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builtin: add git-check-mailmap command

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Introduce command check-mailmap, similar to check-attr and check-ignore,
which allows direct testing of .mailmap configuration.

As plumbing accessible to scripts and other porcelain, check-mailmap
publishes the stable, well-tested .mailmap functionality employed by
built-in Git commands.  Consequently, script authors need not
re-implement .mailmap functionality manually, thus avoiding potential
quirks and behavioral differences.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Eric Sunshine
2013-07-12 20:53:10 -04:00
committed by Junio C Hamano
parent 7a3187eb78
commit 226ad3482a
8 changed files with 119 additions and 0 deletions
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66
builtin/check-mailmap.c Normal file
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#include "builtin.h"
#include "mailmap.h"
#include "parse-options.h"
#include "string-list.h"
static int use_stdin;
static const char * const check_mailmap_usage[] = {
N_("git check-mailmap [options] <contact>..."),
NULL
};
static const struct option check_mailmap_options[] = {
OPT_BOOL(0, "stdin", &use_stdin, N_("also read contacts from stdin")),
OPT_END()
};
static void check_mailmap(struct string_list *mailmap, const char *contact)
{
const char *name, *mail;
size_t namelen, maillen;
struct ident_split ident;
if (split_ident_line(&ident, contact, strlen(contact)))
die(_("unable to parse contact: %s"), contact);
name = ident.name_begin;
namelen = ident.name_end - ident.name_begin;
mail = ident.mail_begin;
maillen = ident.mail_end - ident.mail_begin;
map_user(mailmap, &mail, &maillen, &name, &namelen);
if (namelen)
printf("%.*s ", (int)namelen, name);
printf("<%.*s>\n", (int)maillen, mail);
}
int cmd_check_mailmap(int argc, const char **argv, const char *prefix)
{
int i;
struct string_list mailmap = STRING_LIST_INIT_NODUP;
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, check_mailmap_options,
check_mailmap_usage, 0);
if (argc == 0 && !use_stdin)
die(_("no contacts specified"));
read_mailmap(&mailmap, NULL);
for (i = 0; i < argc; ++i)
check_mailmap(&mailmap, argv[i]);
maybe_flush_or_die(stdout, "stdout");
if (use_stdin) {
struct strbuf buf = STRBUF_INIT;
while (strbuf_getline(&buf, stdin, '\n') != EOF) {
check_mailmap(&mailmap, buf.buf);
maybe_flush_or_die(stdout, "stdout");
}
strbuf_release(&buf);
}
clear_mailmap(&mailmap);
return 0;
}