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tdenetwork/kopete/protocols/groupwise/libgroupwise/rtf.ll

867 lines
23 KiB

%{
/*
rtf.ll - A simple RTF Parser (Flex code)
Copyright (c) 2002 by Vladimir Shutoff <vovan@shutoff.ru> (original code)
Copyright (c) 2004 by Thiago S. Barcelos <barcelos@ime.usp.br> (Kopete port)
Kopete (c) 2002-2003 by the Kopete developers <kopete-devel@kde.org>
*************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
*************************************************************************
update rtf.cc:
flex -olex.yy.c `test -f rtf.ll || echo './'`rtf.ll
sed '/^#/ s|lex.yy\.c|rtf.cc|' lex.yy.c >rtf.cc
rm -f lex.yy.c
*/
#define UP 1
#define DOWN 2
#define CMD 3
#define TXT 4
#define HEX 5
#define IMG 6
#define UNICODE_CHAR 7
#define SKIP 8
#define SLASH 9
#define S_TXT 10
#define YY_NEVER_INTERACTIVE 1
#define YY_ALWAYS_INTERACTIVE 0
#define YY_MAIN 0
%}
%option nounput
%option nostack
%option prefix="rtf"
%%
"{" { return UP; }
"}" { return DOWN; }
"\\"[\\\{\}] { return SLASH; }
"\\u"[0-9]{3,7}[ ]?"?" { return UNICODE_CHAR; }
"\\"[A-Za-z]+[0-9]*[ ]? { return CMD; }
"\\'"[0-9A-Fa-f][0-9A-Fa-f] { return HEX; }
"<##"[^>]+">" { return IMG; }
[^\\{}<]+ { return TXT; }
. { return TXT; }
%%
#include "rtf2html.h"
void ParStyle::clearFormatting()
{
// For now, do nothing.
// dir is not a formatting item.
}
QString RTF2HTML::quoteString(const QString &_str, quoteMode mode)
{
QString str = _str;
str.replace(QRegExp("&"), "&amp;");
str.replace(QRegExp("<"), "&lt;");
str.replace(QRegExp(">"), "&gt;");
str.replace(QRegExp("\""), "&quot;");
str.replace(QRegExp("\r"), "");
switch (mode){
case quoteHTML:
str.replace(QRegExp("\n"), "<br>\n");
break;
case quoteXML:
str.replace(QRegExp("\n"), "<br/>\n");
break;
default:
break;
}
QRegExp re(" +");
int len;
int pos = 0;
while ((pos = re.search(str, pos)) != -1) {
len = re.matchedLength();
if (len == 1)
continue;
QString s = " ";
for (int i = 1; i < len; i++)
s += "&nbsp;";
str.replace(pos, len, s);
}
return str;
}
RTF2HTML::RTF2HTML()
: cur_level(this)
{
rtf_ptr = NULL;
bExplicitParagraph = false;
}
OutTag* RTF2HTML::getTopOutTag(TagEnum tagType)
{
vector<OutTag>::iterator it, it_end;
for(it = oTags.begin(), it_end = oTags.end(); it != it_end; ++it)
if (it->tag == tagType)
return &(*it);
return NULL;
}
void RTF2HTML::FlushOutTags()
{
vector<OutTag>::iterator iter;
for (iter = oTags.begin(); iter != oTags.end(); iter++)
{
OutTag &t = *iter;
switch (t.tag){
case TAG_FONT_COLOR:
{
// RTF colors are 1-based; colors[] is a 0-based array.
