141 lines
3.3 KiB
C
141 lines
3.3 KiB
C
/*
|
|
* GIT - The information manager from hell
|
|
*
|
|
* Copyright (C) Linus Torvalds, 2005
|
|
*/
|
|
#include "cache.h"
|
|
#include "commit.h"
|
|
#include "tree.h"
|
|
#include "builtin.h"
|
|
|
|
#define BLOCKING (1ul << 14)
|
|
|
|
/*
|
|
* FIXME! Share the code with "write-tree.c"
|
|
*/
|
|
static void init_buffer(char **bufp, unsigned int *sizep)
|
|
{
|
|
char *buf = xmalloc(BLOCKING);
|
|
*sizep = 0;
|
|
*bufp = buf;
|
|
}
|
|
|
|
static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...)
|
|
{
|
|
char one_line[2048];
|
|
va_list args;
|
|
int len;
|
|
unsigned long alloc, size, newsize;
|
|
char *buf;
|
|
|
|
va_start(args, fmt);
|
|
len = vsnprintf(one_line, sizeof(one_line), fmt, args);
|
|
va_end(args);
|
|
size = *sizep;
|
|
newsize = size + len;
|
|
alloc = (size + 32767) & ~32767;
|
|
buf = *bufp;
|
|
if (newsize > alloc) {
|
|
alloc = (newsize + 32767) & ~32767;
|
|
buf = xrealloc(buf, alloc);
|
|
*bufp = buf;
|
|
}
|
|
*sizep = newsize;
|
|
memcpy(buf + size, one_line, len);
|
|
}
|
|
|
|
static void check_valid(unsigned char *sha1, const char *expect)
|
|
{
|
|
char type[20];
|
|
|
|
if (sha1_object_info(sha1, type, NULL))
|
|
die("%s is not a valid object", sha1_to_hex(sha1));
|
|
if (expect && strcmp(type, expect))
|
|
die("%s is not a valid '%s' object", sha1_to_hex(sha1),
|
|
expect);
|
|
}
|
|
|
|
/*
|
|
* Having more than two parents is not strange at all, and this is
|
|
* how multi-way merges are represented.
|
|
*/
|
|
#define MAXPARENT (16)
|
|
static unsigned char parent_sha1[MAXPARENT][20];
|
|
|
|
static const char commit_tree_usage[] = "git-commit-tree <sha1> [-p <sha1>]* < changelog";
|
|
|
|
static int new_parent(int idx)
|
|
{
|
|
int i;
|
|
unsigned char *sha1 = parent_sha1[idx];
|
|
for (i = 0; i < idx; i++) {
|
|
if (!memcmp(parent_sha1[i], sha1, 20)) {
|
|
error("duplicate parent %s ignored", sha1_to_hex(sha1));
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int cmd_commit_tree(int argc, const char **argv, char **envp)
|
|
{
|
|
int i;
|
|
int parents = 0;
|
|
unsigned char tree_sha1[20];
|
|
unsigned char commit_sha1[20];
|
|
char comment[1000];
|
|
char *buffer;
|
|
unsigned int size;
|
|
|
|
setup_ident();
|
|
setup_git_directory();
|
|
|
|
git_config(git_default_config);
|
|
|
|
if (argc < 2)
|
|
usage(commit_tree_usage);
|
|
if (get_sha1(argv[1], tree_sha1))
|
|
die("Not a valid object name %s", argv[1]);
|
|
|
|
check_valid(tree_sha1, tree_type);
|
|
for (i = 2; i < argc; i += 2) {
|
|
const char *a, *b;
|
|
a = argv[i]; b = argv[i+1];
|
|
if (!b || strcmp(a, "-p"))
|
|
usage(commit_tree_usage);
|
|
if (get_sha1(b, parent_sha1[parents]))
|
|
die("Not a valid object name %s", b);
|
|
check_valid(parent_sha1[parents], commit_type);
|
|
if (new_parent(parents))
|
|
parents++;
|
|
}
|
|
if (!parents)
|
|
fprintf(stderr, "Committing initial tree %s\n", argv[1]);
|
|
|
|
init_buffer(&buffer, &size);
|
|
add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));
|
|
|
|
/*
|
|
* NOTE! This ordering means that the same exact tree merged with a
|
|
* different order of parents will be a _different_ changeset even
|
|
* if everything else stays the same.
|
|
*/
|
|
for (i = 0; i < parents; i++)
|
|
add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i]));
|
|
|
|
/* Person/date information */
|
|
add_buffer(&buffer, &size, "author %s\n", git_author_info(1));
|
|
add_buffer(&buffer, &size, "committer %s\n\n", git_committer_info(1));
|
|
|
|
/* And add the comment */
|
|
while (fgets(comment, sizeof(comment), stdin) != NULL)
|
|
add_buffer(&buffer, &size, "%s", comment);
|
|
|
|
if (!write_sha1_file(buffer, size, commit_type, commit_sha1)) {
|
|
printf("%s\n", sha1_to_hex(commit_sha1));
|
|
return 0;
|
|
}
|
|
else
|
|
return 1;
|
|
}
|