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Reimplemented [RTFHandler parse] to have an unambiguous decoding of control words

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[RTFHandler parseFontTable] reimplemented on the same line.
This commit is contained in:
Javier Amor García
2015-11-13 15:53:36 +01:00
parent 2f63542e07
commit 94d4da6e1e
1 changed files with 452 additions and 294 deletions
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746
OpenChange/RTFHandler.m
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@@ -25,9 +25,9 @@
//
// Useful macros
//
#define ADVANCE _bytes++; _current_pos++;
#define ADVANCE_N(N) _bytes += (N); _current_pos += (N);
#define REWIND _bytes--; _current_pos--;
#define ADVANCE self->_bytes++; self->_current_pos++;
#define ADVANCE_N(N) self->_bytes += (N); self->_current_pos += (N);
#define REWIND self->_bytes--; self->_current_pos--;
#define DEFAULT_CHARSET 1
#define FONTNAME_LEN_MAX 100
@@ -408,16 +408,47 @@ const unsigned short ansicpg874[256] = {
//
@implementation RTFHandler
- (id) initWithData: (NSData *) theData
static NSMapTable *_charsets = nil;
static NSMapTable *_cws = nil;
typedef enum {
CW_UNKNOWN = 0,
CW_ANSICPG,
CW_B,
CW_CF,
CW_COLORTBL,
CW_F,
CW_FONTTBL,
CW_I,
CW_PAR,
CW_PICT,
CW_SOFTLINE,
CW_STRIKE,
CW_STYLESHEET,
CW_TAB,
CW_U,
CW_UL,
CW_ULNONE
} commandWordId;
static NSMapTable *_fontCws = nil;
typedef enum {
FONTCW_UNKNOWN = 0,
FONTCW_F,
FONTCW_FBIDI,
FONTCW_FCHARSET,
FONTCW_FDECOR,
FONTCW_FMODERN,
FONTCW_FNIL,
FONTCW_FPRQ,
FONTCW_FROMAN,
FONTCW_FSCRIPT,
FONTCW_FSWISS,
FONTCW_FTECH
} fontCommandWordId;
static void _init_charsets_table()
{
if ((self = [super init]))
{
ASSIGN(_data, theData);
_bytes = (char *)[_data bytes];
_len = [_data length];
_current_pos = 0;
_charsets = NSCreateMapTable(NSObjectMapKeyCallBacks, NSNonOwnedPointerMapValueCallBacks, 10);
_charsets = NSCreateMapTable(NSObjectMapKeyCallBacks, NSNonOwnedPointerMapValueCallBacks, 23);
// 238 — Eastern European - cpg1250
NSMapInsert(_charsets, @"ansicpg1250", ansicpg1250);
NSMapInsert(_charsets, [NSNumber numberWithUnsignedChar: 238], ansicpg1250);
@@ -467,6 +498,59 @@ const unsigned short ansicpg874[256] = {
// 136 — Big5
// 254 — PC 437
// 255 — OEM
}
static void _init_cws_table()
{
_cws = NSCreateMapTable(NSObjectMapKeyCallBacks, NSNonOwnedPointerMapValueCallBacks, 16);
NSMapInsert(_cws, @"ansicpg", (void *) CW_ANSICPG);
NSMapInsert(_cws, @"b", (void *) CW_B);
NSMapInsert(_cws, @"cf", (void *) CW_CF);
NSMapInsert(_cws, @"colortbl", (void *) CW_COLORTBL);
NSMapInsert(_cws, @"f", (void *) CW_F);
NSMapInsert(_cws, @"fonttbl", (void *) CW_FONTTBL);
NSMapInsert(_cws, @"i", (void *) CW_I);
NSMapInsert(_cws, @"par", (void *) CW_PAR);
NSMapInsert(_cws, @"pict", (void *) CW_PICT);
NSMapInsert(_cws, @"softline", (void *) CW_SOFTLINE);
NSMapInsert(_cws, @"strike", (void *) CW_STRIKE);
NSMapInsert(_cws, @"stylesheet", (void *) CW_STYLESHEET);
NSMapInsert(_cws, @"tab", (void *) CW_TAB);
NSMapInsert(_cws, @"u", (void *) CW_U);
NSMapInsert(_cws, @"ul", (void *) CW_UL);
NSMapInsert(_cws, @"ulnone", (void *) CW_ULNONE);
}
static void _init_fontCws_table()
{
_fontCws = NSCreateMapTable(NSObjectMapKeyCallBacks, NSNonOwnedPointerMapValueCallBacks, 23);
NSMapInsert(_fontCws, @"f", (void *) FONTCW_F);
NSMapInsert(_fontCws, @"fbidi", (void *) FONTCW_FBIDI);
NSMapInsert(_fontCws, @"fcharset", (void *) FONTCW_FCHARSET);
NSMapInsert(_fontCws, @"fdecor", (void *) FONTCW_FDECOR);
