build/doc-extract

   1 #!/usr/bin/perl
   2 # Script for extracting documentation out of header files
   3 # (c) 2008 Michal Vaner <vorner@ucw.cz>
   4
   5 use strict;
   6 use warnings;
   7
   8 my( $inname, $outname, $depname, $basedir, $defdump ) = @ARGV;
   9 if( defined $inname ) {
  10         open IN, $inname or die "Could not read $inname ($!)\n";
  11 } else {
  12         open IN, "<&STDIN" or die "Could not read stdin ($!)\n";
  13 }
  14 if( defined $outname ) {
  15         open OUT, ">$outname" or die "Could not write $outname ($!)\n";
  16 } else {
  17         open OUT, ">&STDOUT" or die "Could not write to stdout ($!)\n";
  18 }
  19 my $hasdump;
  20 if( defined $defdump ) {
  21         open DUMP, ">$defdump" or die "Could not write definition dump $defdump ($!)\n";
  22         $hasdump = 1;
  23 }
  24
  25 sub detect( $ ) {
  26         ( $_ ) = @_;
  27         return( 'struct', 1, $1, "typedef struct { ... } $1;" ) if( /^\s*typedef\s+struct\s*{.*}\s*(\w+)\s*;\s*$/s );
  28         return( 'enum', 1, $1, "typedef enum { ... } $1;" ) if( /^\s*typedef\s+enum\s*{.*}\s*(\w+)\s*;\s*$/s );
  29         my $l = length;
  30         s/\n.*//s;
  31         return( 'struct', 0, $1, $_ ) if( /struct\s+(\w+)\s+{/ );
  32         return( 'enum', 0, $1, $_ ) if( /enum\s+(\w+)\s+{/ );
  33         if( $l > length ) {
  34                 warn( "Unknown statement $_\n" );
  35                 return( '', 0, $_, $_ );
  36         }
  37         return( 'def', 0, $1, $_ ) if( /#define\s+(\w+)/ );
  38         return( 'fun', 1, $2, $1 ) if( /^(.*?(\w+)\([^{]*\)[^{]*)/ );
  39         return( 'var', 1, $1, $_ ) if( /\s(\w+);/ );
  40         warn( "Unknown statement $_\n" );
  41         return( '', 0, $_, $_ );
  42 }
  43
  44 my @deps;
  45 my $id = 0;
  46
  47 sub formatNote( $$ ) {
  48         my( $head, $comment ) = @_;
  49         $head =~ s/(\S)[ ]+/$1 /g;
  50         print OUT "\n";
  51         print OUT "''''\n";
  52         chomp $head;
  53         my( $type, $semicolon, $name, $oneline ) = detect( $head );
  54         $oneline =~ s/\s+$//;
  55         $oneline =~ s/;?$/;/ if( $semicolon );
  56         $head =~ s/;?\s*$/;/ if( $semicolon );
  57         $head =~ s/(\.\.\.)/\\$1/g;
  58         print OUT "[[${type}_$name]]\n";
  59         if( $type eq 'fun' ) {
  60                 print OUT "!!f!$head!!!\n\n";
  61         } else {
  62                 print OUT "..................\n";
  63                 print OUT "$head\n";
  64                 print OUT "..................\n\n";
  65         }
  66         if( $hasdump ) {
  67                 print DUMP "$outname,${type}_$name,$type,$name,$oneline\n";
  68                 $id ++;
  69         }
  70         print OUT "$comment\n\n";
  71 }
  72
  73 sub process( $ ) {
  74         my $file = shift;
  75         open FILE, $file or die "Could nod read $file ($!)\n";
  76         my $line;
  77         my $active;
  78         my $verbatim;
  79         my $buff;
  80         my $head;
  81         my $struct;
  82         while( defined( $line = <FILE> ) ) {
  83                 chomp $line;
  84                 if( $struct ) {
  85                         $head .= "\n".$line;
  86                         if( $line =~ /}/ ) {
  87                                 formatNote( $head, $buff );
  88                                 $struct = 0;
  89                                 $buff = undef;
  90                                 $head = undef;
  91                         }
  92                 } elsif( $verbatim ) {
  93                         if( $line =~ /\*\// ) {
  94                                 $verbatim = 0;
  95                                 print OUT "\n";
  96                         } else {
  97                                 $line =~ s/^\s*\* ?//;
  98                                 print OUT "$line\n";
  99                         }
 100                 } elsif( $active ) {
 101                         if( $line =~ /\*\// ) {
 102                                 $active = 0;
 103                         } else {
 104                                 $line =~ s/^\s*\* ?//;
 105                                 $buff .= "$line\n";
 106                         }
 107                 } else {
 108                         if( ( $line =~ /\S/ ) && ( defined $buff ) ) {
 109                                 if( $line =~ /\(/ || $line !~ /{/ ) {
 110                                         $_ = $line;
 111                                         s/^\s*\s?//;
 112                                         s/\/\/.*//;
 113                                         s/\/\*.*?\*\///gs;
 114                                         formatNote( $_, $buff );
 115                                         $head = undef;
 116                                         $buff = undef;
 117                                 } else {
 118                                         $head = $line;
 119                                         $struct = 1;
 120                                 }
 121                         } elsif( ( $buff ) = ( $line =~ /\/\*\*\*(.*)\*\*\*\// ) ) {
 122                                 $buff =~ s/\s?//;
 123                                 print OUT "$buff\n\n";
 124                                 $buff = undef;
 125                         } elsif( ( $head, $buff ) = ( $line =~ /^(.*)\/\*\*(.*)\*\*\// ) ) {
 126                                 $buff =~ s/^\s*//;
 127                                 $buff =~ s/\s*$//;
 128                                 if( $head =~ /\(/ || $head !~ /{/ ) {
 129                                         $head =~ s/^\s*//;
 130                                         $head =~ s/\/\*.*?\*\///gs;
 131                                         formatNote( $head, $buff );
 132                                         $head = undef;
 133                                         $buff = undef;
 134                                 } else {
 135                                         $struct = 1;
 136                                 }
 137                         } elsif( $line =~ /\/\*\*\*/ ) {
 138                                 $verbatim = 1;
 139                         } elsif( $line =~ /\/\*\*/ ) {
 140                                 $active = 1;
 141                         }
 142                 }
 143         }
 144         close FILE;
 145 }
 146
 147 my $line;
 148 while( defined( $line = <IN> ) ) {
 149         chomp $line;
 150         if( my( $fname ) = ( $line =~ /^!!\s*(.*\S)/ ) ) {
 151                 $fname = "$basedir/$fname" if( ( $fname !~ /^\// ) && defined $basedir );
 152                 process( $fname );
 153                 push @deps, $fname;
 154         } else {
 155                 print OUT "$line\n";
 156         }
 157 }
 158
 159 if( defined $depname ) {
 160         open DEP, ">>$depname" or die "Could not write dep file $depname ($!)\n";
 161         print DEP "$outname:";
 162         print DEP " $_" foreach( @deps );
 163         print DEP "\n";
 164         if( $hasdump ) {
 165                 print DEP "$defdump:";
 166                 print DEP " $_" foreach( @deps );
 167                 print DEP "\n";
 168         }
 169         close DEP;
 170 }
 171
 172 close IN;
 173 close OUT;
 174 close DUMP;