Fossil

/*
** Given the abbreviated UUID name of a version, load the content of that
** version in the VFILE table.  Return the VID for the version.
**
** If anything goes wrong, panic.
*/
int load_vfile(const char *zName, int forceMissingFlag){
  Blob uuid;
  int vid;

  blob_init(&uuid, zName, -1);
  if( name_to_uuid(&uuid, 1, "ci") ){
    fossil_fatal(g.zErrMsg);
  }
  vid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &uuid);
  if( vid==0 ){
    fossil_fatal("no such check-in: %s", g.argv[2]);
  }
  if( !is_a_version(vid) ){
    fossil_fatal("object [%.10s] is not a check-in", blob_str(&uuid));
  }
  if( load_vfile_from_rid(vid) && !forceMissingFlag ){
    fossil_fatal("missing content, unable to checkout");
  };
  return vid;
}

/*
** Set or clear the vfile.isexe flag for a file.
*/
static void set_or_clear_isexe(const char *zFilename, int vid, int onoff){

** leaves files on disk unchanged, except the manifest and manifest.uuid
** files.
**
** The --latest flag can be used in place of VERSION to checkout the
** latest version in the repository.
**
** Options:
**    --force           Ignore edited files in the current checkout
**    --keep            Only update the manifest and manifest.uuid files
**    --force-missing   Force checkout even if content is missing
**
** See also: update
*/
void checkout_cmd(void){
  int forceFlag;                 /* Force checkout even if edits exist */
  int forceMissingFlag;          /* Force checkout even if missing content */
  int keepFlag;                  /* Do not change any files on disk */
  int latestFlag;                /* Checkout the latest version */
  char *zVers;                   /* Version to checkout */
  int promptFlag;                /* True to prompt before overwriting */
  int vid, prior;
  Blob cksum1, cksum1b, cksum2;

  db_must_be_within_tree();
  db_begin_transaction();
  forceFlag = find_option("force","f",0)!=0;
  forceMissingFlag = find_option("force-missing",0,0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  latestFlag = find_option("latest",0,0)!=0;
  promptFlag = find_option("prompt",0,0)!=0 || forceFlag==0;
  if( (latestFlag!=0 && g.argc!=2) || (latestFlag==0 && g.argc!=3) ){
     usage("VERSION|--latest ?--force? ?--keep?");
  }
  if( !forceFlag && unsaved_changes(0) ){

    }
    if( zVers==0 ){
      return;
    }
  }else{
    zVers = g.argv[2];
  }
  vid = load_vfile(zVers, forceMissingFlag);
  if( prior==vid ){
    return;
  }
  if( !keepFlag ){
    uncheckout(prior);
  }
  db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);

** Open a connection to the local repository in FILENAME.  A checkout
** for the repository is created with its root at the working directory.
** If VERSION is specified then that version is checked out.  Otherwise
** the latest version is checked out.  No files other than "manifest"
** and "manifest.uuid" are modified if the --keep option is present.
**
** Options:
**   --empty           Initialize checkout as being empty, but still connected
**                     with the local repository. If you commit this checkout,
**                     it will become a new "initial" commit in the repository.
**   --keep            Only modify the manifest and manifest.uuid files
**   --nested          Allow opening a repository inside an opened checkout
**   --force-missing   Force opening a repository with missing content
**
** See also: close
*/
void cmd_open(void){
  int emptyFlag;
  int keepFlag;
  int forceMissingFlag;
  int allowNested;
  char **oldArgv;
  int oldArgc;
  static char *azNewArgv[] = { 0, "checkout", "--prompt", 0, 0, 0 };

  url_proxy_options();
  emptyFlag = find_option("empty",0,0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  forceMissingFlag = find_option("force-missing",0,0)!=0;
  allowNested = find_option("nested",0,0)!=0;
  if( g.argc!=3 && g.argc!=4 ){
    usage("REPOSITORY-FILENAME ?VERSION?");
  }
  if( !allowNested && db_open_local(0) ){
    fossil_fatal("already within an open tree rooted at %s", g.zLocalRoot);
  }

      azNewArgv[g.argc-1] = "--latest";
    }else{
      azNewArgv[g.argc-1] = db_get("main-branch", "trunk");
    }
    if( keepFlag ){
      azNewArgv[g.argc++] = "--keep";
    }
    if( forceMissingFlag ){
      azNewArgv[g.argc++] = "--force-missing";
    }
    checkout_cmd();
  }
  g.argc = 2;
  info_cmd();
}

/*