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#!/usr/bin/env bash
# Copyright (C) 2013-2017 Luke Shumaker <lukeshu@sbcglobal.net>
#
# License: GNU GPLv2+
#
# 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 2 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 <http://www.gnu.org/licenses/>.
# NB: During normal operation (i.e. not printing `usage()`) text, we
# don't use librelib. This is important as we need to be able to run
# this program statically in-place when building libretools.
export TEXTDOMAIN='librelib'
export TEXTDOMAINDIR='/usr/share/locale'
default_simple=(
--keyword={eval_,}{gettext,'ngettext:1,2'}
--keyword={_,print,term_title}
--keyword={msg,msg2,warning,error,stat_busy,die}
--keyword={lock,slock}:3
)
default_prose=(--keyword={prose,bullet})
readonly default_simple default_prose
if ! type gettext &>/dev/null; then
gettext() { echo "$@"; }
fi
errusage() {
if [[ $# -gt 0 ]]; then
fmt="$(gettext "$1")"; shift
printf "${0##*/}: $fmt\n" "$@"
fi
usage >&2
}
usage() {
. "$(librelib messages)"
print 'Usage: %s [OPTIONS] FILES...' "${0##*/}"
print 'Generates .pot files for programs using libremessages'
echo
prose 'In librexgettext, there are 2 types of keywords:'
bullet 'simple: Simple keywords are just like normal xgettext'
bullet 'prose: Prose keywords are similar, but the text is
word-wrapped'
prose 'The keyword format is the same as in GNU xgettext.'
echo
prose 'The libremessages `flag` command is also handled
specially, and is not configurable as a keyword.'
echo
prose 'The default simple keywords are: %s' "${default_simple[*]#--keyword=}"
echo
prose 'The default prose keywords are: %s' "${default_prose[*]#--keyword=}"
echo
print 'Options:'
flag \
'--simple=KEYWORD' 'Look for KEYWORD as an additional simple keyword' \
'--prose=KEYWORD' 'Look for KEYWORD as an additional prose keyword' \
'-k' 'Disable using the default keywords' \
'-h, --help' 'Show this text'
}
xgettext-sh() {
xgettext --omit-header --from-code=UTF-8 -L shell -k -o - "$@"
}
xgettext-flag() {
{
# Stage 1: Generate
#
# Get all of the arguments to `flag`. Because `flag`
# takes an arbitrary number of arguments, just iterate
# through arg1, arg2, ... argN; until we've come up
# empty 3 times. Why 3? Because each flag takes 2
# arguments, and because we don't keep track of which
# one of those we're on, waiting for 3 empties ensures
# us that we've had a complete "round" with nothing.
#
# Why can't I just do i+=2, and not have to keep track
# of empties? Because, we also allow for arguments
# ending in a colon to be headings, which changes the
# offsets.
declare -i empties=0
declare -i i
for (( i=1; empties < 3; i++ )); do
local out
out="$(xgettext-sh --keyword="flag:$i,\"$i\"" "$@")"
if [[ -n $out ]]; then
printf -- '%s\n' "$out"
else
empties+=1
fi
done
} | whitespace-collapse | sed '/^\#, sh-format/d' | {
# Stage 2: Parse
#
# Read in the lines, and group them into an array of
# (multi-line) msgs. This just makes working with
# them easier.
local msgs=()
declare -i i=-1
local re='^#\. ([0-9]+)$'
IFS=''
local line
while read -r line; do
if [[ $line =~ $re ]]; then
i+=1
fi
msgs[$i]+="$line"$'\n'
done
# Stage 3: Sort
#
# Now, we have the `msgs` array, and it is
# sorted such that it is all of the arg1's to `flag`,
# then all of the arg2's, then all of the arg3's, and
# so on. We want to re-order them such that it's all
# of the args for the first invocation then all of the
# args for the second; and so on.
#
# We do this by simply sorting them by the location
# that they appear in the file. Then, when we see the
# argument number go back down to 1, we know that a
# new invocation has started!
IFS=$'\n'
local locations=($(
local i
for i in "${!msgs[@]}"; do
declare -i arg row
local lines=(${msgs[$i]})
arg=${lines[0]#'#. '}
row=${lines[1]##*:}
printf '%d.%d %d\n' "$row" "$arg" "$i"
done | sort -n
))
# Stage 4: Output
#
# Now, we prune out the arguments that aren't
# localizable. Also, remove the "#." comment lines.
# As explained above (in stage 3), when we see $arg go
# to 1, that's the beginning of a new invocation.
local expectflag=true
local location
for location in "${locations[@]}"; do
IFS=' .'
local row arg i
read -r row arg i <<<"$location"
local msg="${msgs[$i]#*$'\n'}"
# Now we operate based on $row, $arg, and $msg
if [[ $arg == 1 ]]; then
expectflag=true
fi
if $expectflag; then
IFS=$'\n'
local lines=(${msg})
if [[ ${lines[1]} == *':"' ]]; then
# We expected a flag, but got
# a heading
printf -- '%s\n' "$msg"
else
# We expected a flag, and got
# one!
expectflag=false
fi
else
printf -- '%s\n' "$msg"
expectflag=true
fi
done
}
}
whitespace-collapse() {
tr '\n' '\r' | sed 's/"\r\s*"//g' | tr '\r' '\n' | # This removes the awkward word-wrapping done by xgettext
sed -r -e 's/(\\n|\\t|\t)/ /g' -e 's/(^|[^.!? ]) +/\1 /g' -e 's/([.!?]) +/\1 /g' # This collapses whitespace
}
main() {
local simple=()
local prose=()
local files=()
local use_defaults=true
local error=false
declare -i i
for (( i=1; i <= $#; i++ )); do
case "${!i}" in
--simple) i+=1; simple+=(--keyword="${!i}");;
--simple=*) simple+=(--keyword="${!i#*=}");;
--prose) i+=1; prose+=(--keyword="${!i}");;
--prose=*) prose+=(--keyword="${!i#*=}");;
-k) use_defaults=false;;
--help|-h) usage; return 0;; # $EXIT_SUCCESS
--) i+=1; break;;
-*) errusage "unrecognized option: %s" "${!i}"; error=true;;
*) files+=("${!i}");;
esac
done
files+=("${@:$i}")
if [[ ${#files[@]} -lt 1 ]]; then
errusage "no input file given"
error=true
fi
if "$error"; then
return 1 # $EXIT_FAILURE
fi
if "$use_defaults"; then
simple+=("${default_simple[@]}")
prose+=("${default_prose[@]}")
fi
# Main code
{
xgettext-sh "${simple[@]}" -- "${files[@]}"
xgettext-sh "${prose[@]}" -- "${files[@]}" | whitespace-collapse
xgettext-flag -- "${files[@]}"
} | sed '/^\#, sh-format/d' | msguniq -Fi --to-code=UTF-8
}
main "$@"
|