if (t.param > colors.size() || t.param == 0)
break;
QColor &c = colors[t.param-1];
PrintUnquoted("<span style=\"color:#%02X%02X%02X\">", c.red(), c.green(), c.blue());
}
break;
case TAG_FONT_SIZE:
PrintUnquoted("<span style=\"font-size:%upt\">", t.param);
break;
case TAG_FONT_FAMILY:
{
if (t.param > fonts.size() || t.param == 0)
break;
FontDef &f = fonts[t.param-1];
string name = (!f.nonTaggedName.empty()) ? f.nonTaggedName : f.taggedName;
PrintUnquoted("<span style=\"font-family:%s\">", name.c_str());
}
break;
case TAG_BG_COLOR:{
if (t.param > colors.size() || t.param == 0)
break;
QColor &c = colors[t.param-1];
PrintUnquoted("<span style=\"background-color:#%02X%02X%02X;\">", c.red(), c.green(), c.blue());
break;
}
case TAG_BOLD:
PrintUnquoted("<b>");
break;
case TAG_ITALIC:
PrintUnquoted("<i>");
break;
case TAG_UNDERLINE:
PrintUnquoted("<u>");
break;
default:
break;
}
}
oTags.clear();
}
// This function will close the already-opened tag 'tag'. It will take
// care of closing the tags which 'tag' contains first (ie. it will unroll
// the stack till the point where 'tag' is).
void Level::resetTag(TagEnum tag)
{
// A stack which'll keep tags we had to close in order to reach 'tag'.
// After we close 'tag', we will reopen them.
stack<TagEnum> s;
while (p->tags.size() > m_nTagsStartPos){ // Don't go further than the point where this level starts.
TagEnum nTag = p->tags.top();
/* A tag will be located in oTags if it still wasn't printed out.
A tag will get printed out only if necessary (e.g. <I></I> will
be optimized away).
Thus, for each tag we remove from the actual tag stack, we also
try to remove a yet-to-be-printed tag, and only if there are no
yet-to-be-printed tags left, we start closing the tags we pop.
The tags have one space - needed for umlaute (<EFBFBD>) and .utf8()
*/
if (p->oTags.empty()){
switch (nTag){
case TAG_FONT_COLOR:
case TAG_FONT_SIZE:
case TAG_BG_COLOR:
case TAG_FONT_FAMILY:
p->PrintUnquoted(" </span>");
break;
case TAG_BOLD:
p->PrintUnquoted(" </b>");
break;
case TAG_ITALIC:
p->PrintUnquoted(" </i>");
break;
case TAG_UNDERLINE:
p->PrintUnquoted(" </u>");
break;
default:
break;
}
}else{
p->oTags.pop_back();
}
p->tags.pop();
if (nTag == tag) break; // if we reached the tag we were looking to close.
s.push(nTag); // remember to reopen this tag
}
if (tag == TAG_ALL) return;
while (!s.empty()){
TagEnum nTag = s.top();
switch (nTag){
case TAG_FONT_COLOR:{
unsigned nFontColor = m_nFontColor;
m_nFontColor = 0;
setFontColor(nFontColor);
break;
}
case TAG_FONT_SIZE:{
unsigned nFontSize = m_nFontSize;
m_nFontSize = 0;
setFontSize(nFontSize);
break;
}
case TAG_BG_COLOR:{
unsigned nFontBgColor = m_nFontBgColor;
m_nFontBgColor = 0;
setFontBgColor(nFontBgColor);
break;
}
case TAG_FONT_FAMILY:{
unsigned nFont = m_nFont;
m_nFont = 0;
setFont(nFont);
break;
}
case TAG_BOLD:{
bool nBold = m_bBold;
m_bBold = false;
setBold(nBold);
break;
}
case TAG_ITALIC:{
bool nItalic = m_bItalic;
m_bItalic = false;
setItalic(nItalic);
break;
}
case TAG_UNDERLINE:{
bool nUnderline = m_bUnderline;
m_bUnderline = false;
setUnderline(nUnderline);
break;
}
default:
break;
}
s.pop();
}
}
Level::Level(RTF2HTML *_p) :
p(_p),
m_bFontTbl(false),
m_bColors(false),
m_bFontName(false),
m_bTaggedFontNameOk(false),
m_nFont(0),
m_nEncoding(0)
{
m_nTagsStartPos = p->tags.size();
Init();
}
Level::Level(const Level &l) :
p(l.p),
m_bFontTbl(l.m_bFontTbl),
m_bColors(l.m_bColors),
m_bFontName(false),
m_bTaggedFontNameOk(l.m_bTaggedFontNameOk),
m_nFont(l.m_nFont),
m_nEncoding(l.m_nEncoding)
{
m_nTagsStartPos = p->tags.size();
Init();
}
void Level::Init()
{
m_nFontColor = 0;
m_nFontBgColor = 0;
m_nFontSize = 0;
m_bFontName = false;
m_bBold = false;
m_bItalic = false;
m_bUnderline = false;
}
void RTF2HTML::PrintUnquoted(const char *str, ...)
