netscape-revival

lib/libmime2/mimemapl.c

/* -*- Mode: C; tab-width: 4 -*-
  mimemapl.c --- definition of the MimeMultipartAppleDouble class (see mimei.h)
   Copyright © 1997 Netscape Communications Corporation, all rights reserved.
   Created: Jamie Zawinski <jwz@netscape.com>, 15-May-96.
 */

#include "mimemapl.h"
#include "xpgetstr.h"

#define MIME_SUPERCLASS mimeMultipartClass
MimeDefClass(MimeMultipartAppleDouble, MimeMultipartAppleDoubleClass,
			 mimeMultipartAppleDoubleClass, &MIME_SUPERCLASS);

extern int MK_MSG_ATTACHMENT;

static int MimeMultipartAppleDouble_parse_begin (MimeObject *);
static XP_Bool MimeMultipartAppleDouble_output_child_p(MimeObject *,
													   MimeObject *);

static int
MimeMultipartAppleDoubleClassInitialize(MimeMultipartAppleDoubleClass *class)
{
  MimeObjectClass    *oclass = (MimeObjectClass *)    class;
  MimeMultipartClass *mclass = (MimeMultipartClass *) class;

  XP_ASSERT(!oclass->class_initialized);
  oclass->parse_begin    = MimeMultipartAppleDouble_parse_begin;
  mclass->output_child_p = MimeMultipartAppleDouble_output_child_p;
  return 0;
}

static int
MimeMultipartAppleDouble_parse_begin (MimeObject *obj)
{
  /* #### This method is identical to MimeExternalObject_parse_begin
	 which kinda sucks...
   */
  int status;

  status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_begin(obj);
  if (status < 0) return status;

#ifdef MIME_LEAF_TEXT
  /* If we're extracting leaves, shouldn't have made this class. */
  XP_ASSERT(!obj->options || !obj->options->write_leaf_p);
#endif /* MIME_LEAF_TEXT */

  /* If we're writing this object, and we're doing it in raw form, then
	 now is the time to inform the backend what the type of this data is.
   */
  if (obj->output_p &&
	  obj->options &&
	  !obj->options->write_html_p &&
	  !obj->options->state->first_data_written_p)
	{
	  status = MimeObject_output_init(obj, 0);
	  if (status < 0) return status;
	  XP_ASSERT(obj->options->state->first_data_written_p);
	}

  /* If we're writing this object as HTML, then emit a link for the
	 multipart/appledouble part (both links) that looks just like the
	 links that MimeExternalObject emits for external leaf parts.
   */
  if (obj->options &&
	  obj->output_p &&
	  obj->options->write_html_p &&
	  obj->options->output_fn)
	{
	  MimeDisplayOptions newopt = *obj->options;  /* copy it */
	  char *id = 0;
	  char *id_url = 0;
	  XP_Bool all_headers_p = obj->options->headers == MimeHeadersAll;

	  id = mime_part_address (obj);
	  if (! id) return MK_OUT_OF_MEMORY;

      if (obj->options && obj->options->url)
		{
		  const char *url = obj->options->url;
		  id_url = mime_set_url_part(url, id, TRUE);
		  if (!id_url)
			{
			  XP_FREE(id);
			  return MK_OUT_OF_MEMORY;
			}
		}

	  if (!XP_STRCMP (id, "0"))
		{
		  XP_FREE(id);
		  id = XP_STRDUP(XP_GetString(MK_MSG_ATTACHMENT));
		}
	  else
		{
		  const char *p = "Part ";  /* #### i18n */
		  char *s = (char *)XP_ALLOC(XP_STRLEN(p) + XP_STRLEN(id) + 1);
		  if (!s)
			{
			  XP_FREE(id);
			  XP_FREE(id_url);
			  return MK_OUT_OF_MEMORY;
			}
		  XP_STRCPY(s, p);
		  XP_STRCAT(s, id);
		  XP_FREE(id);
		  id = s;
		}

	  if (all_headers_p &&
		  /* Don't bother showing all headers on this part if it's the only
			 part in the message: in that case, we've already shown these
			 headers. */
		  obj->options->state &&
		  obj->options->state->root == obj->parent)
		all_headers_p = FALSE;

	  newopt.fancy_headers_p = TRUE;
	  newopt.headers = (all_headers_p ? MimeHeadersAll : MimeHeadersSome);

	  {
		char p[] = "<P>";
		status = MimeObject_write(obj, p, 3, FALSE);
		if (status < 0) goto FAIL;
	  }

	  status = MimeHeaders_write_attachment_box (obj->headers, &newopt,
												 obj->content_type,
												 obj->encoding,
												 id, id_url, 0);
	  if (status < 0) goto FAIL;

	  /* No <P> after the first attachment-box in an AppleDouble, to keep
		 them closer together. */

	FAIL:
	  FREEIF(id);
	  FREEIF(id_url);
	  if (status < 0) return status;
	}

  return 0;
}

static XP_Bool
MimeMultipartAppleDouble_output_child_p(MimeObject *obj, MimeObject *child)
{
  /* If this is the first child, and it's an application/applefile, then
	 don't emit a link for it.  (There *should* be only two children, and
	 the first one should always be an application/applefile.)
   */
  MimeContainer *cont = (MimeContainer *) obj;
  if (obj->output_p &&
	  obj->options &&
	  obj->options->write_html_p &&
	  cont->nchildren >= 1 &&
	  cont->children[0] == child &&
	  child->content_type &&
	  !strcasecomp(child->content_type, APPLICATION_APPLEFILE))
	return FALSE;
  else
	return TRUE;
}