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git/log-tree.c

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#define USE_THE_REPOSITORY_VARIABLE
#include "git-compat-util.h"
#include "commit-reach.h"
#include "config.h"
#include "diff.h"
#include "diffcore.h"
#include "environment.h"
#include "hex.h"
#include "object-name.h"
#include "object-store-ll.h"
#include "repository.h"
#include "tmp-objdir.h"
#include "commit.h"
#include "tag.h"
#include "graph.h"
#include "log-tree.h"
#include "merge-ort.h"
#include "reflog-walk.h"
#include "refs.h"
#include "replace-object.h"
#include "revision.h"
#include "string-list.h"
#include "color.h"
#include "gpg-interface.h"
#include "sequencer.h"
#include "line-log.h"
#include "help.h"
#include "range-diff.h"
#include "strmap.h"
#include "tree.h"
#include "wildmatch.h"
#include "write-or-die.h"
#include "pager.h"
static struct decoration name_decoration = { "object names" };
static int decoration_loaded;
static int decoration_flags;
static char decoration_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
GIT_COLOR_BOLD_GREEN, /* REF_LOCAL */
GIT_COLOR_BOLD_RED, /* REF_REMOTE */
GIT_COLOR_BOLD_YELLOW, /* REF_TAG */
GIT_COLOR_BOLD_MAGENTA, /* REF_STASH */
GIT_COLOR_BOLD_CYAN, /* REF_HEAD */
GIT_COLOR_BOLD_BLUE, /* GRAFTED */
};
static const char *color_decorate_slots[] = {
[DECORATION_REF_LOCAL] = "branch",
[DECORATION_REF_REMOTE] = "remoteBranch",
[DECORATION_REF_TAG] = "tag",
[DECORATION_REF_STASH] = "stash",
[DECORATION_REF_HEAD] = "HEAD",
[DECORATION_GRAFTED] = "grafted",
};
static const char *decorate_get_color(int decorate_use_color, enum decoration_type ix)
{
if (want_color(decorate_use_color))
return decoration_colors[ix];
return "";
}
define_list_config_array(color_decorate_slots);
int parse_decorate_color_config(const char *var, const char *slot_name, const char *value)
{
int slot = LOOKUP_CONFIG(color_decorate_slots, slot_name);
if (slot < 0)
return 0;
if (!value)
return config_error_nonbool(var);
return color_parse(value, decoration_colors[slot]);
}
/*
* log-tree.c uses DIFF_OPT_TST for determining whether to use color
* for showing the commit sha1, use the same check for --decorate
*/
#define decorate_get_color_opt(o, ix) \
decorate_get_color((o)->use_color, ix)
void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
{
struct name_decoration *res;
FLEX_ALLOC_STR(res, name, name);
res->type = type;
res->next = add_decoration(&name_decoration, obj, res);
}
const struct name_decoration *get_name_decoration(const struct object *obj)
{
load_ref_decorations(NULL, DECORATE_SHORT_REFS);
return lookup_decoration(&name_decoration, obj);
}
static int match_ref_pattern(const char *refname,
const struct string_list_item *item)
{
int matched = 0;
if (!item->util) {
if (!wildmatch(item->string, refname, 0))
matched = 1;
} else {
const char *rest;
if (skip_prefix(refname, item->string, &rest) &&
(!*rest || *rest == '/'))
matched = 1;
}
return matched;
}
static int ref_filter_match(const char *refname,
const struct decoration_filter *filter)
{
struct string_list_item *item;
const struct string_list *exclude_patterns = filter->exclude_ref_pattern;
const struct string_list *include_patterns = filter->include_ref_pattern;
const struct string_list *exclude_patterns_config =
filter->exclude_ref_config_pattern;
if (exclude_patterns && exclude_patterns->nr) {
for_each_string_list_item(item, exclude_patterns) {
if (match_ref_pattern(refname, item))
return 0;
}
}
if (include_patterns && include_patterns->nr) {
for_each_string_list_item(item, include_patterns) {
if (match_ref_pattern(refname, item))
return 1;
}
return 0;
}
if (exclude_patterns_config && exclude_patterns_config->nr) {
for_each_string_list_item(item, exclude_patterns_config) {
if (match_ref_pattern(refname, item))
return 0;
}
}
return 1;
}
static int add_ref_decoration(const char *refname, const char *referent UNUSED, const struct object_id *oid,
int flags UNUSED,
void *cb_data)
{
int i;
struct object *obj;
enum object_type objtype;
enum decoration_type deco_type = DECORATION_NONE;
struct decoration_filter *filter = (struct decoration_filter *)cb_data;
