dlls/kernel/editline.c

   1 /*
   2  * line edition function for Win32 console
   3  *
   4  * Copyright 2001 Eric Pouech
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <stdarg.h>
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wincon.h"
  30 #include "wine/unicode.h"
  31 #include "winnls.h"
  32 #include "wine/debug.h"
  33 #include "console_private.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(console);
  36
  37 struct WCEL_Context;
  38
  39 typedef struct
  40 {
  41     WCHAR                       val;            /* vk or unicode char */
  42     void                        (*func)(struct WCEL_Context* ctx);
  43 } KeyEntry;
  44
  45 typedef struct
  46 {
  47     DWORD                       keyState;       /* keyState (from INPUT_RECORD) to match */
  48     BOOL                        chkChar;        /* check vk or char */
  49     KeyEntry*                   entries;        /* array of entries */
  50 } KeyMap;
  51
  52 typedef struct WCEL_Context {
  53     WCHAR*                      line;           /* the line being edited */
  54     size_t                      alloc;          /* number of WCHAR in line */
  55     unsigned                    len;            /* number of chars in line */
  56     unsigned                    ofs;            /* offset for cursor in current line */
  57     WCHAR*                      yanked;         /* yanked line */
  58     unsigned                    mark;           /* marked point (emacs mode only) */
  59     CONSOLE_SCREEN_BUFFER_INFO  csbi;           /* current state (initial cursor, window size, attribute) */
  60     HANDLE                      hConIn;
  61     HANDLE                      hConOut;
  62     unsigned                    done : 1,       /* to 1 when we're done with editing */
  63                                 error : 1,      /* to 1 when an error occurred in the editing */
  64                                 can_wrap : 1;   /* to 1 when multi-line edition can take place */
  65     unsigned                    histSize;
  66     unsigned                    histPos;
  67     WCHAR*                      histCurr;
  68 } WCEL_Context;
  69
  70 #if 0
  71 static void WCEL_Dump(WCEL_Context* ctx, const char* pfx)
  72 {
  73     MESSAGE("%s: [line=%s[alloc=%u] ofs=%u len=%u start=(%d,%d) mask=%c%c%c]\n"
  74             "\t\thist=(size=%u pos=%u curr=%s)\n"
  75             "\t\tyanked=%s\n",
  76             pfx, debugstr_w(ctx->line), ctx->alloc, ctx->ofs, ctx->len,
  77             ctx->csbi.dwCursorPosition.X, ctx->csbi.dwCursorPosition.Y,
  78             ctx->done ? 'D' : 'd', ctx->error ? 'E' : 'e', ctx->can_wrap ? 'W' : 'w',
  79             ctx->histSize, ctx->histPos, debugstr_w(ctx->histCurr),
  80             debugstr_w(ctx->yanked));
  81 }
  82 #endif
  83
  84 /* ====================================================================
  85  *
  86  * Console helper functions
  87  *
  88  * ====================================================================*/
  89
  90 static BOOL WCEL_Get(WCEL_Context* ctx, INPUT_RECORD* ir)
  91 {
  92     if (ReadConsoleInputW(ctx->hConIn, ir, 1, NULL)) return TRUE;
  93     ERR("hmm bad situation\n");
  94     ctx->error = 1;
  95     return FALSE;
  96 }
  97
  98 static inline void WCEL_Beep(WCEL_Context* ctx)
  99 {
 100     Beep(400, 300);
 101 }
 102
 103 static inline BOOL WCEL_IsSingleLine(WCEL_Context* ctx, size_t len)
 104 {
 105     return ctx->csbi.dwCursorPosition.X + ctx->len + len <= ctx->csbi.dwSize.X;
 106 }
 107
 108 static inline COORD WCEL_GetCoord(WCEL_Context* ctx, int ofs)
 109 {
 110     COORD       c;
 111     unsigned    len = ctx->csbi.dwSize.X - ctx->csbi.dwCursorPosition.X;
