 | local $doret = -2; |
d338d6fe |
2651 | local $SIG{__WARN__} = ''; |
77fb7b16 |
2652 | local $SIG{__DIE__} = ''; |
fb73857a |
2653 | eval { require Carp } if defined $^S; # If error/warning during compilation, |
2654 | # require may be broken. |
04e43a21 |
2655 | CORE::warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"), |
fb73857a |
2656 | return unless defined &Carp::longmess; |
d338d6fe |
2657 | my ($mysingle,$mytrace) = ($single,$trace); |
2658 | $single = 0; $trace = 0; |
2659 | my $mess = Carp::longmess(@_); |
2660 | ($single,$trace) = ($mysingle,$mytrace); |
d338d6fe |
2661 | &warn($mess); |
d338d6fe |
2662 | } |
2663 | |
2664 | sub dbdie { |
54d04a52 |
2665 | local $frame = 0; |
ee971a18 |
2666 | local $doret = -2; |
d338d6fe |
2667 | local $SIG{__DIE__} = ''; |
2668 | local $SIG{__WARN__} = ''; |
2669 | my $i = 0; my $ineval = 0; my $sub; |
fb73857a |
2670 | if ($dieLevel > 2) { |
d338d6fe |
2671 | local $SIG{__WARN__} = \&dbwarn; |
fb73857a |
2672 | &warn(@_); # Yell no matter what |
2673 | return; |
2674 | } |
2675 | if ($dieLevel < 2) { |
2676 | die @_ if $^S; # in eval propagate |
d338d6fe |
2677 | } |
fb73857a |
2678 | eval { require Carp } if defined $^S; # If error/warning during compilation, |
2679 | # require may be broken. |
055fd3a9 |
2680 | |
fb73857a |
2681 | die(@_, "\nCannot print stack trace, load with -MCarp option to see stack") |
2682 | unless defined &Carp::longmess; |
055fd3a9 |
2683 | |
d338d6fe |
2684 | # We do not want to debug this chunk (automatic disabling works |
2685 | # inside DB::DB, but not in Carp). |
2686 | my ($mysingle,$mytrace) = ($single,$trace); |
2687 | $single = 0; $trace = 0; |
2688 | my $mess = Carp::longmess(@_); |
2689 | ($single,$trace) = ($mysingle,$mytrace); |
d338d6fe |
2690 | die $mess; |
2691 | } |
2692 | |
d338d6fe |
2693 | sub warnLevel { |
2694 | if (@_) { |
2695 | $prevwarn = $SIG{__WARN__} unless $warnLevel; |
2696 | $warnLevel = shift; |
2697 | if ($warnLevel) { |
0b7ed949 |
2698 | $SIG{__WARN__} = \&DB::dbwarn; |
04e43a21 |
2699 | } elsif ($prevwarn) { |
d338d6fe |
2700 | $SIG{__WARN__} = $prevwarn; |
2701 | } |
2702 | } |
2703 | $warnLevel; |
2704 | } |
2705 | |
2706 | sub dieLevel { |
2707 | if (@_) { |
2708 | $prevdie = $SIG{__DIE__} unless $dieLevel; |
2709 | $dieLevel = shift; |
2710 | if ($dieLevel) { |
0b7ed949 |
2711 | $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2; |
2712 | #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2; |
d338d6fe |
2713 | print $OUT "Stack dump during die enabled", |
43aed9ee |
2714 | ( $dieLevel == 1 ? " outside of evals" : ""), ".\n" |
2715 | if $I_m_init; |
d338d6fe |
2716 | print $OUT "Dump printed too.\n" if $dieLevel > 2; |
04e43a21 |
2717 | } elsif ($prevdie) { |
d338d6fe |
2718 | $SIG{__DIE__} = $prevdie; |
2719 | print $OUT "Default die handler restored.\n"; |
2720 | } |
2721 | } |
2722 | $dieLevel; |
2723 | } |
2724 | |
2725 | sub signalLevel { |
2726 | if (@_) { |
2727 | $prevsegv = $SIG{SEGV} unless $signalLevel; |
2728 | $prevbus = $SIG{BUS} unless $signalLevel; |
2729 | $signalLevel = shift; |
2730 | if ($signalLevel) { |
77fb7b16 |
2731 | $SIG{SEGV} = \&DB::diesignal; |
2732 | $SIG{BUS} = \&DB::diesignal; |
d338d6fe |
2733 | } else { |
2734 | $SIG{SEGV} = $prevsegv; |
2735 | $SIG{BUS} = $prevbus; |
2736 | } |
2737 | } |
2738 | $signalLevel; |
2739 | } |
2740 | |
83ee9e09 |
2741 | sub CvGV_name { |
