| Commit | Line | Data |
|---|
| a687059c |
1 | package DB; |
| 2 | |
| 03a14243 |
3 | $header = '$Header: perldb.pl,v 3.0.1.1 89/10/26 23:14:02 lwall Locked $'; |
| a687059c |
4 | # |
| 5 | # This file is automatically included if you do perl -d. |
| 6 | # It's probably not useful to include this yourself. |
| 7 | # |
| 8 | # Perl supplies the values for @line and %sub. It effectively inserts |
| 9 | # a do DB'DB(<linenum>); in front of every place that can |
| 10 | # have a breakpoint. It also inserts a do 'perldb.pl' before the first line. |
| 11 | # |
| 12 | # $Log: perldb.pl,v $ |
| 03a14243 |
13 | # Revision 3.0.1.1 89/10/26 23:14:02 lwall |
| 14 | # patch1: RCS expanded an unintended $Header in lib/perldb.pl |
| 15 | # |
| a687059c |
16 | # Revision 3.0 89/10/18 15:19:46 lwall |
| 17 | # 3.0 baseline |
| 18 | # |
| 19 | # Revision 2.0 88/06/05 00:09:45 root |
| 20 | # Baseline version 2.0. |
| 21 | # |
| 22 | # |
| 23 | |
| 24 | open(IN,"/dev/tty"); # so we don't dingle stdin |
| 25 | open(OUT,">/dev/tty"); # so we don't dongle stdout |
| 26 | select(OUT); |
| 27 | $| = 1; # for DB'OUT |
| 28 | select(STDOUT); |
| 29 | $| = 1; # for real STDOUT |
| 30 | |
| 03a14243 |
31 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
| a687059c |
32 | print OUT "\nLoading DB from $header\n\n"; |
| 33 | |
| 34 | sub DB { |
| 35 | local($. ,$@, $!, $[, $,, $/, $\); |
| 36 | $[ = 0; $, = ""; $/ = "\n"; $\ = ""; |
| 37 | ($line) = @_; |
| 38 | if ($stop[$line]) { |
| 39 | if ($stop eq '1') { |
| 40 | $signal |= 1; |
| 41 | } |
| 42 | else { |
| 43 | package main; |
| 44 | $DB'signal |= eval $DB'stop[$DB'line]; print DB'OUT $@; |
| 45 | $DB'stop[$DB'line] =~ s/;9$//; |
| 46 | } |
| 47 | } |
| 48 | if ($single || $trace || $signal) { |
| 49 | print OUT "$sub($line):\t",$line[$line]; |
| 50 | for ($i = $line + 1; $i <= $max && $line[$i] == 0; ++$i) { |
| 51 | last if $line[$i] =~ /^\s*(}|#|\n)/; |
| 52 | print OUT "$sub($i):\t",$line[$i]; |
| 53 | } |
| 54 | } |
| 55 | if ($action[$line]) { |
| 56 | package main; |
| 57 | eval $DB'action[$DB'line]; print DB'OUT $@; |
| 58 | } |
| 59 | if ($single || $signal) { |
| 60 | if ($pre) { |
| 61 | package main; |
| 62 | eval $DB'pre; print DB'OUT $@; |
| 63 | } |
| 64 | print OUT $#stack . " levels deep in subroutine calls!\n" |
| 65 | if $single & 4; |
| 66 | $start = $line; |
| 67 | while ((print OUT " DB<", $#hist+1, "> "), $cmd=<IN>) { |
| 68 | $single = 0; |
| 69 | $signal = 0; |
| 70 | $cmd eq '' && exit 0; |
| 71 | chop($cmd); |
| 72 | $cmd =~ /^q$/ && exit 0; |
| 73 | $cmd =~ /^$/ && ($cmd = $laststep); |
| 74 | push(@hist,$cmd) if length($cmd) > 1; |
| 75 | ($i) = split(/\s+/,$cmd); |
| 76 | eval "\$cmd =~ $alias{$i}", print OUT $@ if $alias{$i}; |
| 77 | $cmd =~ /^h$/ && do { |
| 78 | print OUT " |
| 79 | T Stack trace. |
