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     int         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
 154         if (ctx->line)
 155             newline = HeapReAlloc(GetProcessHeap(), 0, ctx->line, sizeof(WCHAR) * newsize);
 156         else
 157             newline = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * newsize);
 158
 159         if (!newline) return FALSE;
 160         ctx->line = newline;
 161         ctx->alloc = newsize;
 162     }
 163     return TRUE;
 164 }
 165
 166 static void WCEL_DeleteString(WCEL_Context* ctx, int beg, int end)
 167 {
 168     unsigned    str_len = end - beg;
 169     COORD       cbeg = WCEL_GetCoord(ctx, ctx->len - str_len);
 170     COORD       cend = WCEL_GetCoord(ctx, ctx->len);
 171     CHAR_INFO   ci;
 172
 173     if (end < ctx->len)
 174         memmove(&ctx->line[beg], &ctx->line[end], (ctx->len - end) * sizeof(WCHAR));
 175     /* we need to clean from ctx->len - str_len to ctx->len */
 176
 177     ci.Char.UnicodeChar = ' ';
 178     ci.Attributes = ctx->csbi.wAttributes;
 179
 180     if (cbeg.Y == cend.Y)
 181     {
 182         /* partial erase of sole line */
 183         CONSOLE_FillLineUniform(ctx->hConOut, cbeg.X, cbeg.Y,
 184                                 cend.X - cbeg.X, &ci);
 185     }
 186     else
 187     {
 188         int         i;
 189         /* erase til eol on first line */
 190         CONSOLE_FillLineUniform(ctx->hConOut, cbeg.X, cbeg.Y,
 191                                 ctx->csbi.dwSize.X - cbeg.X, &ci);
 192         /* completely erase all the others (full lines) */
 193         for (i = cbeg.Y + 1; i < cend.Y; i++)
 194             CONSOLE_FillLineUniform(ctx->hConOut, 0, i, ctx->csbi.dwSize.X, &ci);
 195         /* erase from beginning of line until last pos on last line */
 196         CONSOLE_FillLineUniform(ctx->hConOut, 0, cend.Y, cend.X, &ci);
 197     }
 198     ctx->len -= str_len;
 199     WCEL_Update(ctx, 0, ctx->len);
 200     ctx->line[ctx->len] = 0;
 201 }
 202
 203 static void WCEL_InsertString(WCEL_Context* ctx, const WCHAR* str)
 204 {
 205     size_t      len = lstrlenW(str);
 206
 207     if (!len || !WCEL_Grow(ctx, len)) return;
 208     if (ctx->len > ctx->ofs)
 209         memmove(&ctx->line[ctx->ofs + len], &ctx->line[ctx->ofs], (ctx->len - ctx->ofs) * sizeof(WCHAR));
 210     memcpy(&ctx->line[ctx->ofs], str, len * sizeof(WCHAR));
 211     ctx->len += len;
 212     ctx->line[ctx->len] = 0;
 213     WCEL_Update(ctx, ctx->ofs, ctx->len - ctx->ofs);
 214
 215     ctx->ofs += len;
 216 }
 217
 218 static void WCEL_InsertChar(WCEL_Context* ctx, WCHAR c)
 219 {
 220     WCHAR       buffer[2];
 221
 222     /* do not insert 0..31 control characters */
 223     if (c < ' ' && c != '\t') return;
 224
 225     buffer[0] = c;
 226     buffer[1] = 0;
 227     WCEL_InsertString(ctx, buffer);
 228 }
 229
 230 static void WCEL_FreeYank(WCEL_Context* ctx)
 231 {
 232     HeapFree(GetProcessHeap(), 0, ctx->yanked);
 233     ctx->yanked = NULL;
 234 }
 235
 236 static void WCEL_SaveYank(WCEL_Context* ctx, int beg, int end)
