/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * 
 * The "License" shall be the Mozilla Public License Version 1.1, except
 * Sections 6.2 and 11, but with the addition of the below defined Section 14.
 * You may obtain a copy of the Mozilla Public License Version 1.1 at
 * <http://www.mozilla.org/MPL/>. The contents of this file are subject to the
 * License; you may not use this file except in compliance with the License.
 * 
 * Section 14: MISCELLANEOUS.
 * This License represents the complete agreement concerning subject matter
 * hereof. If any provision of this License is held to be unenforceable, such
 * provision shall be reformed only to the extent necessary to make it
 * enforceable. This License shall be governed by German law provisions. Any
 * litigation relating to this License shall be subject to German jurisdiction.
 * 
 * Once Covered Code has been published under a particular version of the
 * License, You may always continue to use it under the terms of that version.
 + The Initial Developer and no one else has the right to modify the terms
 * applicable to Covered Code created under this License.
 * (End of Section 14)
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * The Original Code is the Text to HTML converter code.
 * 
 * The Initial Developer of the Original Code is Ben Bucksch
 * <http://www.bucksch.org>. Portions created by Ben Bucksch are Copyright
 * (C) 1999, 2000 Ben Bucksch. All Rights Reserved.
 * 
 * Contributor(s):
 */

/**
  Description: Currently only functions to enhance plain text with HTML tags.
  <p>
  Wrapper class for various parsing routines, that convert plain text to HTML.
  They try to recognize cites, URLs, plain text formattting like *bold* etc.
  See <http://www.bucksch.org/1/projects/mozilla/16507/> for a description.
 */

#include "nsIStreamConverter.idl"
#include "nsrootidl.idl"

%{C++
// {77c0e42a-1dd2-11b2-8ebf-edc6606f2f4b}
#define MOZITXTTOHTMLCONV_CID \
    { 0x77c0e42a, 0x1dd2, 0x11b2, \
    { 0x8e, 0xbf, 0xed, 0xc6, 0x60, 0x6f, 0x2f, 0x4b } }
	
#define MOZ_TXTTOHTMLCONV_CONTRACTID \
  "@mozilla.org/txttohtmlconv;1"

%}

[scriptable, uuid(77c0e42a-1dd2-11b2-8ebf-edc6606f2f4b)]
interface mozITXTToHTMLConv : nsIStreamConverter {
  const unsigned long kEntities = 0;  // just convert < & > to &lt; &amp; and &gt;
  const unsigned long kURLs = 1 << 1;
  const unsigned long kGlyphSubstitution = 1 << 2;  // Smilies, &reg; etc.
  const unsigned long kStructPhrase = 1 << 3;       // E.g. *bold* -> <strong>

/**
  @param text: plain text to scan. May be a line, paragraph (recommended)
               or just a substring.<p>
               Must be non-escaped, pure unicode.<p>
               <em>Note:</em> ScanTXT(a, o) + ScanTXT(b, o) may be !=
               Scan(a + b, o)
  @param whattodo: Bitfield describing the modes of operation
  @result      "<", ">" and "&" are escaped and HTML tags are inserted where
               appropriate.
 */
  wstring   scanTXT([const] in wstring text, in unsigned long whattodo);

/**
  Adds additional formatting to user edited text, that the user was too lazy
  or "unknowledged" (DELETEME: is that a word?) to make.
  <p>
  <em>Note:</em> Don't use kGlyphSubstitution with this function. This option
  generates tags, that are unuseable for UAs other than Mozilla. This would
  be a data loss bug.

  @param text: HTML source to scan. May be a line, paragraph (recommended)
               or just a substring.<p>
               Must be correct HTML. "<", ">" and "&" must be escaped,
               other chars must be pure unicode.<p>
               <em>Note:</em> ScanTXT(a, o) + ScanTXT(b, o) may be !=
               Scan(a + b, o)
  @param whattodo: Bitfield describing the modes of operation
  @result      Additional HTML tags are inserted where appropriate.
 */
  wstring   scanHTML([const] in wstring text, in unsigned long whattodo);

/**
  @param line: line in original msg, possibly starting starting with
               txt quote tags like ">"
  @param logLineStart: pos in line, where the real content (logical line)
               begins, i.e. pos after all txt quote tags.
               E.g. position of "t" in "> > text".
               Initial value must be 0, unless line is not real line.
  @return      Cite Level, i.e. number of txt quote tags found, i.e. number of
               nested quotes.
 */
  unsigned long   citeLevelTXT([const] in wstring line,
                               out unsigned long logLineStart);
};
