Slow but steady progress on git pack receive/send

diff --git a/receive-pack.c b/receive-pack.c
index 13d0b66..ce0b3c5 100644 (file)
--- a/receive-pack.c
+++ b/receive-pack.c
@@ -203,7 +203,9 @@ int main(int argc, char **argv)
        packet_flush(1);
 
        read_head_info();
-       unpack();
-       execute_commands();
+       if (commands) {
+               unpack();
+               execute_commands();
+       }
        return 0;
 }

diff --git a/send-pack.c b/send-pack.c
index 1c1b921..f8163b7 100644 (file)
--- a/send-pack.c
+++ b/send-pack.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "pkt-line.h"
+#include <sys/wait.h>
 
 static const char send_pack_usage[] = "git-send-pack [--exec=other] destination [heads]*";
 
@@ -12,7 +13,7 @@ struct ref {
        char name[0];
 };
 
-static struct ref *ref_list = NULL;
+static struct ref *ref_list = NULL, **last_ref = &ref_list;
 
 static int read_ref(const char *ref, unsigned char *sha1)
 {
@@ -34,12 +35,13 @@ static int read_ref(const char *ref, unsigned char *sha1)
 
 static int send_pack(int in, int out)
 {
+       struct ref *ref;
+
        for (;;) {
                unsigned char old_sha1[20];
                unsigned char new_sha1[20];
                static char buffer[1000];
                char *name;
-               struct ref *n;
                int len;
 
                len = packet_read_line(in, buffer, sizeof(buffer));
@@ -51,28 +53,31 @@ static int send_pack(int in, int out)
                if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
                        die("protocol error: expected sha/ref, got '%s'", buffer);
                name = buffer + 41;
-               if (read_ref(name, new_sha1) < 0) {
-                       fprintf(stderr, "no such local reference '%s'\n", name);
-                       continue;
-               }
-               if (!has_sha1_file(old_sha1)) {
-                       fprintf(stderr, "remote '%s' points to object I don't have\n", name);
-                       continue;
-               }
+               if (read_ref(name, new_sha1) < 0)
+                       return error("no such local reference '%s'", name);
+               if (!has_sha1_file(old_sha1))
+                       return error("remote '%s' points to object I don't have", name);
                if (!memcmp(old_sha1, new_sha1, 20)) {
                        fprintf(stderr, "'%s' unchanged\n", name);
-               } else {
-                       char new_hex[60];
-                       strcpy(new_hex, sha1_to_hex(new_sha1));
-                       fprintf(stderr, "%s: updating from %s to %s\n", name, sha1_to_hex(old_sha1), new_hex);
+                       continue;
                }
-               n = xmalloc(sizeof(*n) + len - 40);
-               memcpy(n->old_sha1, old_sha1, 20);
-               memcpy(n->new_sha1, new_sha1, 20);
-               memcpy(n->name, buffer + 41, len - 40);
-               n->next = ref_list;
-               ref_list = n;
+               ref = xmalloc(sizeof(*ref) + len - 40);
+               memcpy(ref->old_sha1, old_sha1, 20);
+               memcpy(ref->new_sha1, new_sha1, 20);
+               memcpy(ref->name, buffer + 41, len - 40);
+               ref->next = NULL;
+               *last_ref = ref;
+               last_ref = &ref->next;
+       }
+
+       for (ref = ref_list; ref; ref = ref->next) {
+               char old_hex[60], *new_hex;
+               strcpy(old_hex, sha1_to_hex(ref->old_sha1));
+               new_hex = sha1_to_hex(ref->new_sha1);
+               packet_write(out, "%s %s %s", old_hex, new_hex, ref->name);
+               fprintf(stderr, "'%s': updating from %s to %s\n", ref->name, old_hex, new_hex);
        }
+       
        packet_flush(out);
        close(out);
        return 0;
@@ -113,6 +118,7 @@ static int setup_connection(int fd[2], char *url, char **heads)
        const char *host, *path;
        char *colon;
        int pipefd[2][2];
+       pid_t pid;
 
        url = shell_safe(url);
        host = NULL;
@@ -126,7 +132,8 @@ static int setup_connection(int fd[2], char *url, char **heads)
        snprintf(command, sizeof(command), "%s %s", exec, path);
        if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
                die("unable to create pipe pair for communication");
-       if (!fork()) {
+       pid = fork();
+       if (!pid) {
                dup2(pipefd[1][0], 0);
                dup2(pipefd[0][1], 1);
                close(pipefd[0][0]);
@@ -143,7 +150,7 @@ static int setup_connection(int fd[2], char *url, char **heads)
        fd[1] = pipefd[1][1];
        close(pipefd[0][1]);
        close(pipefd[1][0]);
-       return 0;
+       return pid;
 }
 
 int main(int argc, char **argv)
@@ -151,7 +158,8 @@ int main(int argc, char **argv)
        int i, nr_heads = 0;
        char *dest = NULL;
        char **heads = NULL;
-       int fd[2];
+       int fd[2], ret;
+       pid_t pid;
 
        argv++;
        for (i = 1; i < argc; i++) {
@@ -171,7 +179,12 @@ int main(int argc, char **argv)
        }
        if (!dest)
                usage(send_pack_usage);
-       if (setup_connection(fd, dest, heads))
+       pid = setup_connection(fd, dest, heads);
+       if (pid < 0)
                return 1;
-       return send_pack(fd[0], fd[1]);
+       ret = send_pack(fd[0], fd[1]);
+       close(fd[0]);
+       close(fd[1]);
+       waitpid(pid, NULL, 0);
+       return ret;
 }