[PATCH] Add --info-only option to git-update-cache.

diff --git a/http-pull.c b/http-pull.c
index 024457a9895ab10c4ef18aa6e232d12fdaab4da9..1f9d60b9b1d5eed85b24d96c240666bbfc5a22ed 100644 (file)
--- a/http-pull.c
+++ b/http-pull.c
@@ -1,11 +1,5 @@
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
 #include "cache.h"
 #include "commit.h"
-#include <errno.h>
-#include <stdio.h>
 
 #include "pull.h"
 
@@ -22,9 +16,26 @@ 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) {
-       char expn[4096];
+       unsigned char expn[4096];
        size_t size = eltsize * nmemb;
        int posn = 0;
        do {
@@ -49,7 +60,7 @@ int fetch(unsigned char *sha1)
 {
        char *hex = sha1_to_hex(sha1);
        char *filename = sha1_file_name(sha1);
-       char real_sha1[20];
+       unsigned char real_sha1[20];
        char *url;
        char *posn;
 
@@ -98,6 +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;
@@ -115,11 +156,14 @@ int main(int argc, char **argv)
                        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] [-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];