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Sweden-Number/dlls/kernel32/editline.c

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/*
* line edition function for Win32 console
*
* Copyright 2001 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wincon.h"
#include "wine/unicode.h"
#include "winnls.h"
#include "wine/debug.h"
#include "console_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(console);
struct WCEL_Context;
typedef struct
{
WCHAR val; /* vk or unicode char */
void (*func)(struct WCEL_Context* ctx);
} KeyEntry;
typedef struct
{
DWORD keyState; /* keyState (from INPUT_RECORD) to match */
BOOL chkChar; /* check vk or char */
const KeyEntry* entries; /* array of entries */
} KeyMap;
typedef struct WCEL_Context {
WCHAR* line; /* the line being edited */
size_t alloc; /* number of WCHAR in line */
unsigned len; /* number of chars in line */
unsigned ofs; /* offset for cursor in current line */
WCHAR* yanked; /* yanked line */
unsigned mark; /* marked point (emacs mode only) */
CONSOLE_SCREEN_BUFFER_INFO csbi; /* current state (initial cursor, window size, attribute) */
HANDLE hConIn;
HANDLE hConOut;
unsigned done : 1, /* to 1 when we're done with editing */
error : 1, /* to 1 when an error occurred in the editing */
can_wrap : 1; /* to 1 when multi-line edition can take place */
unsigned histSize;
unsigned histPos;
WCHAR* histCurr;
} WCEL_Context;
#if 0
static void WCEL_Dump(WCEL_Context* ctx, const char* pfx)
{
MESSAGE("%s: [line=%s[alloc=%u] ofs=%u len=%u start=(%d,%d) mask=%c%c%c]\n"
"\t\thist=(size=%u pos=%u curr=%s)\n"
"\t\tyanked=%s\n",
pfx, debugstr_w(ctx->line), ctx->alloc, ctx->ofs, ctx->len,
ctx->csbi.dwCursorPosition.X, ctx->csbi.dwCursorPosition.Y,
ctx->done ? 'D' : 'd', ctx->error ? 'E' : 'e', ctx->can_wrap ? 'W' : 'w',
ctx->histSize, ctx->histPos, debugstr_w(ctx->histCurr),
debugstr_w(ctx->yanked));
}
#endif
/* ====================================================================
*
* Console helper functions
*
* ====================================================================*/
static BOOL WCEL_Get(WCEL_Context* ctx, INPUT_RECORD* ir)
{
if (ReadConsoleInputW(ctx->hConIn, ir, 1, NULL)) return TRUE;
ERR("hmm bad situation\n");
ctx->error = 1;
return FALSE;
}
static inline void WCEL_Beep(WCEL_Context* ctx)
{
Beep(400, 300);
}
static inline BOOL WCEL_IsSingleLine(WCEL_Context* ctx, size_t len)
{
return ctx->csbi.dwCursorPosition.X + ctx->len + len <= ctx->csbi.dwSize.X;
}
static inline COORD WCEL_GetCoord(WCEL_Context* ctx, int ofs)
{
COORD c;
int len = ctx->csbi.dwSize.X - ctx->csbi.dwCursorPosition.X;
c.Y = ctx->csbi.dwCursorPosition.Y;
if (ofs >= len)
{
ofs -= len;
c.X = ofs % ctx->csbi.dwSize.X;
c.Y += 1 + ofs / ctx->csbi.dwSize.X;
}
else c.X = ctx->csbi.dwCursorPosition.X + ofs;
return c;
}
static inline void WCEL_Update(WCEL_Context* ctx, int beg, int len)
{
WriteConsoleOutputCharacterW(ctx->hConOut, &ctx->line[beg], len,
WCEL_GetCoord(ctx, beg), NULL);
FillConsoleOutputAttribute(ctx->hConOut, ctx->csbi.wAttributes, len,
WCEL_GetCoord(ctx, beg), NULL);
