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https://github.com/git/git
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3d74982f0b
This patch doesn't change any functionality, it only moves code around. It makes seeing the few remaining lines of git-tar-tree code easier. ;-) Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
/*
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* Copyright (c) 2005, 2006 Rene Scharfe
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*/
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#include <time.h>
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#include "cache.h"
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#include "commit.h"
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#include "tar.h"
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#include "builtin.h"
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#include "pkt-line.h"
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#include "archive.h"
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#define RECORDSIZE (512)
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#define BLOCKSIZE (RECORDSIZE * 20)
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static const char tar_tree_usage[] =
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"git-tar-tree [--remote=<repo>] <tree-ish> [basedir]";
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static int generate_tar(int argc, const char **argv, const char *prefix)
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{
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struct archiver_args args;
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int result;
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char *base = NULL;
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memset(&args, 0, sizeof(args));
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if (argc != 2 && argc != 3)
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usage(tar_tree_usage);
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if (argc == 3) {
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int baselen = strlen(argv[2]);
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base = xmalloc(baselen + 2);
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memcpy(base, argv[2], baselen);
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base[baselen] = '/';
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base[baselen + 1] = '\0';
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}
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args.base = base;
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parse_treeish_arg(argv + 1, &args, NULL);
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result = write_tar_archive(&args);
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free(base);
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return result;
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}
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static const char *exec = "git-upload-tar";
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static int remote_tar(int argc, const char **argv)
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{
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int fd[2], ret, len;
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pid_t pid;
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char buf[1024];
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char *url;
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if (argc < 3 || 4 < argc)
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usage(tar_tree_usage);
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/* --remote=<repo> */
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url = xstrdup(argv[1]+9);
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pid = git_connect(fd, url, exec);
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if (pid < 0)
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return 1;
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packet_write(fd[1], "want %s\n", argv[2]);
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if (argv[3])
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packet_write(fd[1], "base %s\n", argv[3]);
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packet_flush(fd[1]);
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len = packet_read_line(fd[0], buf, sizeof(buf));
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if (!len)
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die("git-tar-tree: expected ACK/NAK, got EOF");
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if (buf[len-1] == '\n')
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buf[--len] = 0;
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if (strcmp(buf, "ACK")) {
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if (5 < len && !strncmp(buf, "NACK ", 5))
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die("git-tar-tree: NACK %s", buf + 5);
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die("git-tar-tree: protocol error");
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}
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/* expect a flush */
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len = packet_read_line(fd[0], buf, sizeof(buf));
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if (len)
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die("git-tar-tree: expected a flush");
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/* Now, start reading from fd[0] and spit it out to stdout */
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ret = copy_fd(fd[0], 1);
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close(fd[0]);
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ret |= finish_connect(pid);
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return !!ret;
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}
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int cmd_tar_tree(int argc, const char **argv, const char *prefix)
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{
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if (argc < 2)
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usage(tar_tree_usage);
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if (!strncmp("--remote=", argv[1], 9))
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return remote_tar(argc, argv);
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return generate_tar(argc, argv, prefix);
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}
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/* ustar header + extended global header content */
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#define HEADERSIZE (2 * RECORDSIZE)
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int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix)
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{
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char buffer[HEADERSIZE];
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struct ustar_header *header = (struct ustar_header *)buffer;
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char *content = buffer + RECORDSIZE;
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ssize_t n;
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n = xread(0, buffer, HEADERSIZE);
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if (n < HEADERSIZE)
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die("git-get-tar-commit-id: read error");
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if (header->typeflag[0] != 'g')
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return 1;
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if (memcmp(content, "52 comment=", 11))
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return 1;
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n = xwrite(1, content + 11, 41);
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if (n < 41)
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die("git-get-tar-commit-id: write error");
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return 0;
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}
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