const char *git_replace_ref_base = ref_namespace[NAMESPACE_REPLACE].ref;
if (filter && !ref_filter_match(refname, filter))
return 0;
if (starts_with(refname, git_replace_ref_base)) {
struct object_id original_oid;
if (!replace_refs_enabled(the_repository))
return 0;
if (get_oid_hex(refname + strlen(git_replace_ref_base),
&original_oid)) {
warning("invalid replace ref %s", refname);
return 0;
}
obj = parse_object(the_repository, &original_oid);
if (obj)
add_name_decoration(DECORATION_GRAFTED, "replaced", obj);
return 0;
}
objtype = oid_object_info(the_repository, oid, NULL);
if (objtype < 0)
return 0;
obj = lookup_object_by_type(the_repository, oid, objtype);
for (i = 0; i < ARRAY_SIZE(ref_namespace); i++) {
struct ref_namespace_info *info = &ref_namespace[i];
if (!info->decoration)
continue;
if (info->exact) {
if (!strcmp(refname, info->ref)) {
deco_type = info->decoration;
break;
}
} else if (starts_with(refname, info->ref)) {
deco_type = info->decoration;
break;
}
}
add_name_decoration(deco_type, refname, obj);
while (obj->type == OBJ_TAG) {
if (!obj->parsed)
parse_object(the_repository, &obj->oid);
obj = ((struct tag *)obj)->tagged;
if (!obj)
break;
add_name_decoration(DECORATION_REF_TAG, refname, obj);
}
return 0;
}
static int add_graft_decoration(const struct commit_graft *graft,
void *cb_data UNUSED)
{
struct commit *commit = lookup_commit(the_repository, &graft->oid);
if (!commit)
return 0;
add_name_decoration(DECORATION_GRAFTED, "grafted", &commit->object);
return 0;
}
void load_ref_decorations(struct decoration_filter *filter, int flags)
{
if (!decoration_loaded) {
if (filter) {
struct string_list_item *item;
for_each_string_list_item(item, filter->exclude_ref_pattern) {
normalize_glob_ref(item, NULL, item->string);
}
for_each_string_list_item(item, filter->include_ref_pattern) {
normalize_glob_ref(item, NULL, item->string);
}
for_each_string_list_item(item, filter->exclude_ref_config_pattern) {
normalize_glob_ref(item, NULL, item->string);
}
}
decoration_loaded = 1;
decoration_flags = flags;
refs_for_each_ref(get_main_ref_store(the_repository),
add_ref_decoration, filter);
refs_head_ref(get_main_ref_store(the_repository),
add_ref_decoration, filter);
for_each_commit_graft(add_graft_decoration, filter);
}
}
static void show_parents(struct commit *commit, int abbrev, FILE *file)
{
struct commit_list *p;
for (p = commit->parents; p ; p = p->next) {
struct commit *parent = p->item;
fprintf(file, " %s",
repo_find_unique_abbrev(the_repository, &parent->object.oid, abbrev));
}
}
static void show_children(struct rev_info *opt, struct commit *commit, int abbrev)
{
struct commit_list *p = lookup_decoration(&opt->children, &commit->object);
for ( ; p; p = p->next) {
fprintf(opt->diffopt.file, " %s",
repo_find_unique_abbrev(the_repository, &p->item->object.oid, abbrev));
}
}
/*
* Do we have HEAD in the output, and also the branch it points at?
* If so, find that decoration entry for that current branch.
*/
static const struct name_decoration *current_pointed_by_HEAD(const struct name_decoration *decoration)
{
const struct name_decoration *list, *head = NULL;
const char *branch_name = NULL;
int rru_flags;
/* First find HEAD */
for (list = decoration; list; list = list->next)
if (list->type == DECORATION_REF_HEAD) {
head = list;
break;
}
if (!head)
return NULL;
/* Now resolve and find the matching current branch */
branch_name = refs_resolve_ref_unsafe(get_main_ref_store(the_repository),
"HEAD", 0, NULL, &rru_flags);
if (!branch_name || !(rru_flags & REF_ISSYMREF))
return NULL;
if (!starts_with(branch_name, "refs/"))
return NULL;
/* OK, do we have that ref in the list? */
for (list = decoration; list; list = list->next)
if ((list->type == DECORATION_REF_LOCAL) &&
!strcmp(branch_name, list->name)) {
return list;
}
return NULL;
}
static void show_name(struct strbuf *sb, const struct name_decoration *decoration)
{
if (decoration_flags == DECORATE_SHORT_REFS)
strbuf_addstr(sb, prettify_refname(decoration->name));
else
strbuf_addstr(sb, decoration->name);
}
/*
* The caller makes sure there is no funny color before calling.
