File: prepare-ChangeLogSVN.pl

package info (click to toggle)
xserver-xorg-video-openchrome 1%3A0.3.3-1
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 3,368 kB
  • ctags: 5,693
  • sloc: ansic: 29,302; sh: 11,091; perl: 414; makefile: 195
file content (603 lines) | stat: -rw-r--r-- 18,277 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
#!/usr/bin/perl -w
# -*- Mode: perl; indent-tabs-mode: nil; c-basic-offset: 2  -*-

# Perl script to create a ChangeLog entry with names of files
# and functions from a svn diff.
#
# Darin Adler <darin@bentspoon.com>, started 20 April 2000
# Java support added by Maciej Stachowiak <mjs@eazel.com>
# Adapted for subversion by Thomas Hellstrom <unichrome-at-shipmail-dot-org>
# last updated 11 May 2005
#
# (Someone put a license in here, like maybe GPL.)
#
# TODO:
#   For new files, just say "New file" instead of listing
#     function names.
#   List functions that have been removed too.
#   Decide what a good logical order is for the changed files
#     other than a normal text "sort" (top level first?)
#     (group directories?) (.h before .c?)
#   Leave a diff file behind if asked, but in unified format.
#   Handle C++ and yacc source files too (other languages?).
#   Help merge when there are ChangeLog conflicts or if there's
#     already a partly written ChangeLog entry.
#   Add command line option to put the ChangeLog into a separate
#     file or just spew it out stdout.
#   Figure out how to allow -z options from .cvsrc to work without
#     letting other bad options work. Currently the -f disables
#     everything from the .cvsrc.
#   Add CVS version numbers for each file too (can't do that until
#     the changes are checked in, though).
#   Work around diff stupidity where deleting a function that starts
#     with a comment makes diff think that the following function
#     has been changed (if the following function starts with a comment
#     with the same first line, such as /**)
#   Work around diff stupidity where deleting an entire function and
#     the blank lines before it makes diff think you've changed the
#     previous function.

use diagnostics;
use strict;

use English;
use Text::Wrap;

# For each file, build a list of modified lines.
# Use line numbers from the "after" side of each diff.
print STDERR "  Running svn diff to find changes.\n";
my %changed_line_ranges;
my $file;
open DIFF, "svn diff --diff-cmd diff -x -N |" or die "The svn diff failed: $OS_ERROR.\n";
while (<DIFF>)
  {
    $file = $1 if /^Index: (\S+)$/;
    if (defined $file
        and $file ne "ChangeLog"
        and (/^\d+(,\d+)?[acd](\d+)(,(\d+))?/ or /^Binary files/) )
      {
        push @{$changed_line_ranges{$file}}, [ $2, $4 || $2 ];
      }
  }
close DIFF;
if (!%changed_line_ranges)
  {
    print STDERR "  No changes found.\n";
    exit;
  }

# For each ".c" file, convert line range to function list.
print STDERR "  Extracting affected function names from C source files.\n";
my %function_lists;
foreach my $file (keys %changed_line_ranges)
  {
    # An empty function list still indicates that something changed.
    $function_lists{$file} = "";

    # Only look for function names in .c files.
    next unless $file =~ /\.(c|java)/;

    # Find all the functions in the file.
    open SOURCE, $file or next;
    my @function_ranges = get_function_line_ranges(\*SOURCE, $file);
    close SOURCE;

    # Find all the modified functions.
    my @functions;
    my %saw_function;
    my @change_ranges = (@{$changed_line_ranges{$file}}, []);
    my @change_range = (0, 0);
    FUNCTION: foreach my $function_range_ref (@function_ranges)
      {
        my @function_range = @$function_range_ref;

        # Advance to successive change ranges.
        for (;; @change_range = @{shift @change_ranges})
          {
            last FUNCTION unless @change_range;

            # If past this function, move on to the next one.
            next FUNCTION if $change_range[0] > $function_range[1];

            # If an overlap with this function range, record the function name.
            if ($change_range[1] >= $function_range[0]
                and $change_range[0] <= $function_range[1])
              {
                if (!$saw_function{$function_range[2]})
                  {
                    $saw_function{$function_range[2]} = 1;
                    push @functions, $function_range[2];
                  }
                next FUNCTION;
              }
          }
      }

