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git/pretty.c
Andy Koppe f1f8a25856 pretty: add pointer and tag options to %(decorate) 
Add pointer and tag options to %(decorate) format, to allow to override
the " -> " string used to show where HEAD points and the "tag: " string
used to mark tags.

Document in pretty-formats.txt and test in t4205-log-pretty-formats.sh.

Signed-off-by: Andy Koppe <andy.koppe@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-08-21 11:40:10 -07:00

2356 lines
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C
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#include "git-compat-util.h"
#include "config.h"
#include "commit.h"
#include "environment.h"
#include "gettext.h"
#include "hash.h"
#include "hex.h"
#include "utf8.h"
#include "diff.h"
#include "pager.h"
#include "revision.h"
#include "string-list.h"
#include "mailmap.h"
#include "log-tree.h"
#include "notes.h"
#include "color.h"
#include "reflog-walk.h"
#include "gpg-interface.h"
#include "trailer.h"
#include "run-command.h"
#include "object-name.h"
/*
* The limit for formatting directives, which enable the caller to append
* arbitrarily many bytes to the formatted buffer. This includes padding
* and wrapping formatters.
*/
#define FORMATTING_LIMIT (16 * 1024)
static char *user_format;
static struct cmt_fmt_map {
const char *name;
enum cmit_fmt format;
int is_tformat;
int expand_tabs_in_log;
int is_alias;
enum date_mode_type default_date_mode_type;
const char *user_format;
} *commit_formats;
static size_t builtin_formats_len;
static size_t commit_formats_len;
static size_t commit_formats_alloc;
static struct cmt_fmt_map *find_commit_format(const char *sought);
int commit_format_is_empty(enum cmit_fmt fmt)
{
return fmt == CMIT_FMT_USERFORMAT && !*user_format;
}
static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
{
free(user_format);
user_format = xstrdup(cp);
if (is_tformat)
rev->use_terminator = 1;
rev->commit_format = CMIT_FMT_USERFORMAT;
}
static int git_pretty_formats_config(const char *var, const char *value,
const struct config_context *ctx UNUSED,
void *cb UNUSED)
{
struct cmt_fmt_map *commit_format = NULL;
const char *name;
const char *fmt;
int i;
if (!skip_prefix(var, "pretty.", &name))
return 0;
for (i = 0; i < builtin_formats_len; i++) {
if (!strcmp(commit_formats[i].name, name))
return 0;
}
for (i = builtin_formats_len; i < commit_formats_len; i++) {
if (!strcmp(commit_formats[i].name, name)) {
commit_format = &commit_formats[i];
break;
}
}
if (!commit_format) {
ALLOC_GROW(commit_formats, commit_formats_len+1,
commit_formats_alloc);
commit_format = &commit_formats[commit_formats_len];
memset(commit_format, 0, sizeof(*commit_format));
commit_formats_len++;
}
commit_format->name = xstrdup(name);
commit_format->format = CMIT_FMT_USERFORMAT;
if (git_config_string(&fmt, var, value))
return -1;
if (skip_prefix(fmt, "format:", &fmt))
commit_format->is_tformat = 0;
else if (skip_prefix(fmt, "tformat:", &fmt) || strchr(fmt, '%'))
commit_format->is_tformat = 1;
else
commit_format->is_alias = 1;
commit_format->user_format = fmt;
return 0;
}
static void setup_commit_formats(void)
{
struct cmt_fmt_map builtin_formats[] = {
{ "raw", CMIT_FMT_RAW, 0, 0 },
{ "medium", CMIT_FMT_MEDIUM, 0, 8 },
{ "short", CMIT_FMT_SHORT, 0, 0 },
{ "email", CMIT_FMT_EMAIL, 0, 0 },
{ "mboxrd", CMIT_FMT_MBOXRD, 0, 0 },
{ "fuller", CMIT_FMT_FULLER, 0, 8 },
{ "full", CMIT_FMT_FULL, 0, 8 },
{ "oneline", CMIT_FMT_ONELINE, 1, 0 },
{ "reference", CMIT_FMT_USERFORMAT, 1, 0,
0, DATE_SHORT, "%C(auto)%h (%s, %ad)" },
/*
* Please update $__git_log_pretty_formats in
* git-completion.bash when you add new formats.
*/
};
commit_formats_len = ARRAY_SIZE(builtin_formats);
builtin_formats_len = commit_formats_len;
ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
COPY_ARRAY(commit_formats, builtin_formats,
ARRAY_SIZE(builtin_formats));
git_config(git_pretty_formats_config, NULL);
}
static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
const char *original,
int num_redirections)
{
struct cmt_fmt_map *found = NULL;
size_t found_match_len = 0;
int i;
if (num_redirections >= commit_formats_len)
die("invalid --pretty format: "
"'%s' references an alias which points to itself",
original);
for (i = 0; i < commit_formats_len; i++) {
size_t match_len;
if (!starts_with(commit_formats[i].name, sought))
continue;
match_len = strlen(commit_formats[i].name);
if (found == NULL || found_match_len > match_len) {
found = &commit_formats[i];
found_match_len = match_len;
}
}
if (found && found->is_alias) {
found = find_commit_format_recursive(found->user_format,
original,
num_redirections+1);
}
return found;
}
static struct cmt_fmt_map *find_commit_format(const char *sought)
{
if (!commit_formats)
setup_commit_formats();
return find_commit_format_recursive(sought, sought, 0);
}
void get_commit_format(const char *arg, struct rev_info *rev)
{
struct cmt_fmt_map *commit_format;
rev->use_terminator = 0;
if (!arg) {
rev->commit_format = CMIT_FMT_DEFAULT;
return;
}
if (skip_prefix(arg, "format:", &arg)) {
save_user_format(rev, arg, 0);
return;
}
if (!*arg || skip_prefix(arg, "tformat:", &arg) || strchr(arg, '%')) {
save_user_format(rev, arg, 1);
return;
}
commit_format = find_commit_format(arg);
if (!commit_format)
die("invalid --pretty format: %s", arg);
rev->commit_format = commit_format->format;
rev->use_terminator = commit_format->is_tformat;
rev->expand_tabs_in_log_default = commit_format->expand_tabs_in_log;
if (!rev->date_mode_explicit && commit_format->default_date_mode_type)
rev->date_mode.type = commit_format->default_date_mode_type;
if (commit_format->format == CMIT_FMT_USERFORMAT) {
save_user_format(rev, commit_format->user_format,
commit_format->is_tformat);
}
}
/*
* Generic support for pretty-printing the header
*/
static int get_one_line(const char *msg)
{
int ret = 0;
for (;;) {
char c = *msg++;
if (!c)
break;
ret++;
if (c == '\n')
break;
}
return ret;
}
/* High bit set, or ISO-2022-INT */
static int non_ascii(int ch)
{
return !isascii(ch) || ch == '\033';
}
int has_non_ascii(const char *s)
{
int ch;
if (!s)
return 0;
while ((ch = *s++) != '\0') {
if (non_ascii(ch))
return 1;
}
return 0;
}
static int is_rfc822_special(char ch)
{
switch (ch) {
case '(':
case ')':
case '<':
case '>':
case '[':
case ']':
case ':':
case ';':
case '@':
case ',':
case '.':
case '"':
case '\\':
return 1;
default:
return 0;
}
}
static int needs_rfc822_quoting(const char *s, int len)
{
int i;
for (i = 0; i < len; i++)
if (is_rfc822_special(s[i]))
return 1;
return 0;
}
static int last_line_length(struct strbuf *sb)
{
int i;
/* How many bytes are already used on the last line? */
for (i = sb->len - 1; i >= 0; i--)
if (sb->buf[i] == '\n')
break;
return sb->len - (i + 1);
}
static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
{
int i;
/* just a guess, we may have to also backslash-quote */
strbuf_grow(out, len + 2);
strbuf_addch(out, '"');
for (i = 0; i < len; i++) {
switch (s[i]) {
case '"':
case '\\':
strbuf_addch(out, '\\');
/* fall through */
default:
strbuf_addch(out, s[i]);
}
}
strbuf_addch(out, '"');
}
enum rfc2047_type {
RFC2047_SUBJECT,
RFC2047_ADDRESS
};
static int is_rfc2047_special(char ch, enum rfc2047_type type)
{
/*
* rfc2047, section 4.2:
*
* 8-bit values which correspond to printable ASCII characters other
* than "=", "?", and "_" (underscore), MAY be represented as those
* characters. (But see section 5 for restrictions.) In
* particular, SPACE and TAB MUST NOT be represented as themselves
* within encoded words.
