Script for continuously previewing graphviz dot files using dot2tex.

dotpvc

#!/bin/bash

# Script for continuously previewing graphviz dot files using dot2tex.

# Copyright (c) 2015, Lev Givon
# All rights reserved
# Distributed under the terms of the BSD license:
# http://www.opensource.org/licenses/bsd-license

SCRIPT_NAME=`basename $0`
USAGE="Usage: $SCRIPT_NAME [-h] [-s] [dot2tex options] <input.dot>\n\nPreview graphviz dot file using dot2tex."

function cleanup() {
    FILE_BASE=$1
    PID=$2
    kill -TERM $PID
    latexmk -c $FILE_BASE
    rm -f $FILE_BASE.pdf
    rm -f $FILE_BASE.tex
    exit 0
}

if ! [[ `which inotifywait` ]]; then
    echo "inotifywait not found"
    exit 1
fi

if ! [[ `which dot2tex` ]]; then
    echo "dot2tex not found"
    exit 1
elif ! [[ `which latexmk` ]]; then
    echo "latexmk not found"
    exit 1
else
    if [[ $# == 0 ]]; then
        echo -e $USAGE
        exit 0
    fi
    DOT_FILE=''
    OTHER_ARGS=''
    for arg in $@; do
        if [[ $arg =~ ^\-h$ ]]; then
            echo -e $USAGE
            exit 0
        elif [[ $arg =~ ^\-S$ ]]; then
	    SAVE=1
        elif [[ $arg =~ ^.*\.dot$ ]]; then
            DOT_FILE=$arg
        else
            OTHER_ARGS="$OTHER_ARGS $arg"
        fi
    done
    if [[ $DOT_FILE =~ ^\ *$ ]]; then
        echo no .dot file specified
        exit 1
    fi
    if ! [[ -e $DOT_FILE ]]; then
        echo $DOT_FILE not found
        exit 1
    fi
    FILE_BASE=`basename -s .dot $DOT_FILE`
    TEX_FILE=$FILE_BASE.tex
    dot2tex $OTHER_ARGS $DOT_FILE -o $TEX_FILE
    if [[ $SAVE == 1 ]]; then
        latexmk -pdf $TEX_FILE
	latexmk -c $FILE_BASE
    else
        latexmk -pvc -pdf -interaction=nonstopmode $TEX_FILE &

        # Clean up files created by dot2tex and latexmk:
        trap "cleanup $FILE_BASE $!" SIGINT

        # Rerun dot2tex when the dot file changes; need to run additional
        # outer loop because inotifywait exits after a move_self event
        # (which will occur if the dot file is edited with applications
        # such as vim):
        while true; do
            while inotifywait -qq $DOT_FILE; do
                dot2tex $OTHER_ARGS $DOT_FILE -o $TEX_FILE
            done
        done
    fi
fi