 112
 113     c.Y = ctx->csbi.dwCursorPosition.Y;
 114     if (ofs >= len)
 115     {
 116         ofs -= len;
 117         c.X = ofs % ctx->csbi.dwSize.X;
 118         c.Y += 1 + ofs / ctx->csbi.dwSize.X;
 119     }
 120     else c.X = ctx->csbi.dwCursorPosition.X + ofs;
 121     return c;
 122 }
 123
 124 static inline void WCEL_Update(WCEL_Context* ctx, int beg, int len)
 125 {
 126     WriteConsoleOutputCharacterW(ctx->hConOut, &ctx->line[beg], len,
 127                                  WCEL_GetCoord(ctx, beg), NULL);
 128     FillConsoleOutputAttribute(ctx->hConOut, ctx->csbi.wAttributes, len,
 129                                WCEL_GetCoord(ctx, beg), NULL);
 130 }
 131
 132 /* ====================================================================
 133  *
 134  * context manipulation functions
 135  *
 136  * ====================================================================*/
 137
 138 static BOOL WCEL_Grow(WCEL_Context* ctx, size_t len)
 139 {
 140     if (!WCEL_IsSingleLine(ctx, len) && !ctx->can_wrap)
 141     {
 142         FIXME("Mode doesn't allow to wrap. However, we should allow to overwrite current string\n");
 143         return FALSE;
 144     }
 145
 146     if (ctx->len + len >= ctx->alloc)
 147     {
 148         WCHAR*  newline;
 149         size_t  newsize;
 150
 151         /* round up size to 32 byte-WCHAR boundary */
 152         newsize = (ctx->len + len + 1 + 31) & ~31;
 153         newline = HeapReAlloc(GetProcessHeap(), 0, ctx->line, sizeof(WCHAR) * newsize);
 154         if (!newline) return FALSE;
 155         ctx->line = newline;
 156         ctx->alloc = newsize;
 157     }
 158     return TRUE;
 159 }
 160
 161 static void WCEL_DeleteString(WCEL_Context* ctx, int beg, int end)
 162 {
 163     unsigned    str_len = end - beg;
 164     COORD       cbeg = WCEL_GetCoord(ctx, ctx->len - str_len);
 165     COORD       cend = WCEL_GetCoord(ctx, ctx->len);
 166     CHAR_INFO   ci;
 167
 168     if (end < ctx->len)
 169         memmove(&ctx->line[beg], &ctx->line[end], (ctx->len - end) * sizeof(WCHAR));
 170     /* we need to clean from ctx->len - str_len to ctx->len */
 171
 172     ci.Char.UnicodeChar = ' ';
 173     ci.Attributes = ctx->csbi.wAttributes;
 174
 175     if (cbeg.Y == cend.Y)
 176     {
 177         /* partial erase of sole line */
 178         CONSOLE_FillLineUniform(ctx->hConOut, cbeg.X, cbeg.Y,
 179                                 cend.X - cbeg.X, &ci);
 180     }
 181     else
 182     {
 183         int         i;
 184         /* erase til eol on first line */
 185         CONSOLE_FillLineUniform(ctx->hConOut, cbeg.X, cbeg.Y,
 186                                 ctx->csbi.dwSize.X - cbeg.X, &ci);
 187         /* completly erase all the others (full lines) */
 188         for (i = cbeg.Y + 1; i < cend.Y; i++)
 189             CONSOLE_FillLineUniform(ctx->hConOut, 0, i, ctx->csbi.dwSize.X, &ci);
 190         /* erase from beg of line until last pos on last line */
 191         CONSOLE_FillLineUniform(ctx->hConOut, 0, cend.Y, cend.X, &ci);
 192     }
 193     ctx->len -= str_len;
 194     WCEL_Update(ctx, 0, ctx->len);
 195     ctx->line[ctx->len] = 0;
 196 }
 197
 198 static void WCEL_InsertString(WCEL_Context* ctx, const WCHAR* str)
 199 {
 200     size_t      len = lstrlenW(str);
 201
 202     if (!len || !WCEL_Grow(ctx, len)) return;
 203     if (ctx->len > ctx->ofs)
 204         memmove(&ctx->line[ctx->ofs + len], &ctx->line[ctx->ofs], (ctx->len - ctx->ofs) * sizeof(WCHAR));
 205     memcpy(&ctx->line[ctx->ofs], str, len * sizeof(WCHAR));
 206     ctx->len += len;
 207     ctx->line[ctx->len] = 0;
 208     WCEL_Update(ctx, ctx->ofs, ctx->len - ctx->ofs);
