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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 = 0.97; |
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6 | $header = "perl5db.pl patch level $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 | # $DB::sub being the called subroutine. It also inserts a BEGIN |
24 | # {require 'perl5db.pl'} before the first line. |
25 | # |
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26 | # After each `require'd file is compiled, but before it is executed, a |
27 | # call to DB::postponed(*{"_<$filename"}) is emulated. Here the |
28 | # $filename is the expanded name of the `require'd file (as found as |
29 | # value of %INC). |
30 | # |
31 | # Additional services from Perl interpreter: |
32 | # |
33 | # if caller() is called from the package DB, it provides some |
34 | # additional data. |
35 | # |
36 | # The array @{"_<$filename"} is the line-by-line contents of |
37 | # $filename. |
38 | # |
39 | # The hash %{"_<$filename"} contains breakpoints and action (it is |
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 | # |
45 | # The scalar ${"_<$filename"} contains "_<$filename". |
46 | # |
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47 | # Note that no subroutine call is possible until &DB::sub is defined |
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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 | # |
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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 | |
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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. |
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123 | # Changes: 0.97: NonStop will not stop in at_exit(). |
124 | # Option AutoTrace implemented. |
125 | # Trace printed differently if frames are printed too. |
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126 | |
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127 | #################################################################### |
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128 | |
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129 | # Needed for the statement after exec(): |
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130 | |
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131 | BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN. |
132 | local($^W) = 0; # Switch run-time warnings off during init. |
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133 | warn ( # Do not ;-) |
134 | $dumpvar::hashDepth, |
135 | $dumpvar::arrayDepth, |
136 | $dumpvar::dumpDBFiles, |
137 | $dumpvar::dumpPackages, |
138 | $dumpvar::quoteHighBit, |
139 | $dumpvar::printUndef, |
140 | $dumpvar::globPrint, |
141 | $readline::Tk_toloop, |
142 | $dumpvar::usageOnly, |
143 | @ARGS, |
144 | $Carp::CarpLevel, |
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145 | $panic, |
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146 | $second_time, |
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147 | ) if 0; |
148 | |
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149 | # Command-line + PERLLIB: |
150 | @ini_INC = @INC; |
151 | |
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152 | # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! |
153 | |
154 | $trace = $signal = $single = 0; # Uninitialized warning suppression |
155 | # (local $^W cannot help - other packages!). |
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156 | $inhibit_exit = $option{PrintRet} = 1; |
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157 | |
158 | @options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages |
159 | compactDump veryCompact quote HighBit undefPrint |
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160 | globPrint PrintRet UsageOnly frame AutoTrace |
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161 | TTY noTTY ReadLine NonStop LineInfo |
162 | recallCommand ShellBang pager tkRunning |
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163 | signalLevel warnLevel dieLevel inhibit_exit); |
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164 | |
165 | %optionVars = ( |
166 | hashDepth => \$dumpvar::hashDepth, |
167 | arrayDepth => \$dumpvar::arrayDepth, |
168 | DumpDBFiles => \$dumpvar::dumpDBFiles, |
169 | DumpPackages => \$dumpvar::dumpPackages, |
170 | HighBit => \$dumpvar::quoteHighBit, |
171 | undefPrint => \$dumpvar::printUndef, |
172 | globPrint => \$dumpvar::globPrint, |
173 | tkRunning => \$readline::Tk_toloop, |
174 | UsageOnly => \$dumpvar::usageOnly, |
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175 | frame => \$frame, |
176 | AutoTrace => \$trace, |
177 | inhibit_exit => \$inhibit_exit, |
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178 | ); |
179 | |
180 | %optionAction = ( |
181 | compactDump => \&dumpvar::compactDump, |
182 | veryCompact => \&dumpvar::veryCompact, |
183 | quote => \&dumpvar::quote, |
184 | TTY => \&TTY, |
185 | noTTY => \&noTTY, |
186 | ReadLine => \&ReadLine, |
187 | NonStop => \&NonStop, |
188 | LineInfo => \&LineInfo, |
189 | recallCommand => \&recallCommand, |
190 | ShellBang => \&shellBang, |
191 | pager => \&pager, |
192 | signalLevel => \&signalLevel, |
193 | warnLevel => \&warnLevel, |
194 | dieLevel => \&dieLevel, |
195 | ); |
196 | |
197 | %optionRequire = ( |
198 | compactDump => 'dumpvar.pl', |
199 | veryCompact => 'dumpvar.pl', |
200 | quote => 'dumpvar.pl', |
201 | ); |
202 | |
203 | # These guys may be defined in $ENV{PERL5DB} : |
204 | $rl = 1 unless defined $rl; |
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205 | $warnLevel = 1 unless defined $warnLevel; |
206 | $dieLevel = 1 unless defined $dieLevel; |
207 | $signalLevel = 1 unless defined $signalLevel; |
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208 | $pre = [] unless defined $pre; |
209 | $post = [] unless defined $post; |
210 | $pretype = [] unless defined $pretype; |
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211 | warnLevel($warnLevel); |
212 | dieLevel($dieLevel); |
213 | signalLevel($signalLevel); |
214 | &pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager; |
215 | &recallCommand("!") unless defined $prc; |
216 | &shellBang("!") unless defined $psh; |
217 | |
218 | if (-e "/dev/tty") { |
219 | $rcfile=".perldb"; |
220 | } else { |
221 | $rcfile="perldb.ini"; |
222 | } |
223 | |
224 | if (-f $rcfile) { |
225 | do "./$rcfile"; |
226 | } elsif (defined $ENV{LOGDIR} and -f "$ENV{LOGDIR}/$rcfile") { |
227 | do "$ENV{LOGDIR}/$rcfile"; |
228 | } elsif (defined $ENV{HOME} and -f "$ENV{HOME}/$rcfile") { |
229 | do "$ENV{HOME}/$rcfile"; |
230 | } |
231 | |
232 | if (defined $ENV{PERLDB_OPTS}) { |
233 | parse_options($ENV{PERLDB_OPTS}); |
234 | } |
235 | |
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236 | if (exists $ENV{PERLDB_RESTART}) { |
237 | delete $ENV{PERLDB_RESTART}; |
238 | # $restart = 1; |
239 | @hist = get_list('PERLDB_HIST'); |
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240 | %break_on_load = get_list("PERLDB_ON_LOAD"); |
241 | %postponed = get_list("PERLDB_POSTPONE"); |
242 | my @had_breakpoints= get_list("PERLDB_VISITED"); |
243 | for (0 .. $#had_breakpoints) { |
244 | %{$postponed_file{$had_breakpoints[$_]}} = get_list("PERLDB_FILE_$_"); |
54d04a52 |
245 | } |
246 | my %opt = get_list("PERLDB_OPT"); |
247 | my ($opt,$val); |
248 | while (($opt,$val) = each %opt) { |
249 | $val =~ s/[\\\']/\\$1/g; |
250 | parse_options("$opt'$val'"); |
251 | } |
252 | @INC = get_list("PERLDB_INC"); |
253 | @ini_INC = @INC; |
254 | } |
255 | |
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256 | if ($notty) { |
257 | $runnonstop = 1; |
258 | } else { |
259 | # Is Perl being run from Emacs? |
260 | $emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); |
261 | $rl = 0, shift(@main::ARGV) if $emacs; |
262 | |
263 | #require Term::ReadLine; |
264 | |
265 | if (-e "/dev/tty") { |
266 | $console = "/dev/tty"; |
267 | } elsif (-e "con") { |
268 | $console = "con"; |
269 | } else { |
270 | $console = "sys\$command"; |
271 | } |
272 | |
273 | # Around a bug: |
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274 | if (defined $ENV{OS2_SHELL} and ($emacs or $ENV{WINDOWID})) { # In OS/2 |
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275 | $console = undef; |
276 | } |
277 | |
278 | $console = $tty if defined $tty; |
279 | |
280 | if (defined $console) { |
281 | open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN"); |
282 | open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR") |
