void cgit_diff_tree(const unsigned char *old_sha1,
const unsigned char *new_sha1,
filepair_fn fn, const char *prefix, int ignorews)
{
struct diff_options opt;
struct pathspec_item item;
diff_setup(&opt);
opt.output_format = DIFF_FORMAT_CALLBACK;
opt.detect_rename = 1;
opt.rename_limit = ctx.cfg.renamelimit;
DIFF_OPT_SET(&opt, RECURSIVE);
if (ignorews)
DIFF_XDL_SET(&opt, IGNORE_WHITESPACE);
opt.format_callback = cgit_diff_tree_cb;
opt.format_callback_data = fn;
if (prefix) {
item.match = prefix;
item.len = strlen(prefix);
opt.pathspec.nr = 1;
opt.pathspec.items = &item;
}
diff_setup_done(&opt);
if (old_sha1 && !is_null_sha1(old_sha1))
diff_tree_sha1(old_sha1, new_sha1, "", &opt);
else
diff_root_tree_sha1(new_sha1, "", &opt);
diffcore_std(&opt);
diff_flush(&opt);
}
void check_for_new_submodule_commits(unsigned char new_sha1[20])
{
struct rev_info rev;
struct commit *commit;
const char *argv[] = {NULL, NULL, "--not", "--all", NULL};
int argc = ARRAY_SIZE(argv) - 1;
init_revisions(&rev, NULL);
argv[1] = xstrdup(sha1_to_hex(new_sha1));
setup_revisions(argc, argv, &rev, NULL);
if (prepare_revision_walk(&rev))
die("revision walk setup failed");
/*
* Collect all submodules (whether checked out or not) for which new
* commits have been recorded upstream in "changed_submodule_paths".
*/
while ((commit = get_revision(&rev))) {
struct commit_list *parent = commit->parents;
while (parent) {
struct diff_options diff_opts;
diff_setup(&diff_opts);
diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
diff_opts.format_callback = submodule_collect_changed_cb;
if (diff_setup_done(&diff_opts) < 0)
die("diff_setup_done failed");
diff_tree_sha1(parent->item->object.sha1, commit->object.sha1, "", &diff_opts);
diffcore_std(&diff_opts);
diff_flush(&diff_opts);
parent = parent->next;
}
}
free((char *)argv[1]);
}
static int check_changes_tracked_files(struct pathspec ps)
{
int result;
struct rev_info rev;
struct object_id dummy;
/* No initial commit. */
if (get_oid("HEAD", &dummy))
return -1;
if (read_cache() < 0)
return -1;
init_revisions(&rev, NULL);
rev.prune_data = ps;
rev.diffopt.flags.quick = 1;
rev.diffopt.flags.ignore_submodules = 1;
rev.abbrev = 0;
add_head_to_pending(&rev);
diff_setup_done(&rev.diffopt);
result = run_diff_index(&rev, 1);
if (diff_result_code(&rev.diffopt, result))
return 1;
object_array_clear(&rev.pending);
result = run_diff_files(&rev, 0);
if (diff_result_code(&rev.diffopt, result))
return 1;
return 0;
}
void cgit_diff_tree(const unsigned char *old_sha1,
const unsigned char *new_sha1,
filepair_fn fn, const char *prefix)
{
struct diff_options opt;
int ret;
int prefixlen;
diff_setup(&opt);
opt.output_format = DIFF_FORMAT_CALLBACK;
opt.detect_rename = 1;
opt.rename_limit = ctx.cfg.renamelimit;
DIFF_OPT_SET(&opt, RECURSIVE);
opt.format_callback = cgit_diff_tree_cb;
opt.format_callback_data = fn;
if (prefix) {
opt.nr_paths = 1;
opt.paths = &prefix;
prefixlen = strlen(prefix);
opt.pathlens = &prefixlen;
}
diff_setup_done(&opt);
if (old_sha1 && !is_null_sha1(old_sha1))
ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
else
ret = diff_root_tree_sha1(new_sha1, "", &opt);
diffcore_std(&opt);
diff_flush(&opt);
}
void diff_no_index(struct rev_info *revs,
int argc, const char **argv,
const char *prefix)
{
int i, prefixlen;
const char *paths[2];
diff_setup(&revs->diffopt);
for (i = 1; i < argc - 2; ) {
int j;
if (!strcmp(argv[i], "--no-index"))
i++;
else if (!strcmp(argv[i], "--"))
i++;
else {
j = diff_opt_parse(&revs->diffopt, argv + i, argc - i);
if (j <= 0)
die("invalid diff option/value: %s", argv[i]);
i += j;
}
}
prefixlen = prefix ? strlen(prefix) : 0;
for (i = 0; i < 2; i++) {
const char *p = argv[argc - 2 + i];
if (!strcmp(p, "-"))
/*
* stdin should be spelled as "-"; if you have
* path that is "-", spell it as "./-".
*/
p = file_from_standard_input;
else if (prefixlen)
p = xstrdup(prefix_filename(prefix, prefixlen, p));
paths[i] = p;
}
revs->diffopt.skip_stat_unmatch = 1;
if (!revs->diffopt.output_format)
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
DIFF_OPT_SET(&revs->diffopt, NO_INDEX);
revs->max_count = -2;
diff_setup_done(&revs->diffopt);
setup_diff_pager(&revs->diffopt);
DIFF_OPT_SET(&revs->diffopt, EXIT_WITH_STATUS);
if (queue_diff(&revs->diffopt, paths[0], paths[1]))
exit(1);
diff_set_mnemonic_prefix(&revs->diffopt, "1/", "2/");
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
/*
* The return code for --no-index imitates diff(1):
* 0 = no changes, 1 = changes, else error
*/
exit(diff_result_code(&revs->diffopt, 0));
}
/*
* Get information of all renames which occurred between 'o_tree' and
* 'tree'. We need the three trees in the merge ('o_tree', 'a_tree' and
* 'b_tree') to be able to associate the correct cache entries with
* the rename information. 'tree' is always equal to either a_tree or b_tree.