 209
 210     ctx->ofs += len;
 211 }
 212
 213 static void WCEL_InsertChar(WCEL_Context* ctx, WCHAR c)
 214 {
 215     WCHAR       buffer[2];
 216
 217     /* do not insert 0..31 control characters */
 218     if (c < ' ' && c != '\t') return;
 219
 220     buffer[0] = c;
 221     buffer[1] = 0;
 222     WCEL_InsertString(ctx, buffer);
 223 }
 224
 225 static void WCEL_FreeYank(WCEL_Context* ctx)
 226 {
 227     if (ctx->yanked)
 228     {
 229         HeapFree(GetProcessHeap(), 0, ctx->yanked);
 230         ctx->yanked = NULL;
 231     }
 232 }
 233
 234 static void WCEL_SaveYank(WCEL_Context* ctx, int beg, int end)
 235 {
 236     int len = end - beg;
 237     if (len <= 0) return;
 238
 239     WCEL_FreeYank(ctx);
 240     ctx->yanked = HeapReAlloc(GetProcessHeap(), 0, ctx->yanked, (len + 1) * sizeof(WCHAR));
 241     if (!ctx->yanked) return;
 242     memcpy(ctx->yanked, &ctx->line[beg], len * sizeof(WCHAR));
 243     ctx->yanked[len] = 0;
 244 }
 245
 246 /* FIXME NTDLL doesn't export iswalnum, and I don't want to link in msvcrt when most
 247  * of the data lay in unicode lib
 248  */
 249 static inline BOOL WCEL_iswalnum(WCHAR wc)
 250 {
 251     return get_char_typeW(wc) & (C1_ALPHA|C1_DIGIT|C1_LOWER|C1_UPPER);
 252 }
 253
 254 static int WCEL_GetLeftWordTransition(WCEL_Context* ctx, int ofs)
 255 {
 256     ofs--;
 257     while (ofs >= 0 && !WCEL_iswalnum(ctx->line[ofs])) ofs--;
 258     while (ofs >= 0 && WCEL_iswalnum(ctx->line[ofs])) ofs--;
 259     if (ofs >= 0) ofs++;
 260     return max(ofs, 0);
 261 }
 262
 263 static int WCEL_GetRightWordTransition(WCEL_Context* ctx, int ofs)
 264 {
 265     ofs++;
 266     while (ofs <= ctx->len && WCEL_iswalnum(ctx->line[ofs])) ofs++;
 267     while (ofs <= ctx->len && !WCEL_iswalnum(ctx->line[ofs])) ofs++;
 268     return min(ofs, ctx->len);
 269 }
 270
 271 static WCHAR* WCEL_GetHistory(WCEL_Context* ctx, int idx)
 272 {
 273     WCHAR*      ptr;
 274
 275     if (idx == ctx->histSize - 1)
 276     {
 277         ptr = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(ctx->histCurr) + 1) * sizeof(WCHAR));
 278         lstrcpyW(ptr, ctx->histCurr);
 279     }
 280     else
 281     {
 282         int     len = CONSOLE_GetHistory(idx, NULL, 0);
 283
 284         if ((ptr = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 285         {
 286             CONSOLE_GetHistory(idx, ptr, len);
 287         }
 288     }
 289     return ptr;
 290 }
 291
 292 static void     WCEL_HistoryInit(WCEL_Context* ctx)
 293 {
 294     ctx->histPos  = CONSOLE_GetNumHistoryEntries();
 295     ctx->histSize = ctx->histPos + 1;
 296     ctx->histCurr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WCHAR));
 297 }
 298
 299 static void    WCEL_MoveToHist(WCEL_Context* ctx, int idx)
 300 {
 301     WCHAR*      data = WCEL_GetHistory(ctx, idx);
 302     int         len = lstrlenW(data) + 1;
 303
 304     /* save current line edition for recall when needed (FIXME seems broken to me) */
 305     if (ctx->histPos == ctx->histSize - 1)
 306     {
 307         if (ctx->histCurr) HeapFree(GetProcessHeap(), 0, ctx->histCurr);
 308         ctx->histCurr = HeapAlloc(GetProcessHeap(), 0, (ctx->len + 1) * sizeof(WCHAR));
 309         memcpy(ctx->histCurr, ctx->line, (ctx->len + 1) * sizeof(WCHAR));
 310     }
 311     /* need to clean also the screen if new string is shorter than old one */
 312     WCEL_DeleteString(ctx, 0, ctx->len);
 313     ctx->ofs = 0;
 314     /* insert new string */
 315     if (WCEL_Grow(ctx, len))
 316     {
 317         WCEL_InsertString(ctx, data);
 318         HeapFree(GetProcessHeap(), 0, data);
 319         ctx->histPos = idx;
 320     }
 321 }