 237 {
 238     int len = end - beg;
 239     if (len <= 0) return;
 240
 241     WCEL_FreeYank(ctx);
 242     /* After WCEL_FreeYank ctx->yanked is empty */
 243     ctx->yanked = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
 244     if (!ctx->yanked) return;
 245     memcpy(ctx->yanked, &ctx->line[beg], len * sizeof(WCHAR));
 246     ctx->yanked[len] = 0;
 247 }
 248
 249 /* FIXME NTDLL doesn't export iswalnum, and I don't want to link in msvcrt when most
 250  * of the data lay in unicode lib
 251  */
 252 static inline BOOL WCEL_iswalnum(WCHAR wc)
 253 {
 254     return get_char_typeW(wc) & (C1_ALPHA|C1_DIGIT|C1_LOWER|C1_UPPER);
 255 }
 256
 257 static int WCEL_GetLeftWordTransition(WCEL_Context* ctx, int ofs)
 258 {
 259     ofs--;
 260     while (ofs >= 0 && !WCEL_iswalnum(ctx->line[ofs])) ofs--;
 261     while (ofs >= 0 && WCEL_iswalnum(ctx->line[ofs])) ofs--;
 262     if (ofs >= 0) ofs++;
 263     return max(ofs, 0);
 264 }
 265
 266 static int WCEL_GetRightWordTransition(WCEL_Context* ctx, int ofs)
 267 {
 268     ofs++;
 269     while (ofs <= ctx->len && WCEL_iswalnum(ctx->line[ofs])) ofs++;
 270     while (ofs <= ctx->len && !WCEL_iswalnum(ctx->line[ofs])) ofs++;
 271     return min(ofs, ctx->len);
 272 }
 273
 274 static WCHAR* WCEL_GetHistory(WCEL_Context* ctx, int idx)
 275 {
 276     WCHAR*      ptr;
 277
 278     if (idx == ctx->histSize - 1)
 279     {
 280         ptr = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(ctx->histCurr) + 1) * sizeof(WCHAR));
 281         lstrcpyW(ptr, ctx->histCurr);
 282     }
 283     else
 284     {
 285         int     len = CONSOLE_GetHistory(idx, NULL, 0);
 286
 287         if ((ptr = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 288         {
 289             CONSOLE_GetHistory(idx, ptr, len);
 290         }
 291     }
 292     return ptr;
 293 }
 294
 295 static void     WCEL_HistoryInit(WCEL_Context* ctx)
 296 {
 297     ctx->histPos  = CONSOLE_GetNumHistoryEntries();
 298     ctx->histSize = ctx->histPos + 1;
 299     ctx->histCurr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WCHAR));
 300 }
 301
 302 static void    WCEL_MoveToHist(WCEL_Context* ctx, int idx)
 303 {
 304     WCHAR*      data = WCEL_GetHistory(ctx, idx);
 305     int         len = lstrlenW(data) + 1;
 306
 307     /* save current line edition for recall when needed (FIXME seems broken to me) */
 308     if (ctx->histPos == ctx->histSize - 1)
 309     {
 310         HeapFree(GetProcessHeap(), 0, ctx->histCurr);
 311         ctx->histCurr = HeapAlloc(GetProcessHeap(), 0, (ctx->len + 1) * sizeof(WCHAR));
 312         memcpy(ctx->histCurr, ctx->line, (ctx->len + 1) * sizeof(WCHAR));
 313     }
 314     /* need to clean also the screen if new string is shorter than old one */
 315     WCEL_DeleteString(ctx, 0, ctx->len);
 316     ctx->ofs = 0;
 317     /* insert new string */
 318     if (WCEL_Grow(ctx, len))
 319     {
 320         WCEL_InsertString(ctx, data);
 321         HeapFree(GetProcessHeap(), 0, data);
 322         ctx->histPos = idx;
 323     }
 324 }
 325
