gcc/po/exgettext

   1 #! /bin/sh
   2 # Wrapper around gettext for programs using the msgid convention.
   3 # Copyright 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
   4
   5 # Written by Paul Eggert <eggert@twinsun.com>.
   6 # Revised by Zack Weinberg <zackw@stanford.edu> for no-POTFILES operation.
   7
   8 # This file is part of GCC.
   9
  10 # GCC is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 2, or (at your option)
  13 # any later version.
  14
  15 # GCC is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19
  20 # You should have received a copy of the GNU General Public License
  21 # along with GCC; see the file COPYING.  If not, write to
  22 # the Free Software Foundation, 59 Temple Place - Suite 330,
  23 # Boston, MA 02111-1307, USA.
  24
  25 # Always operate in the C locale.
  26 LANG=C
  27 LANGUAGE=C
  28 LC_ALL=C
  29 export LANG LANGUAGE LC_ALL
  30
  31 # Set AWK if environment has not already set it.
  32 AWK=${AWK-awk}
  33
  34 # The arguments to this wrapper are: the program to execute, the
  35 # name of the "package", and the path to the source directory.
  36
  37 if [ $# -ne 3 ]
  38 then    echo "usage: $0 <xgettext> <package> <srcdir>"
  39         exit 1
  40 fi
  41
  42 xgettext=$1
  43 package=$2
  44 srcdir=$3
  45
  46 nl='
  47 '
  48
  49 set -e
  50
  51 # Create temporary directory for scratch files.
  52 T=exg$$.d
  53 mkdir $T
  54 trap "rm -r $T" 0
  55
  56 pwd=`${PWDCMD-pwd}`
  57 kopt=$pwd/$T/keyword-options
  58 emsg=$pwd/$T/emsgids.c
  59 posr=$pwd/$T/po-sources
  60
  61 # Extra files to scan
  62 extra_files=$pwd/options.c
  63
  64 # Locate files to scan, and generate the list.  All .c, .h, and .def files
  65 # in $srcdir are examined, likewise $srcdir/config and $srcdir/config/*
  66 # (directories).  Also, all subdirectories of $srcdir that contain a
  67 # config-lang.in.  Exclusions come from $srcdir/po/EXCLUDE.
  68 #
  69 # Then generate keyword options for xgettext, by scanning for declarations
  70 # of functions whose parameter names end in "msgid".
  71 #
  72 # Finally, generate a source file containing all %e strings from
  73 # driver specs, so those can be translated too.
  74 #
  75 # All in one huge awk script.
  76
  77 echo "scanning for keywords and %e strings..." >&2
  78
  79 ( cd $srcdir
  80   lang_subdirs=`echo */config-lang.in | sed -e 's|config-lang\.in||g'`
  81   { for dir in "" config/ config/*/ $lang_subdirs
  82     do  for glob in '*.c' '*.h' '*.def'
  83         do  eval echo $dir$glob
  84         done
  85     done;
  86     echo $extra_files;
  87   } | tr ' ' "$nl" | grep -v '\*' |
  88   $AWK -v excl=po/EXCLUDES -v posr=$posr -v kopt=$kopt -v emsg=$emsg '
  89 function keyword_option(line) {
  90     paren_index = index(line, "(")
  91     name = substr(line, 1, paren_index - 1)
  92     sub(/[^0-9A-Z_a-z]*$/, "", name)
  93     sub(/[       ]+PARAMS/, "", name)
  94     sub(/[       ]+VPARAMS/, "", name)
  95     sub(/.*[^0-9A-Z_a-z]/, "", name)
  96
  97     args = substr(line, paren_index)
  98     sub(/msgid[,\)].*/, "", args)
  99     for (n = 1; sub(/^[^,]*,/, "", args); n++) {
 100         continue
 101     }
 102
 103     if (n == 1) { keyword = name }
 104     else        { keyword = name ":" n }
 105
 106     if (! keyword_seen[keyword]++) {
 107         print "--keyword=" keyword > kopt
 108     }
 109 }
 110
 111 function spec_error_string (line) {
 112     while ((percent_index = index(line, "%e")) != 0) {
 113         escape = substr(line, percent_index - 1, 1)
 114         line = substr(line, percent_index + 2)
 115         if (escape == "%") return
 116
 117         bracket_index = index(line, "}")
 118         if (bracket_index == 0) return
 119
 120         msgid = substr(line, 1, bracket_index - 1)
 121         if (index(msgid, "%") != 0) return
 122
 123         printf("#line %d \"%s\"\n", lineno, file) > emsg
 124         printf("_(\"%s\")\n", msgid) > emsg
 125
 126         line = substr(line, bracket_index + 1)
 127     }
 128 }
 129
 130 BEGIN {
 131   while ((getline < excl) > 0) {
 132     if ($0 ~ /^#/ || $0 ~ /^[   ]*$/)
 133       continue
 134     excludes[$1] = 1
 135   }
 136 }
 137
 138 { if (!($0 in excludes)) {
 139     print > posr
 140     files[NR] = $0
 141   }
 142 }
 143
 144 END {
 145     for (f in files) {
 146         file = files[f]
 147         lineno = 1
 148         while (getline < file) {
 149             if (/^(#[   ]*define[       ]*)?[A-Za-z_].*\(.*msgid[,\)]/) {
 150                 keyword_option($0)
 151             } else if (/%e/) {
 152                 spec_error_string($0)
 153             }
 154             lineno++
 155         }
 156     }
 157     print emsg > posr
 158 }'
 159 )
 160
 161 # Run the xgettext command, with temporary added as a file to scan.
 162 echo "running xgettext..." >&2
 163 $xgettext --default-domain=$package --directory=$srcdir \
 164           --add-comments `cat $kopt` --files-from=$posr \
 165           --language=c -o po/$package.pot