struct index_state the_index;
-static unsigned int hash_name(const char *name, int namelen)
-{
- unsigned int hash = 0x123;
-
- do {
- unsigned char c = *name++;
- hash = hash*101 + c;
- } while (--namelen);
- return hash;
-}
-
-static void hash_index_entry(struct index_state *istate, struct cache_entry *ce)
-{
- void **pos;
- unsigned int hash;
-
- if (ce->ce_flags & CE_HASHED)
- return;
- ce->ce_flags |= CE_HASHED;
- ce->next = NULL;
- hash = hash_name(ce->name, ce_namelen(ce));
- pos = insert_hash(hash, ce, &istate->name_hash);
- if (pos) {
- ce->next = *pos;
- *pos = ce;
- }
-}
-
-static void lazy_init_name_hash(struct index_state *istate)
-{
- int nr;
-
- if (istate->name_hash_initialized)
- return;
- for (nr = 0; nr < istate->cache_nr; nr++)
- hash_index_entry(istate, istate->cache[nr]);
- istate->name_hash_initialized = 1;
-}
-
static void set_index_entry(struct index_state *istate, int nr, struct cache_entry *ce)
{
- ce->ce_flags &= ~CE_UNHASHED;
istate->cache[nr] = ce;
- if (istate->name_hash_initialized)
- hash_index_entry(istate, ce);
+ add_name_hash(istate, ce);
}
static void replace_index_entry(struct index_state *istate, int nr, struct cache_entry *ce)
{
struct cache_entry *old = istate->cache[nr];
- remove_index_entry(old);
+ remove_name_hash(old);
set_index_entry(istate, nr, ce);
istate->cache_changed = 1;
}
-int index_name_exists(struct index_state *istate, const char *name, int namelen)
-{
- unsigned int hash = hash_name(name, namelen);
- struct cache_entry *ce;
-
- lazy_init_name_hash(istate);
- ce = lookup_hash(hash, &istate->name_hash);
-
- while (ce) {
- if (!(ce->ce_flags & CE_UNHASHED)) {
- if (!cache_name_compare(name, namelen, ce->name, ce->ce_flags))
- return 1;
- }
- ce = ce->next;
- }
- return 0;
-}
-
/*
* This only updates the "non-critical" parts of the directory
* cache, ie the parts that aren't tracked by GIT, and only used
return changed;
}
-static int is_racy_timestamp(struct index_state *istate, struct cache_entry *ce)
+static int is_racy_timestamp(const struct index_state *istate, struct cache_entry *ce)
{
- return (istate->timestamp &&
+ return (!S_ISGITLINK(ce->ce_mode) &&
+ istate->timestamp &&
((unsigned int)istate->timestamp) <= ce->ce_mtime);
}
-int ie_match_stat(struct index_state *istate,
+int ie_match_stat(const struct index_state *istate,
struct cache_entry *ce, struct stat *st,
unsigned int options)
{
return changed;
}
-int ie_modified(struct index_state *istate,
+int ie_modified(const struct index_state *istate,
struct cache_entry *ce, struct stat *st, unsigned int options)
{
int changed, changed_fs;
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;
return 0;
}
-int index_name_pos(struct index_state *istate, const char *name, int namelen)
+int index_name_pos(const struct index_state *istate, const char *name, int namelen)
{
int first, last;
{
struct cache_entry *ce = istate->cache[pos];
- remove_index_entry(ce);
+ remove_name_hash(ce);
istate->cache_changed = 1;
istate->cache_nr--;
if (pos >= istate->cache_nr)
return pos;
}
-int add_file_to_index(struct index_state *istate, const char *path, int verbose)
+static int different_name(struct cache_entry *ce, struct cache_entry *alias)
{
- int size, namelen, pos;
- struct stat st;
- struct cache_entry *ce;
- unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_RACY_IS_DIRTY;
+ int len = ce_namelen(ce);
+ return ce_namelen(alias) != len || memcmp(ce->name, alias->name, len);
+}
- if (lstat(path, &st))
- die("%s: unable to stat (%s)", path, strerror(errno));
+/*
+ * If we add a filename that aliases in the cache, we will use the
+ * name that we already have - but we don't want to update the same
+ * alias twice, because that implies that there were actually two
+ * different files with aliasing names!
