| The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | #include <ctype.h> |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <sys/mman.h> |
| 5 | #include <fcntl.h> |
| 6 | #include <string.h> |
| 7 | #include <termios.h> |
| 8 | #include <unistd.h> |
| 9 | |
| 10 | struct { |
| 11 | char key; |
| 12 | char *chars; |
| 13 | } map[] = { |
| 14 | { '1', "_ -1?!,.:;\"'<=>()_" }, |
| 15 | { '2', "Cabc2ABC" }, |
| 16 | { '3', "Fdef3DEF" }, |
| 17 | { '4', "Ighi4GHI" }, |
| 18 | { '5', "Ljkl5JKL" }, |
| 19 | { '6', "Omno6MNO" }, |
| 20 | { '7', "Spqrs7PQRS" }, |
| 21 | { '8', "Vtuv8TUV" }, |
| 22 | { '9', "Zwxyz9WXYZ" }, |
| 23 | { '0', "*+&0@/#*" }, |
| 24 | }; |
| 25 | |
| 26 | char next_char(char key, char current) |
| 27 | { |
| 28 | int i; |
| 29 | char *next; |
| 30 | for(i = 0; i < sizeof(map) / sizeof(map[0]); i++) { |
| 31 | if(key == map[i].key) { |
| 32 | next = strchr(map[i].chars, current); |
| 33 | if(next && next[1]) |
| 34 | return next[1]; |
| 35 | return map[i].chars[1]; |
| 36 | } |
| 37 | } |
| 38 | return key; |
| 39 | } |
| 40 | |
| 41 | char prev_char(char key, char current) |
| 42 | { |
| 43 | int i; |
| 44 | char *next; |
| 45 | for(i = 0; i < sizeof(map) / sizeof(map[0]); i++) { |
| 46 | if(key == map[i].key) { |
| 47 | next = strchr(map[i].chars+1, current); |
| 48 | if(next && next[-1]) |
| 49 | return next[-1]; |
| 50 | return map[i].chars[1]; |
| 51 | } |
| 52 | } |
| 53 | return key; |
| 54 | } |
| 55 | |
| 56 | int readtty_main(int argc, char *argv[]) |
| 57 | { |
| 58 | int c; |
| 59 | //int flags; |
| 60 | char buf[1]; |
| 61 | int res; |
| 62 | struct termios ttyarg; |
| 63 | struct termios savedttyarg; |
| 64 | int nonblock = 0; |
| 65 | int timeout = 0; |
| 66 | int flush = 0; |
| 67 | int phone = 0; |
| 68 | char *accept = NULL; |
| 69 | char *rejectstring = NULL; |
| 70 | char last_char_in = 0; |
| 71 | char current_char = 0; |
| 72 | char *exit_string = NULL; |
| 73 | int exit_match = 0; |
| 74 | |
| 75 | do { |
| 76 | c = getopt(argc, argv, "nt:fa:r:pe:"); |
| 77 | if (c == EOF) |
| 78 | break; |
| 79 | switch (c) { |
| 80 | case 't': |
| 81 | timeout = atoi(optarg); |
| 82 | break; |
| 83 | case 'n': |
| 84 | nonblock = 1; |
| 85 | break; |
| 86 | case 'f': |
| 87 | flush = 1; |
| 88 | break; |
| 89 | case 'a': |
| 90 | accept = optarg; |
| 91 | break; |
| 92 | case 'r': |
| 93 | rejectstring = optarg; |
| 94 | break; |
| 95 | case 'p': |
| 96 | phone = 1; |
| 97 | break; |
| 98 | case 'e': |
| 99 | exit_string = optarg; |
| 100 | break; |
| 101 | case '?': |
| 102 | fprintf(stderr, "%s: invalid option -%c\n", |
| 103 | argv[0], optopt); |
| 104 | exit(1); |
| 105 | } |
| 106 | } while (1); |
| 107 | |
| 108 | if(flush) |
| 109 | tcflush(STDIN_FILENO, TCIFLUSH); |
| 110 | ioctl(STDIN_FILENO, TCGETS , &savedttyarg) ; /* set changed tty arguments */ |
| 111 | ttyarg = savedttyarg; |
| 112 | ttyarg.c_cc[VMIN] = (timeout > 0 || nonblock) ? 0 : 1; /* minimum of 0 chars */ |
| 113 | ttyarg.c_cc[VTIME] = timeout; /* wait max 15/10 sec */ |
| 114 | ttyarg.c_iflag = BRKINT | ICRNL; |
| 115 | ttyarg.c_lflag &= ~(ECHO | ICANON); |
| 116 | ioctl(STDIN_FILENO, TCSETS , &ttyarg); |
| 117 | |
| 118 | while (1) { |
| 119 | res = read(STDIN_FILENO, buf, 1); |
| 120 | if(res <= 0) { |
| 121 | if(phone) { |
| 122 | if(current_char) { |
| 123 | write(STDERR_FILENO, ¤t_char, 1); |
| 124 | write(STDOUT_FILENO, ¤t_char, 1); |
| 125 | if(exit_string && current_char == exit_string[exit_match]) { |
| 126 | exit_match++; |
| 127 | if(exit_string[exit_match] == '\0') |
| 128 | break; |
| 129 | } |
| 130 | else |
| 131 | exit_match = 0; |
| 132 | current_char = 0; |
| 133 | } |
| 134 | continue; |
| 135 | } |
| 136 | break; |
| 137 | } |
| 138 | if(accept && strchr(accept, buf[0]) == NULL) { |
| 139 | if(rejectstring) { |
| 140 | write(STDOUT_FILENO, rejectstring, strlen(rejectstring)); |
| 141 | break; |
| 142 | } |
| 143 | if(flush) |
| 144 | tcflush(STDIN_FILENO, TCIFLUSH); |
| 145 | continue; |
| 146 | } |
| 147 | if(phone) { |
| 148 | //if(!isprint(buf[0])) { |
| 149 | // fprintf(stderr, "got unprintable character 0x%x\n", buf[0]); |
| 150 | //} |
| 151 | if(buf[0] == '\0') { |
| 152 | if(current_char) { |
| 153 | current_char = prev_char(last_char_in, current_char); |
| 154 | write(STDERR_FILENO, ¤t_char, 1); |
| 155 | write(STDERR_FILENO, "\b", 1); |
| 156 | } |
| 157 | continue; |
| 158 | } |
| 159 | if(current_char && buf[0] != last_char_in) { |
| 160 | write(STDERR_FILENO, ¤t_char, 1); |
| 161 | write(STDOUT_FILENO, ¤t_char, 1); |
| 162 | if(exit_string && current_char == exit_string[exit_match]) { |
| 163 | exit_match++; |
| 164 | if(exit_string[exit_match] == '\0') |
| 165 | break; |
| 166 | } |
| 167 | else |
| 168 | exit_match = 0; |
| 169 | current_char = 0; |
| 170 | } |
| 171 | last_char_in = buf[0]; |
| 172 | current_char = next_char(last_char_in, current_char); |
| 173 | write(STDERR_FILENO, ¤t_char, 1); |
| 174 | write(STDERR_FILENO, "\b", 1); |
| 175 | continue; |
| 176 | } |
| 177 | write(STDOUT_FILENO, buf, 1); |
| 178 | break; |
| 179 | } |
| 180 | ioctl(STDIN_FILENO, TCSETS , &savedttyarg) ; /* set changed tty arguments */ |
| 181 | |
| 182 | return 0; |
| 183 | } |