| 62 | builtin_t builtinClear = {.name = "clear", .func = LShBuiltin_Clear}; |
| 63 | |
| 64 | void ReadLine(){ |
| 65 | tcsetattr(STDOUT_FILENO, TCSANOW, &readAttributes); |
| 66 | |
| 67 | bool esc = false; |
| 68 | bool csi = false; |
| 69 | int lnPos = 0; |
| 70 | ln.clear(); |
| 71 | |
| 72 | for(int i = 0; ; i++){ |
| 73 | char ch; |
| 74 | while((ch = getchar()) == EOF); |
| 75 | |
| 76 | if(esc){ |
| 77 | if(ch == '['){ |
| 78 | csi = true; |
| 79 | } |
| 80 | esc = false; |
| 81 | } else if (csi) { |
| 82 | switch(ch){ |
| 83 | case 'A': // Cursor Up |
| 84 | break; |
| 85 | case 'B': // Cursor Down |
| 86 | break; |
| 87 | case 'C': // Cursor Right |
| 88 | if(lnPos < static_cast<int>(ln.length())){ |
| 89 | lnPos++; |
| 90 | printf("\e[C"); |
| 91 | } |
| 92 | break; |
| 93 | case 'D': // Cursor Left |
| 94 | lnPos--; |
| 95 | if(lnPos < 0){ |
| 96 | lnPos = 0; |
| 97 | } else { |
| 98 | printf("\e[D"); |
| 99 | } |
| 100 | break; |
| 101 | case 'F': // End |
| 102 | printf("\e[%uC", static_cast<int>(ln.length()) - lnPos); |
| 103 | lnPos = ln.length(); |
| 104 | break; |
| 105 | case 'H': // Home |
| 106 | printf("\e[%dD", lnPos); |
| 107 | lnPos = 0; |
| 108 | break; |
| 109 | } |
| 110 | csi = false; |
| 111 | } else if(ch == '\b'){ |
| 112 | if(lnPos > 0){ |
| 113 | lnPos--; |
| 114 | ln.erase(lnPos, 1); |
| 115 | putc(ch, stdout); |
| 116 | } |
| 117 | } else if(ch == '\n'){ |
| 118 | putc(ch, stdout); |
| 119 | break; |
| 120 | } else if(ch == '\e'){ |
| 121 | esc = true; |