+ *
+ * So we use the CE_ADDED flag to verify that the alias was an old
+ * one before we accept it as
+ */
+static struct cache_entry *create_alias_ce(struct cache_entry *ce, struct cache_entry *alias)
+{
+ int len;
+ struct cache_entry *new;
+
+ if (alias->ce_flags & CE_ADDED)
+ die("Will not add file alias '%s' ('%s' already exists in index)", ce->name, alias->name);
+
+ /* Ok, create the new entry using the name of the existing alias */
+ len = ce_namelen(alias);
+ new = xcalloc(1, cache_entry_size(len));
+ memcpy(new->name, alias->name, len);
+ copy_cache_entry(new, ce);
+ free(ce);
+ return new;
+}
- if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode))
- die("%s: can only add regular files, symbolic links or git-directories", path);
+int add_to_index(struct index_state *istate, const char *path, struct stat *st, int verbose)
+{
+ int size, namelen;
+ mode_t st_mode = st->st_mode;
+ struct cache_entry *ce, *alias;
+ unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_RACY_IS_DIRTY;
+
+ if (!S_ISREG(st_mode) && !S_ISLNK(st_mode) && !S_ISDIR(st_mode))
+ return error("%s: can only add regular files, symbolic links or git-directories", path);
namelen = strlen(path);
- if (S_ISDIR(st.st_mode)) {
+ if (S_ISDIR(st_mode)) {
while (namelen && path[namelen-1] == '/')
namelen--;
}
ce = xcalloc(1, size);
memcpy(ce->name, path, namelen);
ce->ce_flags = namelen;
- fill_stat_cache_info(ce, &st);
+ fill_stat_cache_info(ce, st);
if (trust_executable_bit && has_symlinks)
- ce->ce_mode = create_ce_mode(st.st_mode);
+ ce->ce_mode = create_ce_mode(st_mode);
else {
/* If there is an existing entry, pick the mode bits and type
* from it, otherwise assume unexecutable regular file.
int pos = index_name_pos_also_unmerged(istate, path, namelen);
ent = (0 <= pos) ? istate->cache[pos] : NULL;
- ce->ce_mode = ce_mode_from_stat(ent, st.st_mode);
+ ce->ce_mode = ce_mode_from_stat(ent, st_mode);
}
- pos = index_name_pos(istate, ce->name, namelen);
- if (0 <= pos &&
- !ce_stage(istate->cache[pos]) &&
- !ie_match_stat(istate, istate->cache[pos], &st, ce_option)) {
+ 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 */
free(ce);
- ce_mark_uptodate(istate->cache[pos]);
+ ce_mark_uptodate(alias);
+ alias->ce_flags |= CE_ADDED;
return 0;
}
-
- if (index_path(ce->sha1, path, &st, 1))
- die("unable to index file %s", path);
+ if (index_path(ce->sha1, path, st, 1))
+ return error("unable to index file %s", path);
+ if (ignore_case && alias && different_name(ce, alias))
+ ce = create_alias_ce(ce, alias);
+ ce->ce_flags |= CE_ADDED;
if (add_index_entry(istate, ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE))
- die("unable to add %s to index",path);
+ return error("unable to add %s to index",path);
if (verbose)
printf("add '%s'\n", path);
return 0;
}
+int add_file_to_index(struct index_state *istate, const char *path, int verbose)
+{
+ struct stat st;
+ if (lstat(path, &st))
+ die("%s: unable to stat (%s)", path, strerror(errno));
+ return add_to_index(istate, path, &st, verbose);
+}
+
struct cache_entry *make_cache_entry(unsigned int mode,
const unsigned char *sha1, const char *path, int stage,
int refresh)
return 0;
}
+int unmerged_index(const struct index_state *istate)
+{
+ int i;
+ for (i = 0; i < istate->cache_nr; i++) {
+ if (ce_stage(istate->cache[i]))
+ return 1;
+ }
+ return 0;
+}
+
#define WRITE_BUFFER_SIZE 8192
static unsigned char write_buffer[WRITE_BUFFER_SIZE];
static unsigned long write_buffer_len;
return ce_write(c, fd, ondisk, size);
}
-int write_index(struct index_state *istate, int newfd)
+int write_index(const struct index_state *istate, int newfd)
{
SHA_CTX c;
struct cache_header hdr;
struct cache_entry *ce = cache[i];
if (ce->ce_flags & CE_REMOVE)
continue;
- if (is_racy_timestamp(istate, ce))
+ if (!ce_uptodate(ce) && is_racy_timestamp(istate, ce))
ce_smudge_racily_clean_entry(ce);
if (ce_write_entry(&c, newfd, ce) < 0)
return -1;
projects / git.git / blobdiff