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-rw-r--r--rpull.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/rpull.c b/rpull.c
new file mode 100644
index 0000000..c27af2c
--- /dev/null
+++ b/rpull.c
@@ -0,0 +1,128 @@
+#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 "rsh.h"
+
+static int tree = 0;
+static int commits = 0;
+static int all = 0;
+
+static int fd_in;
+static int fd_out;
+
+static int fetch(unsigned char *sha1)
+{
+ if (has_sha1_file(sha1))
+ return 0;
+ write(fd_out, sha1, 20);
+ return write_sha1_from_fd(sha1, fd_in);
+}
+
+static int process_tree(unsigned char *sha1)
+{
+ struct tree *tree = lookup_tree(sha1);
+ struct tree_entry_list *entries;
+
+ if (parse_tree(tree))
+ return -1;
+
+ for (entries = tree->entries; entries; entries = entries->next) {
+ /*
+ fprintf(stderr, "Tree %s ", sha1_to_hex(sha1));
+ fprintf(stderr, "needs %s\n",
+ sha1_to_hex(entries->item.tree->object.sha1));
+ */
+ if (fetch(entries->item.tree->object.sha1)) {
+ return error("Missing item %s",
+ sha1_to_hex(entries->item.tree->object.sha1));
+ }
+ if (entries->directory) {
+ if (process_tree(entries->item.tree->object.sha1))
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int process_commit(unsigned char *sha1)
+{
+ struct commit *obj = lookup_commit(sha1);
+
+ if (fetch(sha1)) {
+ return error("Fetching %s", sha1_to_hex(sha1));
+ }
+
+ if (parse_commit(obj))
+ return -1;
+
+ if (tree) {
+ if (fetch(obj->tree->object.sha1))
+ return -1;
+ if (process_tree(obj->tree->object.sha1))
+ return -1;
+ if (!all)
+ tree = 0;
+ }
+ if (commits) {
+ struct commit_list *parents = obj->parents;
+ for (; parents; parents = parents->next) {
+ if (has_sha1_file(parents->item->object.sha1))
+ continue;
+ if (fetch(parents->item->object.sha1)) {
+ /* The server might not have it, and
+ * we don't mind.
+ */
+ error("Missing tree %s; continuing",
+ sha1_to_hex(parents->item->object.sha1));
+ continue;
+ }
+ if (process_commit(parents->item->object.sha1))
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ char *commit_id;
+ char *url;
+ int arg = 1;
+ unsigned char sha1[20];
+
+ while (arg < argc && argv[arg][0] == '-') {
+ if (argv[arg][1] == 't') {
+ tree = 1;
+ } else if (argv[arg][1] == 'c') {
+ commits = 1;
+ } else if (argv[arg][1] == 'a') {
+ all = 1;
+ tree = 1;
+ commits = 1;
+ }
+ arg++;
+ }
+ if (argc < arg + 2) {
+ usage("rpull [-c] [-t] [-a] commit-id url");
+ return 1;
+ }
+ commit_id = argv[arg];
+ url = argv[arg + 1];
+
+ if (setup_connection(&fd_in, &fd_out, "rpush", url, arg, argv + 1))
+ return 1;
+
+ get_sha1_hex(commit_id, sha1);
+
+ if (fetch(sha1))
+ return 1;
+ if (process_commit(sha1))
+ return 1;
+
+ return 0;
+}