2742 | my $in = shift; |
2743 | my $name = CvGV_name_or_bust($in); |
2744 | defined $name ? $name : $in; |
2745 | } |
2746 | |
2747 | sub CvGV_name_or_bust { |
2748 | my $in = shift; |
2749 | return if $skipCvGV; # Backdoor to avoid problems if XS broken... |
2526eab8 |
2750 | return unless ref $in; |
83ee9e09 |
2751 | $in = \&$in; # Hard reference... |
2752 | eval {require Devel::Peek; 1} or return; |
2753 | my $gv = Devel::Peek::CvGV($in) or return; |
2754 | *$gv{PACKAGE} . '::' . *$gv{NAME}; |
2755 | } |
2756 | |
1d06cb2d |
2757 | sub find_sub { |
2758 | my $subr = shift; |
1d06cb2d |
2759 | $sub{$subr} or do { |
83ee9e09 |
2760 | return unless defined &$subr; |
2761 | my $name = CvGV_name_or_bust($subr); |
2762 | my $data; |
2763 | $data = $sub{$name} if defined $name; |
2764 | return $data if defined $data; |
2765 | |
2766 | # Old stupid way... |
1d06cb2d |
2767 | $subr = \&$subr; # Hard reference |
2768 | my $s; |
2769 | for (keys %sub) { |
2770 | $s = $_, last if $subr eq \&$_; |
2771 | } |
2772 | $sub{$s} if $s; |
2773 | } |
2774 | } |
2775 | |
2776 | sub methods { |
2777 | my $class = shift; |
2778 | $class = ref $class if ref $class; |
2779 | local %seen; |
2780 | local %packs; |
2781 | methods_via($class, '', 1); |
2782 | methods_via('UNIVERSAL', 'UNIVERSAL', 0); |
2783 | } |
2784 | |
2785 | sub methods_via { |
2786 | my $class = shift; |
2787 | return if $packs{$class}++; |
2788 | my $prefix = shift; |
2789 | my $prepend = $prefix ? "via $prefix: " : ''; |
2790 | my $name; |
055fd3a9 |
2791 | for $name (grep {defined &{${"${class}::"}{$_}}} |
2792 | sort keys %{"${class}::"}) { |
477ea2b1 |
2793 | next if $seen{ $name }++; |
1d06cb2d |
2794 | print $DB::OUT "$prepend$name\n"; |
2795 | } |
2796 | return unless shift; # Recurse? |
055fd3a9 |
2797 | for $name (@{"${class}::ISA"}) { |
1d06cb2d |
2798 | $prepend = $prefix ? $prefix . " -> $name" : $name; |
2799 | methods_via($name, $prepend, 1); |
2800 | } |
2801 | } |
2802 | |
055fd3a9 |
2803 | sub setman { |
2804 | $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS)\z/s |
2805 | ? "man" # O Happy Day! |
2806 | : "perldoc"; # Alas, poor unfortunates |
2807 | } |
2808 | |
2809 | sub runman { |
2810 | my $page = shift; |
2811 | unless ($page) { |
2812 | &system("$doccmd $doccmd"); |
2813 | return; |
2814 | } |
2815 | # this way user can override, like with $doccmd="man -Mwhatever" |
2816 | # or even just "man " to disable the path check. |
2817 | unless ($doccmd eq 'man') { |
2818 | &system("$doccmd $page"); |
2819 | return; |
2820 | } |
2821 | |
2822 | $page = 'perl' if lc($page) eq 'help'; |
2823 | |
2824 | require Config; |
2825 | my $man1dir = $Config::Config{'man1dir'}; |
2826 | my $man3dir = $Config::Config{'man3dir'}; |
2827 | for ($man1dir, $man3dir) { s#/[^/]*\z## if /\S/ } |
2828 | my $manpath = ''; |
2829 | $manpath .= "$man1dir:" if $man1dir =~ /\S/; |
2830 | $manpath .= "$man3dir:" if $man3dir =~ /\S/ && $man1dir ne $man3dir; |
2831 | chop $manpath if $manpath; |
2832 | # harmless if missing, I figure |
2833 | my $oldpath = $ENV{MANPATH}; |
2834 | $ENV{MANPATH} = $manpath if $manpath; |
2835 | my $nopathopt = $^O =~ /dunno what goes here/; |
04e43a21 |
2836 | if (CORE::system($doccmd, |
055fd3a9 |
2837 | # I just *know* there are men without -M |
2838 | (($manpath && !$nopathopt) ? ("-M", $manpath) : ()), |
2839 | split ' ', $page) ) |
2840 | { |
