po2txt

po2txt.sh

#!/bin/sh

output=""
inside_msgstr=0
newline=""

add_newline_to_output() {
  if [ -z "$output" ]; then
    output="${newline}\n"
  else
    output="${output}${newline}\n"
  fi;
}

while read line; do
  if [ -z "$line" ]; then
    if [ "$inside_msgstr" -eq "1" ]; then
      add_newline_to_output
      inside_msgstr=0
      newline=""
    fi;
    continue
  fi;
  command="$(printf '%s' "$line" | cut -c -8)"
  first_char="$(echo "$line" | cut -c 1)"
  msgstr=""
  if [ "$command" = 'msgstr "' ]; then
    inside_msgstr=1
    msgstr="$(printf '%s' "$line" | cut -c 9-)"
  elif [ "$inside_msgstr" -eq 1 ] && [ "$first_char" = '"' ]; then
    msgstr="$(printf '%s' "$line" | cut -c 2-)"
  else
   inside_msgstr=0
   newline=""
   continue
  fi;
  newline="$newline$(printf '%s' "$msgstr" | rev | cut -c 2- | rev)"
  if [ -z "$newline" ]; then
    continue
  fi;
done < $1

add_newline_to_output

echo "$output" > $2