FreeCalypso > hg > freecalypso-tools
annotate rvinterf/libasync/ttymagic.c @ 430:06442f27b144
doc/RVTMUX: added note at the beginning about paradigm changes
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 04 Nov 2018 01:55:35 +0000 |
parents | 09b4fd9b3827 |
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rev | line source |
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1 /* |
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2 * This module contains the tty "magic" code for fc-shell and 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 */ |
e7502631a0f9
initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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108 putchar('>'); |
e7502631a0f9
initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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109 if (!usercmd_len) |
e7502631a0f9
initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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changeset
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110 return; |
e7502631a0f9
initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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111 fwrite(usercmd, 1, usercmd_len, stdout); |
e7502631a0f9
initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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112 } |