{
char buff[1024];
va_list ap;
va_start(ap, str);
vsnprintf(buff, sizeof(buff), str, ap);
va_end(ap);
sParagraph += buff;
}
void RTF2HTML::PrintQuoted(const QString &str)
{
sParagraph += quoteString(str);
}
void RTF2HTML::FlushParagraph()
{
if (!bExplicitParagraph || sParagraph.isEmpty())
return;
/*
s += "<p dir=\"";
// Note: Lower-case 'ltr' and 'rtl' are important for Qt.
s += (parStyle.dir == ParStyle::DirRTL ? "rtl" : "ltr");
s += "\">";
s += sParagraph;
s += "</p>";
*/
s += sParagraph;
s += "<br>";
// Clear up the paragraph members
sParagraph = "";
bExplicitParagraph = false;
}
void Level::setFont(unsigned nFont)
{
if (nFont <= 0)
return;
if (m_bFontTbl){
if (nFont > p->fonts.size() +1){
kdDebug(14200) << "Invalid font index (" <<
nFont << ") while parsing font table." << endl;
return;
}
if (nFont > p->fonts.size()){
FontDef f;
f.charset = 0;
p->fonts.push_back(f);
}
m_nFont = nFont;
}
else
{
if (nFont > p->fonts.size())
{
kdDebug(14200) << "Invalid font index (" <<
nFont << ")." << endl;
return;
}
if (m_nFont == nFont)
return;
m_nFont = nFont;
if (m_nFont) resetTag(TAG_FONT_FAMILY);
m_nEncoding = p->fonts[nFont-1].charset;
p->oTags.push_back(OutTag(TAG_FONT_FAMILY, nFont));
p->PutTag(TAG_FONT_FAMILY);
}
}
void Level::setFontName()
{
// This function is only valid during font table parsing.
if (m_bFontTbl){
if ((m_nFont > 0) && (m_nFont <= p->fonts.size()))
// Be prepared to accept a font name.
m_bFontName = true;
}
}
void Level::setEncoding(unsigned nEncoding)
{
if (m_bFontTbl){
if ((m_nFont > 0) && (m_nFont <= p->fonts.size()))
p->fonts[m_nFont-1].charset = nEncoding;
return;
}
m_nEncoding = nEncoding;
}
void Level::setBold(bool bBold)
{
if (m_bBold == bBold) return;
if (m_bBold) resetTag(TAG_BOLD);
m_bBold = bBold;
if (!m_bBold) return;
p->oTags.push_back(OutTag(TAG_BOLD, 0));
p->PutTag(TAG_BOLD);
}
void Level::setItalic(bool bItalic)
{
if (m_bItalic == bItalic) return;
if (m_bItalic) resetTag(TAG_ITALIC);
m_bItalic = bItalic;
if (!m_bItalic) return;
p->oTags.push_back(OutTag(TAG_ITALIC, 0));
p->PutTag(TAG_ITALIC);
}
void Level::setUnderline(bool bUnderline)
{
if (m_bUnderline == bUnderline) return;
if (m_bUnderline) resetTag(TAG_UNDERLINE);
m_bUnderline = bUnderline;
if (!m_bUnderline) return;
p->oTags.push_back(OutTag(TAG_UNDERLINE, 0));
p->PutTag(TAG_UNDERLINE);
}
void Level::setFontColor(unsigned short nColor)
