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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 = 1.0403; |
43aed9ee |
6 | $header = "perl5db.pl version $VERSION"; |
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7 | |
8 | # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) |
9 | # Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl |
10 | |
11 | # modified Perl debugger, to be run from Emacs in perldb-mode |
12 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 |
13 | # Johan Vromans -- upgrade to 4.0 pl 10 |
14 | # Ilya Zakharevich -- patches after 5.001 (and some before ;-) |
15 | |
16 | # |
17 | # This file is automatically included if you do perl -d. |
18 | # It's probably not useful to include this yourself. |
19 | # |
36477c24 |
20 | # Perl supplies the values for %sub. It effectively inserts |
21 | # a &DB'DB(); in front of every place that can have a |
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22 | # breakpoint. Instead of a subroutine call it calls &DB::sub with |
23 | # $DB::sub being the called subroutine. It also inserts a BEGIN |
24 | # {require 'perl5db.pl'} before the first line. |
25 | # |
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26 | # After each `require'd file is compiled, but before it is executed, a |
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27 | # call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the |
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28 | # $filename is the expanded name of the `require'd file (as found as |
29 | # value of %INC). |
30 | # |
31 | # Additional services from Perl interpreter: |
32 | # |
33 | # if caller() is called from the package DB, it provides some |
34 | # additional data. |
35 | # |
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36 | # The array @{$main::{'_<'.$filename} is the line-by-line contents of |
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37 | # $filename. |
38 | # |
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39 | # The hash %{'_<'.$filename} contains breakpoints and action (it is |
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40 | # keyed by line number), and individual entries are settable (as |
41 | # opposed to the whole hash). Only true/false is important to the |
42 | # interpreter, though the values used by perl5db.pl have the form |
43 | # "$break_condition\0$action". Values are magical in numeric context. |
44 | # |
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45 | # The scalar ${'_<'.$filename} contains "_<$filename". |
55497cff |
46 | # |
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47 | # Note that no subroutine call is possible until &DB::sub is defined |
36477c24 |
48 | # (for subroutines defined outside of the package DB). In fact the same is |
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49 | # true if $deep is not defined. |
50 | # |
51 | # $Log: perldb.pl,v $ |
52 | |
53 | # |
54 | # At start reads $rcfile that may set important options. This file |
55 | # may define a subroutine &afterinit that will be executed after the |
56 | # debugger is initialized. |
57 | # |
58 | # After $rcfile is read reads environment variable PERLDB_OPTS and parses |
59 | # it as a rest of `O ...' line in debugger prompt. |
60 | # |
61 | # The options that can be specified only at startup: |
62 | # [To set in $rcfile, call &parse_options("optionName=new_value").] |
63 | # |
64 | # TTY - the TTY to use for debugging i/o. |
65 | # |
66 | # noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set |
67 | # uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using |
68 | # Term::Rendezvous. Current variant is to have the name of TTY in this |
69 | # file. |
70 | # |
71 | # ReadLine - If false, dummy ReadLine is used, so you can debug |
72 | # ReadLine applications. |
73 | # |
74 | # NonStop - if true, no i/o is performed until interrupt. |
75 | # |
76 | # LineInfo - file or pipe to print line number info to. If it is a |
77 | # pipe, a short "emacs like" message is used. |
78 | # |
79 | # Example $rcfile: (delete leading hashes!) |
80 | # |
81 | # &parse_options("NonStop=1 LineInfo=db.out"); |
82 | # sub afterinit { $trace = 1; } |
83 | # |
84 | # The script will run without human intervention, putting trace |
85 | # information into db.out. (If you interrupt it, you would better |
86 | # reset LineInfo to something "interactive"!) |
87 | # |
ee971a18 |
88 | ################################################################## |
89 | # Changelog: |
90 | |
91 | # A lot of things changed after 0.94. First of all, core now informs |
92 | # debugger about entry into XSUBs, overloaded operators, tied operations, |
93 | # BEGIN and END. Handy with `O f=2'. |
94 | |
95 | # This can make debugger a little bit too verbose, please be patient |
96 | # and report your problems promptly. |
97 | |
98 | # Now the option frame has 3 values: 0,1,2. |
99 | |
100 | # Note that if DESTROY returns a reference to the object (or object), |
101 | # the deletion of data may be postponed until the next function call, |
102 | # due to the need to examine the return value. |
103 | |
55497cff |
104 | # Changes: 0.95: `v' command shows versions. |
105 | # Changes: 0.96: `v' command shows version of readline. |
106 | # primitive completion works (dynamic variables, subs for `b' and `l', |
107 | # options). Can `p %var' |
108 | # Better help (`h <' now works). New commands <<, >>, {, {{. |
109 | # {dump|print}_trace() coded (to be able to do it from <<cmd). |
110 | # `c sub' documented. |
111 | # At last enough magic combined to stop after the end of debuggee. |
112 | # !! should work now (thanks to Emacs bracket matching an extra |
113 | # `]' in a regexp is caught). |
114 | # `L', `D' and `A' span files now (as documented). |
115 | # Breakpoints in `require'd code are possible (used in `R'). |
116 | # Some additional words on internal work of debugger. |
117 | # `b load filename' implemented. |
118 | # `b postpone subr' implemented. |
119 | # now only `q' exits debugger (overwriteable on $inhibit_exit). |
120 | # When restarting debugger breakpoints/actions persist. |
121 | # Buglet: When restarting debugger only one breakpoint/action per |
122 | # autoloaded function persists. |
36477c24 |
123 | # Changes: 0.97: NonStop will not stop in at_exit(). |
124 | # Option AutoTrace implemented. |
125 | # Trace printed differently if frames are printed too. |
1d06cb2d |
126 | # new `inhibitExit' option. |
127 | # printing of a very long statement interruptible. |
128 | # Changes: 0.98: New command `m' for printing possible methods |
129 | # 'l -' is a synonim for `-'. |
130 | # Cosmetic bugs in printing stack trace. |
131 | # `frame' & 8 to print "expanded args" in stack trace. |
132 | # Can list/break in imported subs. |
133 | # new `maxTraceLen' option. |
134 | # frame & 4 and frame & 8 granted. |
135 | # new command `m' |
136 | # nonstoppable lines do not have `:' near the line number. |
137 | # `b compile subname' implemented. |
138 | # Will not use $` any more. |
139 | # `-' behaves sane now. |
477ea2b1 |
140 | # Changes: 0.99: Completion for `f', `m'. |
141 | # `m' will remove duplicate names instead of duplicate functions. |
142 | # `b load' strips trailing whitespace. |
143 | # completion ignores leading `|'; takes into account current package |
144 | # when completing a subroutine name (same for `l'). |
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145 | |
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146 | #################################################################### |
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147 | |
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148 | # Needed for the statement after exec(): |
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149 | |
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150 | BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN. |
151 | local($^W) = 0; # Switch run-time warnings off during init. |
d338d6fe |
152 | warn ( # Do not ;-) |
153 | $dumpvar::hashDepth, |
154 | $dumpvar::arrayDepth, |
155 | $dumpvar::dumpDBFiles, |
156 | $dumpvar::dumpPackages, |
157 | $dumpvar::quoteHighBit, |
158 | $dumpvar::printUndef, |
159 | $dumpvar::globPrint, |
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160 | $dumpvar::usageOnly, |
161 | @ARGS, |
162 | $Carp::CarpLevel, |
54d04a52 |
163 | $panic, |
36477c24 |
164 | $second_time, |
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165 | ) if 0; |
166 | |
54d04a52 |
167 | # Command-line + PERLLIB: |
168 | @ini_INC = @INC; |
169 | |
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170 | # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! |
171 | |
172 | $trace = $signal = $single = 0; # Uninitialized warning suppression |
173 | # (local $^W cannot help - other packages!). |
55497cff |
174 | $inhibit_exit = $option{PrintRet} = 1; |
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175 | |
22fae026 |
176 | @options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused |
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177 | compactDump veryCompact quote HighBit undefPrint |
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178 | globPrint PrintRet UsageOnly frame AutoTrace |
1d06cb2d |
179 | TTY noTTY ReadLine NonStop LineInfo maxTraceLen |
7a2e2cd6 |
180 | recallCommand ShellBang pager tkRunning ornaments |
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181 | signalLevel warnLevel dieLevel inhibit_exit |
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182 | ImmediateStop bareStringify); |
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183 | |
184 | %optionVars = ( |
185 | hashDepth => \$dumpvar::hashDepth, |
186 | arrayDepth => \$dumpvar::arrayDepth, |
187 | DumpDBFiles => \$dumpvar::dumpDBFiles, |
188 | DumpPackages => \$dumpvar::dumpPackages, |
22fae026 |
189 | DumpReused => \$dumpvar::dumpReused, |
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190 | HighBit => \$dumpvar::quoteHighBit, |
191 | undefPrint => \$dumpvar::printUndef, |
192 | globPrint => \$dumpvar::globPrint, |
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193 | UsageOnly => \$dumpvar::usageOnly, |
ee239bfe |
194 | bareStringify => \$dumpvar::bareStringify, |
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195 | frame => \$frame, |
196 | AutoTrace => \$trace, |
197 | inhibit_exit => \$inhibit_exit, |
1d06cb2d |
198 | maxTraceLen => \$maxtrace, |
3aefca04 |
199 | ImmediateStop => \$ImmediateStop, |
d338d6fe |
200 | ); |
201 | |
202 | %optionAction = ( |
203 | compactDump => \&dumpvar::compactDump, |
204 | veryCompact => \&dumpvar::veryCompact, |
205 | quote => \&dumpvar::quote, |
206 | TTY => \&TTY, |
207 | noTTY => \&noTTY, |
208 | ReadLine => \&ReadLine, |
209 | NonStop => \&NonStop, |
210 | LineInfo => \&LineInfo, |
211 | recallCommand => \&recallCommand, |
212 | ShellBang => \&shellBang, |