 326 static void    WCEL_FindPrevInHist(WCEL_Context* ctx)
 327 {
 328     int startPos = ctx->histPos;
 329     WCHAR*      data;
 330     unsigned int    len, oldofs;
 331
 332     if (ctx->histPos && ctx->histPos == ctx->histSize) {
 333         startPos--;
 334         ctx->histPos--;
 335     }
 336
 337     do {
 338        data = WCEL_GetHistory(ctx, ctx->histPos);
 339
 340        if (ctx->histPos) ctx->histPos--;
 341        else ctx->histPos = (ctx->histSize-1);
 342
 343        len = lstrlenW(data) + 1;
 344        if ((len >= ctx->ofs) &&
 345            (memcmp(ctx->line, data, ctx->ofs * sizeof(WCHAR)) == 0)) {
 346
 347            /* need to clean also the screen if new string is shorter than old one */
 348            WCEL_DeleteString(ctx, 0, ctx->len);
 349
 350            if (WCEL_Grow(ctx, len))
 351            {
 352               oldofs = ctx->ofs;
 353               ctx->ofs = 0;
 354               WCEL_InsertString(ctx, data);
 355               ctx->ofs = oldofs;
 356               SetConsoleCursorPosition(ctx->hConOut, WCEL_GetCoord(ctx, ctx->ofs));
 357               HeapFree(GetProcessHeap(), 0, data);
 358               return;
 359            }
 360        }
 361     } while (ctx->histPos != startPos);
 362
 363     return;
 364 }
 365
 366 /* ====================================================================
 367  *
 368  * basic edition functions
 369  *
 370  * ====================================================================*/
 371
 372 static void WCEL_Done(WCEL_Context* ctx)
 373 {
 374     WCHAR       nl = '\n';
 375     if (!WCEL_Grow(ctx, 1)) return;
 376     ctx->line[ctx->len++] = '\n';
 377     ctx->line[ctx->len] = 0;
 378     WriteConsoleW(ctx->hConOut, &nl, 1, NULL, NULL);
 379     ctx->done = 1;
 380 }
 381
 382 static void WCEL_MoveLeft(WCEL_Context* ctx)
 383 {
 384     if (ctx->ofs > 0) ctx->ofs--;
 385 }
 386
 387 static void WCEL_MoveRight(WCEL_Context* ctx)
 388 {
 389     if (ctx->ofs < ctx->len) ctx->ofs++;
 390 }
 391
 392 static void WCEL_MoveToLeftWord(WCEL_Context* ctx)
 393 {
 394     unsigned int        new_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs);
 395     if (new_ofs != ctx->ofs) ctx->ofs = new_ofs;
 396 }
 397
 398 static void WCEL_MoveToRightWord(WCEL_Context* ctx)
 399 {
 400     unsigned int        new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 401     if (new_ofs != ctx->ofs) ctx->ofs = new_ofs;
 402 }
 403
 404 static void WCEL_MoveToBeg(WCEL_Context* ctx)
 405 {
 406     ctx->ofs = 0;
 407 }
 408
 409 static void WCEL_MoveToEnd(WCEL_Context* ctx)
 410 {
 411     ctx->ofs = ctx->len;
 412 }
 413
 414 static void WCEL_SetMark(WCEL_Context* ctx)
 415 {
 416     ctx->mark = ctx->ofs;
 417 }
 418
 419 static void WCEL_ExchangeMark(WCEL_Context* ctx)
 420 {
 421     unsigned tmp;
 422
 423     if (ctx->mark > ctx->len) return;
 424     tmp = ctx->ofs;
 425     ctx->ofs = ctx->mark;
 426     ctx->mark = tmp;
 427 }
 428
 429 static void WCEL_CopyMarkedZone(WCEL_Context* ctx)
 430 {
 431     unsigned beg, end;
 432
 433     if (ctx->mark > ctx->len || ctx->mark == ctx->ofs) return;
