glossary: update description of head and ref

diff --git a/read-cache.c b/read-cache.c
index f1f789b7b87643245f1772d15b3f1cb321af324c..f38471cac3ac57d8d52429cde2dcc4cf5b92557b 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -92,7 +92,7 @@ static int ce_compare_data(struct cache_entry *ce, struct stat *st)
 
        if (fd >= 0) {
                unsigned char sha1[20];
-               if (!index_fd(sha1, fd, st, 0, OBJ_BLOB, ce->name))
+               if (!index_fd(sha1, fd, st, 0, OBJ_BLOB, ce->name, 0))
                        match = hashcmp(sha1, ce->sha1);
                /* index_fd() closed the file descriptor already */
        }
@@ -608,6 +608,29 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
                ce->ce_mode = ce_mode_from_stat(ent, st_mode);
        }
 
+       /* When core.ignorecase=true, determine if a directory of the same name but differing
+        * case already exists within the Git repository.  If it does, ensure the directory
+        * case of the file being added to the repository matches (is folded into) the existing
+        * entry's directory case.
+        */
+       if (ignore_case) {
+               const char *startPtr = ce->name;
+               const char *ptr = startPtr;
+               while (*ptr) {
+                       while (*ptr && *ptr != '/')
+                               ++ptr;
+                       if (*ptr == '/') {
+                               struct cache_entry *foundce;
+                               ++ptr;
+                               foundce = index_name_exists(&the_index, ce->name, ptr - ce->name, ignore_case);
+                               if (foundce) {
+                                       memcpy((void *)startPtr, foundce->name + (startPtr - ce->name), ptr - startPtr);
+                                       startPtr = ptr;
+                               }
+                       }
+               }
+       }
+
        alias = index_name_exists(istate, ce->name, ce_namelen(ce), ignore_case);
        if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, st, ce_option)) {
                /* Nothing changed, really */
@@ -683,30 +706,9 @@ int ce_same_name(struct cache_entry *a, struct cache_entry *b)
        return ce_namelen(b) == len && !memcmp(a->name, b->name, len);
 }
 
-int ce_path_match(const struct cache_entry *ce, const char **pathspec)
+int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec)
 {
-       const char *match, *name;
-       int len;
-
-       if (!pathspec)
-               return 1;
-
-       len = ce_namelen(ce);
-       name = ce->name;
-       while ((match = *pathspec++) != NULL) {
-               int matchlen = strlen(match);
-               if (matchlen > len)
-                       continue;
-               if (memcmp(name, match, matchlen))
-                       continue;
-               if (matchlen && name[matchlen-1] == '/')
-                       return 1;
-               if (name[matchlen] == '/' || !name[matchlen])
-                       return 1;
-               if (!matchlen)
-                       return 1;
-       }
-       return 0;
+       return match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL);
 }
 
 /*
@@ -1081,7 +1083,7 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
 }
 
 static void show_file(const char * fmt, const char * name, int in_porcelain,
-                     int * first, char *header_msg)
+                     int * first, const char *header_msg)
 {
        if (in_porcelain && *first && header_msg) {
                printf("%s\n", header_msg);
@@ -1091,7 +1093,7 @@ static void show_file(const char * fmt, const char * name, int in_porcelain,
 }
 
 int refresh_index(struct index_state *istate, unsigned int flags, const char **pathspec,
-                 char *seen, char *header_msg)
+                 char *seen, const char *header_msg)
 {
        int i;
        int has_errors = 0;
@@ -1516,6 +1518,7 @@ static int ce_write_entry(git_SHA_CTX *c, int fd, struct cache_entry *ce)
        int size = ondisk_ce_size(ce);
        struct ondisk_cache_entry *ondisk = xcalloc(1, size);
        char *name;
+       int result;
 
        ondisk->ctime.sec = htonl(ce->ce_ctime.sec);
        ondisk->mtime.sec = htonl(ce->ce_mtime.sec);
@@ -1539,7 +1542,34 @@ static int ce_write_entry(git_SHA_CTX *c, int fd, struct cache_entry *ce)
                name = ondisk->name;
        memcpy(name, ce->name, ce_namelen(ce));
 
-       return ce_write(c, fd, ondisk, size);
+       result = ce_write(c, fd, ondisk, size);
+       free(ondisk);
+       return result;
+}
+
+static int has_racy_timestamp(struct index_state *istate)
+{
+       int entries = istate->cache_nr;
+       int i;
+
+       for (i = 0; i < entries; i++) {
+               struct cache_entry *ce = istate->cache[i];
+               if (is_racy_timestamp(istate, ce))
+                       return 1;
+       }
+       return 0;
+}
+
+/*
+ * Opportunisticly update the index but do not complain if we can't
+ */
+void update_index_if_able(struct index_state *istate, struct lock_file *lockfile)
+{
+       if ((istate->cache_changed || has_racy_timestamp(istate)) &&
+           !write_index(istate, lockfile->fd))
+               commit_locked_index(lockfile);
+       else
+               rollback_lock_file(lockfile);
 }
 
 int write_index(struct index_state *istate, int newfd)