NSMapInsert(_fontCws, @"fmodern", (void *) FONTCW_FMODERN);
NSMapInsert(_fontCws, @"fnil", (void *) FONTCW_FNIL);
NSMapInsert(_fontCws, @"fprq", (void *) FONTCW_FPRQ);
NSMapInsert(_fontCws, @"froman", (void *) FONTCW_FROMAN);
NSMapInsert(_fontCws, @"fscript", (void *) FONTCW_FSCRIPT);
NSMapInsert(_fontCws, @"fswiss", (void *) FONTCW_FSWISS);
NSMapInsert(_fontCws, @"ftech", (void *) FONTCW_FTECH);
}
- (id) initWithData: (NSData *) theData
{
if ((self = [super init]))
{
ASSIGN(_data, theData);
_bytes = (char *)[_data bytes];
_len = [_data length];
_current_pos = 0;
if (_charsets == nil)
_init_charsets_table();
if (_cws == nil)
_init_cws_table();
if (_fontCws == nil)
_init_fontCws_table();
}
return self;
@@ -600,8 +684,6 @@ const unsigned short ansicpg874[256] = {
/* In other cases, the delimiting character terminates the control
word and is not part of the control word. */
*len = end - start + 1;
return start;
}
@@ -716,6 +798,8 @@ const unsigned short ansicpg874[256] = {
unsigned int len;
BOOL hasArg;
int arg;
NSString *cwKey;
fontCommandWordId cwId;
cw = [self parseControlWordAndSetLenIn: &len
setHasIntArgumentIn: &hasArg
@@ -725,76 +809,57 @@ const unsigned short ansicpg874[256] = {
else if (cw == NULL)
continue;
if (len == 1)
{
if (strncmp((const char*) cw, "f", len) == 0)
{
if (hasArg)
fontInfo->index = arg;
}
}
else if (len == 4)
{
if (strncmp((const char*) cw, "fnil", len) == 0)
{
fontInfo->family = @"nil";
}
else if (strncmp((const char*) cw, "fprq", len) == 0)
{
if (hasArg)
fontInfo->pitch = arg;
}
}
else if (len == 5)
{
if (strncmp((const char*) cw, "fbidi", len) == 0)
{
fontInfo->family = @"bidi";
}
else if (strncmp((const char*) cw, "ftech", len) == 0)
{
fontInfo->family = @"tech";
}
}
else if (len == 6)
{
if (strncmp((const char*) cw, "froman", len) == 0)
{
fontInfo->family = @"roman";
}
else if (strncmp((const char*) cw, "fswiss", len) == 0)
{
fontInfo->family = @"swiss";
}
else if (strncmp((const char*) cw, "fdecor", len) == 0)
{
fontInfo->family = @"decor";
}
}
else if (len == 7)
{
if (strncmp((const char*) cw, "fmodern", len) == 0)
{
fontInfo->family = @"modern";
}
}
else if (len == 8)
{
if (strncmp((const char* ) cw, "fcharset", len) == 0)
{
if (hasArg)
{
fontInfo->charset = arg;
}
cwKey= [[NSString alloc] initWithBytesNoCopy: (void *)cw
length: len
encoding: NSASCIIStringEncoding
freeWhenDone: NO];
[cwKey autorelease];
}
else if (strncmp((const char*) cw, "fscript", len) == 0)
{
fontInfo->family = @"fscript";
}
cwId = (fontCommandWordId) NSMapGet(_fontCws, cwKey);
switch (cwId)
{
case FONTCW_F:
if (hasArg)
fontInfo->index = arg;
break;
case FONTCW_FBIDI:
fontInfo->family = @"bidi";
break;
case FONTCW_FCHARSET:
if (hasArg)
fontInfo->charset = arg;
break;
case FONTCW_FDECOR:
fontInfo->family = @"decor";
break;
case FONTCW_FMODERN:
fontInfo->family = @"modern";
break;
case FONTCW_FNIL:
fontInfo->family = @"nil";
break;
case FONTCW_FPRQ:
if (hasArg)
fontInfo->pitch = arg;
break;
case FONTCW_FROMAN:
fontInfo->family = @"roman";
break;
case FONTCW_FSCRIPT:
fontInfo->family = @"script";
break;
case FONTCW_FSWISS:
fontInfo->family = @"swiss";
break;
case FONTCW_FTECH:
fontInfo->family = @"tech";
break;
case FONTCW_UNKNOWN:
default:
// do nothing
break;
}
}
}
else // no char
{
if (level == 2 && isalnum(*_bytes))
@@ -900,9 +965,238 @@ const unsigned short ansicpg874[256] = {
[self parseIgnoringEverything];
}
//
//
//
// todo: This keyword is only valid in the RTF header section right after the \ansi, \mac, \pc or \pca keyword.
