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/***
*sprintf.c - print formatted to string
*
* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines sprintf() and _snprintf() - print formatted data to string
*
*Revision History:
* 09-02-83 RN initial version
* 04-13-87 JCR added const to declaration
* 06-24-87 JCR (1) Made declaration conform to ANSI prototype and use
* the va_ macros; (2) removed SS_NE_DS conditionals.
* 11-07-87 JCR Multi-thread support
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 05-27-88 PHG Merged DLL and normal versions
* 06-13-88 JCR Fake _iob entry is now static so that other routines
* can assume _iob entries are in DGROUP.
* 08-25-88 GJF Define MAXSTR to be INT_MAX (from LIMITS.H).
* 06-06-89 JCR 386 mthread support
* 08-18-89 GJF Clean up, now specific to OS/2 2.0 (i.e., 386 flat
* model). Also fixed copyright and indents.
* 02-16-90 GJF Fixed copyright
* 03-19-90 GJF Made calling type _CALLTYPE2, added #include
* <cruntime.h> and removed #include <register.h>.
* 07-23-90 SBM Replaced <assertm.h> by <assert.h>
* 10-03-90 GJF New-style function declarator.
* 09-24-91 JCR Added _snprintf()
*
*******************************************************************************/
#include <cruntime.h>
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
#include <internal.h>
#include <limits.h>
#include <os2dll.h>
#define MAXSTR INT_MAX
/***
#ifndef _COUNT_
*int sprintf(string, format, ...) - print formatted data to string
#else
*int _snprintf(string, cnt, format, ...) - print formatted data to string
#endif
*
*Purpose:
* Prints formatted data to the using the format string to
* format data and getting as many arguments as called for
* Sets up a FILE so file i/o operations can be used, make
* string look like a huge buffer to it, but _flsbuf will
* refuse to flush it if it fills up. Appends '\0' to make
* it a true string. _output does the real work here
*
* Allocate the 'fake' _iob[] entry statically instead of on
* the stack so that other routines can assume that _iob[]
* entries are in are in DGROUP and, thus, are near.
*
#ifdef _COUNT_
* The _snprintf() flavor takes a count argument that is
* the max number of bytes that should be written to the
* user's buffer.
#endif
*
* Multi-thread: (1) Since there is no stream, this routine must
* never try to get the stream lock (i.e., there is no stream
* lock either). (2) Also, since there is only one statically
* allocated 'fake' iob, we must lock/unlock to prevent collisions.
*
*Entry:
* char *string - pointer to place to put output
#ifdef _COUNT_
* size_t count - max number of bytes to put in buffer
#endif
* char *format - format string to control data format/number
* of arguments followed by list of arguments, number and type
* controlled by format string
*
*Exit:
* returns number of characters printed
*
*Exceptions:
*
*******************************************************************************/
#ifndef _COUNT_
int _CALLTYPE2 sprintf (
char *string,
const char *format,
...
)
#else
int _CALLTYPE2 _snprintf (
char *string,
size_t count,
const char *format,
...
)
#endif
{
FILE str;
REG1 FILE *outfile = &str;
va_list arglist;
REG2 int retval;
va_start(arglist, format);
assert(string != NULL);
assert(format != NULL);
outfile->_flag = _IOWRT|_IOSTRG;
outfile->_ptr = outfile->_base = string;
#ifndef _COUNT_
outfile->_cnt = MAXSTR;
#else
outfile->_cnt = count;
#endif
retval = _output(outfile,format,arglist);
_putc_lk('\0',outfile); /* no-lock version */
return(retval);
}
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