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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /comm/mailnews/mime/src/mimetric.cpp
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'comm/mailnews/mime/src/mimetric.cpp')
-rw-r--r--comm/mailnews/mime/src/mimetric.cpp356
1 files changed, 356 insertions, 0 deletions
diff --git a/comm/mailnews/mime/src/mimetric.cpp b/comm/mailnews/mime/src/mimetric.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "mimetric.h"
+#include "mimebuf.h"
+#include "prmem.h"
+#include "plstr.h"
+#include "prlog.h"
+#include "msgCore.h"
+#include <ctype.h>
+
+#define MIME_SUPERCLASS mimeInlineTextClass
+MimeDefClass(MimeInlineTextRichtext, MimeInlineTextRichtextClass,
+ mimeInlineTextRichtextClass, &MIME_SUPERCLASS);
+
+static int MimeInlineTextRichtext_parse_line(const char*, int32_t, MimeObject*);
+static int MimeInlineTextRichtext_parse_begin(MimeObject*);
+static int MimeInlineTextRichtext_parse_eof(MimeObject*, bool);
+
+static int MimeInlineTextRichtextClassInitialize(
+ MimeInlineTextRichtextClass* clazz) {
+ MimeObjectClass* oclass = (MimeObjectClass*)clazz;
+ PR_ASSERT(!oclass->class_initialized);
+ oclass->parse_begin = MimeInlineTextRichtext_parse_begin;
+ oclass->parse_line = MimeInlineTextRichtext_parse_line;
+ oclass->parse_eof = MimeInlineTextRichtext_parse_eof;
+ return 0;
+}
+
+/* This function has this clunky interface because it needs to be called
+ from outside this module (no MimeObject, etc.)
+ */
+int MimeRichtextConvert(const char* line, int32_t length, MimeObject* obj,
+ char** obufferP, int32_t* obuffer_sizeP,
+ bool enriched_p) {
+ /* RFC 1341 (the original MIME spec) defined text/richtext.
+ RFC 1563 superseded text/richtext with text/enriched.
+ The changes from text/richtext to text/enriched are:
+ - CRLF semantics are different
+ - << maps to <
+ - These tags were added:
+ <VERBATIM>, <NOFILL>, <PARAM>, <FLUSHBOTH>
+ - These tags were removed:
+ <COMMENT>, <OUTDENT>, <OUTDENTRIGHT>, <SAMEPAGE>, <SUBSCRIPT>,
+ <SUPERSCRIPT>, <HEADING>, <FOOTING>, <PARAGRAPH>, <SIGNATURE>,
+ <LT>, <NL>, <NP>
+ This method implements them both.
+
+ draft-resnick-text-enriched-03.txt is a proposed update to 1563.
+ - These tags were added:
+ <FONTFAMILY>, <COLOR>, <PARAINDENT>, <LANG>.
+ However, all of these rely on the magic <PARAM> tag, which we
+ don't implement, so we're ignoring all of these.
+ Interesting fact: it's by Peter W. Resnick from Qualcomm (Eudora).
+ And it also says "It is fully expected that other text formatting
+ standards like HTML and SGML will supplant text/enriched in
+ Internet mail."
+ */
+ int status = 0;
+ char* out;
+ const char* data_end;
+ const char* last_end;
+ const char* this_start;
+ const char* this_end;
+ unsigned int desired_size;
+
+ // The code below must never expand the input by more than 5x;
+ // if it does, the desired_size multiplier (5) below must be changed too
+#define BGROWTH 5
+ if ((uint32_t)length >= ((uint32_t)0xfffffffe) / BGROWTH) return -1;
+ desired_size = (length * BGROWTH) + 1;
+#undef BGROWTH
+ if (desired_size >= (uint32_t)*obuffer_sizeP)
+ status = mime_GrowBuffer(desired_size, sizeof(char), 1024, obufferP,
+ obuffer_sizeP);
+ if (status < 0) return status;
+
+ if (enriched_p) {
+ for (this_start = line; this_start < line + length; this_start++)
+ if (!IS_SPACE(*this_start)) break;
+ if (this_start >= line + length) /* blank line */
