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

    MODULE
	DYN.h

    DESCRIPTION
	Header File for ``Dynamic Strings''

    HISTORY
	29-09-94 b_noll created
	13-11-94 b_noll renamed fields

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

#ifndef DYN_H
#define DYN_H 1

/**************************************
	    Includes
**************************************/

#ifndef   EXEC_TYPES_H
#include <exec/types.h>
#endif /* EXEC_TYPES_H */

#include <stdarg.h>

/**************************************
	    Defines & Structures
**************************************/

struct _DSTR {
    int   Size;
    int   Length;
    UBYTE str[1];
}; /* struct DSTR */
#define DSTR struct _DSTR *
#define EmptyDyn NULL

/**************************************
	    Prototypes
**************************************/

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->Length=strlen(d->Str); KET_
#define DynErase(pstr) BRA_ DSTR d;if((d=*(pstr)))d->Length=d->Str[0]=0;    KET_
#define DynValue(pstr)  ((*(pstr))? ((*(pstr))->Str): "")
#define DynSize(pstr)   ((*(pstr))? ((*(pstr))->Size): 0)
#define DynLen(pstr)    ((*(pstr))? ((*(pstr))->Length): 0)

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

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