283 | || open(OUT,">&STDOUT"); # so we don't dongle stdout |
284 | } else { |
285 | open(IN,"<&STDIN"); |
286 | open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout |
287 | $console = 'STDIN/OUT'; |
288 | } |
289 | # so open("|more") can read from STDOUT and so we don't dingle stdin |
290 | $IN = \*IN; |
291 | |
292 | $OUT = \*OUT; |
293 | select($OUT); |
294 | $| = 1; # for DB::OUT |
295 | select(STDOUT); |
296 | |
297 | $LINEINFO = $OUT unless defined $LINEINFO; |
298 | $lineinfo = $console unless defined $lineinfo; |
299 | |
300 | $| = 1; # for real STDOUT |
301 | |
302 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
303 | unless ($runnonstop) { |
304 | print $OUT "\nLoading DB routines from $header\n"; |
305 | print $OUT ("Emacs support ", |
306 | $emacs ? "enabled" : "available", |
307 | ".\n"); |
308 | print $OUT "\nEnter h or `h h' for help.\n\n"; |
309 | } |
310 | } |
311 | |
312 | @ARGS = @ARGV; |
313 | for (@args) { |
314 | s/\'/\\\'/g; |
315 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
316 | } |
317 | |
318 | if (defined &afterinit) { # May be defined in $rcfile |
319 | &afterinit(); |
320 | } |
321 | |
322 | ############################################################ Subroutines |
323 | |
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324 | sub DB { |
36477c24 |
325 | # _After_ the perl program is compiled, $single is set to 1: |
326 | if ($single and not $second_time++) { |
327 | if ($runnonstop) { # Disable until signal |
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328 | for ($i=0; $i <= $#stack; ) { |
329 | $stack[$i++] &= ~1; |
330 | } |
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331 | $single = 0; |
36477c24 |
332 | # return; # Would not print trace! |
54d04a52 |
333 | } |
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334 | } |
36477c24 |
335 | $runnonstop = 0 if $single or $signal; # Disable it if interactive. |
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336 | &save; |
d338d6fe |
337 | ($package, $filename, $line) = caller; |
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338 | $filename_ini = $filename; |
d338d6fe |
339 | $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . |
340 | "package $package;"; # this won't let them modify, alas |
341 | local(*dbline) = "::_<$filename"; |
342 | $max = $#dbline; |
343 | if (($stop,$action) = split(/\0/,$dbline{$line})) { |
344 | if ($stop eq '1') { |
345 | $signal |= 1; |
54d04a52 |
346 | } elsif ($stop) { |
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347 | $evalarg = "\$DB::signal |= do {$stop;}"; &eval; |
348 | $dbline{$line} =~ s/;9($|\0)/$1/; |
349 | } |
350 | } |
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351 | my $was_signal = $signal; |
352 | $signal = 0; |
353 | if ($single || $trace || $was_signal) { |
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354 | $term || &setterm; |
355 | if ($emacs) { |
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356 | $position = "\032\032$filename:$line:0\n"; |
357 | print $LINEINFO $position; |
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358 | } else { |
359 | $sub =~ s/\'/::/; |
360 | $prefix = $sub =~ /::/ ? "" : "${'package'}::"; |
361 | $prefix .= "$sub($filename:"; |
362 | $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); |
363 | if (length($prefix) > 30) { |
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364 | $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; |
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365 | $prefix = ""; |
366 | $infix = ":\t"; |
367 | } else { |
368 | $infix = "):\t"; |
54d04a52 |
369 | $position = "$prefix$line$infix$dbline[$line]$after"; |
36477c24 |
370 | } |
371 | if ($frame) { |
372 | print $LINEINFO ' ' x $#stack, "$line:\t$dbline[$line]$after"; |
373 | } else { |
54d04a52 |
374 | print $LINEINFO $position; |
d338d6fe |
375 | } |
376 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi |
377 | last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; |
36477c24 |
378 | last if $signal; |
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379 | $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); |
54d04a52 |
380 | $incr_pos = "$prefix$i$infix$dbline[$i]$after"; |
54d04a52 |
381 | $position .= $incr_pos; |
36477c24 |
382 | if ($frame) { |
383 | print $LINEINFO ' ' x $#stack, "$i:\t$dbline[$i]$after"; |
384 | } else { |
385 | print $LINEINFO $incr_pos; |
386 | } |
d338d6fe |
387 | } |
388 | } |
389 | } |
390 | $evalarg = $action, &eval if $action; |
36477c24 |
391 | if ($single || $was_signal) { |
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392 | local $level = $level + 1; |
55497cff |
393 | map {$evalarg = $_, &eval} @$pre; |
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394 | print $OUT $#stack . " levels deep in subroutine calls!\n" |
395 | if $single & 4; |
396 | $start = $line; |
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397 | @typeahead = @$pretype, @typeahead; |
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398 | CMD: |
399 | while (($term || &setterm), |
54d04a52 |
400 | defined ($cmd=&readline(" DB" . ('<' x $level) . |
401 | ($#hist+1) . ('>' x $level) . |
402 | " "))) { |
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403 | $single = 0; |
404 | $signal = 0; |
405 | $cmd =~ s/\\$/\n/ && do { |
54d04a52 |
406 | $cmd .= &readline(" cont: "); |
d338d6fe |
407 | redo CMD; |
408 | }; |
55497cff |
409 | $cmd =~ /^q$/ && ($exiting = 1) && exit 0; |
d338d6fe |
410 | $cmd =~ /^$/ && ($cmd = $laststep); |
411 | push(@hist,$cmd) if length($cmd) > 1; |
412 | PIPE: { |
413 | ($i) = split(/\s+/,$cmd); |
414 | eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i}; |
415 | $cmd =~ /^h$/ && do { |
416 | print $OUT $help; |
417 | next CMD; }; |
418 | $cmd =~ /^h\s+h$/ && do { |
419 | print $OUT $summary; |
420 | next CMD; }; |
421 | $cmd =~ /^h\s+(\S)$/ && do { |
422 | my $asked = "\Q$1"; |
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423 | if ($help =~ /^$asked/m) { |
424 | while ($help =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/mg) { |
d338d6fe |
425 | print $OUT $1; |
55497cff |
426 | } |
d338d6fe |
427 | } else { |
428 | print $OUT "`$asked' is not a debugger command.\n"; |
429 | } |
430 | next CMD; }; |
431 | $cmd =~ /^t$/ && do { |
432 | $trace = !$trace; |
433 | print $OUT "Trace = ".($trace?"on":"off")."\n"; |
434 | next CMD; }; |
435 | $cmd =~ /^S(\s+(!)?(.+))?$/ && do { |
436 | $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; |
437 | foreach $subname (sort(keys %sub)) { |
438 | if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { |
439 | print $OUT $subname,"\n"; |
440 | } |
441 | } |
442 | next CMD; }; |
ee971a18 |
443 | $cmd =~ /^v$/ && do { |
444 | list_versions(); next CMD}; |
d338d6fe |
445 | $cmd =~ s/^X\b/V $package/; |
446 | $cmd =~ /^V$/ && do { |
447 | $cmd = "V $package"; }; |
448 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { |
449 | local ($savout) = select($OUT); |
450 | $packname = $1; |
451 | @vars = split(' ',$2); |
452 | do 'dumpvar.pl' unless defined &main::dumpvar; |
453 | if (defined &main::dumpvar) { |
54d04a52 |
454 | local $frame = 0; |
ee971a18 |
455 | local $doret = -2; |
d338d6fe |
456 | &main::dumpvar($packname,@vars); |
457 | } else { |
458 | print $OUT "dumpvar.pl not available.\n"; |
459 | } |
460 | select ($savout); |
461 | next CMD; }; |
462 | $cmd =~ s/^x\b/ / && do { # So that will be evaled |
463 | $onetimeDump = 1; }; |
464 | $cmd =~ /^f\b\s*(.*)/ && do { |
465 | $file = $1; |
466 | if (!$file) { |
467 | print $OUT "The old f command is now the r command.\n"; |
468 | print $OUT "The new f command switches filenames.\n"; |
469 | next CMD; |
470 | } |
471 | if (!defined $main::{'_<' . $file}) { |
472 | if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ |
473 | $file = substr($try,2); |
474 | print "\n$file:\n"; |
475 | }} |
476 | } |
477 | if (!defined $main::{'_<' . $file}) { |
478 | print $OUT "There's no code here matching $file.\n"; |
479 | next CMD; |
480 | } elsif ($file ne $filename) { |
481 | *dbline = "::_<$file"; |
482 | $max = $#dbline; |
483 | $filename = $file; |
484 | $start = 1; |
485 | $cmd = "l"; |
486 | } }; |
487 | $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do { |
488 | $subname = $1; |
489 | $subname =~ s/\'/::/; |
490 | $subname = "main::".$subname unless $subname =~ /::/; |
491 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
492 | @pieces = split(/:/,$sub{$subname}); |
493 | $subrange = pop @pieces; |
494 | $file = join(':', @pieces); |
