#include "builtin.h"

#include "config.h"

#include "gettext.h"

#include "ident.h"

#include "mailmap.h"

#include "parse-options.h"

#include "strbuf.h"

#include "string-list.h"

#include "write-or-die.h"

static int use_stdin;

static const char *mailmap_file, *mailmap_blob;

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_FILENAME(0, "mailmap-file", &mailmap_file, N_("read additional mailmap entries from file")),

  OPT_STRING(0, "mailmap-blob", &mailmap_blob, N_("blob"), N_("read additional mailmap entries from blob")),

  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))) {

    name = ident.name_begin;

    namelen = ident.name_end - ident.name_begin;

    mail = ident.mail_begin;

    maillen = ident.mail_end - ident.mail_begin;

  } else {

    name = NULL;

    namelen = 0;

    mail = contact;

    maillen = strlen(contact);

  }

  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);

  if (mailmap_blob)

    read_mailmap_blob(&mailmap, mailmap_blob);

  if (mailmap_file)

    read_mailmap_file(&mailmap, mailmap_file, 0);

  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_lf(&buf, stdin) != EOF) {

      check_mailmap(&mailmap, buf.buf);

      maybe_flush_or_die(stdout, "stdout");

    }

    strbuf_release(&buf);

  }

  clear_mailmap(&mailmap);

  return 0;

}