C++ ps_output::get_file方法代码示例

void resource_manager::print_header_comments(ps_output &out)
{
  for (resource *r = resource_list; r; r = r->next)
    if (r->type == RESOURCE_FONT && (r->flags & resource::FONT_NEEDED))
      supply_resource(r, 0, 0);
  print_resources_comment(resource::NEEDED, out.get_file());
  print_resources_comment(resource::SUPPLIED, out.get_file());
  print_language_level_comment(out.get_file());
  print_extensions_comment(out.get_file());
}

void resource_manager::import_file(const char *filename, ps_output &out)
{
  out.end_line();
  string name(filename);
  resource *r = lookup_resource(RESOURCE_FILE, name);
  supply_resource(r, -1, out.get_file(), 1);
}

void resource_manager::output_prolog(ps_output &out)
{
  FILE *outfp = out.get_file();
  out.end_line();
  char *path;
  if (!getenv("GROPS_PROLOGUE")) {
    string e = "GROPS_PROLOGUE";
    e += '=';
    e += GROPS_PROLOGUE;
    e += '\0';
    if (putenv(strsave(e.contents())))
      fatal("putenv failed");
  }
  char *prologue = getenv("GROPS_PROLOGUE");
  FILE *fp = font::open_file(prologue, &path);
  if (!fp)
    fatal("can't find `%1'", prologue);
  fputs("%%BeginResource: ", outfp);
  procset_resource->print_type_and_name(outfp);
  putc('\n', outfp);
  process_file(-1, fp, path, outfp);
  fclose(fp);
  a_delete path;
  fputs("%%EndResource\n", outfp);
}

void ps_printer::media_set()
{
  /*
   *  The setpagedevice implies an erasepage and initgraphics, and
   *  must thus precede any descriptions for a particular page.
   *
   *  NOTE:
   *  This does not work with ps2pdf when there are included eps
   *  segments that contain PageSize/setpagedevice.
   *  This might be a bug in ghostscript -- must be investigated.
   *  Using setpagedevice in an .eps is really the wrong concept, anyway.
   *
   *  NOTE:
   *  For the future, this is really the place to insert other
   *  media selection features, like:
   *    MediaColor
   *    MediaPosition
   *    MediaType
   *    MediaWeight
   *    MediaClass
   *    TraySwitch
   *    ManualFeed
   *    InsertSheet
   *    Duplex
   *    Collate
   *    ProcessColorModel
   *  etc.
   */
  if (!(broken_flags & (USE_PS_ADOBE_2_0|NO_PAPERSIZE))) { 
    out.begin_comment("BeginFeature:")
       .comment_arg("*PageSize")
       .comment_arg(media_name())
       .end_comment();
    int w = media_width();
    int h = media_height();
    if (w > 0 && h > 0)
      // warning to user is done elsewhere
      fprintf(out.get_file(),
	      "<< /PageSize [ %d %d ] /ImagingBBox null >> setpagedevice\n",
	      w, h);
    out.simple_comment("EndFeature");
  }
}

void resource_manager::document_setup(ps_output &out)
{
  int nranks = 0;
  resource *r;
  for (r = resource_list; r; r = r->next)
    if (r->rank >= nranks)
      nranks = r->rank + 1;
  if (nranks > 0) {
    // Sort resource_list in reverse order of rank.
    Presource *head = new Presource[nranks + 1];
    Presource **tail = new Presource *[nranks + 1];
    int i;
    for (i = 0; i < nranks + 1; i++) {
      head[i] = 0;
      tail[i] = &head[i];
    }
    for (r = resource_list; r; r = r->next) {
      i = r->rank < 0 ? 0 : r->rank + 1;
      *tail[i] = r;
      tail[i] = &(*tail[i])->next;
    }
    resource_list = 0;
    for (i = 0; i < nranks + 1; i++)
      if (head[i]) {
	*tail[i] = resource_list;
	resource_list = head[i];
      }
    a_delete head;
    a_delete tail;
    // check it
    for (r = resource_list; r; r = r->next)
      if (r->next)
	assert(r->rank >= r->next->rank);
    for (r = resource_list; r; r = r->next)
      if (r->type == RESOURCE_FONT && r->rank >= 0)
	supply_resource(r, -1, out.get_file());
  }
}