140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
#include "cache.h"
|
|
#include "diff.h"
|
|
#include "commit.h"
|
|
#include "log-tree.h"
|
|
#include "builtin.h"
|
|
|
|
static struct rev_info log_tree_opt;
|
|
|
|
static int diff_tree_commit_sha1(const unsigned char *sha1)
|
|
{
|
|
struct commit *commit = lookup_commit_reference(sha1);
|
|
if (!commit)
|
|
return -1;
|
|
return log_tree_commit(&log_tree_opt, commit);
|
|
}
|
|
|
|
static int diff_tree_stdin(char *line)
|
|
{
|
|
int len = strlen(line);
|
|
unsigned char sha1[20];
|
|
struct commit *commit;
|
|
|
|
if (!len || line[len-1] != '\n')
|
|
return -1;
|
|
line[len-1] = 0;
|
|
if (get_sha1_hex(line, sha1))
|
|
return -1;
|
|
commit = lookup_commit(sha1);
|
|
if (!commit || parse_commit(commit))
|
|
return -1;
|
|
if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
|
|
/* Graft the fake parents locally to the commit */
|
|
int pos = 41;
|
|
struct commit_list **pptr, *parents;
|
|
|
|
/* Free the real parent list */
|
|
for (parents = commit->parents; parents; ) {
|
|
struct commit_list *tmp = parents->next;
|
|
free(parents);
|
|
parents = tmp;
|
|
}
|
|
commit->parents = NULL;
|
|
pptr = &(commit->parents);
|
|
while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
|
|
struct commit *parent = lookup_commit(sha1);
|
|
if (parent) {
|
|
pptr = &commit_list_insert(parent, pptr)->next;
|
|
}
|
|
pos += 41;
|
|
}
|
|
}
|
|
return log_tree_commit(&log_tree_opt, commit);
|
|
}
|
|
|
|
static const char diff_tree_usage[] =
|
|
"git-diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
|
|
"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
|
|
" -r diff recursively\n"
|
|
" --root include the initial commit as diff against /dev/null\n"
|
|
COMMON_DIFF_OPTIONS_HELP;
|
|
|
|
int cmd_diff_tree(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int nr_sha1;
|
|
char line[1000];
|
|
struct object *tree1, *tree2;
|
|
static struct rev_info *opt = &log_tree_opt;
|
|
int read_stdin = 0;
|
|
|
|
init_revisions(opt, prefix);
|
|
git_config(git_default_config); /* no "diff" UI options */
|
|
nr_sha1 = 0;
|
|
opt->abbrev = 0;
|
|
opt->diff = 1;
|
|
argc = setup_revisions(argc, argv, opt, NULL);
|
|
|
|
while (--argc > 0) {
|
|
const char *arg = *++argv;
|
|
|
|
if (!strcmp(arg, "--stdin")) {
|
|
read_stdin = 1;
|
|
continue;
|
|
}
|
|
usage(diff_tree_usage);
|
|
}
|
|
|
|
if (!opt->diffopt.output_format)
|
|
opt->diffopt.output_format = DIFF_FORMAT_RAW;
|
|
|
|
/*
|
|
* NOTE! We expect "a ^b" to be equal to "a..b", so we
|
|
* reverse the order of the objects if the second one
|
|
* is marked UNINTERESTING.
|
|
*/
|
|
nr_sha1 = opt->pending.nr;
|
|
switch (nr_sha1) {
|
|
case 0:
|
|
if (!read_stdin)
|
|
usage(diff_tree_usage);
|
|
break;
|
|
case 1:
|
|
tree1 = opt->pending.objects[0].item;
|
|
diff_tree_commit_sha1(tree1->sha1);
|
|
break;
|
|
case 2:
|
|
tree1 = opt->pending.objects[0].item;
|
|
tree2 = opt->pending.objects[1].item;
|
|
if (tree2->flags & UNINTERESTING) {
|
|
struct object *tmp = tree2;
|
|
tree2 = tree1;
|
|
tree1 = tmp;
|
|
}
|
|
diff_tree_sha1(tree1->sha1,
|
|
tree2->sha1,
|
|
"", &opt->diffopt);
|
|
log_tree_diff_flush(opt);
|
|
break;
|
|
}
|
|
|
|
if (!read_stdin)
|
|
return DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS)
|
|
&& DIFF_OPT_TST(&opt->diffopt, HAS_CHANGES);
|
|
|
|
if (opt->diffopt.detect_rename)
|
|
opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
|
|
DIFF_SETUP_USE_CACHE);
|
|
while (fgets(line, sizeof(line), stdin)) {
|
|
unsigned char sha1[20];
|
|
|
|
if (get_sha1_hex(line, sha1)) {
|
|
fputs(line, stdout);
|
|
fflush(stdout);
|
|
}
|
|
else
|
|
diff_tree_stdin(line);
|
|
}
|
|
return DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS)
|
|
&& DIFF_OPT_TST(&opt->diffopt, HAS_CHANGES);
|
|
}
|