Installing WordPress language files automatically

Created:20 May 2017 22:03:03 , in  Web development

A script for installing WordPress language files automatically.

Automated WordPress language files installation

#! /usr/bin/env bash

# Script: get_wp_lang_mp.sh 
# Description: download and save WordPress .mo file automatically
# Author : Sylwester Wojnowski
# WWW : wojnowski.net.pl
# 
# USAGE : get_wp_lang_mp.sh -v WP_VERSION -l LANG_REGION [-d SAVETO]
#   WP_VERSION is two digits separated with full stop: 2.3, 4.0, 4.7 etc.
#   LANG_REGION is language code: pl, gr or language_region: en_BR, pt_BR
#   SAVETO is existing, writeable by the script directory on the system
 

WP_VERSION= 
LANG_REGION=
SAVETO=$(pwd)
ERRORS=(
 "curl tool not found. This program relies on curl for uploads. Install it and try again.\n"
 "Incorrect WordPress version specified."
 "Incorrect language or language_region specified."
 "Incomplete input specified."
 "Language file download failed.\nIncorrect language and region specified.\n" 
)

help(){
  scriptname=$(basename "$0")
  printf "\n$scriptname - download and save WordPress .mo file automatically\n"
  printf "  Synopsis: $scriptname -v WP_VERSION -l LANG_REGION [-d SAVETO]\n"
  printf "  Example: Download .mo file for WordPress 4.7.x and Polish language\n"
  printf "    $scriptname -v 4.7 -l pl [-d SAVETO]\n"
  printf "  Example: Download .mo file for WordPress 4.7.x and Canadian English language\n"
  printf "    $scriptname -v 4.7 -l en_CA [-d SAVETO]\n\n"
}

bail(){
  printf "ERROR: ${ERRORS[$1]}";
  help
}

check_prereqs(){
  [[ -z $(which curl) ]] && {
    bail 0
    exit 1 
  }
}

validate_input(){
  local OPTIND name
  while getopts "v:l:d:" name; do
    case "$name" in
      v)
        vreg='^[0-9]{1,}.[0-9]$';
        [[ $OPTARG =~ $vreg  ]] && {
          WP_VERSION="$OPTARG"
        } || { bail 1; exit 1; };; 
      l) 
        lreg='^[a-z]{2}(_[a-z]{2})?$';
        OPTARG=${OPTARG,,} 
        [[ $OPTARG =~ $lreg  ]] && {
          LANG_REGION="$OPTARG"
        } || { bail 2; exit 1; };;
      d)
        [[ -d "$OPTARG" ]] && {
           SAVETO="${OPTARG%/}"
        };;
      ?)
       help
       exit 1;
    esac
  done 

  [[ -z "$WP_VERSION" ]] || [[ -z "$LANG_REGION" ]] && { bail 3; exit 1; }
}

get(){
  FILENAME=
  OLR=
  ULR=${LANG_REGION/_/-}
  
  (( "${#LANG_REGION}" == 2 )) && {    
    OLR="${LANG_REGION}_${LANG_REGION^^}"
  }

  (( "${#LANG_REGION}" == 5 )) && {
    IFS=_ read -r -a pts <<< "${LANG_REGION}"    
    OLR="${pts[0]}_${pts[1]^^}";
  }
  
  FILENAME="$SAVETO/$OLR.mo"

  curl -G -d format=mo  https://translate.wordpress.org/projects/wp/"$WP_VERSION".x/"${ULR}"/default/export-translations > "$FILENAME"

  [[ $(file -b --mime-type "$FILENAME" ) != 'application/octet-stream'  ]] && {
    [[ -f "$FILENAME" ]] { rm "$FILENAME"; }
    bail 4
    exit 1      
  } || { printf "Language file saved to $FILENAME.\n";}   
}

check_prereqs 
validate_input "$@"
get    

Run it

get_wp_lang_mp.sh -l en_AU -v 4.7 -d /var/www/wordpress/wp-content  

Following code will download language file for English language and Australia and save it in WordPress installation languages directory placed in /var/www/wordpress/wp-content/languages Output language file will be called en_AU.mo .

For majority of languages, like Polish language for example, that are used in just one region of the world, you need no region:

get_wp_lang_mp.sh -l pl -v 4.7 -d /var/www/wordpress/wp-content

For the unfocused, option -l received pl instead of pl_PL as its argument in the example above.

This post was updated on 06 Oct 2021 21:46:59

Tags:  BASH ,  wordpress