Script to semi-automate https://phabricator.wikimedia.org/T150618

to-hd-logos.sh

#!/bin/sh

# Formatting helpers

RED=$'\e[31m'
GREEN=$'\e[32m'
NORMAL=$'\e[0m'

redEcho() { echo "$RED$1$NORMAL"; }
greenEcho() { echo "$GREEN$1$NORMAL"; }

# Main

if [ ! -d static/images/project-logos ]; then
    redEcho "Please run this script from the root of your 'mediawiki-config' clone."
    exit 1
fi

for file in "$@"; do
    filename=$(basename "$file")

    projectName="${filename%.*}"

    if [ ! -r "static/images/project-logos/$projectName.png" ]; then
        redEcho "$projectName doesn't have a 1x png in static/images/project-logos. Skipping."
        continue
    fi

    oneAndHalfOut="static/images/project-logos/$projectName-1.5x.png"
    doubleOut="static/images/project-logos/$projectName-2x.png"

    if [ -e "$oneAndHalfOut" ] || [ -e "$doubleOut" ]; then
        redEcho "$filename already has -1.5x and/or -2x logos in static/images/project-logos. Skipping."
        continue
    fi

    extension="${filename##*.}"

    if [ ! "$extension" = 'svg' ]; then
        echo "$filename is an svg file. Skipping."
        continue
    fi

    originalSize=$(file static/images/project-logos/$projectName.png | cut -d ':' -f 2 | cut -d ',' -f 2 | tr -d ' ')
    originalWidth=$(echo "$originalSize" | cut -d 'x' -f 1)
    originalHeight=$(echo "$originalSize" | cut -d 'x' -f 2)

    # 1.5×
    oneAndHalfWidth=$(( (originalWidth * 3 ) / 2 ))
    oneAndHalfHeight=$(( (originalHeight * 3 ) / 2 ))

    convert -resize "${oneAndHalfWidth}x$oneAndHalfHeight" "$file" "$oneAndHalfOut"
    if [ "$?" -eq 0 ]; then
        greenEcho "Created $(basename $oneAndHalfOut) (${oneAndHalfWidth}×$oneAndHalfHeight)"
    else redEcho "Some error occurred :("; fi

    # 2×
    doubleWidth=$(( originalWidth * 2 ))
    doubleHeight=$(( originalHeight * 2 ))

    convert -resize "${doubleWidth}x$doubleHeight" "$file" "$doubleOut"
    if [ "$?" -eq 0 ]; then
        greenEcho "Created $(basename $doubleOut) (${doubleWidth}×$doubleHeight)"
    else redEcho "Some error occurred :("; fi

    # Optimisation
    optipng -o7 "$oneAndHalfOut" "$doubleOut"
    if [ "$?" -eq 0 ]; then
        greenEcho "Optimised $(basename $oneAndHalfOut) and $(basename $doubleOut)"
    else redEcho "Some error occurred :("; fi
done