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If love is run from an existing console window in Windows, it will use that for stdout (when console mode is enabled via love.conf or --console) rather than creating a new console.

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This commit is contained in:
Alex Szpakowski
2015-02-11 15:40:22 -04:00
parent 320ec8b472
commit d82d2c93b6
1 changed files with 48 additions and 15 deletions
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src/modules/love/love.cpp
+48 -15
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@@ -250,44 +250,77 @@ int luaopen_love(lua_State * L)
#ifdef LOVE_LEGENDARY_CONSOLE_IO_HACK #ifdef LOVE_LEGENDARY_CONSOLE_IO_HACK
// Mostly taken from the Windows 8.1 SDK's VersionHelpers.h.
static bool IsWindowsVistaOrGreater()
{
OSVERSIONINFOEXW osvi = {sizeof(osvi), 0, 0, 0, 0, {0}, 0, 0};
osvi.dwMajorVersion = HIBYTE(_WIN32_WINNT_VISTA);
osvi.dwMinorVersion = LOBYTE(_WIN32_WINNT_VISTA);
osvi.wServicePackMajor = 0;
DWORDLONG majorversionmask = VerSetConditionMask(0, VER_MAJORVERSION, VER_GREATER_EQUAL);
DWORDLONG versionmask = VerSetConditionMask(majorversionmask, VER_MINORVERSION, VER_GREATER_EQUAL);
DWORDLONG mask = VerSetConditionMask(versionmask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, mask) != FALSE;
}
int w__openConsole(lua_State *L) int w__openConsole(lua_State *L)
{ {
static bool is_open = false; static bool is_open = false;
if (is_open) if (is_open)
return 0; {
love::luax_pushboolean(L, is_open);
return 1;
}
is_open = true; is_open = true;
if (GetConsoleWindow() != NULL || AllocConsole() == 0) // FIXME: we don't call AttachConsole in Windows XP because it seems to
return 0; // break later AllocConsole calls if it fails. A better workaround might be
// possible, but it's hard to find a WinXP system to test on these days...
if (!IsWindowsVistaOrGreater() || !AttachConsole(ATTACH_PARENT_PROCESS))
{
// Create our own console if we can't attach to an existing one.
if (!AllocConsole())
{
is_open = false;
love::luax_pushboolean(L, is_open);
return 1;
}
const int MAX_CONSOLE_LINES = 5000; SetConsoleTitle(TEXT("LOVE Console"));
CONSOLE_SCREEN_BUFFER_INFO console_info;
// Set size. const int MAX_CONSOLE_LINES = 5000;
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &console_info); CONSOLE_SCREEN_BUFFER_INFO console_info;
console_info.dwSize.Y = MAX_CONSOLE_LINES;
SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), console_info.dwSize);
SetConsoleTitle(TEXT("LOVE Console")); // Set size.
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &console_info);
console_info.dwSize.Y = MAX_CONSOLE_LINES;
SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), console_info.dwSize);
}
FILE * fp; FILE *fp;
// Redirect stdout. // Redirect stdout.
fp = freopen("CONOUT$", "w", stdout); fp = freopen("CONOUT$", "w", stdout);
if (L && fp == NULL) if (L && fp == NULL)
luaL_error(L, "Console redirection of stdout failed."); return luaL_error(L, "Console redirection of stdout failed.");
// Redirect stdin. // Redirect stdin.
fp = freopen("CONIN$", "r", stdin); fp = freopen("CONIN$", "r", stdin);
if (L && fp == NULL) if (L && fp == NULL)
luaL_error(L, "Console redirection of stdin failed."); return luaL_error(L, "Console redirection of stdin failed.");
// Redirect stderr. // Redirect stderr.
fp = freopen("CONOUT$", "w", stderr); fp = freopen("CONOUT$", "w", stderr);
if (L && fp == NULL) if (L && fp == NULL)
luaL_error(L, "Console redirection of stderr failed."); return luaL_error(L, "Console redirection of stderr failed.");
return 0; love::luax_pushboolean(L, is_open);
return 1;
} }
#endif // LOVE_LEGENDARY_CONSOLE_IO_HACK #endif // LOVE_LEGENDARY_CONSOLE_IO_HACK