1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
# Copyright 2018 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Utils for manipulating external repositories, once fetched.
### Setup
These utility are intended to be used by other repository rules. They
can be loaded as follows.
```python
load(
"@bazel_tools//tools/build_defs/repo:utils.bzl",
"workspace_and_buildfile",
)
```
"""
def workspace_and_buildfile(ctx):
"""Utility function for writing WORKSPACE and, if requested, a BUILD file.
It assumes the paramters name, build_file, and build_file_contents to be
present in ctx.attr, the latter two possibly with value None.
Args:
ctx: The repository context of the repository rule calling this utility
function.
"""
if ctx.attr.build_file and ctx.attr.build_file_content:
ctx.fail("Only one of build_file and build_file_content can be provided.")
ctx.file("WORKSPACE", "workspace(name = \"{name}\")\n".format(name=ctx.name))
if ctx.attr.build_file:
bash_exe = ctx.os.environ["BAZEL_SH"] if "BAZEL_SH" in ctx.os.environ else "bash"
ctx.execute([bash_exe, "-c", "rm -f BUILD BUILD.bazel"])
ctx.symlink(ctx.attr.build_file, "BUILD")
elif ctx.attr.build_file_content:
bash_exe = ctx.os.environ["BAZEL_SH"] if "BAZEL_SH" in ctx.os.environ else "bash"
ctx.execute([bash_exe, "-c", "rm -f BUILD.bazel"])
ctx.file("BUILD", ctx.attr.build_file_content)
def patch(ctx):
"""Implementation of patching an already extracted repository"""
bash_exe = ctx.os.environ["BAZEL_SH"] if "BAZEL_SH" in ctx.os.environ else "bash"
for patchfile in ctx.attr.patches:
command = "{patchtool} -p0 < {patchfile}".format(
patchtool=ctx.attr.patch_tool,
patchfile=ctx.path(patchfile))
st = ctx.execute([bash_exe, "-c", command])
if st.return_code:
fail("Error applying patch %s:\n%s" % (str(patchfile), st.stderr))
for cmd in ctx.attr.patch_cmds:
st = ctx.execute([bash_exe, "-c", cmd])
if st.return_code:
fail("Error applying patch command %s:\n%s%s"
% (cmd, st.stdout, st.stderr))
|