| 80 | s Single step. |
| 81 | n Next, steps over subroutine calls. |
| 82 | f Finish current subroutine. |
| 83 | c [line] Continue; optionally inserts a one-time-only breakpoint |
| 84 | at the specified line. |
| 85 | <CR> Repeat last n or s. |
| 86 | l min+incr List incr+1 lines starting at min. |
| 87 | l min-max List lines. |
| 88 | l line List line; |
| 89 | l List next window. |
| 90 | - List previous window. |
| 91 | w line List window around line. |
| 92 | l subname List subroutine. |
| 93 | /pattern/ Search forwards for pattern; final / is optional. |
| 94 | ?pattern? Search backwards for pattern. |
| 95 | L List breakpoints and actions. |
| 96 | S List subroutine names. |
| 97 | t Toggle trace mode. |
| 98 | b [line] [condition] |
| 99 | Set breakpoint; line defaults to the current execution line; |
| 100 | condition breaks if it evaluates to true, defaults to \'1\'. |
| 101 | b subname [condition] |
| 102 | Set breakpoint at first line of subroutine. |
| 103 | d [line] Delete breakpoint. |
| 104 | D Delete all breakpoints. |
| 105 | a [line] command |
| 106 | Set an action to be done before the line is executed. |
| 107 | Sequence is: check for breakpoint, print line if necessary, |
| 108 | do action, prompt user if breakpoint or step, evaluate line. |
| 109 | A Delete all actions. |
| 110 | V package List all variables and values in package (default main). |
| 111 | < command Define command before prompt. |
| 112 | > command Define command after prompt. |
| 113 | ! number Redo command (default previous command). |
| 114 | ! -number Redo number\'th to last command. |
| 115 | H -number Display last number commands (default all). |
| 116 | q or ^D Quit. |
| 117 | p expr Same as \"package main; print DB'OUT expr\". |
| 118 | command Execute as a perl statement. |
| 119 | |
| 120 | "; |
| 121 | next; }; |
| 122 | $cmd =~ /^t$/ && do { |
| 123 | $trace = !$trace; |
| 124 | print OUT "Trace = ".($trace?"on":"off")."\n"; |
| 125 | next; }; |
| 126 | $cmd =~ /^S$/ && do { |
| 127 | foreach $subname (sort(keys %sub)) { |
| 128 | if ($subname =~ /^main'(.*)/) { |
| 129 | print OUT $1,"\n"; |
| 130 | } |
| 131 | else { |
| 132 | print OUT $subname,"\n"; |
| 133 | } |
| 134 | } |
| 135 | next; }; |
| 136 | $cmd =~ /^V$/ && do { |
| 137 | $cmd = 'V main'; }; |
| 138 | $cmd =~ /^V\s*(['A-Za-z_]['\w]*)$/ && do { |
| 139 | $packname = $1; |
| 140 | do 'dumpvar.pl' unless defined &main'dumpvar; |
| 141 | if (defined &main'dumpvar) { |
| 142 | &main'dumpvar($packname); |
| 143 | } |
| 144 | else { |
| 145 | print DB'OUT "dumpvar.pl not available.\n"; |
| 146 | } |
| 147 | next; }; |
| 148 | $cmd =~ /^l\s*(['A-Za-z_]['\w]*)/ && do { |
| 149 | $subname = $1; |
| 150 | $subname = "main'" . $subname unless $subname =~ /'/; |
| 151 | $subrange = $sub{$subname}; |