*/
/*
* rule out non-ASCII characters and non-printable characters (the
* non-ASCII check should be redundant as isprint() is not localized
* and only knows about ASCII, but be defensive about that)
*/
if (non_ascii(ch) || !isprint(ch))
return 1;
/*
* rule out special printable characters (' ' should be the only
* whitespace character considered printable, but be defensive and use
* isspace())
*/
if (isspace(ch) || ch == '=' || ch == '?' || ch == '_')
return 1;
/*
* rfc2047, section 5.3:
*
* As a replacement for a 'word' entity within a 'phrase', for example,
* one that precedes an address in a From, To, or Cc header. The ABNF
* definition for 'phrase' from RFC 822 thus becomes:
*
* phrase = 1*( encoded-word / word )
*
* In this case the set of characters that may be used in a "Q"-encoded
* 'encoded-word' is restricted to: <upper and lower case ASCII
* letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
* (underscore, ASCII 95.)>. An 'encoded-word' that appears within a
* 'phrase' MUST be separated from any adjacent 'word', 'text' or
* 'special' by 'linear-white-space'.
*/
if (type != RFC2047_ADDRESS)
return 0;
/* '=' and '_' are special cases and have been checked above */
return !(isalnum(ch) || ch == '!' || ch == '*' || ch == '+' || ch == '-' || ch == '/');
}
static int needs_rfc2047_encoding(const char *line, int len)
{
int i;
for (i = 0; i < len; i++) {
int ch = line[i];
if (non_ascii(ch) || ch == '\n')
return 1;
if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
return 1;
}
return 0;
}
static void add_rfc2047(struct strbuf *sb, const char *line, size_t len,
const char *encoding, enum rfc2047_type type)
{
static const int max_encoded_length = 76; /* per rfc2047 */
int i;
int line_len = last_line_length(sb);
strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
strbuf_addf(sb, "=?%s?q?", encoding);
line_len += strlen(encoding) + 5; /* 5 for =??q? */
while (len) {
/*
* RFC 2047, section 5 (3):
*
* Each 'encoded-word' MUST represent an integral number of
* characters. A multi-octet character may not be split across
* adjacent 'encoded- word's.
*/
const unsigned char *p = (const unsigned char *)line;
int chrlen = mbs_chrlen(&line, &len, encoding);
int is_special = (chrlen > 1) || is_rfc2047_special(*p, type);
/* "=%02X" * chrlen, or the byte itself */
const char *encoded_fmt = is_special ? "=%02X" : "%c";
int encoded_len = is_special ? 3 * chrlen : 1;
/*
* According to RFC 2047, we could encode the special character
* ' ' (space) with '_' (underscore) for readability. But many
* programs do not understand this and just leave the
* underscore in place. Thus, we do nothing special here, which
* causes ' ' to be encoded as '=20', avoiding this problem.
*/
if (line_len + encoded_len + 2 > max_encoded_length) {
/* It won't fit with trailing "?=" --- break the line */
strbuf_addf(sb, "?=\n =?%s?q?", encoding);
line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
}
for (i = 0; i < chrlen; i++)
strbuf_addf(sb, encoded_fmt, p[i]);
line_len += encoded_len;
}
strbuf_addstr(sb, "?=");
}
const char *show_ident_date(const struct ident_split *ident,
const struct date_mode *mode)
{
timestamp_t date = 0;
long tz = 0;
if (ident->date_begin && ident->date_end)
date = parse_timestamp(ident->date_begin, NULL, 10);
if (date_overflows(date))
date = 0;
else {
if (ident->tz_begin && ident->tz_end)
tz = strtol(ident->tz_begin, NULL, 10);
if (tz >= INT_MAX || tz <= INT_MIN)
tz = 0;
}
return show_date(date, tz, mode);
}
static inline void strbuf_add_with_color(struct strbuf *sb, const char *color,
const char *buf, size_t buflen)
{
strbuf_addstr(sb, color);
strbuf_add(sb, buf, buflen);
if (*color)
strbuf_addstr(sb, GIT_COLOR_RESET);
}
static void append_line_with_color(struct strbuf *sb, struct grep_opt *opt,
const char *line, size_t linelen,
int color, enum grep_context ctx,
enum grep_header_field field)
{
const char *buf, *eol, *line_color, *match_color;
regmatch_t match;
int eflags = 0;
buf = line;
eol = buf + linelen;
if (!opt || !want_color(color) || opt->invert)
goto end;
line_color = opt->colors[GREP_COLOR_SELECTED];
match_color = opt->colors[GREP_COLOR_MATCH_SELECTED];
while (grep_next_match(opt, buf, eol, ctx, &match, field, eflags)) {
if (match.rm_so == match.rm_eo)
break;
strbuf_add_with_color(sb, line_color, buf, match.rm_so);
strbuf_add_with_color(sb, match_color, buf + match.rm_so,
match.rm_eo - match.rm_so);
buf += match.rm_eo;
eflags = REG_NOTBOL;
}
if (eflags)
strbuf_add_with_color(sb, line_color, buf, eol - buf);
else {
end:
strbuf_add(sb, buf, eol - buf);
}
}
static int use_in_body_from(const struct pretty_print_context *pp,
const struct ident_split *ident)
{
if (pp->rev && pp->rev->force_in_body_from)
return 1;
if (ident_cmp(pp->from_ident, ident))
return 1;
return 0;
}
void pp_user_info(struct pretty_print_context *pp,
const char *what, struct strbuf *sb,
const char *line, const char *encoding)
{
struct ident_split ident;
char *line_end;
const char *mailbuf, *namebuf;
size_t namelen, maillen;
int max_length = 78; /* per rfc2822 */
if (pp->fmt == CMIT_FMT_ONELINE)
return;
line_end = strchrnul(line, '\n');
if (split_ident_line(&ident, line, line_end - line))
return;
mailbuf = ident.mail_begin;
maillen = ident.mail_end - ident.mail_begin;
namebuf = ident.name_begin;
namelen = ident.name_end - ident.name_begin;
if (pp->mailmap)
map_user(pp->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
if (cmit_fmt_is_mail(pp->fmt)) {
if (pp->from_ident && use_in_body_from(pp, &ident)) {
struct strbuf buf = STRBUF_INIT;
strbuf_addstr(&buf, "From: ");
strbuf_add(&buf, namebuf, namelen);
strbuf_addstr(&buf, " <");
strbuf_add(&buf, mailbuf, maillen);
strbuf_addstr(&buf, ">\n");
string_list_append(&pp->in_body_headers,
strbuf_detach(&buf, NULL));
mailbuf = pp->from_ident->mail_begin;
maillen = pp->from_ident->mail_end - mailbuf;
namebuf = pp->from_ident->name_begin;
namelen = pp->from_ident->name_end - namebuf;
}
strbuf_addstr(sb, "From: ");
if (pp->encode_email_headers &&
needs_rfc2047_encoding(namebuf, namelen)) {
add_rfc2047(sb, namebuf, namelen,
encoding, RFC2047_ADDRESS);
max_length = 76; /* per rfc2047 */
} else if (needs_rfc822_quoting(namebuf, namelen)) {
struct strbuf quoted = STRBUF_INIT;
add_rfc822_quoted(&quoted, namebuf, namelen);
strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len,
-6, 1, max_length);
strbuf_release(&quoted);
} else {
strbuf_add_wrapped_bytes(sb, namebuf, namelen,
-6, 1, max_length);
}
if (max_length <
last_line_length(sb) + strlen(" <") + maillen + strlen(">"))
strbuf_addch(sb, '\n');
strbuf_addf(sb, " <%.*s>\n", (int)maillen, mailbuf);
} else {
struct strbuf id = STRBUF_INIT;
enum grep_header_field field = GREP_HEADER_FIELD_MAX;
struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
if (!strcmp(what, "Author"))
field = GREP_HEADER_AUTHOR;
else if (!strcmp(what, "Commit"))
field = GREP_HEADER_COMMITTER;
