/* redo-changes.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 "hackerlab/cmd/main.h"
#include "hackerlab/fs/file-names.h"
#include "file-utils/libfsutils/rmrf.h"
#include "file-utils/libarch/namespace.h"
#include "file-utils/libarch/project-tree.h"
#include "file-utils/libarch/patch-logs.h"
#include "file-utils/libarch/local-cache.h"
#include "file-utils/libarch/proj-tree-lint.h"
#include "file-utils/libarch/undo.h"
#include "file-utils/libarch/apply-changeset.h"


/* __STDC__ prototypes for static functions */
static void redo_changes_callback (void * ign, char * fmt, va_list ap);



static t_uchar * program_name = "redo-changes";
static t_uchar * usage = "[options]";
static t_uchar * version_string = (cfg__std__package " from regexps.com\n"
				   "\n"
				   "Copyright 2003 Tom Lord\n"
				   "\n"
				   "This is free software; see the source for copying conditions.\n"
				   "There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n"
				   "PARTICULAR PURPOSE.\n"
				   "\n"
				   "Report bugs to " cfg__file_utils_bug_mail ".\n"
				   "\n");

#define OPTS(OP, OP2) \
  OP (opt_help_msg, "h", "help", 0, \
      "Display a help message and exit.") \
  OP (opt_long_help, "H", 0, 0, \
      "Display a verbose help message and exit.") \
  OP (opt_version, "V", "version", 0, \
      "Display a release identifier string") \
  OP2 (opt_version, 0, 0, 0, "and exit.") \
  OP (opt_dir, "d", "dir DIR", 1, \
      "cd to DIR first") \
  OP (opt_patch_dir, "p", "patch DIR", 1, \
      "use the changeset in DIR") \
  OP (opt_keep, "k", "keep", 0, \
      "do not delete the patch") \
  OP (opt_quiet, "q", "quiet", 0, \
      "no progress reports while computing changeset")

static t_uchar long_help[] = ("compare a project tree to a pristine or library revision\n");

enum options
{
  OPTS (OPT_ENUM, OPT_IGN)  
};

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



int
main (int argc, char * argv[])
{
  int o;
  struct opt_parsed * option;
  t_uchar * dir = 0;
  t_uchar * patch = 0;
  int quiet = 0;
  int keep = 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, version_string, long_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_dir:
          {
            lim_free (0, dir);
            dir = str_save (0, option->arg_string);
            break;
          }

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

        case opt_keep:
          {
            keep = 1;
            break;
          }

        case opt_quiet:
          {
            quiet = 1;
            break;
          }
	}
    }

  if (argc != 1)
    goto usage_error;

  {
    t_uchar * tree_root = 0;

    tree_root = arch_tree_root (0, dir, 0);

    if (!tree_root)
      {
        safe_printfmt (2, "redo-changes: not in a project tree\n  dir: %s\n", dir);
        exit (2);
      }


    if (!patch)
      {
        patch = arch_latest_undo_changeset (0, tree_root);
        if (!patch)
          {
            safe_printfmt (2, "redo-changes: no changeset from undo-changes found\n  dir: %s\n", tree_root);
            exit (2);
          }
      }


    {
      struct arch_tree_lint_result * lint = 0;

      if (!quiet)
        safe_printfmt (1, "* linting the source tree\n");
      lint = arch_tree_lint (tree_root);
      if (arch_print_tree_lint_report ((quiet ? 2 : 1), lint))
        {
          exit (1);
        }
    }

    {
      struct arch_apply_changeset_report report = {0, };

      if (!quiet)
        {
          report.callback = redo_changes_callback;
          report.thunk = (void *)1;
        }

      arch_apply_changeset (&report, patch, tree_root, arch_unspecified_tagging, 0);


      if (!keep)
        rmrf_file (patch);

      arch_free_apply_changeset_report_data (&report);
    }

    lim_free (0, tree_root);
  }


  lim_free (0, dir);
  lim_free (0, patch);

  return 0;
}



static void
redo_changes_callback (void * ign, char * fmt, va_list ap)
{
  safe_printfmt_va_list (1, fmt, ap);
  safe_flush (1);
}



/* tag: Tom Lord Thu May 29 19:59:38 2003 (redo-changes.c)
 */