| 152 | if ($subrange) { |
| 153 | if (eval($subrange) < -$window) { |
| 154 | $subrange =~ s/-.*/+/; |
| 155 | } |
| 156 | $cmd = "l $subrange"; |
| 157 | } else { |
| 158 | print OUT "Subroutine $1 not found.\n"; |
| 159 | next; |
| 160 | } }; |
| 161 | $cmd =~ /^w\s*(\d*)$/ && do { |
| 162 | $incr = $window - 1; |
| 163 | $start = $1 if $1; |
| 164 | $start -= $preview; |
| 165 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
| 166 | $cmd =~ /^-$/ && do { |
| 167 | $incr = $window - 1; |
| 168 | $cmd = 'l ' . ($start-$window*2) . '+'; }; |
| 169 | $cmd =~ /^l$/ && do { |
| 170 | $incr = $window - 1; |
| 171 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
| 172 | $cmd =~ /^l\s*(\d*)\+(\d*)$/ && do { |
| 173 | $start = $1 if $1; |
| 174 | $incr = $2; |
| 175 | $incr = $window - 1 unless $incr; |
| 176 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
| 177 | $cmd =~ /^l\s*(([\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
| 178 | $end = (!$2) ? $max : ($4 ? $4 : $2); |
| 179 | $end = $max if $end > $max; |
| 180 | $i = $2; |
| 181 | $i = $line if $i eq '.'; |
| 182 | $i = 1 if $i < 1; |
| 183 | for (; $i <= $end; $i++) { |
| 184 | print OUT "$i:\t", $line[$i]; |
| 185 | last if $signal; |
| 186 | } |
| 187 | $start = $i; # remember in case they want more |
| 188 | $start = $max if $start > $max; |
| 189 | next; }; |
| 190 | $cmd =~ /^D$/ && do { |
| 191 | print OUT "Deleting all breakpoints...\n"; |
| 192 | for ($i = 1; $i <= $max ; $i++) { |
| 193 | $stop[$i] = 0; |
| 194 | } |
| 195 | next; }; |
| 196 | $cmd =~ /^L$/ && do { |
| 197 | for ($i = 1; $i <= $max; $i++) { |
| 198 | if ($stop[$i] || $action[$i]) { |
| 199 | print OUT "$i:\t", $line[$i]; |
| 200 | print OUT " break if (", $stop[$i], ")\n" |
| 201 | if $stop[$i]; |
| 202 | print OUT " action: ", $action[$i], "\n" |
| 203 | if $action[$i]; |
| 204 | last if $signal; |
| 205 | } |
| 206 | } |
| 207 | next; }; |
| 208 | $cmd =~ /^b\s*(['A-Za-z_]['\w]*)\s*(.*)/ && do { |
| 209 | $subname = $1; |
| 210 | $subname = "main'" . $subname unless $subname =~ /'/; |
| 211 | ($i) = split(/-/, $sub{$subname}); |
| 212 | if ($i) { |
| 213 | ++$i while $line[$i] == 0 && $i < $#line; |
| 214 | $stop[$i] = $2 ? $2 : 1; |
| 215 | } else { |
| 216 | print OUT "Subroutine $1 not found.\n"; |
| 217 | } |
| 218 | next; }; |
| 219 | $cmd =~ /^b\s*(\d*)\s*(.*)/ && do { |
| 220 | $i = ($1?$1:$line); |
| 221 | if ($line[$i] == 0) { |
| 222 | print OUT "Line $i not breakable.\n"; |
| 223 | } else { |
| 224 | $stop[$i] = $2 ? $2 : 1; |
| 225 | } |
| 226 | next; }; |
| 227 | $cmd =~ /^d\s*(\d+)?/ && do { |
| 228 | $i = ($1?$1:$line); |
| 229 | $stop[$i] = ''; |
| 230 | next; }; |
| 231 | $cmd =~ /^A$/ && do { |
| 232 | for ($i = 1; $i <= $max ; $i++) { |
| 233 | $action[$i] = ''; |
| 234 | } |
