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