fish-shell/build_tools/fish_xgettext.fish
Érico Rolim 3e3a42c127 build_tools/fish_xgettext.fish: use temporary directory.
Instead of using /tmp/fish as a temporary directory for this operation,
which could lead to clobbering user files, use mktemp to create an
actual temporary directory.
2020-11-13 16:29:37 +01:00

60 lines
3.1 KiB
Fish
Executable file

#!/usr/bin/env fish
#
# Tool to generate messages.pot
# Extended to replace the old Makefile rule which did not port easily to CMake
# This script was originally motivated to work around a quirk (or bug depending on your viewpoint)
# of the xgettext command. See https://lists.gnu.org/archive/html/bug-gettext/2014-11/msg00006.html.
# However, it turns out that even if that quirk did not exist we would still need something like
# this script to properly extract descriptions. That's because we need to normalize the strings to
# a format that xgettext will handle correctly. Also, `xgettext -LShell` doesn't correctly extract
# all the strings we want translated. So we extract and normalize all such strings into a format
# that `xgettext` can handle.
# Start with the C++ source
xgettext -k -k_ -kN_ -LC++ --no-wrap -o messages.pot src/*.cpp src/*.h
# This regex handles descriptions for `complete` and `function` statements. These messages are not
# particularly important to translate. Hence the "implicit" label.
set -l implicit_regex '(?:^| +)(?:complete|function).*? (?:-d|--description) (([\'"]).+?(?<!\\\\)\\2).*'
# This regex handles explicit requests to translate a message. These are more important to translate
# than messages which should be implicitly translated.
set -l explicit_regex '.*\( *_ (([\'"]).+?(?<!\\\\)\\2) *\).*'
# Create temporary directory for these operations. OS X `mktemp` is somewhat restricted, so this block
# works around that - based on share/functions/funced.fish.
set -q TMPDIR
or set -l TMPDIR /tmp
set -l tmpdir (mktemp -d $TMPDIR/fish.XXXXXX)
or exit 1
mkdir -p $tmpdir/implicit/share/completions $tmpdir/implicit/share/functions
mkdir -p $tmpdir/explicit/share/completions $tmpdir/explicit/share/functions
for f in share/config.fish share/completions/*.fish share/functions/*.fish
# Extract explicit attempts to translate a message. That is, those that are of the form
# `(_ "message")`.
string replace --filter --regex $explicit_regex 'echo $1' <$f | fish >$tmpdir/explicit/$f.tmp 2>/dev/null
while read description
echo 'N_ "'(string replace --all '"' '\\"' -- $description)'"'
end <$tmpdir/explicit/$f.tmp >$tmpdir/explicit/$f
rm $tmpdir/explicit/$f.tmp
# Handle `complete` / `function` description messages. The `| fish` is subtle. It basically
# avoids the need to use `source` with a command substitution that could affect the current
# shell.
string replace --filter --regex $implicit_regex 'echo $1' <$f | fish >$tmpdir/implicit/$f.tmp 2>/dev/null
while read description
# We don't use `string escape` as shown in the next comment because it produces output that
# is not parsed correctly by xgettext. Instead just escape double-quotes and quote the
# resulting string.
echo 'N_ "'(string replace --all '"' '\\"' -- $description)'"'
end <$tmpdir/implicit/$f.tmp >$tmpdir/implicit/$f
rm $tmpdir/implicit/$f.tmp
end
xgettext -j -k -kN_ -LShell --from-code=UTF-8 -cDescription --no-wrap -o messages.pot $tmpdir/explicit/share/*/*.fish
xgettext -j -k -kN_ -LShell --from-code=UTF-8 -cDescription --no-wrap -o messages.pot $tmpdir/implicit/share/*/*.fish
rm -r $tmpdir