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https://github.com/open-simh/simtools.git
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45e3b4e500
Dismount command lost drive parameter in previous commit. Under windows, limit confusion by assigning pseudo-drive letters for images more carefully. Avoid letters used by Windows. Dir /detail wasn't reporting rab$b_fsz correctly. qualifier list keyword syntax error now reported correctly. Include Windows release .exes in git. Improve conditional compilation in compat.
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/* Timothe Litt February 2016 */
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/* This module contains compatibility code, currently just
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* to support Microsoft Windows.
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*
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* Microsoft deprecates sprintf, but doesn't supply standard
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* replacement until very recent IDEs.
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* Microsoft doesn't like fopen.
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* One needs to use a M$ call to translate system errors.
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*
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* Finding out about drive letter assignments is unique to windows.
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*/
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include "compat.h"
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#ifdef _WIN32
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#include <windows.h>
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#endif
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#if defined(_MSC_VER) && _MSC_VER < 1900
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int c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
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{
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int count = -1;
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if (size != 0)
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count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
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if (count == -1)
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count = _vscprintf(format, ap);
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return count;
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}
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int c99_snprintf(char *outBuf, size_t size, const char *format, ...)
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{
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int count;
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va_list ap;
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va_start(ap, format);
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count = c99_vsnprintf(outBuf, size, format, ap);
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va_end(ap);
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return count;
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}
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#endif
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#ifdef _MSC_VER
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FILE *openf( const char *filename, const char *mode ) {
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errno_t err;
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FILE *fd = NULL;
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err = fopen_s( &fd, filename, mode );
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if( err == 0 ) {
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return fd;
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}
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return NULL;
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}
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#endif
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#ifdef _WIN32
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TCHAR *w32_errstr( DWORD eno, ... ) {
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va_list ap;
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TCHAR *msg;
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if( eno == 0 )
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eno = GetLastError();
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va_start(ap,eno);
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if( FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM, NULL, eno, 0,
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(LPSTR)&msg, 1, &ap ) == 0 ) {
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msg = (TCHAR *)malloc( 32 );
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snprintf( msg, 32, "(%u)", eno );
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}
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va_end(ap);
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return msg;
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}
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char *driveFromLetter( const char *letter ) {
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DWORD rv = ERROR_INSUFFICIENT_BUFFER;
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size_t cs = 16;
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TCHAR *bufp = NULL;
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do {
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if( rv == ERROR_INSUFFICIENT_BUFFER ) {
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TCHAR *newp;
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cs *= 2;
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newp = (TCHAR *) realloc( bufp, cs );
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if( newp == NULL )
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break;
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bufp = newp;
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}
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rv = QueryDosDevice( letter, bufp, cs );
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if( rv == 0 ) {
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rv = GetLastError();
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continue;
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}
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return bufp;
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} while( rv == ERROR_INSUFFICIENT_BUFFER );
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free( bufp );
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return NULL;
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}
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#endif
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/* For ISO C compliance, ensure that there's something in this module */
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void dummy_compat ( void ) { return; }
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