}
/* ====================================================================
*
* context manipulation functions
*
* ====================================================================*/
static BOOL WCEL_Grow(WCEL_Context* ctx, size_t len)
{
if (!WCEL_IsSingleLine(ctx, len) && !ctx->can_wrap)
{
FIXME("Mode doesn't allow to wrap. However, we should allow to overwrite current string\n");
return FALSE;
}
if (ctx->len + len >= ctx->alloc)
{
WCHAR* newline;
size_t newsize;
/* round up size to 32 byte-WCHAR boundary */
newsize = (ctx->len + len + 1 + 31) & ~31;
if (ctx->line)
newline = HeapReAlloc(GetProcessHeap(), 0, ctx->line, sizeof(WCHAR) * newsize);
else
newline = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * newsize);
if (!newline) return FALSE;
ctx->line = newline;
ctx->alloc = newsize;
}
return TRUE;
}
static void WCEL_DeleteString(WCEL_Context* ctx, int beg, int end)
{
unsigned str_len = end - beg;
COORD cbeg = WCEL_GetCoord(ctx, ctx->len - str_len);
COORD cend = WCEL_GetCoord(ctx, ctx->len);
CHAR_INFO ci;
if (end < ctx->len)
memmove(&ctx->line[beg], &ctx->line[end], (ctx->len - end) * sizeof(WCHAR));
/* we need to clean from ctx->len - str_len to ctx->len */
ci.Char.UnicodeChar = ' ';
ci.Attributes = ctx->csbi.wAttributes;
if (cbeg.Y == cend.Y)
{
/* partial erase of sole line */
CONSOLE_FillLineUniform(ctx->hConOut, cbeg.X, cbeg.Y,
cend.X - cbeg.X, &ci);
}
else
{
int i;
/* erase til eol on first line */
CONSOLE_FillLineUniform(ctx->hConOut, cbeg.X, cbeg.Y,
ctx->csbi.dwSize.X - cbeg.X, &ci);
/* completely erase all the others (full lines) */
for (i = cbeg.Y + 1; i < cend.Y; i++)
CONSOLE_FillLineUniform(ctx->hConOut, 0, i, ctx->csbi.dwSize.X, &ci);
/* erase from beginning of line until last pos on last line */
CONSOLE_FillLineUniform(ctx->hConOut, 0, cend.Y, cend.X, &ci);
}
ctx->len -= str_len;
WCEL_Update(ctx, 0, ctx->len);
ctx->line[ctx->len] = 0;
}
static void WCEL_InsertString(WCEL_Context* ctx, const WCHAR* str)
{
size_t len = lstrlenW(str);
if (!len || !WCEL_Grow(ctx, len)) return;
if (ctx->len > ctx->ofs)
memmove(&ctx->line[ctx->ofs + len], &ctx->line[ctx->ofs], (ctx->len - ctx->ofs) * sizeof(WCHAR));
memcpy(&ctx->line[ctx->ofs], str, len * sizeof(WCHAR));
ctx->len += len;
ctx->line[ctx->len] = 0;
WCEL_Update(ctx, ctx->ofs, ctx->len - ctx->ofs);
ctx->ofs += len;
}
static void WCEL_InsertChar(WCEL_Context* ctx, WCHAR c)
{
WCHAR buffer[2];
/* do not insert 0..31 control characters */
if (c < ' ' && c != '\t') return;
buffer[0] = c;
buffer[1] = 0;
WCEL_InsertString(ctx, buffer);
}
static void WCEL_FreeYank(WCEL_Context* ctx)
{
HeapFree(GetProcessHeap(), 0, ctx->yanked);
ctx->yanked = NULL;
}
static void WCEL_SaveYank(WCEL_Context* ctx, int beg, int end)
{
int len = end - beg;
if (len <= 0) return;
WCEL_FreeYank(ctx);
/* After WCEL_FreeYank ctx->yanked is empty */
ctx->yanked = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
if (!ctx->yanked) return;
memcpy(ctx->yanked, &ctx->line[beg], len * sizeof(WCHAR));
ctx->yanked[len] = 0;
}
/* FIXME NTDLL doesn't export iswalnum, and I don't want to link in msvcrt when most
