"make clean" should clean up after a rpm build

[thirdparty/git.git] / fetch-pack.c

#include "cache.h"
#include "refs.h"
#include "pkt-line.h"
#include <sys/wait.h>

static const char fetch_pack_usage[] = "git-fetch-pack [host:]directory [heads]* < mycommitlist";
static const char *exec = "git-upload-pack";

static int find_common(int fd[2], unsigned char *result_sha1, unsigned char *remote)
{
	static char line[1000];
	int count = 0, flushes = 0, retval;
	FILE *revs;

	revs = popen("git-rev-list $(git-rev-parse --all)", "r");
	if (!revs)
		die("unable to run 'git-rev-list'");
	packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
	packet_flush(fd[1]);
	flushes = 1;
	retval = -1;
	while (fgets(line, sizeof(line), revs) != NULL) {
		unsigned char sha1[20];
		if (get_sha1_hex(line, sha1))
			die("git-fetch-pack: expected object name, got crud");
		packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
		if (!(31 & ++count)) {
			packet_flush(fd[1]);
			flushes++;

			/*
			 * We keep one window "ahead" of the other side, and
			 * will wait for an ACK only on the next one
			 */
			if (count == 32)
				continue;
			if (get_ack(fd[0], result_sha1)) {
				flushes = 0;
				retval = 0;
				break;
			}
			flushes--;
		}
	}
	pclose(revs);
	packet_write(fd[1], "done\n");
	while (flushes) {
		flushes--;
		if (get_ack(fd[0], result_sha1))
			return 0;
	}
	return retval;
}

static int get_remote_heads(int fd, int nr_match, char **match, unsigned char *result)
{
	int count = 0;

	for (;;) {
		static char line[1000];
		unsigned char sha1[20];
		char *refname;
		int len;

		len = packet_read_line(fd, line, sizeof(line));
		if (!len)
			break;
		if (line[len-1] == '\n')
			line[--len] = 0;
		if (len < 42 || get_sha1_hex(line, sha1))