.dotfiles/zsh/scripts

#--------------------------------
# filename:     /zsh/scripts
#--------------------------------

# Search for string in all files in pwd
function f() {
    grep -rnw ./ -e "$1"
}

# mkdir and cd
function mkcd() {
    mkdir -p "$@" && cd "$_";
}

# "Fake" sha256sum
if [[ ! -x `which sha256sum` ]]; then
    function sha256sum() {
        shasum -a256 $1
    }
fi

# Tar.gz with GZIP or PIGZ
function targz() {
    if [ -z "$1" ]; then
        echo "usage: targz filename.tar.gz directory"
        return
    fi
    if [[ ! -x `which pigz` ]]; then
        tar -czf $1 $2
	echo "gzip"
    else
        tar -c $2 | pigz > $1
	echo "pigz"
    fi
}

# pushover notification
function pushover() {
	curl -s \
	  --form-string "token=$pushover_token" \
	  --form-string "user=$pushover_user" \
	  --form-string "title=$HOST" \
	  --form-string "message=$1" \
	  https://api.pushover.net/1/messages.json
}

# png to jpg 85
function png2web() {
        findpath=$1
        : ${findpath:="."}
        find "$findpath" -name '*.png' | while read f ; do
            dir=$(dirname "$f");
            file=$(basename "$f");
            name="${file%.*}";
		magick convert "$f" pnm:- | cjpeg -progressive -quality 85 > "$dir/$name.jpg" </dev/null
	rm -f "$f";
    done
}

function jpeg1024() {
        magick "$1" -resize '1024x1024\>' -background black -flatten TGA:- | cjpeg -targo -quality 75 -optimize -progressive -outfile $1.jpg
}

# Make PDFs look like scanned
# src: https://gist.github.com/andyrbell/25c8632e15d17c83a54602f6acde2724?permalink_comment_id=3295405#gistcomment-3295405
function pdf-like-scanned () {
        OUT=$(basename "$1" .pdf)
        convert -density 150 "$1" -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" \
                -attenuate 0.4 +noise Multiplicative -attenuate 0.03 +noise Multiplicative -sharpen 0x1.0 \
                -colorspace Gray "$OUT"_scanned.pdf
}

# Extract files
# src: https://github.com/mawalu/dotfiles/blob/master/zsh/.zsh/functions.zsh#L21
function extract () {
    if [ -f $1 ] ; then
        case $1 in
            *.tar.bz2) tar xjf $1 ;;
            *.tar.gz) tar xzf $1 ;;
            *.bz2) bunzip2 $1 ;;
            *.rar) unrar x $1 ;;
            *.gz) gunzip $1 ;;
            *.tar) tar xf $1 ;;
            *.tbz2) tar xjf $1 ;;
            *.tgz) tar xzf $1 ;;
            *.zip) unzip $1 ;;
            *.Z) uncompress $1;;
            *.7z) 7z x $1 ;;
            *) echo "'$1' cannot be extracted via ex()" ;;
       esac
    else
        echo "'$1' is not a valid file"
    fi  
}