 322
 323 static void    WCEL_FindPrevInHist(WCEL_Context* ctx)
 324 {
 325     int startPos = ctx->histPos;
 326     WCHAR*      data;
 327     int         len, oldofs;
 328
 329     if (ctx->histPos && ctx->histPos == ctx->histSize) {
 330         startPos--;
 331         ctx->histPos--;
 332     }
 333
 334     do {
 335        data = WCEL_GetHistory(ctx, ctx->histPos);
 336
 337        if (ctx->histPos) ctx->histPos--;
 338        else ctx->histPos = (ctx->histSize-1);
 339
 340        len = lstrlenW(data) + 1;
 341        if ((len >= ctx->ofs) &&
 342            (memcmp(ctx->line, data, ctx->ofs * sizeof(WCHAR)) == 0)) {
 343
 344            /* need to clean also the screen if new string is shorter than old one */
 345            WCEL_DeleteString(ctx, 0, ctx->len);
 346
 347            if (WCEL_Grow(ctx, len))
 348            {
 349               oldofs = ctx->ofs;
 350               ctx->ofs = 0;
 351               WCEL_InsertString(ctx, data);
 352               ctx->ofs = oldofs;
 353               SetConsoleCursorPosition(ctx->hConOut, WCEL_GetCoord(ctx, ctx->ofs));
 354               HeapFree(GetProcessHeap(), 0, data);
 355               return;
 356            }
 357        }
 358     } while (ctx->histPos != startPos);
 359
 360     return;
 361 }
 362
 363 /* ====================================================================
 364  *
 365  * basic edition functions
 366  *
 367  * ====================================================================*/
 368
 369 static void WCEL_Done(WCEL_Context* ctx)
 370 {
 371     WCHAR       nl = '\n';
 372     if (!WCEL_Grow(ctx, 1)) return;
 373     ctx->line[ctx->len++] = '\n';
 374     ctx->line[ctx->len] = 0;
 375     WriteConsoleW(ctx->hConOut, &nl, 1, NULL, NULL);
 376     ctx->done = 1;
 377 }
 378
 379 static void WCEL_MoveLeft(WCEL_Context* ctx)
 380 {
 381     if (ctx->ofs > 0) ctx->ofs--;
 382 }
 383
 384 static void WCEL_MoveRight(WCEL_Context* ctx)
 385 {
 386     if (ctx->ofs < ctx->len) ctx->ofs++;
 387 }
 388
 389 static void WCEL_MoveToLeftWord(WCEL_Context* ctx)
 390 {
 391     int new_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs);
 392     if (new_ofs != ctx->ofs) ctx->ofs = new_ofs;
 393 }
 394
 395 static void WCEL_MoveToRightWord(WCEL_Context* ctx)
 396 {
 397     int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 398     if (new_ofs != ctx->ofs) ctx->ofs = new_ofs;
 399 }
 400
 401 static void WCEL_MoveToBeg(WCEL_Context* ctx)
 402 {
 403     ctx->ofs = 0;
 404 }
 405
 406 static void WCEL_MoveToEnd(WCEL_Context* ctx)
 407 {
 408     ctx->ofs = ctx->len;
 409 }
 410
 411 static void WCEL_SetMark(WCEL_Context* ctx)
 412 {
 413     ctx->mark = ctx->ofs;
 414 }
 415
 416 static void WCEL_ExchangeMark(WCEL_Context* ctx)
 417 {
 418     unsigned tmp;
 419
 420     if (ctx->mark > ctx->len) return;
 421     tmp = ctx->ofs;
 422     ctx->ofs = ctx->mark;
 423     ctx->mark = tmp;
 424 }
 425
 426 static void WCEL_CopyMarkedZone(WCEL_Context* ctx)
 427 {
 428     unsigned beg, end;
 429
 430     if (ctx->mark > ctx->len || ctx->mark == ctx->ofs) return;
 431     if (ctx->mark > ctx->ofs)
 432     {
 433         beg = ctx->ofs;         end = ctx->mark;
 434     }
 435     else
 436     {
 437         beg = ctx->mark;        end = ctx->ofs;
 438     }
 439     WCEL_SaveYank(ctx, beg, end);
 440 }
 441
 442 static void WCEL_TransposeChar(WCEL_Context* ctx)
 443 {
 444     WCHAR       c;
 445
 446     if (!ctx->ofs || ctx->ofs == ctx->len) return;
 447
 448     c = ctx->line[ctx->ofs];
 449     ctx->line[ctx->ofs] = ctx->line[ctx->ofs - 1];
 450     ctx->line[ctx->ofs - 1] = c;
 451
 452     WCEL_Update(ctx, ctx->ofs - 1, 2);