    # Format the list of functions now.
    $function_lists{$file} = " (" . join("), (", @functions) . "):" if @functions;
  }

# Get some pieces of the ChangeLog we are about to write.
my $date = sprintf "%d-%02d-%02d",
  1900 + (localtime $BASETIME)[5], # year
  1 + (localtime $BASETIME)[4], # month
  (localtime $BASETIME)[3]; # day within month
my $name = $ENV{CHANGE_LOG_NAME}
  || $ENV{REAL_NAME}
  || (getpwuid $REAL_USER_ID)[6]
  || "set REAL_NAME environment variable";
my $email_address = $ENV{CHANGE_LOG_EMAIL_ADDRESS}
  || $ENV{EMAIL_ADDRESS}
  || "set EMAIL_ADDRESS environment variable";

# Find the change logs.
my %has_log;
my %files;
foreach my $file (sort keys %function_lists)
  {
    my $prefix = $file;
    my $has_log = 0;
    while ($prefix)
      {
        $prefix =~ s-/[^/]+/?$-/- or $prefix = "";
        $has_log = $has_log{$prefix};
        if (!defined $has_log)
          {
            $has_log = -f "${prefix}ChangeLog";
            $has_log{$prefix} = $has_log;
          }
        last if $has_log;
      }
    if (!$has_log)
      {
        print STDERR "No ChangeLog found for $file.\n";
      }
    else
      {
        push @{$files{$prefix}}, $file;
      }
  }

# Get the latest ChangeLog files from svn.
my $logs = "";
foreach my $prefix (sort keys %files)
  {
    $logs .= " ${prefix}ChangeLog";
  }
if ($logs)
  {
    print STDERR "  Updating ChangeLog files from svn repository.\n";
    open ERRORS, "svn update$logs |" or die "The svn update of ChangeLog files failed: $OS_ERROR.\n";
    print STDERR "    $ARG" while <ERRORS>;
    close ERRORS;
  }


# Write out a new ChangeLog file.
foreach my $prefix (sort keys %files)
  {
    print STDERR "  Editing the ${prefix}ChangeLog file.\n";
    open OLD_CHANGE_LOG, "${prefix}ChangeLog" or die "Could not open ${prefix}ChangeLog file: $OS_ERROR.\n";
    # It's less efficient to read the whole thing into memory than it would be
    # to read it while we prepend to it later, but I like doing this part first.
    my @old_change_log = <OLD_CHANGE_LOG>;
    close OLD_CHANGE_LOG;
    open CHANGE_LOG, "> ${prefix}ChangeLog" or die "Could not write ${prefix}ChangeLog\n.";
    print CHANGE_LOG "$date  $name  <$email_address>\n\n";
    print CHANGE_LOG "\treviewed by: <delete if not using a buddy>\n\n";
    foreach my $file (sort @{$files{$prefix}})
      {
        my $file_stem = substr $file, length $prefix;
        my $lines = wrap("\t", "\t", "XX$file_stem:$function_lists{$file}");
        $lines =~ s/^\tXX/\t* /;
        print CHANGE_LOG "$lines\n";
      }
    print CHANGE_LOG "\n", @old_change_log;
    close CHANGE_LOG;
    print STDERR "  Done editing ${prefix}ChangeLog.\n";
  }

# Done.
exit;

sub get_function_line_ranges
  {
    my ($file_handle, $file_name) = @_;

    if ($file_name =~ /\.c$/) {
        return get_function_line_ranges_for_c ($file_handle, $file_name);
    } elsif ($file_name =~ /\.java$/) {
        return get_function_line_ranges_for_java ($file_handle, $file_name);
    }
    return ();
  }

# Read a file and get all the line ranges of the things that look like C functions.
# A function name is the last word before an open parenthesis before the outer
# level open brace. A function starts at the first character after the last close
# brace or semicolon before the function name and ends at the close brace.
# Comment handling is simple-minded but will work for all but pathological cases.
#
# Result is a list of triples: [ start_line, end_line, function_name ].