* of the data lay in unicode lib
*/
static inline BOOL WCEL_iswalnum(WCHAR wc)
{
return get_char_typeW(wc) & (C1_ALPHA|C1_DIGIT|C1_LOWER|C1_UPPER);
}
static int WCEL_GetLeftWordTransition(WCEL_Context* ctx, int ofs)
{
ofs--;
while (ofs >= 0 && !WCEL_iswalnum(ctx->line[ofs])) ofs--;
while (ofs >= 0 && WCEL_iswalnum(ctx->line[ofs])) ofs--;
if (ofs >= 0) ofs++;
return max(ofs, 0);
}
static int WCEL_GetRightWordTransition(WCEL_Context* ctx, int ofs)
{
ofs++;
while (ofs <= ctx->len && WCEL_iswalnum(ctx->line[ofs])) ofs++;
while (ofs <= ctx->len && !WCEL_iswalnum(ctx->line[ofs])) ofs++;
return min(ofs, ctx->len);
}
static WCHAR* WCEL_GetHistory(WCEL_Context* ctx, int idx)
{
WCHAR* ptr;
if (idx == ctx->histSize - 1)
{
ptr = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(ctx->histCurr) + 1) * sizeof(WCHAR));
lstrcpyW(ptr, ctx->histCurr);
}
else
{
int len = CONSOLE_GetHistory(idx, NULL, 0);
if ((ptr = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
{
CONSOLE_GetHistory(idx, ptr, len);
}
}
return ptr;
}
static void WCEL_HistoryInit(WCEL_Context* ctx)
{
ctx->histPos = CONSOLE_GetNumHistoryEntries();
ctx->histSize = ctx->histPos + 1;
ctx->histCurr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WCHAR));
}
static void WCEL_MoveToHist(WCEL_Context* ctx, int idx)
{
WCHAR* data = WCEL_GetHistory(ctx, idx);
int len = lstrlenW(data) + 1;
/* save current line edition for recall when needed (FIXME seems broken to me) */
if (ctx->histPos == ctx->histSize - 1)
{
HeapFree(GetProcessHeap(), 0, ctx->histCurr);
ctx->histCurr = HeapAlloc(GetProcessHeap(), 0, (ctx->len + 1) * sizeof(WCHAR));
memcpy(ctx->histCurr, ctx->line, (ctx->len + 1) * sizeof(WCHAR));
}
/* need to clean also the screen if new string is shorter than old one */
WCEL_DeleteString(ctx, 0, ctx->len);
ctx->ofs = 0;
/* insert new string */
if (WCEL_Grow(ctx, len))
{
WCEL_InsertString(ctx, data);
HeapFree(GetProcessHeap(), 0, data);
ctx->histPos = idx;
}
}
static void WCEL_FindPrevInHist(WCEL_Context* ctx)
{
int startPos = ctx->histPos;
WCHAR* data;
unsigned int len, oldofs;
if (ctx->histPos && ctx->histPos == ctx->histSize) {
startPos--;
ctx->histPos--;
}
do {
data = WCEL_GetHistory(ctx, ctx->histPos);
if (ctx->histPos) ctx->histPos--;
else ctx->histPos = (ctx->histSize-1);
len = lstrlenW(data) + 1;
if ((len >= ctx->ofs) &&
(memcmp(ctx->line, data, ctx->ofs * sizeof(WCHAR)) == 0)) {
/* need to clean also the screen if new string is shorter than old one */
WCEL_DeleteString(ctx, 0, ctx->len);
if (WCEL_Grow(ctx, len))
{
oldofs = ctx->ofs;
ctx->ofs = 0;
WCEL_InsertString(ctx, data);
ctx->ofs = oldofs;
SetConsoleCursorPosition(ctx->hConOut, WCEL_GetCoord(ctx, ctx->ofs));
HeapFree(GetProcessHeap(), 0, data);
return;
}
}
} while (ctx->histPos != startPos);
return;
}
/* ====================================================================
*
* basic edition functions
*
* ====================================================================*/
static void WCEL_Done(WCEL_Context* ctx)
{
WCHAR nl = '\n';
