libiberty/gather-docs

   1 #!/usr/bin/perl
   2 # -*- perl -*-
   3
   4 #   Copyright (C) 2001-2020 Free Software Foundation, Inc.
   5 #
   6 # This file is part of the libiberty library.
   7 # Libiberty is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU Library General Public
   9 # License as published by the Free Software Foundation; either
  10 # version 2 of the License, or (at your option) any later version.
  11 #
  12 # Libiberty is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # Library General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU Library General Public
  18 # License along with libiberty; see the file COPYING.LIB.  If not,
  19 # write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  20 # Boston, MA 02110-1301, USA.
  21 #
  22 # Originally written by DJ Delorie <dj@redhat.com>
  23
  24
  25
  26 # This program looks for texinfo snippets in source files and other
  27 # files, and builds per-category files with entries sorted in
  28 # alphabetical order.
  29
  30 # The syntax it looks for is lines starting with '@def' in *.c and
  31 # other files (see TEXIFILES in Makefile.in).  Entries are terminated
  32 # at the next @def* (which begins a new entry) or, for C files, a line
  33 # that begins with '*/' without leading spaces (this assumes that the
  34 # texinfo snippet is within a C-style /* */ comment).
  35
  36 #
  37
  38
  39
  40 if ($ARGV[0] eq "-v") {
  41     $verbose = 1;
  42     shift;
  43 }
  44
  45 $srcdir = shift;
  46 $outfile = shift;
  47
  48 if ($outfile !~ /\S/ || ! -f "$srcdir/Makefile.in" ) {
  49     print STDERR "Usage: gather-docs [-v] srcdir outfile.txi [files with snippets in them ...]\n";
  50     exit 1;
  51 }
  52
  53 $errors = 0;
  54
  55 for $in (@ARGV) {
  56
  57     if (!open(IN, "$srcdir/$in")) {
  58         print STDERR "Cannot open $srcdir/$in for reading: $!\n";
  59         $errors ++;
  60
  61     } else {
  62         $first = 1;
  63         $pertinent = 0;
  64         $man_mode = 0;
  65         $line = 0;
  66
  67         while (<IN>) {
  68             $line ++;
  69             $pertinent = 1 if /^\@def[a-z]*[a-wyz] /;
  70             $pertinent = 0 if /^\*\//;
  71             next unless $pertinent;
  72
  73             if (/^\@def[a-z]*[a-wyz] /) {
  74
  75                 ($name) = m/[^\(]* ([^\( \t\r\n\@]+) *(\(|\@?$)/;
  76                 $name =~ s/[     ]*\@?$//;
  77                 $key = $name;
  78                 $key =~ tr/A-Z/a-z/;
  79                 $key =~ s/[^a-z0-9]+/ /g;
  80                 $name{$key} = $node;
  81                 $lines{$key} = '';
  82                 $src_file{$key} = $in;
  83                 $src_line{$key} = $line;
  84                 print "\nReading $in :" if $verbose && $first;
  85                 $first = 0;
  86                 print " $name" if $verbose;
  87                 $node_lines{$key} .= $_;
  88
  89             } else {
  90                 $node_lines{$key} .= $_;
  91             }
  92
  93             $pertinent = 0 if /^\@end def/;
  94         }
  95         close (IN);
  96     }
  97 }
  98
  99 print "\n" if $verbose;
 100 exit $errors if $errors;
 101
 102 if (!open (OUT, "> $outfile")) {
 103     print STDERR "Cannot open $outfile for writing: $!\n";
 104     $errors ++;
 105     next;
 106 }
 107 print "Writing $outfile\n" if $verbose;
 108
 109 print OUT "\@c Automatically generated from *.c and others (the comments before\n";
 110 print OUT "\@c each entry tell you which file and where in that file).  DO NOT EDIT!\n";
 111 print OUT "\@c Edit the *.c files, configure with --enable-maintainer-mode,\n";
 112 print OUT "\@c run 'make stamp-functions' and gather-docs will build a new copy.\n\n";
 113
 114 for $key (sort keys %name) {
 115     print OUT "\@c $src_file{$key}:$src_line{$key}\n";
 116     print OUT $node_lines{$key};
 117     print OUT "\n";
 118 }
 119
 120 if (! print OUT "\n") {
 121     print STDERR "Disk full writing $srcdir/$cat.texi\n";
 122     $errors ++;
 123 }
 124
 125 close (OUT);
 126
 127 exit $errors;