strbuf_addf(sb, "%s: ", what);
if (pp->fmt == CMIT_FMT_FULLER)
strbuf_addchars(sb, ' ', 4);
strbuf_addf(&id, "%.*s <%.*s>", (int)namelen, namebuf,
(int)maillen, mailbuf);
append_line_with_color(sb, opt, id.buf, id.len, pp->color,
GREP_CONTEXT_HEAD, field);
strbuf_addch(sb, '\n');
strbuf_release(&id);
}
switch (pp->fmt) {
case CMIT_FMT_MEDIUM:
strbuf_addf(sb, "Date: %s\n",
show_ident_date(&ident, &pp->date_mode));
break;
case CMIT_FMT_EMAIL:
case CMIT_FMT_MBOXRD:
strbuf_addf(sb, "Date: %s\n",
show_ident_date(&ident, DATE_MODE(RFC2822)));
break;
case CMIT_FMT_FULLER:
strbuf_addf(sb, "%sDate: %s\n", what,
show_ident_date(&ident, &pp->date_mode));
break;
default:
/* notin' */
break;
}
}
static int is_blank_line(const char *line, int *len_p)
{
int len = *len_p;
while (len && isspace(line[len - 1]))
len--;
*len_p = len;
return !len;
}
const char *skip_blank_lines(const char *msg)
{
for (;;) {
int linelen = get_one_line(msg);
int ll = linelen;
if (!linelen)
break;
if (!is_blank_line(msg, &ll))
break;
msg += linelen;
}
return msg;
}
static void add_merge_info(const struct pretty_print_context *pp,
struct strbuf *sb, const struct commit *commit)
{
struct commit_list *parent = commit->parents;
if ((pp->fmt == CMIT_FMT_ONELINE) || (cmit_fmt_is_mail(pp->fmt)) ||
!parent || !parent->next)
return;
strbuf_addstr(sb, "Merge:");
while (parent) {
struct object_id *oidp = &parent->item->object.oid;
strbuf_addch(sb, ' ');
if (pp->abbrev)
strbuf_add_unique_abbrev(sb, oidp, pp->abbrev);
else
strbuf_addstr(sb, oid_to_hex(oidp));
parent = parent->next;
}
strbuf_addch(sb, '\n');
}
static char *get_header(const char *msg, const char *key)
{
size_t len;
const char *v = find_commit_header(msg, key, &len);
return v ? xmemdupz(v, len) : NULL;
}
static char *replace_encoding_header(char *buf, const char *encoding)
{
struct strbuf tmp = STRBUF_INIT;
size_t start, len;
char *cp = buf;
/* guess if there is an encoding header before a \n\n */
while (!starts_with(cp, "encoding ")) {
cp = strchr(cp, '\n');
if (!cp || *++cp == '\n')
return buf;
}
start = cp - buf;
cp = strchr(cp, '\n');
if (!cp)
return buf; /* should not happen but be defensive */
len = cp + 1 - (buf + start);
strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
if (is_encoding_utf8(encoding)) {
/* we have re-coded to UTF-8; drop the header */
strbuf_remove(&tmp, start, len);
} else {
/* just replaces XXXX in 'encoding XXXX\n' */
strbuf_splice(&tmp, start + strlen("encoding "),
len - strlen("encoding \n"),
encoding, strlen(encoding));
}
return strbuf_detach(&tmp, NULL);
}
const char *repo_logmsg_reencode(struct repository *r,
const struct commit *commit,
char **commit_encoding,
const char *output_encoding)
{
static const char *utf8 = "UTF-8";
const char *use_encoding;
char *encoding;
const char *msg = repo_get_commit_buffer(r, commit, NULL);
char *out;
if (!output_encoding || !*output_encoding) {
if (commit_encoding)
*commit_encoding = get_header(msg, "encoding");
return msg;
}
encoding = get_header(msg, "encoding");
if (commit_encoding)
*commit_encoding = encoding;
use_encoding = encoding ? encoding : utf8;
if (same_encoding(use_encoding, output_encoding)) {
/*
* No encoding work to be done. If we have no encoding header
* at all, then there's nothing to do, and we can return the
* message verbatim (whether newly allocated or not).
*/
if (!encoding)
return msg;
/*
* Otherwise, we still want to munge the encoding header in the
* result, which will be done by modifying the buffer. If we
* are using a fresh copy, we can reuse it. But if we are using
* the cached copy from repo_get_commit_buffer, we need to duplicate it
* to avoid munging the cached copy.
*/
if (msg == get_cached_commit_buffer(r, commit, NULL))
out = xstrdup(msg);
else
out = (char *)msg;
}
else {
/*
* There's actual encoding work to do. Do the reencoding, which
* still leaves the header to be replaced in the next step. At
* this point, we are done with msg. If we allocated a fresh
* copy, we can free it.
*/
out = reencode_string(msg, output_encoding, use_encoding);
if (out)
repo_unuse_commit_buffer(r, commit, msg);
}
/*
* This replacement actually consumes the buffer we hand it, so we do
* not have to worry about freeing the old "out" here.
*/
if (out)
out = replace_encoding_header(out, output_encoding);
if (!commit_encoding)
free(encoding);
/*
* If the re-encoding failed, out might be NULL here; in that
* case we just return the commit message verbatim.
*/
return out ? out : msg;
}
static int mailmap_name(const char **email, size_t *email_len,
const char **name, size_t *name_len)
{
static struct string_list *mail_map;
if (!mail_map) {
CALLOC_ARRAY(mail_map, 1);
read_mailmap(mail_map);
}
return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
}
static size_t format_person_part(struct strbuf *sb, char part,
const char *msg, int len,
const struct date_mode *dmode)
{
/* currently all placeholders have same length */
const int placeholder_len = 2;
struct ident_split s;
const char *name, *mail;
size_t maillen, namelen;
if (split_ident_line(&s, msg, len) < 0)
goto skip;
name = s.name_begin;
namelen = s.name_end - s.name_begin;
mail = s.mail_begin;
maillen = s.mail_end - s.mail_begin;
if (part == 'N' || part == 'E' || part == 'L') /* mailmap lookup */
mailmap_name(&mail, &maillen, &name, &namelen);
if (part == 'n' || part == 'N') { /* name */
strbuf_add(sb, name, namelen);
return placeholder_len;
}
if (part == 'e' || part == 'E') { /* email */
strbuf_add(sb, mail, maillen);
return placeholder_len;
}
if (part == 'l' || part == 'L') { /* local-part */
const char *at = memchr(mail, '@', maillen);
if (at)
maillen = at - mail;
strbuf_add(sb, mail, maillen);
return placeholder_len;
}
if (!s.date_begin)
goto skip;
if (part == 't') { /* date, UNIX timestamp */
strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
return placeholder_len;
}
switch (part) {
case 'd': /* date */
strbuf_addstr(sb, show_ident_date(&s, dmode));
return placeholder_len;
case 'D': /* date, RFC2822 style */
strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(RFC2822)));
return placeholder_len;
case 'r': /* date, relative */
strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(RELATIVE)));
return placeholder_len;
case 'i': /* date, ISO 8601-like */
strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(ISO8601)));
return placeholder_len;
case 'I': /* date, ISO 8601 strict */
strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(ISO8601_STRICT)));
return placeholder_len;
case 'h': /* date, human */
strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(HUMAN)));
return placeholder_len;
case 's':
strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(SHORT)));
return placeholder_len;
}
skip:
/*
* reading from either a bogus commit, or a reflog entry with
* %gn, %ge, etc.; 'sb' cannot be updated, but we still need
* to compute a valid return value.
