git/builtin/shortlog.c
René Scharfe d41626ff9e shortlog: don't set after_subject to an empty string
The string after_subject is added to a strbuf by pp_title_line() if
it's not NULL.  Adding an empty string has the same effect as not
adding anything, but the latter is easier, so don't bother changing
the context member from NULL to "".

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-18 10:28:45 -07:00

354 lines
9.3 KiB
C

#include "builtin.h"
#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "string-list.h"
#include "revision.h"
#include "utf8.h"
#include "mailmap.h"
#include "shortlog.h"
#include "parse-options.h"
static char const * const shortlog_usage[] = {
N_("git shortlog [<options>] [<revision-range>] [[--] [<path>...]]"),
NULL
};
/*
* The util field of our string_list_items will contain one of two things:
*
* - if --summary is not in use, it will point to a string list of the
* oneline subjects assigned to this author
*
* - if --summary is in use, we don't need that list; we only need to know
* its size. So we abuse the pointer slot to store our integer counter.
*
* This macro accesses the latter.
*/
#define UTIL_TO_INT(x) ((intptr_t)(x)->util)
static int compare_by_counter(const void *a1, const void *a2)
{
const struct string_list_item *i1 = a1, *i2 = a2;
return UTIL_TO_INT(i2) - UTIL_TO_INT(i1);
}
static int compare_by_list(const void *a1, const void *a2)
{
const struct string_list_item *i1 = a1, *i2 = a2;
const struct string_list *l1 = i1->util, *l2 = i2->util;
if (l1->nr < l2->nr)
return 1;
else if (l1->nr == l2->nr)
return 0;
else
return -1;
}
static void insert_one_record(struct shortlog *log,
const char *author,
const char *oneline)
{
struct string_list_item *item;
const char *mailbuf, *namebuf;
size_t namelen, maillen;
struct strbuf namemailbuf = STRBUF_INIT;
struct ident_split ident;
if (split_ident_line(&ident, author, strlen(author)))
return;
namebuf = ident.name_begin;
mailbuf = ident.mail_begin;
namelen = ident.name_end - ident.name_begin;
maillen = ident.mail_end - ident.mail_begin;
map_user(&log->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
strbuf_add(&namemailbuf, namebuf, namelen);
if (log->email)
strbuf_addf(&namemailbuf, " <%.*s>", (int)maillen, mailbuf);
item = string_list_insert(&log->list, namemailbuf.buf);
if (log->summary)
item->util = (void *)(UTIL_TO_INT(item) + 1);
else {
const char *dot3 = log->common_repo_prefix;
char *buffer, *p;
struct strbuf subject = STRBUF_INIT;
const char *eol;
/* Skip any leading whitespace, including any blank lines. */
while (*oneline && isspace(*oneline))
oneline++;
eol = strchr(oneline, '\n');
if (!eol)
eol = oneline + strlen(oneline);
if (starts_with(oneline, "[PATCH")) {
char *eob = strchr(oneline, ']');
if (eob && (!eol || eob < eol))
oneline = eob + 1;
}
while (*oneline && isspace(*oneline) && *oneline != '\n')
oneline++;
format_subject(&subject, oneline, " ");
buffer = strbuf_detach(&subject, NULL);
if (dot3) {
int dot3len = strlen(dot3);
if (dot3len > 5) {
while ((p = strstr(buffer, dot3)) != NULL) {
int taillen = strlen(p) - dot3len;
memcpy(p, "/.../", 5);
memmove(p + 5, p + dot3len, taillen + 1);
}
}
}
if (item->util == NULL)
item->util = xcalloc(1, sizeof(struct string_list));
string_list_append(item->util, buffer);
}
}
static void read_from_stdin(struct shortlog *log)
{
struct strbuf author = STRBUF_INIT;
struct strbuf oneline = STRBUF_INIT;
static const char *author_match[2] = { "Author: ", "author " };
static const char *committer_match[2] = { "Commit: ", "committer " };
const char **match;
match = log->committer ? committer_match : author_match;
while (strbuf_getline_lf(&author, stdin) != EOF) {
const char *v;
if (!skip_prefix(author.buf, match[0], &v) &&
!skip_prefix(author.buf, match[1], &v))
continue;
while (strbuf_getline_lf(&oneline, stdin) != EOF &&
oneline.len)
; /* discard headers */
while (strbuf_getline_lf(&oneline, stdin) != EOF &&
!oneline.len)
; /* discard blanks */
insert_one_record(log, v, oneline.buf);
}
strbuf_release(&author);
strbuf_release(&oneline);
}
void shortlog_add_commit(struct shortlog *log, struct commit *commit)
{
struct strbuf author = STRBUF_INIT;
struct strbuf oneline = STRBUF_INIT;
struct pretty_print_context ctx = {0};
const char *fmt;
ctx.fmt = CMIT_FMT_USERFORMAT;
ctx.abbrev = log->abbrev;
ctx.subject = "";
ctx.date_mode.type = DATE_NORMAL;
ctx.output_encoding = get_log_output_encoding();
fmt = log->committer ? "%cn <%ce>" : "%an <%ae>";
format_commit_message(commit, fmt, &author, &ctx);
if (!log->summary) {
if (log->user_format)