if (!WCEL_Grow(ctx, 2)) return;
ctx->line[ctx->len++] = '\r';
ctx->line[ctx->len++] = '\n';
ctx->line[ctx->len] = 0;
WriteConsoleW(ctx->hConOut, &nl, 1, NULL, NULL);
ctx->done = 1;
}
static void WCEL_MoveLeft(WCEL_Context* ctx)
{
if (ctx->ofs > 0) ctx->ofs--;
}
static void WCEL_MoveRight(WCEL_Context* ctx)
{
if (ctx->ofs < ctx->len) ctx->ofs++;
}
static void WCEL_MoveToLeftWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs) ctx->ofs = new_ofs;
}
static void WCEL_MoveToRightWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs) ctx->ofs = new_ofs;
}
static void WCEL_MoveToBeg(WCEL_Context* ctx)
{
ctx->ofs = 0;
}
static void WCEL_MoveToEnd(WCEL_Context* ctx)
{
ctx->ofs = ctx->len;
}
static void WCEL_SetMark(WCEL_Context* ctx)
{
ctx->mark = ctx->ofs;
}
static void WCEL_ExchangeMark(WCEL_Context* ctx)
{
unsigned tmp;
if (ctx->mark > ctx->len) return;
tmp = ctx->ofs;
ctx->ofs = ctx->mark;
ctx->mark = tmp;
}
static void WCEL_CopyMarkedZone(WCEL_Context* ctx)
{
unsigned beg, end;
if (ctx->mark > ctx->len || ctx->mark == ctx->ofs) return;
if (ctx->mark > ctx->ofs)
{
beg = ctx->ofs; end = ctx->mark;
}
else
{
beg = ctx->mark; end = ctx->ofs;
}
WCEL_SaveYank(ctx, beg, end);
}
static void WCEL_TransposeChar(WCEL_Context* ctx)
{
WCHAR c;
if (!ctx->ofs || ctx->ofs == ctx->len) return;
c = ctx->line[ctx->ofs];
ctx->line[ctx->ofs] = ctx->line[ctx->ofs - 1];
ctx->line[ctx->ofs - 1] = c;
WCEL_Update(ctx, ctx->ofs - 1, 2);
ctx->ofs++;
}
static void WCEL_TransposeWords(WCEL_Context* ctx)
{
unsigned int left_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs),
right_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
if (left_ofs < ctx->ofs && right_ofs > ctx->ofs)
{
unsigned len_r = right_ofs - ctx->ofs;
unsigned len_l = ctx->ofs - left_ofs;
char* tmp = HeapAlloc(GetProcessHeap(), 0, len_r * sizeof(WCHAR));
if (!tmp) return;
memcpy(tmp, &ctx->line[ctx->ofs], len_r * sizeof(WCHAR));
memmove(&ctx->line[left_ofs + len_r], &ctx->line[left_ofs], len_l * sizeof(WCHAR));
memcpy(&ctx->line[left_ofs], tmp, len_r * sizeof(WCHAR));
HeapFree(GetProcessHeap(), 0, tmp);
WCEL_Update(ctx, left_ofs, len_l + len_r);
ctx->ofs = right_ofs;
}
}
static void WCEL_LowerCaseWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs)
{
unsigned int i;
for (i = ctx->ofs; i <= new_ofs; i++)
ctx->line[i] = tolowerW(ctx->line[i]);
WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
ctx->ofs = new_ofs;
}
}
static void WCEL_UpperCaseWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs)
{
unsigned int i;
for (i = ctx->ofs; i <= new_ofs; i++)
ctx->line[i] = toupperW(ctx->line[i]);
WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
ctx->ofs = new_ofs;
}
}
static void WCEL_CapitalizeWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs)
{
unsigned int i;
ctx->line[ctx->ofs] = toupperW(ctx->line[ctx->ofs]);
for (i = ctx->ofs + 1; i <= new_ofs; i++)
ctx->line[i] = tolowerW(ctx->line[i]);
WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
ctx->ofs = new_ofs;
}
}
static void WCEL_Yank(WCEL_Context* ctx)
{
WCEL_InsertString(ctx, ctx->yanked);
