MasterPassword/Scripts/convertImages

#! /usr/bin/env bash
source bashlib
cd "${0%/*}/../MasterPassword/Resources/Media"
PATH+=:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin
temp="${TMPDIR:-/tmp}/.$$.convertImages"
mkdir "$temp" || err "Couldn't create temp directory." || return
trap 'rmdir "$temp"' EXIT

downsize() {
    local from=$1 to=$2 size=${3:-50%}
    convert "$from" -filter box -resize "$size" -unsharp 1x1+1+0.4 "$to"
    pngcrush -d "$temp" -rem gAMA -rem cHRM -rem sRGB -rem iCCP "$to" && mv "$temp/"* "$to"
}



inf "Converting appiconsets"
declare -A icons=(
    ["ios-Icon-60@2x.png"]=120
    ["ios-Icon-40@2x.png"]=80
    ["ios-Icon-40~ipad.png"]=40
    ["ios-Icon-40~ipad@2x.png"]=80
    ["ios-Icon-Small@2x.png"]=58
    ["ios-Icon-Small~ipad.png"]=29
    ["ios-Icon-Small~ipad@2x.png"]=58
    ["ios-Icon-76~ipad.png"]=76
    ["ios-Icon-76~ipad@2x.png"]=152
    ["mac-icon_512x512.png"]=512
    ["mac-icon_512x512@2x.png"]=1024
    ["mac-icon_256x256@2x.png"]=512
    ["mac-icon_256x256.png"]=256
    ["mac-icon_128x128@2x.png"]=256
    ["mac-icon_128x128.png"]=128
    ["mac-icon_32x32@2x.png"]=64
    ["mac-icon_32x32.png"]=32
    ["mac-icon_16x16@2x.png"]=32
    ["mac-icon_16x16.png"]=16
)
for name in "${!icons[@]}"; do
    size=${icons[$name]}
    source=${name%%-*}-icon@2x.png
    file=Images.xcassets/AppIcon.appiconset/${name#*-}
    echo "$PWD/$file"

    if [[ $source -nt $file ]]; then
        pinf "$file ($size px)"
            downsize "$source" "$file" "${size}x${size}"
        fnip
    fi
done



hr
inf "Converting @2x/-hd artwork"
for file in ./**/*{@2x,-ipadhd,-hd}.png; do
    inArray "${file##*/}" "${icons[@]}" && continue
    [[ ! -e $file ]] && continue

    dest=${file/@(@2x|-hd)}
    dest=${dest/-ipadhd/-ipad}

    if [[ $file = Default* ]]; then
        read width height < <(identify -format '%w %h' "$file")
        if (( width > height )); then
            emit "Rotating $file" --
                mogrify -rotate 90 "$file"
            emit -$?
        fi
    fi
    if [[ ! -e $dest || "$dest" -ot "$file" ]]; then
        pinf "$file -> $dest"
            downsize "$file" "$dest"
        fnip
    fi
done