 434     if (ctx->mark > ctx->ofs)
 435     {
 436         beg = ctx->ofs;         end = ctx->mark;
 437     }
 438     else
 439     {
 440         beg = ctx->mark;        end = ctx->ofs;
 441     }
 442     WCEL_SaveYank(ctx, beg, end);
 443 }
 444
 445 static void WCEL_TransposeChar(WCEL_Context* ctx)
 446 {
 447     WCHAR       c;
 448
 449     if (!ctx->ofs || ctx->ofs == ctx->len) return;
 450
 451     c = ctx->line[ctx->ofs];
 452     ctx->line[ctx->ofs] = ctx->line[ctx->ofs - 1];
 453     ctx->line[ctx->ofs - 1] = c;
 454
 455     WCEL_Update(ctx, ctx->ofs - 1, 2);
 456     ctx->ofs++;
 457 }
 458
 459 static void WCEL_TransposeWords(WCEL_Context* ctx)
 460 {
 461     unsigned int        left_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs),
 462         right_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 463     if (left_ofs < ctx->ofs && right_ofs > ctx->ofs)
 464     {
 465         unsigned len_r = right_ofs - ctx->ofs;
 466         unsigned len_l = ctx->ofs - left_ofs;
 467
 468         char*   tmp = HeapAlloc(GetProcessHeap(), 0, len_r * sizeof(WCHAR));
 469         if (!tmp) return;
 470
 471         memcpy(tmp, &ctx->line[ctx->ofs], len_r * sizeof(WCHAR));
 472         memmove(&ctx->line[left_ofs + len_r], &ctx->line[left_ofs], len_l * sizeof(WCHAR));
 473         memcpy(&ctx->line[left_ofs], tmp, len_r * sizeof(WCHAR));
 474
 475         HeapFree(GetProcessHeap(), 0, tmp);
 476         WCEL_Update(ctx, left_ofs, len_l + len_r);
 477         ctx->ofs = right_ofs;
 478     }
 479 }
 480
 481 static void WCEL_LowerCaseWord(WCEL_Context* ctx)
 482 {
 483     unsigned int        new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 484     if (new_ofs != ctx->ofs)
 485     {
 486         unsigned int    i;
 487         for (i = ctx->ofs; i <= new_ofs; i++)
 488             ctx->line[i] = tolowerW(ctx->line[i]);
 489         WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
 490         ctx->ofs = new_ofs;
 491     }
 492 }
 493
 494 static void WCEL_UpperCaseWord(WCEL_Context* ctx)
 495 {
 496     unsigned int        new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 497     if (new_ofs != ctx->ofs)
 498     {
 499         unsigned int    i;
 500         for (i = ctx->ofs; i <= new_ofs; i++)
 501             ctx->line[i] = toupperW(ctx->line[i]);
 502         WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
 503         ctx->ofs = new_ofs;
 504     }
 505 }
 506
 507 static void WCEL_CapitalizeWord(WCEL_Context* ctx)
 508 {
 509     unsigned int        new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 510     if (new_ofs != ctx->ofs)
 511     {
 512         unsigned int    i;
 513
 514         ctx->line[ctx->ofs] = toupperW(ctx->line[ctx->ofs]);
 515         for (i = ctx->ofs + 1; i <= new_ofs; i++)
 516             ctx->line[i] = tolowerW(ctx->line[i]);
 517         WCEL_Update(ctx, ctx->ofs, new_ofs - ctx->ofs + 1);
 518         ctx->ofs = new_ofs;
 519     }
 520 }
 521
 522 static void WCEL_Yank(WCEL_Context* ctx)
 523 {
 524     WCEL_InsertString(ctx, ctx->yanked);