* format_decorations ensures the same after return.
*/
void format_decorations(struct strbuf *sb,
const struct commit *commit,
int use_color,
const struct decoration_options *opts)
{
const struct name_decoration *decoration;
const struct name_decoration *current_and_HEAD;
const char *color_commit, *color_reset;
const char *prefix = " (";
const char *suffix = ")";
const char *separator = ", ";
const char *pointer = " -> ";
const char *tag = "tag: ";
decoration = get_name_decoration(&commit->object);
if (!decoration)
return;
if (opts) {
if (opts->prefix)
prefix = opts->prefix;
if (opts->suffix)
suffix = opts->suffix;
if (opts->separator)
separator = opts->separator;
if (opts->pointer)
pointer = opts->pointer;
if (opts->tag)
tag = opts->tag;
}
color_commit = diff_get_color(use_color, DIFF_COMMIT);
color_reset = decorate_get_color(use_color, DECORATION_NONE);
current_and_HEAD = current_pointed_by_HEAD(decoration);
while (decoration) {
/*
* When both current and HEAD are there, only
* show HEAD->current where HEAD would have
* appeared, skipping the entry for current.
*/
if (decoration != current_and_HEAD) {
const char *color =
decorate_get_color(use_color, decoration->type);
if (*prefix) {
strbuf_addstr(sb, color_commit);
strbuf_addstr(sb, prefix);
strbuf_addstr(sb, color_reset);
}
if (*tag && decoration->type == DECORATION_REF_TAG) {
strbuf_addstr(sb, color);
strbuf_addstr(sb, tag);
strbuf_addstr(sb, color_reset);
}
strbuf_addstr(sb, color);
show_name(sb, decoration);
strbuf_addstr(sb, color_reset);
if (current_and_HEAD &&
decoration->type == DECORATION_REF_HEAD) {
strbuf_addstr(sb, color_commit);
strbuf_addstr(sb, pointer);
strbuf_addstr(sb, color_reset);
strbuf_addstr(sb, decorate_get_color(use_color, current_and_HEAD->type));
show_name(sb, current_and_HEAD);
strbuf_addstr(sb, color_reset);
}
prefix = separator;
}
decoration = decoration->next;
}
if (*suffix) {
strbuf_addstr(sb, color_commit);
strbuf_addstr(sb, suffix);
strbuf_addstr(sb, color_reset);
}
}
void show_decorations(struct rev_info *opt, struct commit *commit)
{
struct strbuf sb = STRBUF_INIT;
if (opt->sources) {
char **slot = revision_sources_peek(opt->sources, commit);
if (slot && *slot)
fprintf(opt->diffopt.file, "\t%s", *slot);
}
if (!opt->show_decorations)
return;
format_decorations(&sb, commit, opt->diffopt.use_color, NULL);
fputs(sb.buf, opt->diffopt.file);
strbuf_release(&sb);
}
void fmt_output_subject(struct strbuf *filename,
const char *subject,
struct rev_info *info)
{
const char *suffix = info->patch_suffix;
int nr = info->nr;
int start_len = filename->len;
int max_len = start_len + info->patch_name_max - (strlen(suffix) + 1);
if (info->reroll_count) {
struct strbuf temp = STRBUF_INIT;
strbuf_addf(&temp, "v%s", info->reroll_count);
format_sanitized_subject(filename, temp.buf, temp.len);
strbuf_addstr(filename, "-");
strbuf_release(&temp);
}
strbuf_addf(filename, "%04d-%s", nr, subject);
if (max_len < filename->len)
strbuf_setlen(filename, max_len);
strbuf_addstr(filename, suffix);
}
void fmt_output_commit(struct strbuf *filename,
struct commit *commit,
struct rev_info *info)
{
struct pretty_print_context ctx = {0};
struct strbuf subject = STRBUF_INIT;
repo_format_commit_message(the_repository, commit, "%f", &subject,
&ctx);
fmt_output_subject(filename, subject.buf, info);
strbuf_release(&subject);
}
void fmt_output_email_subject(struct strbuf *sb, struct rev_info *opt)
{
if (opt->total > 0) {
strbuf_addf(sb, "Subject: [%s%s%0*d/%d] ",
opt->subject_prefix,
*opt->subject_prefix ? " " : "",
decimal_width(opt->total),
opt->nr, opt->total);
} else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
strbuf_addf(sb, "Subject: [%s] ",
opt->subject_prefix);
} else {
strbuf_addstr(sb, "Subject: ");
}
}
void log_write_email_headers(struct rev_info *opt, struct commit *commit,
char **extra_headers_p,
int *need_8bit_cte_p,
int maybe_multipart)
{
struct strbuf headers = STRBUF_INIT;
const char *name = oid_to_hex(opt->zero_commit ?
