git/builtin-shortlog.c

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7.9 KiB
C
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#include "builtin.h"
#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "path-list.h"
#include "revision.h"
static const char shortlog_usage[] =
"git-shortlog [-n] [-s] [<commit-id>... ]";
static char *common_repo_prefix;
static int compare_by_number(const void *a1, const void *a2)
{
const struct path_list_item *i1 = a1, *i2 = a2;
const struct path_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 struct path_list mailmap = {NULL, 0, 0, 0};
static int read_mailmap(const char *filename)
{
char buffer[1024];
FILE *f = fopen(filename, "r");
if (f == NULL)
return 1;
while (fgets(buffer, sizeof(buffer), f) != NULL) {
char *end_of_name, *left_bracket, *right_bracket;
char *name, *email;
int i;
if (buffer[0] == '#') {
static const char abbrev[] = "# repo-abbrev:";
int abblen = sizeof(abbrev) - 1;
int len = strlen(buffer);
if (len && buffer[len - 1] == '\n')
buffer[--len] = 0;
if (!strncmp(buffer, abbrev, abblen)) {
char *cp;
if (common_repo_prefix)
free(common_repo_prefix);
common_repo_prefix = xmalloc(len);
for (cp = buffer + abblen; isspace(*cp); cp++)
; /* nothing */
strcpy(common_repo_prefix, cp);
}
continue;
}
if ((left_bracket = strchr(buffer, '<')) == NULL)
continue;
if ((right_bracket = strchr(left_bracket + 1, '>')) == NULL)
continue;
if (right_bracket == left_bracket + 1)
continue;
for (end_of_name = left_bracket; end_of_name != buffer
&& isspace(end_of_name[-1]); end_of_name--)
/* keep on looking */
if (end_of_name == buffer)
continue;
name = xmalloc(end_of_name - buffer + 1);
strlcpy(name, buffer, end_of_name - buffer + 1);
email = xmalloc(right_bracket - left_bracket);
for (i = 0; i < right_bracket - left_bracket - 1; i++)
email[i] = tolower(left_bracket[i + 1]);
email[right_bracket - left_bracket - 1] = '\0';
path_list_insert(email, &mailmap)->util = name;
}
fclose(f);
return 0;
}
static int map_email(char *email, char *name, int maxlen)
{
char *p;
struct path_list_item *item;
/* autocomplete common developers */
p = strchr(email, '>');
if (!p)
return 0;
*p = '\0';
/* downcase the email address */
for (p = email; *p; p++)
*p = tolower(*p);
item = path_list_lookup(email, &mailmap);
if (item != NULL) {
const char *realname = (const char *)item->util;
strncpy(name, realname, maxlen);
return 1;
}
return 0;
}
static void insert_author_oneline(struct path_list *list,
const char *author, int authorlen,
const char *oneline, int onelinelen)
{
const char *dot3 = common_repo_prefix;
char *buffer, *p;
struct path_list_item *item;
struct path_list *onelines;
while (authorlen > 0 && isspace(author[authorlen - 1]))
authorlen--;
buffer = xmalloc(authorlen + 1);
memcpy(buffer, author, authorlen);
buffer[authorlen] = '\0';
item = path_list_insert(buffer, list);
if (item->util == NULL)
item->util = xcalloc(1, sizeof(struct path_list));
else
free(buffer);
if (!prefixcmp(oneline, "[PATCH")) {
char *eob = strchr(oneline, ']');
if (eob) {
while (isspace(eob[1]) && eob[1] != '\n')
eob++;
if (eob - oneline < onelinelen) {
onelinelen -= eob - oneline;
oneline = eob;
}
}
}
while (onelinelen > 0 && isspace(oneline[0])) {
oneline++;
onelinelen--;
}
while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
onelinelen--;
buffer = xmalloc(onelinelen + 1);
memcpy(buffer, oneline, onelinelen);
buffer[onelinelen] = '\0';
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);
}
}
}
onelines = item->util;
if (onelines->nr >= onelines->alloc) {
onelines->alloc = alloc_nr(onelines->nr);
onelines->items = xrealloc(onelines->items,
onelines->alloc