sub get_function_line_ranges_for_c
  {
    my ($file_handle, $file_name) = @_;

    my @ranges;

    my $in_comment = 0;
    my $in_macro = 0;
    my $in_parentheses = 0;
    my $in_braces = 0;

    my $word = "";

    my $potential_start = 0;
    my $potential_name = "";

    my $start = 0;
    my $name = "";

    while (<$file_handle>)
      {
        # Handle continued multi-line comment.
        if ($in_comment)
          {
            next unless s-.*\*/--;
            $in_comment = 0;
          }

        # Handle continued macro.
        if ($in_macro)
          {
            $in_macro = 0 unless /\\$/;
            next;
          }

        # Handle start of macro (or any preprocessor directive).
        if (/^\s*\#/)
          {
            $in_macro = 1 if /^([^\\]|\\.)*\\$/;
            next;
          }

        # Handle comments and quoted text.
        while (m-(/\*|//|\'|\")-) # \' and \" keep emacs perl mode happy
          {
            my $match = $1;
            if ($match eq "/*")
              {
                if (!s-/\*.*?\*/--)
                  {
                    s-/\*.*--;
                    $in_comment = 1;
                  }
              }
            elsif ($match eq "//")
              {
                s-//.*--;
              }
            else # ' or "
              {
                if (!s-$match([^\\]|\\.)*?$match--)
                  {
                    warn "mismatched quotes at line $INPUT_LINE_NUMBER in $file_name\n";
                    s-$match.*--;
                  }
              }
          }

        # Find function names.
        while (m-(\w+|[(){};])-g)
          {
            # Open parenthesis.
            if ($1 eq "(")
              {
                $potential_name = $word unless $in_parentheses;
                $in_parentheses++;
                next;
              }

            # Close parenthesis.
            if ($1 eq ")")
              {
                $in_parentheses--;
                next;
              }

            # Open brace.
            if ($1 eq "{")
              {
                # Promote potiential name to real function name at the
                # start of the outer level set of braces (function body?).
                if (!$in_braces and $potential_start)
                  {
                    $start = $potential_start;
                    $name = $potential_name;
                  }

                $in_braces++;
                next;
              }

            # Close brace.
            if ($1 eq "}")
              {
                $in_braces--;

                # End of an outer level set of braces.
                # This could be a function body.
                if (!$in_braces and $name)
                  {
                    push @ranges, [ $start, $INPUT_LINE_NUMBER, $name ];
                    $name = "";
                  }

                $potential_start = 0;
                $potential_name = "";
                next;
              }

            # Semicolon.
            if ($1 eq ";")
              {
                $potential_start = 0;
                $potential_name = "";
                next;
              }

            # Word.
            $word = $1;
            if (!$in_parentheses)
              {
                $potential_start = 0;
                $potential_name = "";
              }
            if (!$potential_start)
              {
                $potential_start = $INPUT_LINE_NUMBER;
                $potential_name = "";
              }
          }
      }

    warn "mismatched braces in $file_name\n" if $in_braces;
    warn "mismatched parentheses in $file_name\n" if $in_parentheses;

    return @ranges;
  }



# Read a file and get all the line ranges of the things that look like Java
# classes, interfaces and methods.
#
# A class or interface name is the word that immediately follows
# `class' or `interface' when followed by an open curly brace and not
# a semicolon. It can appear at the top level, or inside another class
# or interface block, but not inside a function block
#
# A class or interface starts at the first character after the first close
# brace or after the function name and ends at the close brace.
#
# A function name is the last word before an open parenthesis before
# an open brace rather than a semicolon. It can appear at top level or
# inside a class or interface block, but not inside a function block.
#
# A function starts at the first character after the first close
# brace or after the function name and ends at the close brace.
#
# Comment handling is simple-minded but will work for all but pathological cases.
#
# Result is a list of triples: [ start_line, end_line, function_name ].

sub get_function_line_ranges_for_java
  {
    my ($file_handle, $file_name) = @_;

    my @current_scopes;

    my @ranges;

    my $in_comment = 0;
    my $in_macro = 0;
    my $in_parentheses = 0;
    my $in_braces = 0;
    my $in_non_block_braces = 0;
    my $class_or_interface_just_seen = 0;

    my $word = "";

    my $potential_start = 0;
    my $potential_name = "";
    my $potential_name_is_class_or_interface = 0;

    my $start = 0;
    my $name = "";
    my $current_name_is_class_or_interface = 0;

    while (<$file_handle>)
      {
        # Handle continued multi-line comment.
        if ($in_comment)
          {
            next unless s-.*\*/--;
            $in_comment = 0;
          }

