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359 lines
11 KiB
C
359 lines
11 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* mimetric.c --- definition of the MimeInlineTextRichtext class (see mimei.h)
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Created: Jamie Zawinski <jwz@netscape.com>, 15-May-96.
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*/
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#include "mimetric.h"
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#define MIME_SUPERCLASS mimeInlineTextClass
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MimeDefClass(MimeInlineTextRichtext, MimeInlineTextRichtextClass,
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mimeInlineTextRichtextClass, &MIME_SUPERCLASS);
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static int MimeInlineTextRichtext_parse_line (char *, int32, MimeObject *);
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static int MimeInlineTextRichtext_parse_begin (MimeObject *);
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static int MimeInlineTextRichtext_parse_eof (MimeObject *, XP_Bool);
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static int
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MimeInlineTextRichtextClassInitialize(MimeInlineTextRichtextClass *class)
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{
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MimeObjectClass *oclass = (MimeObjectClass *) class;
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XP_ASSERT(!oclass->class_initialized);
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oclass->parse_begin = MimeInlineTextRichtext_parse_begin;
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oclass->parse_line = MimeInlineTextRichtext_parse_line;
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oclass->parse_eof = MimeInlineTextRichtext_parse_eof;
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return 0;
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}
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/* This function has this clunky interface because it needs to be called
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from outside this module (no MimeObject, etc.)
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*/
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int
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MimeRichtextConvert (char *line, int32 length,
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int (*output_fn) (char *buf, int32 size, void *closure),
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void *closure,
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char **obufferP,
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int32 *obuffer_sizeP,
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XP_Bool enriched_p)
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{
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/* RFC 1341 (the original MIME spec) defined text/richtext.
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RFC 1563 superceded text/richtext with text/enriched.
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The changes from text/richtext to text/enriched are:
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- CRLF semantics are different
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- << maps to <
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- These tags were added:
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<VERBATIM>, <NOFILL>, <PARAM>, <FLUSHBOTH>
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- These tags were removed:
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<COMMENT>, <OUTDENT>, <OUTDENTRIGHT>, <SAMEPAGE>, <SUBSCRIPT>,
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<SUPERSCRIPT>, <HEADING>, <FOOTING>, <PARAGRAPH>, <SIGNATURE>,
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<LT>, <NL>, <NP>
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This method implements them both.
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draft-resnick-text-enriched-03.txt is a proposed update to 1563.
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- These tags were added:
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<FONTFAMILY>, <COLOR>, <PARAINDENT>, <LANG>.
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However, all of these rely on the magic <PARAM> tag, which we
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don't implement, so we're ignoring all of these.
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Interesting fact: it's by Peter W. Resnick from Qualcomm (Eudora).
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And it also says "It is fully expected that other text formatting
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standards like HTML and SGML will supplant text/enriched in
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Internet mail."
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*/
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int status = 0;
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char *out;
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const char *data_end;
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const char *last_end;
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const char *this_start;
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const char *this_end;
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int desired_size;
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desired_size = length * 4;
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if (desired_size >= *obuffer_sizeP)
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status = msg_GrowBuffer (desired_size, sizeof(char), 1024,
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obufferP, obuffer_sizeP);
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if (status < 0) return status;
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if (enriched_p)
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{
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for (this_start = line; this_start < line + length; this_start++)
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if (!XP_IS_SPACE (*this_start)) break;
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if (this_start >= line + length) /* blank line */
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{
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XP_STRCPY (*obufferP, "<BR>");
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return output_fn (*obufferP, XP_STRLEN(*obufferP), closure);
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}
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}
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out = *obufferP;
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*out = 0;
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data_end = line + length;
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last_end = line;
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this_start = last_end;
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this_end = this_start;
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while (this_end < data_end)
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{
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/* Skip forward to next special character. */
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while (this_start < data_end &&
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*this_start != '<' && *this_start != '>' &&
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*this_start != '&')
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this_start++;
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this_end = this_start;
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/* Skip to the end of the tag. */
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if (this_start < data_end && *this_start == '<')
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{
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this_end++;
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while (this_end < data_end &&
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!XP_IS_SPACE (*this_end) &&
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*this_end != '<' && *this_end != '>' &&
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*this_end != '&')
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this_end++;
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}
