[PATCH v2 3/3] Refactor mingw_cygwin_offset_1st_component()

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From: Torsten Bögershausen <tboegi@xxxxxx>

The Windows version of offset_1st_component() needs to hande 3 cases:
- The path is an UNC path, starting with "//" or "\\\\".
  Skip the servername and the name of the share.
- The path is a DOS drive, starting with e.g. "X:"
  The driver letter and the ':' must be skipped
- The path is pointing to a subdirectory somewhere in the path and the
  directory seperator needs to be skipped ('/' or '\\').

Refactor the code to make it easier to read.

Suggested-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
Signed-off-by: Torsten Bögershausen <tboegi@xxxxxx>
---
 compat/mingw-cygwin.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/compat/mingw-cygwin.c b/compat/mingw-cygwin.c
index 5552c3ac20..c379a72775 100644
--- a/compat/mingw-cygwin.c
+++ b/compat/mingw-cygwin.c
@@ -10,10 +10,8 @@ size_t mingw_cygwin_skip_dos_drive_prefix(char **path)
 size_t mingw_cygwin_offset_1st_component(const char *path)
 {
 	char *pos = (char *)path;
-
-	/* unc paths */
-	if (!skip_dos_drive_prefix(&pos) &&
-			is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
+	if (is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
+		/* unc path */
 		/* skip server name */
 		pos = strpbrk(pos + 2, "\\/");
 		if (!pos)
@@ -22,7 +20,8 @@ size_t mingw_cygwin_offset_1st_component(const char *path)
 		do {
 			pos++;
 		} while (*pos && !is_dir_sep(*pos));
+	} else {
+		skip_dos_drive_prefix(&pos);
 	}
-
 	return pos + is_dir_sep(*pos) - path;
 }
-- 
2.19.0.271.gfe8321ec05




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