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02769437e1
git/log-tree.c
Fabian Stelzer 02769437e1 ssh signing: use sigc struct to pass payload 
To be able to extend the payload metadata with things like its creation
timestamp or the creators ident we remove the payload parameters to
check_signature() and use the already existing sigc->payload field
instead, only adding the length field to the struct. This also allows
us to get rid of the xmemdupz() calls in the verify functions. Since
sigc is now used to input data as well as output the result move it to
the front of the function list.

 - Add payload_length to struct signature_check
 - Populate sigc.payload/payload_len on all call sites
 - Remove payload parameters to check_signature()
 - Remove payload parameters to internal verify_* functions and use sigc
   instead
 - Remove xmemdupz() used for verbose output since payload is now already
   populated.

Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-09 13:38:04 -08:00

1002 lines
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#include "cache.h"
#include "config.h"
#include "diff.h"
#include "object-store.h"
#include "repository.h"
#include "commit.h"
#include "tag.h"
#include "graph.h"
#include "log-tree.h"
#include "reflog-walk.h"
#include "refs.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"
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 == NULL) {
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 struct object_id *oid,
int flags, void *cb_data)
{
struct object *obj;
enum object_type objtype;
enum decoration_type deco_type = DECORATION_NONE;
struct decoration_filter *filter = (struct decoration_filter *)cb_data;
if (filter && !ref_filter_match(refname, filter))
return 0;
if (starts_with(refname, git_replace_ref_base)) {
struct object_id original_oid;
if (!read_replace_refs)
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);
if (starts_with(refname, "refs/heads/"))
deco_type = DECORATION_REF_LOCAL;
else if (starts_with(refname, "refs/remotes/"))
deco_type = DECORATION_REF_REMOTE;
else if (starts_with(refname, "refs/tags/"))
deco_type = DECORATION_REF_TAG;
else if (!strcmp(refname, "refs/stash"))
deco_type = DECORATION_REF_STASH;
else if (!strcmp(refname, "HEAD"))
deco_type = DECORATION_REF_HEAD;
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)
{
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;
for_each_ref(add_ref_decoration, filter);
head_ref(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", find_unique_abbrev(&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", find_unique_abbrev(&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 = resolve_ref_unsafe("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_extended makes sure the same after return.
*/
void format_decorations_extended(struct strbuf *sb,
const struct commit *commit,
int use_color,
const char *prefix,
const char *separator,
const char *suffix)
{
const struct name_decoration *decoration;
const struct name_decoration *current_and_HEAD;
const char *color_commit =
diff_get_color(use_color, DIFF_COMMIT);
const char *color_reset =
decorate_get_color(use_color, DECORATION_NONE);
decoration = get_name_decoration(&commit->object);
if (!decoration)
return;
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) {
strbuf_addstr(sb, color_commit);
strbuf_addstr(sb, prefix);
strbuf_addstr(sb, color_reset);
strbuf_addstr(sb, decorate_get_color(use_color, decoration->type));
if (decoration->type == DECORATION_REF_TAG)
strbuf_addstr(sb, "tag: ");
show_name(sb, decoration);
if (current_and_HEAD &&
decoration->type == DECORATION_REF_HEAD) {
strbuf_addstr(sb, " -> ");
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;
}
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);
fputs(sb.buf, opt->diffopt.file);
strbuf_release(&sb);
}
static unsigned int digits_in_number(unsigned int number)
{
unsigned int i = 10, result = 1;
while (i <= number) {
i *= 10;
result++;
}
return result;
}
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;
format_commit_message(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 ? " " : "",
digits_in_number(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,
const char **extra_headers_p,
int *need_8bit_cte_p,
int maybe_multipart)
{
const char *extra_headers = opt->extra_headers;
const char *name = oid_to_hex(opt->zero_commit ?
null_oid() : &commit->object.oid);
*need_8bit_cte_p = 0; /* unknown */
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 subject_buffer = STRBUF_INIT;
static struct strbuf buffer = STRBUF_INIT;
struct strbuf filename = STRBUF_INIT;
*need_8bit_cte_p = -1; /* NEVER */
strbuf_reset(&subject_buffer);
strbuf_reset(&buffer);
strbuf_addf(&subject_buffer,
"%s"
"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",
extra_headers ? extra_headers : "",
mime_boundary_leader, opt->mime_boundary,
mime_boundary_leader, opt->mime_boundary);
extra_headers = subject_buffer.buf;
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 = extra_headers;
}
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 = 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,
type_name(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 = 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;
}
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;
const char *extra_headers = opt->extra_headers;
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(find_unique_abbrev(&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, &extra_headers,
&ctx.need_8bit_cte, 1);
ctx.rev = opt;
ctx.print_email_subject = 1;
} 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(find_unique_abbrev(&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)",
find_unique_abbrev(&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.after_subject = extra_headers;
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);
if (cmit_fmt_is_mail(ctx.fmt) && opt->idiff_oid1) {
struct diff_queue_struct dq;
memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));
DIFF_QUEUE_CLEAR(&diff_queued_diff);
next_commentary_block(opt, NULL);
fprintf_ln(opt->diffopt.file, "%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 (cmit_fmt_is_mail(ctx.fmt) && 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);
next_commentary_block(opt, NULL);
fprintf_ln(opt->diffopt.file, "%s", opt->rdiff_title);
/*
* Pass minimum required diff-options to range-diff; others
* can be added later if deemed desirable.
*/
diff_setup(&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));
}
}
int log_tree_diff_flush(struct rev_info *opt)
{
opt->shown_dashes = 0;
diffcore_std(&opt->diffopt);
if (diff_queue_is_empty()) {
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;
}
/*
* 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) {
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;
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);
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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