 453     ctx->ofs++;
 454 }
 455
 456 static void WCEL_TransposeWords(WCEL_Context* ctx)
 457 {
 458     int left_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs),
 459         right_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 460     if (left_ofs < ctx->ofs && right_ofs > ctx->ofs)
 461     {
 462         unsigned len_r = right_ofs - ctx->ofs;
 463         unsigned len_l = ctx->ofs - left_ofs;
 464
 465         char*   tmp = HeapAlloc(GetProcessHeap(), 0, len_r * sizeof(WCHAR));
 466         if (!tmp) return;
 467
 468         memcpy(tmp, &ctx->line[ctx->ofs], len_r * sizeof(WCHAR));
 469         memmove(&ctx->line[left_ofs + len_r], &ctx->line[left_ofs], len_l * sizeof(WCHAR));
 470         memcpy(&ctx->line[left_ofs], tmp, len_r * sizeof(WCHAR));
 471
 472         HeapFree(GetProcessHeap(), 0, tmp);
 473         WCEL_Update(ctx, left_ofs, len_l + len_r);
 474         ctx->ofs = right_ofs;
 475     }
 476 }
 477
 478 static void WCEL_LowerCaseWord(WCEL_Context* ctx)
 479 {
 480     int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 481     if (new_ofs != ctx->ofs)
 482     {
 483         int     i;
 484         for (i = ctx->ofs; i <= new_ofs; i++)
 485             ctx->line[i] = tolowerW(ctx->line[i]);
 486         WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
 487         ctx->ofs = new_ofs;
 488     }
 489 }
 490
 491 static void WCEL_UpperCaseWord(WCEL_Context* ctx)
 492 {
 493     int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 494     if (new_ofs != ctx->ofs)
 495     {
 496         int     i;
 497         for (i = ctx->ofs; i <= new_ofs; i++)
 498             ctx->line[i] = toupperW(ctx->line[i]);
 499         WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
 500         ctx->ofs = new_ofs;
 501     }
 502 }
 503
 504 static void WCEL_CapitalizeWord(WCEL_Context* ctx)
 505 {
 506     int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 507     if (new_ofs != ctx->ofs)
 508     {
 509         int     i;
 510
 511         ctx->line[ctx->ofs] = toupperW(ctx->line[ctx->ofs]);
 512         for (i = ctx->ofs + 1; i <= new_ofs; i++)
 513             ctx->line[i] = tolowerW(ctx->line[i]);
 514         WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
 515         ctx->ofs = new_ofs;
 516     }
 517 }
 518
 519 static void WCEL_Yank(WCEL_Context* ctx)
 520 {
 521     WCEL_InsertString(ctx, ctx->yanked);
 522 }
 523
 524 static void WCEL_KillToEndOfLine(WCEL_Context* ctx)
 525 {
 526     WCEL_SaveYank(ctx, ctx->ofs, ctx->len);
 527     WCEL_DeleteString(ctx, ctx->ofs, ctx->len);
 528 }
 529
 530 static void WCEL_KillMarkedZone(WCEL_Context* ctx)
 531 {
 532     unsigned beg, end;
 533
 534     if (ctx->mark > ctx->len || ctx->mark == ctx->ofs) return;
 535     if (ctx->mark > ctx->ofs)
 536     {
 537         beg = ctx->ofs;         end = ctx->mark;
 538     }
 539     else
 540     {
 541         beg = ctx->mark;        end = ctx->ofs;
 542     }
 543     WCEL_SaveYank(ctx, beg, end);
 544     WCEL_DeleteString(ctx, beg, end);
 545     ctx->ofs = beg;
 546 }
 547
 548 static void WCEL_DeletePrevChar(WCEL_Context* ctx)
 549 {
 550     if (ctx->ofs)
 551     {
 552         WCEL_DeleteString(ctx, ctx->ofs - 1, ctx->ofs);
 553         ctx->ofs--;
 554     }
 555 }
 556
 557 static void WCEL_DeleteCurrChar(WCEL_Context* ctx)
 558 {
 559     if (ctx->ofs < ctx->len)
 560         WCEL_DeleteString(ctx, ctx->ofs, ctx->ofs + 1);
 561 }
 562
 563 static void WCEL_DeleteLeftWord(WCEL_Context* ctx)
 564 {
 565     int new_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs);
 566     if (new_ofs != ctx->ofs)
 567     {
 568         WCEL_DeleteString(ctx, new_ofs, ctx->ofs);