}
static void WCEL_KillToEndOfLine(WCEL_Context* ctx)
{
WCEL_SaveYank(ctx, ctx->ofs, ctx->len);
WCEL_DeleteString(ctx, ctx->ofs, ctx->len);
}
static void WCEL_KillMarkedZone(WCEL_Context* ctx)
{
unsigned beg, end;
if (ctx->mark > ctx->len || ctx->mark == ctx->ofs) return;
if (ctx->mark > ctx->ofs)
{
beg = ctx->ofs; end = ctx->mark;
}
else
{
beg = ctx->mark; end = ctx->ofs;
}
WCEL_SaveYank(ctx, beg, end);
WCEL_DeleteString(ctx, beg, end);
ctx->ofs = beg;
}
static void WCEL_DeletePrevChar(WCEL_Context* ctx)
{
if (ctx->ofs)
{
WCEL_DeleteString(ctx, ctx->ofs - 1, ctx->ofs);
ctx->ofs--;
}
}
static void WCEL_DeleteCurrChar(WCEL_Context* ctx)
{
if (ctx->ofs < ctx->len)
WCEL_DeleteString(ctx, ctx->ofs, ctx->ofs + 1);
}
static void WCEL_DeleteLeftWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs)
{
WCEL_DeleteString(ctx, new_ofs, ctx->ofs);
ctx->ofs = new_ofs;
}
}
static void WCEL_DeleteRightWord(WCEL_Context* ctx)
{
unsigned int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
if (new_ofs != ctx->ofs)
{
WCEL_DeleteString(ctx, ctx->ofs, new_ofs);
}
}
static void WCEL_MoveToPrevHist(WCEL_Context* ctx)
{
if (ctx->histPos) WCEL_MoveToHist(ctx, ctx->histPos - 1);
}
static void WCEL_MoveToNextHist(WCEL_Context* ctx)
{
if (ctx->histPos < ctx->histSize - 1) WCEL_MoveToHist(ctx, ctx->histPos + 1);
}
static void WCEL_MoveToFirstHist(WCEL_Context* ctx)
{
if (ctx->histPos != 0) WCEL_MoveToHist(ctx, 0);
}
static void WCEL_MoveToLastHist(WCEL_Context* ctx)
{
if (ctx->histPos != ctx->histSize - 1) WCEL_MoveToHist(ctx, ctx->histSize - 1);
}
static void WCEL_Redraw(WCEL_Context* ctx)
{
COORD c = WCEL_GetCoord(ctx, ctx->len);
CHAR_INFO ci;
WCEL_Update(ctx, 0, ctx->len);
ci.Char.UnicodeChar = ' ';
ci.Attributes = ctx->csbi.wAttributes;
CONSOLE_FillLineUniform(ctx->hConOut, c.X, c.Y, ctx->csbi.dwSize.X - c.X, &ci);
}
static void WCEL_RepeatCount(WCEL_Context* ctx)
{
#if 0
/* FIXME: wait until all console code is in kernel32 */
INPUT_RECORD ir;
unsigned repeat = 0;
while (WCEL_Get(ctx, &ir, FALSE))
{
if (ir.EventType != KEY_EVENT) break;
if (ir.Event.KeyEvent.bKeyDown)
{
if ((ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON)) != 0)
break;
if (ir.Event.KeyEvent.uChar.UnicodeChar < '0' ||
ir.Event.KeyEvent.uChar.UnicodeChar > '9')
break;
repeat = repeat * 10 + ir.Event.KeyEvent.uChar.UnicodeChar - '0';
}
WCEL_Get(ctx, &ir, TRUE);
}
FIXME("=> %u\n", repeat);
#endif
}
/* ====================================================================
*
* Key Maps
*
* ====================================================================*/
#define CTRL(x) ((x) - '@')
static const KeyEntry StdKeyMap[] =
{
{/*BACK*/0x08, WCEL_DeletePrevChar },
{/*RETURN*/0x0d, WCEL_Done },
{/*DEL*/127, WCEL_DeleteCurrChar },
{ 0, NULL }
};
static const KeyEntry Win32ExtraStdKeyMap[] =
{
{/*VK_F8*/ 0x77, WCEL_FindPrevInHist },
{ 0, NULL }
};
static const KeyEntry EmacsKeyMapCtrl[] =
{
{ CTRL('@'), WCEL_SetMark },
{ CTRL('A'), WCEL_MoveToBeg },
{ CTRL('B'), WCEL_MoveLeft },
/* C: done in server */
{ CTRL('D'), WCEL_DeleteCurrChar },