{
if (m_nFontColor == nColor) return;
if (m_nFontColor) resetTag(TAG_FONT_COLOR);
if (nColor > p->colors.size()) return;
m_nFontColor = nColor;
p->oTags.push_back(OutTag(TAG_FONT_COLOR, m_nFontColor));
p->PutTag(TAG_FONT_COLOR);
}
void Level::setFontBgColor(unsigned short nColor)
{
if (m_nFontBgColor == nColor) return;
if (m_nFontBgColor != 0) resetTag(TAG_BG_COLOR);
if (nColor > p->colors.size()) return;
m_nFontBgColor = nColor;
p->oTags.push_back(OutTag(TAG_BG_COLOR, m_nFontBgColor));
p->PutTag(TAG_BG_COLOR);
}
void Level::setFontSizeHalfPoints(unsigned short nSize)
{
setFontSize(nSize / 2);
}
void Level::setFontSize(unsigned short nSize)
{
if (m_nFontSize == nSize) return;
if (m_nFontSize) resetTag(TAG_FONT_SIZE);
p->oTags.push_back(OutTag(TAG_FONT_SIZE, nSize));
p->PutTag(TAG_FONT_SIZE);
m_nFontSize = nSize;
}
void Level::startParagraph()
{
// Whatever tags we have open now, close them.
// We cannot carry let character formatting tags wrap paragraphs,
// since a formatting tag can close at any time and we cannot
// close the paragraph any time we want.
resetTag(TAG_ALL);
// Flush the current paragraph HTML to the document HTML.
p->FlushParagraph();
// Mark this new paragraph as an explicit one (from \par etc.).
p->bExplicitParagraph = true;
// Restore character formatting
p->oTags.push_back(OutTag(TAG_FONT_SIZE, m_nFontSize));
p->PutTag(TAG_FONT_SIZE);
p->oTags.push_back(OutTag(TAG_FONT_COLOR, m_nFontColor));
p->PutTag(TAG_FONT_COLOR);
p->oTags.push_back(OutTag(TAG_FONT_FAMILY, m_nFont));
p->PutTag(TAG_FONT_FAMILY);
if (m_nFontBgColor != 0)
{
p->oTags.push_back(OutTag(TAG_BG_COLOR, m_nFontBgColor));
p->PutTag(TAG_BG_COLOR);
}
if (m_bBold)
{
p->oTags.push_back(OutTag(TAG_BOLD, 0));
p->PutTag(TAG_BOLD);
}
if (m_bItalic)
{
p->PutTag(TAG_ITALIC);
p->oTags.push_back(OutTag(TAG_ITALIC, 0));
}
if (m_bUnderline)
{
p->oTags.push_back(OutTag(TAG_UNDERLINE, 0));
p->PutTag(TAG_UNDERLINE);
}
}
bool Level::isParagraphOpen() const
{
return p->bExplicitParagraph;
}
void Level::clearParagraphFormatting()
{
// implicitly start a paragraph
if (!isParagraphOpen())
startParagraph();
// Since we don't implement any of the paragraph formatting tags (e.g. alignment),
// we don't clean up anything here. Note that \pard does NOT clean character
// formatting (such as font size, font weight, italics...).
