/* cmd-log-for-merge.c
 *
 ****************************************************************
 * Copyright (C) 2003 Tom Lord
 *
 * See the file "COPYING" for further information about
 * the copyright and warranty status of this work.
 */


#include "config-options.h"
#include "po/gettext.h"
#include "hackerlab/cmd/main.h"
#include "libfsutils/file-contents.h"
#include "libarch/namespace.h"
#include "libarch/project-tree.h"
#include "libarch/merge-points.h"
#include "libarch/patch-logs.h"
#include "commands/log-for-merge.h"
#include "commands/version.h"



static t_uchar * usage = N_("[options] [[archive]/version]");

#define OPTS(OP) \
  OP (opt_help_msg, "h", "help", 0, \
      N_("Display a help message and exit.")) \
  OP (opt_long_help, "H", 0, 0, \
      N_("Display a verbose help message and exit.")) \
  OP (opt_version, "V", "version", 0, \
      N_("Display a release identifier string\n" \
      "and exit.")) \
  OP (opt_archive, "A", "archive", 1, \
      N_("Override `my-default-archive'")) \
  OP (opt_dir, "d", "dir DIR", 1, \
      N_("cd to DIR first")) \
  OP (opt_reverse, "r", "reverse", 0, \
      N_("sort from newest to oldest"))


t_uchar arch_cmd_log_for_merge_help[] = N_("generate a log entry body for a merge\n"
                                         "Generate a log entry body describing a merge into VERSION.\n");

enum options
{
  OPTS (OPT_ENUM)
};

static struct opt_desc opts[] =
{
  OPTS (OPT_DESC)
    {-1, 0, 0, 0, 0}
};



int
arch_cmd_log_for_merge (t_uchar * program_name, int argc, char * argv[])
{
  int o;
  struct opt_parsed * option;
  t_uchar * default_archive = 0;
  char * dir = 0;
  int reverse = 0;

  default_archive = 0;
  dir = str_save (0, ".");

  safe_buffer_fd (1, 0, O_WRONLY, 0);

  option = 0;

  while (1)
    {
      o = opt_standard (lim_use_must_malloc, &option, opts, &argc, argv, program_name, usage, libarch_version_string, arch_cmd_log_for_merge_help, opt_help_msg, opt_long_help, opt_version);
      if (o == opt_none)
        break;
      switch (o)
        {
        default:
          safe_printfmt (2, "unhandled option `%s'\n", option->opt_string);
          panic ("internal error parsing arguments");

        usage_error:
          opt_usage (2, argv[0], program_name, usage, 1);
          exit (1);

          /* bogus_arg: */
          safe_printfmt (2, "ill-formed argument for `%s' (`%s')\n", option->opt_string, option->arg_string);
          goto usage_error;

        case opt_archive:
          {
            default_archive = str_save (0, option->arg_string);
            break;
          }

        case opt_dir:
          {
            dir = str_save (0, option->arg_string);
            break;
          }

        case opt_reverse:
          {
            reverse = 1;
            break;
          }
        }
    }

  if (argc > 2)
    goto usage_error;

  {
    t_uchar * tree_root = 0;
    t_uchar * vsn_spec = 0;
    t_uchar * archive = 0;
    t_uchar * version = 0;
    t_uchar * msg = 0;

    tree_root = arch_tree_root (0, dir, 0);

    if (!tree_root)
      {
        safe_printfmt (2, "%s: not in project tree (%s)\n", argv[0], dir);
        exit (1);
      }

    if (argc == 2)
      {
        vsn_spec = str_save (0, argv[1]);
      }
    else
      {
        vsn_spec = arch_tree_version (tree_root);

        if (!vsn_spec)
          {
            safe_printfmt (2, "%s: no default tree version\n  tree: %s\n",
                           argv[0], tree_root);
            exit (1);
          }
      }

    if (default_archive)
      {
        if (!arch_valid_archive_name (default_archive))
          {
            safe_printfmt (2, "%s: invalid archive name (%s)\n",
                           argv[0], default_archive);
            exit (1);
          }
      }

    if (!arch_valid_package_name (vsn_spec, arch_maybe_archive, arch_req_version, 0))
      {
        safe_printfmt (2, "%s: invalid version spec (%s)\n",
                       argv[0], vsn_spec);
        exit (1);
      }

    archive = arch_parse_package_name (arch_ret_archive, default_archive, vsn_spec);
    version = arch_parse_package_name (arch_ret_non_archive, 0, vsn_spec);

    msg = arch_log_for_merge (tree_root, archive, version, reverse);
    safe_printfmt (1, "%s", msg);

    lim_free (0, tree_root);
    lim_free (0, vsn_spec);
    lim_free (0, archive);
    lim_free (0, version);
    lim_free (0, msg);
  }

  lim_free (0, default_archive);
  lim_free (0, dir);

  return 0;
}




/* tag: Tom Lord Tue Jun  3 02:07:41 2003 (log-for-merge.c)
 */