{ CTRL('E'), WCEL_MoveToEnd },
{ CTRL('F'), WCEL_MoveRight },
{ CTRL('G'), WCEL_Beep },
{ CTRL('H'), WCEL_DeletePrevChar },
/* I: meaningless (or tab ???) */
{ CTRL('J'), WCEL_Done },
{ CTRL('K'), WCEL_KillToEndOfLine },
{ CTRL('L'), WCEL_Redraw },
{ CTRL('M'), WCEL_Done },
{ CTRL('N'), WCEL_MoveToNextHist },
/* O; insert line... meaningless */
{ CTRL('P'), WCEL_MoveToPrevHist },
/* Q: [NIY] quoting... */
/* R: [NIY] search backwards... */
/* S: [NIY] search forwards... */
{ CTRL('T'), WCEL_TransposeChar },
{ CTRL('U'), WCEL_RepeatCount },
/* V: paragraph down... meaningless */
{ CTRL('W'), WCEL_KillMarkedZone },
{ CTRL('X'), WCEL_ExchangeMark },
{ CTRL('Y'), WCEL_Yank },
/* Z: meaningless */
{ 0, NULL }
};
static const KeyEntry EmacsKeyMapAlt[] =
{
{/*DEL*/127, WCEL_DeleteLeftWord },
{ '<', WCEL_MoveToFirstHist },
{ '>', WCEL_MoveToLastHist },
{ '?', WCEL_Beep },
{ 'b', WCEL_MoveToLeftWord },
{ 'c', WCEL_CapitalizeWord },
{ 'd', WCEL_DeleteRightWord },
{ 'f', WCEL_MoveToRightWord },
{ 'l', WCEL_LowerCaseWord },
{ 't', WCEL_TransposeWords },
{ 'u', WCEL_UpperCaseWord },
{ 'w', WCEL_CopyMarkedZone },
{ 0, NULL }
};
static const KeyEntry EmacsKeyMapExtended[] =
{
{/*RETURN*/ 0x0d, WCEL_Done },
{/*VK_PRIOR*/0x21, WCEL_MoveToPrevHist },
{/*VK_NEXT*/ 0x22, WCEL_MoveToNextHist },
{/*VK_END*/ 0x23, WCEL_MoveToEnd },
{/*VK_HOME*/ 0x24, WCEL_MoveToBeg },
{/*VK_RIGHT*/0x27, WCEL_MoveRight },
{/*VK_LEFT*/ 0x25, WCEL_MoveLeft },
{/*VK_DEL*/ 0x2e, WCEL_DeleteCurrChar },
{ 0, NULL }
};
static const KeyMap EmacsKeyMap[] =
{
{0x00000000, 1, StdKeyMap},
{0x00000001, 1, EmacsKeyMapAlt}, /* left alt */
{0x00000002, 1, EmacsKeyMapAlt}, /* right alt */
{0x00000004, 1, EmacsKeyMapCtrl}, /* left ctrl */
{0x00000008, 1, EmacsKeyMapCtrl}, /* right ctrl */
{0x00000100, 0, EmacsKeyMapExtended},
{0, 0, 0}
};
static const KeyEntry Win32KeyMapExtended[] =
{
{/*VK_LEFT*/ 0x25, WCEL_MoveLeft },
{/*VK_RIGHT*/0x27, WCEL_MoveRight },
{/*VK_HOME*/ 0x24, WCEL_MoveToBeg },
{/*VK_END*/ 0x23, WCEL_MoveToEnd },
{/*VK_UP*/ 0x26, WCEL_MoveToPrevHist },
{/*VK_DOWN*/ 0x28, WCEL_MoveToNextHist },
{/*VK_DEL*/ 0x2e, WCEL_DeleteCurrChar },
{ 0, NULL }
};
static const KeyEntry Win32KeyMapCtrlExtended[] =
{
{/*VK_LEFT*/ 0x25, WCEL_MoveToLeftWord },
{/*VK_RIGHT*/0x27, WCEL_MoveToRightWord },
{/*VK_END*/ 0x23, WCEL_KillToEndOfLine },
{ 0, NULL }
};
static const KeyMap Win32KeyMap[] =
{
{0x00000000, 1, StdKeyMap},
{0x00000000, 0, Win32ExtraStdKeyMap},
{0x00000100, 0, Win32KeyMapExtended},
{0x00000104, 0, Win32KeyMapCtrlExtended},
{0x00000108, 0, Win32KeyMapCtrlExtended},
{0, 0, 0}
};
#undef CTRL
/* ====================================================================
*
* Read line master function
*
* ====================================================================*/
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=%08lx\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);
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 & (ENHANCED_KEY|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;
}
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