git/builtin-shortlog.c
Junio C Hamano cc44c7655f Mechanical conversion to use prefixcmp()
This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily.  Leftover from this will be fixed in a separate step, including
idiotic conversions like

    if (!strncmp("foo", arg, 3))

  =>

    if (!(-prefixcmp(arg, "foo")))

This was done by using this script in px.perl

   #!/usr/bin/perl -i.bak -p
   if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
           s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
   }
   if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
           s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
   }

and running:

   $ git grep -l strncmp -- '*.c' | xargs perl px.perl

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-20 22:03:15 -08:00

342 lines
7.9 KiB
C

#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) {
char *author = NULL, *oneline, *buffer;
int authorlen = authorlen, onelinelen;
/* get author and oneline */
for (buffer = commit->buffer; buffer && *buffer != '\0' &&
*buffer != '\n'; ) {
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;
}