diff options
| -rw-r--r-- | cache.h | 1 | ||||
| -rw-r--r-- | read-cache.c | 35 |
2 files changed, 36 insertions, 0 deletions
@@ -536,6 +536,7 @@ extern int create_symref(const char *ref, const char *refs_heads_master, const c extern int validate_headref(const char *ref); extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); +extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2); extern void *read_object_with_reference(const unsigned char *sha1, diff --git a/read-cache.c b/read-cache.c index 657f0c589..bf649a31a 100644 --- a/read-cache.c +++ b/read-cache.c @@ -351,6 +351,41 @@ int base_name_compare(const char *name1, int len1, int mode1, return (c1 < c2) ? -1 : (c1 > c2) ? 1 : 0; } +/* + * df_name_compare() is identical to base_name_compare(), except it + * compares conflicting directory/file entries as equal. Note that + * while a directory name compares as equal to a regular file, they + * then individually compare _differently_ to a filename that has + * a dot after the basename (because '\0' < '.' < '/'). + * + * This is used by routines that want to traverse the git namespace + * but then handle conflicting entries together when possible. + */ +int df_name_compare(const char *name1, int len1, int mode1, + const char *name2, int len2, int mode2) +{ + int len = len1 < len2 ? len1 : len2, cmp; + unsigned char c1, c2; + + cmp = memcmp(name1, name2, len); + if (cmp) + return cmp; + /* Directories and files compare equal (same length, same name) */ + if (len1 == len2) + return 0; + c1 = name1[len]; + if (!c1 && S_ISDIR(mode1)) + c1 = '/'; + c2 = name2[len]; + if (!c2 && S_ISDIR(mode2)) + c2 = '/'; + if (c1 == '/' && !c2) + return 0; + if (c2 == '/' && !c1) + return 0; + return c1 - c2; +} + int cache_name_compare(const char *name1, int flags1, const char *name2, int flags2) { int len1 = flags1 & CE_NAMEMASK; |