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annotate rvinterf/libasync/ttymagic.c @ 445:9eeeef3ff7db

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os_sem_fl.c: os_QuerySemaphore() done
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 23 Jun 2014 01:19:50 +0000
parents 40b8557b9d04
children
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1 /*
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2 * This module contains the tty "magic" code for fc-tmsh.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <string.h>
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8 #include <strings.h>
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9 #include <stdlib.h>
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10 #include <unistd.h>
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11 #include <termios.h>
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12
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13 extern int ttyhacks;
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14
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15 struct termios orig_termios, our_termios;
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16
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17 #define MAX_USER_CMD 78
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18 char usercmd[MAX_USER_CMD+1];
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19 int usercmd_len;
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20
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21 void
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22 tty_init()
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23 {
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24 if (!ttyhacks)
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25 return;
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26 tcgetattr(0, &orig_termios);
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27 bcopy(&orig_termios, &our_termios, sizeof(struct termios));
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28 our_termios.c_oflag &= ~(OCRNL | ONOCR | ONLRET);
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29 our_termios.c_lflag &= ~(ICANON | ECHO);
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30 our_termios.c_cc[VMIN] = 1;
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31 our_termios.c_cc[VTIME] = 0;
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32 tcsetattr(0, TCSAFLUSH, &our_termios);
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33 putchar('>');
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34 fflush(stdout);
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35 }
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36
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37 void
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38 tty_cleanup()
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39 {
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40 if (!ttyhacks)
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41 return;
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42 tcsetattr(0, TCSAFLUSH, &orig_termios);
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43 }
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44
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45 void
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46 handle_tty_input()
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47 {
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48 char buf[256];
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49 int i, c, cc;
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50
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51 cc = read(0, buf, sizeof buf);
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52 if (cc <= 0) {
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53 tty_cleanup();
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54 exit(0);
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55 }
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56 for (i = 0; i < cc; i++) {
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57 c = buf[i];
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58 if (c >= ' ' && c <= '~') {
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59 if (usercmd_len >= MAX_USER_CMD)
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60 continue;
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61 usercmd[usercmd_len++] = c;
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62 if (ttyhacks)
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63 putchar(c); /* echo */
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64 continue;
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65 }
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66 switch (c) {
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67 case '\b':
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68 case 0x7F:
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69 if (!usercmd_len)
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70 continue;
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71 usercmd_len--;
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72 if (ttyhacks) {
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73 putchar('\b');
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74 putchar(' ');
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75 putchar('\b');
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76 }
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77 continue;
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78 case '\n':
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79 case '\r':
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80 usercmd[usercmd_len] = '\0';
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81 if (ttyhacks)
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82 putchar('\n'); /* echo */
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83 dispatch_user_cmd();
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84 usercmd_len = 0;
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85 if (ttyhacks)
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86 putchar('>'); /* new prompt */
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87 }
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88 }
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89 }
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90
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91 void
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92 async_msg_output(msg)
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93 char *msg;
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94 {
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95 int msglen, i;
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96
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97 msglen = strlen(msg);
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98 if (ttyhacks)
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99 putchar('\r');
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100 fputs(msg, stdout);
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101 if (ttyhacks)
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102 for (i = msglen; i < usercmd_len + 1; i++)
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103 putchar(' ');
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104 putchar('\n');
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105 if (!ttyhacks)
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106 return;
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107 /* reprint the input line */
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108 putchar('>');
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109 if (!usercmd_len)
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110 return;
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111 fwrite(usercmd, 1, usercmd_len, stdout);
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112 }