 525 }
 526
 527 static void WCEL_KillToEndOfLine(WCEL_Context* ctx)
 528 {
 529     WCEL_SaveYank(ctx, ctx->ofs, ctx->len);
 530     WCEL_DeleteString(ctx, ctx->ofs, ctx->len);
 531 }
 532
 533 static void WCEL_KillMarkedZone(WCEL_Context* ctx)
 534 {
 535     unsigned beg, end;
 536
 537     if (ctx->mark > ctx->len || ctx->mark == ctx->ofs) return;
 538     if (ctx->mark > ctx->ofs)
 539     {
 540         beg = ctx->ofs;         end = ctx->mark;
 541     }
 542     else
 543     {
 544         beg = ctx->mark;        end = ctx->ofs;
 545     }
 546     WCEL_SaveYank(ctx, beg, end);
 547     WCEL_DeleteString(ctx, beg, end);
 548     ctx->ofs = beg;
 549 }
 550
 551 static void WCEL_DeletePrevChar(WCEL_Context* ctx)
 552 {
 553     if (ctx->ofs)
 554     {
 555         WCEL_DeleteString(ctx, ctx->ofs - 1, ctx->ofs);
 556         ctx->ofs--;
 557     }
 558 }
 559
 560 static void WCEL_DeleteCurrChar(WCEL_Context* ctx)
 561 {
 562     if (ctx->ofs < ctx->len)
 563         WCEL_DeleteString(ctx, ctx->ofs, ctx->ofs + 1);
 564 }
 565
 566 static void WCEL_DeleteLeftWord(WCEL_Context* ctx)
 567 {
 568     unsigned int        new_ofs = WCEL_GetLeftWordTransition(ctx, ctx->ofs);
 569     if (new_ofs != ctx->ofs)
 570     {
 571         WCEL_DeleteString(ctx, new_ofs, ctx->ofs);
 572         ctx->ofs = new_ofs;
 573     }
 574 }
 575
 576 static void WCEL_DeleteRightWord(WCEL_Context* ctx)
 577 {
 578     unsigned int        new_ofs = WCEL_GetRightWordTransition(ctx, ctx->ofs);
 579     if (new_ofs != ctx->ofs)
 580     {
 581         WCEL_DeleteString(ctx, ctx->ofs, new_ofs);
 582     }
 583 }
 584
 585 static void WCEL_MoveToPrevHist(WCEL_Context* ctx)
 586 {
 587     if (ctx->histPos) WCEL_MoveToHist(ctx, ctx->histPos - 1);
 588 }
 589
 590 static void WCEL_MoveToNextHist(WCEL_Context* ctx)
 591 {
 592     if (ctx->histPos < ctx->histSize - 1) WCEL_MoveToHist(ctx, ctx->histPos + 1);
 593 }
 594
 595 static void WCEL_MoveToFirstHist(WCEL_Context* ctx)
 596 {
 597     if (ctx->histPos != 0) WCEL_MoveToHist(ctx, 0);
 598 }
 599
 600 static void WCEL_MoveToLastHist(WCEL_Context* ctx)
 601 {
 602     if (ctx->histPos != ctx->histSize - 1) WCEL_MoveToHist(ctx, ctx->histSize - 1);
 603 }
 604
 605 static void WCEL_Redraw(WCEL_Context* ctx)
 606 {
 607     COORD       c = WCEL_GetCoord(ctx, ctx->len);
 608     CHAR_INFO   ci;
 609
 610     WCEL_Update(ctx, 0, ctx->len);
 611
 612     ci.Char.UnicodeChar = ' ';
 613     ci.Attributes = ctx->csbi.wAttributes;
 614
 615     CONSOLE_FillLineUniform(ctx->hConOut, c.X, c.Y, ctx->csbi.dwSize.X - c.X, &ci);
 616 }
 617
 618 static void WCEL_RepeatCount(WCEL_Context* ctx)
 619 {
 620 #if 0
 621 /* FIXME: wait until all console code is in kernel32 */
 622     INPUT_RECORD        ir;
 623     unsigned            repeat = 0;
 624
 625     while (WCEL_Get(ctx, &ir, FALSE))
 626     {
 627         if (ir.EventType != KEY_EVENT) break;
 628         if (ir.Event.KeyEvent.bKeyDown)
 629         {
 630             if ((ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON)) != 0)
 631                 break;
