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/*
Copyright (C) 1998,2000 by Jorrit Tyberghein
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 <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include "cssysdef.h"
#include "csutil/parser.h"
// A string containing white spaces (' ', '\t', '\n', '\r')
static const char *kWhiteSpace = " \t\n\r";
static char last_offender[255];
static int parser_line;
char* csGetLastOffender () { return last_offender; }
// XXX: Here we have a problem: the parser_line variable is static and
// therefor not shared across plugins, because the real fix (moving everything
// into a class) takes time, we'll just always return -1 now...
//int csGetParserLine () { return parser_line; }
int csGetParserLine() { return -1; }
void csResetParserLine () { parser_line = 1; }
long csGetObject (char **buf, csTokenVector * tokens, char **name, char **data)
{
csSkipCharacters (buf, kWhiteSpace);
// skip comment lines.
while (**buf == ';')
{
*buf = strchr (*buf, '\n');
parser_line++;
csSkipCharacters (buf, kWhiteSpace);
}
if (!**buf) // at end of file
return CS_PARSERR_EOF;
// find the token.
// for now just use brute force. Improve later.
int i=0;
for (i=0; i < tokens->Length ()-1; i++)
{
if (!strncasecmp (tokens->Get (i)->token, *buf, strlen (tokens->Get (i)->token)))
{
break;
}
}
if (i+1 == tokens->Length ())
{
char *p = strchr (*buf, '\n');
if (p) *p = 0;
strcpy (last_offender, *buf);
return CS_PARSERR_TOKENNOTFOUND;
}
// skip the token
*buf += strlen (tokens->Get (i)->token);
csSkipCharacters (buf, kWhiteSpace);
// get optional name
*name = csGetSubText (buf, '\'', '\''); // single quotes
csSkipCharacters (buf, kWhiteSpace);
// get optional data
if (**buf == '=') // An assignment rather than a command/object.
*data = csGetAssignmentText (buf);
else
*data = csGetSubText (buf, '(', ')');
return tokens->Get (i)->id;
}
long csGetCommand (char **buf, csTokenVector * tokens, char **params)
{
char *name;
return csGetObject (buf, tokens, &name, params);
}
void csSkipCharacters (char **buf, const char *toSkip)
{
char ch;
while ((ch = **buf) != 0)
{
if (ch == '\n') parser_line++;
if (strchr (toSkip, ch) == NULL)
return;
++*buf; // skip this character
}
// we must be at the end of the buffer if we get here
}
char *csGetSubText (char **buf, char open, char close)
{
if (**buf == 0 || **buf != open)
return 0;
++*buf; // skip opening delimiter
char *result = *buf;
// now find the closing delimiter
char theChar;
long skip = 1;
if (open == close) // we cant nest identical delimiters
open = 0;
while ((theChar = **buf) != 0)
{
if (theChar == open)
++skip;
if (theChar == close)
{
if (--skip == 0)
{
**buf = 0; // null terminate the result string
++*buf; // move past the closing delimiter
break;
}
}
++*buf; // try next character
}
return result;
}
char *csGetAssignmentText (char **buf)
{
++*buf; // skip the '='
csSkipCharacters (buf, kWhiteSpace);
char *result = *buf;
// now, we need to find the next whitespace to end the data
char theChar;
while ((theChar = **buf) != 0)
{
if (theChar <= 0x20) // space and control chars
break;
++*buf;
}
**buf = 0; // null terminate it
if (theChar) // skip the terminator
++*buf;
return result;
}
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