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/* this code is not standalone |
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* it is included into linenoise.c |
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* for windows. |
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* It is deliberately kept separate so that |
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* applications that have no need for windows |
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* support can omit this |
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*/ |
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static DWORD orig_consolemode = 0; |
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static int flushOutput(struct current *current); |
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static void outputNewline(struct current *current); |
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static void refreshStart(struct current *current) |
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{ |
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(void)current; |
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} |
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static void refreshEnd(struct current *current) |
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{ |
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(void)current; |
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} |
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static void refreshStartChars(struct current *current) |
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{ |
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assert(current->output == NULL); |
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/* We accumulate all output here */ |
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current->output = sb_alloc(); |
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#ifdef USE_UTF8 |
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current->ubuflen = 0; |
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#endif |
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} |
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static void refreshNewline(struct current *current) |
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{ |
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DRL("<nl>"); |
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outputNewline(current); |
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} |
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static void refreshEndChars(struct current *current) |
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{ |
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assert(current->output); |
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flushOutput(current); |
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sb_free(current->output); |
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current->output = NULL; |
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} |
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static int enableRawMode(struct current *current) { |
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DWORD n; |
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INPUT_RECORD irec; |
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current->outh = GetStdHandle(STD_OUTPUT_HANDLE); |
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current->inh = GetStdHandle(STD_INPUT_HANDLE); |
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if (!PeekConsoleInput(current->inh, &irec, 1, &n)) { |
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return -1; |
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} |
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if (getWindowSize(current) != 0) { |
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return -1; |
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} |
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if (GetConsoleMode(current->inh, &orig_consolemode)) { |
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SetConsoleMode(current->inh, ENABLE_PROCESSED_INPUT); |
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} |
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#ifdef USE_UTF8 |
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/* XXX is this the right thing to do? */ |
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SetConsoleCP(65001); |
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#endif |
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return 0; |
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} |
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static void disableRawMode(struct current *current) |
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{ |
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SetConsoleMode(current->inh, orig_consolemode); |
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} |
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void linenoiseClearScreen(void) |
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{ |
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/* XXX: This is ugly. Should just have the caller pass a handle */ |
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struct current current; |
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current.outh = GetStdHandle(STD_OUTPUT_HANDLE); |
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if (getWindowSize(¤t) == 0) { |
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COORD topleft = { 0, 0 }; |
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DWORD n; |
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86
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FillConsoleOutputCharacter(current.outh, ' ', |
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current.cols * current.rows, topleft, &n); |
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FillConsoleOutputAttribute(current.outh, |
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FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_GREEN, |
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current.cols * current.rows, topleft, &n); |
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SetConsoleCursorPosition(current.outh, topleft); |
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} |
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} |
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static void cursorToLeft(struct current *current) |
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{ |
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COORD pos; |
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DWORD n; |
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pos.X = 0; |
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pos.Y = (SHORT)current->y; |
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103
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FillConsoleOutputAttribute(current->outh, |
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FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_GREEN, current->cols, pos, &n); |
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current->x = 0; |
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} |
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#ifdef USE_UTF8 |
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static void flush_ubuf(struct current *current) |
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{ |
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COORD pos; |
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DWORD nwritten; |
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pos.Y = (SHORT)current->y; |
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pos.X = (SHORT)current->x; |
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SetConsoleCursorPosition(current->outh, pos); |
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WriteConsoleW(current->outh, current->ubuf, current->ubuflen, &nwritten, 0); |
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current->x += current->ubufcols; |
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current->ubuflen = 0; |
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current->ubufcols = 0; |
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} |
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static void add_ubuf(struct current *current, int ch) |
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{ |
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/* This code originally by: Author: Mark E. Davis, 1994. */ |
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static const int halfShift = 10; /* used for shifting by 10 bits */ |
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static const DWORD halfBase = 0x0010000UL; |
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static const DWORD halfMask = 0x3FFUL; |
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#define UNI_SUR_HIGH_START 0xD800 |
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#define UNI_SUR_HIGH_END 0xDBFF |
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#define UNI_SUR_LOW_START 0xDC00 |
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#define UNI_SUR_LOW_END 0xDFFF |
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#define UNI_MAX_BMP 0x0000FFFF |
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if (ch > UNI_MAX_BMP) { |
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/* convert from unicode to utf16 surrogate pairs |
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* There is always space for one extra word in ubuf |
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*/ |
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ch -= halfBase; |
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current->ubuf[current->ubuflen++] = (WORD)((ch >> halfShift) + UNI_SUR_HIGH_START); |
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current->ubuf[current->ubuflen++] = (WORD)((ch & halfMask) + UNI_SUR_LOW_START); |
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} |
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else { |
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current->ubuf[current->ubuflen++] = ch; |
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} |
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current->ubufcols += utf8_width(ch); |
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if (current->ubuflen >= UBUF_MAX_CHARS) { |
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flush_ubuf(current); |
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} |
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} |
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#endif |
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static int flushOutput(struct current *current) |
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{ |
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const char *pt = sb_str(current->output); |
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int len = sb_len(current->output); |
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160
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#ifdef USE_UTF8 |
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/* convert utf8 in current->output into utf16 in current->ubuf |
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*/ |
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while (len) { |