| 235 | next; }; |
| 236 | $cmd =~ /^<\s*(.*)/ && do { |
| 237 | $pre = do action($1); |
| 238 | next; }; |
| 239 | $cmd =~ /^>\s*(.*)/ && do { |
| 240 | $post = do action($1); |
| 241 | next; }; |
| 242 | $cmd =~ /^a\s*(\d+)(\s+(.*))?/ && do { |
| 243 | $i = $1; |
| 244 | if ($line[$i] == 0) { |
| 245 | print OUT "Line $i may not have an action.\n"; |
| 246 | } else { |
| 247 | $action[$i] = do action($3); |
| 248 | } |
| 249 | next; }; |
| 250 | $cmd =~ /^n$/ && do { |
| 251 | $single = 2; |
| 252 | $laststep = $cmd; |
| 253 | last; }; |
| 254 | $cmd =~ /^s$/ && do { |
| 255 | $single = 1; |
| 256 | $laststep = $cmd; |
| 257 | last; }; |
| 258 | $cmd =~ /^c\s*(\d*)\s*$/ && do { |
| 259 | $i = $1; |
| 260 | if ($i) { |
| 261 | if ($line[$i] == 0) { |
| 262 | print OUT "Line $i not breakable.\n"; |
| 263 | next; |
| 264 | } |
| 265 | $stop[$i] .= ";9"; # add one-time-only b.p. |
| 266 | } |
| 267 | for ($i=0; $i <= $#stack; ) { |
| 268 | $stack[$i++] &= ~1; |
| 269 | } |
| 270 | last; }; |
| 271 | $cmd =~ /^f$/ && do { |
| 272 | $stack[$#stack] |= 2; |
| 273 | last; }; |
| 274 | $cmd =~ /^T$/ && do { |
| 275 | for ($i=0; $i <= $#sub; ) { |
| 276 | print OUT $sub[$i++], "\n"; |
| 277 | last if $signal; |
| 278 | } |
| 279 | next; }; |
| 280 | $cmd =~ /^\/(.*)$/ && do { |
| 281 | $inpat = $1; |
| 282 | $inpat =~ s:([^\\])/$:$1:; |
| 283 | if ($inpat ne "") { |
| 284 | eval '$inpat =~ m'."\n$inpat\n"; |
| 285 | if ($@ ne "") { |
| 286 | print OUT "$@"; |
| 287 | next; |
| 288 | } |
| 289 | $pat = $inpat; |
| 290 | } |
| 291 | $end = $start; |
| 292 | eval ' |
| 293 | for (;;) { |
| 294 | ++$start; |
| 295 | $start = 1 if ($start > $max); |
| 296 | last if ($start == $end); |
| 297 | if ($line[$start] =~ m'."\n$pat\n".'i) { |
| 298 | print OUT "$start:\t", $line[$start], "\n"; |
| 299 | last; |
| 300 | } |
| 301 | } '; |
| 302 | print OUT "/$pat/: not found\n" if ($start == $end); |
| 303 | next; }; |
| 304 | $cmd =~ /^\?(.*)$/ && do { |
| 305 | $inpat = $1; |
| 306 | $inpat =~ s:([^\\])\?$:$1:; |
| 307 | if ($inpat ne "") { |
| 308 | eval '$inpat =~ m'."\n$inpat\n"; |
| 309 | if ($@ ne "") { |
| 310 | print OUT "$@"; |
| 311 | next; |
| 312 | } |
| 313 | $pat = $inpat; |
| 314 | } |
| 315 | $end = $start; |
| 316 | eval ' |
| 317 | for (;;) { |
| 318 | --$start; |
| 319 | $start = $max if ($start <= 0); |
| 320 | last if ($start == $end); |
| 321 | if ($line[$start] =~ m'."\n$pat\n".'i) { |
| 322 | print OUT "$start:\t", $line[$start], "\n"; |
| 323 | last; |
| 324 | } |
| 325 | } '; |
| 326 | print OUT "?$pat?: not found\n" if ($start == $end); |
| 327 | next; }; |
| 328 | $cmd =~ /^!+\s*(-)?(\d+)?$/ && do { |
| 329 | pop(@hist) if length($cmd) > 1; |
| 330 | $i = ($1?($#hist-($2?$2:1)):($2?$2:$#hist)); |
| 331 | $cmd = $hist[$i] . "\n"; |
| 332 | print OUT $cmd; |