213 | pager => \&pager, |
214 | signalLevel => \&signalLevel, |
215 | warnLevel => \&warnLevel, |
216 | dieLevel => \&dieLevel, |
a737e074 |
217 | tkRunning => \&tkRunning, |
7a2e2cd6 |
218 | ornaments => \&ornaments, |
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219 | ); |
220 | |
221 | %optionRequire = ( |
222 | compactDump => 'dumpvar.pl', |
223 | veryCompact => 'dumpvar.pl', |
224 | quote => 'dumpvar.pl', |
225 | ); |
226 | |
227 | # These guys may be defined in $ENV{PERL5DB} : |
228 | $rl = 1 unless defined $rl; |
ee971a18 |
229 | $warnLevel = 1 unless defined $warnLevel; |
230 | $dieLevel = 1 unless defined $dieLevel; |
231 | $signalLevel = 1 unless defined $signalLevel; |
55497cff |
232 | $pre = [] unless defined $pre; |
233 | $post = [] unless defined $post; |
234 | $pretype = [] unless defined $pretype; |
d338d6fe |
235 | warnLevel($warnLevel); |
236 | dieLevel($dieLevel); |
237 | signalLevel($signalLevel); |
65c9c81d |
238 | &pager((defined($ENV{PAGER}) |
239 | ? $ENV{PAGER} |
240 | : ($^O eq 'os2' |
241 | ? 'cmd /c more' |
242 | : 'more'))) unless defined $pager; |
d338d6fe |
243 | &recallCommand("!") unless defined $prc; |
244 | &shellBang("!") unless defined $psh; |
1d06cb2d |
245 | $maxtrace = 400 unless defined $maxtrace; |
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246 | |
247 | if (-e "/dev/tty") { |
248 | $rcfile=".perldb"; |
249 | } else { |
250 | $rcfile="perldb.ini"; |
251 | } |
252 | |
253 | if (-f $rcfile) { |
254 | do "./$rcfile"; |
255 | } elsif (defined $ENV{LOGDIR} and -f "$ENV{LOGDIR}/$rcfile") { |
256 | do "$ENV{LOGDIR}/$rcfile"; |
257 | } elsif (defined $ENV{HOME} and -f "$ENV{HOME}/$rcfile") { |
258 | do "$ENV{HOME}/$rcfile"; |
259 | } |
260 | |
261 | if (defined $ENV{PERLDB_OPTS}) { |
262 | parse_options($ENV{PERLDB_OPTS}); |
263 | } |
264 | |
54d04a52 |
265 | if (exists $ENV{PERLDB_RESTART}) { |
266 | delete $ENV{PERLDB_RESTART}; |
267 | # $restart = 1; |
268 | @hist = get_list('PERLDB_HIST'); |
55497cff |
269 | %break_on_load = get_list("PERLDB_ON_LOAD"); |
270 | %postponed = get_list("PERLDB_POSTPONE"); |
271 | my @had_breakpoints= get_list("PERLDB_VISITED"); |
272 | for (0 .. $#had_breakpoints) { |
0c395bd7 |
273 | my %pf = get_list("PERLDB_FILE_$_"); |
274 | $postponed_file{$had_breakpoints[$_]} = \%pf if %pf; |
54d04a52 |
275 | } |
276 | my %opt = get_list("PERLDB_OPT"); |
277 | my ($opt,$val); |
278 | while (($opt,$val) = each %opt) { |
279 | $val =~ s/[\\\']/\\$1/g; |
280 | parse_options("$opt'$val'"); |
281 | } |
282 | @INC = get_list("PERLDB_INC"); |
283 | @ini_INC = @INC; |
43aed9ee |
284 | $pretype = [get_list("PERLDB_PRETYPE")]; |
285 | $pre = [get_list("PERLDB_PRE")]; |
286 | $post = [get_list("PERLDB_POST")]; |
287 | @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead); |
54d04a52 |
288 | } |
289 | |
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290 | if ($notty) { |
291 | $runnonstop = 1; |
292 | } else { |
293 | # Is Perl being run from Emacs? |
294 | $emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); |
295 | $rl = 0, shift(@main::ARGV) if $emacs; |
296 | |
297 | #require Term::ReadLine; |
298 | |
8736538c |
299 | if ($^O =~ /cygwin/) { |
300 | # /dev/tty is binary. use stdin for textmode |
301 | undef $console; |
302 | } elsif (-e "/dev/tty") { |
d338d6fe |
303 | $console = "/dev/tty"; |
39e571d4 |
304 | } elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') { |
d338d6fe |
305 | $console = "con"; |
306 | } else { |
307 | $console = "sys\$command"; |
308 | } |
309 | |
96774cc9 |
310 | if (($^O eq 'MSWin32') and ($emacs or defined $ENV{EMACS})) { |
311 | $console = undef; |
312 | } |
313 | |
d338d6fe |
314 | # Around a bug: |
ee971a18 |
315 | if (defined $ENV{OS2_SHELL} and ($emacs or $ENV{WINDOWID})) { # In OS/2 |
d338d6fe |
316 | $console = undef; |
317 | } |
318 | |
4d2c4e07 |
319 | if ($^O eq 'epoc') { |
320 | $console = undef; |
321 | } |
322 | |
d338d6fe |
323 | $console = $tty if defined $tty; |
324 | |
325 | if (defined $console) { |
326 | open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN"); |
327 | open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR") |
328 | || open(OUT,">&STDOUT"); # so we don't dongle stdout |
329 | } else { |
330 | open(IN,"<&STDIN"); |
331 | open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout |
332 | $console = 'STDIN/OUT'; |
333 | } |
334 | # so open("|more") can read from STDOUT and so we don't dingle stdin |
335 | $IN = \*IN; |
336 | |
337 | $OUT = \*OUT; |
338 | select($OUT); |
339 | $| = 1; # for DB::OUT |
340 | select(STDOUT); |
341 | |
342 | $LINEINFO = $OUT unless defined $LINEINFO; |
343 | $lineinfo = $console unless defined $lineinfo; |
344 | |
345 | $| = 1; # for real STDOUT |
346 | |
347 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
348 | unless ($runnonstop) { |
349 | print $OUT "\nLoading DB routines from $header\n"; |
350 | print $OUT ("Emacs support ", |
351 | $emacs ? "enabled" : "available", |
352 | ".\n"); |
d9f67849 |
353 | print $OUT "\nEnter h or `h h' for help, run `perldoc perldebug' for more help.\n\n"; |
d338d6fe |
354 | } |
355 | } |
356 | |
357 | @ARGS = @ARGV; |
358 | for (@args) { |
359 | s/\'/\\\'/g; |
360 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
361 | } |
362 | |
363 | if (defined &afterinit) { # May be defined in $rcfile |
364 | &afterinit(); |
365 | } |
366 | |
43aed9ee |
367 | $I_m_init = 1; |
368 | |
d338d6fe |
369 | ############################################################ Subroutines |
370 | |
d338d6fe |
371 | sub DB { |
36477c24 |
372 | # _After_ the perl program is compiled, $single is set to 1: |
373 | if ($single and not $second_time++) { |
374 | if ($runnonstop) { # Disable until signal |
f8b5b99c |
375 | for ($i=0; $i <= $stack_depth; ) { |
d338d6fe |
376 | $stack[$i++] &= ~1; |
377 | } |
54d04a52 |
378 | $single = 0; |
36477c24 |
379 | # return; # Would not print trace! |
3aefca04 |
380 | } elsif ($ImmediateStop) { |
381 | $ImmediateStop = 0; |
382 | $signal = 1; |
54d04a52 |
383 | } |
d338d6fe |
384 | } |
36477c24 |
385 | $runnonstop = 0 if $single or $signal; # Disable it if interactive. |
d338d6fe |
386 | &save; |
d338d6fe |
387 | ($package, $filename, $line) = caller; |
54d04a52 |
388 | $filename_ini = $filename; |
22fae026 |
389 | $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . |
d338d6fe |
390 | "package $package;"; # this won't let them modify, alas |
8ebc5c01 |
391 | local(*dbline) = $main::{'_<' . $filename}; |
d338d6fe |
392 | $max = $#dbline; |
393 | if (($stop,$action) = split(/\0/,$dbline{$line})) { |
394 | if ($stop eq '1') { |
395 | $signal |= 1; |
54d04a52 |
396 | } elsif ($stop) { |
3f521411 |
397 | $evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval; |
d338d6fe |
398 | $dbline{$line} =~ s/;9($|\0)/$1/; |
399 | } |
400 | } |
36477c24 |
401 | my $was_signal = $signal; |
6027b9a3 |
402 | if ($trace & 2) { |
403 | for (my $n = 0; $n <= $#to_watch; $n++) { |
404 | $evalarg = $to_watch[$n]; |
ed0d1bf7 |
405 | local $onetimeDump; # Do not output results |
6027b9a3 |
406 | my ($val) = &eval; # Fix context (&eval is doing array)? |
407 | $val = ( (defined $val) ? "'$val'" : 'undef' ); |
408 | if ($val ne $old_watch[$n]) { |
409 | $signal = 1; |
410 | print $OUT <<EOP; |
405ff068 |
411 | Watchpoint $n:\t$to_watch[$n] changed: |
412 | old value:\t$old_watch[$n] |
413 | new value:\t$val |
6027b9a3 |
414 | EOP |
415 | $old_watch[$n] = $val; |
416 | } |
417 | } |
418 | } |
419 | if ($trace & 4) { # User-installed watch |
420 | return if watchfunction($package, $filename, $line) |
421 | and not $single and not $was_signal and not ($trace & ~4); |
422 | } |
423 | $was_signal = $signal; |
36477c24 |
424 | $signal = 0; |
6027b9a3 |
425 | if ($single || ($trace & 1) || $was_signal) { |
d338d6fe |
426 | if ($emacs) { |
54d04a52 |
427 | $position = "\032\032$filename:$line:0\n"; |
428 | print $LINEINFO $position; |
405ff068 |
429 | } elsif ($package eq 'DB::fake') { |
65c9c81d |
430 | $term || &setterm; |
405ff068 |
431 | print_help(<<EOP); |
432 | Debugged program terminated. Use B<q> to quit or B<R> to restart, |
433 | use B<O> I<inhibit_exit> to avoid stopping after program termination, |
434 | B<h q>, B<h R> or B<h O> to get additional info. |
435 | EOP |
436 | $package = 'main'; |
437 | $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . |
438 | "package $package;"; # this won't let them modify, alas |
d338d6fe |
439 | } else { |
440 | $sub =~ s/\'/::/; |
441 | $prefix = $sub =~ /::/ ? "" : "${'package'}::"; |
442 | $prefix .= "$sub($filename:"; |
443 | $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); |
444 | if (length($prefix) > 30) { |
54d04a52 |
445 | $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; |
d338d6fe |
446 | $prefix = ""; |
447 | $infix = ":\t"; |
448 | } else { |
449 | $infix = "):\t"; |
54d04a52 |
450 | $position = "$prefix$line$infix$dbline[$line]$after"; |
36477c24 |
451 | } |
452 | if ($frame) { |
f8b5b99c |
453 | print $LINEINFO ' ' x $stack_depth, "$line:\t$dbline[$line]$after"; |
36477c24 |
454 | } else { |
54d04a52 |
455 | print $LINEINFO $position; |
d338d6fe |
456 | } |
457 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi |
458 | last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; |
36477c24 |
459 | last if $signal; |
d338d6fe |
460 | $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); |
54d04a52 |
461 | $incr_pos = "$prefix$i$infix$dbline[$i]$after"; |
54d04a52 |
462 | $position .= $incr_pos; |
36477c24 |
463 | if ($frame) { |
f8b5b99c |
464 | print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after"; |
36477c24 |
465 | } else { |
466 | print $LINEINFO $incr_pos; |
467 | } |
d338d6fe |
468 | } |
469 | } |
470 | } |
471 | $evalarg = $action, &eval if $action; |
36477c24 |
472 | if ($single || $was_signal) { |
d338d6fe |
473 | local $level = $level + 1; |
e63173ce |
474 | foreach $evalarg (@$pre) { |
475 | &eval; |
476 | } |
f8b5b99c |
477 | print $OUT $stack_depth . " levels deep in subroutine calls!\n" |
d338d6fe |
478 | if $single & 4; |
479 | $start = $line; |
1d06cb2d |
480 | $incr = -1; # for backward motion. |
6657d1ba |
481 | @typeahead = (@$pretype, @typeahead); |
d338d6fe |
482 | CMD: |
483 | while (($term || &setterm), |
f36776d9 |
484 | ($term_pid == $$ or &resetterm), |
54d04a52 |
485 | defined ($cmd=&readline(" DB" . ('<' x $level) . |
486 | ($#hist+1) . ('>' x $level) . |
487 | " "))) { |
d338d6fe |
488 | $single = 0; |
489 | $signal = 0; |
490 | $cmd =~ s/\\$/\n/ && do { |
54d04a52 |
491 | $cmd .= &readline(" cont: "); |
d338d6fe |
492 | redo CMD; |
493 | }; |
d338d6fe |
494 | $cmd =~ /^$/ && ($cmd = $laststep); |
495 | push(@hist,$cmd) if length($cmd) > 1; |
496 | PIPE: { |
497 | ($i) = split(/\s+/,$cmd); |
498 | eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i}; |
477ea2b1 |
499 | $cmd =~ /^q$/ && ($exiting = 1) && exit 0; |
d338d6fe |
500 | $cmd =~ /^h$/ && do { |
6027b9a3 |
501 | print_help($help); |
