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Code cleanup. 

Add checking for invalid DBCS trailer bytes.
This commit is contained in:
Hidenori Takeshima 2000-09-26 00:37:32 +00:00 committed by Alexandre Julliard
parent 0691d74027
commit dc71c0c954
1 changed files with 100 additions and 34 deletions
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134
graphics/x11drv/codepage.c
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@ -18,6 +18,89 @@
DEFAULT_DEBUG_CHANNEL(text);
/***********************************************************************
* IsLegalDBCSChar for cp932/936/949/950
*/
static inline
int IsLegalDBCSChar_cp932( BYTE lead, BYTE trail )
{
return ( ( ( lead >= (BYTE)0x81 && lead <= (BYTE)0x9f ) ||
( lead >= (BYTE)0xe0 && lead <= (BYTE)0xfc ) ) &&
( ( trail >= (BYTE)0x40 && trail <= (BYTE)0x7e ) ||
( trail >= (BYTE)0x80 && trail <= (BYTE)0xfc ) ) );
}
static inline
int IsLegalDBCSChar_cp936( BYTE lead, BYTE trail )
{
return ( ( lead >= (BYTE)0x81 && lead <= (BYTE)0xfe ) &&
( trail >= (BYTE)0x40 && trail <= (BYTE)0xfe ) );
}
static inline
int IsLegalDBCSChar_cp949( BYTE lead, BYTE trail )
{
return ( ( lead >= (BYTE)0x81 && lead <= (BYTE)0xfe ) &&
( trail >= (BYTE)0x41 && trail <= (BYTE)0xfe ) );
}
static inline
int IsLegalDBCSChar_euckr( BYTE lead, BYTE trail )
{
return ( ( lead >= (BYTE)0xa1 && lead <= (BYTE)0xfe ) &&
( trail >= (BYTE)0xa1 && trail <= (BYTE)0xfe ) );
}
static inline
int IsLegalDBCSChar_cp950( BYTE lead, BYTE trail )
{
return ( ( lead >= (BYTE)0x81 && lead <= (BYTE)0xfe ) &&
( ( trail >= (BYTE)0x40 && trail <= (BYTE)0x7e ) ||
( trail >= (BYTE)0xa1 && trail <= (BYTE)0xfe ) ) );
}
/***********************************************************************
* DBCSCharToXChar2b for cp932/949
*/
static inline
void DBCSCharToXChar2b_cp932( XChar2b* pch, BYTE lead, BYTE trail )
{
unsigned int high, low;
high = (unsigned int)lead;
low = (unsigned int)trail;
if ( high <= 0x9f )
high = (high<<1) - 0xe0;
else
high = (high<<1) - 0x160;
if ( low < 0x9f )
{
high --;
if ( low < 0x7f )
low -= 0x1f;
else
low -= 0x20;
}
else
{
low -= 0x7e;
}
pch->byte1 = (unsigned char)high;
pch->byte2 = (unsigned char)low;
}
static inline
void DBCSCharToXChar2b_euckr( XChar2b* pch, BYTE lead, BYTE trail )
{
pch->byte1 = lead & (BYTE)0x7f;
pch->byte2 = trail & (BYTE)0x7f;
}
static WORD X11DRV_enum_subfont_charset_normal( UINT index )
{
@ -114,7 +197,6 @@ static XChar2b* X11DRV_unicode_to_char2b_cp932( fontObject* pfo,
BYTE *str;
BYTE *str_src;
UINT i;
UINT codepage = pfo->fi->codepage;
char ch = pfo->fs->default_char;
if (!(str2b = HeapAlloc( GetProcessHeap(), 0, count * sizeof(XChar2b) )))
@ -124,39 +206,17 @@ static XChar2b* X11DRV_unicode_to_char2b_cp932( fontObject* pfo,
HeapFree( GetProcessHeap(), 0, str2b );
return NULL;
}
WideCharToMultiByte( codepage, 0, lpwstr, count, str, count*2, &ch, NULL );
/* handle jisx0212.1990... */
WideCharToMultiByte( 932, 0, lpwstr, count, str, count*2, &ch, NULL );
str_src = str;
str2b_dst = str2b;
for (i = 0; i < count; i++, str_src++, str2b_dst++)
{
if ( ( *str_src >= (BYTE)0x80 && *str_src <= (BYTE)0x9f ) ||
( *str_src >= (BYTE)0xe0 && *str_src <= (BYTE)0xfc ) )
if ( IsLegalDBCSChar_cp932( *str_src, *(str_src+1) ) )
{
unsigned int high, low;
high = (unsigned int)*str_src;
low = (unsigned int)*(str_src+1);
if ( high <= 0x9f )
high = (high<<1) - 0xe0;
else
high = (high<<1) - 0x160;
if ( low < 0x9f )
{
high --;
if ( low < 0x7f )
low -= 0x1f;
else
low -= 0x20;
}
else
{
low -= 0x7e;
}
str2b_dst->byte1 = (unsigned char)high;
str2b_dst->byte2 = (unsigned char)low;
DBCSCharToXChar2b_cp932( str2b_dst, *str_src, *(str_src+1) );
str_src++;
}
else
@ -179,7 +239,6 @@ static XChar2b* X11DRV_unicode_to_char2b_cp936( fontObject* pfo,
return NULL;
}
static XChar2b* X11DRV_unicode_to_char2b_cp949( fontObject* pfo,
LPCWSTR lpwstr, UINT count )
{
@ -188,7 +247,6 @@ static XChar2b* X11DRV_unicode_to_char2b_cp949( fontObject* pfo,
BYTE *str;
BYTE *str_src;
UINT i;
UINT codepage = pfo->fi->codepage;
char ch = pfo->fs->default_char;
if (!(str2b = HeapAlloc( GetProcessHeap(), 0, count * sizeof(XChar2b) )))
@ -198,16 +256,24 @@ static XChar2b* X11DRV_unicode_to_char2b_cp949( fontObject* pfo,
HeapFree( GetProcessHeap(), 0, str2b );
return NULL;
}
WideCharToMultiByte( codepage, 0, lpwstr, count, str, count*2, &ch, NULL );
WideCharToMultiByte( 949, 0, lpwstr, count, str, count*2, &ch, NULL );
str_src = str;
str2b_dst = str2b;
for (i = 0; i < count; i++, str_src++, str2b_dst++)
{
if ( (*str_src) & (BYTE)0x80 )
if ( IsLegalDBCSChar_cp949( *str_src, *(str_src+1) ) )
{
str2b_dst->byte1 = (*str_src) & 0x7f;
str2b_dst->byte2 = (*(str_src+1)) & 0x7f;
if ( IsLegalDBCSChar_euckr( *str_src, *(str_src+1) ) )
{
DBCSCharToXChar2b_euckr( str2b_dst, *str_src, *(str_src+1) );
}
else
{
/* FIXME */
str2b_dst->byte1 = 0;
str2b_dst->byte2 = 0;
}
str_src++;
}
else