| 333 | redo; }; |
| 334 | $cmd =~ /^!(.+)$/ && do { |
| 335 | $pat = "^$1"; |
| 336 | pop(@hist) if length($cmd) > 1; |
| 337 | for ($i = $#hist; $i; --$i) { |
| 338 | last if $hist[$i] =~ $pat; |
| 339 | } |
| 340 | if (!$i) { |
| 341 | print OUT "No such command!\n\n"; |
| 342 | next; |
| 343 | } |
| 344 | $cmd = $hist[$i] . "\n"; |
| 345 | print OUT $cmd; |
| 346 | redo; }; |
| 347 | $cmd =~ /^H\s*(-(\d+))?/ && do { |
| 348 | $end = $2?($#hist-$2):0; |
| 349 | $hist = 0 if $hist < 0; |
| 350 | for ($i=$#hist; $i>$end; $i--) { |
| 351 | print OUT "$i: ",$hist[$i],"\n" |
| 352 | unless $hist[$i] =~ /^.?$/; |
| 353 | }; |
| 354 | next; }; |
| 355 | $cmd =~ s/^p( .*)?$/print DB'OUT$1/; |
| 356 | { |
| 357 | package main; |
| 358 | eval $DB'cmd; |
| 359 | } |
| 360 | print OUT $@,"\n"; |
| 361 | } |
| 362 | if ($post) { |
| 363 | package main; |
| 364 | eval $DB'post; print DB'OUT $@; |
| 365 | } |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | sub action { |
| 370 | local($action) = @_; |
| 371 | while ($action =~ s/\\$//) { |
| 372 | print OUT "+ "; |
| 373 | $action .= <IN>; |
| 374 | } |
| 375 | $action; |
| 376 | } |
| 377 | |
| 378 | sub catch { |
| 379 | $signal = 1; |
| 380 | } |
| 381 | |
| 382 | sub sub { |
| 383 | push(@stack, $single); |
| 384 | $single &= 1; |
| 385 | $single |= 4 if $#stack == $deep; |
| 386 | local(@args) = @_; |
| 387 | for (@args) { |
| 388 | if (/^Stab/ && length($_) == length($_main{'_main'})) { |
| 389 | $_ = sprintf("%s",$_); |
| 390 | print "ARG: $_\n"; |
| 391 | } |
| 392 | else { |
| 393 | s/'/\\'/g; |
| 394 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
| 395 | } |
| 396 | } |
| 397 | push(@sub, $sub . '(' . join(', ', @args) . ') from ' . $line); |
| 398 | if (wantarray) { |
| 399 | @i = &$sub; |
| 400 | } |
| 401 | else { |
| 402 | $i = &$sub; |
| 403 | @i = $i; |
| 404 | } |
| 405 | --$#sub; |
| 406 | $single |= pop(@stack); |
| 407 | @i; |
| 408 | } |
| 409 | |
| 410 | $single = 1; # so it stops on first executable statement |
| 411 | $max = $#line; |
| 412 | @hist = ('?'); |
| 413 | $SIG{'INT'} = "DB'catch"; |
| 414 | $deep = 100; # warning if stack gets this deep |
| 415 | $window = 10; |
| 416 | $preview = 3; |
| 417 | |
| 418 | @stack = (0); |
| 419 | @args = @ARGV; |
| 420 | for (@args) { |
| 421 | s/'/\\'/g; |
| 422 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
| 423 | } |
| 424 | push(@sub, 'main(' . join(', ', @args) . ")" ); |
| 425 | $sub = 'main'; |
| 426 | |
| 427 | if (-f '.perldb') { |
| 428 | do './.perldb'; |
| 429 | } |
| 430 | elsif (-f "$ENV{'LOGDIR'}/.perldb") { |
| 431 | do "$ENV{'LOGDIR'}/.perldb"; |
| 432 | } |
| 433 | elsif (-f "$ENV{'HOME'}/.perldb") { |
| 434 | do "$ENV{'HOME'}/.perldb"; |
| 435 | } |
| 436 | |
| 437 | 1; |
projects / p5sagit/p5-mst-13.2.git / blame