/* cmd-join-branch.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/bugs/exception.h"
#include "hackerlab/cmd/main.h"
#include "hackerlab/fs/file-names.h"
#include "hackerlab/fs/cwd.h"
#include "libfsutils/tmp-files.h"
#include "libfsutils/rmrf.h"
#include "libarch/namespace.h"
#include "libarch/project-tree.h"
#include "libarch/archive.h"
#include "libarch/build-revision.h"
#include "libarch/copy-project-tree.h"
#include "libarch/pristines.h"
#include "libarch/patch-logs.h"
#include "libarch/my.h"
#include "commands/cmd.h"
#include "commands/cmdutils.h"
#include "commands/join-branch.h"
#include "commands/replay.h"
#include "commands/version.h"



static t_uchar * usage = N_("[options] 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_("Operate on project tree in DIR (default `.')")) \
  OP (opt_dest, 0, "dest DEST", 1, \
      N_("Instead of modifying the project tree in-place,\n" \
      "make a copy of it to DEST and apply the result to that")) \
  OP (opt_unescaped, 0, "unescaped", 0, \
      N_("show filenames in unescaped form"))


t_uchar arch_cmd_join_branch_help[] = N_(
    "add a version as an ancestor of a project tree\n"
    "VERSION--base-0 must be a continuation (e.g. tag). The command replays \n"
    "the changeset for VERSION--base-0 in the project tree, which has the \n"
    "effect of adding the log for the branch (making the tag an ancestor of \n"
    "the resulting tree).\n");

enum options
{
  OPTS (OPT_ENUM)
};

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



int
arch_cmd_join_branch (t_uchar * program_name, int argc, char * argv[])
{
  int o;
  struct opt_parsed * option;
  t_uchar * default_archive = NULL;
  t_uchar * upon = NULL;
  t_uchar * dest = NULL;
  int escape_classes = arch_escape_classes;

  upon = 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_join_branch_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:
          {
            lim_free (0, default_archive);
            default_archive = str_save (0, option->arg_string);
            break;
          }

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

        case opt_dest:
          {
            lim_free (0, dest);
            dest = str_save (0, option->arg_string);
            break;
          }
        
        case opt_unescaped:
          {
            escape_classes = 0;
            break;
          }
        }
    }

  if (argc != 2)
    goto usage_error;

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

  {
    t_uchar * vsn_spec;
    t_uchar * archive = NULL;
    t_uchar * version = NULL;
    t_uchar * base0_revision = NULL;
    t_uchar * fqbase0 = NULL;
    t_uchar * supplied_spec = NULL;
    struct arch_archive * arch = NULL;
    arch_project_tree_t * upon_tree;

    upon_tree = arch_project_tree_new(talloc_context, upon);

    /* First, make sure we're in a project tree */
    if (! upon_tree->root)
      {
        safe_printfmt (2, _("%s: not in a project tree -- %s\n"),
                       argv[0], upon);
        exit (1);
      }

    /* Now lint the version */
    supplied_spec = argv[1];
    arch_project_tree_check_name (upon_tree, &arch, &vsn_spec, supplied_spec);
   

    if (!arch_valid_package_name (vsn_spec, arch_maybe_archive,
                                  arch_req_version, 0))
      {
        safe_printfmt (2, _("%s: invalid version name (%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);
    base0_revision = str_alloc_cat (0, version, "--base-0");
    fqbase0 = arch_fully_qualify (archive, base0_revision);

    if (!upon_tree->root)
      {
        safe_printfmt (2, "%s: not in a project tree -- %s\n",
                       argv[0], upon);
        exit (1);
      }

    if (arch_tree_has_log (upon_tree->root, archive, base0_revision))
      {
        safe_printfmt (2, _("%s: tree already has log for %s/%s\n"),
                       argv[0], archive, base0_revision);
        exit (1);
      }

    arch_check_for (arch, arch_req_patch_level, fqbase0);

    {
      enum arch_revision_type type;
      arch_patch_id * base = arch_patch_id_new_archive (arch->official_name, base0_revision);

      arch_revision_type (&type, 0, 0, arch, base);

      if (type != arch_continuation_revision)
        {
          safe_printfmt (2, _("%s: not a tag revision (%s/%s)\n"),
                         argv[0], archive, base0_revision);
          exit (1);
        }
      talloc_free (base);
    }


    if (dest)
      {
        safe_printfmt (1, _("* copying %s to %s\n"), upon, dest);
        safe_flush (1);
        arch_copy_project_tree (upon_tree, dest, 1, 1);
      }
    else
      dest = str_save (0, upon);

    arch_call_cmd (arch_cmd_replay, argv[0], "--dir", dest, fqbase0, ((escape_classes == 0) ? "--unescaped" : 0), 0);


    lim_free (0, archive);
    lim_free (0, version);
    lim_free (0, vsn_spec);
    lim_free (0, base0_revision);
    lim_free (0, fqbase0);
    arch_project_tree_delete (upon_tree);

    arch_archive_close (arch);
  }

  lim_free (0, upon);
  lim_free (0, dest);
  lim_free (0, default_archive);

  return 0;
}




/* tag: Tom Lord Wed Jun  4 18:23:19 2003 (cmd-join-branch.c)
 */