Add support for a "GIT_INDEX_FILE" environment variable.

[git.git] / update-cache.c

diff --git a/update-cache.c b/update-cache.c
index 7c3a143..4353b80 100644 (file)
--- a/update-cache.c
+++ b/update-cache.c
@@ -21,6 +21,7 @@ static int index_fd(unsigned char *sha1, int fd, struct stat *st)
        int max_out_bytes = size + 200;
        void *out = malloc(max_out_bytes);
        void *metadata = malloc(200);
+       int metadata_size;
        void *in;
        SHA_CTX c;
 
@@ -31,6 +32,13 @@ static int index_fd(unsigned char *sha1, int fd, struct stat *st)
        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(unsigned char *sha1, int fd, struct stat *st)
         * 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)
@@ -54,10 +62,6 @@ static int index_fd(unsigned char *sha1, int fd, struct stat *st)
 
        deflateEnd(&stream);
        
-       SHA1_Init(&c);
-       SHA1_Update(&c, out, stream.total_out);
-       SHA1_Final(sha1, &c);
-
        return write_sha1_buffer(sha1, out, stream.total_out);
 }
 
@@ -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;
@@ -261,25 +274,29 @@ static int add_cacheinfo(char *arg1, char *arg2, char *arg3)
        return add_cache_entry(ce, allow_add);
 }
 
-static int remove_lock = 0;
+static const char *lockfile_name = NULL;
 
 static void remove_lock_file(void)
 {
-       if (remove_lock)
-               unlink(".git/index.lock");
+       if (lockfile_name)
+               unlink(lockfile_name);
 }
 
 int main(int argc, char **argv)
 {
        int i, newfd, entries;
        int allow_options = 1;
+       static char lockfile[MAXPATHLEN+1];
+       const char *indexfile = get_index_file();
+
+       snprintf(lockfile, sizeof(lockfile), "%s.lock", indexfile);
 
-       newfd = open(".git/index.lock", O_RDWR | O_CREAT | O_EXCL, 0600);
+       newfd = open(lockfile, O_RDWR | O_CREAT | O_EXCL, 0600);
        if (newfd < 0)
                die("unable to create new cachefile");
 
        atexit(remove_lock_file);
-       remove_lock = 1;
+       lockfile_name = lockfile;
 
        entries = read_cache();
        if (entries < 0)
@@ -320,10 +337,9 @@ int main(int argc, char **argv)
                if (add_file_to_cache(path))
                        die("Unable to add %s to database", path);
        }
-       if (write_cache(newfd, active_cache, active_nr) ||
-           rename(".git/index.lock", ".git/index"))
+       if (write_cache(newfd, active_cache, active_nr) || rename(lockfile, indexfile))
                die("Unable to write new cachefile");
 
-       remove_lock = 0;
+       lockfile_name = NULL;
        return 0;
 }