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Sweden-Number/dlls/msvcrt/console.c

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