159 lines
3.1 KiB
C
159 lines
3.1 KiB
C
#include "../include/input.h"
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#include "../include/keys.h"
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/**
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* @brief Switches console raw mode
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*
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* @param on
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*/
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void change_mode(int on)
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{
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static struct termios oldt, newt;
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if (on)
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{
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tcgetattr(STDIN_FILENO, &oldt);
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newt = oldt;
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newt.c_lflag &= ~(ICANON | ECHO);
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tcsetattr(STDIN_FILENO, TCSANOW, &newt);
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}
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else
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tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
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}
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/**
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* @brief Reads line from user input and puts it into "line"
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*
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* @param line
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* @return char*
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*/
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char *read_line(char **line)
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{
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int c;
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int n = 0, pos = 0;
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while (read(STDIN_FILENO, &c, 1))
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{
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c = process_keypress(c);
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if (c)
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{
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switch (c)
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{
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case DELETE_KEY:
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delete_key(pos, &n, line);
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break;
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case LEFT_KEY:
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move_left(&pos);
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break;
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case RIGHT_KEY:
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move_right(&pos, n);
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break;
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case HOME_KEY:
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home_key(&pos);
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break;
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case END_KEY:
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end_key(&pos, n);
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break;
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case BACKSPACE_KEY:
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backspace_key(&pos, &n, line);
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break;
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case ENTER_KEY:
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new_line();
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return *line;
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break;
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case TAB_KEY:
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{
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// TODO: autocomplete
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tab_key(&pos, &n, line);
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}
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break;
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case ESCAPE_KEY:
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break;
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default:
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if ((c > 31 && c < 127) || (c > 127 && c < 255))
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printable_key(&pos, &n, (char)c, line);
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break;
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}
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}
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}
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}
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/**
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* @brief Processes user keypress, filters special characters
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*
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* @param c
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* @return int
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*/
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int process_keypress(char c)
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{
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char seq[3];
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if (c == '\x1b')
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{
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for (int i = 0; i < 2; i++)
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if (read(STDIN_FILENO, &seq[i], 1) == -1)
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return ESCAPE_KEY;
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if (seq[0] == '[')
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{
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if (seq[1] >= '0' && seq[1] <= '9')
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{
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read(STDIN_FILENO, &seq[2], 1);
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if (seq[2] == '~')
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{
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switch (seq[1])
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{
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case '3':
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return DELETE_KEY;
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break;
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}
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}
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}
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switch (seq[1])
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{
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case 'D':
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return LEFT_KEY;
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break;
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case 'C':
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return RIGHT_KEY;
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break;
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case 'H':
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return HOME_KEY;
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break;
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case 'F':
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return END_KEY;
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break;
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}
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}
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return ESCAPE_KEY;
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}
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else if (c == 127)
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{
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return BACKSPACE_KEY;
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}
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else if (c == '\n')
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{
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return ENTER_KEY;
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}
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else if (c == '\t')
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{
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return TAB_KEY;
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}
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else
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{
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return c;
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}
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} |