495 | if ($file ne $filename) { |
496 | *dbline = "::_<$file"; |
497 | $max = $#dbline; |
498 | $filename = $file; |
499 | } |
500 | if ($subrange) { |
501 | if (eval($subrange) < -$window) { |
502 | $subrange =~ s/-.*/+/; |
503 | } |
504 | $cmd = "l $subrange"; |
505 | } else { |
506 | print $OUT "Subroutine $subname not found.\n"; |
507 | next CMD; |
508 | } }; |
54d04a52 |
509 | $cmd =~ /^\.$/ && do { |
510 | $start = $line; |
511 | $filename = $filename_ini; |
512 | *dbline = "::_<$filename"; |
513 | $max = $#dbline; |
514 | print $LINEINFO $position; |
515 | next CMD }; |
d338d6fe |
516 | $cmd =~ /^w\b\s*(\d*)$/ && do { |
517 | $incr = $window - 1; |
518 | $start = $1 if $1; |
519 | $start -= $preview; |
54d04a52 |
520 | #print $OUT 'l ' . $start . '-' . ($start + $incr); |
d338d6fe |
521 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
522 | $cmd =~ /^-$/ && do { |
523 | $incr = $window - 1; |
524 | $cmd = 'l ' . ($start-$window*2) . '+'; }; |
525 | $cmd =~ /^l$/ && do { |
526 | $incr = $window - 1; |
527 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
528 | $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { |
529 | $start = $1 if $1; |
530 | $incr = $2; |
531 | $incr = $window - 1 unless $incr; |
532 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
54d04a52 |
533 | $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
534 | $end = (!defined $2) ? $max : ($4 ? $4 : $2); |
d338d6fe |
535 | $end = $max if $end > $max; |
536 | $i = $2; |
537 | $i = $line if $i eq '.'; |
538 | $i = 1 if $i < 1; |
539 | if ($emacs) { |
540 | print $OUT "\032\032$filename:$i:0\n"; |
541 | $i = $end; |
542 | } else { |
543 | for (; $i <= $end; $i++) { |
54d04a52 |
544 | ($stop,$action) = split(/\0/, $dbline{$i}); |
545 | $arrow = ($i==$line |
546 | and $filename eq $filename_ini) |
547 | ? '==>' |
36477c24 |
548 | : ($dbline[$i]+0 ? ':' : ' ') ; |
54d04a52 |
549 | $arrow .= 'b' if $stop; |
550 | $arrow .= 'a' if $action; |
551 | print $OUT "$i$arrow\t", $dbline[$i]; |
d338d6fe |
552 | last if $signal; |
553 | } |
554 | } |
555 | $start = $i; # remember in case they want more |
556 | $start = $max if $start > $max; |
557 | next CMD; }; |
558 | $cmd =~ /^D$/ && do { |
55497cff |
559 | print $OUT "Deleting all breakpoints...\n"; |
560 | my $file; |
561 | for $file (keys %had_breakpoints) { |
562 | local *dbline = "::_<$file"; |
563 | my $max = $#dbline; |
564 | my $was; |
565 | |
d338d6fe |
566 | for ($i = 1; $i <= $max ; $i++) { |
567 | if (defined $dbline{$i}) { |
568 | $dbline{$i} =~ s/^[^\0]+//; |
569 | if ($dbline{$i} =~ s/^\0?$//) { |
570 | delete $dbline{$i}; |
571 | } |
572 | } |
573 | } |
55497cff |
574 | } |
575 | undef %postponed; |
576 | undef %postponed_file; |
577 | undef %break_on_load; |
578 | undef %had_breakpoints; |
579 | next CMD; }; |
d338d6fe |
580 | $cmd =~ /^L$/ && do { |
55497cff |
581 | my $file; |
582 | for $file (keys %had_breakpoints) { |
583 | local *dbline = "::_<$file"; |
584 | my $max = $#dbline; |
585 | my $was; |
586 | |
d338d6fe |
587 | for ($i = 1; $i <= $max; $i++) { |
588 | if (defined $dbline{$i}) { |
55497cff |
589 | print "$file:\n" unless $was++; |
590 | print $OUT " $i:\t", $dbline[$i]; |
d338d6fe |
591 | ($stop,$action) = split(/\0/, $dbline{$i}); |
55497cff |
592 | print $OUT " break if (", $stop, ")\n" |
d338d6fe |
593 | if $stop; |
55497cff |
594 | print $OUT " action: ", $action, "\n" |
d338d6fe |
595 | if $action; |
596 | last if $signal; |
597 | } |
598 | } |
55497cff |
599 | } |
600 | if (%postponed) { |
601 | print $OUT "Postponed breakpoints in subroutines:\n"; |
602 | my $subname; |
603 | for $subname (keys %postponed) { |
604 | print $OUT " $subname\t$postponed{$subname}\n"; |
605 | last if $signal; |
606 | } |
607 | } |
608 | my @have = map { # Combined keys |
609 | keys %{$postponed_file{$_}} |
610 | } keys %postponed_file; |
611 | if (@have) { |
612 | print $OUT "Postponed breakpoints in files:\n"; |
613 | my ($file, $line); |
614 | for $file (keys %postponed_file) { |
615 | my %db = %{$postponed_file{$file}}; |
616 | next unless keys %db; |
617 | print $OUT " $file:\n"; |
618 | for $line (sort {$a <=> $b} keys %db) { |
619 | print $OUT " $i:\n"; |
620 | my ($stop,$action) = split(/\0/, $db{$line}); |
621 | print $OUT " break if (", $stop, ")\n" |
622 | if $stop; |
623 | print $OUT " action: ", $action, "\n" |
624 | if $action; |
625 | last if $signal; |
626 | } |
627 | last if $signal; |
628 | } |
629 | } |
630 | if (%break_on_load) { |
631 | print $OUT "Breakpoints on load:\n"; |
632 | my $file; |
633 | for $file (keys %break_on_load) { |
634 | print $OUT " $file\n"; |
635 | last if $signal; |
636 | } |
637 | } |
638 | next CMD; }; |
639 | $cmd =~ /^b\b\s*load\b\s*(.*)/ && do { |
640 | my $file = $1; |
641 | { |
642 | $break_on_load{$file} = 1; |
643 | $break_on_load{$::INC{$file}} = 1 if $::INC{$file}; |
644 | $file .= '.pm', redo unless $file =~ /\./; |
645 | } |
646 | $had_breakpoints{$file} = 1; |
647 | print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n"; |
648 | next CMD; }; |
649 | $cmd =~ /^b\b\s*postpone\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
650 | my $cond = $2 || '1'; |
651 | my $subname = $1; |
652 | $subname =~ s/\'/::/; |
653 | $subname = "${'package'}::" . $subname |
654 | unless $subname =~ /::/; |
655 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
656 | $postponed{$subname} = "break +0 if $cond"; |
d338d6fe |
657 | next CMD; }; |
658 | $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { |
659 | $subname = $1; |
660 | $cond = $2 || '1'; |
661 | $subname =~ s/\'/::/; |
662 | $subname = "${'package'}::" . $subname |
663 | unless $subname =~ /::/; |
664 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
665 | # Filename below can contain ':' |
666 | ($file,$i) = ($sub{$subname} =~ /^(.*):(.*)$/); |
667 | $i += 0; |
668 | if ($i) { |
669 | $filename = $file; |
670 | *dbline = "::_<$filename"; |
55497cff |
671 | $had_breakpoints{$filename} = 1; |
d338d6fe |
672 | $max = $#dbline; |
673 | ++$i while $dbline[$i] == 0 && $i < $max; |
674 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
675 | } else { |
676 | print $OUT "Subroutine $subname not found.\n"; |
677 | } |
678 | next CMD; }; |
679 | $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { |
680 | $i = ($1?$1:$line); |
681 | $cond = $2 || '1'; |
682 | if ($dbline[$i] == 0) { |
683 | print $OUT "Line $i not breakable.\n"; |
684 | } else { |
55497cff |
685 | $had_breakpoints{$filename} = 1; |
d338d6fe |
686 | $dbline{$i} =~ s/^[^\0]*/$cond/; |
687 | } |
688 | next CMD; }; |
689 | $cmd =~ /^d\b\s*(\d+)?/ && do { |
690 | $i = ($1?$1:$line); |
691 | $dbline{$i} =~ s/^[^\0]*//; |
692 | delete $dbline{$i} if $dbline{$i} eq ''; |
693 | next CMD; }; |
694 | $cmd =~ /^A$/ && do { |
55497cff |
695 | my $file; |
696 | for $file (keys %had_breakpoints) { |
697 | local *dbline = "::_<$file"; |
698 | my $max = $#dbline; |
699 | my $was; |
700 | |
d338d6fe |
701 | for ($i = 1; $i <= $max ; $i++) { |
702 | if (defined $dbline{$i}) { |
703 | $dbline{$i} =~ s/\0[^\0]*//; |
704 | delete $dbline{$i} if $dbline{$i} eq ''; |
705 | } |
706 | } |
55497cff |
707 | } |
708 | next CMD; }; |
d338d6fe |
709 | $cmd =~ /^O\s*$/ && do { |
710 | for (@options) { |
711 | &dump_option($_); |
712 | } |
713 | next CMD; }; |
714 | $cmd =~ /^O\s*(\S.*)/ && do { |
715 | parse_options($1); |
716 | next CMD; }; |
55497cff |
717 | $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE |
718 | push @$pre, action($1); |
719 | next CMD; }; |
720 | $cmd =~ /^>>\s*(.*)/ && do { |
721 | push @$post, action($1); |
722 | next CMD; }; |
d338d6fe |
723 | $cmd =~ /^<\s*(.*)/ && do { |
55497cff |
724 | $pre = [], next CMD unless $1; |
725 | $pre = [action($1)]; |
d338d6fe |
726 | next CMD; }; |
727 | $cmd =~ /^>\s*(.*)/ && do { |
55497cff |
728 | $post = [], next CMD unless $1; |
729 | $post = [action($1)]; |
730 | next CMD; }; |
731 | $cmd =~ /^\{\{\s*(.*)/ && do { |
732 | push @$pretype, $1; |
733 | next CMD; }; |
734 | $cmd =~ /^\{\s*(.*)/ && do { |
735 | $pretype = [], next CMD unless $1; |
736 | $pretype = [$1]; |
d338d6fe |
737 | next CMD; }; |
738 | $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do { |
739 | $i = $1; $j = $3; |
740 | if ($dbline[$i] == 0) { |
741 | print $OUT "Line $i may not have an action.\n"; |
742 | } else { |
743 | $dbline{$i} =~ s/\0[^\0]*//; |
744 | $dbline{$i} .= "\0" . action($j); |
745 | } |
746 | next CMD; }; |
747 | $cmd =~ /^n$/ && do { |
4639966b |
748 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
749 | $single = 2; |
750 | $laststep = $cmd; |
