зеркало из https://github.com/microsoft/git.git
130 строки
2.5 KiB
C
130 строки
2.5 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "rsh.h"
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#include "pull.h"
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#include "refs.h"
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static int fd_in;
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static int fd_out;
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static unsigned char remote_version = 0;
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static unsigned char local_version = 1;
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static ssize_t force_write(int fd, void *buffer, size_t length)
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{
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ssize_t ret = 0;
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while (ret < length) {
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ssize_t size = write(fd, buffer + ret, length - ret);
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if (size < 0) {
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return size;
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}
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if (size == 0) {
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return ret;
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}
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ret += size;
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}
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return ret;
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}
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void prefetch(unsigned char *sha1)
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{
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char type = 'o';
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force_write(fd_out, &type, 1);
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force_write(fd_out, sha1, 20);
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//memcpy(requested + 20 * prefetches++, sha1, 20);
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}
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static char conn_buf[4096];
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static size_t conn_buf_posn = 0;
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int fetch(unsigned char *sha1)
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{
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int ret;
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signed char remote;
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if (conn_buf_posn) {
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remote = conn_buf[0];
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memmove(conn_buf, conn_buf + 1, --conn_buf_posn);
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} else {
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if (read(fd_in, &remote, 1) < 1)
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return -1;
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}
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//fprintf(stderr, "Got %d\n", remote);
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if (remote < 0)
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return remote;
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ret = write_sha1_from_fd(sha1, fd_in, conn_buf, 4096, &conn_buf_posn);
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if (!ret)
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pull_say("got %s\n", sha1_to_hex(sha1));
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return ret;
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}
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static int get_version(void)
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{
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char type = 'v';
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write(fd_out, &type, 1);
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write(fd_out, &local_version, 1);
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if (read(fd_in, &remote_version, 1) < 1) {
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return error("Couldn't read version from remote end");
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}
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return 0;
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}
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int fetch_ref(char *ref, unsigned char *sha1)
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{
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signed char remote;
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char type = 'r';
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write(fd_out, &type, 1);
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write(fd_out, ref, strlen(ref) + 1);
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read(fd_in, &remote, 1);
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if (remote < 0)
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return remote;
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read(fd_in, sha1, 20);
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return 0;
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}
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int main(int argc, char **argv)
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{
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char *commit_id;
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char *url;
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int arg = 1;
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const char *prog;
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prog = getenv("GIT_SSH_PUSH");
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if (!prog) prog = "git-ssh-push";
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while (arg < argc && argv[arg][0] == '-') {
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if (argv[arg][1] == 't') {
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get_tree = 1;
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} else if (argv[arg][1] == 'c') {
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get_history = 1;
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} else if (argv[arg][1] == 'a') {
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get_all = 1;
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get_tree = 1;
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get_history = 1;
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} else if (argv[arg][1] == 'v') {
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get_verbosely = 1;
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} else if (argv[arg][1] == 'w') {
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write_ref = argv[arg + 1];
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arg++;
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}
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arg++;
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}
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if (argc < arg + 2) {
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usage("git-ssh-pull [-c] [-t] [-a] [-v] [-d] [--recover] [-w ref] commit-id url");
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return 1;
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}
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commit_id = argv[arg];
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url = argv[arg + 1];
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if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
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return 1;
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if (get_version())
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return 1;
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if (pull(commit_id))
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return 1;
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return 0;
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}
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