+ {
+ PL_strncpyz(*obufferP, "<BR>", *obuffer_sizeP);
+ return MimeObject_write(obj, *obufferP, strlen(*obufferP), true);
+ }
+ }
+
+ uint32_t outlen = (uint32_t)*obuffer_sizeP;
+ out = *obufferP;
+ *out = 0;
+
+ data_end = line + length;
+ last_end = line;
+ this_start = last_end;
+ this_end = this_start;
+ uint32_t addedlen = 0;
+ while (this_end < data_end) {
+ /* Skip forward to next special character. */
+ while (this_start < data_end && *this_start != '<' && *this_start != '>' &&
+ *this_start != '&')
+ this_start++;
+
+ this_end = this_start;
+
+ /* Skip to the end of the tag. */
+ if (this_start < data_end && *this_start == '<') {
+ this_end++;
+ while (this_end < data_end && !IS_SPACE(*this_end) && *this_end != '<' &&
+ *this_end != '>' && *this_end != '&')
+ this_end++;
+ }
+
+ this_end++;
+
+ /* Push out the text preceding the tag. */
+ if (last_end && last_end != this_start) {
+ memcpy(out, last_end, this_start - last_end);
+ out += this_start - last_end;
+ *out = 0;
+ outlen -= (this_start - last_end);
+ }
+
+ if (this_start >= data_end)
+ break;
+ else if (*this_start == '&') {
+ PL_strncpyz(out, "&amp;", outlen);
+ addedlen = strlen(out);
+ outlen -= addedlen;
+ out += addedlen;
+ } else if (*this_start == '>') {
+ PL_strncpyz(out, "&gt;", outlen);
+ addedlen = strlen(out);
+ outlen -= addedlen;
+ out += addedlen;
+ } else if (enriched_p && this_start < data_end + 1 &&
+ this_start[0] == '<' && this_start[1] == '<') {
+ PL_strncpyz(out, "&lt;", outlen);
+ addedlen = strlen(out);
+ outlen -= addedlen;
+ out += addedlen;
+ } else if (this_start != this_end) {
+ /* Push out this ID. */
+ const char* old = this_start + 1;
+ const char* tag_open = 0;
+ const char* tag_close = 0;
+ if (*old == '/') {
+ /* This is </tag> */
+ old++;
+ }
+
+ switch (*old) {
+ case 'b':
+ case 'B':
+ if (!PL_strncasecmp("BIGGER>", old, 7)) {
+ tag_open = "<FONT SIZE=\"+1\">";
+ tag_close = "</FONT>";
+ } else if (!PL_strncasecmp("BLINK>", old, 6))
+ // Of course, both text/richtext and text/enriched must be
+ // enhanced *somehow*... Or else what would people think.
+ {
+ tag_open = "<BLINK>";
+ tag_close = "</BLINK>";
+ } else if (!PL_strncasecmp("BOLD>", old, 5)) {
+ tag_open = "<B>";
+ tag_close = "</B>";
+ }
+ break;
+
+ case 'c':
+ case 'C':
+ if (!PL_strncasecmp("CENTER>", old, 7)) {
+ tag_open = "<CENTER>";
+ tag_close = "</CENTER>";
+ } else if (!enriched_p && !PL_strncasecmp("COMMENT>", old, 8)) {
+ tag_open = "<!-- ";
+ tag_close = " -->";
+ }
+ break;
+
+ case 'e':
+ case 'E':
+ if (!PL_strncasecmp("EXCERPT>", old, 8)) {
+ tag_open = "<BLOCKQUOTE>";
+ tag_close = "</BLOCKQUOTE>";
+ }
+ break;
+
+ case 'f':
+ case 'F':
+ if (!PL_strncasecmp("FIXED>", old, 6)) {
+ tag_open = "<TT>";
+ tag_close = "</TT>";
+ } else if (enriched_p && !PL_strncasecmp("FLUSHBOTH>", old, 10)) {
+ tag_open = "<P ALIGN=JUSTIFY>";
+ tag_close = "</P>";
+ } else if (!PL_strncasecmp("FLUSHLEFT>", old, 10)) {
+ tag_open = "<P ALIGN=LEFT>";
+ tag_close = "</P>";
+ } else if (!PL_strncasecmp("FLUSHRIGHT>", old, 11)) {
+ tag_open = "<P ALIGN=RIGHT>";
+ tag_close = "</P>";
+ } else if (!enriched_p && !PL_strncasecmp("FOOTING>", old, 8)) {
+ tag_open = "<H6>";
+ tag_close = "</H6>";
+ }
+ break;
+
+ case 'h':
+ case 'H':
+ if (!enriched_p && !PL_strncasecmp("HEADING>", old, 8)) {
+ tag_open = "<H6>";
+ tag_close = "</H6>";
+ }
+ break;
+
+ case 'i':
