entrypoint.sh

#!/bin/bash

cd "${GITHUB_WORKSPACE}" || exit
cd "${INPUT_PATH}" || exit 1

FORMATS=( `echo ${INPUT_FORMATS} | tr -s ',' ' '` )

echo "Requirements:"
echo "      dpi: ${INPUT_DPI}"
echo "    pixel: ${INPUT_PIXEL_LIMIT}"
echo "  formats: ${INPUT_FORMATS}"
echo " longside: ${INPUT_LONGSIDE}"

export RESULT=0

test() {
    FORMAT=$(identify -format %m "$1")
    if [ $? != 0 ]; then
        return
    fi
    X_DPI_=$(identify -units PixelsPerInch -format %x "$1")
    Y_DPI_=$(identify -units PixelsPerInch -format %y "$1")
    X_DPI=$(echo "${X_DPI_}" | awk '{printf("%d",$1 + 0.5)}')
    Y_DPI=$(echo "${Y_DPI_}" | awk '{printf("%d",$1 + 0.5)}')
    W=$(identify -format %w "$1")
    H=$(identify -format %h "$1")
    PIXEL=$(( $W * $H ))

    echo "$1"

    if [ -n "$INPUT_FORMATS" ]; then
        if [[ ! " ${FORMATS[*]} " =~ ${FORMAT} ]]; then
            echo "::${INPUT_LEVEL} file=$1:: $1: format $FORMAT, required $INPUT_FORMATS."
            export RESULT=1
        fi
    fi
    if [ "$INPUT_DPI" != "0" ]; then
        if [ "$X_DPI" != "${INPUT_DPI}" ]; then
            echo "::${INPUT_LEVEL} file=$1:: $1: x dpi $X_DPI, required $INPUT_DPI."
            export RESULT=1
        fi
        if [ "$Y_DPI" != "${INPUT_DPI}" ]; then
            echo "::${INPUT_LEVEL} file=$1:: $1: y dpi $Y_DPI, required $INPUT_DPI."
            export RESULT=1
        fi
    fi
    if [ "$INPUT_PIXEL_LIMIT" != "0" ]; then
        if [ "$PIXEL" -gt "${INPUT_PIXEL_LIMIT}" ]; then
            echo "::${INPUT_LEVEL} file=$1:: $1: pixel $PIXEL, limit to < $INPUT_PIXEL_LIMIT."
            export RESULT=1
        fi
    fi
    if [ "$INPUT_LONGSIDE" != "0" ]; then
        if [ "$W" -lt "${INPUT_LONGSIDE}" ]; then
        if [ "$H" -lt "${INPUT_LONGSIDE}" ]; then
            echo "::${INPUT_LEVEL} file=$1:: $1: longside ($W x $H), limit to >= $INPUT_LONGSIDE."
            export RESULT=1
        fi
        fi
    fi
}

for f in $(find . -type f); do
    test $f
done

if "${INPUT_ALWAYS_SUCCESS}"; then
    exit 0
fi

exit $RESULT