d338d6fe |
502 | next CMD; }; |
503 | $cmd =~ /^h\s+h$/ && do { |
6027b9a3 |
504 | print_help($summary); |
d338d6fe |
505 | next CMD; }; |
506 | $cmd =~ /^h\s+(\S)$/ && do { |
507 | my $asked = "\Q$1"; |
6027b9a3 |
508 | if ($help =~ /^(?:[IB]<)$asked/m) { |
509 | while ($help =~ /^((?:[IB]<)$asked([\s\S]*?)\n)(?!\s)/mg) { |
510 | print_help($1); |
55497cff |
511 | } |
d338d6fe |
512 | } else { |
6027b9a3 |
513 | print_help("B<$asked> is not a debugger command.\n"); |
d338d6fe |
514 | } |
515 | next CMD; }; |
516 | $cmd =~ /^t$/ && do { |
6027b9a3 |
517 | ($trace & 1) ? ($trace &= ~1) : ($trace |= 1); |
518 | print $OUT "Trace = " . |
519 | (($trace & 1) ? "on" : "off" ) . "\n"; |
d338d6fe |
520 | next CMD; }; |
521 | $cmd =~ /^S(\s+(!)?(.+))?$/ && do { |
522 | $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; |
523 | foreach $subname (sort(keys %sub)) { |
524 | if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { |
525 | print $OUT $subname,"\n"; |
526 | } |
527 | } |
528 | next CMD; }; |
ee971a18 |
529 | $cmd =~ /^v$/ && do { |
530 | list_versions(); next CMD}; |
d338d6fe |
531 | $cmd =~ s/^X\b/V $package/; |
532 | $cmd =~ /^V$/ && do { |
533 | $cmd = "V $package"; }; |
534 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { |
535 | local ($savout) = select($OUT); |
536 | $packname = $1; |
537 | @vars = split(' ',$2); |
538 | do 'dumpvar.pl' unless defined &main::dumpvar; |
539 | if (defined &main::dumpvar) { |
54d04a52 |
540 | local $frame = 0; |
ee971a18 |
541 | local $doret = -2; |
d338d6fe |
542 | &main::dumpvar($packname,@vars); |
543 | } else { |
544 | print $OUT "dumpvar.pl not available.\n"; |
545 | } |
546 | select ($savout); |
547 | next CMD; }; |
548 | $cmd =~ s/^x\b/ / && do { # So that will be evaled |
1d06cb2d |
549 | $onetimeDump = 'dump'; }; |
550 | $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do { |
551 | methods($1); next CMD}; |
552 | $cmd =~ s/^m\b/ / && do { # So this will be evaled |
553 | $onetimeDump = 'methods'; }; |
d338d6fe |
554 | $cmd =~ /^f\b\s*(.*)/ && do { |
555 | $file = $1; |
477ea2b1 |
556 | $file =~ s/\s+$//; |
d338d6fe |
557 | if (!$file) { |
558 | print $OUT "The old f command is now the r command.\n"; |
559 | print $OUT "The new f command switches filenames.\n"; |
560 | next CMD; |
561 | } |
562 | if (!defined $main::{'_<' . $file}) { |
563 | if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ |
477ea2b1 |
564 | $try = substr($try,2); |
565 | print $OUT "Choosing $try matching `$file':\n"; |
566 | $file = $try; |
d338d6fe |
567 | }} |
568 | } |
569 | if (!defined $main::{'_<' . $file}) { |
04fb8f4b |
570 | print $OUT "No file matching `$file' is loaded.\n"; |
d338d6fe |
571 | next CMD; |
572 | } elsif ($file ne $filename) { |
8ebc5c01 |
573 | *dbline = $main::{'_<' . $file}; |
d338d6fe |
574 | $max = $#dbline; |
575 | $filename = $file; |
576 | $start = 1; |
577 | $cmd = "l"; |
477ea2b1 |
578 | } else { |
579 | print $OUT "Already in $file.\n"; |
580 | next CMD; |
581 | } |
582 | }; |
1d06cb2d |
583 | $cmd =~ s/^l\s+-\s*$/-/; |
d338d6fe |
584 | $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do { |
585 | $subname = $1; |
586 | $subname =~ s/\'/::/; |
477ea2b1 |
587 | $subname = $package."::".$subname |
588 | unless $subname =~ /::/; |
d338d6fe |
589 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
1d06cb2d |
590 | @pieces = split(/:/,find_sub($subname)); |
d338d6fe |
591 | $subrange = pop @pieces; |
592 | $file = join(':', @pieces); |
593 | if ($file ne $filename) { |
8ebc5c01 |
594 | *dbline = $main::{'_<' . $file}; |
d338d6fe |
595 | $max = $#dbline; |
596 | $filename = $file; |
597 | } |
598 | if ($subrange) { |
599 | if (eval($subrange) < -$window) { |
600 | $subrange =~ s/-.*/+/; |
601 | } |
602 | $cmd = "l $subrange"; |
603 | } else { |
604 | print $OUT "Subroutine $subname not found.\n"; |
605 | next CMD; |
606 | } }; |
54d04a52 |
607 | $cmd =~ /^\.$/ && do { |
1d06cb2d |
608 | $incr = -1; # for backward motion. |
54d04a52 |
609 | $start = $line; |
610 | $filename = $filename_ini; |
8ebc5c01 |
611 | *dbline = $main::{'_<' . $filename}; |
54d04a52 |
612 | $max = $#dbline; |
613 | print $LINEINFO $position; |
614 | next CMD }; |
d338d6fe |
615 | $cmd =~ /^w\b\s*(\d*)$/ && do { |
616 | $incr = $window - 1; |
617 | $start = $1 if $1; |
618 | $start -= $preview; |
54d04a52 |
619 | #print $OUT 'l ' . $start . '-' . ($start + $incr); |
d338d6fe |
620 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
621 | $cmd =~ /^-$/ && do { |
1d06cb2d |
622 | $start -= $incr + $window + 1; |
623 | $start = 1 if $start <= 0; |
d338d6fe |
624 | $incr = $window - 1; |
1d06cb2d |
625 | $cmd = 'l ' . ($start) . '+'; }; |
d338d6fe |
626 | $cmd =~ /^l$/ && do { |
627 | $incr = $window - 1; |
628 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
629 | $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { |
630 | $start = $1 if $1; |
631 | $incr = $2; |
632 | $incr = $window - 1 unless $incr; |
633 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
54d04a52 |
634 | $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
635 | $end = (!defined $2) ? $max : ($4 ? $4 : $2); |
d338d6fe |
636 | $end = $max if $end > $max; |
637 | $i = $2; |
638 | $i = $line if $i eq '.'; |
639 | $i = 1 if $i < 1; |
1d06cb2d |
640 | $incr = $end - $i; |
d338d6fe |
641 | if ($emacs) { |
642 | print $OUT "\032\032$filename:$i:0\n"; |
643 | $i = $end; |
644 | } else { |
645 | for (; $i <= $end; $i++) { |
54d04a52 |
646 | ($stop,$action) = split(/\0/, $dbline{$i}); |
647 | $arrow = ($i==$line |
648 | and $filename eq $filename_ini) |
649 | ? '==>' |
36477c24 |
650 | : ($dbline[$i]+0 ? ':' : ' ') ; |
54d04a52 |
651 | $arrow .= 'b' if $stop; |
652 | $arrow .= 'a' if $action; |
653 | print $OUT "$i$arrow\t", $dbline[$i]; |
65c9c81d |
654 | $i++, last if $signal; |
d338d6fe |
655 | } |
65c9c81d |
656 | print $OUT "\n" unless $dbline[$i-1] =~ /\n$/; |
d338d6fe |
657 | } |
658 | $start = $i; # remember in case they want more |
659 | $start = $max if $start > $max; |
660 | next CMD; }; |
661 | $cmd =~ /^D$/ && do { |
55497cff |
662 | print $OUT "Deleting all breakpoints...\n"; |
663 | my $file; |
664 | for $file (keys %had_breakpoints) { |
8ebc5c01 |
665 | local *dbline = $main::{'_<' . $file}; |
55497cff |
666 | my $max = $#dbline; |
667 | my $was; |
668 | |
d338d6fe |
669 | for ($i = 1; $i <= $max ; $i++) { |
670 | if (defined $dbline{$i}) { |
671 | $dbline{$i} =~ s/^[^\0]+//; |
672 | if ($dbline{$i} =~ s/^\0?$//) { |
673 | delete $dbline{$i}; |
674 | } |
675 | } |
676 | } |
55497cff |
677 | } |
678 | undef %postponed; |
679 | undef %postponed_file; |
680 | undef %break_on_load; |
681 | undef %had_breakpoints; |
682 | next CMD; }; |
d338d6fe |
683 | $cmd =~ /^L$/ && do { |
55497cff |
684 | my $file; |
685 | for $file (keys %had_breakpoints) { |
8ebc5c01 |
686 | local *dbline = $main::{'_<' . $file}; |
55497cff |
687 | my $max = $#dbline; |
688 | my $was; |
689 | |
d338d6fe |
690 | for ($i = 1; $i <= $max; $i++) { |
691 | if (defined $dbline{$i}) { |
2002527a |
692 | print $OUT "$file:\n" unless $was++; |
55497cff |
693 | print $OUT " $i:\t", $dbline[$i]; |
d338d6fe |
694 | ($stop,$action) = split(/\0/, $dbline{$i}); |
55497cff |
695 | print $OUT " break if (", $stop, ")\n" |
d338d6fe |
696 | if $stop; |
55497cff |
697 | print $OUT " action: ", $action, "\n" |
d338d6fe |
698 | if $action; |
699 | last if $signal; |
700 | } |
701 | } |
55497cff |
702 | } |
703 | if (%postponed) { |
704 | print $OUT "Postponed breakpoints in subroutines:\n"; |
705 | my $subname; |
706 | for $subname (keys %postponed) { |
707 | print $OUT " $subname\t$postponed{$subname}\n"; |
708 | last if $signal; |
709 | } |
710 | } |
711 | my @have = map { # Combined keys |
712 | keys %{$postponed_file{$_}} |
713 | } keys %postponed_file; |
714 | if (@have) { |
715 | print $OUT "Postponed breakpoints in files:\n"; |
716 | my ($file, $line); |
717 | for $file (keys %postponed_file) { |
0c395bd7 |
718 | my $db = $postponed_file{$file}; |
55497cff |
719 | print $OUT " $file:\n"; |
0c395bd7 |
720 | for $line (sort {$a <=> $b} keys %$db) { |
08a4aec0 |
721 | print $OUT " $line:\n"; |
0c395bd7 |
722 | my ($stop,$action) = split(/\0/, $$db{$line}); |
55497cff |
723 | print $OUT " break if (", $stop, ")\n" |
724 | if $stop; |
725 | print $OUT " action: ", $action, "\n" |
726 | if $action; |
727 | last if $signal; |
728 | } |
729 | last if $signal; |
730 | } |
731 | } |
732 | if (%break_on_load) { |
733 | print $OUT "Breakpoints on load:\n"; |
734 | my $file; |
735 | for $file (keys %break_on_load) { |
736 | print $OUT " $file\n"; |
737 | last if $signal; |
738 | } |
739 | } |
6027b9a3 |
740 | if ($trace & 2) { |
741 | print $OUT "Watch-expressions:\n"; |
742 | my $expr; |
743 | for $expr (@to_watch) { |
744 | print $OUT " $expr\n"; |
745 | last if $signal; |
746 | } |
747 | } |
55497cff |
748 | next CMD; }; |
749 | $cmd =~ /^b\b\s*load\b\s*(.*)/ && do { |
477ea2b1 |
750 | my $file = $1; $file =~ s/\s+$//; |
55497cff |
751 | { |
752 | $break_on_load{$file} = 1; |
753 | $break_on_load{$::INC{$file}} = 1 if $::INC{$file}; |
754 | $file .= '.pm', redo unless $file =~ /\./; |
755 | } |
756 | $had_breakpoints{$file} = 1; |
757 | print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n"; |
758 | next CMD; }; |
1d06cb2d |
759 | $cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
760 | my $cond = $3 || '1'; |
761 | my ($subname, $break) = ($2, $1 eq 'postpone'); |
55497cff |
762 | $subname =~ s/\'/::/; |
763 | $subname = "${'package'}::" . $subname |
764 | unless $subname =~ /::/; |
765 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
1d06cb2d |
766 | $postponed{$subname} = $break |
767 | ? "break +0 if $cond" : "compile"; |
d338d6fe |
768 | next CMD; }; |
769 | $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
770 | $subname = $1; |
771 | $cond = $2 || '1'; |
772 | $subname =~ s/\'/::/; |
773 | $subname = "${'package'}::" . $subname |
774 | unless $subname =~ /::/; |
775 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
776 | # Filename below can contain ':' |
1d06cb2d |
777 | ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/); |
d338d6fe |
778 | $i += 0; |
779 | if ($i) { |
780 | $filename = $file; |
8ebc5c01 |
781 | *dbline = $main::{'_<' . $filename}; |
55497cff |
782 | $had_breakpoints{$filename} = 1; |
d338d6fe |
783 | $max = $#dbline; |
784 | ++$i while $dbline[$i] == 0 && $i < $max; |
785 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
786 | } else { |
787 | print $OUT "Subroutine $subname not found.\n"; |
788 | } |
789 | next CMD; }; |
790 | $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { |
791 | $i = ($1?$1:$line); |
792 | $cond = $2 || '1'; |
793 | if ($dbline[$i] == 0) { |
794 | print $OUT "Line $i not breakable.\n"; |
795 | } else { |
55497cff |
796 | $had_breakpoints{$filename} = 1; |
d338d6fe |
797 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
798 | } |