*/
static struct string_list *get_renames(struct merge_options *o,
struct tree *tree,
struct tree *o_tree,
struct tree *a_tree,
struct tree *b_tree,
struct string_list *entries)
{
int i;
struct string_list *renames;
struct diff_options opts;
renames = xcalloc(1, sizeof(struct string_list));
diff_setup(&opts);
DIFF_OPT_SET(&opts, RECURSIVE);
opts.detect_rename = DIFF_DETECT_RENAME;
opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit :
o->diff_rename_limit >= 0 ? o->diff_rename_limit :
500;
opts.warn_on_too_large_rename = 1;
opts.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opts) < 0)
die("diff setup failed");
diff_tree_sha1(o_tree->object.sha1, tree->object.sha1, "", &opts);
diffcore_std(&opts);
for (i = 0; i < diff_queued_diff.nr; ++i) {
struct string_list_item *item;
struct rename *re;
struct diff_filepair *pair = diff_queued_diff.queue[i];
if (pair->status != 'R') {
diff_free_filepair(pair);
continue;
}
re = xmalloc(sizeof(*re));
re->processed = 0;
re->pair = pair;
item = string_list_lookup(re->pair->one->path, entries);
if (!item)
re->src_entry = insert_stage_data(re->pair->one->path,
o_tree, a_tree, b_tree, entries);
else
re->src_entry = item->util;
item = string_list_lookup(re->pair->two->path, entries);
if (!item)
re->dst_entry = insert_stage_data(re->pair->two->path,
o_tree, a_tree, b_tree, entries);
else
re->dst_entry = item->util;
item = string_list_insert(pair->one->path, renames);
item->util = re;
}
opts.output_format = DIFF_FORMAT_NO_OUTPUT;
diff_queued_diff.nr = 0;
diff_flush(&opts);
return renames;
}
int init_patch_ids(struct patch_ids *ids)
{
memset(ids, 0, sizeof(*ids));
diff_setup(&ids->diffopts);
ids->diffopts.detect_rename = 0;
DIFF_OPT_SET(&ids->diffopts, RECURSIVE);
diff_setup_done(&ids->diffopts);
hashmap_init(&ids->patches, (hashmap_cmp_fn)patch_id_cmp, 256);
return 0;
}
int init_patch_ids(struct patch_ids *ids)
{
memset(ids, 0, sizeof(*ids));
diff_setup(&ids->diffopts);
ids->diffopts.detect_rename = 0;
ids->diffopts.flags.recursive = 1;
diff_setup_done(&ids->diffopts);
hashmap_init(&ids->patches, patch_id_neq, &ids->diffopts, 256);
return 0;
}
/**
* Returns 1 if there are unstaged changes, 0 otherwise.
*/
static int has_unstaged_changes(const char *prefix)
{
struct rev_info rev_info;
int result;
init_revisions(&rev_info, prefix);
DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
DIFF_OPT_SET(&rev_info.diffopt, QUICK);
diff_setup_done(&rev_info.diffopt);
result = run_diff_files(&rev_info, 0);
return diff_result_code(&rev_info.diffopt, result);
}
static void show_local_changes(struct object *head,
const struct diff_options *opts)
{
struct rev_info rev;
/* I think we want full paths, even if we're in a subdirectory. */
repo_init_revisions(the_repository, &rev, NULL);
rev.diffopt.flags = opts->flags;
rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS;
diff_setup_done(&rev.diffopt);
add_pending_object(&rev, head, NULL);
run_diff_index(&rev, 0);
}
static void finish(struct commit *head_commit,
struct commit_list *remoteheads,
const unsigned char *new_head, const char *msg)
{
struct strbuf reflog_message = STRBUF_INIT;
const unsigned char *head = head_commit->object.oid.hash;
if (!msg)
strbuf_addstr(&reflog_message, getenv("GIT_REFLOG_ACTION"));
else {
if (verbosity >= 0)
printf("%s\n", msg);
strbuf_addf(&reflog_message, "%s: %s",
getenv("GIT_REFLOG_ACTION"), msg);
}
if (squash) {
squash_message(head_commit, remoteheads);
} else {
if (verbosity >= 0 && !merge_msg.len)
printf(_("No merge message -- not updating HEAD\n"));
else {
const char *argv_gc_auto[] = { "gc", "--auto", NULL };
update_ref(reflog_message.buf, "HEAD",
new_head, head, 0,
UPDATE_REFS_DIE_ON_ERR);
/*
* We ignore errors in 'gc --auto', since the
* user should see them.
*/
close_all_packs();
run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
}
}
if (new_head && show_diffstat) {
struct diff_options opts;
diff_setup(&opts);
opts.stat_width = -1; /* use full terminal width */
opts.stat_graph_width = -1; /* respect statGraphWidth config */
opts.output_format |=
DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
opts.detect_rename = DIFF_DETECT_RENAME;
diff_setup_done(&opts);
diff_tree_sha1(head, new_head, "", &opts);
diffcore_std(&opts);
diff_flush(&opts);
}
/* Run a post-merge hook */
run_hook_le(NULL, "post-merge", squash ? "1" : "0", NULL);
strbuf_release(&reflog_message);
}
static void finish(const unsigned char *new_head, const char *msg)
{
struct strbuf reflog_message = STRBUF_INIT;
if (!msg)
strbuf_addstr(&reflog_message, getenv("GIT_REFLOG_ACTION"));
else {
if (verbosity >= 0)
printf("%s\n", msg);
strbuf_addf(&reflog_message, "%s: %s",
getenv("GIT_REFLOG_ACTION"), msg);
}
if (squash) {
squash_message();
} else {
if (verbosity >= 0 && !merge_msg.len)
printf(_("No merge message -- not updating HEAD\n"));
else {
const char *argv_gc_auto[] = { "gc", "--auto", NULL };
update_ref(reflog_message.buf, "HEAD",
new_head, head, 0,
DIE_ON_ERR);
/*
* We ignore errors in 'gc --auto', since the
* user should see them.
*/
run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
}
}
if (new_head && show_diffstat) {
struct diff_options opts;
diff_setup(&opts);
opts.output_format |=
DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
opts.detect_rename = DIFF_DETECT_RENAME;
if (diff_use_color_default > 0)
DIFF_OPT_SET(&opts, COLOR_DIFF);
if (diff_setup_done(&opts) < 0)
die(_("diff_setup_done failed"));
diff_tree_sha1(head, new_head, "", &opts);
diffcore_std(&opts);
diff_flush(&opts);
}
/* Run a post-merge hook */
run_hook(NULL, "post-merge", squash ? "1" : "0", NULL);
strbuf_release(&reflog_message);
}
static void prepare_bases(struct base_tree_info *bases,
struct commit *base,
struct commit **list,
int total)
{
struct commit *commit;
struct rev_info revs;
struct diff_options diffopt;
int i;
if (!base)
return;
diff_setup(&diffopt);
DIFF_OPT_SET(&diffopt, RECURSIVE);
diff_setup_done(&diffopt);
oidcpy(&bases->base_commit, &base->object.oid);
init_revisions(&revs, NULL);
revs.max_parents = 1;
revs.topo_order = 1;
for (i = 0; i < total; i++) {
list[i]->object.flags &= ~UNINTERESTING;
add_pending_object(&revs, &list[i]->object, "rev_list");
list[i]->util = (void *)1;
}
base->object.flags |= UNINTERESTING;
add_pending_object(&revs, &base->object, "base");
if (prepare_revision_walk(&revs))
die(_("revision walk setup failed"));
/*
* Traverse the commits list, get prerequisite patch ids
* and stuff them in bases structure.