null_oid() : &commit->object.oid);
*need_8bit_cte_p = 0; /* unknown */
if (opt->extra_headers && *opt->extra_headers)
strbuf_addstr(&headers, opt->extra_headers);
fprintf(opt->diffopt.file, "From %s Mon Sep 17 00:00:00 2001\n", name);
graph_show_oneline(opt->graph);
if (opt->message_id) {
fprintf(opt->diffopt.file, "Message-ID: <%s>\n", opt->message_id);
graph_show_oneline(opt->graph);
}
if (opt->ref_message_ids && opt->ref_message_ids->nr > 0) {
int i, n;
n = opt->ref_message_ids->nr;
fprintf(opt->diffopt.file, "In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string);
for (i = 0; i < n; i++)
fprintf(opt->diffopt.file, "%s<%s>\n", (i > 0 ? "\t" : "References: "),
opt->ref_message_ids->items[i].string);
graph_show_oneline(opt->graph);
}
if (opt->mime_boundary && maybe_multipart) {
static struct strbuf buffer = STRBUF_INIT;
struct strbuf filename = STRBUF_INIT;
*need_8bit_cte_p = -1; /* NEVER */
strbuf_reset(&buffer);
strbuf_addf(&headers,
"MIME-Version: 1.0\n"
"Content-Type: multipart/mixed;"
" boundary=\"%s%s\"\n"
"\n"
"This is a multi-part message in MIME "
"format.\n"
"--%s%s\n"
"Content-Type: text/plain; "
"charset=UTF-8; format=fixed\n"
"Content-Transfer-Encoding: 8bit\n\n",
mime_boundary_leader, opt->mime_boundary,
mime_boundary_leader, opt->mime_boundary);
if (opt->numbered_files)
strbuf_addf(&filename, "%d", opt->nr);
else
fmt_output_commit(&filename, commit, opt);
strbuf_addf(&buffer,
"\n--%s%s\n"
"Content-Type: text/x-patch;"
" name=\"%s\"\n"
"Content-Transfer-Encoding: 8bit\n"
"Content-Disposition: %s;"
" filename=\"%s\"\n\n",
mime_boundary_leader, opt->mime_boundary,
filename.buf,
opt->no_inline ? "attachment" : "inline",
filename.buf);
opt->diffopt.stat_sep = buffer.buf;
strbuf_release(&filename);
}
*extra_headers_p = headers.len ? strbuf_detach(&headers, NULL) : NULL;
}
static void show_sig_lines(struct rev_info *opt, int status, const char *bol)
{
const char *color, *reset, *eol;
color = diff_get_color_opt(&opt->diffopt,
status ? DIFF_WHITESPACE : DIFF_FRAGINFO);
reset = diff_get_color_opt(&opt->diffopt, DIFF_RESET);
while (*bol) {
eol = strchrnul(bol, '\n');
fprintf(opt->diffopt.file, "%s%.*s%s%s", color, (int)(eol - bol), bol, reset,
*eol ? "\n" : "");
graph_show_oneline(opt->graph);
bol = (*eol) ? (eol + 1) : eol;
}
}
static void show_signature(struct rev_info *opt, struct commit *commit)
{
struct strbuf payload = STRBUF_INIT;
struct strbuf signature = STRBUF_INIT;
struct signature_check sigc = { 0 };
int status;
if (parse_signed_commit(commit, &payload, &signature, the_hash_algo) <= 0)
goto out;
sigc.payload_type = SIGNATURE_PAYLOAD_COMMIT;
sigc.payload = strbuf_detach(&payload, &sigc.payload_len);
status = check_signature(&sigc, signature.buf, signature.len);
if (status && !sigc.output)
show_sig_lines(opt, status, "No signature\n");
else
show_sig_lines(opt, status, sigc.output);
signature_check_clear(&sigc);
out:
strbuf_release(&payload);
strbuf_release(&signature);
}
static int which_parent(const struct object_id *oid, const struct commit *commit)
{
int nth;
const struct commit_list *parent;
for (nth = 0, parent = commit->parents; parent; parent = parent->next) {
if (oideq(&parent->item->object.oid, oid))
return nth;
nth++;
}
return -1;
}
static int is_common_merge(const struct commit *commit)
{
return (commit->parents
&& commit->parents->next
&& !commit->parents->next->next);
}
static int show_one_mergetag(struct commit *commit,
struct commit_extra_header *extra,
void *data)
{
struct rev_info *opt = (struct rev_info *)data;
struct object_id oid;
struct tag *tag;
struct strbuf verify_message;
struct signature_check sigc = { 0 };
int status, nth;
struct strbuf payload = STRBUF_INIT;
struct strbuf signature = STRBUF_INIT;
hash_object_file(the_hash_algo, extra->value, extra->len,
OBJ_TAG, &oid);