        # Handle continued macro.
        if ($in_macro)
          {
            $in_macro = 0 unless /\\$/;
            next;
          }

        # Handle start of macro (or any preprocessor directive).
        if (/^\s*\#/)
          {
            $in_macro = 1 if /^([^\\]|\\.)*\\$/;
            next;
          }

        # Handle comments and quoted text.
        while (m-(/\*|//|\'|\")-) # \' and \" keep emacs perl mode happy
          {
            my $match = $1;
            if ($match eq "/*")
              {
                if (!s-/\*.*?\*/--)
                  {
                    s-/\*.*--;
                    $in_comment = 1;
                  }
              }
            elsif ($match eq "//")
              {
                s-//.*--;
              }
            else # ' or "
              {
                if (!s-$match([^\\]|\\.)*?$match--)
                  {
                    warn "mismatched quotes at line $INPUT_LINE_NUMBER in $file_name\n";
                    s-$match.*--;
                  }
              }
          }

        # Find function names.
        while (m-(\w+|[(){};])-g)
          {
            # Open parenthesis.
            if ($1 eq "(")
              {
                if (!$in_parentheses) {
                    $potential_name = $word;
                    $potential_name_is_class_or_interface = 0;
                }
                $in_parentheses++;
                next;
              }

            # Close parenthesis.
            if ($1 eq ")")
              {
                $in_parentheses--;
                next;
              }

            # Open brace.
            if ($1 eq "{")
              {
                # Promote potiential name to real function name at the
                # start of the outer level set of braces (function/class/interface body?).
                if (!$in_non_block_braces
                    and (!$in_braces or $current_name_is_class_or_interface)
                    and $potential_start)
                  {
                    if ($name)
                      {
                          push @ranges, [ $start, ($INPUT_LINE_NUMBER - 1),
                                          join ('.', @current_scopes) ];
                      }


                    $current_name_is_class_or_interface = $potential_name_is_class_or_interface;

                    $start = $potential_start;
                    $name = $potential_name;

                    push (@current_scopes, $name);
                  } else {
                      $in_non_block_braces++;
                  }

                $potential_name = "";
                $potential_start = 0;

                $in_braces++;
                next;
              }

            # Close brace.
            if ($1 eq "}")
              {
                $in_braces--;

                # End of an outer level set of braces.
                # This could be a function body.
                if (!$in_non_block_braces)
                  {
                    if ($name)
                      {
                        push @ranges, [ $start, $INPUT_LINE_NUMBER,
                                        join ('.', @current_scopes) ];

                        pop (@current_scopes);

                        if (@current_scopes)
                          {
                            $current_name_is_class_or_interface = 1;

                            $start = $INPUT_LINE_NUMBER + 1;
                            $name =  $current_scopes[$#current_scopes-1];
                          }
                        else
                          {
                            $current_name_is_class_or_interface = 0;
                            $start = 0;
                            $name =  "";
                          }
                    }
                  }
                else
                  {
                    $in_non_block_braces-- if $in_non_block_braces;
                  }

                $potential_start = 0;
                $potential_name = "";
                next;
              }

            # Semicolon.
            if ($1 eq ";")
              {
                $potential_start = 0;
                $potential_name = "";
                next;
              }

            if ($1 eq "class" or $1 eq "interface")
              {
                $class_or_interface_just_seen = 1;
                next;
              }

            # Word.
            $word = $1;
            if (!$in_parentheses)
              {
                if ($class_or_interface_just_seen) {
                    $potential_name = $word;
                    $potential_start = $INPUT_LINE_NUMBER;
                    $class_or_interface_just_seen = 0;
                    $potential_name_is_class_or_interface = 1;
                    next;
                }
              }
            if (!$potential_start)
              {
                $potential_start = $INPUT_LINE_NUMBER;
                $potential_name = "";
              }
            $class_or_interface_just_seen = 0;
          }
      }

    warn "mismatched braces in $file_name\n" if $in_braces;
    warn "mismatched parentheses in $file_name\n" if $in_parentheses;

    return @ranges;
  }