751 | last CMD; }; |
752 | $cmd =~ /^s$/ && do { |
4639966b |
753 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
754 | $single = 1; |
755 | $laststep = $cmd; |
756 | last CMD; }; |
54d04a52 |
757 | $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { |
4639966b |
758 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
759 | $i = $1; |
54d04a52 |
760 | if ($i =~ /\D/) { # subroutine name |
761 | ($file,$i) = ($sub{$i} =~ /^(.*):(.*)$/); |
762 | $i += 0; |
763 | if ($i) { |
764 | $filename = $file; |
765 | *dbline = "::_<$filename"; |
55497cff |
766 | $had_breakpoints{$filename}++; |
54d04a52 |
767 | $max = $#dbline; |
768 | ++$i while $dbline[$i] == 0 && $i < $max; |
769 | } else { |
770 | print $OUT "Subroutine $subname not found.\n"; |
771 | next CMD; |
772 | } |
773 | } |
d338d6fe |
774 | if ($i) { |
775 | if ($dbline[$i] == 0) { |
776 | print $OUT "Line $i not breakable.\n"; |
777 | next CMD; |
778 | } |
779 | $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. |
780 | } |
781 | for ($i=0; $i <= $#stack; ) { |
782 | $stack[$i++] &= ~1; |
783 | } |
784 | last CMD; }; |
785 | $cmd =~ /^r$/ && do { |
4639966b |
786 | end_report(), next CMD if $finished and $level <= 1; |
d338d6fe |
787 | $stack[$#stack] |= 1; |
ee971a18 |
788 | $doret = $option{PrintRet} ? $#stack - 1 : -2; |
d338d6fe |
789 | last CMD; }; |
54d04a52 |
790 | $cmd =~ /^R$/ && do { |
55497cff |
791 | print $OUT "Warning: some settings and command-line options may be lost!\n"; |
54d04a52 |
792 | my (@script, @flags, $cl); |
793 | push @flags, '-w' if $ini_warn; |
794 | # Put all the old includes at the start to get |
795 | # the same debugger. |
796 | for (@ini_INC) { |
797 | push @flags, '-I', $_; |
798 | } |
799 | # Arrange for setting the old INC: |
800 | set_list("PERLDB_INC", @ini_INC); |
801 | if ($0 eq '-e') { |
802 | for (1..$#{'::_<-e'}) { # The first line is PERL5DB |
803 | chomp ($cl = $ {'::_<-e'}[$_]); |
804 | push @script, '-e', $cl; |
805 | } |
806 | } else { |
807 | @script = $0; |
808 | } |
809 | set_list("PERLDB_HIST", |
810 | $term->Features->{getHistory} |
811 | ? $term->GetHistory : @hist); |
55497cff |
812 | my @had_breakpoints = keys %had_breakpoints; |
813 | set_list("PERLDB_VISITED", @had_breakpoints); |
54d04a52 |
814 | set_list("PERLDB_OPT", %option); |
55497cff |
815 | set_list("PERLDB_ON_LOAD", %break_on_load); |
816 | my @hard; |
817 | for (0 .. $#had_breakpoints) { |
818 | my $file = $had_breakpoints[$_]; |
819 | *dbline = "::_<$file"; |
820 | next unless %dbline or %{$postponed_file{$file}}; |
821 | (push @hard, $file), next |
822 | if $file =~ /^\(eval \d+\)$/; |
823 | my @add; |
824 | @add = %{$postponed_file{$file}} |
825 | if %{$postponed_file{$file}}; |
826 | set_list("PERLDB_FILE_$_", %dbline, @add); |
827 | } |
828 | for (@hard) { # Yes, really-really... |
829 | # Find the subroutines in this eval |
830 | *dbline = "::_<$_"; |
831 | my ($quoted, $sub, %subs, $line) = quotemeta $_; |
832 | for $sub (keys %sub) { |
833 | next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/; |
834 | $subs{$sub} = [$1, $2]; |
835 | } |
836 | unless (%subs) { |
837 | print $OUT |
838 | "No subroutines in $_, ignoring breakpoints.\n"; |
839 | next; |
840 | } |
841 | LINES: for $line (keys %dbline) { |
842 | # One breakpoint per sub only: |
843 | my ($offset, $sub, $found); |
844 | SUBS: for $sub (keys %subs) { |
845 | if ($subs{$sub}->[1] >= $line # Not after the subroutine |
846 | and (not defined $offset # Not caught |
847 | or $offset < 0 )) { # or badly caught |
848 | $found = $sub; |
849 | $offset = $line - $subs{$sub}->[0]; |
850 | $offset = "+$offset", last SUBS if $offset >= 0; |
851 | } |
852 | } |
853 | if (defined $offset) { |
854 | $postponed{$found} = |
855 | "break $offset if $dbline{$line}"; |
856 | } else { |
857 | print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n"; |
858 | } |
859 | } |
54d04a52 |
860 | } |
55497cff |
861 | set_list("PERLDB_POSTPONE", %postponed); |
54d04a52 |
862 | $ENV{PERLDB_RESTART} = 1; |
863 | #print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS"; |
864 | exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS; |
865 | print $OUT "exec failed: $!\n"; |
866 | last CMD; }; |
d338d6fe |
867 | $cmd =~ /^T$/ && do { |
36477c24 |
868 | print_trace($OUT, 1); # skip DB |
d338d6fe |
869 | next CMD; }; |
870 | $cmd =~ /^\/(.*)$/ && do { |
871 | $inpat = $1; |
872 | $inpat =~ s:([^\\])/$:$1:; |
873 | if ($inpat ne "") { |
874 | eval '$inpat =~ m'."\a$inpat\a"; |
875 | if ($@ ne "") { |
876 | print $OUT "$@"; |
877 | next CMD; |
878 | } |
879 | $pat = $inpat; |
880 | } |
881 | $end = $start; |
882 | eval ' |
883 | for (;;) { |
884 | ++$start; |
885 | $start = 1 if ($start > $max); |
886 | last if ($start == $end); |
887 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
888 | if ($emacs) { |
889 | print $OUT "\032\032$filename:$start:0\n"; |
890 | } else { |
891 | print $OUT "$start:\t", $dbline[$start], "\n"; |
892 | } |
893 | last; |
894 | } |
895 | } '; |
896 | print $OUT "/$pat/: not found\n" if ($start == $end); |
897 | next CMD; }; |
898 | $cmd =~ /^\?(.*)$/ && do { |
899 | $inpat = $1; |
900 | $inpat =~ s:([^\\])\?$:$1:; |
901 | if ($inpat ne "") { |
902 | eval '$inpat =~ m'."\a$inpat\a"; |
903 | if ($@ ne "") { |
904 | print $OUT "$@"; |
905 | next CMD; |
906 | } |
907 | $pat = $inpat; |
908 | } |
909 | $end = $start; |
910 | eval ' |
911 | for (;;) { |
912 | --$start; |
913 | $start = $max if ($start <= 0); |
914 | last if ($start == $end); |
915 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
916 | if ($emacs) { |
917 | print $OUT "\032\032$filename:$start:0\n"; |
918 | } else { |
919 | print $OUT "$start:\t", $dbline[$start], "\n"; |
920 | } |
921 | last; |
922 | } |
923 | } '; |
924 | print $OUT "?$pat?: not found\n" if ($start == $end); |
925 | next CMD; }; |
926 | $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { |
927 | pop(@hist) if length($cmd) > 1; |
928 | $i = $1 ? ($#hist-($2?$2:1)) : ($2?$2:$#hist); |
929 | $cmd = $hist[$i] . "\n"; |
930 | print $OUT $cmd; |
931 | redo CMD; }; |
55497cff |
932 | $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do { |
ee971a18 |
933 | &system($1); |
d338d6fe |
934 | next CMD; }; |
935 | $cmd =~ /^$rc([^$rc].*)$/ && do { |
936 | $pat = "^$1"; |
937 | pop(@hist) if length($cmd) > 1; |
938 | for ($i = $#hist; $i; --$i) { |
939 | last if $hist[$i] =~ /$pat/; |
940 | } |
941 | if (!$i) { |
942 | print $OUT "No such command!\n\n"; |
943 | next CMD; |
944 | } |
945 | $cmd = $hist[$i] . "\n"; |
946 | print $OUT $cmd; |
947 | redo CMD; }; |
948 | $cmd =~ /^$sh$/ && do { |
949 | &system($ENV{SHELL}||"/bin/sh"); |
950 | next CMD; }; |
ee971a18 |
951 | $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do { |
952 | &system($ENV{SHELL}||"/bin/sh","-c",$1); |
d338d6fe |
953 | next CMD; }; |
954 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { |
955 | $end = $2?($#hist-$2):0; |
956 | $hist = 0 if $hist < 0; |
957 | for ($i=$#hist; $i>$end; $i--) { |
958 | print $OUT "$i: ",$hist[$i],"\n" |
959 | unless $hist[$i] =~ /^.?$/; |
960 | }; |
961 | next CMD; }; |
b9b857e2 |
962 | $cmd =~ s/^p$/print {\$DB::OUT} \$_/; |
963 | $cmd =~ s/^p\b/print {\$DB::OUT} /; |
d338d6fe |
964 | $cmd =~ /^=/ && do { |
965 | if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { |
966 | $alias{$k}="s~$k~$v~"; |
967 | print $OUT "$k = $v\n"; |
968 | } elsif ($cmd =~ /^=\s*$/) { |
969 | foreach $k (sort keys(%alias)) { |
970 | if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { |
971 | print $OUT "$k = $v\n"; |
972 | } else { |
973 | print $OUT "$k\t$alias{$k}\n"; |
974 | }; |
975 | }; |
976 | }; |
977 | next CMD; }; |
978 | $cmd =~ /^\|\|?\s*[^|]/ && do { |
979 | if ($pager =~ /^\|/) { |
980 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
981 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
982 | } else { |
983 | open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); |
984 | } |
985 | unless ($piped=open(OUT,$pager)) { |
986 | &warn("Can't pipe output to `$pager'"); |
987 | if ($pager =~ /^\|/) { |
988 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
989 | open(STDOUT,">&SAVEOUT") |
990 | || &warn("Can't restore STDOUT"); |
991 | close(SAVEOUT); |
992 | } else { |
993 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
994 | } |
995 | next CMD; |
996 | } |
77fb7b16 |
997 | $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/ |
d338d6fe |
998 | && "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}; |
999 | $selected= select(OUT); |
1000 | $|= 1; |