tag = lookup_tag(the_repository, &oid);
if (!tag)
return -1; /* error message already given */
strbuf_init(&verify_message, 256);
if (parse_tag_buffer(the_repository, tag, extra->value, extra->len))
strbuf_addstr(&verify_message, "malformed mergetag\n");
else if (is_common_merge(commit) &&
oideq(&tag->tagged->oid,
&commit->parents->next->item->object.oid))
strbuf_addf(&verify_message,
"merged tag '%s'\n", tag->tag);
else if ((nth = which_parent(&tag->tagged->oid, commit)) < 0)
strbuf_addf(&verify_message, "tag %s names a non-parent %s\n",
tag->tag, oid_to_hex(&tag->tagged->oid));
else
strbuf_addf(&verify_message,
"parent #%d, tagged '%s'\n", nth + 1, tag->tag);
status = -1;
if (parse_signature(extra->value, extra->len, &payload, &signature)) {
/* could have a good signature */
sigc.payload_type = SIGNATURE_PAYLOAD_TAG;
sigc.payload = strbuf_detach(&payload, &sigc.payload_len);
status = check_signature(&sigc, signature.buf, signature.len);
if (sigc.output)
strbuf_addstr(&verify_message, sigc.output);
else
strbuf_addstr(&verify_message, "No signature\n");
signature_check_clear(&sigc);
/* otherwise we couldn't verify, which is shown as bad */
}
show_sig_lines(opt, status, verify_message.buf);
strbuf_release(&verify_message);
strbuf_release(&payload);
strbuf_release(&signature);
return 0;
}
static int show_mergetag(struct rev_info *opt, struct commit *commit)
{
return for_each_mergetag(show_one_mergetag, commit, opt);
}
static void next_commentary_block(struct rev_info *opt, struct strbuf *sb)
{
const char *x = opt->shown_dashes ? "\n" : "---\n";
if (sb)
strbuf_addstr(sb, x);
else
fputs(x, opt->diffopt.file);
opt->shown_dashes = 1;
}
static void show_diff_of_diff(struct rev_info *opt)
{
if (!cmit_fmt_is_mail(opt->commit_format))
return;
if (opt->idiff_oid1) {
struct diff_queue_struct dq;
memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));
DIFF_QUEUE_CLEAR(&diff_queued_diff);
fprintf_ln(opt->diffopt.file, "\n%s", opt->idiff_title);
show_interdiff(opt->idiff_oid1, opt->idiff_oid2, 2,
&opt->diffopt);
memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));
}
if (opt->rdiff1) {
struct diff_queue_struct dq;
struct diff_options opts;
struct range_diff_options range_diff_opts = {
.creation_factor = opt->creation_factor,
.dual_color = 1,
.diffopt = &opts
};
memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));
DIFF_QUEUE_CLEAR(&diff_queued_diff);
fprintf_ln(opt->diffopt.file, "\n%s", opt->rdiff_title);
/*
* Pass minimum required diff-options to range-diff; others
* can be added later if deemed desirable.
*/
repo_diff_setup(the_repository, &opts);
opts.file = opt->diffopt.file;
opts.use_color = opt->diffopt.use_color;
diff_setup_done(&opts);
show_range_diff(opt->rdiff1, opt->rdiff2, &range_diff_opts);
memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));
}
}
void show_log(struct rev_info *opt)
{
struct strbuf msgbuf = STRBUF_INIT;
struct log_info *log = opt->loginfo;
struct commit *commit = log->commit, *parent = log->parent;
int abbrev_commit = opt->abbrev_commit ? opt->abbrev : the_hash_algo->hexsz;
struct pretty_print_context ctx = {0};
opt->loginfo = NULL;
if (!opt->verbose_header) {
graph_show_commit(opt->graph);
if (!opt->graph)
put_revision_mark(opt, commit);
fputs(repo_find_unique_abbrev(the_repository, &commit->object.oid, abbrev_commit),
opt->diffopt.file);
if (opt->print_parents)
show_parents(commit, abbrev_commit, opt->diffopt.file);
if (opt->children.name)
show_children(opt, commit, abbrev_commit);
show_decorations(opt, commit);
if (opt->graph && !graph_is_commit_finished(opt->graph)) {
putc('\n', opt->diffopt.file);
graph_show_remainder(opt->graph);
}
putc(opt->diffopt.line_termination, opt->diffopt.file);
return;
}
/*
* If use_terminator is set, we already handled any record termination
* at the end of the last record.
