From: Nguyễn Thái Ngọc Duy Date: Thu, 11 Feb 2010 14:43:21 GMT Subject: [PATCH 3/5] Add is_root_path() Message-ID: <1265899403-15904-4-git-send-email-pclouds@gmail.com> In-Reply-To: <1265899403-15904-1-git-send-email-pclouds@gmail.com> This function returns the length of the root part of a path, or zero if there is no root. "The root part" is the leading slash on Linux/Unix, or 'C:/' on Windows. Signed-off-by: Nguyễn Thái Ngọc Duy --- ... and can be extended to recognize "//machine/share/" as a root part? git-compat-util.h | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/git-compat-util.h b/git-compat-util.h index a3c4537..4d0398d 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -210,6 +210,17 @@ static inline const char *skip_prefix(const char *str, const char *prefix) return strncmp(str, prefix, len) ? NULL : str + len; } +/* path must be canonical */ +static inline int is_root_path(const char *path) +{ + int len = 0; + if (has_dos_drive_prefix(path)) + len += 2; + if (is_dir_sep(path[len])) + len++; + return len; +} + #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) #ifndef PROT_READ -- 1.7.0.rc2.182.g3adef