 569         ctx->ofs = new_ofs;
 570     }
 571 }
 572
 573 static void WCEL_DeleteRightWord(WCEL_Context* ctx)
 574 {
 575     int new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 576     if (new_ofs != ctx->ofs)
 577     {
 578         WCEL_DeleteString(ctx, ctx->ofs, new_ofs);
 579     }
 580 }
 581
 582 static void WCEL_MoveToPrevHist(WCEL_Context* ctx)
 583 {
 584     if (ctx->histPos) WCEL_MoveToHist(ctx, ctx->histPos - 1);
 585 }
 586
 587 static void WCEL_MoveToNextHist(WCEL_Context* ctx)
 588 {
 589     if (ctx->histPos < ctx->histSize - 1) WCEL_MoveToHist(ctx, ctx->histPos + 1);
 590 }
 591
 592 static void WCEL_MoveToFirstHist(WCEL_Context* ctx)
 593 {
 594     if (ctx->histPos != 0) WCEL_MoveToHist(ctx, 0);
 595 }
 596
 597 static void WCEL_MoveToLastHist(WCEL_Context* ctx)
 598 {
 599     if (ctx->histPos != ctx->histSize - 1) WCEL_MoveToHist(ctx, ctx->histSize - 1);
 600 }
 601
 602 static void WCEL_Redraw(WCEL_Context* ctx)
 603 {
 604     COORD       c = WCEL_GetCoord(ctx, ctx->len);
 605     CHAR_INFO   ci;
 606
 607     WCEL_Update(ctx, 0, ctx->len);
 608
 609     ci.Char.UnicodeChar = ' ';
 610     ci.Attributes = ctx->csbi.wAttributes;
 611
 612     CONSOLE_FillLineUniform(ctx->hConOut, c.X, c.Y, ctx->csbi.dwSize.X - c.X, &ci);
 613 }
 614
 615 static void WCEL_RepeatCount(WCEL_Context* ctx)
 616 {
 617 #if 0
 618 /* FIXME: wait until all console code is in kernel32 */
 619     INPUT_RECORD        ir;
 620     unsigned            repeat = 0;
 621
 622     while (WCEL_Get(ctx, &ir, FALSE))
 623     {
 624         if (ir.EventType != KEY_EVENT) break;
 625         if (ir.Event.KeyEvent.bKeyDown)
 626         {
 627             if ((ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON)) != 0)
 628                 break;
 629             if (ir.Event.KeyEvent.uChar.UnicodeChar < '0' ||
 630                 ir.Event.KeyEvent.uChar.UnicodeChar > '9')
 631                 break;
 632             repeat = repeat * 10 + ir.Event.KeyEvent.uChar.UnicodeChar - '0';
 633         }
 634         WCEL_Get(ctx, &ir, TRUE);
 635     }
 636     FIXME("=> %u\n", repeat);
 637 #endif
 638 }
 639
 640 /* ====================================================================
 641  *
 642  *              Key Maps
 643  *
 644  * ====================================================================*/
 645
 646 #define CTRL(x) ((x) - '@')
 647 static KeyEntry StdKeyMap[] =
 648 {
 649     {/*BACK*/0x08,      WCEL_DeletePrevChar     },
 650     {/*RETURN*/0x0d,    WCEL_Done               },
 651     {/*DEL*/127,        WCEL_DeleteCurrChar     },
 652     {   0,              NULL                    }
 653 };
 654
 655 static KeyEntry Win32ExtraStdKeyMap[] =
 656 {
 657     {/*VK_F8*/   0x77,  WCEL_FindPrevInHist     },
 658     {   0,              NULL                    }
 659 };
 660
 661
 662 static  KeyEntry EmacsKeyMapCtrl[] =
 663 {
 664     {   CTRL('@'),      WCEL_SetMark            },
 665     {   CTRL('A'),      WCEL_MoveToBeg          },
 666     {   CTRL('B'),      WCEL_MoveLeft           },
 667     /* C: done in server */
 668     {   CTRL('D'),      WCEL_DeleteCurrChar     },
 669     {   CTRL('E'),      WCEL_MoveToEnd          },
 670     {   CTRL('F'),      WCEL_MoveRight          },
 671     {   CTRL('G'),      WCEL_Beep               },
 672     {   CTRL('H'),      WCEL_DeletePrevChar     },
 673     /* I: meaningless (or tab ???) */
 674     {   CTRL('J'),      WCEL_Done               },
 675     {   CTRL('K'),      WCEL_KillToEndOfLine    },
 676     {   CTRL('L'),      WCEL_Redraw             },
 677     {   CTRL('M'),      WCEL_Done               },
 678     {   CTRL('N'),      WCEL_MoveToNextHist     },
