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 # Locate files to scan, and generate the list.  All .c, .h, and .def files
  62 # in $srcdir are examined, likewise $srcdir/config and $srcdir/config/*
  63 # (directories).  Also, all subdirectories of $srcdir that contain a
  64 # config-lang.in.  Exclusions come from $srcdir/po/EXCLUDE.
  65 #
  66 # Then generate keyword options for xgettext, by scanning for declarations
  67 # of functions whose parameter names end in "msgid".
  68 #
  69 # Finally, generate a source file containing all %e strings from
  70 # driver specs, so those can be translated too.
  71 #
  72 # All in one huge awk script.
  73
  74 echo "scanning for keywords and %e strings..." >&2
  75
  76 ( cd $srcdir
  77   lang_subdirs=`echo */config-lang.in | sed -e 's|config-lang\.in||g'`
  78   for dir in "" config/ config/*/ $lang_subdirs
  79   do  for glob in '*.c' '*.h' '*.def'
  80       do  eval echo $dir$glob
  81       done
  82   done | tr ' ' "$nl" | grep -v '\*' |
  83   $AWK -v excl=po/EXCLUDES -v posr=$posr -v kopt=$kopt -v emsg=$emsg '
  84 function keyword_option(line) {
  85     paren_index = index(line, "(")
  86     name = substr(line, 1, paren_index - 1)
  87     sub(/[^0-9A-Z_a-z]*$/, "", name)
  88     sub(/[       ]+PARAMS/, "", name)
  89     sub(/[       ]+VPARAMS/, "", name)
  90     sub(/.*[^0-9A-Z_a-z]/, "", name)
  91
  92     args = substr(line, paren_index)
  93     sub(/msgid[,\)].*/, "", args)
  94     for (n = 1; sub(/^[^,]*,/, "", args); n++) {
  95         continue
  96     }
  97
  98     if (n == 1) { keyword = name }
  99     else        { keyword = name ":" n }
 100
 101     if (! keyword_seen[keyword]++) {
 102         print "--keyword=" keyword > kopt
 103     }
 104 }
 105
 106 function spec_error_string (line) {
 107     while ((percent_index = index(line, "%e")) != 0) {
 108         escape = substr(line, percent_index - 1, 1)
 109         line = substr(line, percent_index + 2)
 110         if (escape == "%") return
 111
 112         bracket_index = index(line, "}")
 113         if (bracket_index == 0) return
 114
 115         msgid = substr(line, 1, bracket_index - 1)
 116         if (index(msgid, "%") != 0) return
 117
 118         printf("#line %d \"%s\"\n", lineno, file) > emsg
 119         printf("_(\"%s\")\n", msgid) > emsg
 120
 121         line = substr(line, bracket_index + 1)
 122     }
 123 }
 124
 125 BEGIN {
 126   while ((getline < excl) > 0) {
 127     if ($0 ~ /^#/ || $0 ~ /^[   ]*$/)
 128       continue
 129     excludes[$1] = 1
 130   }
 131 }
 132
 133 { if (!($0 in excludes)) {
 134     print > posr
 135     files[NR] = $0
 136   }
 137 }
 138
 139 END {
 140     for (f in files) {
 141         file = files[f]
 142         lineno = 1
 143         while (getline < file) {
 144             if (/^(#[   ]*define[       ]*)?[A-Za-z_].*\(.*msgid[,\)]/) {
 145                 keyword_option($0)
 146             } else if (/%e/) {
 147                 spec_error_string($0)
 148             }
 149             lineno++
 150         }
 151     }
 152     print emsg > posr
 153 }'
 154 )
 155
 156 # Run the xgettext command, with temporary added as a file to scan.
 157 echo "running xgettext..." >&2
 158 $xgettext --default-domain=$package --directory=$srcdir \
 159           --add-comments `cat $kopt` --files-from=$posr \
 160           --language=c -o po/$package.pot