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int ch; |
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int n = utf8_tounicode(pt, &ch); |
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pt += n; |
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len -= n; |
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add_ubuf(current, ch); |
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} |
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flush_ubuf(current); |
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#else |
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DWORD nwritten; |
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COORD pos; |
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pos.Y = (SHORT)current->y; |
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pos.X = (SHORT)current->x; |
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SetConsoleCursorPosition(current->outh, pos); |
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WriteConsoleA(current->outh, pt, len, &nwritten, 0); |
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current->x += len; |
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#endif |
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186
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sb_clear(current->output); |
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return 0; |
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} |
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static int outputChars(struct current *current, const char *buf, int len) |
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{ |
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if (len < 0) { |
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len = strlen(buf); |
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} |
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assert(current->output); |
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sb_append_len(current->output, buf, len); |
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return 0; |
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} |
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203
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static void outputNewline(struct current *current) |
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{ |
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/* On the last row output a newline to force a scroll */ |
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if (current->y + 1 == current->rows) { |
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outputChars(current, "\n", 1); |
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} |
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flushOutput(current); |
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current->x = 0; |
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current->y++; |
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} |
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214
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215
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static void setOutputHighlight(struct current *current, const int *props, int nprops) |
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{ |
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int colour = FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_GREEN; |
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218
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int bold = 0; |
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int reverse = 0; |
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int i; |
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221
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for (i = 0; i < nprops; i++) { |
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switch (props[i]) { |
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case 0: |
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colour = FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_GREEN; |
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bold = 0; |
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reverse = 0; |
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break; |
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229
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case 1: |
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230
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bold = FOREGROUND_INTENSITY; |
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231
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break; |
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232
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case 7: |
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233
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reverse = 1; |
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234
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break; |
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235
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case 30: |
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236
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colour = 0; |
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237
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break; |
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238
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case 31: |
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239
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colour = FOREGROUND_RED; |
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240
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break; |
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241
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case 32: |
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242
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colour = FOREGROUND_GREEN; |
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243
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break; |
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244
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case 33: |
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colour = FOREGROUND_RED | FOREGROUND_GREEN; |
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246
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break; |
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247
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case 34: |
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248
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colour = FOREGROUND_BLUE; |
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249
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break; |
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250
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case 35: |
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251
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colour = FOREGROUND_RED | FOREGROUND_BLUE; |
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252
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break; |
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253
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case 36: |
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254
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colour = FOREGROUND_BLUE | FOREGROUND_GREEN; |
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255
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break; |
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256
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case 37: |
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257
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colour = FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_GREEN; |
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258
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break; |
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259
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} |
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260
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} |
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261
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262
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flushOutput(current); |
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263
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264
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if (reverse) { |
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265
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SetConsoleTextAttribute(current->outh, BACKGROUND_INTENSITY); |
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266
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} |
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267
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else { |
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268
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SetConsoleTextAttribute(current->outh, colour | bold); |
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269
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} |
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270
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} |
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271
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272
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static void eraseEol(struct current *current) |
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273
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{ |
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274
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COORD pos; |
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275
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DWORD n; |
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276
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277
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pos.X = (SHORT) current->x; |
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278
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pos.Y = (SHORT) current->y; |
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279
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280
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FillConsoleOutputCharacter(current->outh, ' ', current->cols - current->x, pos, &n); |
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281
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} |
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282
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283
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static void setCursorXY(struct current *current) |
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284
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{ |
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285
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COORD pos; |
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286
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287
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pos.X = (SHORT) current->x; |
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288
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pos.Y = (SHORT) current->y; |