1001 | select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; |
1002 | $cmd =~ s/^\|+\s*//; |
1003 | redo PIPE; }; |
1004 | # XXX Local variants do not work! |
1005 | $cmd =~ s/^t\s/\$DB::trace = 1;\n/; |
1006 | $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; |
1007 | $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; |
1008 | } # PIPE: |
d338d6fe |
1009 | $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; |
1010 | if ($onetimeDump) { |
1011 | $onetimeDump = undef; |
1012 | } else { |
1013 | print $OUT "\n"; |
1014 | } |
1015 | } continue { # CMD: |
1016 | if ($piped) { |
1017 | if ($pager =~ /^\|/) { |
1018 | $?= 0; close(OUT) || &warn("Can't close DB::OUT"); |
1019 | &warn( "Pager `$pager' failed: ", |
1020 | ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), |
1021 | ( $? & 128 ) ? " (core dumped)" : "", |
1022 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; |
1023 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
1024 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
77fb7b16 |
1025 | $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq \&DB::catch; |
d338d6fe |
1026 | # Will stop ignoring SIGPIPE if done like nohup(1) |
1027 | # does SIGINT but Perl doesn't give us a choice. |
1028 | } else { |
1029 | open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); |
1030 | } |
1031 | close(SAVEOUT); |
1032 | select($selected), $selected= "" unless $selected eq ""; |
1033 | $piped= ""; |
1034 | } |
1035 | } # CMD: |
55497cff |
1036 | map {$evalarg = $_; &eval} @$post; |
d338d6fe |
1037 | } # if ($single || $signal) |
1038 | ($@, $!, $,, $/, $\, $^W) = @saved; |
1039 | (); |
1040 | } |
1041 | |
1042 | # The following code may be executed now: |
1043 | # BEGIN {warn 4} |
1044 | |
1045 | sub sub { |
ee971a18 |
1046 | my ($al, $ret, @ret) = ""; |
1047 | if ($sub =~ /::AUTOLOAD$/) { |
1048 | $al = " for $ {$` . '::AUTOLOAD'}"; |
1049 | } |
36477c24 |
1050 | ($frame & 4 |
1051 | ? ( (print $LINEINFO ' ' x $#stack, "in "), |
1052 | # Why -1? But it works! :-( |
1053 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
1054 | : print $LINEINFO ' ' x $#stack, "entering $sub$al\n") if $frame; |
d338d6fe |
1055 | push(@stack, $single); |
1056 | $single &= 1; |
1057 | $single |= 4 if $#stack == $deep; |
1058 | if (wantarray) { |
1059 | @ret = &$sub; |
1060 | $single |= pop(@stack); |
ee971a18 |
1061 | print ($OUT "list context return from $sub:\n"), dumpit( \@ret ), |
1062 | $doret = -2 if $doret eq $#stack; |
36477c24 |
1063 | ($frame & 4 |
1064 | ? ( (print $LINEINFO ' ' x $#stack, "out "), |
1065 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
1066 | : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2; |
d338d6fe |
1067 | @ret; |
1068 | } else { |
1069 | $ret = &$sub; |
1070 | $single |= pop(@stack); |
ee971a18 |
1071 | print ($OUT "scalar context return from $sub: "), dumpit( $ret ), |
1072 | $doret = -2 if $doret eq $#stack; |
36477c24 |
1073 | ($frame & 4 |
1074 | ? ( (print $LINEINFO ' ' x $#stack, "out "), |
1075 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
1076 | : print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2; |
d338d6fe |
1077 | $ret; |
1078 | } |
1079 | } |
1080 | |
1081 | sub save { |
1082 | @saved = ($@, $!, $,, $/, $\, $^W); |
1083 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; |
1084 | } |
1085 | |
1086 | # The following takes its argument via $evalarg to preserve current @_ |
1087 | |
1088 | sub eval { |
1089 | my @res; |
1090 | { |
1091 | local (@stack) = @stack; # guard against recursive debugging |
1092 | my $otrace = $trace; |
1093 | my $osingle = $single; |
1094 | my $od = $^D; |
1095 | @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug |
1096 | $trace = $otrace; |
1097 | $single = $osingle; |
1098 | $^D = $od; |
1099 | } |
1100 | my $at = $@; |
36477c24 |
1101 | local $saved[0]; # Preserve the old value of $@ |
d338d6fe |
1102 | eval "&DB::save"; |
1103 | if ($at) { |
1104 | print $OUT $at; |
1105 | } elsif ($onetimeDump) { |
1106 | dumpit(\@res); |
1107 | } |
1108 | } |
1109 | |
55497cff |
1110 | sub postponed_sub { |
1111 | my $subname = shift; |
1112 | if ($postponed{$subname} =~ s/break\s([+-]?\d+)\s+if\s//) { |
1113 | my $offset = $1 || 0; |
1114 | # Filename below can contain ':' |
1115 | my ($file,$i) = ($sub{$subname} =~ /^(.*):(\d+)-.*$/); |
1116 | $i += $offset; |
1117 | if ($i) { |
1118 | local *dbline = "::_<$file"; |
1119 | local $^W = 0; # != 0 is magical below |
1120 | $had_breakpoints{$file}++; |
1121 | my $max = $#dbline; |
1122 | ++$i until $dbline[$i] != 0 or $i >= $max; |
1123 | $dbline{$i} = delete $postponed{$subname}; |
1124 | } else { |
1125 | print $OUT "Subroutine $subname not found.\n"; |
1126 | } |
1127 | return; |
1128 | } |
36477c24 |
1129 | #print $OUT "In postponed_sub for `$subname'.\n"; |
55497cff |
1130 | } |
1131 | |
1132 | sub postponed { |
1133 | return &postponed_sub |
1134 | unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled. |
1135 | # Cannot be done before the file is compiled |
1136 | local *dbline = shift; |
1137 | my $filename = $dbline; |
1138 | $filename =~ s/^_<//; |
36477c24 |
1139 | $signal = 1, print $OUT "'$filename' loaded...\n" |
1140 | if $break_on_load{$filename}; |
1141 | print $LINEINFO ' ' x $#stack, "Package $filename.\n" if $frame; |
55497cff |
1142 | return unless %{$postponed_file{$filename}}; |
1143 | $had_breakpoints{$filename}++; |
1144 | #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic |
1145 | my $key; |
1146 | for $key (keys %{$postponed_file{$filename}}) { |
1147 | $dbline{$key} = $ {$postponed_file{$filename}}{$key}; |
54d04a52 |
1148 | } |
55497cff |
1149 | undef %{$postponed_file{$filename}}; |
54d04a52 |
1150 | } |
1151 | |
d338d6fe |
1152 | sub dumpit { |
1153 | local ($savout) = select($OUT); |
ee971a18 |
1154 | my $osingle = $single; |
1155 | my $otrace = $trace; |
1156 | $single = $trace = 0; |
1157 | local $frame = 0; |
1158 | local $doret = -2; |
1159 | unless (defined &main::dumpValue) { |
1160 | do 'dumpvar.pl'; |
1161 | } |
d338d6fe |
1162 | if (defined &main::dumpValue) { |
1163 | &main::dumpValue(shift); |
1164 | } else { |
1165 | print $OUT "dumpvar.pl not available.\n"; |
1166 | } |
ee971a18 |
1167 | $single = $osingle; |
1168 | $trace = $otrace; |
d338d6fe |
1169 | select ($savout); |
1170 | } |
1171 | |
36477c24 |
1172 | # Tied method do not create a context, so may get wrong message: |
1173 | |
55497cff |
1174 | sub print_trace { |
1175 | my $fh = shift; |
36477c24 |
1176 | my @sub = dump_trace($_[0] + 1, $_[1]); |
1177 | my $short = $_[2]; # Print short report, next one for sub name |
55497cff |
1178 | for ($i=0; $i <= $#sub; $i++) { |
1179 | last if $signal; |
1180 | local $" = ', '; |
1181 | my $args = defined $sub[$i]{args} |
1182 | ? "(@{ $sub[$i]{args} })" |
1183 | : '' ; |
36477c24 |
1184 | my $file = $sub[$i]{file}; |
1185 | $file = $file eq '-e' ? $file : "file `$file'" unless $short; |
1186 | if ($short) { |
1187 | my $sub = @_ >= 4 ? $_[3] : $sub[$i]{sub}; |
1188 | print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n"; |
1189 | } else { |
1190 | print $fh "$sub[$i]{context} = $sub[$i]{sub}$args" . |
1191 | " called from $file" . |
1192 | " line $sub[$i]{line}\n"; |
1193 | } |
55497cff |
1194 | } |
1195 | } |
1196 | |
1197 | sub dump_trace { |
1198 | my $skip = shift; |
36477c24 |
1199 | my $count = shift || 1e9; |
1200 | $skip++; |
1201 | $count += $skip; |
55497cff |
1202 | my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context); |
1203 | for ($i = $skip; |
36477c24 |
1204 | $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i); |
55497cff |
1205 | $i++) { |
1206 | @a = (); |
1207 | for $arg (@args) { |
1208 | $_ = "$arg"; |
1209 | s/([\'\\])/\\$1/g; |
1210 | s/([^\0]*)/'$1'/ |
1211 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; |
1212 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
1213 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
1214 | push(@a, $_); |
1215 | } |
36477c24 |
1216 | $context = $context ? '@' : '$'; |
55497cff |
1217 | $args = $h ? [@a] : undef; |
1218 | $e =~ s/\n\s*\;\s*\Z// if $e; |
1219 | $e =~ s/[\\\']/\\$1/g if $e; |
1220 | if ($r) { |
1221 | $sub = "require '$e'"; |
1222 | } elsif (defined $r) { |
1223 | $sub = "eval '$e'"; |
1224 | } elsif ($sub eq '(eval)') { |
1225 | $sub = "eval {...}"; |
1226 | } |
1227 | push(@sub, {context => $context, sub => $sub, args => $args, |
1228 | file => $file, line => $line}); |
1229 | last if $signal; |
1230 | } |
1231 | @sub; |
1232 | } |
1233 | |
d338d6fe |
1234 | sub action { |
