Generate a syntax-highlighted code snippet for Twitter

tweet-syntax

#!/bin/bash -e
#
# tweet-syntax - Create a syntax-highighted PNG file of your code and save in /tmp
#
# Prerequisites:
#   pip install --upgrade pygments pillow
#   'Source Code Pro' font (or change the script below)
#
# Usage: cat code.ext | tweet-syntax [<syntax>]

# Default to python if input syntax not specified:
if [[ -z ${1} ]]; then
    # If you don't provide syntax, attempt to guess from content:
    # (this usually doesn't work)
    syntax_flag="-g"
else
    syntax_flag="-l ${1}"
fi

# Create a uniqifier:
uu=$(uuidgen | tr '[:upper:]' '[:lower:]' | cut -c '1-8')

# Work out where to store the output:
path=/tmp/code-example-${uu}.png

# Generate an image at $path from stdin:
pygmentize \
    ${syntax_flag} \
    -f img \
    -O "font_name=Source Code Pro,line_numbers=False,font_size=28,style=vs" \
    -o "$path"
open "$path"          # Display the resulting image (on OSX)
open -R "$path"       # Show the image file in the Finder (on OSX)
echo -n "$path" | pbcopy # Copy the path into the pasteboard (on OSX)
echo "$path copied to clipboard"

This script was written for OSX, but by replacing calls to pbcopy and open with equivalents on other platforms (or just removing the calls) it should be easily portable to other systems.