WCHAR* CONSOLE_Readline(HANDLE hConsoleIn)
{
WCEL_Context ctx;
INPUT_RECORD ir;
const KeyMap* km;
const KeyEntry* ke;
unsigned ofs;
void (*func)(struct WCEL_Context* ctx);
DWORD ks;
int use_emacs;
memset(&ctx, 0, sizeof(ctx));
ctx.hConIn = hConsoleIn;
WCEL_HistoryInit(&ctx);
if (!CONSOLE_GetEditionMode(hConsoleIn, &use_emacs))
use_emacs = 0;
if ((ctx.hConOut = CreateFileA("CONOUT$", GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE ||
!GetConsoleScreenBufferInfo(ctx.hConOut, &ctx.csbi))
return NULL;
ctx.can_wrap = (GetConsoleMode(ctx.hConOut, &ks) && (ks & ENABLE_WRAP_AT_EOL_OUTPUT)) ? 1 : 0;
if (!WCEL_Grow(&ctx, 1))
{
CloseHandle(ctx.hConOut);
return NULL;
}
ctx.line[0] = 0;
/* EPP WCEL_Dump(&ctx, "init"); */
while (!ctx.done && !ctx.error && WCEL_Get(&ctx, &ir))
{
if (ir.EventType != KEY_EVENT) continue;
TRACE("key%s repeatCount=%u, keyCode=%02x scanCode=%02x char=%02x keyState=%08x\n",
ir.Event.KeyEvent.bKeyDown ? "Down" : "Up ", ir.Event.KeyEvent.wRepeatCount,
ir.Event.KeyEvent.wVirtualKeyCode, ir.Event.KeyEvent.wVirtualScanCode,
ir.Event.KeyEvent.uChar.UnicodeChar, ir.Event.KeyEvent.dwControlKeyState);
if (!ir.Event.KeyEvent.bKeyDown) continue;
/* EPP WCEL_Dump(&ctx, "before func"); */
ofs = ctx.ofs;
/* mask out some bits which don't interest us */
ks = ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON|ENHANCED_KEY);
func = NULL;
for (km = (use_emacs) ? EmacsKeyMap : Win32KeyMap; km->entries != NULL; km++)
{
if (km->keyState != ks)
continue;
if (km->chkChar)
{
for (ke = &km->entries[0]; ke->func != 0; ke++)
if (ke->val == ir.Event.KeyEvent.uChar.UnicodeChar) break;
}
else
{
for (ke = &km->entries[0]; ke->func != 0; ke++)
if (ke->val == ir.Event.KeyEvent.wVirtualKeyCode) break;
}
if (ke->func)
{
func = ke->func;
break;
}
}
if (func)
(func)(&ctx);
else if (!(ir.Event.KeyEvent.dwControlKeyState & LEFT_ALT_PRESSED))
WCEL_InsertChar(&ctx, ir.Event.KeyEvent.uChar.UnicodeChar);
else TRACE("Dropped event\n");
/* EPP WCEL_Dump(&ctx, "after func"); */
if (ctx.ofs != ofs)
SetConsoleCursorPosition(ctx.hConOut, WCEL_GetCoord(&ctx, ctx.ofs));
}
if (ctx.error)
{
HeapFree(GetProcessHeap(), 0, ctx.line);
ctx.line = NULL;
}
WCEL_FreeYank(&ctx);
if (ctx.line)
CONSOLE_AppendHistory(ctx.line);
CloseHandle(ctx.hConOut);
HeapFree(GetProcessHeap(), 0, ctx.histCurr);
return ctx.line;
}
WCHAR* CONSOLE_Readline(HANDLE hConsoleIn, BOOL can_pos_cursor)
{
WCEL_Context ctx;
INPUT_RECORD ir;
const KeyMap* km;
const KeyEntry* ke;
unsigned ofs;
void (*func)(struct WCEL_Context* ctx);
DWORD mode, input_mode, ks;
int use_emacs;
memset(&ctx, 0, sizeof(ctx));
ctx.hConIn = hConsoleIn;
WCEL_HistoryInit(&ctx);
if (!CONSOLE_GetEditionMode(hConsoleIn, &use_emacs))
use_emacs = 0;
if ((ctx.hConOut = CreateFileA("CONOUT$", GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE ||
!GetConsoleScreenBufferInfo(ctx.hConOut, &ctx.csbi))
return NULL;
if (!GetConsoleMode(hConsoleIn, &mode)) mode = 0;
input_mode = mode;
ctx.shall_echo = (mode & ENABLE_ECHO_INPUT) ? 1 : 0;
