iconsplash

#!/usr/bin/env bash
# 
# This file is part of the iconsplash distribution (https://github.com/jgleal/iconsplash).
# Copyright (c) 2015 Liviu Ionescu.
# 
# 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, version 3.
#
# 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/>.
#
function program_is_installed {
  # set to 1 initially
  local return_=1
  # set to 0 if not found
  type $1 >/dev/null 2>&1 || { local return_=0; }
  # return value
  echo "$return_"
}

if [ $(program_is_installed jq) -gt 0 ] && [ $(program_is_installed convert) -gt 0 ]; then

  function resize {
    local source=$1
    local path=$2
    local file=$3
    local width=$4
    local height=$5
    
    echo "$file ${width}x${height}"
    mkdir -p $path 
    convert $source -resize ${width}x${height}! $path/$file
  }

  lOutput=$(cat config.json | jq ".output | length")
  for (( c=0; c<$lOutput; c++ ))
  do
    o=$(cat config.json | jq ".output[$c]")
    category=$(echo $o | jq ".category" -r)
    source=$(echo $o | jq ".source" -r)
    path=$(echo $o | jq ".path" -r)
    echo "==================== $category =============================="
    lSizes=$(echo $o | jq ".sizes | length")
    for (( i=0; i<$lSizes; i++ ))
    do
      s=$(echo $o | jq ".sizes[$i]")  
      resize $source $path $(echo $s | jq ".file" -r) $(echo $s | jq ".width" -r) $(echo $s | jq ".height" -r)  
    done 
   
     
  done
else
  echo "
        ***********************************************
        **                                           **
        **  jq and/or imagemagick are not installed  ** 
        **                                           ** 
        ***********************************************
       "
fi