inline static void parseAnsicpg (BOOL hasArg, int arg, const unsigned short **out_default_char)
{
NSString *key;
const unsigned short *res;
if (!hasArg)
return;
key = [NSString stringWithFormat: @"anscicpg%i", arg];
res = NSMapGet(_charsets, key);
if (res)
*out_default_char = res;
}
inline static void parseB(RTFHandler *self, BOOL hasArg, int arg, RTFFormattingOptions *formattingOptions)
{
if (!formattingOptions)
return;
if (hasArg && arg == 0)
{
[self->_html appendBytes: "</b>" length: 4];
formattingOptions->bold = NO;
}
else
{
[self->_html appendBytes: "<b>" length: 3];
formattingOptions->bold = YES;
}
}
inline static void parseCf(RTFHandler *self, BOOL hasArg, int arg, RTFFormattingOptions *formattingOptions, RTFColorTable *colorTable)
{
RTFColorDef *colorDef;
char *v;
if (!hasArg)
return;
if (!formattingOptions)
return;
colorDef = [colorTable colorDefAtIndex: arg];
if (!colorDef)
return;
if (formattingOptions->color_index >= 0)
{
[self->_html appendBytes: "</font>" length: 7];
}
formattingOptions->color_index = arg;
v = calloc(23, sizeof(char));
sprintf(v, "<font color=\"#%02x%02x%02x\">", colorDef->red, colorDef->green, colorDef->blue);
[self->_html appendBytes: v length: strlen(v)];
free(v);
}
inline static void parseColorTableWrapper(RTFHandler *self, RTFColorTable **colorTable)
{
*colorTable = [self parseColorTable];
}
inline static void parseF(RTFHandler *self, BOOL hasArg, int arg, RTFFormattingOptions *formattingOptions, RTFFontTable *fontTable)
{
RTFFontInfo *fontInfo;
if (!hasArg)
return;
if (!formattingOptions)
return;
if (formattingOptions->font_index >= 0 && arg != formattingOptions->font_index)
{
[self->_html appendBytes: "</font>" length: 7];
}
formattingOptions->font_index = arg;
fontInfo = [fontTable fontInfoAtIndex: arg];
char *v = NULL;
if (fontInfo && fontInfo->name)
{
if ([fontInfo->name length] < 128)
{
int tag_size = 15 + [fontInfo->name length];
v = calloc(tag_size, sizeof(char));
snprintf(v, tag_size, "<font face=\"%s\">", [fontInfo->name UTF8String]);
}
else
{
NSLog(@"RTFHandler: Font %u has %d chars length, parse error? "
"Ignored", arg, [fontInfo->name length]);
v = calloc(7, sizeof(char));
sprintf(v, "<font>");
}
}
else
{
// RTF badformed? We don't know about that font (arg index not found).
