[PATCH RFC 3/5] cache: Added index extension "NORM".
The index can now store and retrieve the ce_norm_sha1 data.
Signed-off-by: Henrik Grubbström <grubba@grubba.org>
---
cache.h | 7 +++++++
read-cache.c | 49 +++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 50 insertions(+), 6 deletions(-)
diff --git a/cache.h b/cache.h
index 536697d..0cb3110 100644
--- a/cache.h
+++ b/cache.h
@@ -157,6 +157,13 @@ struct cache_entry {
char name[FLEX_ARRAY]; /* more */
};
+struct ondisk_norm_sha1 {
+ unsigned int entry_no;
+ unsigned int norm_flags;
+ unsigned int norm_size;
+ unsigned char norm_sha1[20];
+};
+
#define NORM_CONV_CRLF 0x0001
#define NORM_CONV_GUESS 0x0002
#define NORM_CONV_IDENT 0x0004
diff --git a/read-cache.c b/read-cache.c
index f1f789b..002160e 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -27,6 +27,7 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
#define CACHE_EXT(s) ( (s[0]<<24)|(s[1]<<16)|(s[2]<<8)|(s[3]) )
#define CACHE_EXT_TREE 0x54524545 /* "TREE" */
#define CACHE_EXT_RESOLVE_UNDO 0x52455543 /* "REUC" */
+#define CACHE_EXT_NORM_SHA1 0x4e4f524d /* "NORM" */
struct index_state the_index;
@@ -1178,6 +1179,21 @@ static int verify_hdr(struct cache_header *hdr, unsigned long size)
return 0;
}
+static int norm_sha1_read(struct cache_entry **cache, unsigned int entries,
+ const struct ondisk_norm_sha1 *data, unsigned long sz)
+{
+ while (sz >= sizeof(*data)) {
+ unsigned int entry_no = ntohl(data->entry_no);
+ if (entry_no < entries) {
+ cache[entry_no]->norm_flags = ntohl(data->norm_flags);
+ memcpy(cache[entry_no]->norm_sha1, data->norm_sha1, 20);
+ }
+ sz -= sizeof(*data);
+ data++;
+ }
+ return 0;
+}
+
static int read_index_extension(struct index_state *istate,
const char *ext, void *data, unsigned long sz)
{
@@ -1188,6 +1204,9 @@ static int read_index_extension(struct index_state *istate,
case CACHE_EXT_RESOLVE_UNDO:
istate->resolve_undo = resolve_undo_read(data, sz);
break;
+ case CACHE_EXT_NORM_SHA1:
+ return norm_sha1_read(istate->cache, istate->cache_nr, data, sz);
+ break;
default:
if (*ext < 'A' || 'Z' < *ext)
return error("index uses %.4s extension, which we do not understand",
@@ -1511,6 +1530,16 @@ static void ce_smudge_racily_clean_entry(struct cache_entry *ce)
}
}
+static void norm_sha1_write(struct strbuf *sb, const struct cache_entry *ce,
+ int entry_no)
+{
+ struct ondisk_norm_sha1 entry;
+ entry.entry_no = htonl(entry_no);
+ entry.norm_flags = htonl(ce->norm_flags);
+ memcpy(entry.norm_sha1, ce->norm_sha1, 20);
+ strbuf_add(sb, &entry, sizeof(entry));
+}
+
static int ce_write_entry(git_SHA_CTX *c, int fd, struct cache_entry *ce)
{
int size = ondisk_ce_size(ce);
@@ -1546,10 +1575,11 @@ int write_index(struct index_state *istate, int newfd)
{
git_SHA_CTX c;
struct cache_header hdr;
- int i, err, removed, extended;
+ int i, j, err, removed, extended;
struct cache_entry **cache = istate->cache;
int entries = istate->cache_nr;
struct stat st;
+ struct strbuf sb = STRBUF_INIT;
for (i = removed = extended = 0; i < entries; i++) {
if (cache[i]->ce_flags & CE_REMOVE)
@@ -1572,7 +1602,7 @@ int write_index(struct index_state *istate, int newfd)
if (ce_write(&c, newfd, &hdr, sizeof(hdr)) < 0)
return -1;
- for (i = 0; i < entries; i++) {
+ for (i = j = 0; i < entries; i++) {
struct cache_entry *ce = cache[i];
if (ce->ce_flags & CE_REMOVE)
continue;
@@ -1580,12 +1610,21 @@ int write_index(struct index_state *istate, int newfd)
ce_smudge_racily_clean_entry(ce);
if (ce_write_entry(&c, newfd, ce) < 0)
return -1;
+ if (ce->norm_flags)
+ norm_sha1_write(&sb, ce, j);
+ j++;
}
/* Write extension data here */
+ if (sb.len) {
+ err = write_index_ext_header(&c, newfd, CACHE_EXT_NORM_SHA1,
+ sb.len) < 0
+ || ce_write(&c, newfd, sb.buf, sb.len) < 0;
+ strbuf_release(&sb);
+ if (err)
+ return -1;
+ }
if (istate->cache_tree) {
- struct strbuf sb = STRBUF_INIT;
-
cache_tree_write(&sb, istate->cache_tree);
err = write_index_ext_header(&c, newfd, CACHE_EXT_TREE, sb.len) < 0
|| ce_write(&c, newfd, sb.buf, sb.len) < 0;
@@ -1594,8 +1633,6 @@ int write_index(struct index_state *istate, int newfd)
return -1;
}
if (istate->resolve_undo) {
- struct strbuf sb = STRBUF_INIT;
-
resolve_undo_write(&sb, istate->resolve_undo);
err = write_index_ext_header(&c, newfd, CACHE_EXT_RESOLVE_UNDO,
sb.len) < 0
--
1.7.0.4.369.g81e89
Henrik Grubbström (Grubba) <grubba@grubba.org>