p->parStyle.clearFormatting();
}
void Level::setParagraphDirLTR()
{
// implicitly start a paragraph
if (!isParagraphOpen())
startParagraph();
p->parStyle.dir = ParStyle::DirLTR;
}
void Level::setParagraphDirRTL()
{
// implicitly start a paragraph
if (!isParagraphOpen())
startParagraph();
p->parStyle.dir = ParStyle::DirRTL;
}
void Level::addLineBreak()
{
p->PrintUnquoted("<br/>");
}
void Level::reset()
{
resetTag(TAG_ALL);
if (m_bColors){
if (m_bColorInit){
QColor c(m_nRed, m_nGreen, m_nBlue);
p->colors.push_back(c);
resetColors();
}
return;
}
}
void Level::setText(const char *str)
{
if (m_bColors)
{
reset();
}
else if (m_bFontTbl)
{
if ((m_nFont <= 0) || (m_nFont > p->fonts.size()))
return;
FontDef& def = p->fonts[m_nFont-1];
const char *pp = strchr(str, ';');
unsigned size;
if (pp != NULL)
size = (pp - str);
else
size = strlen(str);
if (m_bFontName)
{
def.nonTaggedName.append(str, size);
// We know we have the entire name
if (pp != NULL)
m_bFontName = false;
}
else if (!m_bTaggedFontNameOk)
{
def.taggedName.append(str, size);
if (pp != NULL)
m_bTaggedFontNameOk = true;
}
}
else
{
for (; *str; str++)
if ((unsigned char)(*str) >= ' ') break;
if (!*str) return;
p->FlushOutTags();
text += str;
}
}
void Level::flush()
{
if (text.length() == 0) return;
// TODO: Make encoding work in Kopete
/*
const char *encoding = NULL;
if (m_nEncoding){
for (const ENCODING *c = ICQPlugin::core->encodings; c->language; c++){
if (!c->bMain)
continue;
if ((unsigned)c->rtf_code == m_nEncoding){
encoding = c->codec;
break;
}
}
}
if (encoding == NULL)
encoding = p->encoding;
QTextCodec *codec = ICQClient::_getCodec(encoding);
*/
//p->PrintQuoted(codec->toUnicode(text.c_str(), text.length()));
p->PrintQuoted(text.c_str());
text = "";
}
const unsigned FONTTBL = 0;
const unsigned COLORTBL = 1;
const unsigned RED = 2;
const unsigned GREEN = 3;
const unsigned BLUE = 4;
const unsigned CF = 5;
const unsigned FS = 6;
const unsigned HIGHLIGHT = 7;
const unsigned PARD = 8;
const unsigned PAR = 9;
const unsigned I = 10;
const unsigned B = 11;
const unsigned UL = 12;
const unsigned F = 13;
const unsigned FCHARSET = 14;
const unsigned FNAME = 15;
const unsigned ULNONE = 16;
const unsigned LTRPAR = 17;
const unsigned RTLPAR = 18;
const unsigned LINE = 19;
static char cmds[] =
"fonttbl\x00"
"colortbl\x00"
"red\x00"
"green\x00"
"blue\x00"
"cf\x00"
"fs\x00"
"highlight\x00"
"pard\x00"
"par\x00"
"i\x00"
"b\x00"
"ul\x00"
"f\x00"
"fcharset\x00"
"fname\x00"
"ulnone\x00"
"ltrpar\x00"
"rtlpar\x00"
"line\x00"
"\x00";
int yywrap() { return 1; }
static char h2d(char c)
{
if ((c >= '0') && (c <= '9'))
return c - '0';
if ((c >= 'A') && (c <= 'F'))
return (c - 'A') + 10;
if ((c >= 'a') && (c <= 'f'))
return (c - 'a') + 10;
return 0;
}
QString RTF2HTML::Parse(const char *rtf, const char *_encoding)
{
encoding = _encoding;
YY_BUFFER_STATE yy_current_buffer = yy_scan_string(rtf);
rtf_ptr = rtf;
for (;;){
int res = yylex();
if (!res) break;
switch (res){
case UP:{
cur_level.flush();
levels.push(cur_level);
break;
}
case DOWN:{
if (!levels.empty()){
cur_level.flush();
cur_level.reset();
