Make "write_sha1_file()" exit early if the file already exists.

diff --git a/update-cache.c b/update-cache.c
index 7d1d8e512617dc4a3b77a922f2765e79201895ab..8ec69e22b4e32a84cc8575a8eec349cec5b24fc0 100644 (file)
--- a/update-cache.c
+++ b/update-cache.c
@@ -14,13 +14,14 @@
  */
 static int allow_add = 0, allow_remove = 0;
 
-static int index_fd(const char *path, int namelen, struct cache_entry *ce, int fd, struct stat *st)
+static int index_fd(unsigned char *sha1, int fd, struct stat *st)
 {
        z_stream stream;
        unsigned long size = st->st_size;
-       int max_out_bytes = namelen + size + 200;
+       int max_out_bytes = size + 200;
        void *out = malloc(max_out_bytes);
-       void *metadata = malloc(namelen + 200);
+       void *metadata = malloc(200);
+       int metadata_size;
        void *in;
        SHA_CTX c;
 
@@ -31,6 +32,13 @@ static int index_fd(const char *path, int namelen, struct cache_entry *ce, int f
        if (!out || (int)(long)in == -1)
                return -1;
 
+       metadata_size = 1+sprintf(metadata, "blob %lu", size);
+
+       SHA1_Init(&c);
+       SHA1_Update(&c, metadata, metadata_size);
+       SHA1_Update(&c, in, size);
+       SHA1_Final(sha1, &c);
+
        memset(&stream, 0, sizeof(stream));
        deflateInit(&stream, Z_BEST_COMPRESSION);
 
@@ -38,7 +46,7 @@ static int index_fd(const char *path, int namelen, struct cache_entry *ce, int f
         * ASCII size + nul byte
         */     
        stream.next_in = metadata;
-       stream.avail_in = 1+sprintf(metadata, "blob %lu", size);
+       stream.avail_in = metadata_size;
        stream.next_out = out;
        stream.avail_out = max_out_bytes;
        while (deflate(&stream, 0) == Z_OK)
@@ -54,11 +62,7 @@ static int index_fd(const char *path, int namelen, struct cache_entry *ce, int f
 
        deflateEnd(&stream);
        
-       SHA1_Init(&c);
-       SHA1_Update(&c, out, stream.total_out);
-       SHA1_Final(ce->sha1, &c);
-
-       return write_sha1_buffer(ce->sha1, out, stream.total_out);
+       return write_sha1_buffer(sha1, out, stream.total_out);
 }
 
 /*
@@ -109,7 +113,7 @@ static int add_file_to_cache(char *path)
        ce->ce_mode = create_ce_mode(st.st_mode);
        ce->ce_flags = htons(namelen);
 
-       if (index_fd(path, namelen, ce, fd, &st) < 0)
+       if (index_fd(ce->sha1, fd, &st) < 0)
                return -1;
 
        return add_cache_entry(ce, allow_add);
@@ -196,9 +200,18 @@ static void refresh_cache(void)
        int i;
 
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
-               struct cache_entry *new = refresh_entry(ce);
+               struct cache_entry *ce, *new;
+               ce = active_cache[i];
+               if (ce_stage(ce)) {
+                       printf("%s: needs merge\n", ce->name);
+                       while ((i < active_nr) &&
+                              ! strcmp(active_cache[i]->name, ce->name))
+                               i++;
+                       i--;
+                       continue;
+               }
 
+               new = refresh_entry(ce);
                if (!new) {
                        printf("%s: needs update\n", ce->name);
                        continue;
@@ -244,13 +257,10 @@ static int add_cacheinfo(char *arg1, char *arg2, char *arg3)
 
        if (sscanf(arg1, "%o", &mode) != 1)
                return -1;
-       printf("got mode %o\n", mode);
        if (get_sha1_hex(arg2, sha1))
                return -1;
-       printf("got sha1 %s\n", sha1_to_hex(sha1));
        if (!verify_path(arg3))
                return -1;
-       printf("got path %s\n", arg3);
 
        len = strlen(arg3);
        size = cache_entry_size(len);