// Anyhow, we still open the html tag because in the future
// we will close it (e.g. when new font is used).
v = calloc(7, sizeof(char));
sprintf(v, "<font>");
}
if (fontInfo && fontInfo->charset)
{
if (fontInfo->charset == DEFAULT_CHARSET)
/* charset 1 is default charset */
formattingOptions->charset = NULL;
else {
NSNumber *key = [NSNumber numberWithUnsignedChar: fontInfo->charset];
formattingOptions->charset = NSMapGet(_charsets, key);
}
}
[self->_html appendBytes: v length: strlen(v)];
free(v);
}
inline static void parseFontTableWrapper(RTFHandler *self, const char * cw, RTFFontTable **fontTable)
{
// We rewind our buffer so we start at the beginning of {\fonttbl...
self->_bytes = cw-2;
self->_current_pos -= 9; // Length: {\fonttbl
*fontTable = [self parseFontTable];
// We go back 1 byte in order to end our section properly ('}' character)
REWIND;
}
inline static void parseI(RTFHandler *self, BOOL hasArg, int arg, RTFFormattingOptions *formattingOptions)
{
if (!formattingOptions)
return;
if (hasArg && arg == 0)
{
[self->_html appendBytes: "</i>" length: 4];
formattingOptions->italic = NO;
}
else
{
[self->_html appendBytes: "<i>" length: 3];
formattingOptions->italic = YES;
}
}
inline static void parsePar(RTFHandler *self)
{
[self->_html appendBytes: "<br>" length: 4];
}
inline static void parsePictureWrapper(RTFHandler *self, const char * cw)
{
self->_bytes = cw-2;
self->_current_pos -= 6; // Length: {\pict
[self parsePicture];
REWIND;
}
// same implementation that /par
inline static void parseSoftline(RTFHandler *self)
{
[self->_html appendBytes: "<br>" length: 4];
}
inline static void parseStrike(RTFHandler *self, BOOL hasArg, int arg, RTFFormattingOptions *formattingOptions)
{
if (!formattingOptions)
return;
if (hasArg && arg == 0)
{
[self->_html appendBytes: "</strike>" length: 9];
formattingOptions->strikethrough = NO;
}
else
{
[self->_html appendBytes: "<strike>" length: 8];
formattingOptions->strikethrough = YES;
}
}
inline static void parseStyleSheetWrapper(RTFHandler *self, const char * cw)
{
self->_bytes = cw-2;
self->_current_pos -= 12; // Length: {\stylesheet
[self parseStyleSheet];
REWIND;
}
inline static void parseTab(RTFHandler *self)
{
[self->_html appendBytes: "&nbsp;&nbsp;" length: 12];
}
inline static void parseU(RTFHandler *self, BOOL hasArg, int arg)
{
unichar uch;
NSString *s;
NSData *d;
if (!hasArg)
return;
if (arg < 0)
// a negative value means a value greater than 32767
arg = 32767 - arg;
uch = (unichar) arg;
s = [NSString stringWithCharacters: &uch length: 1];
d = [s dataUsingEncoding: NSUTF8StringEncoding];
[self->_html appendData: d];
}
inline static void parseUl(RTFHandler *self, BOOL hasArg, int arg, RTFFormattingOptions *formattingOptions)
{
if (!formattingOptions)
return;
if (hasArg && arg ==0)
{
[self->_html appendBytes: "</u>" length: 4];
formattingOptions->underline = NO;
}
else
{
[self->_html appendBytes: "<u>" length: 3];
formattingOptions->underline = YES;
}
}
- (NSMutableData *) parse
{
RTFFormattingOptions *formattingOptions;
@@ -910,7 +1204,7 @@ const unsigned short ansicpg874[256] = {
RTFFontTable *fontTable;
RTFStack *stack;
const unsigned short *default_charset;
const unsigned short *defaultCharset;
// convenience variables for parsing
unsigned char c;
@@ -921,7 +1215,7 @@ const unsigned short ansicpg874[256] = {
stack = [[RTFStack alloc] init];
fontTable = nil;
colorTable = nil;
default_charset = ansicpg1252;
defaultCharset = ansicpg1252;
formattingOptions = nil;
_html = [[NSMutableData alloc] init];
@@ -942,6 +1236,10 @@ const unsigned short ansicpg874[256] = {
{
unsigned int len;
const char *cw;
BOOL hasArg;
int arg;
NSString *cwKey;
commandWordId cwId;
char nextByte = *(_bytes+1);
if (nextByte == '\'')
@@ -955,7 +1253,7 @@ const unsigned short ansicpg874[256] = {
if (formattingOptions && formattingOptions->charset)
active_charset = formattingOptions->charset;
else
active_charset = default_charset;
active_charset = defaultCharset;
ADVANCE;
@@ -998,213 +1296,73 @@ const unsigned short ansicpg874[256] = {
}
cw = [self parseControlWord: &len];
cw = [self parseControlWordAndSetLenIn: &len
setHasIntArgumentIn: &hasArg
setIntArgumentIn: &arg];
if (cw == NULL)
continue;
cwKey= [[NSString alloc] initWithBytesNoCopy: (void *)cw
length: len
encoding: NSASCIIStringEncoding
freeWhenDone: NO];
[cwKey autorelease];
s = [[NSString alloc] initWithBytesNoCopy: (void *)cw
length: len
encoding: NSASCIIStringEncoding
freeWhenDone: NO];
[s autorelease];
// todo: This keyword should be emitted in the RTF header section right after the \ansi, \mac, \pc or \pca keyword.