* Otherwise, add a diffopt.line_termination character before all
* entries but the first. (IOW, as a separator between entries)
*/
if (opt->shown_one && !opt->use_terminator) {
/*
* If entries are separated by a newline, the output
* should look human-readable. If the last entry ended
* with a newline, print the graph output before this
* newline. Otherwise it will end up as a completely blank
* line and will look like a gap in the graph.
*
* If the entry separator is not a newline, the output is
* primarily intended for programmatic consumption, and we
* never want the extra graph output before the entry
* separator.
*/
if (opt->diffopt.line_termination == '\n' &&
!opt->missing_newline)
graph_show_padding(opt->graph);
putc(opt->diffopt.line_termination, opt->diffopt.file);
}
opt->shown_one = 1;
/*
* If the history graph was requested,
* print the graph, up to this commit's line
*/
graph_show_commit(opt->graph);
/*
* Print header line of header..
*/
if (cmit_fmt_is_mail(opt->commit_format)) {
log_write_email_headers(opt, commit, &ctx.after_subject,
&ctx.need_8bit_cte, 1);
ctx.rev = opt;
} else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), opt->diffopt.file);
if (opt->commit_format != CMIT_FMT_ONELINE)
fputs("commit ", opt->diffopt.file);
if (!opt->graph)
put_revision_mark(opt, commit);
fputs(repo_find_unique_abbrev(the_repository, &commit->object.oid,
abbrev_commit),
opt->diffopt.file);
if (opt->print_parents)
show_parents(commit, abbrev_commit, opt->diffopt.file);
if (opt->children.name)
show_children(opt, commit, abbrev_commit);
if (parent)
fprintf(opt->diffopt.file, " (from %s)",
repo_find_unique_abbrev(the_repository, &parent->object.oid, abbrev_commit));
fputs(diff_get_color_opt(&opt->diffopt, DIFF_RESET), opt->diffopt.file);
show_decorations(opt, commit);
if (opt->commit_format == CMIT_FMT_ONELINE) {
putc(' ', opt->diffopt.file);
} else {
putc('\n', opt->diffopt.file);
graph_show_oneline(opt->graph);
}
if (opt->reflog_info) {
/*
* setup_revisions() ensures that opt->reflog_info
* and opt->graph cannot both be set,
* so we don't need to worry about printing the
* graph info here.
*/
show_reflog_message(opt->reflog_info,
opt->commit_format == CMIT_FMT_ONELINE,
opt->date_mode,
opt->date_mode_explicit);
if (opt->commit_format == CMIT_FMT_ONELINE)
return;
}
}
if (opt->show_signature) {
show_signature(opt, commit);
show_mergetag(opt, commit);
}
if (opt->show_notes) {
int raw;
struct strbuf notebuf = STRBUF_INIT;
raw = (opt->commit_format == CMIT_FMT_USERFORMAT);
format_display_notes(&commit->object.oid, &notebuf,
get_log_output_encoding(), raw);
ctx.notes_message = strbuf_detach(&notebuf, NULL);
}
/*
* And then the pretty-printed message itself
*/
if (ctx.need_8bit_cte >= 0 && opt->add_signoff)
ctx.need_8bit_cte =
has_non_ascii(fmt_name(WANT_COMMITTER_IDENT));
ctx.date_mode = opt->date_mode;
ctx.date_mode_explicit = opt->date_mode_explicit;
ctx.abbrev = opt->diffopt.abbrev;
ctx.preserve_subject = opt->preserve_subject;
ctx.encode_email_headers = opt->encode_email_headers;
ctx.reflog_info = opt->reflog_info;
ctx.fmt = opt->commit_format;
ctx.mailmap = opt->mailmap;
ctx.color = opt->diffopt.use_color;
ctx.expand_tabs_in_log = opt->expand_tabs_in_log;
ctx.output_encoding = get_log_output_encoding();
ctx.rev = opt;
if (opt->from_ident.mail_begin && opt->from_ident.name_begin)
ctx.from_ident = &opt->from_ident;
if (opt->graph)
ctx.graph_width = graph_width(opt->graph);
pretty_print_commit(&ctx, commit, &msgbuf);
if (opt->add_signoff)
append_signoff(&msgbuf, 0, APPEND_SIGNOFF_DEDUP);
if ((ctx.fmt != CMIT_FMT_USERFORMAT) &&
ctx.notes_message && *ctx.notes_message) {
if (cmit_fmt_is_mail(ctx.fmt))
next_commentary_block(opt, &msgbuf);
strbuf_addstr(&msgbuf, ctx.notes_message);
}
if (opt->show_log_size) {
fprintf(opt->diffopt.file, "log size %i\n", (int)msgbuf.len);
graph_show_oneline(opt->graph);
}
/*