1235 | my $action = shift; |
1236 | while ($action =~ s/\\$//) { |
1237 | #print $OUT "+ "; |
1238 | #$action .= "\n"; |
1239 | $action .= &gets; |
1240 | } |
1241 | $action; |
1242 | } |
1243 | |
1244 | sub gets { |
1245 | local($.); |
1246 | #<IN>; |
1247 | &readline("cont: "); |
1248 | } |
1249 | |
1250 | sub system { |
1251 | # We save, change, then restore STDIN and STDOUT to avoid fork() since |
1252 | # many non-Unix systems can do system() but have problems with fork(). |
1253 | open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN"); |
1254 | open(SAVEOUT,">&OUT") || &warn("Can't save STDOUT"); |
1255 | open(STDIN,"<&IN") || &warn("Can't redirect STDIN"); |
1256 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
1257 | system(@_); |
1258 | open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN"); |
1259 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
1260 | close(SAVEIN); close(SAVEOUT); |
1261 | &warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")", |
1262 | ( $? & 128 ) ? " (core dumped)" : "", |
1263 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; |
1264 | $?; |
1265 | } |
1266 | |
1267 | sub setterm { |
54d04a52 |
1268 | local $frame = 0; |
ee971a18 |
1269 | local $doret = -2; |
1270 | local @stack = @stack; # Prevent growth by failing `use'. |
1271 | eval { require Term::ReadLine } or die $@; |
d338d6fe |
1272 | if ($notty) { |
1273 | if ($tty) { |
1274 | open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!"; |
1275 | open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!"; |
1276 | $IN = \*IN; |
1277 | $OUT = \*OUT; |
1278 | my $sel = select($OUT); |
1279 | $| = 1; |
1280 | select($sel); |
1281 | } else { |
1282 | eval "require Term::Rendezvous;" or die $@; |
1283 | my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; |
1284 | my $term_rv = new Term::Rendezvous $rv; |
1285 | $IN = $term_rv->IN; |
1286 | $OUT = $term_rv->OUT; |
1287 | } |
1288 | } |
1289 | if (!$rl) { |
1290 | $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; |
1291 | } else { |
1292 | $term = new Term::ReadLine 'perldb', $IN, $OUT; |
1293 | |
1294 | $readline::rl_basic_word_break_characters .= "[:" |
1295 | if defined $readline::rl_basic_word_break_characters |
1296 | and index($readline::rl_basic_word_break_characters, ":") == -1; |
55497cff |
1297 | $readline::rl_special_prefixes = |
1298 | $readline::rl_special_prefixes = '$@&%'; |
1299 | $readline::rl_completer_word_break_characters = |
1300 | $readline::rl_completer_word_break_characters . '$@&%'; |
1301 | $readline::rl_completion_function = |
1302 | $readline::rl_completion_function = \&db_complete; |
d338d6fe |
1303 | } |
1304 | $LINEINFO = $OUT unless defined $LINEINFO; |
1305 | $lineinfo = $console unless defined $lineinfo; |
1306 | $term->MinLine(2); |
54d04a52 |
1307 | if ($term->Features->{setHistory} and "@hist" ne "?") { |
1308 | $term->SetHistory(@hist); |
1309 | } |
d338d6fe |
1310 | } |
1311 | |
1312 | sub readline { |
54d04a52 |
1313 | if (@typeahead) { |
1314 | my $left = @typeahead; |
1315 | my $got = shift @typeahead; |
1316 | print $OUT "auto(-$left)", shift, $got, "\n"; |
1317 | $term->AddHistory($got) |
1318 | if length($got) > 1 and defined $term->Features->{addHistory}; |
1319 | return $got; |
1320 | } |
d338d6fe |
1321 | local $frame = 0; |
ee971a18 |
1322 | local $doret = -2; |
d338d6fe |
1323 | $term->readline(@_); |
1324 | } |
1325 | |
1326 | sub dump_option { |
1327 | my ($opt, $val)= @_; |
55497cff |
1328 | $val = option_val($opt,'N/A'); |
1329 | $val =~ s/([\\\'])/\\$1/g; |
1330 | printf $OUT "%20s = '%s'\n", $opt, $val; |
1331 | } |
1332 | |
1333 | sub option_val { |
1334 | my ($opt, $default)= @_; |
1335 | my $val; |
d338d6fe |
1336 | if (defined $optionVars{$opt} |
1337 | and defined $ {$optionVars{$opt}}) { |
1338 | $val = $ {$optionVars{$opt}}; |
1339 | } elsif (defined $optionAction{$opt} |
1340 | and defined &{$optionAction{$opt}}) { |
1341 | $val = &{$optionAction{$opt}}(); |
1342 | } elsif (defined $optionAction{$opt} |
1343 | and not defined $option{$opt} |
1344 | or defined $optionVars{$opt} |
1345 | and not defined $ {$optionVars{$opt}}) { |
55497cff |
1346 | $val = $default; |
d338d6fe |
1347 | } else { |
1348 | $val = $option{$opt}; |
1349 | } |
55497cff |
1350 | $val |
d338d6fe |
1351 | } |
1352 | |
1353 | sub parse_options { |
1354 | local($_)= @_; |
1355 | while ($_ ne "") { |
1356 | s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last; |
1357 | my ($opt,$sep) = ($1,$2); |
1358 | my $val; |
1359 | if ("?" eq $sep) { |
1360 | print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last |
1361 | if /^\S/; |
1362 | #&dump_option($opt); |
1363 | } elsif ($sep !~ /\S/) { |
1364 | $val = "1"; |
1365 | } elsif ($sep eq "=") { |
1366 | s/^(\S*)($|\s+)//; |
1367 | $val = $1; |
1368 | } else { #{ to "let some poor schmuck bounce on the % key in B<vi>." |
1369 | my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #} |
1370 | s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or |
1371 | print($OUT "Unclosed option value `$opt$sep$_'\n"), last; |
1372 | $val = $1; |
1373 | $val =~ s/\\([\\$end])/$1/g; |
1374 | } |
1375 | my ($option); |
1376 | my $matches = |
1377 | grep( /^\Q$opt/ && ($option = $_), @options ); |
1378 | $matches = grep( /^\Q$opt/i && ($option = $_), @options ) |
1379 | unless $matches; |
1380 | print $OUT "Unknown option `$opt'\n" unless $matches; |
1381 | print $OUT "Ambiguous option `$opt'\n" if $matches > 1; |
1382 | $option{$option} = $val if $matches == 1 and defined $val; |
ee971a18 |
1383 | eval "local \$frame = 0; local \$doret = -2; |
1384 | require '$optionRequire{$option}'" |
d338d6fe |
1385 | if $matches == 1 and defined $optionRequire{$option} and defined $val; |
1386 | $ {$optionVars{$option}} = $val |
1387 | if $matches == 1 |
1388 | and defined $optionVars{$option} and defined $val; |
1389 | & {$optionAction{$option}} ($val) |
1390 | if $matches == 1 |
1391 | and defined $optionAction{$option} |
1392 | and defined &{$optionAction{$option}} and defined $val; |
1393 | &dump_option($option) if $matches == 1 && $OUT ne \*STDERR; # Not $rcfile |
1394 | s/^\s+//; |
1395 | } |
1396 | } |
1397 | |
54d04a52 |
1398 | sub set_list { |
1399 | my ($stem,@list) = @_; |
1400 | my $val; |
1401 | $ENV{"$ {stem}_n"} = @list; |
1402 | for $i (0 .. $#list) { |
1403 | $val = $list[$i]; |
1404 | $val =~ s/\\/\\\\/g; |
ee971a18 |
1405 | $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg; |
54d04a52 |
1406 | $ENV{"$ {stem}_$i"} = $val; |
1407 | } |
1408 | } |
1409 | |
1410 | sub get_list { |
1411 | my $stem = shift; |
1412 | my @list; |
1413 | my $n = delete $ENV{"$ {stem}_n"}; |
1414 | my $val; |
1415 | for $i (0 .. $n - 1) { |
1416 | $val = delete $ENV{"$ {stem}_$i"}; |
1417 | $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge; |
1418 | push @list, $val; |
1419 | } |
1420 | @list; |
1421 | } |
1422 | |
d338d6fe |
1423 | sub catch { |
1424 | $signal = 1; |
4639966b |
1425 | return; # Put nothing on the stack - malloc/free land! |
d338d6fe |
1426 | } |
1427 | |
1428 | sub warn { |
1429 | my($msg)= join("",@_); |
1430 | $msg .= ": $!\n" unless $msg =~ /\n$/; |
1431 | print $OUT $msg; |
1432 | } |
1433 | |
1434 | sub TTY { |
1435 | if ($term) { |
1436 | &warn("Too late to set TTY!\n") if @_; |
1437 | } else { |
1438 | $tty = shift if @_; |
1439 | } |
1440 | $tty or $console; |
1441 | } |
1442 | |
1443 | sub noTTY { |
1444 | if ($term) { |
1445 | &warn("Too late to set noTTY!\n") if @_; |
1446 | } else { |
1447 | $notty = shift if @_; |
1448 | } |
1449 | $notty; |
1450 | } |
1451 | |
1452 | sub ReadLine { |
1453 | if ($term) { |
1454 | &warn("Too late to set ReadLine!\n") if @_; |
1455 | } else { |
1456 | $rl = shift if @_; |
1457 | } |
1458 | $rl; |
1459 | } |
1460 | |
1461 | sub NonStop { |
1462 | if ($term) { |
1463 | &warn("Too late to set up NonStop mode!\n") if @_; |
1464 | } else { |
1465 | $runnonstop = shift if @_; |
1466 | } |
1467 | $runnonstop; |
1468 | } |
1469 | |
1470 | sub pager { |
1471 | if (@_) { |
1472 | $pager = shift; |
1473 | $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; |
1474 | } |
1475 | $pager; |
1476 | } |
1477 | |
1478 | sub shellBang { |
1479 | if (@_) { |
1480 | $sh = quotemeta shift; |
1481 | $sh .= "\\b" if $sh =~ /\w$/; |
1482 | } |
1483 | $psh = $sh; |
1484 | $psh =~ s/\\b$//; |
1485 | $psh =~ s/\\(.)/$1/g; |
1486 | &sethelp; |
1487 | $psh; |
1488 | } |
1489 | |
1490 | sub recallCommand { |
1491 | if (@_) { |
1492 | $rc = quotemeta shift; |
1493 | $rc .= "\\b" if $rc =~ /\w$/; |
1494 | } |
1495 | $prc = $rc; |