*/
while ((commit = get_revision(&revs)) != NULL) {
unsigned char sha1[20];
struct object_id *patch_id;
if (commit->util)
continue;
if (commit_patch_id(commit, &diffopt, sha1))
die(_("cannot get patch id"));
ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id);
patch_id = bases->patch_id + bases->nr_patch_id;
hashcpy(patch_id->hash, sha1);
bases->nr_patch_id++;
}
}
int main(int ac, const char **av)
{
int stage1, stage2;
setup_git_directory();
git_config(git_diff_config);
read_cache();
diff_setup(&diff_options);
while (1 < ac && av[1][0] == '-') {
const char *arg = av[1];
if (!strcmp(arg, "-r"))
; /* as usual */
else {
int diff_opt_cnt;
diff_opt_cnt = diff_opt_parse(&diff_options,
av+1, ac-1);
if (diff_opt_cnt < 0)
usage(diff_stages_usage);
else if (diff_opt_cnt) {
av += diff_opt_cnt;
ac -= diff_opt_cnt;
continue;
}
else
usage(diff_stages_usage);
}
ac--; av++;
}
if (ac < 3 ||
sscanf(av[1], "%d", &stage1) != 1 ||
! (0 <= stage1 && stage1 <= 3) ||
sscanf(av[2], "%d", &stage2) != 1 ||
! (0 <= stage2 && stage2 <= 3))
usage(diff_stages_usage);
av += 3; /* The rest from av[0] are for paths restriction. */
diff_options.paths = av;
if (diff_setup_done(&diff_options) < 0)
usage(diff_stages_usage);
diff_stages(stage1, stage2);
diffcore_std(&diff_options);
diff_flush(&diff_options);
return 0;
}
/**
* Returns 1 if there are uncommitted changes, 0 otherwise.
*/
static int has_uncommitted_changes(const char *prefix)
{
struct rev_info rev_info;
int result;
if (is_cache_unborn())
return 0;
init_revisions(&rev_info, prefix);
DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
DIFF_OPT_SET(&rev_info.diffopt, QUICK);
add_head_to_pending(&rev_info);
diff_setup_done(&rev_info.diffopt);
result = run_diff_index(&rev_info, 1);
return diff_result_code(&rev_info.diffopt, result);
}
static void calculate_changed_submodule_paths(void)
{
struct rev_info rev;
struct commit *commit;
struct argv_array argv = ARGV_ARRAY_INIT;
/* No need to check if there are no submodules configured */
if (!config_name_for_path.nr)
return;
init_revisions(&rev, NULL);
argv_array_push(&argv, "--"); /* argv[0] program name */
sha1_array_for_each_unique(&ref_tips_after_fetch,
add_sha1_to_argv, &argv);
argv_array_push(&argv, "--not");
sha1_array_for_each_unique(&ref_tips_before_fetch,
add_sha1_to_argv, &argv);
setup_revisions(argv.argc, argv.argv, &rev, NULL);
if (prepare_revision_walk(&rev))
die("revision walk setup failed");
/*
* Collect all submodules (whether checked out or not) for which new
* commits have been recorded upstream in "changed_submodule_paths".
*/
while ((commit = get_revision(&rev))) {
struct commit_list *parent = commit->parents;
while (parent) {
struct diff_options diff_opts;
diff_setup(&diff_opts);
DIFF_OPT_SET(&diff_opts, RECURSIVE);
diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
diff_opts.format_callback = submodule_collect_changed_cb;
if (diff_setup_done(&diff_opts) < 0)
die("diff_setup_done failed");
diff_tree_sha1(parent->item->object.sha1, commit->object.sha1, "", &diff_opts);
diffcore_std(&diff_opts);
diff_flush(&diff_opts);
parent = parent->next;
}
}
argv_array_clear(&argv);
sha1_array_clear(&ref_tips_before_fetch);
sha1_array_clear(&ref_tips_after_fetch);
initialized_fetch_ref_tips = 0;
}
static void print_summary(const char *prefix, const unsigned char *sha1)
{
struct rev_info rev;
struct commit *commit;
static const char *format = "format:%h: \"%s\"";
unsigned char junk_sha1[20];
const char *head = resolve_ref("HEAD", junk_sha1, 0, NULL);
commit = lookup_commit(sha1);
if (!commit)
die("couldn't look up newly created commit");
if (!commit || parse_commit(commit))
die("could not parse newly created commit");
init_revisions(&rev, prefix);
setup_revisions(0, NULL, &rev, NULL);
rev.abbrev = 0;
rev.diff = 1;
rev.diffopt.output_format =
DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
rev.verbose_header = 1;
rev.show_root_diff = 1;
get_commit_format(format, &rev);
rev.always_show_header = 0;
rev.diffopt.detect_rename = 1;
rev.diffopt.rename_limit = 100;
rev.diffopt.break_opt = 0;
diff_setup_done(&rev.diffopt);
printf("[%s%s]: created ",
!prefixcmp(head, "refs/heads/") ?
head + 11 :
!strcmp(head, "HEAD") ?
"detached HEAD" :
head,
initial_commit ? " (root-commit)" : "");
if (!log_tree_commit(&rev, commit)) {
struct strbuf buf = STRBUF_INIT;
format_commit_message(commit, format + 7, &buf, DATE_NORMAL);
printf("%s\n", buf.buf);
strbuf_release(&buf);
}
}
static void print_summary(const char *prefix, const unsigned char *sha1)
{
struct rev_info rev;
struct commit *commit;
commit = lookup_commit(sha1);
if (!commit)
die("couldn't look up newly created commit");
if (!commit || parse_commit(commit))
die("could not parse newly created commit");
init_revisions(&rev, prefix);
setup_revisions(0, NULL, &rev, NULL);
rev.abbrev = 0;
rev.diff = 1;
rev.diffopt.output_format =
DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
rev.verbose_header = 1;
rev.show_root_diff = 1;
get_commit_format("format:%h: %s", &rev);
rev.always_show_header = 0;
rev.diffopt.detect_rename = 1;
rev.diffopt.rename_limit = 100;
rev.diffopt.break_opt = 0;
diff_setup_done(&rev.diffopt);
printf("Created %scommit ", initial_commit ? "initial " : "");
if (!log_tree_commit(&rev, commit)) {
struct strbuf buf = STRBUF_INIT;
format_commit_message(commit, "%h: %s", &buf);
printf("%s\n", buf.buf);
strbuf_release(&buf);
}
}
/*
* We have an origin -- find the path that corresponds to it in its
* parent and return an origin structure to represent it.