pretty_print_commit(&ctx, commit, &oneline);
else
format_commit_message(commit, "%s", &oneline, &ctx);
}
insert_one_record(log, author.buf, oneline.len ? oneline.buf : "<none>");
strbuf_release(&author);
strbuf_release(&oneline);
}
static void get_from_rev(struct rev_info *rev, struct shortlog *log)
{
struct commit *commit;
if (prepare_revision_walk(rev))
die(_("revision walk setup failed"));
while ((commit = get_revision(rev)) != NULL)
shortlog_add_commit(log, commit);
}
static int parse_uint(char const **arg, int comma, int defval)
{
unsigned long ul;
int ret;
char *endp;
ul = strtoul(*arg, &endp, 10);
if (*endp && *endp != comma)
return -1;
if (ul > INT_MAX)
return -1;
ret = *arg == endp ? defval : (int)ul;
*arg = *endp ? endp + 1 : endp;
return ret;
}
static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
#define DEFAULT_WRAPLEN 76
#define DEFAULT_INDENT1 6
#define DEFAULT_INDENT2 9
static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
{
struct shortlog *log = opt->value;
log->wrap_lines = !unset;
if (unset)
return 0;
if (!arg) {
log->wrap = DEFAULT_WRAPLEN;
log->in1 = DEFAULT_INDENT1;
log->in2 = DEFAULT_INDENT2;
return 0;
}
log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
return error(wrap_arg_usage);
if (log->wrap &&
((log->in1 && log->wrap <= log->in1) ||
(log->in2 && log->wrap <= log->in2)))
return error(wrap_arg_usage);
return 0;
}
void shortlog_init(struct shortlog *log)
{
memset(log, 0, sizeof(*log));
read_mailmap(&log->mailmap, &log->common_repo_prefix);
log->list.strdup_strings = 1;
log->wrap = DEFAULT_WRAPLEN;
log->in1 = DEFAULT_INDENT1;
log->in2 = DEFAULT_INDENT2;
}
int cmd_shortlog(int argc, const char **argv, const char *prefix)
{
struct shortlog log = { STRING_LIST_INIT_NODUP };
struct rev_info rev;
int nongit = !startup_info->have_repository;
const struct option options[] = {
OPT_BOOL('c', "committer", &log.committer,
N_("Group by committer rather than author")),
OPT_BOOL('n', "numbered", &log.sort_by_number,
N_("sort output according to the number of commits per author")),
OPT_BOOL('s', "summary", &log.summary,
N_("Suppress commit descriptions, only provides commit count")),
OPT_BOOL('e', "email", &log.email,
N_("Show the email address of each author")),
{ OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
OPT_END(),
};
struct parse_opt_ctx_t ctx;
git_config(git_default_config, NULL);
shortlog_init(&log);
init_revisions(&rev, prefix);
parse_options_start(&ctx, argc, argv, prefix, options,
PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
for (;;) {
switch (parse_options_step(&ctx, options, shortlog_usage)) {
case PARSE_OPT_HELP:
exit(129);
case PARSE_OPT_DONE:
goto parse_done;
}
parse_revision_opt(&rev, &ctx, options, shortlog_usage);
}
parse_done:
argc = parse_options_end(&ctx);
if (setup_revisions(argc, argv, &rev, NULL) != 1) {
error(_("unrecognized argument: %s"), argv[1]);
usage_with_options(shortlog_usage, options);
}
log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
log.abbrev = rev.abbrev;
log.file = rev.diffopt.file;
/* assume HEAD if from a tty */
if (!nongit && !rev.pending.nr && isatty(0))
add_head_to_pending(&rev);
if (rev.pending.nr == 0) {
if (isatty(0))
fprintf(stderr, _("(reading log message from standard input)\n"));
read_from_stdin(&log);
}
else
get_from_rev(&rev, &log);
shortlog_output(&log);
if (log.file != stdout)
fclose(log.file);
return 0;
}
static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
const struct shortlog *log)
{
strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
strbuf_addch(sb, '\n');
}
void shortlog_output(struct shortlog *log)
{
int i, j;
struct strbuf sb = STRBUF_INIT;
if (log->sort_by_number)
QSORT(log->list.items, log->list.nr,
log->summary ? compare_by_counter : compare_by_list);
for (i = 0; i < log->list.nr; i++) {
const struct string_list_item *item = &log->list.items[i];
if (log->summary) {
fprintf(log->file, "%6d\t%s\n",
(int)UTIL_TO_INT(item), item->string);
} else {
struct string_list *onelines = item->util;
fprintf(log->file, "%s (%d):\n",
item->string, onelines->nr);
for (j = onelines->nr - 1; j >= 0; j--) {
const char *msg = onelines->items[j].string;
if (log->wrap_lines) {
strbuf_reset(&sb);
add_wrapped_shortlog_msg(&sb, msg, log);
fwrite(sb.buf, sb.len, 1, log->file);
}
else
fprintf(log->file, " %s\n", msg);
}
putc('\n', log->file);
onelines->strdup_strings = 1;
string_list_clear(onelines, 0);
free(onelines);
}
log->list.items[i].util = NULL;
}
strbuf_release(&sb);
log->list.strdup_strings = 1;
string_list_clear(&log->list, 1);
clear_mailmap(&log->mailmap);
}