1496 | $prc =~ s/\\b$//; |
1497 | $prc =~ s/\\(.)/$1/g; |
1498 | &sethelp; |
1499 | $prc; |
1500 | } |
1501 | |
1502 | sub LineInfo { |
1503 | return $lineinfo unless @_; |
1504 | $lineinfo = shift; |
1505 | my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; |
1506 | $emacs = ($stream =~ /^\|/); |
1507 | open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); |
1508 | $LINEINFO = \*LINEINFO; |
1509 | my $save = select($LINEINFO); |
1510 | $| = 1; |
1511 | select($save); |
1512 | $lineinfo; |
1513 | } |
1514 | |
ee971a18 |
1515 | sub list_versions { |
1516 | my %version; |
1517 | my $file; |
1518 | for (keys %INC) { |
1519 | $file = $_; |
1520 | s,\.p[lm]$,,i ; |
1521 | s,/,::,g ; |
1522 | s/^perl5db$/DB/; |
55497cff |
1523 | s/^Term::ReadLine::readline$/readline/; |
ee971a18 |
1524 | if (defined $ { $_ . '::VERSION' }) { |
1525 | $version{$file} = "$ { $_ . '::VERSION' } from "; |
1526 | } |
1527 | $version{$file} .= $INC{$file}; |
1528 | } |
1529 | do 'dumpvar.pl' unless defined &main::dumpValue; |
1530 | if (defined &main::dumpValue) { |
1531 | local $frame = 0; |
1532 | &main::dumpValue(\%version); |
1533 | } else { |
1534 | print $OUT "dumpvar.pl not available.\n"; |
1535 | } |
1536 | } |
1537 | |
d338d6fe |
1538 | sub sethelp { |
1539 | $help = " |
1540 | T Stack trace. |
1541 | s [expr] Single step [in expr]. |
1542 | n [expr] Next, steps over subroutine calls [in expr]. |
1543 | <CR> Repeat last n or s command. |
1544 | r Return from current subroutine. |
55497cff |
1545 | c [line|sub] Continue; optionally inserts a one-time-only breakpoint |
1546 | at the specified position. |
d338d6fe |
1547 | l min+incr List incr+1 lines starting at min. |
1548 | l min-max List lines min through max. |
1549 | l line List single line. |
1550 | l subname List first window of lines from subroutine. |
1551 | l List next window of lines. |
1552 | - List previous window of lines. |
1553 | w [line] List window around line. |
54d04a52 |
1554 | . Return to the executed line. |
d338d6fe |
1555 | f filename Switch to viewing filename. |
1556 | /pattern/ Search forwards for pattern; final / is optional. |
1557 | ?pattern? Search backwards for pattern; final ? is optional. |
36477c24 |
1558 | L List all breakpoints and actions. |
d338d6fe |
1559 | S [[!]pattern] List subroutine names [not] matching pattern. |
1560 | t Toggle trace mode. |
1561 | t expr Trace through execution of expr. |
1562 | b [line] [condition] |
1563 | Set breakpoint; line defaults to the current execution line; |
1564 | condition breaks if it evaluates to true, defaults to '1'. |
1565 | b subname [condition] |
1566 | Set breakpoint at first line of subroutine. |
55497cff |
1567 | b load filename Set breakpoint on `require'ing the given file. |
1568 | b postpone subname [condition] |
1569 | Set breakpoint at first line of subroutine after |
1570 | it is compiled. |
d338d6fe |
1571 | d [line] Delete the breakpoint for line. |
1572 | D Delete all breakpoints. |
1573 | a [line] command |
1574 | Set an action to be done before the line is executed. |
1575 | Sequence is: check for breakpoint, print line if necessary, |
1576 | do action, prompt user if breakpoint or step, evaluate line. |
1577 | A Delete all actions. |
1578 | V [pkg [vars]] List some (default all) variables in package (default current). |
1579 | Use ~pattern and !pattern for positive and negative regexps. |
1580 | X [vars] Same as \"V currentpackage [vars]\". |
1581 | x expr Evals expression in array context, dumps the result. |
1582 | O [opt[=val]] [opt\"val\"] [opt?]... |
1583 | Set or query values of options. val defaults to 1. opt can |
1584 | be abbreviated. Several options can be listed. |
1585 | recallCommand, ShellBang: chars used to recall command or spawn shell; |
1586 | pager: program for output of \"|cmd\"; |
36477c24 |
1587 | tkRunning: run Tk while prompting (with ReadLine); |
1588 | signalLevel warnLevel dieLevel: level of verbosity; |
1589 | inhibit_exit Allows stepping off the end of the script. |
d338d6fe |
1590 | The following options affect what happens with V, X, and x commands: |
1591 | arrayDepth, hashDepth: print only first N elements ('' for all); |
1592 | compactDump, veryCompact: change style of array and hash dump; |
1593 | globPrint: whether to print contents of globs; |
1594 | DumpDBFiles: dump arrays holding debugged files; |
1595 | DumpPackages: dump symbol tables of packages; |
1596 | quote, HighBit, undefPrint: change style of string dump; |
d338d6fe |
1597 | Option PrintRet affects printing of return value after r command, |
1598 | frame affects printing messages on entry and exit from subroutines. |
36477c24 |
1599 | AutoTrace affects printing messages on every possible breaking point. |
d338d6fe |
1600 | During startup options are initialized from \$ENV{PERLDB_OPTS}. |
1601 | You can put additional initialization options TTY, noTTY, |
1602 | ReadLine, and NonStop there. |
55497cff |
1603 | < command Define Perl command to run before each prompt. |
1604 | << command Add to the list of Perl commands to run before each prompt. |
1605 | > command Define Perl command to run after each prompt. |
1606 | >> command Add to the list of Perl commands to run after each prompt. |
1607 | \{ commandline Define debugger command to run before each prompt. |
1608 | \{{ commandline Add to the list of debugger commands to run before each prompt. |
d338d6fe |
1609 | $prc number Redo a previous command (default previous command). |
1610 | $prc -number Redo number'th-to-last command. |
1611 | $prc pattern Redo last command that started with pattern. |
1612 | See 'O recallCommand' too. |
1613 | $psh$psh cmd Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" |
1614 | . ( $rc eq $sh ? "" : " |
1615 | $psh [cmd] Run cmd in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " |
1616 | See 'O shellBang' too. |
1617 | H -number Display last number commands (default all). |
b9b857e2 |
1618 | p expr Same as \"print {DB::OUT} expr\" in current package. |
d338d6fe |
1619 | |dbcmd Run debugger command, piping DB::OUT to current pager. |
1620 | ||dbcmd Same as |dbcmd but DB::OUT is temporarilly select()ed as well. |
1621 | \= [alias value] Define a command alias, or list current aliases. |
1622 | command Execute as a perl statement in current package. |
ee971a18 |
1623 | v Show versions of loaded modules. |
55497cff |
1624 | R Pure-man-restart of debugger, some of debugger state |
1625 | and command-line options may be lost. |
36477c24 |
1626 | Currently the following setting are preserved: |
1627 | history, breakpoints and actions, debugger Options |
1628 | and the following command-line options: -w, -I, -e. |
d338d6fe |
1629 | h [db_command] Get help [on a specific debugger command], enter |h to page. |
1630 | h h Summary of debugger commands. |
4639966b |
1631 | q or ^D Quit. Set \$DB::finished to 0 to debug global destruction. |
d338d6fe |
1632 | |
1633 | "; |
1634 | $summary = <<"END_SUM"; |
1635 | List/search source lines: Control script execution: |
1636 | l [ln|sub] List source code T Stack trace |
54d04a52 |
1637 | - or . List previous/current line s [expr] Single step [in expr] |
d338d6fe |
1638 | w [line] List around line n [expr] Next, steps over subs |
1639 | f filename View source in file <CR> Repeat last n or s |
ee971a18 |
1640 | /pattern/ ?patt? Search forw/backw r Return from subroutine |
55497cff |
1641 | v Show versions of modules c [ln|sub] Continue until position |
d338d6fe |
1642 | Debugger controls: L List break pts & actions |
1643 | O [...] Set debugger options t [expr] Toggle trace [trace expr] |
55497cff |
1644 | <[<] or {[{] [cmd] Do before prompt b [ln/event] [c] Set breakpoint |
1645 | >[>] [cmd] Do after prompt b sub [c] Set breakpoint for sub |
d338d6fe |
1646 | $prc [N|pat] Redo a previous command d [line] Delete a breakpoint |
1647 | H [-num] Display last num commands D Delete all breakpoints |
1648 | = [a val] Define/list an alias a [ln] cmd Do cmd before line |
1649 | h [db_cmd] Get help on command A Delete all actions |
1650 | |[|]dbcmd Send output to pager $psh\[$psh\] syscmd Run cmd in a subprocess |
54d04a52 |
1651 | q or ^D Quit R Attempt a restart |
d338d6fe |
1652 | Data Examination: expr Execute perl code, also see: s,n,t expr |
55497cff |
1653 | x expr Evals expression in array context, dumps the result. |
1654 | p expr Print expression (uses script's current package). |
d338d6fe |
1655 | S [[!]pat] List subroutine names [not] matching pattern |
1656 | V [Pk [Vars]] List Variables in Package. Vars can be ~pattern or !pattern. |
