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"""

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    Implementations of the core CLI commands

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"""

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import log, shorturl, folder

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def main (dir='.', targets=()) :

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    """

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        Scan the given root dir for all images, and render updated ones

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    """

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    root_filter = {}

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    # parse the targets into the hierarchial root_filter that we use

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    for target in targets :

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        f = root_filter

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        for path_part in target.split('/') :

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            if path_part :

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                if path_part not in f :

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                    f[path_part] = {}

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                f = f[path_part]

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    # build the index

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    log.title("Indexing %s...", dir)

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    root = folder.Folder(dir)

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    root.index(root_filter)

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    log.up()

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    # XXX: maintain shorturls stuff

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    if False :

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        log.title("Syncing ShortURLs...")

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        shorturl.updateDB(root)

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        log.up()

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    # render output

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    log.title("Rendering updated dirs...")

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    root.render()

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    log.up()

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    return 0

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