242 lines
6.5 KiB
C
242 lines
6.5 KiB
C
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/***
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*printf.h - print formatted
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*
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* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines w4*printf() - print formatted data
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* defines w4v*printf() - print formatted output, get data from an
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* argument ptr instead of explicit args.
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*
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*Revision History:
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* 09-02-83 RN original sprintf
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* 06-17-85 TC rewrote to use new varargs macros, and to be vsprintf
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* 04-13-87 JCR added const to declaration
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* 11-07-87 JCR Multi-thread support
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* 12-11-87 JCR Added "_LOAD_DS" to declaration
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* 05-27-88 PHG Merged DLL and normal versions
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* 06-13-88 JCR Fake _iob entry is now static so that other routines
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* can assume _iob entries are in DGROUP.
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* 08-25-88 GJF Define MAXSTR to be INT_MAX (from LIMITS.H).
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* 06-06-89 JCR 386 mthread support
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* 08-18-89 GJF Clean up, now specific to OS/2 2.0 (i.e., 386 flat
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* model). Also fixed copyright and indents.
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* 02-16-90 GJF Fixed copyright
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*
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*******************************************************************************/
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#include <stdarg.h>
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#include <limits.h>
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#include <windows.h>
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#include "w4io.h"
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#if defined(_W4PRINTF_)
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static long fh;
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// extern long GetStdHandle(long);
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// extern void WriteFile(long fh, char *s, long cch, long * pcchret, long);
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# define _PRINTF_
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#elif defined(_W4DPRINTF_)
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# define _pwritechar _dwritechar
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# define _pflushbuf _dflushbuf
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# define w4printf w4dprintf
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# define w4vprintf w4vdprintf
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# define _PRINTF_
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#elif defined(_W4SPRINTF_)
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# define _pwritechar _swritechar
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# define w4printf w4sprintf
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# define w4vprintf w4vsprintf
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#elif defined(_W4WCSPRINTF_)
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# define _TCHAR_ wchar_t
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# define _PBUF_ pwcbuf
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# define _PSTART_ pwcstart
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# define w4printf w4wcsprintf
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# define w4vprintf w4vwcsprintf
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# define _pwritechar _wwritechar
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#else
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# error configuration problem
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#endif
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#ifndef _TCHAR_
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# define _TCHAR_ char
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# define _PBUF_ pchbuf
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# define _PSTART_ pchstart
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#endif
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#ifdef _PRINTF_
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# ifndef FLAT
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# define OutputDebugStringA OutputDebugString
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# endif
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int _cdecl _pflushbuf(struct w4io *f);
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# define SPR(a)
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# define MAXSTR 128
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#else
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# define SPR(a) a,
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# define MAXSTR INT_MAX
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#endif
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void _cdecl _pwritechar(int ch, int num, struct w4io *f, int *pcchwritten);
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int _cdecl w4vprintf(SPR(_TCHAR_ *string) const char *format, va_list arglist);
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/***
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*int w4printf(format, ...) - print formatted data
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*
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*Purpose:
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* Prints formatted data using the format string to
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* format data and getting as many arguments as called for
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* Sets up a w4io so file i/o operations can be used.
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* w4iooutput does the real work here
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*
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*Entry:
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* char *format - format string to control data format/number
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* of arguments followed by list of arguments, number and type
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* controlled by format string
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*
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*Exit:
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* returns number of characters written
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*
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*Exceptions:
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*
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*******************************************************************************/
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int _cdecl
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w4printf(SPR(_TCHAR_ *string) const char *format, ...)
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/*
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* 'PRINT', 'F'ormatted
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*/
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{
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va_list arglist;
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va_start(arglist, format);
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return(w4vprintf(SPR(string) format, arglist));
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}
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/***
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*int w4vprintf(format, arglist) - print formatted data from arg ptr
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*
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*Purpose:
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* Prints formatted data, but gets data from an argument pointer.
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* Sets up a w4io so file i/o operations can be used, make string look
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* like a huge buffer to it, but _flsbuf will refuse to flush it if it
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* fills up. Appends '\0' to make it a true string.
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*
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* Multi-thread: (1) Since there is no stream, this routine must never try
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* to get the stream lock (i.e., there is no stream lock either). (2)
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* Also, since there is only one staticly allocated 'fake' iob, we must
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* lock/unlock to prevent collisions.
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*
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*Entry:
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* char *format - format string, describes format of data
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* va_list arglist - varargs argument pointer
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*
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*Exit:
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* returns number of characters written
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*
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*Exceptions:
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*
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*******************************************************************************/
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int _cdecl
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w4vprintf(SPR(_TCHAR_ *string) const char *format, va_list arglist)
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/*
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* 'V'ariable argument 'PRINT', 'F'ormatted
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*/
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{
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struct w4io outfile;
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register int retval;
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#ifdef _PRINTF_
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char string[MAXSTR + 1]; // leave room for null termination
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#else
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int dummy;
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#endif
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#ifdef _W4PRINTF_
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long ldummy;
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if (fh == 0 || fh == -1)
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{
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ldummy = -11; // C7 bug workaround
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if ((fh = (long)GetStdHandle(ldummy)) == 0 || fh == -1)
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{
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OutputDebugStringA("GetStdHandle in " __FILE__ " failed\n");
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return(-1);
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}
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}
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#endif
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outfile._PBUF_ = outfile._PSTART_ = string;
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outfile.cchleft = MAXSTR;
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outfile.writechar = _pwritechar;
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retval = w4iooutput(&outfile, format, arglist);
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#ifdef _PRINTF_
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if (_pflushbuf(&outfile) == -1) {
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return(-1);
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}
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#else
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_pwritechar('\0', 1, &outfile, &dummy);
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#endif
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return(retval);
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}
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void _cdecl _pwritechar(int ch, int num, struct w4io *f, int *pcchwritten)
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{
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//printf(" char: ch=%c, cnt=%d, cch=%d\n", ch, num, *pcchwritten);
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while (num-- > 0) {
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#ifdef _PRINTF_
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if (f->cchleft < 2 && _pflushbuf(f) == -1) {
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*pcchwritten = -1;
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return;
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}
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#endif
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#ifdef _W4DPRINTF_
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# ifndef FLAT
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if (ch == '\n')
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{
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*f->_PBUF_++ = '\r';
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f->cchleft--;
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(*pcchwritten)++;
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}
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# endif
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#endif
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*f->_PBUF_++ = (char) ch;
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f->cchleft--;
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(*pcchwritten)++;
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}
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}
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#ifdef _PRINTF_
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int _cdecl _pflushbuf(struct w4io *f)
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{
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int cch;
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if (cch = (f->pchbuf - f->pchstart))
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{
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#ifdef _W4DPRINTF_
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*f->pchbuf = '\0'; // null terminate
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OutputDebugStringA(f->pchstart);
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#else
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long cchret;
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//*f->pchbuf = '\0'; // null terminate
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//printf("%d chars: \"%s\"\n", cch, f->pchstart);
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WriteFile((HANDLE)fh, f->pchstart, cch, &cchret, 0);
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if (cch != cchret)
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{
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OutputDebugString("WriteFile in " __FILE__ " failed\n");
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return(-1);
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}
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#endif
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f->pchbuf -= cch; // reset pointer
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f->cchleft += cch; // reset count
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}
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return(0);
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}
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#endif // _PRINTF_
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