1657 | X [Vars] Same as \"V current_package [Vars]\". |
d338d6fe |
1658 | END_SUM |
55497cff |
1659 | # ')}}; # Fix balance of Emacs parsing |
d338d6fe |
1660 | } |
1661 | |
d338d6fe |
1662 | sub diesignal { |
54d04a52 |
1663 | local $frame = 0; |
ee971a18 |
1664 | local $doret = -2; |
77fb7b16 |
1665 | $SIG{'ABRT'} = 'DEFAULT'; |
d338d6fe |
1666 | kill 'ABRT', $$ if $panic++; |
1667 | print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue |
1668 | local $SIG{__WARN__} = ''; |
1669 | require Carp; |
1670 | local $Carp::CarpLevel = 2; # mydie + confess |
1671 | &warn(Carp::longmess("Signal @_")); |
1672 | kill 'ABRT', $$; |
1673 | } |
1674 | |
1675 | sub dbwarn { |
54d04a52 |
1676 | local $frame = 0; |
ee971a18 |
1677 | local $doret = -2; |
d338d6fe |
1678 | local $SIG{__WARN__} = ''; |
77fb7b16 |
1679 | local $SIG{__DIE__} = ''; |
1680 | eval { require Carp }; # If error/warning during compilation, |
1681 | # require may be broken. |
1682 | warn(@_, "\nPossible unrecoverable error"), warn("\nTry to decrease warnLevel `O'ption!\n"), return |
1683 | unless defined &Carp::longmess; |
d338d6fe |
1684 | #&warn("Entering dbwarn\n"); |
1685 | my ($mysingle,$mytrace) = ($single,$trace); |
1686 | $single = 0; $trace = 0; |
1687 | my $mess = Carp::longmess(@_); |
1688 | ($single,$trace) = ($mysingle,$mytrace); |
1689 | #&warn("Warning in dbwarn\n"); |
1690 | &warn($mess); |
1691 | #&warn("Exiting dbwarn\n"); |
1692 | } |
1693 | |
1694 | sub dbdie { |
54d04a52 |
1695 | local $frame = 0; |
ee971a18 |
1696 | local $doret = -2; |
d338d6fe |
1697 | local $SIG{__DIE__} = ''; |
1698 | local $SIG{__WARN__} = ''; |
1699 | my $i = 0; my $ineval = 0; my $sub; |
1700 | #&warn("Entering dbdie\n"); |
1701 | if ($dieLevel != 2) { |
1702 | while ((undef,undef,undef,$sub) = caller(++$i)) { |
1703 | $ineval = 1, last if $sub eq '(eval)'; |
1704 | } |
1705 | { |
1706 | local $SIG{__WARN__} = \&dbwarn; |
1707 | &warn(@_) if $dieLevel > 2; # Ineval is false during destruction? |
1708 | } |
1709 | #&warn("dieing quietly in dbdie\n") if $ineval and $dieLevel < 2; |
1710 | die @_ if $ineval and $dieLevel < 2; |
1711 | } |
77fb7b16 |
1712 | eval { require Carp }; # If error/warning during compilation, |
1713 | # require may be broken. |
1714 | die(@_, "\nUnrecoverable error") unless defined &Carp::longmess; |
d338d6fe |
1715 | # We do not want to debug this chunk (automatic disabling works |
1716 | # inside DB::DB, but not in Carp). |
1717 | my ($mysingle,$mytrace) = ($single,$trace); |
1718 | $single = 0; $trace = 0; |
1719 | my $mess = Carp::longmess(@_); |
1720 | ($single,$trace) = ($mysingle,$mytrace); |
1721 | #&warn("dieing loudly in dbdie\n"); |
1722 | die $mess; |
1723 | } |
1724 | |
d338d6fe |
1725 | sub warnLevel { |
1726 | if (@_) { |
1727 | $prevwarn = $SIG{__WARN__} unless $warnLevel; |
1728 | $warnLevel = shift; |
1729 | if ($warnLevel) { |
0b7ed949 |
1730 | $SIG{__WARN__} = \&DB::dbwarn; |
d338d6fe |
1731 | } else { |
1732 | $SIG{__WARN__} = $prevwarn; |
1733 | } |
1734 | } |
1735 | $warnLevel; |
1736 | } |
1737 | |
1738 | sub dieLevel { |
1739 | if (@_) { |
1740 | $prevdie = $SIG{__DIE__} unless $dieLevel; |
1741 | $dieLevel = shift; |
1742 | if ($dieLevel) { |
0b7ed949 |
1743 | $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2; |
1744 | #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2; |
d338d6fe |
1745 | print $OUT "Stack dump during die enabled", |
1746 | ( $dieLevel == 1 ? " outside of evals" : ""), ".\n"; |
1747 | print $OUT "Dump printed too.\n" if $dieLevel > 2; |
1748 | } else { |
1749 | $SIG{__DIE__} = $prevdie; |
1750 | print $OUT "Default die handler restored.\n"; |
1751 | } |
1752 | } |
1753 | $dieLevel; |
1754 | } |
1755 | |
1756 | sub signalLevel { |
1757 | if (@_) { |
1758 | $prevsegv = $SIG{SEGV} unless $signalLevel; |
1759 | $prevbus = $SIG{BUS} unless $signalLevel; |
1760 | $signalLevel = shift; |
1761 | if ($signalLevel) { |
77fb7b16 |
1762 | $SIG{SEGV} = \&DB::diesignal; |
1763 | $SIG{BUS} = \&DB::diesignal; |
d338d6fe |
1764 | } else { |
1765 | $SIG{SEGV} = $prevsegv; |
1766 | $SIG{BUS} = $prevbus; |
1767 | } |
1768 | } |
1769 | $signalLevel; |
1770 | } |
1771 | |
1772 | # The following BEGIN is very handy if debugger goes havoc, debugging debugger? |
1773 | |
1774 | BEGIN { # This does not compile, alas. |
1775 | $IN = \*STDIN; # For bugs before DB::OUT has been opened |
1776 | $OUT = \*STDERR; # For errors before DB::OUT has been opened |
1777 | $sh = '!'; |
1778 | $rc = ','; |
1779 | @hist = ('?'); |
1780 | $deep = 100; # warning if stack gets this deep |
1781 | $window = 10; |
1782 | $preview = 3; |
1783 | $sub = ''; |
77fb7b16 |
1784 | $SIG{INT} = \&DB::catch; |
ee971a18 |
1785 | # This may be enabled to debug debugger: |
1786 | #$warnLevel = 1 unless defined $warnLevel; |
1787 | #$dieLevel = 1 unless defined $dieLevel; |
1788 | #$signalLevel = 1 unless defined $signalLevel; |
d338d6fe |
1789 | |
1790 | $db_stop = 0; # Compiler warning |
1791 | $db_stop = 1 << 30; |
1792 | $level = 0; # Level of recursive debugging |
55497cff |
1793 | # @stack and $doret are needed in sub sub, which is called for DB::postponed. |
1794 | # Triggers bug (?) in perl is we postpone this until runtime: |
1795 | @postponed = @stack = (0); |
1796 | $doret = -2; |
1797 | $frame = 0; |
d338d6fe |
1798 | } |
1799 | |
54d04a52 |
1800 | BEGIN {$^W = $ini_warn;} # Switch warnings back |
1801 | |
d338d6fe |
1802 | #use Carp; # This did break, left for debuggin |
1803 | |
55497cff |
1804 | sub db_complete { |
1805 | my($text, $line, $start) = @_; |
1806 | my ($itext, $prefix, $pack) = $text; |
1807 | |
1808 | if ((substr $text, 0, 1) eq '&') { # subroutines |
1809 | $text = substr $text, 1; |
1810 | $prefix = "&"; |
1811 | return map "$prefix$_", grep /^\Q$text/, keys %sub; |
1812 | } |
1813 | if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package |
1814 | $pack = ($1 eq 'main' ? '' : $1) . '::'; |
1815 | $prefix = (substr $text, 0, 1) . $1 . '::'; |
1816 | $text = $2; |
1817 | my @out |
1818 | = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ; |
1819 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
1820 | return db_complete($out[0], $line, $start); |
1821 | } |
1822 | return @out; |
1823 | } |
1824 | if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main) |
1825 | $pack = ($package eq 'main' ? '' : $package) . '::'; |
1826 | $prefix = substr $text, 0, 1; |
1827 | $text = substr $text, 1; |
1828 | my @out = map "$prefix$_", grep /^\Q$text/, |
1829 | (grep /^_?[a-zA-Z]/, keys %$pack), |
1830 | ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ; |
1831 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
1832 | return db_complete($out[0], $line, $start); |
1833 | } |
1834 | return @out; |
1835 | } |
1836 | return grep /^\Q$text/, (keys %sub), qw(postpone load) # subroutines |
1837 | if (substr $line, 0, $start) =~ /^[bl]\s+(postpone\s+)?$/; |
1838 | return grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # packages |
1839 | if (substr $line, 0, $start) =~ /^V\s+$/; |
1840 | if ((substr $line, 0, $start) =~ /^O\b.*\s$/) { # Options after a space |
1841 | my @out = grep /^\Q$text/, @options; |
1842 | my $val = option_val($out[0], undef); |
1843 | my $out = '? '; |
1844 | if (not defined $val or $val =~ /[\n\r]/) { |
1845 | # Can do nothing better |
1846 | } elsif ($val =~ /\s/) { |
1847 | my $found; |
1848 | foreach $l (split //, qq/\"\'\#\|/) { |
1849 | $out = "$l$val$l ", last if (index $val, $l) == -1; |
1850 | } |
1851 | } else { |
1852 | $out = "=$val "; |
1853 | } |
1854 | # Default to value if one completion, to question if many |
1855 | $readline::rl_completer_terminator_character |
1856 | = $readline::rl_completer_terminator_character |
1857 | = (@out == 1 ? $out : '? '); |
1858 | return @out; |
1859 | } |
1860 | return &readline::rl_filename_list($text); # filenames |
1861 | } |
1862 | |
4639966b |
1863 | sub end_report { print $OUT "Use `q' to quit and `R' to restart. `h q' for details.\n" } |
1864 | |
55497cff |
1865 | END { |
1866 | $finished = $inhibit_exit; # So that some keys may be disabled. |
36477c24 |
1867 | # Do not stop in at_exit() and destructors on exit: |
1868 | $DB::single = !$exiting && !$runnonstop; |
1869 | DB::fake::at_exit() unless $exiting or $runnonstop; |
55497cff |
1870 | } |
1871 | |
1872 | package DB::fake; |
1873 | |
1874 | sub at_exit { |
1875 | "Debuggee terminated. Use `q' to quit and `R' to restart."; |
1876 | } |
1877 | |
36477c24 |
1878 | package DB; # Do not trace this 1; below! |
1879 | |
d338d6fe |
1880 | 1; |