ttyin.c (60786) | ttyin.c (89019) |
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1/* 2 * Copyright (C) 1984-2000 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information about less, or for information on how to 8 * contact the author, see the README file. 9 */ 10 11 12/* 13 * Routines dealing with getting input from the keyboard (i.e. from the user). 14 */ 15 16#include "less.h" | 1/* 2 * Copyright (C) 1984-2000 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information about less, or for information on how to 8 * contact the author, see the README file. 9 */ 10 11 12/* 13 * Routines dealing with getting input from the keyboard (i.e. from the user). 14 */ 15 16#include "less.h" |
17#if OS2 18#include "cmd.h" 19#include "pckeys.h" 20#endif |
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17#if MSDOS_COMPILER==WIN32C 18#include "windows.h" 19extern char WIN32getch(); 20static DWORD console_mode; 21#endif 22 23static int tty; 24extern int sigs; --- 12 unchanged lines hidden (view full) --- 37 sa.bInheritHandle = TRUE; 38 tty = (int) CreateFile("CONIN$", GENERIC_READ, 39 FILE_SHARE_READ, &sa, 40 OPEN_EXISTING, 0L, NULL); 41 GetConsoleMode((HANDLE)tty, &console_mode); 42 /* Make sure we get Ctrl+C events. */ 43 SetConsoleMode((HANDLE)tty, ENABLE_PROCESSED_INPUT); 44#else | 21#if MSDOS_COMPILER==WIN32C 22#include "windows.h" 23extern char WIN32getch(); 24static DWORD console_mode; 25#endif 26 27static int tty; 28extern int sigs; --- 12 unchanged lines hidden (view full) --- 41 sa.bInheritHandle = TRUE; 42 tty = (int) CreateFile("CONIN$", GENERIC_READ, 43 FILE_SHARE_READ, &sa, 44 OPEN_EXISTING, 0L, NULL); 45 GetConsoleMode((HANDLE)tty, &console_mode); 46 /* Make sure we get Ctrl+C events. */ 47 SetConsoleMode((HANDLE)tty, ENABLE_PROCESSED_INPUT); 48#else |
45#if MSDOS_COMPILER || OS2 | 49#if MSDOS_COMPILER |
46 extern int fd0; 47 /* 48 * Open a new handle to CON: in binary mode 49 * for unbuffered keyboard read. 50 */ 51 fd0 = dup(0); 52 close(0); 53 tty = open("CON", OPEN_READ); --- 6 unchanged lines hidden (view full) --- 60#endif 61#else 62 /* 63 * Try /dev/tty. 64 * If that doesn't work, use file descriptor 2, 65 * which in Unix is usually attached to the screen, 66 * but also usually lets you read from the keyboard. 67 */ | 50 extern int fd0; 51 /* 52 * Open a new handle to CON: in binary mode 53 * for unbuffered keyboard read. 54 */ 55 fd0 = dup(0); 56 close(0); 57 tty = open("CON", OPEN_READ); --- 6 unchanged lines hidden (view full) --- 64#endif 65#else 66 /* 67 * Try /dev/tty. 68 * If that doesn't work, use file descriptor 2, 69 * which in Unix is usually attached to the screen, 70 * but also usually lets you read from the keyboard. 71 */ |
72#if OS2 73 /* The __open() system call translates "/dev/tty" to "con". */ 74 tty = __open("/dev/tty", OPEN_READ); 75#else |
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68 tty = open("/dev/tty", OPEN_READ); | 76 tty = open("/dev/tty", OPEN_READ); |
77#endif |
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69 if (tty < 0) 70 tty = 2; 71#endif 72#endif 73} 74 75/* 76 * Close the keyboard. --- 29 unchanged lines hidden (view full) --- 106 c = WIN32getch(tty); 107#else 108 c = getch(); 109#endif 110 result = 1; 111 if (c == '\003') 112 return (READ_INTR); 113#else | 78 if (tty < 0) 79 tty = 2; 80#endif 81#endif 82} 83 84/* 85 * Close the keyboard. --- 29 unchanged lines hidden (view full) --- 115 c = WIN32getch(tty); 116#else 117 c = getch(); 118#endif 119 result = 1; 120 if (c == '\003') 121 return (READ_INTR); 122#else |
114#if OS2 115 { 116 static int scan = -1; 117 flush(); 118 if (scan >= 0) 119 { 120 c = scan; 121 scan = -1; 122 } else 123 { 124 if ((c = _read_kbd(0, 1, 0)) == -1) 125 return (READ_INTR); 126 if (c == '\0') 127 { 128 /* 129 * Zero is usually followed by another byte, 130 * since certain keys send two bytes. 131 */ 132 scan = _read_kbd(0, 0, 0); 133 } 134 } 135 result = 1; 136 } 137#else | |
138 result = iread(tty, &c, sizeof(char)); 139 if (result == READ_INTR) 140 return (READ_INTR); 141 if (result < 0) 142 { 143 /* 144 * Don't call error() here, 145 * because error calls getchr! 146 */ 147 quit(QUIT_ERROR); 148 } 149#endif | 123 result = iread(tty, &c, sizeof(char)); 124 if (result == READ_INTR) 125 return (READ_INTR); 126 if (result < 0) 127 { 128 /* 129 * Don't call error() here, 130 * because error calls getchr! 131 */ 132 quit(QUIT_ERROR); 133 } 134#endif |
150#endif | |
151 /* 152 * Various parts of the program cannot handle 153 * an input character of '\0'. 154 * If a '\0' was actually typed, convert it to '\340' here. 155 */ 156 if (c == '\0') 157 c = '\340'; 158 } while (result != 1); 159 160 return (c & 0377); 161} | 135 /* 136 * Various parts of the program cannot handle 137 * an input character of '\0'. 138 * If a '\0' was actually typed, convert it to '\340' here. 139 */ 140 if (c == '\0') 141 c = '\340'; 142 } while (result != 1); 143 144 return (c & 0377); 145} |