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/* Implementation of GNU Objective-C text coder object for use serializing
Copyright (C) 1994, 1995 Free Software Foundation, Inc.
Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
Date: July 1994
This file is part of the GNU Objective C Class 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 <objects/stdobjects.h>
#include <objects/TextCoder.h>
#include <objects/MemoryStream.h>
#include <objects/StdioStream.h>
#include <objects/objc-malloc.h>
#include <assert.h>
#define CONCRETE_FORMAT_VERSION 0
static BOOL debug_textcoder = NO;
@implementation TextCoder
+ (int) coderConcreteFormatVersion
{
return CONCRETE_FORMAT_VERSION;
}
/* Careful, this shouldn't contain newlines */
+ (const char *) coderSignature
{
return "GNU Objective C Class Library TextCoder";
}
- doInitOnStream: (Stream *)s isDecoding: (BOOL)f
{
[super doInitOnStream:s isDecoding:f];
indentation = 0;
return self;
}
#define XSTR(s) STR(s)
#define STR(s) #s
#define ENCODER_FORMAT(TYPE, CONVERSION) \
"%*s<%s> (" XSTR(TYPE) ") = %" XSTR(CONVERSION) "\n"
- (void) encodeValueOfSimpleType: (const char*)type
at: (const void*)d
withName: (const char *)name
{
if (!name)
name = "";
switch (*type)
{
case _C_LNG:
[stream writeFormat:"%*s<%s> (long) = %ld\n",
indentation, "", name, *(long*)d];
break;
case _C_ULNG:
[stream writeFormat:"%*s<%s> (unsigned long) = %lu\n",
indentation, "", name, *(unsigned long*)d];
break;
case _C_INT:
[stream writeFormat:"%*s<%s> (int) = %d\n",
indentation, "", name, *(int*)d];
break;
case _C_UINT:
[stream writeFormat:"%*s<%s> (unsigned int) = %u\n",
indentation, "", name, *(unsigned int*)d];
break;
case _C_SHT:
[stream writeFormat:"%*s<%s> (short) = %d\n",
indentation, "", name, (int)*(short*)d];
break;
case _C_USHT:
[stream writeFormat:"%*s<%s> (unsigned short) = %u\n",
indentation, "", name, (unsigned)*(unsigned short*)d];
break;
case _C_CHR:
[stream writeFormat:"%*s<%s> (char) = %c (0x%x)\n",
indentation, "", name, *(char*)d, (unsigned)*(char*)d];
break;
case _C_UCHR:
[stream writeFormat:"%*s<%s> (unsigned char) = 0x%x\n",
indentation, "", name, (unsigned)*(unsigned char*)d];
break;
case _C_FLT:
[stream writeFormat:"%*s<%s> (float) = %g\n",
indentation, "", name, *(float*)d];
break;
case _C_DBL:
[stream writeFormat:"%*s<%s> (double) = %g\n",
indentation, "", name, *(double*)d];
break;
case _C_CHARPTR:
[stream writeFormat:"%*s<%s> (char*) = \"%s\"\n",
indentation, "", name, *(char**)d];
break;
default:
[self error:"type %s not yet implemented", type];
}
}
#define DECODER_FORMAT(TYPE, CONVERSION) \
" <%a[^>]> (" XSTR(TYPE) ") = %" XSTR(CONVERSION) " \n"
#define DECODE_ERROR(TYPE) [self error:"bad format decoding " XSTR(TYPE)]
#define DECODE_DEBUG(TYPE, CONVERSION) \
if (debug_textcoder) \
[[StdioStream standardError] writeFormat:"got <%s> (%s) %" \
XSTR(CONVERSION) "\n", \
tmpname, \
XSTR(TYPE), *(TYPE*)d];
- (void) decodeValueOfSimpleType: (const char*)type
at: (void*)d
withName: (const char **)name
{
char *tmpname;
assert (d);
switch (*type)
{
case _C_LNG:
if ([stream readFormat:DECODER_FORMAT(long,l),
&tmpname, (long*)d] != 2)
DECODE_ERROR(long);
DECODE_DEBUG(long, l);
break;
case _C_ULNG:
if ([stream readFormat:DECODER_FORMAT(unsigned long, lu),
&tmpname, (unsigned long*)d] != 2)
DECODE_ERROR(unsigned long);
DECODE_DEBUG(unsigned long, lu);
break;
case _C_INT:
if ([stream readFormat:DECODER_FORMAT(int, d),
&tmpname, (int*)d] != 2)
DECODE_ERROR(int);
DECODE_DEBUG(int, d);
break;
case _C_UINT:
if ([stream readFormat:DECODER_FORMAT(unsigned int,u),
&tmpname, (unsigned int*)d] != 2)
DECODE_ERROR(unsigned int);
DECODE_DEBUG(unsigned int, u);
break;
case _C_SHT:
if ([stream readFormat:DECODER_FORMAT(short,hd),
&tmpname, (short*)d] != 2)
DECODE_ERROR(short);
DECODE_DEBUG(short, d);
break;
case _C_USHT:
if ([stream readFormat:DECODER_FORMAT(unsigned short,hu),
&tmpname, (unsigned short*)d] != 2)
DECODE_ERROR(unsigned short);
DECODE_DEBUG(unsigned short, u);
break;
case _C_CHR:
{
unsigned tmp;
if ([stream readFormat:" <%a[^>]> (char) = %*c (%x) \n",
&tmpname, &tmp] != 2)
DECODE_ERROR(char);
*(char*)d = (char)tmp;
DECODE_DEBUG(char, c);
break;
}
case _C_UCHR:
{
unsigned tmp;
if ([stream readFormat:DECODER_FORMAT(unsigned char,x),
&tmpname, &tmp] != 2)
DECODE_ERROR(unsigned char);
*(unsigned char*)d = (unsigned char)tmp;
DECODE_DEBUG(unsigned char, c);
break;
}
case _C_FLT:
if ([stream readFormat:DECODER_FORMAT(float,f),
&tmpname, (float*)d] != 2)
DECODE_ERROR(float);
DECODE_DEBUG(float, f);
break;
case _C_DBL:
if ([stream readFormat:DECODER_FORMAT(double,lf),
&tmpname, (double*)d] != 2)
DECODE_ERROR(double);
DECODE_DEBUG(double, f);
break;
case _C_CHARPTR:
if ([stream readFormat:" <%a[^>]> (char*) = \"%a[^\"]\" \n",
&tmpname, (char**)d] != 2)
DECODE_ERROR(char*);
DECODE_DEBUG(char*, s);
break;
default:
[self error:"type %s not yet implemented", type];
}
if (name && *name)
*name = tmpname;
else
(*objc_free)(tmpname);
}
- (void) encodeIndent
{
[stream writeFormat:"%*s {\n", indentation, ""];
indentation += 2;
}
- (void) encodeUnindent
{
indentation -= 2;
[stream writeFormat:"%*s }\n", indentation, ""];
}
- (void) decodeIndent
{
char *line;
char *lp;
lp = line = [stream readLine];
while (*lp == ' ') lp++;
if (*lp != '{')
[self error:"bad indent format, got \"%s\"", line];
}
- (void) decodeUnindent
{
char *line;
char *lp;
lp = line = [stream readLine];
while (*lp == ' ') lp++;
if (*lp != '}')
[self error:"bad unindent format, got \"%s\"", line];
}
- (void) encodeName: (const char*)n
{
if (n)
[stream writeFormat:"%*s<%s>\n", indentation, "", n];
else
[stream writeFormat:"%*s<NULL>\n", indentation, "", n];
}
/* Buffer is malloc'ed */
- (void) decodeName: (const char**)n
{
if (n)
{
if ([stream readFormat:" <%a[^>]> \n", n] != 1)
[self error:"bad format"];
if (debug_textcoder)
fprintf(stderr, "got name <%s>\n", *n);
}
else
{
[stream readFormat:" <%*[^>]> \n"];
}
}
- (void) encodeWithCoder: anEncoder
{
[self notImplemented:_cmd];
}
+ newWithCoder: aDecoder
{
[self notImplemented:_cmd];
return self;
}
@end
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