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this_end++;
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/* Push out the text preceeding the tag. */
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if (last_end && last_end != this_start)
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{
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XP_MEMCPY (out, last_end, this_start - last_end);
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out += this_start - last_end;
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*out = 0;
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}
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if (this_start >= data_end)
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break;
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else if (*this_start == '&')
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{
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XP_STRCPY (out, "&"); out += XP_STRLEN (out);
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}
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else if (*this_start == '>')
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{
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XP_STRCPY (out, ">"); out += XP_STRLEN (out);
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}
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else if (enriched_p &&
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this_start < data_end + 1 &&
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this_start[0] == '<' &&
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this_start[1] == '<')
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{
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XP_STRCPY (out, "<"); out += XP_STRLEN (out);
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}
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else if (this_start != this_end)
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{
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/* Push out this ID. */
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const char *old = this_start + 1;
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char *tag_open = 0;
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char *tag_close = 0;
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if (*old == '/')
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{
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/* This is </tag> */
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old++;
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}
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switch (*old)
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{
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case 'b': case 'B':
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if (!strncasecomp ("BIGGER>", old, 7))
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tag_open = "<FONT SIZE=\"+1\">", tag_close = "</FONT>";
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else if (!strncasecomp ("BLINK>", old, 5))
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/* Of course, both text/richtext and text/enriched must be
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enhanced *somehow*... Or else what would people think. */
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tag_open = "<BLINK>", tag_close = "</BLINK>";
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else if (!strncasecomp ("BOLD>", old, 5))
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tag_open = "<B>", tag_close = "</B>";
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break;
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case 'c': case 'C':
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if (!strncasecomp ("CENTER>", old, 7))
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tag_open = "<CENTER>", tag_close = "</CENTER>";
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else if (!enriched_p &&
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!strncasecomp ("COMMENT>", old, 8))
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tag_open = "<!-- ", tag_close = " -->";
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break;
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case 'e': case 'E':
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if (!strncasecomp ("EXCERPT>", old, 8))
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tag_open = "<BLOCKQUOTE>", tag_close = "</BLOCKQUOTE>";
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break;
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case 'f': case 'F':
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if (!strncasecomp ("FIXED>", old, 6))
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tag_open = "<TT>", tag_close = "</TT>";
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else if (enriched_p &&
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!strncasecomp ("FLUSHBOTH>", old, 10))
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tag_open = "<P ALIGN=LEFT>", tag_close = "</P>";
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else if (!strncasecomp ("FLUSHLEFT>", old, 10))
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tag_open = "<P ALIGN=LEFT>", tag_close = "</P>";
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else if (!strncasecomp ("FLUSHRIGHT>", old, 11))
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tag_open = "<P ALIGN=RIGHT>", tag_close = "</P>";
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else if (!enriched_p &&
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!strncasecomp ("FOOTING>", old, 8))
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tag_open = "<H6>", tag_close = "</H6>";
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break;
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case 'h': case 'H':
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if (!enriched_p &&
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!strncasecomp ("HEADING>", old, 8))
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tag_open = "<H6>", tag_close = "</H6>";
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break;
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case 'i': case 'I':
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if (!strncasecomp ("INDENT>", old, 7))
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tag_open = "<UL>", tag_close = "</UL>";
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else if (!strncasecomp ("INDENTRIGHT>", old, 12))
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tag_open = 0, tag_close = 0;
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/* else if (!enriched_p &&
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!strncasecomp ("ISO-8859-", old, 9))
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tag_open = 0, tag_close = 0; */
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else if (!strncasecomp ("ITALIC>", old, 7))
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tag_open = "<I>", tag_close = "</I>";
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break;
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case 'l': case 'L':
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if (!enriched_p &&
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!strncasecomp ("LT>", old, 3))
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tag_open = "<", tag_close = 0;
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break;
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case 'n': case 'N':
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if (!enriched_p &&
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!strncasecomp ("NL>", old, 3))
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tag_open = "<BR>", tag_close = 0;
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if (enriched_p &&
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!strncasecomp ("NOFILL>", old, 7))
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tag_open = "<NOBR>", tag_close = "</NOBR>";
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/* else if (!enriched_p &&
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!strncasecomp ("NO-OP>", old, 6))
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tag_open = 0, tag_close = 0; */
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/* else if (!enriched_p &&
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!strncasecomp ("NP>", old, 3))
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tag_open = 0, tag_close = 0; */