cur_level = levels.top();
levels.pop();
}
break;
}
case IMG:{
cur_level.flush();
const char ICQIMAGE[] = "icqimage";
const char *smiles[] = { ":-)" , ":-O" , ":-|" , ":-/" , // 0-3
":-(" , ":-*" , ":-/" , ":'(" , // 4-7
";-)" , ":-@" , ":-$" , ":-X" , // 8-B
":-P" , "8-)" , "O:)" , ":-D" }; // C-F
const char *p = yytext + 3;
if ((strlen(p) > strlen(ICQIMAGE)) && !memcmp(p, ICQIMAGE, strlen(ICQIMAGE))){
unsigned n = 0;
for (p += strlen(ICQIMAGE); *p; p++){
if ((*p >= '0') && (*p <= '9')){
n = n << 4;
n += (*p - '0');
continue;
}
if ((*p >= 'A') && (*p <= 'F')){
n = n << 4;
n += (*p - 'A') + 10;
continue;
}
if ((*p >= 'a') && (*p <= 'f')){
n = n << 4;
n += (*p - 'a') + 10;
continue;
}
break;
}
if (n < 16)
PrintUnquoted(" %s ", smiles[n] );
}else{
kdDebug(14200) << "Unknown image " << yytext << endl;
}
break;
}
case SKIP:
break;
case SLASH:
cur_level.setText(yytext+1);
break;
case TXT:
cur_level.setText(yytext);
break;
case UNICODE_CHAR:{
cur_level.flush();
sParagraph += QChar((unsigned short)(atol(yytext + 2)));
break;
}
case HEX:{
char s[2];
s[0] = (h2d(yytext[2]) << 4) + h2d(yytext[3]);
s[1] = 0;
cur_level.setText(s);
break;
}
case CMD:
{
cur_level.flush();
const char *cmd = yytext + 1;
unsigned n_cmd = 0;
unsigned cmd_size = 0;
int cmd_value = -1;
const char *p;
for (p = cmd; *p; p++, cmd_size++)
if (((*p >= '0') && (*p <= '9')) || (*p == ' ')) break;
if (*p && (*p != ' ')) cmd_value = atol(p);
for (p = cmds; *p; p += strlen(p) + 1, n_cmd++){
if (strlen(p) > cmd_size) continue;
if (!memcmp(p, cmd, cmd_size)) break;
}
cmd += strlen(p);
switch (n_cmd){
case FONTTBL: // fonttbl
cur_level.setFontTbl();
break;
case COLORTBL:
cur_level.setColors();
break;
case RED:
cur_level.setRed(cmd_value);
break;
case GREEN:
cur_level.setGreen(cmd_value);
break;
case BLUE:
cur_level.setBlue(cmd_value);
break;
case CF:
cur_level.setFontColor(cmd_value);
break;
case FS:
cur_level.setFontSizeHalfPoints(cmd_value);
break;
case HIGHLIGHT:
cur_level.setFontBgColor(cmd_value);
break;
case PARD:
cur_level.clearParagraphFormatting();
break;
case PAR:
cur_level.startParagraph();
break;
case I:
cur_level.setItalic(cmd_value != 0);
break;
case B:
cur_level.setBold(cmd_value != 0);
break;
case UL:
cur_level.setUnderline(cmd_value != 0);
break;
case ULNONE:
cur_level.setUnderline(false);
break;
case F:
// RTF fonts are 0-based; our font index is 1-based.
cur_level.setFont(cmd_value+1);
break;
case FCHARSET:
cur_level.setEncoding(cmd_value);
break;
case FNAME:
cur_level.setFontName();
break;
case LTRPAR:
cur_level.setParagraphDirLTR();
break;
case RTLPAR:
cur_level.setParagraphDirRTL();
break;
case LINE:
cur_level.addLineBreak();
}
break;
}
}
}
yy_delete_buffer(yy_current_buffer);
yy_current_buffer = NULL;
FlushParagraph();
return s;
}
/*
bool ICQClient::parseRTF(const char *rtf, const char *encoding, QString &res)
{
char _RTF[] = "{\\rtf";
if ((strlen(rtf) > strlen(_RTF)) && !memcmp(rtf, _RTF, strlen(_RTF))){
RTF2HTML p;
res = p.Parse(rtf, encoding);
return true;
}
QTextCodec *codec = ICQClient::_getCodec(encoding);
res = codec->toUnicode(rtf, strlen(rtf));
return false;
}
*/