*/
static struct blame_origin *find_rename(struct commit *parent,
struct blame_origin *origin)
{
struct blame_origin *porigin = NULL;
struct diff_options diff_opts;
int i;
diff_setup(&diff_opts);
DIFF_OPT_SET(&diff_opts, RECURSIVE);
diff_opts.detect_rename = DIFF_DETECT_RENAME;
diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
diff_opts.single_follow = origin->path;
diff_setup_done(&diff_opts);
if (is_null_oid(&origin->commit->object.oid))
do_diff_cache(&parent->tree->object.oid, &diff_opts);
else
diff_tree_oid(&parent->tree->object.oid,
&origin->commit->tree->object.oid,
"", &diff_opts);
diffcore_std(&diff_opts);
for (i = 0; i < diff_queued_diff.nr; i++) {
struct diff_filepair *p = diff_queued_diff.queue[i];
if ((p->status == 'R' || p->status == 'C') &&
!strcmp(p->two->path, origin->path)) {
porigin = get_origin(parent, p->one->path);
oidcpy(&porigin->blob_oid, &p->one->oid);
porigin->mode = p->one->mode;
break;
}
}
diff_flush(&diff_opts);
clear_pathspec(&diff_opts.pathspec);
return porigin;
}
static void print_summary(const char *prefix, const unsigned char *sha1,
int initial_commit)
{
struct rev_info rev;
struct commit *commit;
struct strbuf format = STRBUF_INIT;
unsigned char junk_sha1[20];
const char *head;
struct pretty_print_context pctx = {0};
struct strbuf author_ident = STRBUF_INIT;
struct strbuf committer_ident = STRBUF_INIT;
commit = lookup_commit(sha1);
if (!commit)
die(_("couldn't look up newly created commit"));
if (parse_commit(commit))
die(_("could not parse newly created commit"));
strbuf_addstr(&format, "format:%h] %s");
format_commit_message(commit, "%an <%ae>", &author_ident, &pctx);
format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx);
if (strbuf_cmp(&author_ident, &committer_ident)) {
strbuf_addstr(&format, "\n Author: ");
strbuf_addbuf_percentquote(&format, &author_ident);
}
if (!committer_ident_sufficiently_given()) {
strbuf_addstr(&format, "\n Committer: ");
strbuf_addbuf_percentquote(&format, &committer_ident);
if (advice_implicit_identity) {
strbuf_addch(&format, '\n');
strbuf_addstr(&format, _(implicit_ident_advice));
}
}
strbuf_release(&author_ident);
strbuf_release(&committer_ident);
init_revisions(&rev, prefix);
setup_revisions(0, NULL, &rev, NULL);
rev.diff = 1;
rev.diffopt.output_format =
DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
rev.verbose_header = 1;
rev.show_root_diff = 1;
get_commit_format(format.buf, &rev);
rev.always_show_header = 0;
rev.diffopt.detect_rename = 1;
rev.diffopt.break_opt = 0;
diff_setup_done(&rev.diffopt);
head = resolve_ref_unsafe("HEAD", junk_sha1, 0, NULL);
printf("[%s%s ",
starts_with(head, "refs/heads/") ?
head + 11 :
!strcmp(head, "HEAD") ?
_("detached HEAD") :
head,
initial_commit ? _(" (root-commit)") : "");
if (!log_tree_commit(&rev, commit)) {
rev.always_show_header = 1;
rev.use_terminator = 1;
log_tree_commit(&rev, commit);
}
strbuf_release(&format);
}
static void make_cover_letter(struct rev_info *rev, int use_stdout,
int numbered, int numbered_files,
struct commit *origin,
int nr, struct commit **list, struct commit *head)
{
const char *committer;
const char *subject_start = NULL;
const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n";
const char *msg;
const char *extra_headers = rev->extra_headers;
struct shortlog log;
struct strbuf sb = STRBUF_INIT;
int i;
const char *encoding = "UTF-8";
struct diff_options opts;
int need_8bit_cte = 0;
struct commit *commit = NULL;
if (rev->commit_format != CMIT_FMT_EMAIL)
die("Cover letter needs email format");
committer = git_committer_info(0);
if (!numbered_files) {
/*
* We fake a commit for the cover letter so we get the filename
* desired.
*/
commit = xcalloc(1, sizeof(*commit));
commit->buffer = xmalloc(400);
snprintf(commit->buffer, 400,
"tree 0000000000000000000000000000000000000000\n"
"parent %s\n"
"author %s\n"
"committer %s\n\n"
"cover letter\n",
sha1_to_hex(head->object.sha1), committer, committer);
}
if (!use_stdout && reopen_stdout(commit, rev))
return;
if (commit) {
free(commit->buffer);
free(commit);
}
log_write_email_headers(rev, head, &subject_start, &extra_headers,
&need_8bit_cte);
for (i = 0; !need_8bit_cte && i < nr; i++)
if (has_non_ascii(list[i]->buffer))
need_8bit_cte = 1;
msg = body;
pp_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
encoding);
pp_title_line(CMIT_FMT_EMAIL, &msg, &sb, subject_start, extra_headers,
encoding, need_8bit_cte);
pp_remainder(CMIT_FMT_EMAIL, &msg, &sb, 0);
printf("%s\n", sb.buf);
strbuf_release(&sb);
shortlog_init(&log);
log.wrap_lines = 1;
log.wrap = 72;
log.in1 = 2;
log.in2 = 4;
for (i = 0; i < nr; i++)
shortlog_add_commit(&log, list[i]);
shortlog_output(&log);
/*
* We can only do diffstat with a unique reference point
*/
if (!origin)
return;
memcpy(&opts, &rev->diffopt, sizeof(opts));
opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
diff_setup_done(&opts);
diff_tree_sha1(origin->tree->object.sha1,
head->tree->object.sha1,
"", &opts);
diffcore_std(&opts);
diff_flush(&opts);
printf("\n");
}
int cmd_diff(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info rev;
struct object_array_entry ent[100];
int ents = 0, blobs = 0, paths = 0;
const char *path = NULL;
struct blobinfo blob[2];
int nongit;
int result = 0;
/*
* We could get N tree-ish in the rev.pending_objects list.
* Also there could be M blobs there, and P pathspecs.
*
* N=0, M=0:
* cache vs files (diff-files)
* N=0, M=2:
* compare two random blobs. P must be zero.
* N=0, M=1, P=1:
* compare a blob with a working tree file.
*
* N=1, M=0:
* tree vs cache (diff-index --cached)
*
* N=2, M=0:
* tree vs tree (diff-tree)
*
* N=0, M=0, P=2:
* compare two filesystem entities (aka --no-index).