 679     /* O; insert line... meaningless */
 680     {   CTRL('P'),      WCEL_MoveToPrevHist     },
 681     /* Q: [NIY] quoting... */
 682     /* R: [NIY] search backwards... */
 683     /* S: [NIY] search forwards... */
 684     {   CTRL('T'),      WCEL_TransposeChar      },
 685     {   CTRL('U'),      WCEL_RepeatCount        },
 686     /* V: paragraph down... meaningless */
 687     {   CTRL('W'),      WCEL_KillMarkedZone     },
 688     {   CTRL('X'),      WCEL_ExchangeMark       },
 689     {   CTRL('Y'),      WCEL_Yank               },
 690     /* Z: meaningless */
 691     {   0,              NULL                    }
 692 };
 693
 694 static KeyEntry EmacsKeyMapAlt[] =
 695 {
 696     {/*DEL*/127,        WCEL_DeleteLeftWord     },
 697     {   '<',            WCEL_MoveToFirstHist    },
 698     {   '>',            WCEL_MoveToLastHist     },
 699     {   '?',            WCEL_Beep               },
 700     {   'b',            WCEL_MoveToLeftWord     },
 701     {   'c',            WCEL_CapitalizeWord     },
 702     {   'd',            WCEL_DeleteRightWord    },
 703     {   'f',            WCEL_MoveToRightWord    },
 704     {   'l',            WCEL_LowerCaseWord      },
 705     {   't',            WCEL_TransposeWords     },
 706     {   'u',            WCEL_UpperCaseWord      },
 707     {   'w',            WCEL_CopyMarkedZone     },
 708     {   0,              NULL                    }
 709 };
 710
 711 static KeyEntry EmacsKeyMapExtended[] =
 712 {
 713     {/*RETURN*/  0x0d,  WCEL_Done },
 714     {/*VK_PRIOR*/0x21,  WCEL_MoveToPrevHist     },
 715     {/*VK_NEXT*/ 0x22,  WCEL_MoveToNextHist     },
 716     {/*VK_END*/  0x23,  WCEL_MoveToEnd          },
 717     {/*VK_HOME*/ 0x24,  WCEL_MoveToBeg          },
 718     {/*VK_RIGHT*/0x27,  WCEL_MoveRight          },
 719     {/*VK_LEFT*/ 0x25,  WCEL_MoveLeft           },
 720     {/*VK_DEL*/  0x2e,  WCEL_DeleteCurrChar     },
 721     {   0,              NULL                    }
 722 };
 723
 724 static KeyMap   EmacsKeyMap[] =
 725 {
 726     {0x00000000, 1, StdKeyMap},
 727     {0x00000001, 1, EmacsKeyMapAlt},    /* left  alt  */
 728     {0x00000002, 1, EmacsKeyMapAlt},    /* right alt  */
 729     {0x00000004, 1, EmacsKeyMapCtrl},   /* left  ctrl */
 730     {0x00000008, 1, EmacsKeyMapCtrl},   /* right ctrl */
 731     {0x00000100, 0, EmacsKeyMapExtended},
 732     {0,          0, 0}
 733 };
 734
 735 static  KeyEntry Win32KeyMapExtended[] =
 736 {
 737     {/*VK_LEFT*/ 0x25,  WCEL_MoveLeft           },
 738     {/*VK_RIGHT*/0x27,  WCEL_MoveRight          },
 739     {/*VK_HOME*/ 0x24,  WCEL_MoveToBeg          },
 740     {/*VK_END*/  0x23,  WCEL_MoveToEnd          },
 741     {/*VK_UP*/   0x26,  WCEL_MoveToPrevHist     },
 742     {/*VK_DOWN*/ 0x28,  WCEL_MoveToNextHist     },
 743     {/*VK_DEL*/  0x2e,  WCEL_DeleteCurrChar     },
 744     {   0,              NULL                    }
 745 };
 746
 747 static  KeyEntry Win32KeyMapCtrlExtended[] =
 748 {
 749     {/*VK_LEFT*/ 0x25,  WCEL_MoveToLeftWord     },
 750     {/*VK_RIGHT*/0x27,  WCEL_MoveToRightWord    },
 751     {/*VK_END*/  0x23,  WCEL_KillToEndOfLine    },
 752     {   0,              NULL                    }
 753 };
 754
 755 KeyMap  Win32KeyMap[] =
 756 {
 757     {0x00000000, 1, StdKeyMap},
 758     {0x00000000, 0, Win32ExtraStdKeyMap},
 759     {0x00000100, 0, Win32KeyMapExtended},
 760     {0x00000104, 0, Win32KeyMapCtrlExtended},
 761     {0x00000108, 0, Win32KeyMapCtrlExtended},
 762     {0,          0, 0}
 763 };
 764 #undef CTRL
 765
 766 /* ====================================================================
 767  *
 768  *              Read line master function
