371 lines
10 KiB
C
371 lines
10 KiB
C
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/*
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* msvcrt.dll console functions
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*
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* Copyright 2000 Jon Griffiths
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*
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* Note: init and free don't need MT locking since they are called at DLL
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* (de)attachment time, which is syncronised for us
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*/
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#include "msvcrt.h"
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#include "wincon.h"
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DEFAULT_DEBUG_CHANNEL(msvcrt);
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/* MT */
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extern CRITICAL_SECTION MSVCRT_console_cs;
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#define LOCK_CONSOLE EnterCriticalSection(&MSVCRT_console_cs)
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#define UNLOCK_CONSOLE LeaveCriticalSection(&MSVCRT_console_cs)
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static HANDLE MSVCRT_console_in = INVALID_HANDLE_VALUE;
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static HANDLE MSVCRT_console_out= INVALID_HANDLE_VALUE;
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static int __MSVCRT_console_buffer = MSVCRT_EOF;
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/* INTERNAL: Initialise console handles */
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void MSVCRT_init_console(void)
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{
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TRACE(":Opening console handles\n");
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MSVCRT_console_in = GetStdHandle(STD_INPUT_HANDLE);
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/* FIXME: Should be initialised with:
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* CreateFileA("CONIN$", GENERIC_READ, FILE_SHARE_READ,
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* NULL, OPEN_EXISTING, 0, (HANDLE)NULL);
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*/
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MSVCRT_console_out= CreateFileA("CONOUT$", GENERIC_WRITE, FILE_SHARE_WRITE,
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NULL, OPEN_EXISTING, 0, (HANDLE)NULL);
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if ((MSVCRT_console_in == INVALID_HANDLE_VALUE) ||
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(MSVCRT_console_out== INVALID_HANDLE_VALUE))
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WARN(":Console handle Initialisation FAILED!\n");
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}
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/* INTERNAL: Free console handles */
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void MSVCRT_free_console(void)
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{
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TRACE(":Closing console handles\n");
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CloseHandle(MSVCRT_console_in);
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CloseHandle(MSVCRT_console_out);
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}
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/*********************************************************************
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* _cputs (MSVCRT.@)
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*/
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int __cdecl MSVCRT__cputs(const char * str)
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{
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DWORD count;
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int retval = MSVCRT_EOF;
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LOCK_CONSOLE;
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if (WriteConsoleA(MSVCRT_console_out, str, strlen(str), &count, NULL)
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&& count == 1)
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retval = 0;
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UNLOCK_CONSOLE;
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return retval;
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}
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/*********************************************************************
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* _getch (MSVCRT.@)
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*/
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int __cdecl MSVCRT__getch(void)
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{
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int retval = MSVCRT_EOF;
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LOCK_CONSOLE;
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if (__MSVCRT_console_buffer != MSVCRT_EOF)
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{
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retval = __MSVCRT_console_buffer;
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__MSVCRT_console_buffer = MSVCRT_EOF;
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}
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else
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{
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INPUT_RECORD ir;
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DWORD count;
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DWORD mode = 0;
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GetConsoleMode(MSVCRT_console_in, &mode);
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if(mode)
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SetConsoleMode(MSVCRT_console_in, 0);
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do {
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if (ReadConsoleInputA(MSVCRT_console_in, &ir, 1, &count))
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{
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/* Only interested in ASCII chars */
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if (ir.EventType == KEY_EVENT &&
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ir.Event.KeyEvent.bKeyDown &&
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ir.Event.KeyEvent.uChar.AsciiChar)
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{
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retval = ir.Event.KeyEvent.uChar.AsciiChar;
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break;
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}
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}
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else
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break;
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} while(1);
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if (mode)
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SetConsoleMode(MSVCRT_console_in, mode);
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}
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UNLOCK_CONSOLE;
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return retval;
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}
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/*********************************************************************
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* _putch (MSVCRT.@)
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*/
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int __cdecl MSVCRT__putch(int c)
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{
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int retval = MSVCRT_EOF;
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DWORD count;
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LOCK_CONSOLE;
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if (WriteConsoleA(MSVCRT_console_out, &c, 1, &count, NULL) && count == 1)
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retval = c;
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UNLOCK_CONSOLE;
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return retval;
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}
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/*********************************************************************
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* _getche (MSVCRT.@)
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*/
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int __cdecl MSVCRT__getche(void)
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{
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int retval;
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LOCK_CONSOLE;
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retval = MSVCRT__getch();
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if (retval != MSVCRT_EOF)
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retval = MSVCRT__putch(retval);
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UNLOCK_CONSOLE;
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return retval;
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}
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/*********************************************************************
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* _cgets (MSVCRT.@)
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*/
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char *__cdecl MSVCRT__cgets(char *str)
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{
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char *buf = str + 2;
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int c;
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str[1] = 0; /* Length */
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/* FIXME: No editing of string supported */
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LOCK_CONSOLE;
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do
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{
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if (str[1] >= str[0] || (str[1]++, c = MSVCRT__getche()) == MSVCRT_EOF || c == '\n')
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break;
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*buf++ = c & 0xff;
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} while (1);
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UNLOCK_CONSOLE;
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*buf = '\0';
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return str + 2;
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}
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/*********************************************************************
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* _ungetch (MSVCRT.@)
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*/
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int __cdecl MSVCRT__ungetch(int c)
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{
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int retval = MSVCRT_EOF;
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LOCK_CONSOLE;
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if (c != MSVCRT_EOF && __MSVCRT_console_buffer == MSVCRT_EOF)
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retval = __MSVCRT_console_buffer = c;
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UNLOCK_CONSOLE;
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return retval;
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}
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/*********************************************************************
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* _cscanf (MSVCRT.@)
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*/
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int __cdecl MSVCRT__cscanf( const char * format, ... )
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{
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/* NOTE: If you extend this function, extend MSVCRT_fscanf in file.c too */
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int rd = 0;
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int nch;
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va_list ap;
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if (!*format) return 0;
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WARN("\"%s\": semi-stub\n", format);
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va_start(ap, format);
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LOCK_CONSOLE;
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nch = MSVCRT__getch();