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289
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290
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SetConsoleCursorPosition(current->outh, pos); |
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291
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} |
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292
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293
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294
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static void setCursorPos(struct current *current, int x) |
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295
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{ |
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296
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current->x = x; |
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297
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setCursorXY(current); |
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298
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} |
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299
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300
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static void cursorUp(struct current *current, int n) |
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301
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{ |
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302
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current->y -= n; |
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303
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setCursorXY(current); |
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304
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} |
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305
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306
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static void cursorDown(struct current *current, int n) |
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307
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{ |
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308
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current->y += n; |
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309
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setCursorXY(current); |
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310
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} |
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311
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312
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static int fd_read(struct current *current) |
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313
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{ |
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314
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while (1) { |
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315
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INPUT_RECORD irec; |
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316
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DWORD n; |
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317
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if (WaitForSingleObject(current->inh, INFINITE) != WAIT_OBJECT_0) { |
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318
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break; |
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319
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} |
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320
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if (!ReadConsoleInputW(current->inh, &irec, 1, &n)) { |
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321
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break; |
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322
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} |
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323
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if (irec.EventType == KEY_EVENT) { |
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324
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KEY_EVENT_RECORD *k = &irec.Event.KeyEvent; |
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325
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if (k->bKeyDown || k->wVirtualKeyCode == VK_MENU) { |
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326
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if (k->dwControlKeyState & ENHANCED_KEY) { |
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327
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switch (k->wVirtualKeyCode) { |
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328
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case VK_LEFT: |
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329
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return SPECIAL_LEFT; |
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330
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case VK_RIGHT: |
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331
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return SPECIAL_RIGHT; |
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332
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case VK_UP: |
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333
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return SPECIAL_UP; |
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334
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case VK_DOWN: |
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335
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return SPECIAL_DOWN; |
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336
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case VK_INSERT: |
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337
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return SPECIAL_INSERT; |
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338
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case VK_DELETE: |
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339
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return SPECIAL_DELETE; |
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340
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case VK_HOME: |
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341
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return SPECIAL_HOME; |
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342
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case VK_END: |
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343
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return SPECIAL_END; |
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344
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case VK_PRIOR: |
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345
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return SPECIAL_PAGE_UP; |
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346
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case VK_NEXT: |
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347
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return SPECIAL_PAGE_DOWN; |
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348
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case VK_RETURN: |
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349
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return k->uChar.UnicodeChar; |
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350
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} |
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351
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} |
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352
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/* Note that control characters are already translated in AsciiChar */ |
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353
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else if (k->wVirtualKeyCode == VK_CONTROL) |
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354
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continue; |
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355
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else { |
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356
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return k->uChar.UnicodeChar; |
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357
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} |
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358
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} |
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359
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} |
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360
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} |
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361
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return -1; |
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362
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} |
|
363
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|
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364
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static int getWindowSize(struct current *current) |
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365
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{ |
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366
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CONSOLE_SCREEN_BUFFER_INFO info; |
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367
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if (!GetConsoleScreenBufferInfo(current->outh, &info)) { |
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368
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return -1; |
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369
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} |
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370
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current->cols = info.dwSize.X; |
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371
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current->rows = info.dwSize.Y; |
|
372
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if (current->cols <= 0 || current->rows <= 0) { |
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373
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current->cols = 80; |
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374
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return -1; |
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375
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} |
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376
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current->y = info.dwCursorPosition.Y; |
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377
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current->x = info.dwCursorPosition.X; |
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378
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return 0; |
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379
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} |
|
380
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|