 632             if (ir.Event.KeyEvent.uChar.UnicodeChar < '0' ||
 633                 ir.Event.KeyEvent.uChar.UnicodeChar > '9')
 634                 break;
 635             repeat = repeat * 10 + ir.Event.KeyEvent.uChar.UnicodeChar - '0';
 636         }
 637         WCEL_Get(ctx, &ir, TRUE);
 638     }
 639     FIXME("=> %u\n", repeat);
 640 #endif
 641 }
 642
 643 /* ====================================================================
 644  *
 645  *              Key Maps
 646  *
 647  * ====================================================================*/
 648
 649 #define CTRL(x) ((x) - '@')
 650 static KeyEntry StdKeyMap[] =
 651 {
 652     {/*BACK*/0x08,      WCEL_DeletePrevChar     },
 653     {/*RETURN*/0x0d,    WCEL_Done               },
 654     {/*DEL*/127,        WCEL_DeleteCurrChar     },
 655     {   0,              NULL                    }
 656 };
 657
 658 static KeyEntry Win32ExtraStdKeyMap[] =
 659 {
 660     {/*VK_F8*/   0x77,  WCEL_FindPrevInHist     },
 661     {   0,              NULL                    }
 662 };
 663
 664
 665 static  KeyEntry EmacsKeyMapCtrl[] =
 666 {
 667     {   CTRL('@'),      WCEL_SetMark            },
 668     {   CTRL('A'),      WCEL_MoveToBeg          },
 669     {   CTRL('B'),      WCEL_MoveLeft           },
 670     /* C: done in server */
 671     {   CTRL('D'),      WCEL_DeleteCurrChar     },
 672     {   CTRL('E'),      WCEL_MoveToEnd          },
 673     {   CTRL('F'),      WCEL_MoveRight          },
 674     {   CTRL('G'),      WCEL_Beep               },
 675     {   CTRL('H'),      WCEL_DeletePrevChar     },
 676     /* I: meaningless (or tab ???) */
 677     {   CTRL('J'),      WCEL_Done               },
 678     {   CTRL('K'),      WCEL_KillToEndOfLine    },
 679     {   CTRL('L'),      WCEL_Redraw             },
 680     {   CTRL('M'),      WCEL_Done               },
 681     {   CTRL('N'),      WCEL_MoveToNextHist     },
 682     /* O; insert line... meaningless */
 683     {   CTRL('P'),      WCEL_MoveToPrevHist     },
 684     /* Q: [NIY] quoting... */
 685     /* R: [NIY] search backwards... */
 686     /* S: [NIY] search forwards... */
 687     {   CTRL('T'),      WCEL_TransposeChar      },
 688     {   CTRL('U'),      WCEL_RepeatCount        },
 689     /* V: paragraph down... meaningless */
 690     {   CTRL('W'),      WCEL_KillMarkedZone     },
 691     {   CTRL('X'),      WCEL_ExchangeMark       },
 692     {   CTRL('Y'),      WCEL_Yank               },
 693     /* Z: meaningless */
 694     {   0,              NULL                    }
 695 };
 696
 697 static KeyEntry EmacsKeyMapAlt[] =
 698 {
 699     {/*DEL*/127,        WCEL_DeleteLeftWord     },
 700     {   '<',            WCEL_MoveToFirstHist    },
 701     {   '>',            WCEL_MoveToLastHist     },
 702     {   '?',            WCEL_Beep               },
 703     {   'b',            WCEL_MoveToLeftWord     },
 704     {   'c',            WCEL_CapitalizeWord     },
 705     {   'd',            WCEL_DeleteRightWord    },
 706     {   'f',            WCEL_MoveToRightWord    },
 707     {   'l',            WCEL_LowerCaseWord      },
