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/* Copyright (C) 2010-2020 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (stdin_stream.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#ifdef _WIN32
#ifndef _XBOX
#include <windows.h>
#endif
#include <direct.h>
#else
#include <unistd.h>
#endif
#include <boolean.h>
#include <retro_environment.h>
#include <streams/stdin_stream.h>
#if (defined(_WIN32) && defined(_XBOX)) || defined(__WINRT__) || !defined(__PSL1GHT__) && defined(__PS3__)
size_t read_stdin(char *buf, size_t size)
{
/* Not implemented. */
return 0;
}
#elif defined(_WIN32)
size_t read_stdin(char *buf, size_t size)
{
DWORD i;
DWORD has_read = 0;
DWORD avail = 0;
bool echo = false;
HANDLE hnd = GetStdHandle(STD_INPUT_HANDLE);
if (hnd == INVALID_HANDLE_VALUE)
return 0;
/* Check first if we're a pipe
* (not console). */
/* If not a pipe, check if we're running in a console. */
if (!PeekNamedPipe(hnd, NULL, 0, NULL, &avail, NULL))
{
INPUT_RECORD recs[256];
bool has_key = false;
DWORD mode = 0;
DWORD has_read = 0;
if (!GetConsoleMode(hnd, &mode))
return 0;
if ((mode & (ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT))
&& !SetConsoleMode(hnd,
mode & ~(ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT)))
return 0;
/* Win32, Y U NO SANE NONBLOCK READ!? */
if (!PeekConsoleInput(hnd, recs,
sizeof(recs) / sizeof(recs[0]), &has_read))
return 0;
for (i = 0; i < has_read; i++)
{
/* Very crude, but should get the job done. */
if (recs[i].EventType == KEY_EVENT &&
recs[i].Event.KeyEvent.bKeyDown &&
(isgraph(recs[i].Event.KeyEvent.wVirtualKeyCode) ||
recs[i].Event.KeyEvent.wVirtualKeyCode == VK_RETURN))
{
has_key = true;
echo = true;
avail = size;
break;
}
}
if (!has_key)
{
FlushConsoleInputBuffer(hnd);
return 0;
}
}
if (!avail)
return 0;
if (avail > size)
avail = size;
if (!ReadFile(hnd, buf, avail, &has_read, NULL))
return 0;
for (i = 0; i < has_read; i++)
if (buf[i] == '\r')
buf[i] = '\n';
/* Console won't echo for us while in non-line mode,
* so do it manually ... */
if (echo)
{
HANDLE hnd_out = GetStdHandle(STD_OUTPUT_HANDLE);
if (hnd_out != INVALID_HANDLE_VALUE)
{
DWORD has_written;
WriteConsole(hnd_out, buf, has_read, &has_written, NULL);
}
}
return has_read;
}
#else
size_t read_stdin(char *buf, size_t size)
{
size_t has_read = 0;
while (size)
{
ssize_t ret = read(STDIN_FILENO, buf, size);
if (ret <= 0)
break;
buf += ret;
has_read += ret;
size -= ret;
}
return has_read;
}
#endif
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