mirror of
https://github.com/gnustep/libs-base.git
synced 2025-04-25 09:41:15 +00:00
b06def3114
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@2817 72102866-910b-0410-8b05-ffd578937521
290 lines
7.1 KiB
Objective-C
290 lines
7.1 KiB
Objective-C
/* Support functions for Unicode implementation
|
|
Copyright (C) 1997 Free Software Foundation, Inc.
|
|
|
|
Written by: Stevo Crvenkovski <stevo@btinternet.com>
|
|
Date: March 1997
|
|
|
|
This file is part of the GNUstep Base Library.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free
|
|
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <Foundation/NSString.h>
|
|
|
|
struct _ucc_ {unichar from; char to;};
|
|
|
|
#include "unicode/cyrillic.h"
|
|
#include "unicode/nextstep.h"
|
|
#include "unicode/caseconv.h"
|
|
#include "unicode/cop.h"
|
|
#include "unicode/decomp.h"
|
|
|
|
#define FALSE 0
|
|
#define TRUE 1
|
|
|
|
unichar encode_chartouni(char c, NSStringEncoding enc)
|
|
{
|
|
/* All that I could find in Next documentation
|
|
on NSNonLossyASCIIStringEncoding was <<forthcoming>>. */
|
|
if((enc==NSNonLossyASCIIStringEncoding)
|
|
|| (enc==NSASCIIStringEncoding)
|
|
|| (enc==NSISOLatin1StringEncoding))
|
|
return (unichar)((unsigned char)c);
|
|
|
|
if((enc==NSNEXTSTEPStringEncoding))
|
|
if((unsigned char)c<Next_conv_base)
|
|
return (unichar)((unsigned char)c);
|
|
else
|
|
return(Next_char_to_uni_table[(unsigned char)c - Next_conv_base]);
|
|
|
|
if((enc==NSCyrillicStringEncoding))
|
|
if((unsigned char)c<Cyrillic_conv_base)
|
|
return (unichar)((unsigned char)c);
|
|
else
|
|
return(Cyrillic_char_to_uni_table[(unsigned char)c - Cyrillic_conv_base]);
|
|
|
|
#if 0
|
|
if((enc==NSSymbolStringEncoding))
|
|
if((unsigned char)c<Symbol_conv_base)
|
|
return (unichar)((unsigned char)c);
|
|
else
|
|
return(Symbol_char_to_uni_table[(unsigned char)c - Symbol_conv_base]);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
char encode_unitochar(unichar u, NSStringEncoding enc)
|
|
{
|
|
int res;
|
|
int i=0;
|
|
|
|
if((enc==NSNonLossyASCIIStringEncoding)
|
|
|| (enc==NSASCIIStringEncoding))
|
|
if(u<128)
|
|
return (char)u;
|
|
else
|
|
return 0;
|
|
|
|
|
|
if((enc==NSISOLatin1StringEncoding))
|
|
if(u<256)
|
|
return (char)u;
|
|
else
|
|
return 0;
|
|
|
|
if((enc== NSNEXTSTEPStringEncoding))
|
|
if(u<(unichar)Next_conv_base)
|
|
return (char)u;
|
|
else
|
|
{
|
|
while(((res=u-Next_uni_to_char_table[i++].from)>0) & (i<Next_uni_to_char_table_size));
|
|
return res?0:Next_uni_to_char_table[--i].to;
|
|
}
|
|
|
|
if((enc==NSCyrillicStringEncoding))
|
|
if(u<(unichar)Cyrillic_conv_base)
|
|
return (char)u;
|
|
else
|
|
{
|
|
while(((res=u-Cyrillic_uni_to_char_table[i++].from)>0) & (i<Cyrillic_uni_to_char_table_size));
|
|
return res?0:Cyrillic_uni_to_char_table[--i].to;
|
|
}
|
|
|
|
#if 0
|
|
if((enc==NSSymbolStringEncoding))
|
|
if(u<(unichar)Symbol_conv_base)
|
|
return (char)u;
|
|
else
|
|
{
|
|
while(((res=u-Symbol_uni_to_char_table[i++].from)>0) & (i<Symbol_uni_to_char_table_size));
|
|
return res?'*':Symbol_uni_to_char_table[--i].to;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
unichar chartouni(char c)
|
|
{
|
|
static NSStringEncoding enc = GSUndefinedEncoding;
|
|
if (enc == 0) enc = [NSString defaultCStringEncoding];
|
|
return encode_chartouni(c, enc);
|
|
}
|
|
|
|
char unitochar(unichar u)
|
|
{
|
|
unsigned char res;
|
|
static NSStringEncoding enc = GSUndefinedEncoding;
|
|