*
* Other cases are errors.
*/
prefix = setup_git_directory_gently(&nongit);
gitmodules_config();
git_config(git_diff_ui_config, NULL);
if (diff_use_color_default == -1)
diff_use_color_default = git_use_color_default;
init_revisions(&rev, prefix);
/* If this is a no-index diff, just run it and exit there. */
diff_no_index(&rev, argc, argv, nongit, prefix);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
/* Default to let external and textconv be used */
DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
if (nongit)
die("Not a git repository");
argc = setup_revisions(argc, argv, &rev, NULL);
if (!rev.diffopt.output_format) {
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
if (diff_setup_done(&rev.diffopt) < 0)
die("diff_setup_done failed");
}
DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
/*
* If the user asked for our exit code then don't start a
* pager or we would end up reporting its exit code instead.
*/
if (!DIFF_OPT_TST(&rev.diffopt, EXIT_WITH_STATUS) &&
check_pager_config("diff") != 0)
setup_pager();
/*
* Do we have --cached and not have a pending object, then
* default to HEAD by hand. Eek.
*/
if (!rev.pending.nr) {
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--"))
break;
else if (!strcmp(arg, "--cached") ||
!strcmp(arg, "--staged")) {
add_head_to_pending(&rev);
if (!rev.pending.nr) {
struct tree *tree;
tree = lookup_tree((const unsigned char*)EMPTY_TREE_SHA1_BIN);
add_pending_object(&rev, &tree->object, "HEAD");
}
break;
}
}
}
for (i = 0; i < rev.pending.nr; i++) {
struct object_array_entry *list = rev.pending.objects+i;
struct object *obj = list->item;
const char *name = list->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
obj = parse_object(obj->sha1);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die("invalid object '%s' given.", name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == OBJ_TREE) {
if (ARRAY_SIZE(ent) <= ents)
die("more than %d trees given: '%s'",
(int) ARRAY_SIZE(ent), name);
obj->flags |= flags;
ent[ents].item = obj;
ent[ents].name = name;
ents++;
continue;
}
if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die("more than two blobs given: '%s'", name);
hashcpy(blob[blobs].sha1, obj->sha1);
blob[blobs].name = name;
blob[blobs].mode = list->mode;
blobs++;
continue;
}
die("unhandled object '%s' given.", name);
}
if (rev.prune_data.nr) {
if (!path)
path = rev.prune_data.items[0].match;
paths += rev.prune_data.nr;
}
/*
* Now, do the arguments look reasonable?
*/
if (!ents) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
break;
case 1:
if (paths != 1)
usage(builtin_diff_usage);
result = builtin_diff_b_f(&rev, argc, argv, blob, path);
break;
case 2:
if (paths)
usage(builtin_diff_usage);
result = builtin_diff_blobs(&rev, argc, argv, blob);
break;
default:
usage(builtin_diff_usage);
}
}
else if (blobs)
usage(builtin_diff_usage);
else if (ents == 1)
result = builtin_diff_index(&rev, argc, argv);
else if (ents == 2)
result = builtin_diff_tree(&rev, argc, argv, ent);
else if (ent[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
* between A and B. We have ent[0] == merge-base,
* ent[ents-2] == A, and ent[ents-1] == B. Show diff
* between the base and B. Note that we pick one
* merge base at random if there are more than one.
*/
ent[1] = ent[ents-1];
result = builtin_diff_tree(&rev, argc, argv, ent);
} else
result = builtin_diff_combined(&rev, argc, argv,
ent, ents);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();
return result;
}
static void make_cover_letter(struct rev_info *rev, int use_stdout,
int numbered, int numbered_files,
struct commit *origin,
int nr, struct commit **list, struct commit *head,
const char *branch_name,
int quiet)
{
const char *committer;
const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n";
const char *msg;
struct shortlog log;
struct strbuf sb = STRBUF_INIT;
int i;
const char *encoding = "UTF-8";
struct diff_options opts;
int need_8bit_cte = 0;
struct pretty_print_context pp = {0};
if (rev->commit_format != CMIT_FMT_EMAIL)
die(_("Cover letter needs email format"));
committer = git_committer_info(0);
if (!use_stdout &&
reopen_stdout(NULL, numbered_files ? NULL : "cover-letter", rev, quiet))
return;
log_write_email_headers(rev, head, &pp.subject, &pp.after_subject,
&need_8bit_cte);
for (i = 0; !need_8bit_cte && i < nr; i++)
if (has_non_ascii(list[i]->buffer))
need_8bit_cte = 1;
msg = body;
pp.fmt = CMIT_FMT_EMAIL;
pp.date_mode = DATE_RFC2822;
pp_user_info(&pp, NULL, &sb, committer, encoding);
pp_title_line(&pp, &msg, &sb, encoding, need_8bit_cte);
pp_remainder(&pp, &msg, &sb, 0);
add_branch_description(&sb, branch_name);
printf("%s\n", sb.buf);
strbuf_release(&sb);
shortlog_init(&log);
log.wrap_lines = 1;
log.wrap = 72;
log.in1 = 2;
log.in2 = 4;
for (i = 0; i < nr; i++)
shortlog_add_commit(&log, list[i]);
shortlog_output(&log);
/*
* We can only do diffstat with a unique reference point
*/
if (!origin)
return;
memcpy(&opts, &rev->diffopt, sizeof(opts));
opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
diff_setup_done(&opts);
diff_tree_sha1(origin->tree->object.sha1,
head->tree->object.sha1,
"", &opts);
diffcore_std(&opts);
diff_flush(&opts);
printf("\n");
print_signature();
}
static void try_to_follow_renames(struct tree_desc *t1, struct tree_desc *t2, const char *base, struct diff_options *opt)
{
struct diff_options diff_opts;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_filepair *choice;
const char *paths[1];
int i;
/* Remove the file creation entry from the diff queue, and remember it */
choice = q->queue[0];
q->nr = 0;
diff_setup(&diff_opts);
DIFF_OPT_SET(&diff_opts, RECURSIVE);
diff_opts.detect_rename = DIFF_DETECT_RENAME;
diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
diff_opts.single_follow = opt->paths[0];
diff_opts.break_opt = opt->break_opt;
paths[0] = NULL;
diff_tree_setup_paths(paths, &diff_opts);
if (diff_setup_done(&diff_opts) < 0)
die("unable to set up diff options to follow renames");
diff_tree(t1, t2, base, &diff_opts);
diffcore_std(&diff_opts);
diff_tree_release_paths(&diff_opts);
/* Go through the new set of filepairing, and see if we find a more interesting one */
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
/*
* Found a source? Not only do we use that for the new
* diff_queued_diff, we will also use that as the path in
* the future!
