.functions

.functions

# Create a new directory and enter it
function md() {
        mkdir -p "$@" && cd "$@"
}

# Use Git’s colored diff when available
hash git &>/dev/null
if [ $? -eq 0 ]; then
        function diff() {
                git diff --no-index --color-words "$@"
        }
fi

# Create a data URL from an image (works for other file types too, if you tweak the Content-Type afterwards)
dataurl() {
        echo "data:image/${1##*.};base64,$(openssl base64 -in "$1")" | tr -d '\n'
}

# Start an HTTP server from a directory, optionally specifying the port
function server() {
        local port="${1:-8000}"
        open "http://localhost:${port}/"
        # Set the default Content-Type to `text/plain` instead of `application/octet-stream`
        # And serve everything as UTF-8 (although not technically correct, this doesn’t break anything for binary files)
        python -c $'import SimpleHTTPServer;\nmap = SimpleHTTPServer.SimpleHTTPRequestHandler.extensions_map;\nmap[""] = "text/plain";\nfor key, value in map.items():\n\tmap[key] = value + ";charset=UTF-8";\nSimpleHTTPServer.test();' "$port"
}

# Test if HTTP compression (RFC 2616 + SDCH) is enabled for a given URL.
# Send a fake UA string for sites that sniff it instead of using the Accept-Encoding header. (Looking at you, ajax.googleapis.com!)
function httpcompression() {
        encoding="$(curl -LIs -H 'User-Agent: Mozilla/5 Gecko' -H 'Accept-Encoding: gzip,deflate,compress,sdch' "$1" | grep '^Content-Encoding:')" && echo "$1 is encoded using ${encoding#* }" || echo "$1 is not using any encoding"
}

# Gzip-enabled `curl`
function gurl() {
        curl -sH "Accept-Encoding: gzip" "$@" | gunzip
}

# Syntax-highlight JSON strings or files
function json() {
        if [ -p /dev/stdin ]; then
                # piping, e.g. `echo '{"foo":42}' | json`
                python -mjson.tool | pygmentize -l javascript
        else
                # e.g. `json '{"foo":42}'`
                python -mjson.tool <<< "$*" | pygmentize -l javascript
        fi
}

# All the dig info
function digga() {
        dig +nocmd "$1" any +multiline +noall +answer
}

# Escape UTF-8 characters into their 3-byte format
function escape() {
        printf "\\\x%s" $(printf "$@" | xxd -p -c1 -u)
        echo # newline
}

# Decode \x{ABCD}-style Unicode escape sequences
function unidecode() {
        perl -e "binmode(STDOUT, ':utf8'); print \"$@\""
        echo # newline
}

# Get a character’s Unicode code point
function codepoint() {
        perl -e "use utf8; print sprintf('U+%04X', ord(\"$@\"))"
        echo # newline
}