*/
if (part == 'n' || part == 'e' || part == 't' || part == 'd'
|| part == 'D' || part == 'r' || part == 'i')
return placeholder_len;
return 0; /* unknown placeholder */
}
struct chunk {
size_t off;
size_t len;
};
enum flush_type {
no_flush,
flush_right,
flush_left,
flush_left_and_steal,
flush_both
};
enum trunc_type {
trunc_none,
trunc_left,
trunc_middle,
trunc_right
};
struct format_commit_context {
struct repository *repository;
const struct commit *commit;
const struct pretty_print_context *pretty_ctx;
unsigned commit_header_parsed:1;
unsigned commit_message_parsed:1;
struct signature_check signature_check;
enum flush_type flush_type;
enum trunc_type truncate;
const char *message;
char *commit_encoding;
size_t width, indent1, indent2;
int auto_color;
int padding;
/* These offsets are relative to the start of the commit message. */
struct chunk author;
struct chunk committer;
size_t message_off;
size_t subject_off;
size_t body_off;
/* The following ones are relative to the result struct strbuf. */
size_t wrap_start;
};
static void parse_commit_header(struct format_commit_context *context)
{
const char *msg = context->message;
int i;
for (i = 0; msg[i]; i++) {
const char *name;
int eol;
for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
; /* do nothing */
if (i == eol) {
break;
} else if (skip_prefix(msg + i, "author ", &name)) {
context->author.off = name - msg;
context->author.len = msg + eol - name;
} else if (skip_prefix(msg + i, "committer ", &name)) {
context->committer.off = name - msg;
context->committer.len = msg + eol - name;
}
i = eol;
}
context->message_off = i;
context->commit_header_parsed = 1;
}
static int istitlechar(char c)
{
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9') || c == '.' || c == '_';
}
void format_sanitized_subject(struct strbuf *sb, const char *msg, size_t len)
{
size_t trimlen;
size_t start_len = sb->len;
int space = 2;
int i;
for (i = 0; i < len; i++) {
if (istitlechar(msg[i])) {
if (space == 1)
strbuf_addch(sb, '-');
space = 0;
strbuf_addch(sb, msg[i]);
if (msg[i] == '.')
while (msg[i+1] == '.')
i++;
} else
space |= 1;
}
/* trim any trailing '.' or '-' characters */
trimlen = 0;
while (sb->len - trimlen > start_len &&
(sb->buf[sb->len - 1 - trimlen] == '.'
|| sb->buf[sb->len - 1 - trimlen] == '-'))
trimlen++;
strbuf_remove(sb, sb->len - trimlen, trimlen);
}
const char *format_subject(struct strbuf *sb, const char *msg,
const char *line_separator)
{
int first = 1;
for (;;) {
const char *line = msg;
int linelen = get_one_line(line);
msg += linelen;
if (!linelen || is_blank_line(line, &linelen))
break;
if (!sb)
continue;
strbuf_grow(sb, linelen + 2);
if (!first)
strbuf_addstr(sb, line_separator);
strbuf_add(sb, line, linelen);
first = 0;
}
return msg;
}
static void parse_commit_message(struct format_commit_context *c)
{
const char *msg = c->message + c->message_off;
const char *start = c->message;
msg = skip_blank_lines(msg);
c->subject_off = msg - start;
msg = format_subject(NULL, msg, NULL);
msg = skip_blank_lines(msg);
c->body_off = msg - start;
c->commit_message_parsed = 1;
}
static void strbuf_wrap(struct strbuf *sb, size_t pos,
size_t width, size_t indent1, size_t indent2)
{
struct strbuf tmp = STRBUF_INIT;
if (pos)
strbuf_add(&tmp, sb->buf, pos);
strbuf_add_wrapped_text(&tmp, sb->buf + pos,
cast_size_t_to_int(indent1),
cast_size_t_to_int(indent2),
cast_size_t_to_int(width));
strbuf_swap(&tmp, sb);
strbuf_release(&tmp);
}
static void rewrap_message_tail(struct strbuf *sb,
struct format_commit_context *c,
size_t new_width, size_t new_indent1,
size_t new_indent2)
{
if (c->width == new_width && c->indent1 == new_indent1 &&
c->indent2 == new_indent2)
return;
if (c->wrap_start < sb->len)
strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
c->wrap_start = sb->len;
c->width = new_width;
c->indent1 = new_indent1;
c->indent2 = new_indent2;
}
static int format_reflog_person(struct strbuf *sb,
char part,
struct reflog_walk_info *log,
const struct date_mode *dmode)
{
const char *ident;
if (!log)
return 2;
ident = get_reflog_ident(log);
if (!ident)
return 2;
return format_person_part(sb, part, ident, strlen(ident), dmode);
}
static size_t parse_color(struct strbuf *sb, /* in UTF-8 */
const char *placeholder,
struct format_commit_context *c)
{
const char *rest = placeholder;
const char *basic_color = NULL;
if (placeholder[1] == '(') {
const char *begin = placeholder + 2;
const char *end = strchr(begin, ')');
char color[COLOR_MAXLEN];
if (!end)
return 0;
if (skip_prefix(begin, "auto,", &begin)) {
if (!want_color(c->pretty_ctx->color))
return end - placeholder + 1;
} else if (skip_prefix(begin, "always,", &begin)) {
/* nothing to do; we do not respect want_color at all */
} else {
/* the default is the same as "auto" */
if (!want_color(c->pretty_ctx->color))
return end - placeholder + 1;
}
if (color_parse_mem(begin, end - begin, color) < 0)
die(_("unable to parse --pretty format"));
strbuf_addstr(sb, color);
return end - placeholder + 1;
}
/*
* We handle things like "%C(red)" above; for historical reasons, there
* are a few colors that can be specified without parentheses (and
* they cannot support things like "auto" or "always" at all).
*/
if (skip_prefix(placeholder + 1, "red", &rest))
basic_color = GIT_COLOR_RED;
else if (skip_prefix(placeholder + 1, "green", &rest))
basic_color = GIT_COLOR_GREEN;
else if (skip_prefix(placeholder + 1, "blue", &rest))
basic_color = GIT_COLOR_BLUE;
else if (skip_prefix(placeholder + 1, "reset", &rest))
basic_color = GIT_COLOR_RESET;
if (basic_color && want_color(c->pretty_ctx->color))
strbuf_addstr(sb, basic_color);
return rest - placeholder;
}
static size_t parse_padding_placeholder(const char *placeholder,
struct format_commit_context *c)
{
const char *ch = placeholder;
enum flush_type flush_type;
int to_column = 0;
switch (*ch++) {
case '<':
flush_type = flush_right;
break;
case '>':
if (*ch == '<') {
flush_type = flush_both;
ch++;
} else if (*ch == '>') {
flush_type = flush_left_and_steal;
ch++;
} else
flush_type = flush_left;
break;
default:
return 0;
}
/* the next value means "wide enough to that column" */
if (*ch == '|') {
to_column = 1;
ch++;
}
if (*ch == '(') {
const char *start = ch + 1;
const char *end = start + strcspn(start, ",)");
char *next;
int width;
if (!*end || end == start)
return 0;
width = strtol(start, &next, 10);
/*
* We need to limit the amount of padding, or otherwise this
* would allow the user to pad the buffer by arbitrarily many
* bytes and thus cause resource exhaustion.
