mingw/bin/gettext.sh

   1 #! /bin/sh
   2 #
   3 # Copyright (C) 2003, 2005-2007 Free Software Foundation, Inc.
   4 #
   5 # This program is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU Library General Public License as published
   7 # by the Free Software Foundation; either version 2, or (at your option)
   8 # any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU Library General Public
  16 # License along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  18 # USA.
  19 #
  20
  21 # Find a way to echo strings without interpreting backslash.
  22 if test "X`(echo '\t') 2>/dev/null`" = 'X\t'; then
  23   echo='echo'
  24 else
  25   if test "X`(printf '%s\n' '\t') 2>/dev/null`" = 'X\t'; then
  26     echo='printf %s\n'
  27   else
  28     echo_func () {
  29       cat <<EOT
  30 $*
  31 EOT
  32     }
  33     echo='echo_func'
  34   fi
  35 fi
  36
  37 # This script is primarily a shell function library. In order for
  38 # ". gettext.sh" to find it, we install it in $PREFIX/bin (that is usually
  39 # contained in $PATH), rather than in some other location such as
  40 # $PREFIX/share/sh-scripts or $PREFIX/share/gettext. In order to not violate
  41 # the Filesystem Hierarchy Standard when doing so, this script is executable.
  42 # Therefore it needs to support the standard --help and --version.
  43 if test -z "$ZSH_VERSION"; then
  44   # zsh is not POSIX compliant: By default, while ". gettext.sh" is executed,
  45   # it sets $0 to "gettext.sh", defeating the purpose of this test. But
  46   # fortunately we know that when running under zsh, this script is always
  47   # being sourced, not executed, because hardly anyone is crazy enough to
  48   # install zsh as /bin/sh.
  49   case "$0" in
  50     gettext.sh | */gettext.sh | *\\gettext.sh)
  51       progname=$0
  52       package=gettext-runtime
  53       version=0.18.1
  54       # func_usage
  55       # outputs to stdout the --help usage message.
  56       func_usage ()
  57       {
  58         echo "GNU gettext shell script function library version $version"
  59         echo "Usage: . gettext.sh"
  60       }
  61       # func_version
  62       # outputs to stdout the --version message.
  63       func_version ()
  64       {
  65         echo "$progname (GNU $package) $version"
  66         echo "Copyright (C) 2003-2007 Free Software Foundation, Inc.
  67 License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
  68 This is free software: you are free to change and redistribute it.
  69 There is NO WARRANTY, to the extent permitted by law."
  70         echo "Written by" "Bruno Haible"
  71       }
  72       if test $# = 1; then
  73         case "$1" in
  74           --help | --hel | --he | --h )
  75             func_usage; exit 0 ;;
  76           --version | --versio | --versi | --vers | --ver | --ve | --v )
  77             func_version; exit 0 ;;
  78         esac
  79       fi
  80       func_usage 1>&2
  81       exit 1
  82       ;;
  83   esac
  84 fi
  85
  86 # eval_gettext MSGID
  87 # looks up the translation of MSGID and substitutes shell variables in the
  88 # result.
  89 eval_gettext () {
  90   gettext "$1" | (export PATH `envsubst --variables "$1"`; envsubst "$1")
  91 }
  92
  93 # eval_ngettext MSGID MSGID-PLURAL COUNT
  94 # looks up the translation of MSGID / MSGID-PLURAL for COUNT and substitutes
  95 # shell variables in the result.
  96 eval_ngettext () {
  97   ngettext "$1" "$2" "$3" | (export PATH `envsubst --variables "$1 $2"`; envsubst "$1 $2")
  98 }
  99
 100 # Note: This use of envsubst is much safer than using the shell built-in 'eval'
 101 # would be.
 102 # 1) The security problem with Chinese translations that happen to use a
 103 #    character such as \xe0\x60 is avoided.
 104 # 2) The security problem with malevolent translators who put in command lists
 105 #    like "$(...)" or "`...`" is avoided.
 106 # 3) The translations can only refer to shell variables that are already
 107 #    mentioned in MSGID or MSGID-PLURAL.
 108 #
 109 # Note: "export PATH" above is a dummy; this is for the case when
 110 # `envsubst --variables ...` returns nothing.
 111 #
 112 # Note: In eval_ngettext above, "$1 $2" means a string whose variables set is
 113 # the union of the variables set of "$1" and "$2".
 114 #
 115 # Note: The minimal use of backquote above ensures that trailing newlines are
 116 # not dropped, not from the gettext invocation and not from the value of any
 117 # shell variable.
 118 #
 119 # Note: Field splitting on the `envsubst --variables ...` result is desired,
 120 # since envsubst outputs the variables, separated by newlines. Pathname
 121 # wildcard expansion or tilde expansion has no effect here, since the words
 122 # output by "envsubst --variables ..." consist solely of alphanumeric
 123 # characters and underscore.