/******************************************************************************

    MODULE
	DYN.h

    DESCRIPTION
	Header File for ``Dynamic Strings''

    HISTORY
	29-09-94 b_noll created

******************************************************************************/

#ifndef DYN_H
#define DYN_H 1

#include <stdarg.h>

struct _DSTR {
    int   len;
    int   use;
    char  str[1];
}; /* struct DSTR */
#define DSTR struct _DSTR *

#ifndef TRUE
#define BOOL int
#endif

#define EmptyDyn NULL

void DynInit	(DSTR *pstr);
void DynClear	(DSTR *pstr);
void DynDelete	(DSTR *pstr);
void DynReset	(DSTR *pstr);
void DynErase	(DSTR *pstr);
char*DynValue	(DSTR *pstr);
int  DynSize	(DSTR *pstr);
int  DynLen	(DSTR *pstr);
BOOL DynDel	(DSTR *pstr, int pos, int chars);
BOOL DynExpand	(DSTR *pstr, int max);
BOOL DynIns	(DSTR *pstr, const char *src, int pos);
BOOL DynCat	(DSTR *pstr, const char *src);
BOOL DynCpy	(DSTR *pstr, const char *src);
BOOL DynSCpy	(DSTR *pstr, const char *src);
BOOL DynDIns	(DSTR *pstr, DSTR *src, int pos);
BOOL DynDCat	(DSTR *pstr, DSTR *src);
BOOL DynDCpy	(DSTR *pstr, DSTR *src);
BOOL DynDSCpy	(DSTR *pstr, DSTR *src);
BOOL vDynAppend (DSTR *pstr, int num, va_list adds);
BOOL vDynPrintf (DSTR *pstr, const char *tplt, va_list args);
int  DynPutc	(DSTR *pstr, int chr);
BOOL DynGetFile (DSTR *pstr, const char *name);

#ifdef STREAM /* ---- Really so ? */
BOOL DynGIns	(DSTR *pstr, int pos, STREAM instream, char *(read)(STREAM));
#endif

#ifndef NO_DYNSTR_MACROS
#define BRA_ do{
#define KET_ }while(0)

#define DynInit(pstr)   *(pstr) = EmptyDyn
#define DynDelete(pstr) DynClear(pstr)
#define DynClear(pstr) BRA_ DSTR d;if((d=*(pstr)))free(d);*(pstr)=EmptyDyn;KET_
#define DynReset(pstr) BRA_ DSTR d;if((d=*(pstr)))d->use=strlen(d->str);   KET_
#define DynErase(pstr) BRA_ DSTR d;if((d=*(pstr)))d->use=d->str[0]=0;      KET_
#define DynValue(pstr)  ((*(pstr))? ((*(pstr))->str): "")
#define DynSize(pstr)   ((*(pstr))? ((*(pstr))->len): 0)
#define DynLen(pstr)    ((*(pstr))? ((*(pstr))->use): 0)

#endif /* !NO_DYNSTR_MACROS */
#endif /* !DYN_H */

/******************************************************************************
*****  END DYN.h
******************************************************************************/