*/
if (width < -FORMATTING_LIMIT || width > FORMATTING_LIMIT)
return 0;
if (next == start || width == 0)
return 0;
if (width < 0) {
if (to_column)
width += term_columns();
if (width < 0)
return 0;
}
c->padding = to_column ? -width : width;
c->flush_type = flush_type;
if (*end == ',') {
start = end + 1;
end = strchr(start, ')');
if (!end || end == start)
return 0;
if (starts_with(start, "trunc)"))
c->truncate = trunc_right;
else if (starts_with(start, "ltrunc)"))
c->truncate = trunc_left;
else if (starts_with(start, "mtrunc)"))
c->truncate = trunc_middle;
else
return 0;
} else
c->truncate = trunc_none;
return end - placeholder + 1;
}
return 0;
}
static int match_placeholder_arg_value(const char *to_parse, const char *candidate,
const char **end, const char **valuestart,
size_t *valuelen)
{
const char *p;
if (!(skip_prefix(to_parse, candidate, &p)))
return 0;
if (valuestart) {
if (*p == '=') {
*valuestart = p + 1;
*valuelen = strcspn(*valuestart, ",)");
p = *valuestart + *valuelen;
} else {
if (*p != ',' && *p != ')')
return 0;
*valuestart = NULL;
*valuelen = 0;
}
}
if (*p == ',') {
*end = p + 1;
return 1;
}
if (*p == ')') {
*end = p;
return 1;
}
return 0;
}
static int match_placeholder_bool_arg(const char *to_parse, const char *candidate,
const char **end, int *val)
{
const char *argval;
char *strval;
size_t arglen;
int v;
if (!match_placeholder_arg_value(to_parse, candidate, end, &argval, &arglen))
return 0;
if (!argval) {
*val = 1;
return 1;
}
strval = xstrndup(argval, arglen);
v = git_parse_maybe_bool(strval);
free(strval);
if (v == -1)
return 0;
*val = v;
return 1;
}
static int format_trailer_match_cb(const struct strbuf *key, void *ud)
{
const struct string_list *list = ud;
const struct string_list_item *item;
for_each_string_list_item (item, list) {
if (key->len == (uintptr_t)item->util &&
!strncasecmp(item->string, key->buf, key->len))
return 1;
}
return 0;
}
static struct strbuf *expand_string_arg(struct strbuf *sb,
const char *argval, size_t arglen)
{
char *fmt = xstrndup(argval, arglen);
const char *format = fmt;
strbuf_reset(sb);
while (strbuf_expand_step(sb, &format)) {
size_t len;
if (skip_prefix(format, "%", &format))
strbuf_addch(sb, '%');
else if ((len = strbuf_expand_literal(sb, format)))
format += len;
else
strbuf_addch(sb, '%');
}
free(fmt);
return sb;
}
int format_set_trailers_options(struct process_trailer_options *opts,
struct string_list *filter_list,
struct strbuf *sepbuf,
struct strbuf *kvsepbuf,
const char **arg,
char **invalid_arg)
{
for (;;) {
const char *argval;
size_t arglen;
if (**arg == ')')
break;
if (match_placeholder_arg_value(*arg, "key", arg, &argval, &arglen)) {
uintptr_t len = arglen;
if (!argval)
return -1;
if (len && argval[len - 1] == ':')
len--;
string_list_append(filter_list, argval)->util = (char *)len;
opts->filter = format_trailer_match_cb;
opts->filter_data = filter_list;
opts->only_trailers = 1;
} else if (match_placeholder_arg_value(*arg, "separator", arg, &argval, &arglen)) {
opts->separator = expand_string_arg(sepbuf, argval, arglen);
} else if (match_placeholder_arg_value(*arg, "key_value_separator", arg, &argval, &arglen)) {
opts->key_value_separator = expand_string_arg(kvsepbuf, argval, arglen);
} else if (!match_placeholder_bool_arg(*arg, "only", arg, &opts->only_trailers) &&
!match_placeholder_bool_arg(*arg, "unfold", arg, &opts->unfold) &&
!match_placeholder_bool_arg(*arg, "keyonly", arg, &opts->key_only) &&
!match_placeholder_bool_arg(*arg, "valueonly", arg, &opts->value_only)) {
if (invalid_arg) {
size_t len = strcspn(*arg, ",)");
*invalid_arg = xstrndup(*arg, len);
}
return -1;
}
}
return 0;
}
static size_t parse_describe_args(const char *start, struct strvec *args)
{
struct {
char *name;
enum {
DESCRIBE_ARG_BOOL,
DESCRIBE_ARG_INTEGER,
DESCRIBE_ARG_STRING,
} type;
} option[] = {
{ "tags", DESCRIBE_ARG_BOOL},
{ "abbrev", DESCRIBE_ARG_INTEGER },
{ "exclude", DESCRIBE_ARG_STRING },
{ "match", DESCRIBE_ARG_STRING },
};
const char *arg = start;
for (;;) {
int found = 0;
const char *argval;
size_t arglen = 0;
int optval = 0;
int i;
for (i = 0; !found && i < ARRAY_SIZE(option); i++) {
switch (option[i].type) {
case DESCRIBE_ARG_BOOL:
if (match_placeholder_bool_arg(arg, option[i].name, &arg, &optval)) {
if (optval)
strvec_pushf(args, "--%s", option[i].name);
else
strvec_pushf(args, "--no-%s", option[i].name);
found = 1;
}
break;
case DESCRIBE_ARG_INTEGER:
if (match_placeholder_arg_value(arg, option[i].name, &arg,
&argval, &arglen)) {
char *endptr;
if (!arglen)
return 0;
strtol(argval, &endptr, 10);
if (endptr - argval != arglen)
return 0;
strvec_pushf(args, "--%s=%.*s", option[i].name, (int)arglen, argval);
found = 1;
}
break;
case DESCRIBE_ARG_STRING:
if (match_placeholder_arg_value(arg, option[i].name, &arg,
&argval, &arglen)) {
if (!arglen)
return 0;
strvec_pushf(args, "--%s=%.*s", option[i].name, (int)arglen, argval);
found = 1;
}
break;
}
}
if (!found)
break;
}
return arg - start;
}
static int parse_decoration_option(const char **arg,
const char *name,
char **opt)
{
const char *argval;
size_t arglen;
if (match_placeholder_arg_value(*arg, name, arg, &argval, &arglen)) {
struct strbuf sb = STRBUF_INIT;
expand_string_arg(&sb, argval, arglen);
*opt = strbuf_detach(&sb, NULL);
return 1;
}
return 0;
}
static void parse_decoration_options(const char **arg,
struct decoration_options *opts)
{
while (parse_decoration_option(arg, "prefix", &opts->prefix) ||
parse_decoration_option(arg, "suffix", &opts->suffix) ||
parse_decoration_option(arg, "separator", &opts->separator) ||
parse_decoration_option(arg, "pointer", &opts->pointer) ||
parse_decoration_option(arg, "tag", &opts->tag))
;
}
static void free_decoration_options(const struct decoration_options *opts)
{
free(opts->prefix);
free(opts->suffix);
free(opts->separator);
free(opts->pointer);
free(opts->tag);
}
static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
const char *placeholder,
void *context)
{
struct format_commit_context *c = context;
const struct commit *commit = c->commit;
const char *msg = c->message;
struct commit_list *p;
const char *arg, *eol;
size_t res;
char **slot;
/* these are independent of the commit */
res = strbuf_expand_literal(sb, placeholder);
if (res)
return res;
switch (placeholder[0]) {
case 'C':
if (starts_with(placeholder + 1, "(auto)")) {
c->auto_color = want_color(c->pretty_ctx->color);
if (c->auto_color && sb->len)
strbuf_addstr(sb, GIT_COLOR_RESET);
return 7; /* consumed 7 bytes, "C(auto)" */
} else {
int ret = parse_color(sb, placeholder, c);
if (ret)
c->auto_color = 0;
/*
* Otherwise, we decided to treat %C<unknown>
* as a literal string, and the previous
* %C(auto) is still valid.
*/
return ret;
}
case 'w':
if (placeholder[1] == '(') {
unsigned long width = 0, indent1 = 0, indent2 = 0;
char *next;
const char *start = placeholder + 2;
const char *end = strchr(start, ')');
if (!end)
return 0;
if (end > start) {
width = strtoul(start, &next, 10);
if (*next == ',') {
indent1 = strtoul(next + 1, &next, 10);
if (*next == ',') {
indent2 = strtoul(next + 1,
&next, 10);
}
}
if (*next != ')')
return 0;
}
/*
* We need to limit the format here as it allows the
* user to prepend arbitrarily many bytes to the buffer
* when rewrapping.
