CacheDir.py 文件源码

def CacheRetrieveFunc(target, source, env):
    t = target[0]
    fs = t.fs
    cd = env.get_CacheDir()
    cachedir, cachefile = cd.cachepath(t)
    if not fs.exists(cachefile):
        cd.CacheDebug('CacheRetrieve(%s):  %s not in cache\n', t, cachefile)
        return 1
    cd.CacheDebug('CacheRetrieve(%s):  retrieving from %s\n', t, cachefile)
    if SCons.Action.execute_actions:
        if fs.islink(cachefile):
            fs.symlink(fs.readlink(cachefile), t.get_internal_path())
        else:
            env.copy_from_cache(cachefile, t.get_internal_path())
        st = fs.stat(cachefile)
        fs.chmod(t.get_internal_path(), stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
    return 0