*/
if ((p->status == 'R' || p->status == 'C') && !strcmp(p->two->path, opt->paths[0])) {
/* Switch the file-pairs around */
q->queue[i] = choice;
choice = p;
/* Update the path we use from now on.. */
diff_tree_release_paths(opt);
opt->paths[0] = xstrdup(p->one->path);
diff_tree_setup_paths(opt->paths, opt);
break;
}
}
/*
* Then, discard all the non-relevane file pairs...
*/
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
diff_free_filepair(p);
}
/*
* .. and re-instate the one we want (which might be either the
* original one, or the rename/copy we found)
*/
q->queue[0] = choice;
q->nr = 1;
}
void diff_no_index(struct rev_info *revs,
int argc, const char **argv,
int nongit, const char *prefix)
{
int i;
int no_index = 0;
unsigned options = 0;
/* Were we asked to do --no-index explicitly? */
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--"))
return;
if (!strcmp(argv[i], "--no-index"))
no_index = 1;
if (argv[i][0] != '-')
break;
}
if (!no_index && !nongit) {
/*
* Inside a git repository, without --no-index. Only
* when a path outside the repository is given,
* e.g. "git diff /var/tmp/[12]", or "git diff
* Makefile /var/tmp/Makefile", allow it to be used as
* a colourful "diff" replacement.
*/
if ((argc != i + 2) ||
(!path_outside_repo(argv[i]) &&
!path_outside_repo(argv[i+1])))
return;
}
if (argc != i + 2)
die("git diff %s takes two paths",
no_index ? "--no-index" : "[--no-index]");
/*
* If the user asked for our exit code then don't start a
* pager or we would end up reporting its exit code instead.
*/
if (!DIFF_OPT_TST(&revs->diffopt, EXIT_WITH_STATUS))
setup_pager();
diff_setup(&revs->diffopt);
if (!revs->diffopt.output_format)
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
for (i = 1; i < argc - 2; ) {
int j;
if (!strcmp(argv[i], "--no-index"))
i++;
else if (!strcmp(argv[1], "-q"))
options |= DIFF_SILENT_ON_REMOVED;
else {
j = diff_opt_parse(&revs->diffopt, argv + i, argc - i);
if (!j)
die("invalid diff option/value: %s", argv[i]);
i += j;
}
}
if (prefix) {
int len = strlen(prefix);
revs->diffopt.paths = xcalloc(2, sizeof(char*));
for (i = 0; i < 2; i++) {
const char *p = argv[argc - 2 + i];
/*
* stdin should be spelled as '-'; if you have
* path that is '-', spell it as ./-.
*/
p = (strcmp(p, "-")
? xstrdup(prefix_filename(prefix, len, p))
: p);
revs->diffopt.paths[i] = p;
}
}
else
revs->diffopt.paths = argv + argc - 2;
revs->diffopt.nr_paths = 2;
DIFF_OPT_SET(&revs->diffopt, EXIT_WITH_STATUS);
DIFF_OPT_SET(&revs->diffopt, NO_INDEX);
revs->max_count = -2;
if (diff_setup_done(&revs->diffopt) < 0)
die("diff_setup_done failed");
if (queue_diff(&revs->diffopt, revs->diffopt.paths[0],
revs->diffopt.paths[1]))
exit(1);
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
/*
* The return code for --no-index imitates diff(1):
* 0 = no changes, 1 = changes, else error
*/
exit(revs->diffopt.found_changes);
}
/*
* Parse revision information, filling in the "rev_info" structure,
* and removing the used arguments from the argument list.
*
* Returns the number of arguments left that weren't recognized
* (which are also moved to the head of the argument list)
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
{
int i, flags, left, seen_dashdash;
/* First, search for "--" */
seen_dashdash = 0;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (strcmp(arg, "--"))
continue;
argv[i] = NULL;
argc = i;
if (argv[i + 1])
revs->prune_data = get_pathspec(revs->prefix, argv + i + 1);
seen_dashdash = 1;
break;
}
/* Second, deal with arguments and options */
flags = 0;
for (left = i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg == '-') {
int opts;
if (!strcmp(arg, "--all")) {
handle_refs(revs, flags, for_each_ref);
continue;
}
if (!strcmp(arg, "--branches")) {
handle_refs(revs, flags, for_each_branch_ref);
continue;
}
if (!strcmp(arg, "--tags")) {
handle_refs(revs, flags, for_each_tag_ref);
continue;
}
if (!strcmp(arg, "--remotes")) {
handle_refs(revs, flags, for_each_remote_ref);
continue;
}
if (!strcmp(arg, "--reflog")) {
handle_reflog(revs, flags);
continue;
}
if (!strcmp(arg, "--not")) {
flags ^= UNINTERESTING;
continue;
}
if (!strcmp(arg, "--no-walk")) {
revs->no_walk = 1;
continue;
}
if (!strcmp(arg, "--do-walk")) {
revs->no_walk = 0;
continue;
}
opts = handle_revision_opt(revs, argc - i, argv + i, &left, argv);
if (opts > 0) {
i += opts - 1;
continue;
}
if (opts < 0)
exit(128);
continue;
}
if (handle_revision_arg(arg, revs, flags, seen_dashdash)) {
int j;
if (seen_dashdash || *arg == '^')
die("bad revision '%s'", arg);
/* If we didn't have a "--":
* (1) all filenames must exist;
* (2) all rev-args must not be interpretable
* as a valid filename.
* but the latter we have checked in the main loop.