* Set opt->missing_newline if msgbuf doesn't
* end in a newline (including if it is empty)
*/
if (!msgbuf.len || msgbuf.buf[msgbuf.len - 1] != '\n')
opt->missing_newline = 1;
else
opt->missing_newline = 0;
graph_show_commit_msg(opt->graph, opt->diffopt.file, &msgbuf);
if (opt->use_terminator && !commit_format_is_empty(opt->commit_format)) {
if (!opt->missing_newline)
graph_show_padding(opt->graph);
putc(opt->diffopt.line_termination, opt->diffopt.file);
}
strbuf_release(&msgbuf);
free(ctx.notes_message);
free(ctx.after_subject);
}
int log_tree_diff_flush(struct rev_info *opt)
{
opt->shown_dashes = 0;
diffcore_std(&opt->diffopt);
if (diff_queue_is_empty(&opt->diffopt)) {
int saved_fmt = opt->diffopt.output_format;
opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
diff_flush(&opt->diffopt);
opt->diffopt.output_format = saved_fmt;
return 0;
}
if (opt->loginfo && !opt->no_commit_id) {
show_log(opt);
if ((opt->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) &&
opt->verbose_header &&
opt->commit_format != CMIT_FMT_ONELINE &&
!commit_format_is_empty(opt->commit_format)) {
/*
* When showing a verbose header (i.e. log message),
* and not in --pretty=oneline format, we would want
* an extra newline between the end of log and the
* diff/diffstat output for readability.
*/
int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
if (opt->diffopt.output_prefix) {
struct strbuf *msg = NULL;
msg = opt->diffopt.output_prefix(&opt->diffopt,
opt->diffopt.output_prefix_data);
fwrite(msg->buf, msg->len, 1, opt->diffopt.file);
}
/*
* We may have shown three-dashes line early
* between generated commentary (notes, etc.)
* and the log message, in which case we only
* want a blank line after the commentary
* without (an extra) three-dashes line.
* Otherwise, we show the three-dashes line if
* we are showing the patch with diffstat, but
* in that case, there is no extra blank line
* after the three-dashes line.
*/
if (!opt->shown_dashes &&
(pch & opt->diffopt.output_format) == pch)
fprintf(opt->diffopt.file, "---");
putc('\n', opt->diffopt.file);
}
}
diff_flush(&opt->diffopt);
return 1;
}
static int do_diff_combined(struct rev_info *opt, struct commit *commit)
{
diff_tree_combined_merge(commit, opt);
return !opt->loginfo;
}
static void setup_additional_headers(struct diff_options *o,
struct strmap *all_headers)
{
struct hashmap_iter iter;
struct strmap_entry *entry;
/*
* Make o->additional_path_headers contain the subset of all_headers
* that match o->pathspec. If there aren't any that match o->pathspec,
* then make o->additional_path_headers be NULL.
*/
if (!o->pathspec.nr) {
o->additional_path_headers = all_headers;
return;
}
o->additional_path_headers = xmalloc(sizeof(struct strmap));
strmap_init_with_options(o->additional_path_headers, NULL, 0);
strmap_for_each_entry(all_headers, &iter, entry) {
if (match_pathspec(the_repository->index, &o->pathspec,
entry->key, strlen(entry->key),
0 /* prefix */, NULL /* seen */,
0 /* is_dir */))
strmap_put(o->additional_path_headers,
entry->key, entry->value);
}
if (!strmap_get_size(o->additional_path_headers)) {
strmap_clear(o->additional_path_headers, 0);
FREE_AND_NULL(o->additional_path_headers);
}
}
static void cleanup_additional_headers(struct diff_options *o)
{
if (!o->pathspec.nr) {
o->additional_path_headers = NULL;
return;
}
if (!o->additional_path_headers)
return;
strmap_clear(o->additional_path_headers, 0);
FREE_AND_NULL(o->additional_path_headers);
}
static int do_remerge_diff(struct rev_info *opt,
struct commit_list *parents,
struct object_id *oid)
{
struct merge_options o;
struct commit_list *bases = NULL;
struct merge_result res = {0};
struct pretty_print_context ctx = {0};
struct commit *parent1 = parents->item;
struct commit *parent2 = parents->next->item;
struct strbuf parent1_desc = STRBUF_INIT;
struct strbuf parent2_desc = STRBUF_INIT;
/* Setup merge options */