 708     {   't',            WCEL_TransposeWords     },
 709     {   'u',            WCEL_UpperCaseWord      },
 710     {   'w',            WCEL_CopyMarkedZone     },
 711     {   0,              NULL                    }
 712 };
 713
 714 static KeyEntry EmacsKeyMapExtended[] =
 715 {
 716     {/*RETURN*/  0x0d,  WCEL_Done },
 717     {/*VK_PRIOR*/0x21,  WCEL_MoveToPrevHist     },
 718     {/*VK_NEXT*/ 0x22,  WCEL_MoveToNextHist     },
 719     {/*VK_END*/  0x23,  WCEL_MoveToEnd          },
 720     {/*VK_HOME*/ 0x24,  WCEL_MoveToBeg          },
 721     {/*VK_RIGHT*/0x27,  WCEL_MoveRight          },
 722     {/*VK_LEFT*/ 0x25,  WCEL_MoveLeft           },
 723     {/*VK_DEL*/  0x2e,  WCEL_DeleteCurrChar     },
 724     {   0,              NULL                    }
 725 };
 726
 727 static KeyMap   EmacsKeyMap[] =
 728 {
 729     {0x00000000, 1, StdKeyMap},
 730     {0x00000001, 1, EmacsKeyMapAlt},    /* left  alt  */
 731     {0x00000002, 1, EmacsKeyMapAlt},    /* right alt  */
 732     {0x00000004, 1, EmacsKeyMapCtrl},   /* left  ctrl */
 733     {0x00000008, 1, EmacsKeyMapCtrl},   /* right ctrl */
 734     {0x00000100, 0, EmacsKeyMapExtended},
 735     {0,          0, 0}
 736 };
 737
 738 static  KeyEntry Win32KeyMapExtended[] =
 739 {
 740     {/*VK_LEFT*/ 0x25,  WCEL_MoveLeft           },
 741     {/*VK_RIGHT*/0x27,  WCEL_MoveRight          },
 742     {/*VK_HOME*/ 0x24,  WCEL_MoveToBeg          },
 743     {/*VK_END*/  0x23,  WCEL_MoveToEnd          },
 744     {/*VK_UP*/   0x26,  WCEL_MoveToPrevHist     },
 745     {/*VK_DOWN*/ 0x28,  WCEL_MoveToNextHist     },
 746     {/*VK_DEL*/  0x2e,  WCEL_DeleteCurrChar     },
 747     {   0,              NULL                    }
 748 };
 749
 750 static  KeyEntry Win32KeyMapCtrlExtended[] =
 751 {
 752     {/*VK_LEFT*/ 0x25,  WCEL_MoveToLeftWord     },
 753     {/*VK_RIGHT*/0x27,  WCEL_MoveToRightWord    },
 754     {/*VK_END*/  0x23,  WCEL_KillToEndOfLine    },
 755     {   0,              NULL                    }
 756 };
 757
 758 KeyMap  Win32KeyMap[] =
 759 {
 760     {0x00000000, 1, StdKeyMap},
 761     {0x00000000, 0, Win32ExtraStdKeyMap},
 762     {0x00000100, 0, Win32KeyMapExtended},
 763     {0x00000104, 0, Win32KeyMapCtrlExtended},
 764     {0x00000108, 0, Win32KeyMapCtrlExtended},
 765     {0,          0, 0}
 766 };
 767 #undef CTRL
 768
 769 /* ====================================================================
 770  *
 771  *              Read line master function
 772  *
 773  * ====================================================================*/
 774
 775 WCHAR* CONSOLE_Readline(HANDLE hConsoleIn)
 776 {
 777     WCEL_Context        ctx;
 778     INPUT_RECORD        ir;
 779     KeyMap*             km;
 780     KeyEntry*           ke;
 781     unsigned            ofs;
 782     void                (*func)(struct WCEL_Context* ctx);
 783     DWORD               ks;
 784     int                 use_emacs;
 785
 786     memset(&ctx, 0, sizeof(ctx));
 787     ctx.hConIn = hConsoleIn;
 788     WCEL_HistoryInit(&ctx);
 789