799 | next CMD; }; |
800 | $cmd =~ /^d\b\s*(\d+)?/ && do { |
801 | $i = ($1?$1:$line); |
802 | $dbline{$i} =~ s/^[^\0]*//; |
803 | delete $dbline{$i} if $dbline{$i} eq ''; |
804 | next CMD; }; |
805 | $cmd =~ /^A$/ && do { |
55497cff |
806 | my $file; |
807 | for $file (keys %had_breakpoints) { |
8ebc5c01 |
808 | local *dbline = $main::{'_<' . $file}; |
55497cff |
809 | my $max = $#dbline; |
810 | my $was; |
811 | |
d338d6fe |
812 | for ($i = 1; $i <= $max ; $i++) { |
813 | if (defined $dbline{$i}) { |
814 | $dbline{$i} =~ s/\0[^\0]*//; |
815 | delete $dbline{$i} if $dbline{$i} eq ''; |
816 | } |
817 | } |
55497cff |
818 | } |
819 | next CMD; }; |
d338d6fe |
820 | $cmd =~ /^O\s*$/ && do { |
821 | for (@options) { |
822 | &dump_option($_); |
823 | } |
824 | next CMD; }; |
825 | $cmd =~ /^O\s*(\S.*)/ && do { |
826 | parse_options($1); |
827 | next CMD; }; |
55497cff |
828 | $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE |
829 | push @$pre, action($1); |
830 | next CMD; }; |
831 | $cmd =~ /^>>\s*(.*)/ && do { |
832 | push @$post, action($1); |
833 | next CMD; }; |
d338d6fe |
834 | $cmd =~ /^<\s*(.*)/ && do { |
55497cff |
835 | $pre = [], next CMD unless $1; |
836 | $pre = [action($1)]; |
d338d6fe |
837 | next CMD; }; |
838 | $cmd =~ /^>\s*(.*)/ && do { |
55497cff |
839 | $post = [], next CMD unless $1; |
840 | $post = [action($1)]; |
841 | next CMD; }; |
842 | $cmd =~ /^\{\{\s*(.*)/ && do { |
843 | push @$pretype, $1; |
844 | next CMD; }; |
845 | $cmd =~ /^\{\s*(.*)/ && do { |
846 | $pretype = [], next CMD unless $1; |
847 | $pretype = [$1]; |
d338d6fe |
848 | next CMD; }; |
849 | $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do { |
850 | $i = $1; $j = $3; |
851 | if ($dbline[$i] == 0) { |
852 | print $OUT "Line $i may not have an action.\n"; |
853 | } else { |
854 | $dbline{$i} =~ s/\0[^\0]*//; |
855 | $dbline{$i} .= "\0" . action($j); |
856 | } |
857 | next CMD; }; |
858 | $cmd =~ /^n$/ && do { |
4639966b |
859 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
860 | $single = 2; |
861 | $laststep = $cmd; |
862 | last CMD; }; |
863 | $cmd =~ /^s$/ && do { |
4639966b |
864 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
865 | $single = 1; |
866 | $laststep = $cmd; |
867 | last CMD; }; |
54d04a52 |
868 | $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { |
4639966b |
869 | end_report(), next CMD if $finished and $level <= 1; |
fb73857a |
870 | $subname = $i = $1; |
54d04a52 |
871 | if ($i =~ /\D/) { # subroutine name |
fb73857a |
872 | $subname = $package."::".$subname |
873 | unless $subname =~ /::/; |
874 | ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/); |
54d04a52 |
875 | $i += 0; |
876 | if ($i) { |
877 | $filename = $file; |
8ebc5c01 |
878 | *dbline = $main::{'_<' . $filename}; |
55497cff |
879 | $had_breakpoints{$filename}++; |
54d04a52 |
880 | $max = $#dbline; |
881 | ++$i while $dbline[$i] == 0 && $i < $max; |
882 | } else { |
883 | print $OUT "Subroutine $subname not found.\n"; |
884 | next CMD; |
885 | } |
886 | } |
d338d6fe |
887 | if ($i) { |
888 | if ($dbline[$i] == 0) { |
889 | print $OUT "Line $i not breakable.\n"; |
890 | next CMD; |
891 | } |
892 | $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. |
893 | } |
f8b5b99c |
894 | for ($i=0; $i <= $stack_depth; ) { |
d338d6fe |
895 | $stack[$i++] &= ~1; |
896 | } |
897 | last CMD; }; |
898 | $cmd =~ /^r$/ && do { |
4639966b |
899 | end_report(), next CMD if $finished and $level <= 1; |
f8b5b99c |
900 | $stack[$stack_depth] |= 1; |
901 | $doret = $option{PrintRet} ? $stack_depth - 1 : -2; |
d338d6fe |
902 | last CMD; }; |
54d04a52 |
903 | $cmd =~ /^R$/ && do { |
55497cff |
904 | print $OUT "Warning: some settings and command-line options may be lost!\n"; |
54d04a52 |
905 | my (@script, @flags, $cl); |
906 | push @flags, '-w' if $ini_warn; |
907 | # Put all the old includes at the start to get |
908 | # the same debugger. |
909 | for (@ini_INC) { |
910 | push @flags, '-I', $_; |
911 | } |
912 | # Arrange for setting the old INC: |
913 | set_list("PERLDB_INC", @ini_INC); |
914 | if ($0 eq '-e') { |
915 | for (1..$#{'::_<-e'}) { # The first line is PERL5DB |
916 | chomp ($cl = $ {'::_<-e'}[$_]); |
917 | push @script, '-e', $cl; |
918 | } |
919 | } else { |
920 | @script = $0; |
921 | } |
922 | set_list("PERLDB_HIST", |
923 | $term->Features->{getHistory} |
924 | ? $term->GetHistory : @hist); |
55497cff |
925 | my @had_breakpoints = keys %had_breakpoints; |
926 | set_list("PERLDB_VISITED", @had_breakpoints); |
54d04a52 |
927 | set_list("PERLDB_OPT", %option); |
55497cff |
928 | set_list("PERLDB_ON_LOAD", %break_on_load); |
929 | my @hard; |
930 | for (0 .. $#had_breakpoints) { |
931 | my $file = $had_breakpoints[$_]; |
8ebc5c01 |
932 | *dbline = $main::{'_<' . $file}; |
0c395bd7 |
933 | next unless %dbline or $postponed_file{$file}; |
55497cff |
934 | (push @hard, $file), next |
935 | if $file =~ /^\(eval \d+\)$/; |
936 | my @add; |
937 | @add = %{$postponed_file{$file}} |
0c395bd7 |
938 | if $postponed_file{$file}; |
55497cff |
939 | set_list("PERLDB_FILE_$_", %dbline, @add); |
940 | } |
941 | for (@hard) { # Yes, really-really... |
942 | # Find the subroutines in this eval |
8ebc5c01 |
943 | *dbline = $main::{'_<' . $_}; |
55497cff |
944 | my ($quoted, $sub, %subs, $line) = quotemeta $_; |
945 | for $sub (keys %sub) { |
946 | next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/; |
947 | $subs{$sub} = [$1, $2]; |
948 | } |
949 | unless (%subs) { |
950 | print $OUT |
951 | "No subroutines in $_, ignoring breakpoints.\n"; |
952 | next; |
953 | } |
954 | LINES: for $line (keys %dbline) { |
955 | # One breakpoint per sub only: |
956 | my ($offset, $sub, $found); |
957 | SUBS: for $sub (keys %subs) { |
958 | if ($subs{$sub}->[1] >= $line # Not after the subroutine |
959 | and (not defined $offset # Not caught |
960 | or $offset < 0 )) { # or badly caught |
961 | $found = $sub; |
962 | $offset = $line - $subs{$sub}->[0]; |
963 | $offset = "+$offset", last SUBS if $offset >= 0; |
964 | } |
965 | } |
966 | if (defined $offset) { |
967 | $postponed{$found} = |
968 | "break $offset if $dbline{$line}"; |
969 | } else { |
970 | print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n"; |
971 | } |
972 | } |
54d04a52 |
973 | } |
55497cff |
974 | set_list("PERLDB_POSTPONE", %postponed); |
43aed9ee |
975 | set_list("PERLDB_PRETYPE", @$pretype); |
976 | set_list("PERLDB_PRE", @$pre); |
977 | set_list("PERLDB_POST", @$post); |
978 | set_list("PERLDB_TYPEAHEAD", @typeahead); |
54d04a52 |
979 | $ENV{PERLDB_RESTART} = 1; |
980 | #print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS"; |
981 | exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS; |
982 | print $OUT "exec failed: $!\n"; |
983 | last CMD; }; |
d338d6fe |
984 | $cmd =~ /^T$/ && do { |
36477c24 |
985 | print_trace($OUT, 1); # skip DB |
d338d6fe |
986 | next CMD; }; |
6027b9a3 |
987 | $cmd =~ /^W\s*$/ && do { |
988 | $trace &= ~2; |
989 | @to_watch = @old_watch = (); |
990 | next CMD; }; |
991 | $cmd =~ /^W\b\s*(.*)/s && do { |
992 | push @to_watch, $1; |
993 | $evalarg = $1; |
994 | my ($val) = &eval; |
995 | $val = (defined $val) ? "'$val'" : 'undef' ; |
996 | push @old_watch, $val; |
997 | $trace |= 2; |
998 | next CMD; }; |
d338d6fe |
999 | $cmd =~ /^\/(.*)$/ && do { |
1000 | $inpat = $1; |
1001 | $inpat =~ s:([^\\])/$:$1:; |
1002 | if ($inpat ne "") { |
1003 | eval '$inpat =~ m'."\a$inpat\a"; |
1004 | if ($@ ne "") { |
1005 | print $OUT "$@"; |
1006 | next CMD; |
1007 | } |
1008 | $pat = $inpat; |
1009 | } |
1010 | $end = $start; |
1d06cb2d |
1011 | $incr = -1; |
d338d6fe |
1012 | eval ' |
1013 | for (;;) { |
1014 | ++$start; |
1015 | $start = 1 if ($start > $max); |
1016 | last if ($start == $end); |
1017 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
1018 | if ($emacs) { |
1019 | print $OUT "\032\032$filename:$start:0\n"; |
1020 | } else { |
1021 | print $OUT "$start:\t", $dbline[$start], "\n"; |
1022 | } |
1023 | last; |
1024 | } |
1025 | } '; |
1026 | print $OUT "/$pat/: not found\n" if ($start == $end); |
1027 | next CMD; }; |
1028 | $cmd =~ /^\?(.*)$/ && do { |
1029 | $inpat = $1; |
1030 | $inpat =~ s:([^\\])\?$:$1:; |
1031 | if ($inpat ne "") { |
1032 | eval '$inpat =~ m'."\a$inpat\a"; |
1033 | if ($@ ne "") { |
1034 | print $OUT "$@"; |
1035 | next CMD; |
1036 | } |
1037 | $pat = $inpat; |
1038 | } |
1039 | $end = $start; |
1d06cb2d |
1040 | $incr = -1; |
d338d6fe |
1041 | eval ' |
1042 | for (;;) { |
1043 | --$start; |
1044 | $start = $max if ($start <= 0); |
1045 | last if ($start == $end); |
1046 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
1047 | if ($emacs) { |
1048 | print $OUT "\032\032$filename:$start:0\n"; |
1049 | } else { |
1050 | print $OUT "$start:\t", $dbline[$start], "\n"; |
1051 | } |
1052 | last; |
1053 | } |
1054 | } '; |
1055 | print $OUT "?$pat?: not found\n" if ($start == $end); |
1056 | next CMD; }; |
1057 | $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { |
1058 | pop(@hist) if length($cmd) > 1; |
1059 | $i = $1 ? ($#hist-($2?$2:1)) : ($2?$2:$#hist); |
6921e3ed |
1060 | $cmd = $hist[$i]; |
615b993b |
1061 | print $OUT $cmd, "\n"; |
d338d6fe |
1062 | redo CMD; }; |
55497cff |
1063 | $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do { |
ee971a18 |
1064 | &system($1); |
d338d6fe |
1065 | next CMD; }; |
1066 | $cmd =~ /^$rc([^$rc].*)$/ && do { |
1067 | $pat = "^$1"; |
1068 | pop(@hist) if length($cmd) > 1; |
1069 | for ($i = $#hist; $i; --$i) { |
1070 | last if $hist[$i] =~ /$pat/; |
1071 | } |
1072 | if (!$i) { |
1073 | print $OUT "No such command!\n\n"; |
1074 | next CMD; |
1075 | } |
6921e3ed |
1076 | $cmd = $hist[$i]; |
615b993b |
1077 | print $OUT $cmd, "\n"; |
d338d6fe |
1078 | redo CMD; }; |
1079 | $cmd =~ /^$sh$/ && do { |
1080 | &system($ENV{SHELL}||"/bin/sh"); |
1081 | next CMD; }; |
ee971a18 |
1082 | $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do { |
1083 | &system($ENV{SHELL}||"/bin/sh","-c",$1); |
d338d6fe |
1084 | next CMD; }; |
1085 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { |
1086 | $end = $2?($#hist-$2):0; |
1087 | $hist = 0 if $hist < 0; |
1088 | for ($i=$#hist; $i>$end; $i--) { |
1089 | print $OUT "$i: ",$hist[$i],"\n" |
1090 | unless $hist[$i] =~ /^.?$/; |
1091 | }; |
1092 | next CMD; }; |
b9b857e2 |
1093 | $cmd =~ s/^p$/print {\$DB::OUT} \$_/; |
1094 | $cmd =~ s/^p\b/print {\$DB::OUT} /; |
d338d6fe |
1095 | $cmd =~ /^=/ && do { |
1096 | if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { |
1097 | $alias{$k}="s~$k~$v~"; |
1098 | print $OUT "$k = $v\n"; |
1099 | } elsif ($cmd =~ /^=\s*$/) { |
1100 | foreach $k (sort keys(%alias)) { |
1101 | if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { |
1102 | print $OUT "$k = $v\n"; |
1103 | } else { |
1104 | print $OUT "$k\t$alias{$k}\n"; |
1105 | }; |
1106 | }; |
1107 | }; |
1108 | next CMD; }; |
1109 | $cmd =~ /^\|\|?\s*[^|]/ && do { |
1110 | if ($pager =~ /^\|/) { |
1111 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