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break;
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case 'o': case 'O':
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if (!enriched_p &&
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!strncasecomp ("OUTDENT>", old, 8))
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tag_open = 0, tag_close = 0;
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else if (!enriched_p &&
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!strncasecomp ("OUTDENTRIGHT>", old, 13))
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tag_open = 0, tag_close = 0;
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break;
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case 'p': case 'P':
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if (enriched_p &&
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!strncasecomp ("PARAM>", old, 6))
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tag_open = "<!-- ", tag_close = " -->";
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else if (!enriched_p &&
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!strncasecomp ("PARAGRAPH>", old, 10))
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tag_open = "<P>", tag_close = 0;
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break;
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case 's': case 'S':
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if (!enriched_p &&
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!strncasecomp ("SAMEPAGE>", old, 9))
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tag_open = 0, tag_close = 0;
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else if (!enriched_p &&
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!strncasecomp ("SIGNATURE>", old, 10))
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tag_open = "<I><FONT SIZE=\"-1\">", tag_close = "</FONT></I>";
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else if (!strncasecomp ("SMALLER>", old, 8))
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tag_open = "<FONT SIZE=\"-1\">", tag_close = "</FONT>";
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else if (!enriched_p &&
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!strncasecomp ("SUBSCRIPT>", old, 10))
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tag_open = "<SUB>", tag_close = "</SUB>";
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else if (!enriched_p &&
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!strncasecomp ("SUPERSCRIPT>", old, 12))
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tag_open = "<SUP>", tag_close = "</SUP>";
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break;
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case 'u': case 'U':
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if (!strncasecomp ("UNDERLINE>", old, 10))
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tag_open = "<U>", tag_close = "</U>";
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/* else if (!enriched_p &&
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!strncasecomp ("US-ASCII>", old, 10))
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tag_open = 0, tag_close = 0; */
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break;
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case 'v': case 'V':
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if (enriched_p &&
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!strncasecomp ("VERBATIM>", old, 9))
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tag_open = "<PRE>", tag_close = "</PRE>";
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break;
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}
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if (this_start[1] == '/')
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{
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if (tag_close) XP_STRCPY (out, tag_close);
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out += XP_STRLEN (out);
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}
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else
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{
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if (tag_open) XP_STRCPY (out, tag_open);
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out += XP_STRLEN (out);
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}
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}
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/* now go around again */
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last_end = this_end;
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this_start = last_end;
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}
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*out = 0;
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return output_fn (*obufferP, out - *obufferP, closure);
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}
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static int
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MimeInlineTextRichtext_parse_line (char *line, int32 length, MimeObject *obj)
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{
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XP_Bool enriched_p = (((MimeInlineTextRichtextClass *) obj->class)
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->enriched_p);
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return MimeRichtextConvert (line, length,
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obj->options->output_fn,
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obj->options->stream_closure,
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&obj->obuffer, &obj->obuffer_size,
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enriched_p);
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}
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static int
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MimeInlineTextRichtext_parse_begin (MimeObject *obj)
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{
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int status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_begin(obj);
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char s[] = "";
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if (status < 0) return status;
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return MimeObject_write(obj, s, 0, TRUE); /* force out any separators... */
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}
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/* This method is largely the same as that of MimeInlineTextHTML; maybe that
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means that MimeInlineTextRichtext and MimeInlineTextEnriched should share
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a common parent with it which is not also shared by MimeInlineTextPlain?
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*/
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static int
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MimeInlineTextRichtext_parse_eof (MimeObject *obj, XP_Bool abort_p)
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{
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int status;
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if (obj->closed_p) return 0;
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/* Run parent method first, to flush out any buffered data. */
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status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_eof(obj, abort_p);
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if (status < 0) return status;
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if (obj->options &&
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obj->options->write_html_p &&
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obj->options->set_html_state_fn)
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{
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return obj->options->set_html_state_fn(obj->options->stream_closure,
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FALSE, /* layer_encapulate_p */
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FALSE, /* start_p */
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abort_p);
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}
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return 0;
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}
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