if (strncmp(cw, "ansicpg", 7) == 0)
cwId = (commandWordId) NSMapGet(_cws, cwKey);
switch (cwId)
{
default_charset = NSMapGet(_charsets, s);
}
else if (strncmp(cw, "fonttbl", 7) == 0)
{
// We rewind our buffer so we start at the beginning of {\fonttbl...
_bytes = cw-2;
_current_pos -= 9; // Length: {\fonttbl
fontTable = [self parseFontTable];
// We go back 1 byte in order to end our section properly ('}' character)
REWIND;
}
else if (strncmp(cw, "stylesheet", 10) == 0)
{
_bytes = cw-2;
_current_pos -= 12; // Length: {\stylesheet
[self parseStyleSheet];
REWIND;
}
else if (strncmp(cw, "colortbl", 8) == 0)
{
colorTable = [self parseColorTable];
}
else if (strncmp(cw, "pict", 4) == 0)
{
_bytes = cw-2;
_current_pos -= 6; // Length: {\pict
[self parsePicture];
REWIND;
}
else if ([s isEqualToString: @"b"] && formattingOptions)
{
[_html appendBytes: "<b>" length: 3];
formattingOptions->bold = YES;
}
else if ([s isEqualToString: @"b0"] && formattingOptions)
{
[_html appendBytes: "</b>" length: 4];
formattingOptions->bold = NO;
}
else if ([s hasPrefix: @"cf"] && [s length] > 2)
{
RTFColorDef *colorDef;
int color_index;
char *v;
if (!formattingOptions) continue;
color_index = [[s substringFromIndex: 2] intValue];
colorDef = [colorTable colorDefAtIndex: color_index];
if (!colorDef) continue;
if (formattingOptions->color_index >= 0)
{
[_html appendBytes: "</font>" length: 7];
}
formattingOptions->color_index = color_index;
v = malloc(23*sizeof(char));
memset(v, 0, 23);
sprintf(v, "<font color=\"#%02x%02x%02x\">", colorDef->red, colorDef->green, colorDef->blue);
[_html appendBytes: v length: strlen(v)];
free(v);
}
// else if ([s hasPrefix: @"fcs"])
// {
// // ignore
// }
// else if ([s hasPrefix: @"fs"])
// {
// // ignore
// }
// else if ([s hasPrefix: @"fbidis"])
// {
// // ignore
// }
// else if ([s hasPrefix: @"fromhtml"])
// {
// // ignore
// }
// else if ([s hasPrefix: @"fromtext"])
// {
// // ignore
// }
else if ([s hasPrefix: @"f"] && [s length] > 1 && isdigit([s characterAtIndex: 1]))
{
RTFFontInfo *fontInfo;
int font_index;
font_index = [[s substringFromIndex: 1] intValue];
if (!formattingOptions)
continue;
if (formattingOptions->font_index >= 0 &&
font_index != formattingOptions->font_index)
{
[_html appendBytes: "</font>" length: 7];
}
formattingOptions->font_index = font_index;
fontInfo = [fontTable fontInfoAtIndex: font_index];
char *v = NULL;
if (fontInfo && fontInfo->name)
{
if ([fontInfo->name length] < 128)
{
int tag_size = 15 + [fontInfo->name length];
v = calloc(tag_size, sizeof(char));
snprintf(v, tag_size, "<font face=\"%s\">", [fontInfo->name UTF8String]);
}
else
{
NSLog(@"RTFHandler: Font %u has %d chars length, parse error? "
"Ignored", font_index, [fontInfo->name length]);
v = calloc(7, sizeof(char));
sprintf(v, "<font>");
}
}
else
{
// RTF badformed? We don't know about that font (font_index).