1112 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
1113 | } else { |
1114 | open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); |
1115 | } |
1116 | unless ($piped=open(OUT,$pager)) { |
1117 | &warn("Can't pipe output to `$pager'"); |
1118 | if ($pager =~ /^\|/) { |
1119 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
1120 | open(STDOUT,">&SAVEOUT") |
1121 | || &warn("Can't restore STDOUT"); |
1122 | close(SAVEOUT); |
1123 | } else { |
1124 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
1125 | } |
1126 | next CMD; |
1127 | } |
77fb7b16 |
1128 | $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/ |
d338d6fe |
1129 | && "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}; |
1130 | $selected= select(OUT); |
1131 | $|= 1; |
1132 | select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; |
1133 | $cmd =~ s/^\|+\s*//; |
1134 | redo PIPE; }; |
1135 | # XXX Local variants do not work! |
6027b9a3 |
1136 | $cmd =~ s/^t\s/\$DB::trace |= 1;\n/; |
d338d6fe |
1137 | $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; |
1138 | $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; |
1139 | } # PIPE: |
d338d6fe |
1140 | $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; |
1141 | if ($onetimeDump) { |
1142 | $onetimeDump = undef; |
f36776d9 |
1143 | } elsif ($term_pid == $$) { |
d338d6fe |
1144 | print $OUT "\n"; |
1145 | } |
1146 | } continue { # CMD: |
1147 | if ($piped) { |
1148 | if ($pager =~ /^\|/) { |
1149 | $?= 0; close(OUT) || &warn("Can't close DB::OUT"); |
1150 | &warn( "Pager `$pager' failed: ", |
1151 | ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), |
1152 | ( $? & 128 ) ? " (core dumped)" : "", |
1153 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; |
1154 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
1155 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
77fb7b16 |
1156 | $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq \&DB::catch; |
d338d6fe |
1157 | # Will stop ignoring SIGPIPE if done like nohup(1) |
1158 | # does SIGINT but Perl doesn't give us a choice. |
1159 | } else { |
1160 | open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); |
1161 | } |
1162 | close(SAVEOUT); |
1163 | select($selected), $selected= "" unless $selected eq ""; |
1164 | $piped= ""; |
1165 | } |
1166 | } # CMD: |
04fb8f4b |
1167 | $exiting = 1 unless defined $cmd; |
e63173ce |
1168 | foreach $evalarg (@$post) { |
1169 | &eval; |
1170 | } |
d338d6fe |
1171 | } # if ($single || $signal) |
22fae026 |
1172 | ($@, $!, $^E, $,, $/, $\, $^W) = @saved; |
d338d6fe |
1173 | (); |
1174 | } |
1175 | |
1176 | # The following code may be executed now: |
1177 | # BEGIN {warn 4} |
1178 | |
1179 | sub sub { |
ee971a18 |
1180 | my ($al, $ret, @ret) = ""; |
7d4a81e5 |
1181 | if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') { |
1182 | $al = " for $$sub"; |
ee971a18 |
1183 | } |
f8b5b99c |
1184 | local $stack_depth = $stack_depth + 1; # Protect from non-local exits |
1185 | $#stack = $stack_depth; |
1186 | $stack[-1] = $single; |
d338d6fe |
1187 | $single &= 1; |
f8b5b99c |
1188 | $single |= 4 if $stack_depth == $deep; |
04fb8f4b |
1189 | ($frame & 4 |
f8b5b99c |
1190 | ? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "), |
04fb8f4b |
1191 | # Why -1? But it works! :-( |
1192 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
f8b5b99c |
1193 | : print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame; |
d338d6fe |
1194 | if (wantarray) { |
1195 | @ret = &$sub; |
f8b5b99c |
1196 | $single |= $stack[$stack_depth--]; |
36477c24 |
1197 | ($frame & 4 |
f8b5b99c |
1198 | ? ( (print $LINEINFO ' ' x $stack_depth, "out "), |
36477c24 |
1199 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
f8b5b99c |
1200 | : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2; |
1201 | if ($doret eq $stack_depth or $frame & 16) { |
1202 | my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); |
1203 | print $fh ' ' x $stack_depth if $frame & 16; |
7ea36084 |
1204 | print $fh "list context return from $sub:\n"; |
1205 | dumpit($fh, \@ret ); |
1206 | $doret = -2; |
1207 | } |
d338d6fe |
1208 | @ret; |
1209 | } else { |
fb73857a |
1210 | if (defined wantarray) { |
1211 | $ret = &$sub; |
1212 | } else { |
1213 | &$sub; undef $ret; |
1214 | }; |
f8b5b99c |
1215 | $single |= $stack[$stack_depth--]; |
36477c24 |
1216 | ($frame & 4 |
f8b5b99c |
1217 | ? ( (print $LINEINFO ' ' x $stack_depth, "out "), |
36477c24 |
1218 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
f8b5b99c |
1219 | : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2; |
1220 | if ($doret eq $stack_depth or $frame & 16 and defined wantarray) { |
1221 | my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); |
1222 | print $fh (' ' x $stack_depth) if $frame & 16; |
7ea36084 |
1223 | print $fh (defined wantarray |
1224 | ? "scalar context return from $sub: " |
1225 | : "void context return from $sub\n"); |
1226 | dumpit( $fh, $ret ) if defined wantarray; |
1227 | $doret = -2; |
1228 | } |
d338d6fe |
1229 | $ret; |
1230 | } |
1231 | } |
1232 | |
1233 | sub save { |
22fae026 |
1234 | @saved = ($@, $!, $^E, $,, $/, $\, $^W); |
d338d6fe |
1235 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; |
1236 | } |
1237 | |
1238 | # The following takes its argument via $evalarg to preserve current @_ |
1239 | |
1240 | sub eval { |
1241 | my @res; |
1242 | { |
d338d6fe |
1243 | my $otrace = $trace; |
1244 | my $osingle = $single; |
1245 | my $od = $^D; |
1246 | @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug |
1247 | $trace = $otrace; |
1248 | $single = $osingle; |
1249 | $^D = $od; |
1250 | } |
1251 | my $at = $@; |
36477c24 |
1252 | local $saved[0]; # Preserve the old value of $@ |
22fae026 |
1253 | eval { &DB::save }; |
d338d6fe |
1254 | if ($at) { |
1255 | print $OUT $at; |
1d06cb2d |
1256 | } elsif ($onetimeDump eq 'dump') { |
7ea36084 |
1257 | dumpit($OUT, \@res); |
1d06cb2d |
1258 | } elsif ($onetimeDump eq 'methods') { |
1259 | methods($res[0]); |
d338d6fe |
1260 | } |
6027b9a3 |
1261 | @res; |
d338d6fe |
1262 | } |
1263 | |
55497cff |
1264 | sub postponed_sub { |
1265 | my $subname = shift; |
1d06cb2d |
1266 | if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) { |
55497cff |
1267 | my $offset = $1 || 0; |
1268 | # Filename below can contain ':' |
1d06cb2d |
1269 | my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/); |
55497cff |
1270 | if ($i) { |
fb73857a |
1271 | $i += $offset; |
8ebc5c01 |
1272 | local *dbline = $main::{'_<' . $file}; |
55497cff |
1273 | local $^W = 0; # != 0 is magical below |
1274 | $had_breakpoints{$file}++; |
1275 | my $max = $#dbline; |
1276 | ++$i until $dbline[$i] != 0 or $i >= $max; |
1277 | $dbline{$i} = delete $postponed{$subname}; |
1278 | } else { |
1279 | print $OUT "Subroutine $subname not found.\n"; |
1280 | } |
1281 | return; |
1282 | } |
1d06cb2d |
1283 | elsif ($postponed{$subname} eq 'compile') { $signal = 1 } |
36477c24 |
1284 | #print $OUT "In postponed_sub for `$subname'.\n"; |
55497cff |
1285 | } |
1286 | |
1287 | sub postponed { |
3aefca04 |
1288 | if ($ImmediateStop) { |
1289 | $ImmediateStop = 0; |
1290 | $signal = 1; |
1291 | } |
55497cff |
1292 | return &postponed_sub |
1293 | unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled. |
1294 | # Cannot be done before the file is compiled |
1295 | local *dbline = shift; |
1296 | my $filename = $dbline; |
1297 | $filename =~ s/^_<//; |
36477c24 |
1298 | $signal = 1, print $OUT "'$filename' loaded...\n" |
1299 | if $break_on_load{$filename}; |
f8b5b99c |
1300 | print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame; |
0c395bd7 |
1301 | return unless $postponed_file{$filename}; |
55497cff |
1302 | $had_breakpoints{$filename}++; |
1303 | #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic |
1304 | my $key; |
1305 | for $key (keys %{$postponed_file{$filename}}) { |
1306 | $dbline{$key} = $ {$postponed_file{$filename}}{$key}; |
54d04a52 |
1307 | } |
0c395bd7 |
1308 | delete $postponed_file{$filename}; |
54d04a52 |
1309 | } |
1310 | |
d338d6fe |
1311 | sub dumpit { |
7ea36084 |
1312 | local ($savout) = select(shift); |
ee971a18 |
1313 | my $osingle = $single; |
1314 | my $otrace = $trace; |
1315 | $single = $trace = 0; |
1316 | local $frame = 0; |
1317 | local $doret = -2; |
1318 | unless (defined &main::dumpValue) { |
1319 | do 'dumpvar.pl'; |
1320 | } |
d338d6fe |
1321 | if (defined &main::dumpValue) { |
1322 | &main::dumpValue(shift); |
1323 | } else { |
1324 | print $OUT "dumpvar.pl not available.\n"; |
1325 | } |
ee971a18 |
1326 | $single = $osingle; |
1327 | $trace = $otrace; |
d338d6fe |
1328 | select ($savout); |
1329 | } |
1330 | |
36477c24 |
1331 | # Tied method do not create a context, so may get wrong message: |
1332 | |
55497cff |
1333 | sub print_trace { |
1334 | my $fh = shift; |
36477c24 |
1335 | my @sub = dump_trace($_[0] + 1, $_[1]); |
1336 | my $short = $_[2]; # Print short report, next one for sub name |
1d06cb2d |
1337 | my $s; |
55497cff |
1338 | for ($i=0; $i <= $#sub; $i++) { |
1339 | last if $signal; |
1340 | local $" = ', '; |
1341 | my $args = defined $sub[$i]{args} |
1342 | ? "(@{ $sub[$i]{args} })" |
1343 | : '' ; |
1d06cb2d |
1344 | $args = (substr $args, 0, $maxtrace - 3) . '...' |
1345 | if length $args > $maxtrace; |
36477c24 |
1346 | my $file = $sub[$i]{file}; |
1347 | $file = $file eq '-e' ? $file : "file `$file'" unless $short; |
1d06cb2d |
1348 | $s = $sub[$i]{sub}; |
1349 | $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace; |
36477c24 |
1350 | if ($short) { |
1d06cb2d |
1351 | my $sub = @_ >= 4 ? $_[3] : $s; |
36477c24 |
1352 | print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n"; |
1353 | } else { |
1d06cb2d |
1354 | print $fh "$sub[$i]{context} = $s$args" . |
36477c24 |
1355 | " called from $file" . |
1356 | " line $sub[$i]{line}\n"; |
1357 | } |
55497cff |
1358 | } |
1359 | } |
1360 | |
1361 | sub dump_trace { |
1362 | my $skip = shift; |
36477c24 |
1363 | my $count = shift || 1e9; |
1364 | $skip++; |
1365 | $count += $skip; |
55497cff |
1366 | my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context); |
04fb8f4b |
1367 | my $nothard = not $frame & 8; |
1368 | local $frame = 0; # Do not want to trace this. |
1369 | my $otrace = $trace; |
1370 | $trace = 0; |
55497cff |
1371 | for ($i = $skip; |
36477c24 |
1372 | $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i); |
55497cff |
1373 | $i++) { |
1374 | @a = (); |
1375 | for $arg (@args) { |
04fb8f4b |
1376 | my $type; |
1377 | if (not defined $arg) { |
1378 | push @a, "undef"; |
1379 | } elsif ($nothard and tied $arg) { |
1380 | push @a, "tied"; |
1381 | } elsif ($nothard and $type = ref $arg) { |
1382 | push @a, "ref($type)"; |
1383 | } else { |
1384 | local $_ = "$arg"; # Safe to stringify now - should not call f(). |
1385 | s/([\'\\])/\\$1/g; |
1386 | s/(.*)/'$1'/s |
1387 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; |