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while (*format) {
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if (*format == ' ') {
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/* skip whitespace */
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while ((nch!=MSVCRT_EOF) && isspace(nch))
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nch = MSVCRT__getch();
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}
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else if (*format == '%') {
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int st = 0;
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format++;
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switch(*format) {
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case 'd': { /* read an integer */
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int*val = va_arg(ap, int*);
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int cur = 0;
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/* skip initial whitespace */
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while ((nch!=MSVCRT_EOF) && isspace(nch))
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nch = MSVCRT__getch();
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/* get sign and first digit */
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if (nch == '-') {
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nch = MSVCRT__getch();
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if (isdigit(nch))
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cur = -(nch - '0');
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else break;
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} else {
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if (isdigit(nch))
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cur = nch - '0';
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else break;
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}
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nch = MSVCRT__getch();
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/* read until no more digits */
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while ((nch!=MSVCRT_EOF) && isdigit(nch)) {
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cur = cur*10 + (nch - '0');
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nch = MSVCRT__getch();
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}
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st = 1;
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*val = cur;
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}
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break;
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case 'f': { /* read a float */
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float*val = va_arg(ap, float*);
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float cur = 0;
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/* skip initial whitespace */
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while ((nch!=MSVCRT_EOF) && isspace(nch))
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nch = MSVCRT__getch();
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/* get sign and first digit */
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if (nch == '-') {
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nch = MSVCRT__getch();
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if (isdigit(nch))
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cur = -(nch - '0');
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else break;
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} else {
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if (isdigit(nch))
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cur = nch - '0';
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else break;
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}
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/* read until no more digits */
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while ((nch!=MSVCRT_EOF) && isdigit(nch)) {
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cur = cur*10 + (nch - '0');
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nch = MSVCRT__getch();
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}
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if (nch == '.') {
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/* handle decimals */
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float dec = 1;
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nch = MSVCRT__getch();
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while ((nch!=MSVCRT_EOF) && isdigit(nch)) {
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dec /= 10;
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cur += dec * (nch - '0');
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nch = MSVCRT__getch();
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}
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}
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st = 1;
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*val = cur;
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}
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break;
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case 's': { /* read a word */
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char*str = va_arg(ap, char*);
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char*sptr = str;
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/* skip initial whitespace */
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while ((nch!=MSVCRT_EOF) && isspace(nch))
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nch = MSVCRT__getch();
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/* read until whitespace */
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while ((nch!=MSVCRT_EOF) && !isspace(nch)) {
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*sptr++ = nch; st++;
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nch = MSVCRT__getch();
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}
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/* terminate */
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*sptr = 0;
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TRACE("read word: %s\n", str);
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}
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break;
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default: FIXME("unhandled: %%%c\n", *format);
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}
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if (st) rd++;
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else break;
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}
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else {
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/* check for character match */
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if (nch == *format)
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nch = MSVCRT__getch();
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else break;
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}
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format++;
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}
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if (nch != MSVCRT_EOF)
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MSVCRT__ungetch(nch);
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UNLOCK_CONSOLE;
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va_end(ap);
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TRACE("returning %d\n", rd);
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return rd;
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}
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/*********************************************************************
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* _kbhit (MSVCRT.@)
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*/
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int __cdecl MSVCRT__kbhit(void)
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{
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int retval = 0;
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LOCK_CONSOLE;
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if (__MSVCRT_console_buffer != MSVCRT_EOF)
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retval = 1;
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else
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{
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/* FIXME: There has to be a faster way than this in Win32.. */
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INPUT_RECORD *ir = NULL;
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DWORD count = 0, i;
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GetNumberOfConsoleInputEvents(MSVCRT_console_in, &count);
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if (count && (ir = MSVCRT_malloc(count * sizeof(INPUT_RECORD))) &&
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PeekConsoleInputA(MSVCRT_console_in, ir, count, &count))
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for(i = 0; i < count - 1; i++)
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{
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if (ir[i].EventType == KEY_EVENT &&
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ir[i].Event.KeyEvent.bKeyDown &&
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ir[i].Event.KeyEvent.uChar.AsciiChar)
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{
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retval = 1;
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break;
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}
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}
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if (ir)
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MSVCRT_free(ir);
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}
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UNLOCK_CONSOLE;
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return retval;
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}
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extern int snprintf(char *, int, const char *, ...);
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/*********************************************************************
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* _cprintf (MSVCRT.@)
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*/
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int __cdecl MSVCRT__cprintf( const char * format, ... )
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{
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char buf[2048], *mem = buf;
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int written, resize = sizeof(buf), retval;
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va_list valist;
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va_start( valist, format );
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/* There are two conventions for snprintf failing:
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* Return -1 if we truncated, or
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* Return the number of bytes that would have been written
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* The code below handles both cases
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*/
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while ((written = snprintf( mem, resize, format, valist )) == -1 ||
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written > resize)
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{
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resize = (written == -1 ? resize * 2 : written + 1);
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if (mem != buf)
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MSVCRT_free (mem);
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if (!(mem = (char *)MSVCRT_malloc(resize)))
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return MSVCRT_EOF;
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va_start( valist, format );
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}
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va_end(valist);
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LOCK_CONSOLE;
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retval = MSVCRT__cputs( mem );
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UNLOCK_CONSOLE;
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if (mem != buf)
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MSVCRT_free (mem);
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return retval;
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}
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