+ case 'I':
+ if (!PL_strncasecmp("INDENT>", old, 7)) {
+ tag_open = "<UL>";
+ tag_close = "</UL>";
+ } else if (!PL_strncasecmp("INDENTRIGHT>", old, 12)) {
+ tag_open = 0;
+ tag_close = 0;
+ } else if (!PL_strncasecmp("ITALIC>", old, 7)) {
+ tag_open = "<I>";
+ tag_close = "</I>";
+ }
+ break;
+
+ case 'l':
+ case 'L':
+ if (!enriched_p && !PL_strncasecmp("LT>", old, 3)) {
+ tag_open = "&lt;";
+ tag_close = 0;
+ }
+ break;
+
+ case 'n':
+ case 'N':
+ if (!enriched_p && !PL_strncasecmp("NL>", old, 3)) {
+ tag_open = "<BR>";
+ tag_close = 0;
+ }
+ if (enriched_p && !PL_strncasecmp("NOFILL>", old, 7)) {
+ tag_open = "<NOBR>";
+ tag_close = "</NOBR>";
+ }
+ break;
+
+ case 'o':
+ case 'O':
+ if (!enriched_p && !PL_strncasecmp("OUTDENT>", old, 8)) {
+ tag_open = 0;
+ tag_close = 0;
+ } else if (!enriched_p && !PL_strncasecmp("OUTDENTRIGHT>", old, 13)) {
+ tag_open = 0;
+ tag_close = 0;
+ }
+ break;
+
+ case 'p':
+ case 'P':
+ if (enriched_p && !PL_strncasecmp("PARAM>", old, 6)) {
+ tag_open = "<!-- ";
+ tag_close = " -->";
+ } else if (!enriched_p && !PL_strncasecmp("PARAGRAPH>", old, 10)) {
+ tag_open = "<P>";
+ tag_close = 0;
+ }
+ break;
+
+ case 's':
+ case 'S':
+ if (!enriched_p && !PL_strncasecmp("SAMEPAGE>", old, 9)) {
+ tag_open = 0;
+ tag_close = 0;
+ } else if (!enriched_p && !PL_strncasecmp("SIGNATURE>", old, 10)) {
+ tag_open = "<I><FONT SIZE=\"-1\">";
+ tag_close = "</FONT></I>";
+ } else if (!PL_strncasecmp("SMALLER>", old, 8)) {
+ tag_open = "<FONT SIZE=\"-1\">";
+ tag_close = "</FONT>";
+ } else if (!enriched_p && !PL_strncasecmp("SUBSCRIPT>", old, 10)) {
+ tag_open = "<SUB>";
+ tag_close = "</SUB>";
+ } else if (!enriched_p && !PL_strncasecmp("SUPERSCRIPT>", old, 12)) {
+ tag_open = "<SUP>";
+ tag_close = "</SUP>";
+ }
+ break;
+
+ case 'u':
+ case 'U':
+ if (!PL_strncasecmp("UNDERLINE>", old, 10)) {
+ tag_open = "<U>";
+ tag_close = "</U>";
+ }
+ break;
+
+ case 'v':
+ case 'V':
+ if (enriched_p && !PL_strncasecmp("VERBATIM>", old, 9)) {
+ tag_open = "<PRE>";
+ tag_close = "</PRE>";
+ }
+ break;
+ }
+
+ if (this_start[1] == '/') {
+ if (tag_close) PL_strncpyz(out, tag_close, outlen);
+ addedlen = strlen(out);
+ outlen -= addedlen;
+ out += addedlen;
+ } else {
+ if (tag_open) PL_strncpyz(out, tag_open, outlen);
+ addedlen = strlen(out);
+ outlen -= addedlen;
+ out += addedlen;
+ }
+ }
+
+ /* now go around again */
+ last_end = this_end;
+ this_start = last_end;
+ }
+ *out = 0;
+
+ return MimeObject_write(obj, *obufferP, out - *obufferP, true);
+}
+
+static int MimeInlineTextRichtext_parse_line(const char* line, int32_t length,
+ MimeObject* obj) {
+ bool enriched_p = (((MimeInlineTextRichtextClass*)obj->clazz)->enriched_p);
+
+ return MimeRichtextConvert(line, length, obj, &obj->obuffer,
+ &obj->obuffer_size, enriched_p);
+}
+
+static int MimeInlineTextRichtext_parse_begin(MimeObject* obj) {
+ int status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_begin(obj);
+ char s[] = "";
+ if (status < 0) return status;
+ return MimeObject_write(obj, s, 0, true); /* force out any separators... */
+}
+
+static int MimeInlineTextRichtext_parse_eof(MimeObject* obj, bool abort_p) {
+ int status;
+ if (obj->closed_p) return 0;
+
+ /* Run parent method first, to flush out any buffered data. */
+ status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_eof(obj, abort_p);
+ if (status < 0) return status;
+
+ return 0;
+}