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|
#!/bin/bash
#
# This script is intended to be executed from Poedit
# See instructions in lang/README.
#
# As long as the xml files are well-formed XML documents with
# entry blocks like the following one (from scheme.xml) this
# script should have no problems extracting the strings.
# <entry ...>
# <short>Karaoke mode</short>
# <long>Hide pitch wave, notes and scoring.</long>
# </entry>
# adds a line to the temporary source file
append_temp_src(){
echo "$*" >> "$TEMP_SRC"
}
# match <entry, ignoring allowed whitespace.
match_entry_start(){
echo "$1" | grep -qE '^[[:space:]]*<[[:space:]]*entry.*>[[:space:]]*$'
return $?
}
# match </entry>, ignoring allowed whitespace.
match_entry_end(){
echo "$1" | grep -qE '^[[:space:]]*<[[:space:]]*/[[:space:]]*entry>[[:space:]]*$'
return $?
}
# matches lines with <$1>...</$1>, ignoring allowed whitespace.
match_simple_tag(){
echo "$2" | grep -qE "^[[:space:]]*<[[:space:]]*$1[[:space:]]*>.*</[[:space:]]*$1[[:space:]]*>[[:space:]]*$"
return $?
}
# <abc>def</abc> -> _("def")
# Note: every " is automatically replaced by \". This is what you want, not
# invalid C code.
transform_simple_tag_to_keyworded_string(){
echo "$1" | sed -re 's:\":\\\":g' -e 's:^[[:space:]]*<[[:space:]]*([a-z]+)[[:space:]]*>(.*)<[[:space:]]*/[[:space:]]*\1[[:space:]]*>[[:space:]]*$:_("\2"):'
}
transform_and_add_string(){
append_temp_src "$(transform_simple_tag_to_keyworded_string "$1")"
}
# transform <short/> and <long/> lines to _() lines
process_locale_block_line(){
match_simple_tag "short" "$1" && transform_and_add_string "$1"
match_simple_tag "long" "$1" && transform_and_add_string "$1"
}
process_xml(){
IN_BLOCK=0
line_no=0
cat "$1" | while read line
do
line_no=$(($line_no + 1))
# A simple 2-state automata, either we're in a <entry/>-block
# or we're not. Limited detection and bail-out on malformed XML
if [[ $IN_BLOCK -eq 1 ]] ; then
match_entry_end "$line"
if [[ $? -eq 0 ]] ; then
IN_BLOCK=0
else
process_locale_block_line "$line"
fi
# <entry...> with out </entry> found:
match_entry_start "$line" && (echo "Malformed XML $file:$line_no: Opening entry-tag found while already inside an entry block." >&2 ;exit -1)
else
# </entry> with out <entry> found:
match_entry_end "$line" && (echo "Malformed XML $file:$line_no:: Closing entry-tag without prior opening tag." >&2 ;exit -1)
match_entry_start "$line"
if [[ $? -eq 0 ]] ; then
IN_BLOCK=1
fi
fi
done
}
if [[ $# -lt 2 ]] ; then
echo "USAGE: $0 <output file> <input encoding> [files...]"
exit -1
elif [[ $# -eq 2 ]] ; then
# no input files nothing to do
exit 0
fi
POEDIT_FILE="$1"
ENC="$2"
shift
shift
# create the temporary file securely.
TEMP_SRC="$(mktemp -t xml2gettext.XXXXXXXXXX)"
append_temp_src "/* This is a automatically generated temp file, it's safe to remove */"
# Start the dirty work
for file in $* ; do
process_xml "$file"
done
# Invoke xgettext, poedit will merge this with the rest of the strings
xgettext --force-po --language=C -o "$POEDIT_FILE" --from-code="$ENC" -k_ "$TEMP_SRC"
RV=$?
# clean up
rm "$TEMP_SRC"
exit $RV
|