ctx.insert = (mode & (ENABLE_INSERT_MODE|ENABLE_EXTENDED_FLAGS)) == (ENABLE_INSERT_MODE|ENABLE_EXTENDED_FLAGS) ? 1 : 0;
if (!GetConsoleMode(ctx.hConOut, &mode)) mode = 0;
ctx.can_wrap = (mode & ENABLE_WRAP_AT_EOL_OUTPUT) ? 1 : 0;
ctx.can_pos_cursor = can_pos_cursor;
GetConsoleCursorInfo(ctx.hConOut, &ctx.cinfo);
if (!WCEL_Grow(&ctx, 1))
{
CloseHandle(ctx.hConOut);
return NULL;
}
ctx.line[0] = 0;
/* EPP WCEL_Dump(&ctx, "init"); */
while (!ctx.done && !ctx.error && WCEL_Get(&ctx, &ir))
{
if (ir.EventType != KEY_EVENT) continue;
TRACE("key%s repeatCount=%u, keyCode=%02x scanCode=%02x char=%02x keyState=%08x\n",
ir.Event.KeyEvent.bKeyDown ? "Down" : "Up ", ir.Event.KeyEvent.wRepeatCount,
ir.Event.KeyEvent.wVirtualKeyCode, ir.Event.KeyEvent.wVirtualScanCode,
ir.Event.KeyEvent.uChar.UnicodeChar, ir.Event.KeyEvent.dwControlKeyState);
if (!ir.Event.KeyEvent.bKeyDown) continue;
/* EPP WCEL_Dump(&ctx, "before func"); */
ofs = ctx.ofs;
/* mask out some bits which don't interest us */
ks = ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON|ENHANCED_KEY);
func = NULL;
for (km = (use_emacs) ? EmacsKeyMap : Win32KeyMap; km->entries != NULL; km++)
{
if (km->keyState != ks)
continue;
if (km->chkChar)
{
for (ke = &km->entries[0]; ke->func != 0; ke++)
if (ke->val == ir.Event.KeyEvent.uChar.UnicodeChar) break;
}
else
{
for (ke = &km->entries[0]; ke->func != 0; ke++)
if (ke->val == ir.Event.KeyEvent.wVirtualKeyCode) break;
}
if (ke->func)
{
func = ke->func;
break;
}
}
GetConsoleMode(hConsoleIn, &mode);
if (input_mode != mode)
{
input_mode = mode;
ctx.insertkey = 0;
}
ctx.insert = (mode & (ENABLE_INSERT_MODE|ENABLE_EXTENDED_FLAGS)) ==
(ENABLE_INSERT_MODE|ENABLE_EXTENDED_FLAGS);
if (ctx.insertkey)
ctx.insert = !ctx.insert;
if (func)
(func)(&ctx);
else if (!(ir.Event.KeyEvent.dwControlKeyState & LEFT_ALT_PRESSED))
WCEL_InsertChar(&ctx, ir.Event.KeyEvent.uChar.UnicodeChar);
else TRACE("Dropped event\n");
/* EPP WCEL_Dump(&ctx, "after func"); */
if (!ctx.shall_echo) continue;
if (ctx.can_pos_cursor)
{
if (ctx.ofs != ofs)
SetConsoleCursorPosition(ctx.hConOut, WCEL_GetCoord(&ctx, ctx.ofs));
}
else if (!ctx.done && !ctx.error)
{
DWORD last;
/* erase previous chars */
WCEL_WriteNChars(&ctx, '\b', ctx.last_rub);
/* write chars up to cursor */
ctx.last_rub = WCEL_WriteConsole(&ctx, 0, ctx.ofs);
/* write chars past cursor */
last = ctx.last_rub + WCEL_WriteConsole(&ctx, ctx.ofs, ctx.len - ctx.ofs);
if (last < ctx.last_max) /* ctx.line has been shortened, erase */
{
WCEL_WriteNChars(&ctx, ' ', ctx.last_max - last);
WCEL_WriteNChars(&ctx, '\b', ctx.last_max - last);
ctx.last_max = last;
}
else ctx.last_max = last;
/* reposition at cursor */
WCEL_WriteNChars(&ctx, '\b', last - ctx.last_rub);
}
}
if (ctx.error)
{
HeapFree(GetProcessHeap(), 0, ctx.line);
ctx.line = NULL;
}
WCEL_FreeYank(&ctx);
if (ctx.line)
CONSOLE_AppendHistory(ctx.line);
CloseHandle(ctx.hConOut);
HeapFree(GetProcessHeap(), 0, ctx.histCurr);
return ctx.line;
}