if (enc == 0) enc = [NSString defaultCStringEncoding];
|
|
if((res=encode_unitochar(u, enc)))
|
|
return res;
|
|
else
|
|
return '*';
|
|
}
|
|
|
|
int strtoustr(unichar * u1,const char *s1,int size)
|
|
{
|
|
int count;
|
|
for(count=0;(s1[count]!=0)&(count<size);count++)
|
|
u1[count]=chartouni(s1[count]);
|
|
return count;
|
|
}
|
|
|
|
int ustrtostr(char *s2,unichar *u1,int size)
|
|
{
|
|
int count;
|
|
for(count=0;(u1[count]!=(unichar)0)&(count<size);count++)
|
|
s2[count]=unitochar(u1[count]);
|
|
return(count);
|
|
}
|
|
|
|
int encode_strtoustr(unichar * u1,const char *s1,int size, NSStringEncoding enc)
|
|
{
|
|
int count;
|
|
for(count=0;(s1[count]!=0)&(count<size);count++)
|
|
u1[count]=encode_chartouni(s1[count],enc);
|
|
return count;
|
|
}
|
|
|
|
int encode_ustrtostr(char *s2,unichar *u1,int size, NSStringEncoding enc)
|
|
{
|
|
int count;
|
|
for(count=0;(u1[count]!=(unichar)0)&(count<size);count++)
|
|
s2[count]=encode_unitochar(u1[count],enc);
|
|
return(count);
|
|
}
|
|
|
|
/* Be carefull if you use this. Unicode arrays returned by
|
|
-getCharacters methods are not zero terminated */
|
|
int
|
|
uslen (unichar *u)
|
|
{
|
|
int len = 0;
|
|
while (u[len] != 0)
|
|
{
|
|
if (u[++len] == 0)
|
|
return len;
|
|
++len;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
unichar uni_tolower(unichar ch)
|
|
{
|
|
int res;
|
|
int count=0;
|
|
while(((res=ch - t_tolower[count++][0])>0)&(count<t_len_tolower));
|
|
return res?ch:t_tolower[--count][1];
|
|
}
|
|
|
|
unichar uni_toupper(unichar ch)
|
|
{
|
|
int res;
|
|
int count=0;
|
|
while(((res=ch - t_toupper[count++][0])>0)&(count<t_len_toupper));
|
|
return res?ch:t_toupper[--count][1];
|
|
}
|
|
|
|
unsigned char uni_cop(unichar u)
|
|
{
|
|
unichar count,first,last,comp;
|
|
BOOL notfound;
|
|
|
|
first = 0;
|
|
last = uni_cop_table_size;
|
|
notfound = TRUE;
|
|
count=0;
|
|
|
|
if(u > (unichar)0x0080) // no nonspacing in ascii
|
|
{
|
|
while(notfound & (first <= last))
|
|
{
|
|
if(!(first==last))
|
|
{
|
|
count = (first + last) / 2;
|
|
comp=uni_cop_table[count].code;
|
|
if(comp < u)
|
|
first = count+1;
|
|
else
|
|
if(comp > u)
|
|
last = count-1;
|
|
else
|
|
notfound = FALSE;
|
|
}
|
|
else /* first==last */
|
|
{
|
|
if(u == uni_cop_table[first].code)
|
|
return uni_cop_table[first].cop;
|
|
return 0;
|
|
} /* else */
|
|
} /* while notfound ...*/
|
|
return notfound?0:uni_cop_table[count].cop;
|
|
}
|
|
else /* u is ascii */
|
|
return 0;
|
|
}
|
|
|
|
BOOL uni_isnonsp(unichar u)
|
|
{
|
|
#define TRUE 1
|
|
#define FALSE 0
|
|
// check is uni_cop good for this
|
|
if(uni_cop(u))
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
unichar *uni_is_decomp(unichar u)
|
|
{
|
|
unichar count,first,last,comp;
|
|
BOOL notfound;
|
|
|
|
first = 0;
|
|
last = uni_dec_table_size;
|
|
notfound = TRUE;
|
|
count=0;
|
|
|
|
if(u > (unichar)0x0080) // no composites in ascii
|
|
{
|
|
while(notfound & (first <= last))
|
|
{
|
|
if(!(first==last))
|
|
{
|
|
count = (first + last) / 2;
|
|
comp=uni_dec_table[count].code;
|
|
if(comp < u)
|
|
first = count+1;
|
|
else
|
|
if(comp > u)
|
|
last = count-1;
|
|
else
|
|
notfound = FALSE;
|
|
}
|
|
else /* first==last */
|
|
{
|
|
if(u == uni_dec_table[first].code)
|
|
return uni_dec_table[first].decomp;
|
|
return 0;
|
|
} /* else */
|
|
} /* while notfound ...*/
|
|
return notfound?0:uni_dec_table[count].decomp;
|
|
}
|
|
else /* u is ascii */
|
|
return 0;
|
|
}
|
|
|