*/
if (width > FORMATTING_LIMIT ||
indent1 > FORMATTING_LIMIT ||
indent2 > FORMATTING_LIMIT)
return 0;
rewrap_message_tail(sb, c, width, indent1, indent2);
return end - placeholder + 1;
} else
return 0;
case '<':
case '>':
return parse_padding_placeholder(placeholder, c);
}
if (skip_prefix(placeholder, "(describe", &arg)) {
struct child_process cmd = CHILD_PROCESS_INIT;
struct strbuf out = STRBUF_INIT;
struct strbuf err = STRBUF_INIT;
struct pretty_print_describe_status *describe_status;
describe_status = c->pretty_ctx->describe_status;
if (describe_status) {
if (!describe_status->max_invocations)
return 0;
describe_status->max_invocations--;
}
cmd.git_cmd = 1;
strvec_push(&cmd.args, "describe");
if (*arg == ':') {
arg++;
arg += parse_describe_args(arg, &cmd.args);
}
if (*arg != ')') {
child_process_clear(&cmd);
return 0;
}
strvec_push(&cmd.args, oid_to_hex(&commit->object.oid));
pipe_command(&cmd, NULL, 0, &out, 0, &err, 0);
strbuf_rtrim(&out);
strbuf_addbuf(sb, &out);
strbuf_release(&out);
strbuf_release(&err);
return arg - placeholder + 1;
}
/* these depend on the commit */
if (!commit->object.parsed)
parse_object(the_repository, &commit->object.oid);
switch (placeholder[0]) {
case 'H': /* commit hash */
strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
strbuf_addstr(sb, oid_to_hex(&commit->object.oid));
strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
return 1;
case 'h': /* abbreviated commit hash */
strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
strbuf_add_unique_abbrev(sb, &commit->object.oid,
c->pretty_ctx->abbrev);
strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
return 1;
case 'T': /* tree hash */
strbuf_addstr(sb, oid_to_hex(get_commit_tree_oid(commit)));
return 1;
case 't': /* abbreviated tree hash */
strbuf_add_unique_abbrev(sb,
get_commit_tree_oid(commit),
c->pretty_ctx->abbrev);
return 1;
case 'P': /* parent hashes */
for (p = commit->parents; p; p = p->next) {
if (p != commit->parents)
strbuf_addch(sb, ' ');
strbuf_addstr(sb, oid_to_hex(&p->item->object.oid));
}
return 1;
case 'p': /* abbreviated parent hashes */
for (p = commit->parents; p; p = p->next) {
if (p != commit->parents)
strbuf_addch(sb, ' ');
strbuf_add_unique_abbrev(sb, &p->item->object.oid,
c->pretty_ctx->abbrev);
}
return 1;
case 'm': /* left/right/bottom */
strbuf_addstr(sb, get_revision_mark(NULL, commit));
return 1;
case 'd':
format_decorations(sb, commit, c->auto_color, NULL);
return 1;
case 'D':
{
const struct decoration_options opts = {
.prefix = "",
.suffix = ""
};
format_decorations(sb, commit, c->auto_color, &opts);
return 1;
}
case 'S': /* tag/branch like --source */
if (!(c->pretty_ctx->rev && c->pretty_ctx->rev->sources))
return 0;
slot = revision_sources_at(c->pretty_ctx->rev->sources, commit);
if (!(slot && *slot))
return 0;
strbuf_addstr(sb, *slot);
return 1;
case 'g': /* reflog info */
switch(placeholder[1]) {
case 'd': /* reflog selector */
case 'D':
if (c->pretty_ctx->reflog_info)
get_reflog_selector(sb,
c->pretty_ctx->reflog_info,
&c->pretty_ctx->date_mode,
c->pretty_ctx->date_mode_explicit,
(placeholder[1] == 'd'));
return 2;
case 's': /* reflog message */
if (c->pretty_ctx->reflog_info)
get_reflog_message(sb, c->pretty_ctx->reflog_info);
return 2;
case 'n':
case 'N':
case 'e':
case 'E':
return format_reflog_person(sb,
placeholder[1],
c->pretty_ctx->reflog_info,
&c->pretty_ctx->date_mode);
}
return 0; /* unknown %g placeholder */
case 'N':
if (c->pretty_ctx->notes_message) {
strbuf_addstr(sb, c->pretty_ctx->notes_message);
return 1;
}
return 0;
}
if (placeholder[0] == 'G') {
if (!c->signature_check.result)
check_commit_signature(c->commit, &(c->signature_check));
switch (placeholder[1]) {
case 'G':
if (c->signature_check.output)
strbuf_addstr(sb, c->signature_check.output);
break;
case '?':
switch (c->signature_check.result) {
case 'G':
switch (c->signature_check.trust_level) {
case TRUST_UNDEFINED:
case TRUST_NEVER:
strbuf_addch(sb, 'U');
break;
default:
strbuf_addch(sb, 'G');
break;
}
break;
case 'B':
case 'E':
case 'N':
case 'X':
case 'Y':
case 'R':
strbuf_addch(sb, c->signature_check.result);
}
break;
case 'S':
if (c->signature_check.signer)
strbuf_addstr(sb, c->signature_check.signer);
break;
case 'K':
if (c->signature_check.key)
strbuf_addstr(sb, c->signature_check.key);
break;
case 'F':
if (c->signature_check.fingerprint)
strbuf_addstr(sb, c->signature_check.fingerprint);
break;
case 'P':
if (c->signature_check.primary_key_fingerprint)
strbuf_addstr(sb, c->signature_check.primary_key_fingerprint);
break;
case 'T':
strbuf_addstr(sb, gpg_trust_level_to_str(c->signature_check.trust_level));
break;
default:
return 0;
}
return 2;
}
if (skip_prefix(placeholder, "(decorate", &arg)) {
struct decoration_options opts = { NULL };
size_t ret = 0;
if (*arg == ':') {
arg++;
parse_decoration_options(&arg, &opts);
}
if (*arg == ')') {
format_decorations(sb, commit, c->auto_color, &opts);
ret = arg - placeholder + 1;
}
free_decoration_options(&opts);
return ret;
}
/* For the rest we have to parse the commit header. */
if (!c->commit_header_parsed) {
msg = c->message =
repo_logmsg_reencode(c->repository, commit,
&c->commit_encoding, "UTF-8");
parse_commit_header(c);
}
switch (placeholder[0]) {
case 'a': /* author ... */
return format_person_part(sb, placeholder[1],
msg + c->author.off, c->author.len,
&c->pretty_ctx->date_mode);
case 'c': /* committer ... */
return format_person_part(sb, placeholder[1],
msg + c->committer.off, c->committer.len,
&c->pretty_ctx->date_mode);
case 'e': /* encoding */
if (c->commit_encoding)
strbuf_addstr(sb, c->commit_encoding);
return 1;
case 'B': /* raw body */
/* message_off is always left at the initial newline */
strbuf_addstr(sb, msg + c->message_off + 1);
return 1;
}
/* Now we need to parse the commit message. */
if (!c->commit_message_parsed)
parse_commit_message(c);
switch (placeholder[0]) {
case 's': /* subject */
format_subject(sb, msg + c->subject_off, " ");
return 1;
case 'f': /* sanitized subject */
eol = strchrnul(msg + c->subject_off, '\n');
format_sanitized_subject(sb, msg + c->subject_off, eol - (msg + c->subject_off));
return 1;
case 'b': /* body */
strbuf_addstr(sb, msg + c->body_off);
return 1;
}
if (skip_prefix(placeholder, "(trailers", &arg)) {
struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
struct string_list filter_list = STRING_LIST_INIT_NODUP;
struct strbuf sepbuf = STRBUF_INIT;
struct strbuf kvsepbuf = STRBUF_INIT;
size_t ret = 0;
