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1 | /* $Id$ */\r |
2 | /***************************************************************\r |
3 | ** I/O subsystem for PForth based on 'C'\r |
4 | **\r |
5 | ** Author: Phil Burk\r |
6 | ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom\r |
7 | **\r |
8 | ** The pForth software code is dedicated to the public domain,\r |
9 | ** and any third party may reproduce, distribute and modify\r |
10 | ** the pForth software code or any derivative works thereof\r |
11 | ** without any compensation or license. The pForth software\r |
12 | ** code is provided on an "as is" basis without any warranty\r |
13 | ** of any kind, including, without limitation, the implied\r |
14 | ** warranties of merchantability and fitness for a particular\r |
15 | ** purpose and their equivalents under the laws of any jurisdiction.\r |
16 | **\r |
17 | ****************************************************************\r |
18 | ** 941004 PLB Extracted IO calls from pforth_main.c\r |
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19 | ** 090220 PLB Fixed broken sdQueryTerminal on Mac. It always returned true.\r |
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20 | ***************************************************************/\r |
21 | \r |
22 | #include "../pf_all.h"\r |
23 | \r |
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24 | /* Configure console so that characters are not buffered.\r |
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25 | * This allows KEY and ?TERMINAL to work and also HISTORY.ON\r |
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26 | */\r |
27 | \r |
28 | #include <unistd.h>\r |
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29 | #include <sys/time.h>\r |
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30 | #ifdef sun\r |
31 | #include <sys/int_types.h> /* Needed on Solaris for uint32_t in termio.h */\r |
32 | #endif\r |
33 | #include <termios.h>\r |
34 | #include <sys/poll.h>\r |
35 | \r |
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36 | static struct termios save_termios;\r |
37 | static int stdin_is_tty;\r |
38 | \r |
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39 | /* poll() is broken in Mac OS X Tiger OS so use select() instead. */\r |
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40 | #ifndef PF_USE_SELECT\r |
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41 | #define PF_USE_SELECT (1)\r |
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42 | #endif\r |
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43 | \r |
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44 | /* Default portable terminal I/O. */\r |
45 | int sdTerminalOut( char c )\r |
46 | {\r |
47 | return putchar(c);\r |
48 | }\r |
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49 | \r |
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50 | int sdTerminalEcho( char c )\r |
51 | {\r |
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52 | putchar(c);\r |
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53 | return 0;\r |
54 | }\r |
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55 | \r |
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56 | int sdTerminalIn( void )\r |
57 | {\r |
58 | return getchar();\r |
59 | }\r |
60 | \r |
61 | int sdTerminalFlush( void )\r |
62 | {\r |
63 | #ifdef PF_NO_FILEIO\r |
64 | return -1;\r |
65 | #else\r |
66 | return fflush(PF_STDOUT);\r |
67 | #endif\r |
68 | }\r |
69 | \r |
70 | /****************************************************/\r |
71 | int sdQueryTerminal( void )\r |
72 | {\r |
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73 | #if PF_USE_SELECT\r |
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74 | int select_retval;\r |
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75 | fd_set readfds;\r |
76 | struct timeval tv;\r |
77 | FD_ZERO(&readfds);\r |
78 | FD_SET(STDIN_FILENO, &readfds);\r |
79 | /* Set timeout to zero so that we just poll and return. */\r |
80 | tv.tv_sec = 0;\r |
81 | tv.tv_usec = 0;\r |
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82 | select_retval = select(STDIN_FILENO+1, &readfds, NULL, NULL, &tv);\r |
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83 | if (select_retval < 0)\r |
84 | {\r |
85 | perror("sdTerminalInit: select");\r |
86 | }\r |
87 | return FD_ISSET(STDIN_FILENO,&readfds) ? FTRUE : FFALSE;\r |
88 | \r |
89 | #else\r |
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90 | int result;\r |
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91 | struct pollfd pfd = { 0 };\r |
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92 | sdTerminalFlush();\r |
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93 | pfd.fd = STDIN_FILENO;\r |
94 | pfd.events = POLLIN;\r |
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95 | result = poll( &pfd, 1, 0 );\r |
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96 | /* On a Mac it may set revents to POLLNVAL because poll() is broken on Tiger. */\r |
97 | if( pfd.revents & POLLNVAL )\r |
98 | {\r |
99 | PRT(("sdQueryTerminal: poll got POLLNVAL, stdin not open\n"));\r |
100 | return FFALSE;\r |
101 | }\r |
102 | else\r |
103 | {\r |
104 | return (pfd.revents & POLLIN) ? FTRUE : FFALSE;\r |
105 | }\r |
106 | #endif\r |
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107 | }\r |
108 | \r |
109 | /****************************************************/\r |
110 | void sdTerminalInit(void)\r |
111 | {\r |
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112 | struct termios term;\r |
113 | \r |
114 | stdin_is_tty = isatty(STDIN_FILENO);\r |
115 | if (stdin_is_tty)\r |
116 | { \r |
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117 | /* Get current terminal attributes and save them so we can restore them. */\r |
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118 | tcgetattr(STDIN_FILENO, &term);\r |
119 | save_termios = term;\r |
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120 | \r |
121 | /* ICANON says to wait upon read until a character is received,\r |
122 | * and then to return it immediately (or soon enough....)\r |
123 | * ECHOCTL says not to echo backspaces and other control chars as ^H */\r |
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124 | term.c_lflag &= ~( ECHO | ECHONL | ECHOCTL | ICANON );\r |
125 | term.c_cc[VTIME] = 0;\r |
126 | term.c_cc[VMIN] = 1;\r |
127 | if( tcsetattr(STDIN_FILENO, TCSANOW, &term) < 0 )\r |
128 | {\r |
129 | perror("sdTerminalInit: tcsetattr");\r |
130 | }\r |
131 | }\r |
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132 | }\r |
133 | \r |
134 | /****************************************************/\r |
135 | void sdTerminalTerm(void)\r |
136 | {\r |
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137 | if (stdin_is_tty)\r |
138 | {\r |
139 | tcsetattr(STDIN_FILENO, TCSANOW, &save_termios);\r |
140 | }\r |
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141 | }\r |