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Fix bazelbuild/bazel#14500 #3

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Dec 30, 2021
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60 changes: 18 additions & 42 deletions third_party/bazel_tools/tools/cpp/runfiles/runfiles.cc
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@
// * Removed item 1 from the usage comment.
// * Modified the include path of the corresponding header.
// * Added the changes of https://github.com/bazelbuild/bazel/pull/14335.
// * Fixed https://github.com/bazelbuild/bazel/issues/14500 by reverting
// https://github.com/bazelbuild/bazel/commit/bfdfa6ebfd21b388f1c91f512291c848e1a92a96.

#include "runfiles.h"

Expand Down Expand Up @@ -317,71 +319,45 @@ bool PathsFrom(const string& argv0, string mf, string dir,
out_manifest->clear();
out_directory->clear();

string existing_mf = mf;
string existing_dir = dir;
bool mfValid = is_runfiles_manifest(mf);
bool dirValid = is_runfiles_directory(dir);

// if argv0 is not empty, try to use it to find the runfiles manifest
// file/directory paths
if (!argv0.empty()) {
if (!argv0.empty() && !mfValid && !dirValid) {
mf = argv0 + ".runfiles/MANIFEST";
dir = argv0 + ".runfiles";
if (!is_runfiles_manifest(mf)) {
mfValid = is_runfiles_manifest(mf);
dirValid = is_runfiles_directory(dir);
if (!mfValid) {
mf = argv0 + ".runfiles_manifest";
mfValid = is_runfiles_manifest(mf);
}
PathsFrom(mf, dir, is_runfiles_manifest, is_runfiles_directory,
out_manifest, out_directory);
}

// if the runfiles manifest file/directory paths are not found, use existing
// mf and dir to find the paths
if (out_manifest->empty() && out_directory->empty()) {
return PathsFrom(existing_mf, existing_dir, is_runfiles_manifest,
is_runfiles_directory, out_manifest, out_directory);
}

return true;
}

bool PathsFrom(const std::string& runfiles_manifest,
const std::string& runfiles_directory,
function<bool(const std::string&)> is_runfiles_manifest,
function<bool(const std::string&)> is_runfiles_directory,
std::string* out_manifest, std::string* out_directory) {
out_manifest->clear();
out_directory->clear();


std::string mf = runfiles_manifest;
std::string dir = runfiles_directory;

bool mf_valid = is_runfiles_manifest(mf);
bool dir_valid = is_runfiles_directory(dir);

if (!mf_valid && !dir_valid) {
if (!mfValid && !dirValid) {
return false;
}

if (!mf_valid) {
if (!mfValid) {
mf = dir + "/MANIFEST";
mf_valid = is_runfiles_manifest(mf);
if (!mf_valid) {
mfValid = is_runfiles_manifest(mf);
if (!mfValid) {
mf = dir + "_manifest";
mf_valid = is_runfiles_manifest(mf);
mfValid = is_runfiles_manifest(mf);
}
}

if (!dir_valid &&
if (!dirValid &&
(ends_with(mf, ".runfiles_manifest") || ends_with(mf, "/MANIFEST"))) {
static const size_t kSubstrLen = 9; // "_manifest" or "/MANIFEST"
dir = mf.substr(0, mf.size() - kSubstrLen);
dir_valid = is_runfiles_directory(dir);
dirValid = is_runfiles_directory(dir);
}

if (mf_valid) {
if (mfValid) {
*out_manifest = mf;
}

if (dir_valid) {
if (dirValid) {
*out_directory = dir;
}

Expand Down