1388 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
1389 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
1390 | push(@a, $_); |
1391 | } |
55497cff |
1392 | } |
7ea36084 |
1393 | $context = $context ? '@' : (defined $context ? "\$" : '.'); |
55497cff |
1394 | $args = $h ? [@a] : undef; |
1395 | $e =~ s/\n\s*\;\s*\Z// if $e; |
1d06cb2d |
1396 | $e =~ s/([\\\'])/\\$1/g if $e; |
55497cff |
1397 | if ($r) { |
1398 | $sub = "require '$e'"; |
1399 | } elsif (defined $r) { |
1400 | $sub = "eval '$e'"; |
1401 | } elsif ($sub eq '(eval)') { |
1402 | $sub = "eval {...}"; |
1403 | } |
1404 | push(@sub, {context => $context, sub => $sub, args => $args, |
1405 | file => $file, line => $line}); |
1406 | last if $signal; |
1407 | } |
04fb8f4b |
1408 | $trace = $otrace; |
55497cff |
1409 | @sub; |
1410 | } |
1411 | |
d338d6fe |
1412 | sub action { |
1413 | my $action = shift; |
1414 | while ($action =~ s/\\$//) { |
1415 | #print $OUT "+ "; |
1416 | #$action .= "\n"; |
1417 | $action .= &gets; |
1418 | } |
1419 | $action; |
1420 | } |
1421 | |
1422 | sub gets { |
1423 | local($.); |
1424 | #<IN>; |
1425 | &readline("cont: "); |
1426 | } |
1427 | |
1428 | sub system { |
1429 | # We save, change, then restore STDIN and STDOUT to avoid fork() since |
1430 | # many non-Unix systems can do system() but have problems with fork(). |
1431 | open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN"); |
8ee058cb |
1432 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
d338d6fe |
1433 | open(STDIN,"<&IN") || &warn("Can't redirect STDIN"); |
1434 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
1435 | system(@_); |
1436 | open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN"); |
1437 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
1438 | close(SAVEIN); close(SAVEOUT); |
1439 | &warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")", |
1440 | ( $? & 128 ) ? " (core dumped)" : "", |
1441 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; |
1442 | $?; |
1443 | } |
1444 | |
1445 | sub setterm { |
54d04a52 |
1446 | local $frame = 0; |
ee971a18 |
1447 | local $doret = -2; |
ee971a18 |
1448 | eval { require Term::ReadLine } or die $@; |
d338d6fe |
1449 | if ($notty) { |
1450 | if ($tty) { |
1451 | open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!"; |
1452 | open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!"; |
1453 | $IN = \*IN; |
1454 | $OUT = \*OUT; |
1455 | my $sel = select($OUT); |
1456 | $| = 1; |
1457 | select($sel); |
1458 | } else { |
1459 | eval "require Term::Rendezvous;" or die $@; |
1460 | my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; |
1461 | my $term_rv = new Term::Rendezvous $rv; |
1462 | $IN = $term_rv->IN; |
1463 | $OUT = $term_rv->OUT; |
1464 | } |
1465 | } |
1466 | if (!$rl) { |
1467 | $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; |
1468 | } else { |
1469 | $term = new Term::ReadLine 'perldb', $IN, $OUT; |
1470 | |
a737e074 |
1471 | $rl_attribs = $term->Attribs; |
1472 | $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}' |
1473 | if defined $rl_attribs->{basic_word_break_characters} |
1474 | and index($rl_attribs->{basic_word_break_characters}, ":") == -1; |
1475 | $rl_attribs->{special_prefixes} = '$@&%'; |
1476 | $rl_attribs->{completer_word_break_characters} .= '$@&%'; |
1477 | $rl_attribs->{completion_function} = \&db_complete; |
d338d6fe |
1478 | } |
1479 | $LINEINFO = $OUT unless defined $LINEINFO; |
1480 | $lineinfo = $console unless defined $lineinfo; |
1481 | $term->MinLine(2); |
54d04a52 |
1482 | if ($term->Features->{setHistory} and "@hist" ne "?") { |
1483 | $term->SetHistory(@hist); |
1484 | } |
7a2e2cd6 |
1485 | ornaments($ornaments) if defined $ornaments; |
f36776d9 |
1486 | $term_pid = $$; |
1487 | } |
1488 | |
1489 | sub resetterm { # We forked, so we need a different TTY |
1490 | $term_pid = $$; |
1491 | if (defined &get_fork_TTY) { |
1492 | &get_fork_TTY; |
1493 | } elsif (not defined $fork_TTY |
1494 | and defined $ENV{TERM} and $ENV{TERM} eq 'xterm' |
1495 | and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) { |
1496 | # Possibly _inside_ XTERM |
1497 | open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\ |
1498 | sleep 10000000' |]; |
1499 | $fork_TTY = <XT>; |
1500 | chomp $fork_TTY; |
1501 | } |
1502 | if (defined $fork_TTY) { |
1503 | TTY($fork_TTY); |
1504 | undef $fork_TTY; |
1505 | } else { |
405ff068 |
1506 | print_help(<<EOP); |
1507 | I<#########> Forked, but do not know how to change a B<TTY>. I<#########> |
1508 | Define B<\$DB::fork_TTY> |
1509 | - or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>. |
1510 | The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use. |
1511 | On I<UNIX>-like systems one can get the name of a I<TTY> for the given window |
1512 | by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>. |
1513 | EOP |
f36776d9 |
1514 | } |
d338d6fe |
1515 | } |
1516 | |
1517 | sub readline { |
54d04a52 |
1518 | if (@typeahead) { |
1519 | my $left = @typeahead; |
1520 | my $got = shift @typeahead; |
1521 | print $OUT "auto(-$left)", shift, $got, "\n"; |
1522 | $term->AddHistory($got) |
1523 | if length($got) > 1 and defined $term->Features->{addHistory}; |
1524 | return $got; |
1525 | } |
d338d6fe |
1526 | local $frame = 0; |
ee971a18 |
1527 | local $doret = -2; |
d338d6fe |
1528 | $term->readline(@_); |
1529 | } |
1530 | |
1531 | sub dump_option { |
1532 | my ($opt, $val)= @_; |
55497cff |
1533 | $val = option_val($opt,'N/A'); |
1534 | $val =~ s/([\\\'])/\\$1/g; |
1535 | printf $OUT "%20s = '%s'\n", $opt, $val; |
1536 | } |
1537 | |
1538 | sub option_val { |
1539 | my ($opt, $default)= @_; |
1540 | my $val; |
d338d6fe |
1541 | if (defined $optionVars{$opt} |
1542 | and defined $ {$optionVars{$opt}}) { |
1543 | $val = $ {$optionVars{$opt}}; |
1544 | } elsif (defined $optionAction{$opt} |
1545 | and defined &{$optionAction{$opt}}) { |
1546 | $val = &{$optionAction{$opt}}(); |
1547 | } elsif (defined $optionAction{$opt} |
1548 | and not defined $option{$opt} |
1549 | or defined $optionVars{$opt} |
1550 | and not defined $ {$optionVars{$opt}}) { |
55497cff |
1551 | $val = $default; |
d338d6fe |
1552 | } else { |
1553 | $val = $option{$opt}; |
1554 | } |
55497cff |
1555 | $val |
d338d6fe |
1556 | } |
1557 | |
1558 | sub parse_options { |
1559 | local($_)= @_; |
1560 | while ($_ ne "") { |
1561 | s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last; |
1562 | my ($opt,$sep) = ($1,$2); |
1563 | my $val; |
1564 | if ("?" eq $sep) { |
1565 | print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last |
1566 | if /^\S/; |
1567 | #&dump_option($opt); |
1568 | } elsif ($sep !~ /\S/) { |
1569 | $val = "1"; |
1570 | } elsif ($sep eq "=") { |
1571 | s/^(\S*)($|\s+)//; |
1572 | $val = $1; |
1573 | } else { #{ to "let some poor schmuck bounce on the % key in B<vi>." |
1574 | my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #} |
1575 | s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or |
1576 | print($OUT "Unclosed option value `$opt$sep$_'\n"), last; |
1577 | $val = $1; |
1578 | $val =~ s/\\([\\$end])/$1/g; |
1579 | } |
1580 | my ($option); |
1581 | my $matches = |
1582 | grep( /^\Q$opt/ && ($option = $_), @options ); |
1583 | $matches = grep( /^\Q$opt/i && ($option = $_), @options ) |
1584 | unless $matches; |
1585 | print $OUT "Unknown option `$opt'\n" unless $matches; |
1586 | print $OUT "Ambiguous option `$opt'\n" if $matches > 1; |
1587 | $option{$option} = $val if $matches == 1 and defined $val; |
ee971a18 |
1588 | eval "local \$frame = 0; local \$doret = -2; |
1589 | require '$optionRequire{$option}'" |
d338d6fe |
1590 | if $matches == 1 and defined $optionRequire{$option} and defined $val; |
1591 | $ {$optionVars{$option}} = $val |
1592 | if $matches == 1 |
1593 | and defined $optionVars{$option} and defined $val; |
1594 | & {$optionAction{$option}} ($val) |
1595 | if $matches == 1 |
1596 | and defined $optionAction{$option} |
1597 | and defined &{$optionAction{$option}} and defined $val; |
1598 | &dump_option($option) if $matches == 1 && $OUT ne \*STDERR; # Not $rcfile |
1599 | s/^\s+//; |
1600 | } |
1601 | } |
1602 | |
54d04a52 |
1603 | sub set_list { |
1604 | my ($stem,@list) = @_; |
1605 | my $val; |
1606 | $ENV{"$ {stem}_n"} = @list; |
1607 | for $i (0 .. $#list) { |
1608 | $val = $list[$i]; |
1609 | $val =~ s/\\/\\\\/g; |
ee971a18 |
1610 | $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg; |
54d04a52 |
1611 | $ENV{"$ {stem}_$i"} = $val; |
1612 | } |
1613 | } |
1614 | |
1615 | sub get_list { |
1616 | my $stem = shift; |
1617 | my @list; |
1618 | my $n = delete $ENV{"$ {stem}_n"}; |
1619 | my $val; |
1620 | for $i (0 .. $n - 1) { |
1621 | $val = delete $ENV{"$ {stem}_$i"}; |
1622 | $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge; |
1623 | push @list, $val; |
1624 | } |
1625 | @list; |
1626 | } |
1627 | |
d338d6fe |
1628 | sub catch { |
1629 | $signal = 1; |
4639966b |
1630 | return; # Put nothing on the stack - malloc/free land! |
d338d6fe |
1631 | } |
1632 | |
1633 | sub warn { |
1634 | my($msg)= join("",@_); |
1635 | $msg .= ": $!\n" unless $msg =~ /\n$/; |
1636 | print $OUT $msg; |
1637 | } |
1638 | |
1639 | sub TTY { |
f36776d9 |
1640 | if (@_ and $term and $term->Features->{newTTY}) { |
1641 | my ($in, $out) = shift; |
1642 | if ($in =~ /,/) { |
1643 | ($in, $out) = split /,/, $in, 2; |
1644 | } else { |
1645 | $out = $in; |
1646 | } |
1647 | open IN, $in or die "cannot open `$in' for read: $!"; |
1648 | open OUT, ">$out" or die "cannot open `$out' for write: $!"; |
1649 | $term->newTTY(\*IN, \*OUT); |
1650 | $IN = \*IN; |
1651 | $OUT = \*OUT; |
1652 | return $tty = $in; |
1653 | } elsif ($term and @_) { |
1654 | &warn("Too late to set TTY, enabled on next `R'!\n"); |
43aed9ee |
1655 | } |
1656 | $tty = shift if @_; |
d338d6fe |
1657 | $tty or $console; |
1658 | } |
1659 | |
1660 | sub noTTY { |
1661 | if ($term) { |
43aed9ee |
1662 | &warn("Too late to set noTTY, enabled on next `R'!\n") if @_; |
d338d6fe |
1663 | } |
43aed9ee |
1664 | $notty = shift if @_; |
d338d6fe |
1665 | $notty; |
1666 | } |
1667 | |
1668 | sub ReadLine { |
1669 | if ($term) { |
43aed9ee |
1670 | &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_; |
d338d6fe |
1671 | } |
43aed9ee |
1672 | $rl = shift if @_; |
d338d6fe |
1673 | $rl; |
1674 | } |
1675 | |
a737e074 |
1676 | sub tkRunning { |
1677 | if ($ {$term->Features}{tkRunning}) { |
1678 | return $term->tkRunning(@_); |
1679 | } else { |
1680 | print $OUT "tkRunning not supported by current ReadLine package.\n"; |
1681 | 0; |
1682 | } |
1683 | } |
1684 | |
d338d6fe |
1685 | sub NonStop { |
1686 | if ($term) { |
43aed9ee |
1687 | &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_; |
d338d6fe |
1688 | } |
43aed9ee |
1689 | $runnonstop = shift if @_; |
d338d6fe |
1690 | $runnonstop; |
1691 | } |
1692 | |
1693 | sub pager { |
1694 | if (@_) { |
1695 | $pager = shift; |
1696 | $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; |
