git-pack-objects: do the delta search in reverse size order

diff --git a/http-pull.c b/http-pull.c
index 551663e49234dc9b719ee4abb9f8dc8609d759aa..ec53dad8efbe6e7734b75eaba8821ac290a5abbb 100644 (file)
--- a/http-pull.c
+++ b/http-pull.c
@@ -16,6 +16,23 @@ static z_stream stream;
 static int local;
 static int zret;
 
+struct buffer
+{
+        size_t posn;
+        size_t size;
+        void *buffer;
+};
+
+static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb,
+                            struct buffer *buffer) {
+        size_t size = eltsize * nmemb;
+        if (size > buffer->size - buffer->posn)
+                size = buffer->size - buffer->posn;
+        memcpy(buffer->buffer + buffer->posn, ptr, size);
+        buffer->posn += size;
+        return size;
+}
+
 static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, 
                               void *data) {
        unsigned char expn[4096];
@@ -92,6 +109,36 @@ int fetch(unsigned char *sha1)
        return 0;
 }
 
+int fetch_ref(char *ref, unsigned char *sha1)
+{
+        char *url, *posn;
+        char hex[42];
+        struct buffer buffer;
+        buffer.size = 41;
+        buffer.posn = 0;
+        buffer.buffer = hex;
+        hex[41] = '\0';
+        
+        curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
+
+        url = xmalloc(strlen(base) + 6 + strlen(ref));
+        strcpy(url, base);
+        posn = url + strlen(base);
+        strcpy(posn, "refs/");
+        posn += 5;
+        strcpy(posn, ref);
+
+        curl_easy_setopt(curl, CURLOPT_URL, url);
+
+        if (curl_easy_perform(curl))
+                return error("Couldn't get %s for %s\n", url, ref);
+
+        hex[40] = '\0';
+        get_sha1_hex(hex, sha1);
+        return 0;
+}
+
 int main(int argc, char **argv)
 {
        char *commit_id;
@@ -105,17 +152,22 @@ int main(int argc, char **argv)
                        get_history = 1;
                } else if (argv[arg][1] == 'd') {
                        get_delta = 0;
+               } else if (!strcmp(argv[arg], "--recover")) {
+                       get_delta = 2;
                } else if (argv[arg][1] == 'a') {
                        get_all = 1;
                        get_tree = 1;
                        get_history = 1;
                } else if (argv[arg][1] == 'v') {
                        get_verbosely = 1;
+               } else if (argv[arg][1] == 'w') {
+                       write_ref = argv[arg + 1];
+                       arg++;
                }
                arg++;
        }
        if (argc < arg + 2) {
-               usage("git-http-pull [-c] [-t] [-a] [-d] [-v] commit-id url");
+               usage("git-http-pull [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url");
                return 1;
        }
        commit_id = argv[arg];