*/
for (j = i; j < argc; j++)
verify_filename(revs->prefix, argv[j]);
revs->prune_data = get_pathspec(revs->prefix,
argv + i);
break;
}
}
if (revs->def == NULL)
revs->def = def;
if (revs->show_merge)
prepare_show_merge(revs);
if (revs->def && !revs->pending.nr) {
unsigned char sha1[20];
struct object *object;
unsigned mode;
if (get_sha1_with_mode(revs->def, sha1, &mode))
die("bad default revision '%s'", revs->def);
object = get_reference(revs, revs->def, sha1, 0);
add_pending_object_with_mode(revs, object, revs->def, mode);
}
/* Did the user ask for any diff output? Run the diff! */
if (revs->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT)
revs->diff = 1;
/* Pickaxe, diff-filter and rename following need diffs */
if (revs->diffopt.pickaxe ||
revs->diffopt.filter ||
DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES))
revs->diff = 1;
if (revs->topo_order)
revs->limited = 1;
if (revs->prune_data) {
diff_tree_setup_paths(revs->prune_data, &revs->pruning);
/* Can't prune commits with rename following: the paths change.. */
if (!DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES))
revs->prune = 1;
if (!revs->full_diff)
diff_tree_setup_paths(revs->prune_data, &revs->diffopt);
}
if (revs->combine_merges) {
revs->ignore_merges = 0;
if (revs->dense_combined_merges && !revs->diffopt.output_format)
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
}
revs->diffopt.abbrev = revs->abbrev;
if (diff_setup_done(&revs->diffopt) < 0)
die("diff_setup_done failed");
compile_grep_patterns(&revs->grep_filter);
if (revs->reverse && revs->reflog_info)
die("cannot combine --reverse with --walk-reflogs");
if (revs->rewrite_parents && revs->children.name)
die("cannot combine --parents and --children");
/*
* Limitations on the graph functionality
*/
if (revs->reverse && revs->graph)
die("cannot combine --reverse with --graph");
if (revs->reflog_info && revs->graph)
die("cannot combine --walk-reflogs with --graph");
return left;
}
static void diff_tree_local(struct notes_merge_options *o,
struct notes_merge_pair *changes, int len,
const unsigned char *base,
const unsigned char *local)
{
struct diff_options opt;
int i;
trace_printf("\tdiff_tree_local(len = %i, base = %.7s, local = %.7s)\n",
len, sha1_to_hex(base), sha1_to_hex(local));
diff_setup(&opt);
DIFF_OPT_SET(&opt, RECURSIVE);
opt.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opt) < 0)
die("diff_setup_done failed");
diff_tree_sha1(base, local, "", &opt);
diffcore_std(&opt);
for (i = 0; i < diff_queued_diff.nr; i++) {
struct diff_filepair *p = diff_queued_diff.queue[i];
struct notes_merge_pair *mp;
int match;
unsigned char obj[20];
if (verify_notes_filepair(p, obj)) {
trace_printf("\t\tCannot merge entry '%s' (%c): "
"%.7s -> %.7s. Skipping!\n", p->one->path,
p->status, sha1_to_hex(p->one->sha1),
sha1_to_hex(p->two->sha1));
continue;
}
mp = find_notes_merge_pair_pos(changes, len, obj, 0, &match);
if (!match) {
trace_printf("\t\tIgnoring local-only change for %s: "
"%.7s -> %.7s\n", sha1_to_hex(obj),
sha1_to_hex(p->one->sha1),
sha1_to_hex(p->two->sha1));
continue;
}
assert(!hashcmp(mp->obj, obj));
if (is_null_sha1(p->two->sha1)) { /* deletion */
/*
* Either this is a true deletion (1), or it is part
* of an A/D pair (2), or D/A pair (3):
*
* (1) mp->local is uninitialized; set it to null_sha1
* (2) mp->local is not uninitialized; don't touch it
* (3) mp->local is uninitialized; set it to null_sha1
* (will be overwritten by following addition)
*/
if (!hashcmp(mp->local, uninitialized))
hashclr(mp->local);
} else if (is_null_sha1(p->one->sha1)) { /* addition */
/*
* Either this is a true addition (1), or it is part
* of an A/D pair (2), or D/A pair (3):
*
* (1) mp->local is uninitialized; set to p->two->sha1
* (2) mp->local is uninitialized; set to p->two->sha1
* (3) mp->local is null_sha1; set to p->two->sha1
*/
assert(is_null_sha1(mp->local) ||
!hashcmp(mp->local, uninitialized));
hashcpy(mp->local, p->two->sha1);
} else { /* modification */
/*
* This is a true modification. p->one->sha1 shall
* match mp->base, and mp->local shall be uninitialized.
* Set mp->local to p->two->sha1.
*/
assert(!hashcmp(p->one->sha1, mp->base));
assert(!hashcmp(mp->local, uninitialized));
hashcpy(mp->local, p->two->sha1);
}
trace_printf("\t\tStored local change for %s: %.7s -> %.7s\n",
sha1_to_hex(mp->obj), sha1_to_hex(mp->base),
sha1_to_hex(mp->local));
}
diff_flush(&opt);
diff_tree_release_paths(&opt);
}
static struct notes_merge_pair *diff_tree_remote(struct notes_merge_options *o,
const unsigned char *base,
const unsigned char *remote,
int *num_changes)
{
struct diff_options opt;
struct notes_merge_pair *changes;
int i, len = 0;
trace_printf("\tdiff_tree_remote(base = %.7s, remote = %.7s)\n",
sha1_to_hex(base), sha1_to_hex(remote));
diff_setup(&opt);
DIFF_OPT_SET(&opt, RECURSIVE);
opt.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opt) < 0)
die("diff_setup_done failed");
diff_tree_sha1(base, remote, "", &opt);
diffcore_std(&opt);
changes = xcalloc(diff_queued_diff.nr, sizeof(struct notes_merge_pair));
for (i = 0; i < diff_queued_diff.nr; i++) {
struct diff_filepair *p = diff_queued_diff.queue[i];
struct notes_merge_pair *mp;
int occupied;
unsigned char obj[20];
if (verify_notes_filepair(p, obj)) {
trace_printf("\t\tCannot merge entry '%s' (%c): "
"%.7s -> %.7s. Skipping!\n", p->one->path,
p->status, sha1_to_hex(p->one->sha1),
sha1_to_hex(p->two->sha1));
continue;
}
mp = find_notes_merge_pair_pos(changes, len, obj, 1, &occupied);
if (occupied) {
/* We've found an addition/deletion pair */
assert(!hashcmp(mp->obj, obj));
if (is_null_sha1(p->one->sha1)) { /* addition */
assert(is_null_sha1(mp->remote));
hashcpy(mp->remote, p->two->sha1);
} else if (is_null_sha1(p->two->sha1)) { /* deletion */
assert(is_null_sha1(mp->base));
hashcpy(mp->base, p->one->sha1);
} else
assert(!"Invalid existing change recorded");
} else {
hashcpy(mp->obj, obj);
hashcpy(mp->base, p->one->sha1);
hashcpy(mp->local, uninitialized);
hashcpy(mp->remote, p->two->sha1);
len++;
}
trace_printf("\t\tStored remote change for %s: %.7s -> %.7s\n",
sha1_to_hex(mp->obj), sha1_to_hex(mp->base),
sha1_to_hex(mp->remote));
}
diff_flush(&opt);
diff_tree_release_paths(&opt);
*num_changes = len;
return changes;
}
int cmd_diff(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info rev;
struct object_array ent = OBJECT_ARRAY_INIT;
int blobs = 0, paths = 0;
struct blobinfo blob[2];
int nongit = 0, no_index = 0;
int result = 0;
/*
* We could get N tree-ish in the rev.pending_objects list.
* Also there could be M blobs there, and P pathspecs.