1697 | } |
1698 | $pager; |
1699 | } |
1700 | |
1701 | sub shellBang { |
1702 | if (@_) { |
1703 | $sh = quotemeta shift; |
1704 | $sh .= "\\b" if $sh =~ /\w$/; |
1705 | } |
1706 | $psh = $sh; |
1707 | $psh =~ s/\\b$//; |
1708 | $psh =~ s/\\(.)/$1/g; |
1709 | &sethelp; |
1710 | $psh; |
1711 | } |
1712 | |
7a2e2cd6 |
1713 | sub ornaments { |
1714 | if (defined $term) { |
1715 | local ($warnLevel,$dieLevel) = (0, 1); |
1716 | return '' unless $term->Features->{ornaments}; |
1717 | eval { $term->ornaments(@_) } || ''; |
1718 | } else { |
1719 | $ornaments = shift; |
1720 | } |
1721 | } |
1722 | |
d338d6fe |
1723 | sub recallCommand { |
1724 | if (@_) { |
1725 | $rc = quotemeta shift; |
1726 | $rc .= "\\b" if $rc =~ /\w$/; |
1727 | } |
1728 | $prc = $rc; |
1729 | $prc =~ s/\\b$//; |
1730 | $prc =~ s/\\(.)/$1/g; |
1731 | &sethelp; |
1732 | $prc; |
1733 | } |
1734 | |
1735 | sub LineInfo { |
1736 | return $lineinfo unless @_; |
1737 | $lineinfo = shift; |
1738 | my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; |
1739 | $emacs = ($stream =~ /^\|/); |
1740 | open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); |
1741 | $LINEINFO = \*LINEINFO; |
1742 | my $save = select($LINEINFO); |
1743 | $| = 1; |
1744 | select($save); |
1745 | $lineinfo; |
1746 | } |
1747 | |
ee971a18 |
1748 | sub list_versions { |
1749 | my %version; |
1750 | my $file; |
1751 | for (keys %INC) { |
1752 | $file = $_; |
1753 | s,\.p[lm]$,,i ; |
1754 | s,/,::,g ; |
1755 | s/^perl5db$/DB/; |
55497cff |
1756 | s/^Term::ReadLine::readline$/readline/; |
ee971a18 |
1757 | if (defined $ { $_ . '::VERSION' }) { |
1758 | $version{$file} = "$ { $_ . '::VERSION' } from "; |
1759 | } |
1760 | $version{$file} .= $INC{$file}; |
1761 | } |
2c53b6d0 |
1762 | dumpit($OUT,\%version); |
ee971a18 |
1763 | } |
1764 | |
d338d6fe |
1765 | sub sethelp { |
1766 | $help = " |
6027b9a3 |
1767 | B<T> Stack trace. |
1768 | B<s> [I<expr>] Single step [in I<expr>]. |
1769 | B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>]. |
1770 | <B<CR>> Repeat last B<n> or B<s> command. |
1771 | B<r> Return from current subroutine. |
1772 | B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint |
55497cff |
1773 | at the specified position. |
6027b9a3 |
1774 | B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>. |
1775 | B<l> I<min>B<->I<max> List lines I<min> through I<max>. |
1776 | B<l> I<line> List single I<line>. |
1777 | B<l> I<subname> List first window of lines from subroutine. |
1778 | B<l> List next window of lines. |
1779 | B<-> List previous window of lines. |
1780 | B<w> [I<line>] List window around I<line>. |
1781 | B<.> Return to the executed line. |
1782 | B<f> I<filename> Switch to viewing I<filename>. Must be loaded. |
1783 | B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional. |
1784 | B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional. |
1785 | B<L> List all breakpoints and actions. |
1786 | B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>. |
1787 | B<t> Toggle trace mode. |
1788 | B<t> I<expr> Trace through execution of I<expr>. |
1789 | B<b> [I<line>] [I<condition>] |
1790 | Set breakpoint; I<line> defaults to the current execution line; |
1791 | I<condition> breaks if it evaluates to true, defaults to '1'. |
1792 | B<b> I<subname> [I<condition>] |
d338d6fe |
1793 | Set breakpoint at first line of subroutine. |
6027b9a3 |
1794 | B<b> B<load> I<filename> Set breakpoint on `require'ing the given file. |
1795 | B<b> B<postpone> I<subname> [I<condition>] |
55497cff |
1796 | Set breakpoint at first line of subroutine after |
1797 | it is compiled. |
6027b9a3 |
1798 | B<b> B<compile> I<subname> |
1d06cb2d |
1799 | Stop after the subroutine is compiled. |
6027b9a3 |
1800 | B<d> [I<line>] Delete the breakpoint for I<line>. |
1801 | B<D> Delete all breakpoints. |
1802 | B<a> [I<line>] I<command> |
1803 | Set an action to be done before the I<line> is executed. |
1804 | Sequence is: check for breakpoint/watchpoint, print line |
1805 | if necessary, do action, prompt user if necessary, |
1806 | execute expression. |
1807 | B<A> Delete all actions. |
1808 | B<W> I<expr> Add a global watch-expression. |
1809 | B<W> Delete all watch-expressions. |
1810 | B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current). |
1811 | Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps. |
1812 | B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\". |
1813 | B<x> I<expr> Evals expression in array context, dumps the result. |
1814 | B<m> I<expr> Evals expression in array context, prints methods callable |
1d06cb2d |
1815 | on the first element of the result. |
6027b9a3 |
1816 | B<m> I<class> Prints methods callable via the given class. |
1817 | B<O> [I<opt>[B<=>I<val>]] [I<opt>B<\">I<val>B<\">] [I<opt>B<?>]... |
1818 | Set or query values of options. I<val> defaults to 1. I<opt> can |
d338d6fe |
1819 | be abbreviated. Several options can be listed. |
6027b9a3 |
1820 | I<recallCommand>, I<ShellBang>: chars used to recall command or spawn shell; |
1821 | I<pager>: program for output of \"|cmd\"; |
1822 | I<tkRunning>: run Tk while prompting (with ReadLine); |
1823 | I<signalLevel> I<warnLevel> I<dieLevel>: level of verbosity; |
1824 | I<inhibit_exit> Allows stepping off the end of the script. |
3aefca04 |
1825 | I<ImmediateStop> Debugger should stop as early as possible. |
6027b9a3 |
1826 | The following options affect what happens with B<V>, B<X>, and B<x> commands: |
1827 | I<arrayDepth>, I<hashDepth>: print only first N elements ('' for all); |
1828 | I<compactDump>, I<veryCompact>: change style of array and hash dump; |
1829 | I<globPrint>: whether to print contents of globs; |
1830 | I<DumpDBFiles>: dump arrays holding debugged files; |
1831 | I<DumpPackages>: dump symbol tables of packages; |
22fae026 |
1832 | I<DumpReused>: dump contents of \"reused\" addresses; |
6027b9a3 |
1833 | I<quote>, I<HighBit>, I<undefPrint>: change style of string dump; |
ee239bfe |
1834 | I<bareStringify>: Do not print the overload-stringified value; |
6027b9a3 |
1835 | Option I<PrintRet> affects printing of return value after B<r> command, |
1836 | I<frame> affects printing messages on entry and exit from subroutines. |
1837 | I<AutoTrace> affects printing messages on every possible breaking point. |
1838 | I<maxTraceLen> gives maximal length of evals/args listed in stack trace. |
1839 | I<ornaments> affects screen appearance of the command line. |
d338d6fe |
1840 | During startup options are initialized from \$ENV{PERLDB_OPTS}. |
6027b9a3 |
1841 | You can put additional initialization options I<TTY>, I<noTTY>, |
1842 | I<ReadLine>, and I<NonStop> there (or use `B<R>' after you set them). |
1843 | B<<> I<expr> Define Perl command to run before each prompt. |
1844 | B<<<> I<expr> Add to the list of Perl commands to run before each prompt. |
1845 | B<>> I<expr> Define Perl command to run after each prompt. |
1846 | B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt. |
1847 | B<{> I<db_command> Define debugger command to run before each prompt. |
1848 | B<{{> I<db_command> Add to the list of debugger commands to run before each prompt. |
1849 | B<$prc> I<number> Redo a previous command (default previous command). |
1850 | B<$prc> I<-number> Redo number'th-to-last command. |
1851 | B<$prc> I<pattern> Redo last command that started with I<pattern>. |
1852 | See 'B<O> I<recallCommand>' too. |
1853 | B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" |
d338d6fe |
1854 | . ( $rc eq $sh ? "" : " |
6027b9a3 |
1855 | B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " |
1856 | See 'B<O> I<shellBang>' too. |
1857 | B<H> I<-number> Display last number commands (default all). |
1858 | B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package. |
1859 | B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager. |
1860 | B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well. |
1861 | B<\=> [I<alias> I<value>] Define a command alias, or list current aliases. |
1862 | I<command> Execute as a perl statement in current package. |
1863 | B<v> Show versions of loaded modules. |
1864 | B<R> Pure-man-restart of debugger, some of debugger state |
55497cff |
1865 | and command-line options may be lost. |
36477c24 |
1866 | Currently the following setting are preserved: |
6027b9a3 |
1867 | history, breakpoints and actions, debugger B<O>ptions |
1868 | and the following command-line options: I<-w>, I<-I>, I<-e>. |
1869 | B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page. |
d9f67849 |
1870 | Complete description of debugger is available in B<perldebug> |
1871 | section of Perl documention |
6027b9a3 |
1872 | B<h h> Summary of debugger commands. |
405ff068 |
1873 | B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction. |
d338d6fe |
1874 | |
1875 | "; |
1876 | $summary = <<"END_SUM"; |
6027b9a3 |
1877 | I<List/search source lines:> I<Control script execution:> |
1878 | B<l> [I<ln>|I<sub>] List source code B<T> Stack trace |
1879 | B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr] |
1880 | B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs |
d9f67849 |
1881 | B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s> |
6027b9a3 |
1882 | B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine |
1883 | B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position |
1884 | I<Debugger controls:> B<L> List break/watch/actions |
1885 | B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr] |
d9f67849 |
1886 | B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint |
6027b9a3 |
1887 | B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints |
1888 | B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line |
1889 | B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression |
1890 | B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch |
d9f67849 |
1891 | B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess |
6027b9a3 |
1892 | B<q> or B<^D> Quit B<R> Attempt a restart |
1893 | I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr> |
1894 | B<x>|B<m> I<expr> Evals expr in array context, dumps the result or lists methods. |
1895 | B<p> I<expr> Print expression (uses script's current package). |
1896 | B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern |
1897 | B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern. |
1898 | B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\". |
d9f67849 |
1899 | I<More help for> B<db_cmd>I<:> Type B<h> I<cmd_letter> Run B<perldoc perldebug> for more help. |
d338d6fe |
1900 | END_SUM |
55497cff |
1901 | # ')}}; # Fix balance of Emacs parsing |
d338d6fe |
1902 | } |
1903 | |
6027b9a3 |
1904 | sub print_help { |
1905 | my $message = shift; |
1906 | if (@Term::ReadLine::TermCap::rl_term_set) { |
1907 | $message =~ s/B<([^>]+|>)>/$Term::ReadLine::TermCap::rl_term_set[2]$1$Term::ReadLine::TermCap::rl_term_set[3]/g; |
