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yap-6.3/packages/PLStream/pl-string.c

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2008-12-22 12:02:22 +00:00
#include "pl-incl.h"
/********************************
* STRINGS *
*********************************/
#ifdef O_DEBUG
#define CHAR_INUSE 0x42
#define CHAR_FREED 0x41
char *
store_string(const char *s)
{ if ( s )
{ GET_LD
char *copy = (char *)allocHeap(strlen(s)+2);
*copy++ = CHAR_INUSE;
strcpy(copy, s);
return copy;
} else
{ return NULL;
}
}
void
remove_string(char *s)
{ if ( s )
{ GET_LD
assert(s[-1] == CHAR_INUSE);
s[-1] = CHAR_FREED;
freeHeap(s-1, strlen(s)+2);
}
}
#else /*O_DEBUG*/
char *
store_string(const char *s)
{ if ( s )
{ GET_LD
char *copy = (char *)allocHeap(strlen(s)+1);
strcpy(copy, s);
return copy;
} else
{ return NULL;
}
}
void
remove_string(char *s)
{ if ( s )
{ GET_LD
freeHeap(s, strlen(s)+1);
}
}
#endif /*O_DEBUG*/