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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:44:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:44:22 +0000 |
commit | f866ab5a13eace05b4850480663aba7f605841c4 (patch) | |
tree | 1459b24f43702a2658ffa4751800bdac970ba54f /third_party/waf/waflib/Tools/md5_tstamp.py | |
parent | Initial commit. (diff) | |
download | talloc-upstream.tar.xz talloc-upstream.zip |
Adding upstream version 2.4.0.upstream/2.4.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/waf/waflib/Tools/md5_tstamp.py | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/third_party/waf/waflib/Tools/md5_tstamp.py b/third_party/waf/waflib/Tools/md5_tstamp.py new file mode 100644 index 0000000..d1569fa --- /dev/null +++ b/third_party/waf/waflib/Tools/md5_tstamp.py @@ -0,0 +1,41 @@ +#! /usr/bin/env python +# encoding: utf-8 + +""" +Re-calculate md5 hashes of files only when the file time have changed:: + + def options(opt): + opt.load('md5_tstamp') + +The hashes can also reflect either the file contents (STRONGEST=True) or the +file time and file size. + +The performance benefits of this module are usually insignificant. +""" + +import os, stat +from waflib import Utils, Build, Node + +STRONGEST = True + +Build.SAVED_ATTRS.append('hashes_md5_tstamp') +def h_file(self): + filename = self.abspath() + st = os.stat(filename) + + cache = self.ctx.hashes_md5_tstamp + if filename in cache and cache[filename][0] == st.st_mtime: + return cache[filename][1] + + if STRONGEST: + ret = Utils.h_file(filename) + else: + if stat.S_ISDIR(st[stat.ST_MODE]): + raise IOError('Not a file') + ret = Utils.md5(str((st.st_mtime, st.st_size)).encode()).digest() + + cache[filename] = (st.st_mtime, ret) + return ret +h_file.__doc__ = Node.Node.h_file.__doc__ +Node.Node.h_file = h_file + |