1908 | $message =~ s/I<([^>]+|>)>/$Term::ReadLine::TermCap::rl_term_set[0]$1$Term::ReadLine::TermCap::rl_term_set[1]/g; |
1909 | } |
1910 | print $OUT $message; |
1911 | } |
1912 | |
d338d6fe |
1913 | sub diesignal { |
54d04a52 |
1914 | local $frame = 0; |
ee971a18 |
1915 | local $doret = -2; |
77fb7b16 |
1916 | $SIG{'ABRT'} = 'DEFAULT'; |
d338d6fe |
1917 | kill 'ABRT', $$ if $panic++; |
ee85b803 |
1918 | if (defined &Carp::longmess) { |
1919 | local $SIG{__WARN__} = ''; |
1920 | local $Carp::CarpLevel = 2; # mydie + confess |
1921 | &warn(Carp::longmess("Signal @_")); |
1922 | } |
1923 | else { |
1924 | print $DB::OUT "Got signal @_\n"; |
1925 | } |
d338d6fe |
1926 | kill 'ABRT', $$; |
1927 | } |
1928 | |
1929 | sub dbwarn { |
54d04a52 |
1930 | local $frame = 0; |
ee971a18 |
1931 | local $doret = -2; |
d338d6fe |
1932 | local $SIG{__WARN__} = ''; |
77fb7b16 |
1933 | local $SIG{__DIE__} = ''; |
fb73857a |
1934 | eval { require Carp } if defined $^S; # If error/warning during compilation, |
1935 | # require may be broken. |
1936 | warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"), |
1937 | return unless defined &Carp::longmess; |
d338d6fe |
1938 | my ($mysingle,$mytrace) = ($single,$trace); |
1939 | $single = 0; $trace = 0; |
1940 | my $mess = Carp::longmess(@_); |
1941 | ($single,$trace) = ($mysingle,$mytrace); |
d338d6fe |
1942 | &warn($mess); |
d338d6fe |
1943 | } |
1944 | |
1945 | sub dbdie { |
54d04a52 |
1946 | local $frame = 0; |
ee971a18 |
1947 | local $doret = -2; |
d338d6fe |
1948 | local $SIG{__DIE__} = ''; |
1949 | local $SIG{__WARN__} = ''; |
1950 | my $i = 0; my $ineval = 0; my $sub; |
fb73857a |
1951 | if ($dieLevel > 2) { |
d338d6fe |
1952 | local $SIG{__WARN__} = \&dbwarn; |
fb73857a |
1953 | &warn(@_); # Yell no matter what |
1954 | return; |
1955 | } |
1956 | if ($dieLevel < 2) { |
1957 | die @_ if $^S; # in eval propagate |
d338d6fe |
1958 | } |
fb73857a |
1959 | eval { require Carp } if defined $^S; # If error/warning during compilation, |
1960 | # require may be broken. |
1961 | die(@_, "\nCannot print stack trace, load with -MCarp option to see stack") |
1962 | unless defined &Carp::longmess; |
d338d6fe |
1963 | # We do not want to debug this chunk (automatic disabling works |
1964 | # inside DB::DB, but not in Carp). |
1965 | my ($mysingle,$mytrace) = ($single,$trace); |
1966 | $single = 0; $trace = 0; |
1967 | my $mess = Carp::longmess(@_); |
1968 | ($single,$trace) = ($mysingle,$mytrace); |
d338d6fe |
1969 | die $mess; |
1970 | } |
1971 | |
d338d6fe |
1972 | sub warnLevel { |
1973 | if (@_) { |
1974 | $prevwarn = $SIG{__WARN__} unless $warnLevel; |
1975 | $warnLevel = shift; |
1976 | if ($warnLevel) { |
0b7ed949 |
1977 | $SIG{__WARN__} = \&DB::dbwarn; |
d338d6fe |
1978 | } else { |
1979 | $SIG{__WARN__} = $prevwarn; |
1980 | } |
1981 | } |
1982 | $warnLevel; |
1983 | } |
1984 | |
1985 | sub dieLevel { |
1986 | if (@_) { |
1987 | $prevdie = $SIG{__DIE__} unless $dieLevel; |
1988 | $dieLevel = shift; |
1989 | if ($dieLevel) { |
0b7ed949 |
1990 | $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2; |
1991 | #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2; |
d338d6fe |
1992 | print $OUT "Stack dump during die enabled", |
43aed9ee |
1993 | ( $dieLevel == 1 ? " outside of evals" : ""), ".\n" |
1994 | if $I_m_init; |
d338d6fe |
1995 | print $OUT "Dump printed too.\n" if $dieLevel > 2; |
1996 | } else { |
1997 | $SIG{__DIE__} = $prevdie; |
1998 | print $OUT "Default die handler restored.\n"; |
1999 | } |
2000 | } |
2001 | $dieLevel; |
2002 | } |
2003 | |
2004 | sub signalLevel { |
2005 | if (@_) { |
2006 | $prevsegv = $SIG{SEGV} unless $signalLevel; |
2007 | $prevbus = $SIG{BUS} unless $signalLevel; |
2008 | $signalLevel = shift; |
2009 | if ($signalLevel) { |
77fb7b16 |
2010 | $SIG{SEGV} = \&DB::diesignal; |
2011 | $SIG{BUS} = \&DB::diesignal; |
d338d6fe |
2012 | } else { |
2013 | $SIG{SEGV} = $prevsegv; |
2014 | $SIG{BUS} = $prevbus; |
2015 | } |
2016 | } |
2017 | $signalLevel; |
2018 | } |
2019 | |
1d06cb2d |
2020 | sub find_sub { |
2021 | my $subr = shift; |
2022 | return unless defined &$subr; |
2023 | $sub{$subr} or do { |
2024 | $subr = \&$subr; # Hard reference |
2025 | my $s; |
2026 | for (keys %sub) { |
2027 | $s = $_, last if $subr eq \&$_; |
2028 | } |
2029 | $sub{$s} if $s; |
2030 | } |
2031 | } |
2032 | |
2033 | sub methods { |
2034 | my $class = shift; |
2035 | $class = ref $class if ref $class; |
2036 | local %seen; |
2037 | local %packs; |
2038 | methods_via($class, '', 1); |
2039 | methods_via('UNIVERSAL', 'UNIVERSAL', 0); |
2040 | } |
2041 | |
2042 | sub methods_via { |
2043 | my $class = shift; |
2044 | return if $packs{$class}++; |
2045 | my $prefix = shift; |
2046 | my $prepend = $prefix ? "via $prefix: " : ''; |
2047 | my $name; |
2048 | for $name (grep {defined &{$ {"$ {class}::"}{$_}}} |
2049 | sort keys %{"$ {class}::"}) { |
477ea2b1 |
2050 | next if $seen{ $name }++; |
1d06cb2d |
2051 | print $DB::OUT "$prepend$name\n"; |
2052 | } |
2053 | return unless shift; # Recurse? |
2054 | for $name (@{"$ {class}::ISA"}) { |
2055 | $prepend = $prefix ? $prefix . " -> $name" : $name; |
2056 | methods_via($name, $prepend, 1); |
2057 | } |
2058 | } |
2059 | |
d338d6fe |
2060 | # The following BEGIN is very handy if debugger goes havoc, debugging debugger? |
2061 | |
2062 | BEGIN { # This does not compile, alas. |
2063 | $IN = \*STDIN; # For bugs before DB::OUT has been opened |
2064 | $OUT = \*STDERR; # For errors before DB::OUT has been opened |
2065 | $sh = '!'; |
2066 | $rc = ','; |
2067 | @hist = ('?'); |
2068 | $deep = 100; # warning if stack gets this deep |
2069 | $window = 10; |
2070 | $preview = 3; |
2071 | $sub = ''; |
77fb7b16 |
2072 | $SIG{INT} = \&DB::catch; |
ee971a18 |
2073 | # This may be enabled to debug debugger: |
2074 | #$warnLevel = 1 unless defined $warnLevel; |
2075 | #$dieLevel = 1 unless defined $dieLevel; |
2076 | #$signalLevel = 1 unless defined $signalLevel; |
d338d6fe |
2077 | |
2078 | $db_stop = 0; # Compiler warning |
2079 | $db_stop = 1 << 30; |
2080 | $level = 0; # Level of recursive debugging |
55497cff |
2081 | # @stack and $doret are needed in sub sub, which is called for DB::postponed. |
2082 | # Triggers bug (?) in perl is we postpone this until runtime: |
2083 | @postponed = @stack = (0); |
f8b5b99c |
2084 | $stack_depth = 0; # Localized $#stack |
55497cff |
2085 | $doret = -2; |
2086 | $frame = 0; |
d338d6fe |
2087 | } |
2088 | |
54d04a52 |
2089 | BEGIN {$^W = $ini_warn;} # Switch warnings back |
2090 | |
d338d6fe |
2091 | #use Carp; # This did break, left for debuggin |
2092 | |
55497cff |
2093 | sub db_complete { |
08a4aec0 |
2094 | # Specific code for b c l V m f O, &blah, $blah, @blah, %blah |
55497cff |
2095 | my($text, $line, $start) = @_; |
477ea2b1 |
2096 | my ($itext, $search, $prefix, $pack) = |
08a4aec0 |
2097 | ($text, "^\Q$ {'package'}::\E([^:]+)\$"); |
55497cff |
2098 | |
08a4aec0 |
2099 | return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines |
2100 | (map { /$search/ ? ($1) : () } keys %sub) |
2101 | if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/; |
2102 | return sort grep /^\Q$text/, values %INC # files |
477ea2b1 |
2103 | if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/; |
08a4aec0 |
2104 | return sort map {($_, db_complete($_ . "::", "V ", 2))} |
2105 | grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages |
2106 | if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/; |
2107 | return sort map {($_, db_complete($_ . "::", "V ", 2))} |
2108 | grep !/^main::/, |
2109 | grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'} |
2110 | # packages |
2111 | if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ |
2112 | and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1; |
477ea2b1 |
2113 | if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files |
2114 | # We may want to complete to (eval 9), so $text may be wrong |
2115 | $prefix = length($1) - length($text); |
2116 | $text = $1; |
08a4aec0 |
2117 | return sort |
2118 | map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0 |
477ea2b1 |
2119 | } |
55497cff |
2120 | if ((substr $text, 0, 1) eq '&') { # subroutines |
2121 | $text = substr $text, 1; |
2122 | $prefix = "&"; |
08a4aec0 |
2123 | return sort map "$prefix$_", |
2124 | grep /^\Q$text/, |
2125 | (keys %sub), |
2126 | (map { /$search/ ? ($1) : () } |
2127 | keys %sub); |
55497cff |
2128 | } |
2129 | if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package |
2130 | $pack = ($1 eq 'main' ? '' : $1) . '::'; |
2131 | $prefix = (substr $text, 0, 1) . $1 . '::'; |
2132 | $text = $2; |
2133 | my @out |
2134 | = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ; |
2135 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
2136 | return db_complete($out[0], $line, $start); |
2137 | } |
08a4aec0 |
2138 | return sort @out; |
55497cff |
2139 | } |
2140 | if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main) |
2141 | $pack = ($package eq 'main' ? '' : $package) . '::'; |
2142 | $prefix = substr $text, 0, 1; |
2143 | $text = substr $text, 1; |
2144 | my @out = map "$prefix$_", grep /^\Q$text/, |
2145 | (grep /^_?[a-zA-Z]/, keys %$pack), |
2146 | ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ; |
2147 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
2148 | return db_complete($out[0], $line, $start); |
2149 | } |
08a4aec0 |
2150 | return sort @out; |
55497cff |
2151 | } |
477ea2b1 |
2152 | if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space |
55497cff |
2153 | my @out = grep /^\Q$text/, @options; |
2154 | my $val = option_val($out[0], undef); |
2155 | my $out = '? '; |
2156 | if (not defined $val or $val =~ /[\n\r]/) { |
2157 | # Can do nothing better |
2158 | } elsif ($val =~ /\s/) { |
2159 | my $found; |
2160 | foreach $l (split //, qq/\"\'\#\|/) { |
2161 | $out = "$l$val$l ", last if (index $val, $l) == -1; |
2162 | } |
2163 | } else { |
2164 | $out = "=$val "; |
2165 | } |
2166 | # Default to value if one completion, to question if many |
a737e074 |
2167 | $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? '); |
08a4aec0 |
2168 | return sort @out; |
55497cff |
2169 | } |
a737e074 |
2170 | return $term->filename_list($text); # filenames |
55497cff |
2171 | } |
2172 | |
43aed9ee |
2173 | sub end_report { |
2174 | print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n" |
2175 | } |
4639966b |
2176 | |
55497cff |
2177 | END { |
2178 | $finished = $inhibit_exit; # So that some keys may be disabled. |
36477c24 |
2179 | # Do not stop in at_exit() and destructors on exit: |
2180 | $DB::single = !$exiting && !$runnonstop; |
2181 | DB::fake::at_exit() unless $exiting or $runnonstop; |
55497cff |
2182 | } |
2183 | |
2184 | package DB::fake; |
2185 | |
2186 | sub at_exit { |
43aed9ee |
2187 | "Debugged program terminated. Use `q' to quit or `R' to restart."; |
55497cff |
2188 | } |
2189 | |
36477c24 |
2190 | package DB; # Do not trace this 1; below! |
2191 | |
d338d6fe |
2192 | 1; |