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#!/usr/bin/python
# Copyright (c) 2012 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Recipes for NativeClient toolchain packages.
The real entry plumbing is in toolchain_main.py.
"""
import fnmatch
import os
import optparse
import process
import shutil
import StringIO
import sys
def Mkdir(path):
if path[-1] == '/':
path = path[:-1]
head, tail = os.path.split(path)
if not head:
head = '.'
if not os.path.islink(path) and not os.path.exists(path):
if not os.path.exists(head):
Mkdir(head)
os.mkdir(path)
def Rmdir(path):
if os.path.exists(path):
print "Removing: " + path
shutil.rmtree(path)
def Symlink(srcpath, dstpath):
if os.path.islink(dstpath):
linkinfo = os.readlink(dstpath)
if linkinfo == srcpath:
return False
Rmdir(dstpath)
os.symlink(srcpath, dstpath)
return True
def AcceptMatch(name, paterns, filters):
for pat in filters:
if fnmatch.fnmatch(name, pat):
return False
for pat in paterns:
if fnmatch.fnmatch(name, pat):
return True
return False
def UpdateText(dstpath, text):
if os.path.exists(dstpath):
old = open(dstpath, 'r').read()
if old == text:
return False
Mkdir(os.path.dirname(dstpath))
with open(dstpath, 'w') as f:
f.write(text)
return True
def UpdateFile(srcpath, dstpath, verbose=False):
if verbose:
print '%s -> %s\n' % (dstpath, srcpath)
shutil.copy(srcpath, dstpath)
def NeedsUpdate(src, dst):
if not os.path.exists(dst):
return True
stime = os.path.getmtime(src)
dtime = os.path.getmtime(dst)
return (stime > dtime)
def CopyOrLinkNewer(src, dst):
if not NeedsUpdate(src, dst):
return False
if os.path.islink(src):
linkinfo = os.readlink(src)
if os.path.islink(dst):
if os.readlink(dst) == linkinfo:
return False
os.remove(dst)
os.symlink(linkinfo, dst)
else:
UpdateFile(src, dst)
return True
def UpdateFromTo(src, dst, paterns=['*'], filters=[]):
if os.path.isfile(src):
if not AcceptMatch(src, paterns, filters):
return False
Mkdir(os.path.dirname(dst))
return CopyOrLinkNewer(src, dst)
if not os.path.isdir(src):
print "SRC does not exist, skipping: " + src
return False
pathlen = len(os.path.abspath(src))
modified = False
path_offs = len(src)
for root, dirs, files in os.walk(src, followlinks=False):
relroot = root[path_offs+1:]
dstdir = os.path.join(dst, relroot)
srcdir = root
# Don't travel down symlinks
if os.path.islink(root):
continue
# Don't travel down filtered directories
if not AcceptMatch(srcdir, paterns=['*'], filters=filters):
continue
Mkdir(dstdir)
for filename in files:
srcpath = os.path.join(srcdir, filename)
dstpath = os.path.join(dstdir, filename)
if not AcceptMatch(srcpath, paterns, filters):
continue
if CopyOrLinkNewer(srcpath, dstpath):
print " %s -> %s" % (srcpath, dstpath)
modified = True
for filename in dirs:
srcpath = os.path.abspath(os.path.join(root, filename))
dstrel = os.path.abspath(os.path.join(root, filename))[pathlen+1:]
dstpath = os.path.join(dst, dstrel)
if os.path.islink(srcpath):
if CopyOrLinkNewer(srcpath, dstpath):
modified = True
print " %s -> %s" % (srcpath, dstpath)
if modified:
print "Update From To %s -> %s" % (src, dst)
return modified
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