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Program Description =================== When run from within a git working tree, this python script generates a directed acyclic graph (DAG) of the hierarchy of all tags and branches present in the git repository. It uses an easy-to-write Graphviz syntax to output the graph data for the repository. The output will then be processes by the Graphviz `dot' utility to convert it to a picture in various formats, e.g. SVG or PNG. Installation ============ You just need a working Python installation on your machine. If you want to convert the output to an actual image, you'll also have to install the `graphviz' tool. (To check whether this tool is installed, perform a call to `dot -V' and check if there's something about the Graphviz version.) Usage ===== Generate SVG graph of ~/git-repo/.git and view the result in firefox: $ ./git-big-picture -f svg -v firefox ~/git-repo/.git (Please note that you'll have to append '.git' to the working tree path, because git stores its files in that directory. If you omit the argument, the script will operate on the git repository you are currently in.) Generate PNG version of current git directory and save to 'our-project.png': $ ./git-big-picture -f png -o our-project.png Manually pipe the Graphviz commands to the `dot' utility: $ ./git-big-picture ~/git-repository/.git | dot -Tpng -o graph.png (Without options, the script has a simple plaintext output mode which is understood by `dot'. For further information see `man dot') If you specify a custom format, but neither a viewer nor an output file, the script will output the image to stdout. That is to enable you to use it in shell scripts and pipe the result (for example a gzipped SVG version) to another program. Git Integration =============== You can easily integrate this script as a regular git command. Simply copy the script to one of the directories listed in your $PATH (ideally, to $HOME/bin). Then you can use `git big-picture' from any git directory: $ git big-picture -f pdf -v xpdf -o visualization.pdf This will present you with a PDF viewer displaying your project's graph, and stores this PDF in a file called `visualization.pdf'.