2841 | unless ($page =~ /^perl\w/) { |
2842 | if (grep { $page eq $_ } qw{ |
2843 | 5004delta 5005delta amiga api apio book boot bot call compile |
2844 | cygwin data dbmfilter debug debguts delta diag doc dos dsc embed |
2845 | faq faq1 faq2 faq3 faq4 faq5 faq6 faq7 faq8 faq9 filter fork |
2846 | form func guts hack hist hpux intern ipc lexwarn locale lol mod |
2847 | modinstall modlib number obj op opentut os2 os390 pod port |
2848 | ref reftut run sec style sub syn thrtut tie toc todo toot tootc |
2849 | trap unicode var vms win32 xs xstut |
2850 | }) |
2851 | { |
2852 | $page =~ s/^/perl/; |
04e43a21 |
2853 | CORE::system($doccmd, |
055fd3a9 |
2854 | (($manpath && !$nopathopt) ? ("-M", $manpath) : ()), |
2855 | $page); |
2856 | } |
2857 | } |
2858 | } |
2859 | if (defined $oldpath) { |
2860 | $ENV{MANPATH} = $manpath; |
2861 | } else { |
2862 | delete $ENV{MANPATH}; |
2863 | } |
2864 | } |
2865 | |
d338d6fe |
2866 | # The following BEGIN is very handy if debugger goes havoc, debugging debugger? |
2867 | |
2868 | BEGIN { # This does not compile, alas. |
2869 | $IN = \*STDIN; # For bugs before DB::OUT has been opened |
2870 | $OUT = \*STDERR; # For errors before DB::OUT has been opened |
2871 | $sh = '!'; |
2872 | $rc = ','; |
2873 | @hist = ('?'); |
2874 | $deep = 100; # warning if stack gets this deep |
2875 | $window = 10; |
2876 | $preview = 3; |
2877 | $sub = ''; |
77fb7b16 |
2878 | $SIG{INT} = \&DB::catch; |
ee971a18 |
2879 | # This may be enabled to debug debugger: |
2880 | #$warnLevel = 1 unless defined $warnLevel; |
2881 | #$dieLevel = 1 unless defined $dieLevel; |
2882 | #$signalLevel = 1 unless defined $signalLevel; |
d338d6fe |
2883 | |
2884 | $db_stop = 0; # Compiler warning |
2885 | $db_stop = 1 << 30; |
2886 | $level = 0; # Level of recursive debugging |
55497cff |
2887 | # @stack and $doret are needed in sub sub, which is called for DB::postponed. |
2888 | # Triggers bug (?) in perl is we postpone this until runtime: |
2889 | @postponed = @stack = (0); |
f8b5b99c |
2890 | $stack_depth = 0; # Localized $#stack |
55497cff |
2891 | $doret = -2; |
2892 | $frame = 0; |
d338d6fe |
2893 | } |
2894 | |
54d04a52 |
2895 | BEGIN {$^W = $ini_warn;} # Switch warnings back |
2896 | |
04e43a21 |
2897 | #use Carp; # This did break, left for debugging |
d338d6fe |
2898 | |
55497cff |
2899 | sub db_complete { |
08a4aec0 |
2900 | # Specific code for b c l V m f O, &blah, $blah, @blah, %blah |
55497cff |
2901 | my($text, $line, $start) = @_; |
477ea2b1 |
2902 | my ($itext, $search, $prefix, $pack) = |
055fd3a9 |
2903 | ($text, "^\Q${'package'}::\E([^:]+)\$"); |
55497cff |
2904 | |
08a4aec0 |
2905 | return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines |
2906 | (map { /$search/ ? ($1) : () } keys %sub) |
2907 | if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/; |
2908 | return sort grep /^\Q$text/, values %INC # files |
477ea2b1 |
2909 | if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/; |
08a4aec0 |
2910 | return sort map {($_, db_complete($_ . "::", "V ", 2))} |
2911 | grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages |
2912 | if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/; |
2913 | return sort map {($_, db_complete($_ . "::", "V ", 2))} |
2914 | grep !/^main::/, |
2915 | grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'} |
2916 | # packages |
2917 | if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ |
