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  • Hash : 5540d947
    Author : Russell Belfer
    Date : 2013-03-15T16:39:00

    Implement global/system file search paths
    
    The goal of this work is to expose the search logic for "global",
    "system", and "xdg" files through the git_libgit2_opts() interface.
    
    Behind the scenes, I changed the logic for finding files to have a
    notion of a git_strarray that represents a search path and to store
    a separate search path for each of the three tiers of config file.
    For each tier, I implemented a function to initialize it to default
    values (generally based on environment variables), and then general
    interfaces to get it, set it, reset it, and prepend new directories
    to it.
    
    Next, I exposed these interfaces through the git_libgit2_opts
    interface, reusing the GIT_CONFIG_LEVEL_SYSTEM, etc., constants
    for the user to control which search path they were modifying.
    There are alternative designs for the opts interface / argument
    ordering, so I'm putting this phase out for discussion.
    
    Additionally, I ended up doing a little bit of clean up regarding
    attr.h and attr_file.h, adding a new attrcache.h so the other two
    files wouldn't have to be included in so many places.