init_ui_merge_options(&o, the_repository);
o.show_rename_progress = 0;
o.record_conflict_msgs_as_headers = 1;
o.msg_header_prefix = "remerge";
ctx.abbrev = DEFAULT_ABBREV;
repo_format_commit_message(the_repository, parent1, "%h (%s)",
&parent1_desc, &ctx);
repo_format_commit_message(the_repository, parent2, "%h (%s)",
&parent2_desc, &ctx);
o.branch1 = parent1_desc.buf;
o.branch2 = parent2_desc.buf;
/* Parse the relevant commits and get the merge bases */
parse_commit_or_die(parent1);
parse_commit_or_die(parent2);
if (repo_get_merge_bases(the_repository, parent1, parent2, &bases) < 0)
exit(128);
/* Re-merge the parents */
merge_incore_recursive(&o, bases, parent1, parent2, &res);
/* Show the diff */
setup_additional_headers(&opt->diffopt, res.path_messages);
diff_tree_oid(&res.tree->object.oid, oid, "", &opt->diffopt);
log_tree_diff_flush(opt);
/* Cleanup */
free_commit_list(bases);
cleanup_additional_headers(&opt->diffopt);
strbuf_release(&parent1_desc);
strbuf_release(&parent2_desc);
merge_finalize(&o, &res);
/* Clean up the contents of the temporary object directory */
if (opt->remerge_objdir)
tmp_objdir_discard_objects(opt->remerge_objdir);
else
BUG("did a remerge diff without remerge_objdir?!?");
return !opt->loginfo;
}
/*
* Show the diff of a commit.
*
* Return true if we printed any log info messages
*/
static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log_info *log)
{
int showed_log;
struct commit_list *parents;
struct object_id *oid;
int is_merge;
int all_need_diff = opt->diff || opt->diffopt.flags.exit_with_status;
if (!all_need_diff && !opt->merges_need_diff)
return 0;
parse_commit_or_die(commit);
oid = get_commit_tree_oid(commit);
parents = get_saved_parents(opt, commit);
is_merge = parents && parents->next;
if (!is_merge && !all_need_diff)
return 0;
/* Root commit? */
if (!parents) {
if (opt->show_root_diff) {
diff_root_tree_oid(oid, "", &opt->diffopt);
log_tree_diff_flush(opt);
}
return !opt->loginfo;
}
if (is_merge) {
int octopus = (parents->next->next != NULL);
if (opt->remerge_diff) {
if (octopus) {
show_log(opt);
fprintf(opt->diffopt.file,
"diff: warning: Skipping remerge-diff "
"for octopus merges.\n");
return 1;
}
return do_remerge_diff(opt, parents, oid);
}
if (opt->combine_merges)
return do_diff_combined(opt, commit);
if (opt->separate_merges) {
if (!opt->first_parent_merges) {
/* Show parent info for multiple diffs */
log->parent = parents->item;
}
} else
return 0;
}
showed_log = 0;
for (;;) {
struct commit *parent = parents->item;
parse_commit_or_die(parent);
diff_tree_oid(get_commit_tree_oid(parent),
oid, "", &opt->diffopt);
log_tree_diff_flush(opt);
showed_log |= !opt->loginfo;
/* Set up the log info for the next parent, if any.. */
parents = parents->next;
if (!parents || opt->first_parent_merges)
break;
log->parent = parents->item;
opt->loginfo = log;
}
return showed_log;
}
int log_tree_commit(struct rev_info *opt, struct commit *commit)
{
struct log_info log;
int shown;
/* maybe called by e.g. cmd_log_walk(), maybe stand-alone */
int no_free = opt->diffopt.no_free;
log.commit = commit;
log.parent = NULL;
opt->loginfo = &log;
opt->diffopt.no_free = 1;
/* NEEDSWORK: no restoring of no_free? Why? */
if (opt->line_level_traverse)
return line_log_print(opt, commit);
if (opt->track_linear && !opt->linear && !opt->reverse_output_stage)
fprintf(opt->diffopt.file, "\n%s\n", opt->break_bar);
shown = log_tree_diff(opt, commit, &log);
if (!shown && opt->loginfo && opt->always_show_header) {
log.parent = NULL;
show_log(opt);
shown = 1;
}
if (opt->track_linear && !opt->linear && opt->reverse_output_stage)
fprintf(opt->diffopt.file, "\n%s\n", opt->break_bar);
if (shown)
show_diff_of_diff(opt);
opt->loginfo = NULL;
maybe_flush_or_die(opt->diffopt.file, "stdout");
opt->diffopt.no_free = no_free;
diff_free(&opt->diffopt);
return shown;
}
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