 790     if (!CONSOLE_GetEditionMode(hConsoleIn, &use_emacs))
 791         use_emacs = 0;
 792
 793     if ((ctx.hConOut = CreateFileA("CONOUT$", GENERIC_READ|GENERIC_WRITE, 0, NULL,
 794                                     OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE ||
 795         !GetConsoleScreenBufferInfo(ctx.hConOut, &ctx.csbi))
 796         return NULL;
 797     ctx.can_wrap = (GetConsoleMode(ctx.hConOut, &ks) && (ks & ENABLE_WRAP_AT_EOL_OUTPUT)) ? 1 : 0;
 798
 799     if (!WCEL_Grow(&ctx, 1))
 800     {
 801         CloseHandle(ctx.hConOut);
 802         return NULL;
 803     }
 804     ctx.line[0] = 0;
 805
 806 /* EPP     WCEL_Dump(&ctx, "init"); */
 807
 808     while (!ctx.done && !ctx.error && WCEL_Get(&ctx, &ir))
 809     {
 810         if (ir.EventType != KEY_EVENT) continue;
 811         TRACE("key%s repeatCount=%u, keyCode=%02x scanCode=%02x char=%02x keyState=%08lx\n",
 812               ir.Event.KeyEvent.bKeyDown ? "Down" : "Up  ", ir.Event.KeyEvent.wRepeatCount,
 813               ir.Event.KeyEvent.wVirtualKeyCode, ir.Event.KeyEvent.wVirtualScanCode,
 814               ir.Event.KeyEvent.uChar.UnicodeChar, ir.Event.KeyEvent.dwControlKeyState);
 815         if (!ir.Event.KeyEvent.bKeyDown) continue;
 816
 817 /* EPP          WCEL_Dump(&ctx, "before func"); */
 818         ofs = ctx.ofs;
 819         /* mask out some bits which don't interest us */
 820         ks = ir.Event.KeyEvent.dwControlKeyState & ~(NUMLOCK_ON|SCROLLLOCK_ON|CAPSLOCK_ON);
 821
 822         func = NULL;
 823         for (km = (use_emacs) ? EmacsKeyMap : Win32KeyMap; km->entries != NULL; km++)
 824         {
 825             if (km->keyState != ks)
 826                 continue;
 827             if (km->chkChar)
 828             {
 829                 for (ke = &km->entries[0]; ke->func != 0; ke++)
 830                     if (ke->val == ir.Event.KeyEvent.uChar.UnicodeChar) break;
 831             }
 832             else
 833             {
 834                 for (ke = &km->entries[0]; ke->func != 0; ke++)
 835                     if (ke->val == ir.Event.KeyEvent.wVirtualKeyCode) break;
 836
 837             }
 838             if (ke->func)
 839             {
 840                 func = ke->func;
 841                 break;
 842             }
 843         }
 844
 845         if (func)
 846             (func)(&ctx);
 847         else if (!(ir.Event.KeyEvent.dwControlKeyState & (ENHANCED_KEY|LEFT_ALT_PRESSED)))
 848             WCEL_InsertChar(&ctx, ir.Event.KeyEvent.uChar.UnicodeChar);
 849         else TRACE("Dropped event\n");
 850
 851 /* EPP         WCEL_Dump(&ctx, "after func"); */
 852         if (ctx.ofs != ofs)
 853             SetConsoleCursorPosition(ctx.hConOut, WCEL_GetCoord(&ctx, ctx.ofs));
 854     }
 855     if (ctx.error)
 856     {
 857         HeapFree(GetProcessHeap(), 0, ctx.line);
 858         ctx.line = NULL;
 859     }
 860     WCEL_FreeYank(&ctx);
 861     if (ctx.line)
 862         CONSOLE_AppendHistory(ctx.line);
 863
 864     CloseHandle(ctx.hConOut);
 865     HeapFree(GetProcessHeap(), 0, ctx.histCurr);
 866     return ctx.line;
 867 }