2918 | and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1; |
477ea2b1 |
2919 | if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files |
2920 | # We may want to complete to (eval 9), so $text may be wrong |
2921 | $prefix = length($1) - length($text); |
2922 | $text = $1; |
08a4aec0 |
2923 | return sort |
2924 | map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0 |
477ea2b1 |
2925 | } |
55497cff |
2926 | if ((substr $text, 0, 1) eq '&') { # subroutines |
2927 | $text = substr $text, 1; |
2928 | $prefix = "&"; |
08a4aec0 |
2929 | return sort map "$prefix$_", |
2930 | grep /^\Q$text/, |
2931 | (keys %sub), |
2932 | (map { /$search/ ? ($1) : () } |
2933 | keys %sub); |
55497cff |
2934 | } |
2935 | if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package |
2936 | $pack = ($1 eq 'main' ? '' : $1) . '::'; |
2937 | $prefix = (substr $text, 0, 1) . $1 . '::'; |
2938 | $text = $2; |
2939 | my @out |
2940 | = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ; |
2941 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
2942 | return db_complete($out[0], $line, $start); |
2943 | } |
08a4aec0 |
2944 | return sort @out; |
55497cff |
2945 | } |
2946 | if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main) |
2947 | $pack = ($package eq 'main' ? '' : $package) . '::'; |
2948 | $prefix = substr $text, 0, 1; |
2949 | $text = substr $text, 1; |
2950 | my @out = map "$prefix$_", grep /^\Q$text/, |
2951 | (grep /^_?[a-zA-Z]/, keys %$pack), |
2952 | ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ; |
2953 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
2954 | return db_complete($out[0], $line, $start); |
2955 | } |
08a4aec0 |
2956 | return sort @out; |
55497cff |
2957 | } |
477ea2b1 |
2958 | if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space |
55497cff |
2959 | my @out = grep /^\Q$text/, @options; |
2960 | my $val = option_val($out[0], undef); |
2961 | my $out = '? '; |
2962 | if (not defined $val or $val =~ /[\n\r]/) { |
2963 | # Can do nothing better |
2964 | } elsif ($val =~ /\s/) { |
2965 | my $found; |
2966 | foreach $l (split //, qq/\"\'\#\|/) { |
2967 | $out = "$l$val$l ", last if (index $val, $l) == -1; |
2968 | } |
2969 | } else { |
2970 | $out = "=$val "; |
2971 | } |
2972 | # Default to value if one completion, to question if many |
a737e074 |
2973 | $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? '); |
08a4aec0 |
2974 | return sort @out; |
55497cff |
2975 | } |
a737e074 |
2976 | return $term->filename_list($text); # filenames |
55497cff |
2977 | } |
2978 | |
43aed9ee |
2979 | sub end_report { |
2980 | print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n" |
2981 | } |
4639966b |
2982 | |
55497cff |
2983 | END { |
20928eff |
2984 | $finished = 1 if $inhibit_exit; # So that some keys may be disabled. |
2985 | $fall_off_end = 1 unless $inhibit_exit; |
36477c24 |
2986 | # Do not stop in at_exit() and destructors on exit: |
20928eff |
2987 | $DB::single = !$fall_off_end && !$runnonstop; |
2988 | DB::fake::at_exit() unless $fall_off_end or $runnonstop; |
55497cff |
2989 | } |
2990 | |
2991 | package DB::fake; |
2992 | |
2993 | sub at_exit { |
43aed9ee |
2994 | "Debugged program terminated. Use `q' to quit or `R' to restart."; |
55497cff |
2995 | } |
2996 | |
36477c24 |
2997 | package DB; # Do not trace this 1; below! |
2998 | |
d338d6fe |
2999 | 1; |