/* cmd-archive-snapshot.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 "libarch/namespace.h"
#include "libarch/my.h"
#include "libarch/archive-snapshot.h"
#include "commands/cmd.h"
#include "commands/archive-snapshot.h"
#include "commands/version.h"



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

#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."))


t_uchar arch_cmd_archive_snapshot_help[] = N_(
        "update an archive snapshot\n"
        "Update the directory DIR with a \"snapshot\" of of an archive (or "
        "the part of the archive indicated by LIMIT\n"
        "\n"
        "For each archive snapshotted, DIR will contain a file and "
        "subdirectory (where $ARCH is the name of the archive):\n"
        "\n"
        "    ./$ARCH.added\n"
        "    ./$ARCH/\n"
        "\n"
        "Similarly, for each category snapshotted, DIR will contain:\n"
        "\n"
        "    ./$ARCH/$CAT.added\n"
        "    ./$ARCH/$CAT/\n"
        "\n"
        "and so on, recursively, for branches and versions.\n"
        "\n"
        "For each revision, the snapshot contains:\n"
        "\n"
        "    ./$ARCH/$CAT/$BRANCH/$VERSION/$REVISION.added\n"
        "\n"
        "and that file contains a copy of the patch log entry for that "
        "revision.\n"
        "\n"
        "Snapshots can be used in combination with other tools (\'make\' is "
        "suggested) to trigger one-time events in response to new additions "
        "to an archive.\n");

enum options
{
  OPTS (OPT_ENUM)
};

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



int
arch_cmd_archive_snapshot (t_uchar * program_name, int argc, char * argv[])
{
  int o;
  struct opt_parsed * option;

  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_archive_snapshot_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;

        }
    }

  if ((argc < 2) || (argc > 3))
    goto usage_error;

  {
    t_uchar * dir;
    t_uchar * limit_spec;
    t_uchar * limit = 0;
    struct arch_archive * arch = 0;

    dir = argv[1];

    if (argc == 2)
      {
	limit_spec = arch_my_default_archive (NULL);
      }
    else
      {
        limit_spec = str_save (0, argv[2]);
      }
      {
	t_uchar * namespace = NULL;
	arch = arch_archive_connect_branch (limit_spec, &namespace);
	if (!arch)
	  {
	    safe_printfmt (2, "cannot connect to archive for limit '%s'\n", limit_spec);
	    exit (2);
	  }

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

        limit = arch_parse_package_name (arch_ret_non_archive, 0, namespace);
	lim_free (0, namespace);
      }

    archive_snapshot (arch, limit, dir);

    arch_archive_close (arch);

    lim_free (0, limit);
    lim_free (0, limit_spec);
  }

  return 0;
}




/* tag: Tom Lord Mon Jun  9 01:39:26 2003 (cmd-archive-snapshot.c)
 */