 769  *
 770  * ====================================================================*/
 771
 772 WCHAR* CONSOLE_Readline(HANDLE hConsoleIn)
 773 {
 774     WCEL_Context        ctx;
 775     INPUT_RECORD        ir;
 776     KeyMap*             km;
 777     KeyEntry*           ke;
 778     unsigned            ofs;
 779     void                (*func)(struct WCEL_Context* ctx);
 780     DWORD               ks;
 781     int                 use_emacs;
 782
 783     memset(&ctx, 0, sizeof(ctx));
 784     ctx.hConIn = hConsoleIn;
 785     WCEL_HistoryInit(&ctx);
 786
 787     if (!CONSOLE_GetEditionMode(hConsoleIn, &use_emacs))
 788         use_emacs = 0;
 789
 790     if ((ctx.hConOut = CreateFileA("CONOUT$", GENERIC_READ|GENERIC_WRITE, 0, NULL,
 791                                     OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE ||
 792         !GetConsoleScreenBufferInfo(ctx.hConOut, &ctx.csbi))
 793         return NULL;
 794     ctx.can_wrap = (GetConsoleMode(ctx.hConOut, &ks) && (ks & ENABLE_WRAP_AT_EOL_OUTPUT)) ? 1 : 0;
 795
 796     if (!WCEL_Grow(&ctx, 1))
 797     {
 798         CloseHandle(ctx.hConOut);
 799         return NULL;
 800     }
 801     ctx.line[0] = 0;
 802
 803 /* EPP     WCEL_Dump(&ctx, "init"); */
 804
 805     while (!ctx.done && !ctx.error && WCEL_Get(&ctx, &ir))
 806     {
 807         if (ir.EventType != KEY_EVENT) continue;
 808         TRACE("key%s repeatCount=%u, keyCode=%02x scanCode=%02x char=%02x keyState=%08lx\n",
 809               ir.Event.KeyEvent.bKeyDown ? "Down" : "Up  ", ir.Event.KeyEvent.wRepeatCount,
 810               ir.Event.KeyEvent.wVirtualKeyCode, ir.Event.KeyEvent.wVirtualScanCode,
 811               ir.Event.KeyEvent.uChar.UnicodeChar, ir.Event.KeyEvent.dwControlKeyState);
 812         if (!ir.Event.KeyEvent.bKeyDown) continue;
 813
 814 /* EPP          WCEL_Dump(&ctx, "before func"); */
 815         ofs = ctx.ofs;
 816         /* mask out some bits which don't interest us */
 817         ks = ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON);
 818
 819         func = NULL;
 820         for (km = (use_emacs) ? EmacsKeyMap : Win32KeyMap; km->entries != NULL; km++)
 821         {
 822             if (km->keyState != ks)
 823                 continue;
 824             if (km->chkChar)
 825             {
 826                 for (ke = &km->entries[0]; ke->func != 0; ke++)
 827                     if (ke->val == ir.Event.KeyEvent.uChar.UnicodeChar) break;
 828             }
 829             else
 830             {
 831                 for (ke = &km->entries[0]; ke->func != 0; ke++)
 832                     if (ke->val == ir.Event.KeyEvent.wVirtualKeyCode) break;
 833
 834             }
 835             if (ke->func)
 836             {
 837                 func = ke->func;
 838                 break;
 839             }
 840         }
 841
 842         if (func)
 843             (func)(&ctx);
 844         else if (!(ir.Event.KeyEvent.dwControlKeyState & (ENHANCED_KEY|LEFT_ALT_PRESSED)))
 845             WCEL_InsertChar(&ctx, ir.Event.KeyEvent.uChar.UnicodeChar);
 846         else TRACE("Dropped event\n");
 847
 848 /* EPP         WCEL_Dump(&ctx, "after func"); */
 849         if (ctx.ofs != ofs)
 850             SetConsoleCursorPosition(ctx.hConOut, WCEL_GetCoord(&ctx, ctx.ofs));
 851     }
 852     if (ctx.error)
 853     {
 854         HeapFree(GetProcessHeap(), 0, ctx.line);
 855         ctx.line = NULL;
 856     }
 857     WCEL_FreeYank(&ctx);
 858     if (ctx.line)
 859         CONSOLE_AppendHistory(ctx.line);
 860
 861     CloseHandle(ctx.hConOut);
 862     if (ctx.histCurr) HeapFree(GetProcessHeap(), 0, ctx.histCurr);
 863     return ctx.line;
 864 }