// Anyhow, we still open the html tag because in the future
// we will close it (e.g. when new font is used).
v = calloc(7, sizeof(char));
sprintf(v, "<font>");
}
if (fontInfo && fontInfo->charset)
{
if (fontInfo->charset == 1)
/* charset 1 is default charset */
formattingOptions->charset = NULL;
else {
NSNumber *key = [NSNumber numberWithUnsignedChar: fontInfo->charset];
formattingOptions->charset = NSMapGet(_charsets, key);
}
}
[_html appendBytes: v length: strlen(v)];
free(v);
}
else if ([s isEqualToString: @"i"] && formattingOptions)
{
[_html appendBytes: "<i>" length: 3];
formattingOptions->italic = YES;
}
else if ([s isEqualToString: @"i0"] && formattingOptions)
{
[_html appendBytes: "</i>" length: 4];
formattingOptions->italic = NO;
}
else if ([s isEqualToString: @"tab"])
{
[_html appendBytes: "&nbsp;&nbsp;" length: 12];
}
else if ([s isEqualToString: @"softline"] || [s isEqualToString: @"par"])
{
[_html appendBytes: "<br>" length: 4];
}
else if ([s isEqualToString: @"strike"] && formattingOptions)
{
[_html appendBytes: "<strike>" length: 8];
formattingOptions->strikethrough = YES;
}
else if ([s isEqualToString: @"strike0"] && formattingOptions)
{
[_html appendBytes: "</strike>" length: 9];
formattingOptions->strikethrough = NO;
}
else if ([s hasPrefix: @"u"] && [s length] > 1 &&
(isdigit([s characterAtIndex: 1]) || '-' == [s characterAtIndex: 1]))
{
int arg;
arg = [[s substringFromIndex: 1] intValue];
if (arg < 0)
// a negative value means a value greater than 32767
arg = 32767 - arg;
uch = (unichar) arg;
s = [NSString stringWithCharacters: &uch length: 1];
d = [s dataUsingEncoding: NSUTF8StringEncoding];
[_html appendData: d];
}
else if ([s isEqualToString: @"ul"] && formattingOptions)
{
[_html appendBytes: "<u>" length: 3];
formattingOptions->underline = YES;
}
else if (([s isEqualToString: @"ul0"] || [s isEqualToString: @"ulnone"])
&& formattingOptions)
{
[_html appendBytes: "</u>" length: 4];
formattingOptions->underline = NO;
case CW_ANSICPG:
parseAnsicpg(hasArg, arg, &defaultCharset);
break;
case CW_B:
parseB(self, hasArg, arg, formattingOptions);
break;
case CW_CF:
parseCf(self, hasArg, arg, formattingOptions, colorTable);
break;
case CW_COLORTBL:
parseColorTableWrapper(self, &colorTable);
break;
case CW_F:
parseF(self, hasArg, arg, formattingOptions, fontTable);
break;
case CW_FONTTBL:
parseFontTableWrapper(self, cw, &fontTable);
break;
case CW_I:
parseI(self, hasArg, arg, formattingOptions);
break;
case CW_PAR:
parsePar(self);
break;
case CW_PICT:
parsePictureWrapper(self, cw);
break;
case CW_SOFTLINE:
parseSoftline(self);
break;
case CW_STRIKE:
parseStrike(self, hasArg, arg, formattingOptions);
break;
case CW_STYLESHEET:
parseStyleSheetWrapper(self, cw);
break;
case CW_TAB:
parseTab(self);
break;
case CW_U:
parseU(self, hasArg, arg);
break;
case CW_UL:
parseUl(self, hasArg, arg, formattingOptions);
break;
case CW_ULNONE:
parseUl(self, YES, 0, formattingOptions);
break;
case CW_UNKNOWN:
default:
// do nothing
break;
}
// If a space delimits the control word, the space does not appear in the document.
@@ -1225,7 +1383,7 @@ const unsigned short ansicpg874[256] = {
formattingOptions->font_index = -1;
formattingOptions->color_index = -1;
formattingOptions->start_pos = [_html length];
formattingOptions->charset = default_charset;
formattingOptions->charset = defaultCharset;
[stack push: formattingOptions];
ADVANCE;
}