opts.no_divider = 1;
if (*arg == ':') {
arg++;
if (format_set_trailers_options(&opts, &filter_list, &sepbuf, &kvsepbuf, &arg, NULL))
goto trailer_out;
}
if (*arg == ')') {
format_trailers_from_commit(sb, msg + c->subject_off, &opts);
ret = arg - placeholder + 1;
}
trailer_out:
string_list_clear(&filter_list, 0);
strbuf_release(&sepbuf);
return ret;
}
return 0; /* unknown placeholder */
}
static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
const char *placeholder,
struct format_commit_context *c)
{
struct strbuf local_sb = STRBUF_INIT;
size_t total_consumed = 0;
int len, padding = c->padding;
if (padding < 0) {
const char *start = strrchr(sb->buf, '\n');
int occupied;
if (!start)
start = sb->buf;
occupied = utf8_strnwidth(start, strlen(start), 1);
occupied += c->pretty_ctx->graph_width;
padding = (-padding) - occupied;
}
while (1) {
int modifier = *placeholder == 'C';
size_t consumed = format_commit_one(&local_sb, placeholder, c);
total_consumed += consumed;
if (!modifier)
break;
placeholder += consumed;
if (*placeholder != '%')
break;
placeholder++;
total_consumed++;
}
len = utf8_strnwidth(local_sb.buf, local_sb.len, 1);
if (c->flush_type == flush_left_and_steal) {
const char *ch = sb->buf + sb->len - 1;
while (len > padding && ch > sb->buf) {
const char *p;
if (*ch == ' ') {
ch--;
padding++;
continue;
}
/* check for trailing ansi sequences */
if (*ch != 'm')
break;
p = ch - 1;
while (p > sb->buf && ch - p < 10 && *p != '\033')
p--;
if (*p != '\033' ||
ch + 1 - p != display_mode_esc_sequence_len(p))
break;
/*
* got a good ansi sequence, put it back to
* local_sb as we're cutting sb
*/
strbuf_insert(&local_sb, 0, p, ch + 1 - p);
ch = p - 1;
}
strbuf_setlen(sb, ch + 1 - sb->buf);
c->flush_type = flush_left;
}
if (len > padding) {
switch (c->truncate) {
case trunc_left:
strbuf_utf8_replace(&local_sb,
0, len - (padding - 2),
"..");
break;
case trunc_middle:
strbuf_utf8_replace(&local_sb,
padding / 2 - 1,
len - (padding - 2),
"..");
break;
case trunc_right:
strbuf_utf8_replace(&local_sb,
padding - 2, len - (padding - 2),
"..");
break;
case trunc_none:
break;
}
strbuf_addbuf(sb, &local_sb);
} else {
size_t sb_len = sb->len, offset = 0;
if (c->flush_type == flush_left)
offset = padding - len;
else if (c->flush_type == flush_both)
offset = (padding - len) / 2;
/*
* we calculate padding in columns, now
* convert it back to chars
*/
padding = padding - len + local_sb.len;
strbuf_addchars(sb, ' ', padding);
memcpy(sb->buf + sb_len + offset, local_sb.buf,
local_sb.len);
}
strbuf_release(&local_sb);
c->flush_type = no_flush;
return total_consumed;
}
static size_t format_commit_item(struct strbuf *sb, /* in UTF-8 */
const char *placeholder,
struct format_commit_context *context)
{
size_t consumed, orig_len;
enum {
NO_MAGIC,
ADD_LF_BEFORE_NON_EMPTY,
DEL_LF_BEFORE_EMPTY,
ADD_SP_BEFORE_NON_EMPTY
} magic = NO_MAGIC;
switch (placeholder[0]) {
case '-':
magic = DEL_LF_BEFORE_EMPTY;
break;
case '+':
magic = ADD_LF_BEFORE_NON_EMPTY;
break;
case ' ':
magic = ADD_SP_BEFORE_NON_EMPTY;
break;
default:
break;
}
if (magic != NO_MAGIC) {
placeholder++;
switch (placeholder[0]) {
case 'w':
/*
* `%+w()` cannot ever expand to a non-empty string,
* and it potentially changes the layout of preceding
* contents. We're thus not able to handle the magic in
* this combination and refuse the pattern.
*/
return 0;
};
}
orig_len = sb->len;
if (context->flush_type == no_flush)
consumed = format_commit_one(sb, placeholder, context);
else
consumed = format_and_pad_commit(sb, placeholder, context);
if (magic == NO_MAGIC)
return consumed;
if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
while (sb->len && sb->buf[sb->len - 1] == '\n')
strbuf_setlen(sb, sb->len - 1);
} else if (orig_len != sb->len) {
if (magic == ADD_LF_BEFORE_NON_EMPTY)
strbuf_insertstr(sb, orig_len, "\n");
else if (magic == ADD_SP_BEFORE_NON_EMPTY)
strbuf_insertstr(sb, orig_len, " ");
}
return consumed + 1;
}
void userformat_find_requirements(const char *fmt, struct userformat_want *w)
{
if (!fmt) {
if (!user_format)
return;
fmt = user_format;
}
while ((fmt = strchr(fmt, '%'))) {
fmt++;
if (skip_prefix(fmt, "%", &fmt))
continue;
if (*fmt == '+' || *fmt == '-' || *fmt == ' ')
fmt++;
switch (*fmt) {
case 'N':
w->notes = 1;
break;
case 'S':
w->source = 1;
break;
case 'd':
case 'D':
w->decorate = 1;
break;
}
}
}
void repo_format_commit_message(struct repository *r,
const struct commit *commit,
const char *format, struct strbuf *sb,
const struct pretty_print_context *pretty_ctx)
{
struct format_commit_context context = {
.repository = r,
.commit = commit,
.pretty_ctx = pretty_ctx,
.wrap_start = sb->len
};
const char *output_enc = pretty_ctx->output_encoding;
const char *utf8 = "UTF-8";
while (strbuf_expand_step(sb, &format)) {
size_t len;
if (skip_prefix(format, "%", &format))
strbuf_addch(sb, '%');
else if ((len = format_commit_item(sb, format, &context)))
format += len;
else
strbuf_addch(sb, '%');
}
rewrap_message_tail(sb, &context, 0, 0, 0);
/*
* Convert output to an actual output encoding; note that
* format_commit_item() will always use UTF-8, so we don't
* have to bother if that's what the output wants.
*/
if (output_enc) {
if (same_encoding(utf8, output_enc))
output_enc = NULL;
} else {
if (context.commit_encoding &&
!same_encoding(context.commit_encoding, utf8))
output_enc = context.commit_encoding;
}
if (output_enc) {
size_t outsz;
char *out = reencode_string_len(sb->buf, sb->len,
output_enc, utf8, &outsz);
if (out)
strbuf_attach(sb, out, outsz, outsz + 1);
}
free(context.commit_encoding);
repo_unuse_commit_buffer(r, commit, context.message);
}
static void pp_header(struct pretty_print_context *pp,
const char *encoding,
const struct commit *commit,
const char **msg_p,
struct strbuf *sb)
{
int parents_shown = 0;
for (;;) {
const char *name, *line = *msg_p;
int linelen = get_one_line(*msg_p);
if (!linelen)
return;
*msg_p += linelen;
if (linelen == 1)
/* End of header */
return;
if (pp->fmt == CMIT_FMT_RAW) {
strbuf_add(sb, line, linelen);
continue;
}
if (starts_with(line, "parent ")) {
if (linelen != the_hash_algo->hexsz + 8)
die("bad parent line in commit");
continue;
}
if (!parents_shown) {
unsigned num = commit_list_count(commit->parents);
/* with enough slop */
strbuf_grow(sb, num * (GIT_MAX_HEXSZ + 10) + 20);
add_merge_info(pp, sb, commit);
parents_shown = 1;
}
/*
* MEDIUM == DEFAULT shows only author with dates.
* FULL shows both authors but not dates.
* FULLER shows both authors and dates.