* sizeof(struct path_list_item));
}
onelines->items[onelines->nr].util = NULL;
onelines->items[onelines->nr++].path = buffer;
}
static void read_from_stdin(struct path_list *list)
{
char buffer[1024];
while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
char *bob;
if ((buffer[0] == 'A' || buffer[0] == 'a') &&
!prefixcmp(buffer + 1, "uthor: ") &&
(bob = strchr(buffer + 7, '<')) != NULL) {
char buffer2[1024], offset = 0;
if (map_email(bob + 1, buffer, sizeof(buffer)))
bob = buffer + strlen(buffer);
else {
offset = 8;
while (buffer + offset < bob &&
isspace(bob[-1]))
bob--;
}
while (fgets(buffer2, sizeof(buffer2), stdin) &&
buffer2[0] != '\n')
; /* chomp input */
if (fgets(buffer2, sizeof(buffer2), stdin)) {
int l2 = strlen(buffer2);
int i;
for (i = 0; i < l2; i++)
if (!isspace(buffer2[i]))
break;
insert_author_oneline(list,
buffer + offset,
bob - buffer - offset,
buffer2 + i, l2 - i);
}
}
}
}
static void get_from_rev(struct rev_info *rev, struct path_list *list)
{
char scratch[1024];
struct commit *commit;
prepare_revision_walk(rev);
while ((commit = get_revision(rev)) != NULL) {
const char *author = NULL, *oneline, *buffer;
int authorlen = authorlen, onelinelen;
/* get author and oneline */
for (buffer = commit->buffer; buffer && *buffer != '\0' &&
*buffer != '\n'; ) {
const char *eol = strchr(buffer, '\n');
if (eol == NULL)
eol = buffer + strlen(buffer);
else
eol++;
if (!prefixcmp(buffer, "author ")) {
char *bracket = strchr(buffer, '<');
if (bracket == NULL || bracket > eol)
die("Invalid commit buffer: %s",
sha1_to_hex(commit->object.sha1));
if (map_email(bracket + 1, scratch,
sizeof(scratch))) {
author = scratch;
authorlen = strlen(scratch);
} else {
if (bracket[-1] == ' ')
bracket--;
author = buffer + 7;
authorlen = bracket - buffer - 7;
}
}
buffer = eol;
}
if (author == NULL)
die ("Missing author: %s",
sha1_to_hex(commit->object.sha1));
if (buffer == NULL || *buffer == '\0') {
oneline = "<none>";
onelinelen = sizeof(oneline) + 1;
} else {
char *eol;
oneline = buffer + 1;
eol = strchr(oneline, '\n');
if (eol == NULL)
onelinelen = strlen(oneline);
else
onelinelen = eol - oneline;
}
insert_author_oneline(list,
author, authorlen, oneline, onelinelen);
}
}
int cmd_shortlog(int argc, const char **argv, const char *prefix)
{
struct rev_info rev;
struct path_list list = { NULL, 0, 0, 1 };
int i, j, sort_by_number = 0, summary = 0;
/* since -n is a shadowed rev argument, parse our args first */
while (argc > 1) {
if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
sort_by_number = 1;
else if (!strcmp(argv[1], "-s") ||
!strcmp(argv[1], "--summary"))
summary = 1;
else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
usage(shortlog_usage);
else
break;
argv++;
argc--;
}
init_revisions(&rev, prefix);
argc = setup_revisions(argc, argv, &rev, NULL);
if (argc > 1)
die ("unrecognized argument: %s", argv[1]);
if (!access(".mailmap", R_OK))
read_mailmap(".mailmap");
if (rev.pending.nr == 0)
read_from_stdin(&list);
else
get_from_rev(&rev, &list);
if (sort_by_number)
qsort(list.items, list.nr, sizeof(struct path_list_item),
compare_by_number);
for (i = 0; i < list.nr; i++) {
struct path_list *onelines = list.items[i].util;
if (summary) {
printf("%s: %d\n", list.items[i].path, onelines->nr);
} else {
printf("%s (%d):\n", list.items[i].path, onelines->nr);
for (j = onelines->nr - 1; j >= 0; j--)
printf(" %s\n", onelines->items[j].path);
printf("\n");
}
onelines->strdup_paths = 1;
path_list_clear(onelines, 1);
free(onelines);
list.items[i].util = NULL;
}
list.strdup_paths = 1;
path_list_clear(&list, 1);
mailmap.strdup_paths = 1;
path_list_clear(&mailmap, 1);
return 0;
}