Bazel client: generalize path handling

Use/implement utility methods to join paths, check
if they are the root directory or are absolute,
etc. Doing so (instead of say checking if a path
starts with "/") allows for correct behavior on
Windows.

See https://github.com/bazelbuild/bazel/issues/2107

--
PiperOrigin-RevId: 142446027
MOS_MIGRATED_REVID=142446027

1 files changed, 6 insertions, 0 deletions

diff --git a/src/main/cpp/util/file_platform.h b/src/main/cpp/util/file_platform.h
index 78322dfeb8..e6df884ea0 100644
--- a/src/main/cpp/util/file_platform.h
+++ b/src/main/cpp/util/file_platform.h
@@ -69,6 +69,12 @@ bool CanAccess(const std::string& path, bool read, bool write, bool exec);
 // Returns true if `path` refers to a directory or a symlink/junction to one.
 bool IsDirectory(const std::string& path);
 
+// Returns true if `path` is the root directory or a Windows drive root.
+bool IsRootDirectory(const std::string &path);
+
+// Returns true if `path` is absolute.
+bool IsAbsolute(const std::string &path);
+
 // Calls fsync() on the file (or directory) specified in 'file_path'.
 // pdie() if syncing fails.
 void SyncFile(const std::string& path);