*
* N=0, M=0:
* cache vs files (diff-files)
* N=0, M=2:
* compare two random blobs. P must be zero.
* N=0, M=1, P=1:
* compare a blob with a working tree file.
*
* N=1, M=0:
* tree vs cache (diff-index --cached)
*
* N=2, M=0:
* tree vs tree (diff-tree)
*
* N=0, M=0, P=2:
* compare two filesystem entities (aka --no-index).
*
* Other cases are errors.
*/
/* Were we asked to do --no-index explicitly? */
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
i++;
break;
}
if (!strcmp(argv[i], "--no-index"))
no_index = DIFF_NO_INDEX_EXPLICIT;
if (argv[i][0] != '-')
break;
}
if (!no_index)
prefix = setup_git_directory_gently(&nongit);
/*
* Treat git diff with at least one path outside of the
* repo the same as if the command would have been executed
* outside of a git repository. In this case it behaves
* the same way as "git diff --no-index <a> <b>", which acts
* as a colourful "diff" replacement.
*/
if (nongit || ((argc == i + 2) &&
(!path_inside_repo(prefix, argv[i]) ||
!path_inside_repo(prefix, argv[i + 1]))))
no_index = DIFF_NO_INDEX_IMPLICIT;
if (!no_index)
gitmodules_config();
init_diff_ui_defaults();
git_config(git_diff_ui_config, NULL);
precompose_argv(argc, argv);
init_revisions(&rev, prefix);
if (no_index && argc != i + 2) {
if (no_index == DIFF_NO_INDEX_IMPLICIT) {
/*
* There was no --no-index and there were not two
* paths. It is possible that the user intended
* to do an inside-repository operation.
*/
fprintf(stderr, "Not a git repository\n");
fprintf(stderr,
"To compare two paths outside a working tree:\n");
}
/* Give the usage message for non-repository usage and exit. */
usagef("git diff %s <path> <path>",
no_index == DIFF_NO_INDEX_EXPLICIT ?
"--no-index" : "[--no-index]");
}
if (no_index)
/* If this is a no-index diff, just run it and exit there. */
diff_no_index(&rev, argc, argv);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
/* Scale to real terminal size and respect statGraphWidth config */
rev.diffopt.stat_width = -1;
rev.diffopt.stat_graph_width = -1;
/* Default to let external and textconv be used */
DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
if (nongit)
die(_("Not a git repository"));
argc = setup_revisions(argc, argv, &rev, NULL);
if (!rev.diffopt.output_format) {
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
diff_setup_done(&rev.diffopt);
}
DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
setup_diff_pager(&rev.diffopt);
/*
* Do we have --cached and not have a pending object, then
* default to HEAD by hand. Eek.
*/
if (!rev.pending.nr) {
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--"))
break;
else if (!strcmp(arg, "--cached") ||
!strcmp(arg, "--staged")) {
add_head_to_pending(&rev);
if (!rev.pending.nr) {
struct tree *tree;
tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
add_pending_object(&rev, &tree->object, "HEAD");
}
break;
}
}
}
for (i = 0; i < rev.pending.nr; i++) {
struct object_array_entry *entry = &rev.pending.objects[i];
struct object *obj = entry->item;
const char *name = entry->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
obj = parse_object(obj->oid.hash);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die(_("invalid object '%s' given."), name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == OBJ_TREE) {
obj->flags |= flags;
add_object_array(obj, name, &ent);
} else if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die(_("more than two blobs given: '%s'"), name);
hashcpy(blob[blobs].sha1, obj->oid.hash);
blob[blobs].name = name;
blob[blobs].mode = entry->mode;
blobs++;
} else {
die(_("unhandled object '%s' given."), name);
}
}
if (rev.prune_data.nr)
paths += rev.prune_data.nr;
/*
* Now, do the arguments look reasonable?
*/
if (!ent.nr) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
break;
case 1:
if (paths != 1)
usage(builtin_diff_usage);
result = builtin_diff_b_f(&rev, argc, argv, blob);
break;
case 2:
if (paths)
usage(builtin_diff_usage);
result = builtin_diff_blobs(&rev, argc, argv, blob);
break;
default:
usage(builtin_diff_usage);
}
}
else if (blobs)
usage(builtin_diff_usage);
else if (ent.nr == 1)
result = builtin_diff_index(&rev, argc, argv);
else if (ent.nr == 2)
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0], &ent.objects[1]);
else if (ent.objects[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
* between A and B. We have ent.objects[0] ==
* merge-base, ent.objects[ents-2] == A, and
* ent.objects[ents-1] == B. Show diff between the
* base and B. Note that we pick one merge base at
* random if there are more than one.
*/
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0],
&ent.objects[ent.nr-1]);
} else
result = builtin_diff_combined(&rev, argc, argv,
ent.objects, ent.nr);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();
return result;
}
static void make_cover_letter(struct rev_info *rev, int use_stdout,
int numbered, int numbered_files,
struct commit *origin,
int nr, struct commit **list, struct commit *head)
{
const char *committer;
char *head_sha1;
const char *subject_start = NULL;
const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n";
const char *msg;
const char *extra_headers = rev->extra_headers;
struct shortlog log;
struct strbuf sb = STRBUF_INIT;
int i;
const char *encoding = "utf-8";
struct diff_options opts;
int need_8bit_cte = 0;
if (rev->commit_format != CMIT_FMT_EMAIL)
die("Cover letter needs email format");
if (!use_stdout && reopen_stdout(numbered_files ?
NULL : "cover-letter", 0, rev->total))
return;
head_sha1 = sha1_to_hex(head->object.sha1);
log_write_email_headers(rev, head_sha1, &subject_start, &extra_headers,
&need_8bit_cte);
committer = git_committer_info(0);
msg = body;
pp_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
encoding);
pp_title_line(CMIT_FMT_EMAIL, &msg, &sb, subject_start, extra_headers,
encoding, need_8bit_cte);
pp_remainder(CMIT_FMT_EMAIL, &msg, &sb, 0);
printf("%s\n", sb.buf);
strbuf_release(&sb);
shortlog_init(&log);
log.wrap_lines = 1;
log.wrap = 72;
log.in1 = 2;
log.in2 = 4;
for (i = 0; i < nr; i++)
shortlog_add_commit(&log, list[i]);
shortlog_output(&log);
/*
* We can only do diffstat with a unique reference point
*/
if (!origin)
return;
memcpy(&opts, &rev->diffopt, sizeof(opts));
opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
diff_setup_done(&opts);
diff_tree_sha1(origin->tree->object.sha1,
head->tree->object.sha1,
"", &opts);
diffcore_std(&opts);
diff_flush(&opts);
printf("\n");
}