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copy_file: expose the copying logic (#151) 

I plan to use these functions in native_binary()
and native_test().

See https://github.com/bazelbuild/bazel-skylib/issues/148
This commit is contained in:
László Csomor 2019-05-13 16:14:33 +02:00 committed by GitHub
parent 6bf6443975
commit 6126842e3d
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1 changed files with 40 additions and 34 deletions
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74
rules/private/copy_file_private.bzl
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@ -19,43 +19,49 @@ cmd.exe (on Windows). '_copy_xfile' marks the resulting file executable,
'_copy_file' does not.
"""
def copy_cmd(ctx, src, dst):
# Most Windows binaries built with MSVC use a certain argument quoting
# scheme. Bazel uses that scheme too to quote arguments. However,
# cmd.exe uses different semantics, so Bazel's quoting is wrong here.
# To fix that we write the command to a .bat file so no command line
# quoting or escaping is required.
bat = ctx.actions.declare_file(ctx.label.name + "-cmd.bat")
ctx.actions.write(
output = bat,
# Do not use lib/shell.bzl's shell.quote() method, because that uses
# Bash quoting syntax, which is different from cmd.exe's syntax.
content = "@copy /Y \"%s\" \"%s\" >NUL" % (
src.path.replace("/", "\\"),
dst.path.replace("/", "\\"),
),
is_executable = True,
)
ctx.actions.run(
inputs = [src, bat],
outputs = [dst],
executable = "cmd.exe",
arguments = ["/C", bat.path.replace("/", "\\")],
mnemonic = "CopyFile",
progress_message = "Copying files",
use_default_shell_env = True,
)
def copy_bash(ctx, src, dst):
ctx.actions.run_shell(
inputs = [src],
outputs = [dst],
command = "cp -f \"$1\" \"$2\"",
arguments = [src.path, dst.path],
mnemonic = "CopyFile",
progress_message = "Copying files",
use_default_shell_env = True,
)
def _common_impl(ctx, is_executable):
if ctx.attr.is_windows:
# Most Windows binaries built with MSVC use a certain argument quoting
# scheme. Bazel uses that scheme too to quote arguments. However,
# cmd.exe uses different semantics, so Bazel's quoting is wrong here.
# To fix that we write the command to a .bat file so no command line
# quoting or escaping is required.
bat = ctx.actions.declare_file(ctx.label.name + "-cmd.bat")
ctx.actions.write(
output = bat,
# Do not use lib/shell.bzl's shell.quote() method, because that uses
# Bash quoting syntax, which is different from cmd.exe's syntax.
content = "@copy /Y \"%s\" \"%s\" >NUL" % (
ctx.file.src.path.replace("/", "\\"),
ctx.outputs.out.path.replace("/", "\\"),
),
is_executable = True,
)
ctx.actions.run(
inputs = [ctx.file.src, bat],
outputs = [ctx.outputs.out],
executable = "cmd.exe",
arguments = ["/C", bat.path.replace("/", "\\")],
mnemonic = "CopyFile",
progress_message = "Copying files",
use_default_shell_env = True,
)
copy_cmd(ctx, ctx.file.src, ctx.outputs.out)
else:
ctx.actions.run_shell(
inputs = [ctx.file.src],
outputs = [ctx.outputs.out],
command = "cp -f \"$1\" \"$2\"",
arguments = [ctx.file.src.path, ctx.outputs.out.path],
mnemonic = "CopyFile",
progress_message = "Copying files",
use_default_shell_env = True,
)
copy_bash(ctx, ctx.file.src, ctx.outputs.out)
files = depset(direct = [ctx.outputs.out])
runfiles = ctx.runfiles(files = [ctx.outputs.out])