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emacs/build-aux/msys-to-w32
2023-01-01 05:31:12 -05:00

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#!/bin/bash
# Convert a MSYS path list to Windows-native format.
# Status is zero if successful, nonzero otherwise.
# Copyright (C) 2013-2023 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# Take only the basename from the full pathname
me=${0//*\//}
usage="usage: ${me} PATHLIST"
help="$usage
or: ${me} OPTION
Convert a MSYS path list to Windows-native format.
PATHLIST should be a colon-separated list of MSYS paths, which will be
written to the standard output after performing these transformations:
1. Discard empty paths.
2. Replace: '\' with '/', '//' with '/' and ':' with ';'.
3. Translate absolute paths to Windows-native format.
Options:
--help display this help and exit
Report bugs to <bug-gnu-emacs@gnu.org>."
for arg
do
case $arg in
--help | --hel | --he | --h)
exec echo "$help" ;;
--)
shift
break ;;
-*)
echo "${me}: invalid option: $arg" >&2
exit 1 ;;
*)
break ;;
esac
done
[ $# -eq 1 ] || {
echo "${me}: $usage" >&2
exit 1
}
w32pathlist=""
# Put each MSYS path in one positional parameter and iterate through
# them
IFS=:
set -- $1
for p
do
[ -z "$p" ] && continue
if [ "${p:0:1}" != "/" ]
then
w32p=$p
elif [ -d "$p" ]
then
w32p=$(cd "$p" && pwd -W)
else
# Make some cleanup in the path and look for its deepest
# existing directory
p=${p//\\//}
p=${p//\/\///}
p=${p%/}
p1=$p
while :
do
p1=${p1%/*}
[ -z "$p1" ] && p1="/" && break
[ -d "$p1" ] && break
done
# translate the existing part and append the rest
w32p=$(cd "${p1}" && pwd -W)
remainder=${p#$p1}
w32p=${w32p%/}/${remainder#/}
fi
w32pathlist="${w32pathlist};${w32p}"
done
echo "${w32pathlist:1}"