gnu/dist/gettext/gettext-tools/src/msgunfmt.tcl

   1 # Reading tcl/msgcat .msg files.
   2 # Copyright (C) 2002 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software Foundation,
  16 # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 namespace eval msgcat {
  19   namespace export mcset mcdump
  20   variable header ""
  21 }
  22
  23 proc msgcat::puts_po_string {str} {
  24   # Replace " with \"
  25   regsub -all "\"" $str "\\\"" str
  26   # Replace \ with \\
  27   regsub -all "\\\\" $str "\\\\\\" str
  28   # Replace newline with \n
  29   regsub -all [subst "\n"] $str "\\n" str
  30   regsub -all [subst "\a"] $str "\\a" str
  31   regsub -all [subst "\b"] $str "\\b" str
  32   regsub -all [subst "\f"] $str "\\f" str
  33   regsub -all [subst "\r"] $str "\\r" str
  34   regsub -all [subst "\t"] $str "\\t" str
  35   regsub -all [subst "\v"] $str "\\v" str
  36   # Output it.
  37   puts -nonewline "\"$str\""
  38 }
  39
  40 proc msgcat::write_po_message {msgid msgstr} {
  41   puts -nonewline "msgid "
  42   puts_po_string $msgid
  43   puts ""
  44   puts -nonewline "msgstr "
  45   puts_po_string $msgstr
  46   puts ""
  47   puts ""
  48 }
  49
  50 # This gets called once for each message in the .msg catalog.
  51 proc msgcat::mcset {locale src {dest ""}} {
  52   msgcat::write_po_message $src $dest
  53 }
  54
  55 # Main function.
  56 proc msgcat::mcdump {langfile} {
  57   if {[file exists $langfile]} {
  58     # msgunfmt expects the output in UTF-8 encoding.
  59     fconfigure stdout -encoding utf-8
  60
  61     set msgcat::header ""
  62
  63     set fd [open $langfile r]
  64     # In newer tcl versions, the .msg files are in UTF-8 encoding.
  65     fconfigure $fd -encoding utf-8
  66     eval [read $fd]
  67     close $fd
  68
  69     if {$msgcat::header == ""} {
  70       # Provide a minimal header.
  71       set msgcat::header [subst "MIME-Version: 1.0\nContent-Type: text/plain; charset=UTF-8\nContent-Transfer-Encoding: 8bit\n"]
  72     }
  73     msgcat::write_po_message "" $msgcat::header
  74   } else {
  75     # Tell msgunfmt to emit an internationalized error message.
  76     exit 2
  77   }
  78 }
  79
  80 # Main code: call the main function on the first and only argument.
  81 msgcat::mcdump [lindex $argv 0]
  82
  83 exit 0