*/
if (skip_prefix(line, "author ", &name)) {
strbuf_grow(sb, linelen + 80);
pp_user_info(pp, "Author", sb, name, encoding);
}
if (skip_prefix(line, "committer ", &name) &&
(pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
strbuf_grow(sb, linelen + 80);
pp_user_info(pp, "Commit", sb, name, encoding);
}
}
}
void pp_title_line(struct pretty_print_context *pp,
const char **msg_p,
struct strbuf *sb,
const char *encoding,
int need_8bit_cte)
{
static const int max_length = 78; /* per rfc2047 */
struct strbuf title;
strbuf_init(&title, 80);
*msg_p = format_subject(&title, *msg_p,
pp->preserve_subject ? "\n" : " ");
strbuf_grow(sb, title.len + 1024);
if (pp->print_email_subject) {
if (pp->rev)
fmt_output_email_subject(sb, pp->rev);
if (pp->encode_email_headers &&
needs_rfc2047_encoding(title.buf, title.len))
add_rfc2047(sb, title.buf, title.len,
encoding, RFC2047_SUBJECT);
else
strbuf_add_wrapped_bytes(sb, title.buf, title.len,
-last_line_length(sb), 1, max_length);
} else {
strbuf_addbuf(sb, &title);
}
strbuf_addch(sb, '\n');
if (need_8bit_cte == 0) {
int i;
for (i = 0; i < pp->in_body_headers.nr; i++) {
if (has_non_ascii(pp->in_body_headers.items[i].string)) {
need_8bit_cte = 1;
break;
}
}
}
if (need_8bit_cte > 0) {
const char *header_fmt =
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=%s\n"
"Content-Transfer-Encoding: 8bit\n";
strbuf_addf(sb, header_fmt, encoding);
}
if (pp->after_subject) {
strbuf_addstr(sb, pp->after_subject);
}
if (cmit_fmt_is_mail(pp->fmt)) {
strbuf_addch(sb, '\n');
}
if (pp->in_body_headers.nr) {
int i;
for (i = 0; i < pp->in_body_headers.nr; i++) {
strbuf_addstr(sb, pp->in_body_headers.items[i].string);
free(pp->in_body_headers.items[i].string);
}
string_list_clear(&pp->in_body_headers, 0);
strbuf_addch(sb, '\n');
}
strbuf_release(&title);
}
static int pp_utf8_width(const char *start, const char *end)
{
int width = 0;
size_t remain = end - start;
while (remain) {
int n = utf8_width(&start, &remain);
if (n < 0 || !start)
return -1;
width += n;
}
return width;
}
static void strbuf_add_tabexpand(struct strbuf *sb, struct grep_opt *opt,
int color, int tabwidth, const char *line,
int linelen)
{
const char *tab;
while ((tab = memchr(line, '\t', linelen)) != NULL) {
int width = pp_utf8_width(line, tab);
/*
* If it wasn't well-formed utf8, or it
* had characters with badly defined
* width (control characters etc), just
* give up on trying to align things.
*/
if (width < 0)
break;
/* Output the data .. */
append_line_with_color(sb, opt, line, tab - line, color,
GREP_CONTEXT_BODY,
GREP_HEADER_FIELD_MAX);
/* .. and the de-tabified tab */
strbuf_addchars(sb, ' ', tabwidth - (width % tabwidth));
/* Skip over the printed part .. */
linelen -= tab + 1 - line;
line = tab + 1;
}
/*
* Print out everything after the last tab without
* worrying about width - there's nothing more to
* align.
*/
append_line_with_color(sb, opt, line, linelen, color, GREP_CONTEXT_BODY,
GREP_HEADER_FIELD_MAX);
}
/*
* pp_handle_indent() prints out the intendation, and
* the whole line (without the final newline), after
* de-tabifying.
*/
static void pp_handle_indent(struct pretty_print_context *pp,
struct strbuf *sb, int indent,
const char *line, int linelen)
{
struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
strbuf_addchars(sb, ' ', indent);
if (pp->expand_tabs_in_log)
strbuf_add_tabexpand(sb, opt, pp->color, pp->expand_tabs_in_log,
line, linelen);
else
append_line_with_color(sb, opt, line, linelen, pp->color,
GREP_CONTEXT_BODY,
GREP_HEADER_FIELD_MAX);
}
static int is_mboxrd_from(const char *line, int len)
{
/*
* a line matching /^From $/ here would only have len == 4
* at this point because is_empty_line would've trimmed all
* trailing space
*/
return len > 4 && starts_with(line + strspn(line, ">"), "From ");
}
void pp_remainder(struct pretty_print_context *pp,
const char **msg_p,
struct strbuf *sb,
int indent)
{
struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
int first = 1;
for (;;) {
const char *line = *msg_p;
int linelen = get_one_line(line);
*msg_p += linelen;
if (!linelen)
break;
if (is_blank_line(line, &linelen)) {
if (first)
continue;
if (pp->fmt == CMIT_FMT_SHORT)
break;
}
first = 0;
strbuf_grow(sb, linelen + indent + 20);
if (indent)
pp_handle_indent(pp, sb, indent, line, linelen);
else if (pp->expand_tabs_in_log)
strbuf_add_tabexpand(sb, opt, pp->color,
pp->expand_tabs_in_log, line,
linelen);
else {
if (pp->fmt == CMIT_FMT_MBOXRD &&
is_mboxrd_from(line, linelen))
strbuf_addch(sb, '>');
append_line_with_color(sb, opt, line, linelen,
pp->color, GREP_CONTEXT_BODY,
GREP_HEADER_FIELD_MAX);
}
strbuf_addch(sb, '\n');
}
}
void pretty_print_commit(struct pretty_print_context *pp,
const struct commit *commit,
struct strbuf *sb)
{
unsigned long beginning_of_body;
int indent = 4;
const char *msg;
const char *reencoded;
const char *encoding;
int need_8bit_cte = pp->need_8bit_cte;
if (pp->fmt == CMIT_FMT_USERFORMAT) {
repo_format_commit_message(the_repository, commit,
user_format, sb, pp);
return;
}
encoding = get_log_output_encoding();
msg = reencoded = repo_logmsg_reencode(the_repository, commit, NULL,
encoding);
if (pp->fmt == CMIT_FMT_ONELINE || cmit_fmt_is_mail(pp->fmt))
indent = 0;
/*
* We need to check and emit Content-type: to mark it
* as 8-bit if we haven't done so.
*/
if (cmit_fmt_is_mail(pp->fmt) && need_8bit_cte == 0) {
int i, ch, in_body;
for (in_body = i = 0; (ch = msg[i]); i++) {
if (!in_body) {
/* author could be non 7-bit ASCII but
* the log may be so; skip over the
* header part first.
*/
if (ch == '\n' && msg[i+1] == '\n')
in_body = 1;
}
else if (non_ascii(ch)) {
need_8bit_cte = 1;
break;
}
}
}
pp_header(pp, encoding, commit, &msg, sb);
if (pp->fmt != CMIT_FMT_ONELINE && !pp->print_email_subject) {
strbuf_addch(sb, '\n');
}
/* Skip excess blank lines at the beginning of body, if any... */
msg = skip_blank_lines(msg);
/* These formats treat the title line specially. */
if (pp->fmt == CMIT_FMT_ONELINE || cmit_fmt_is_mail(pp->fmt))
pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
beginning_of_body = sb->len;
if (pp->fmt != CMIT_FMT_ONELINE)
pp_remainder(pp, &msg, sb, indent);
strbuf_rtrim(sb);
/* Make sure there is an EOLN for the non-oneline case */
if (pp->fmt != CMIT_FMT_ONELINE)
strbuf_addch(sb, '\n');
/*
* The caller may append additional body text in e-mail
* format. Make sure we did not strip the blank line
* between the header and the body.
*/
if (cmit_fmt_is_mail(pp->fmt) && sb->len <= beginning_of_body)
strbuf_addch(sb, '\n');
repo_unuse_commit_buffer(the_repository, commit, reencoded);
}
void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
struct strbuf *sb)
{
struct pretty_print_context pp = {0};
pp.fmt = fmt;
pretty_print_commit(&pp, commit, sb);
}
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