893 lines
19 KiB
C
893 lines
19 KiB
C
/** Includes */
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#define _DEFAULT_SOURCE
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#define _BSD_SOURCE
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#define _GNU_SOURCE
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <termios.h>
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#include <time.h>
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#include <unistd.h>
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/** defines */
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#define TTED_VERSION "0.0.1"
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#define TTED_TAB_STOP 8
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#define TTED_QUIT_TIMES 1
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#define CTRL_KEY(k) ((k) & 0x1f)
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enum editorKey {
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BACKSPACE = 127,
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ARROW_LEFT = 1000,
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ARROW_RIGHT,
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ARROW_UP,
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ARROW_DOWN,
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DEL_KEY,
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HOME_KEY,
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END_KEY,
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PAGE_UP,
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PAGE_DOWN
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};
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enum editorHighlight {
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HL_NORMAL = 0,
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HL_NUMBER,
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HL_MATCH
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};
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#define HL_HIGHLIGHT_NUMBERS (1<<0)
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/** data */
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struct editorSyntax {
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char *filetype;
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char **filematch;
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int flags;
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};
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typedef struct erow {
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int size;
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int rsize;
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char *chars;
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char *render;
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unsigned char *hl;
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} erow;
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struct editorConfig {
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int cx, cy;
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int rx;
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int rowoff;
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int coloff;
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int screenrows;
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int screencols;
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int numrows;
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erow *row;
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int dirty;
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char *filename;
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char statusmsg[80];
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time_t statusmsg_time;
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struct termios orig_termios;
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};
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struct editorConfig E;
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/** prototypes */
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void editorSetStatusMessage(const char *fmt, ...);
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void editorRefreshScreen();
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char *editorPrompt(char *prompt, void (*callback)(char *, int));
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/** terminal */
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void die(const char *s) {
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write(STDOUT_FILENO, "\x1b[2J", 4);
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write(STDOUT_FILENO, "\x1b[H", 3);
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perror(s);
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exit(1);
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}
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void disableRawMode() {
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &E.orig_termios) == -1) {
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die("tcsetattr");
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}
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}
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void enableRawMode() {
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if (tcgetattr(STDIN_FILENO, &E.orig_termios) == -1) die("tcgetattr");
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atexit(disableRawMode);
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struct termios raw = E.orig_termios;
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raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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raw.c_oflag &= ~(OPOST);
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raw.c_cflag |= (CS8);
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raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
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raw.c_cc[VMIN] = 0;
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raw.c_cc[VTIME] = 1;
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1) die("tcsetattr");
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}
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int editorReadKey() {
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int nread;
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char c;
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while ((nread = read(STDIN_FILENO, &c, 1)) != 1) {
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if (nread == -1 && errno != EAGAIN) die("read");
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}
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if (c == '\x1b') {
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char seq[3];
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if (read(STDIN_FILENO, &seq[0], 1) != 1) return '\x1b';
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if (read(STDIN_FILENO, &seq[1], 1) != 1) return '\x1b';
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if (seq[0] == '[') {
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if (seq[1] >= '0' && seq[1] <= '9') {
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if (read(STDIN_FILENO, &seq[2], 1) != 1) return '\x1b';
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if (seq[2] == '~') {
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switch (seq[1]) {
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case '1':
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return HOME_KEY;
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case '3':
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return DEL_KEY;
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case '4':
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return END_KEY;
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case '5':
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return PAGE_UP;
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case '6':
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return PAGE_DOWN;
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case '7':
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return HOME_KEY;
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case '8':
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return END_KEY;
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}
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}
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} else {
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switch (seq[1]) {
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case 'A':
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return ARROW_UP;
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case 'B':
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return ARROW_DOWN;
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case 'C':
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return ARROW_RIGHT;
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case 'D':
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return ARROW_LEFT;
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case 'H':
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return HOME_KEY;
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case 'F':
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return END_KEY;
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}
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}
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} else if (seq[0] == 'O') {
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switch (seq[1]) {
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case 'H':
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return HOME_KEY;
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case 'F':
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return END_KEY;
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}
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}
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return '\x1b';
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} else {
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return c;
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}
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}
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int getCursorPosition(int *rows, int *cols) {
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char buf[32];
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unsigned int i = 0;
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if (write(STDOUT_FILENO, "\x1b[6n", 4) != 4) return -1;
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while (i < sizeof(buf) - 1) {
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if (read(STDIN_FILENO, &buf[i], 1) != 1) break;
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if (buf[i] == 'R') break;
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i++;
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}
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buf[i] = '\0'; //assign null to final byte
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if (buf[0] != '\x1b' || buf[1] != '[') return -1;
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if (sscanf(&buf[2], "%d;%d", rows, cols) != 2) return -1;
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return 0;
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}
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int getWindowSize(int *rows, int *cols) {
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struct winsize ws;
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if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
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if (write(STDOUT_FILENO, "\x1b[999C\x1b[999B", 12) != 12) return -1;
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return getCursorPosition(rows, cols);
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} else {
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*cols = ws.ws_col;
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*rows = ws.ws_row;
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return 0;
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}
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}
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/** syntax highlighting */
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int is_separator(int c){
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return isspace(c) || c == '\0' || strchr(",.()+-/*=~%<>[];\"", c) != NULL;
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}
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void editorUpdateSyntax(erow *row){
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row->hl = realloc(row->hl, row->rsize);
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memset(row->hl, HL_NORMAL, row->rsize);
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int prev_sep = 1;
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int i = 0;
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while(i < row->rsize){
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char c = row->render[i];
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unsigned char prev_hl = (i>0) ? row->hl[i-1] : HL_NORMAL;
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if ((isdigit(c) && (prev_sep || prev_hl == HL_NUMBER))||
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(c == '.' && prev_hl == HL_NUMBER)){
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row->hl[i] = HL_NUMBER;
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i++;
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prev_sep = 0;
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continue;
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}
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prev_sep = is_separator(c);
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i++;
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}
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}
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int editorSyntaxToColor(int hl){
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switch(hl){
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case HL_NUMBER: return 31;
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case HL_MATCH: return 34;
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default: return 37;
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}
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}
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/** row operations */
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int editorRowCxToRx(erow *row, int cx) {
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int rx = 0;
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int j;
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for (j = 0; j < cx; j++) {
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if (row->chars[j] == '\t') {
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rx += (TTED_TAB_STOP - 1) - (rx % TTED_TAB_STOP);
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}
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rx++;
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}
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return rx;
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}
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int editorRowRxToCx(erow *row, int rx) {
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int cur_rx = 0;
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int cx;
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for (cx = 0; cx < row->size; cx++) {
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if(row->chars[cx] == '\t'){
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cur_rx += (TTED_TAB_STOP - 1) - (cur_rx % TTED_TAB_STOP);
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}
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cur_rx++;
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if (cur_rx > rx) return cx;
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}
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return cx;
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}
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void editorUpdateRow(erow *row) {
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int tabs = 0;
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int j;
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for (j = 0; j < row->size; j++) {
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if (row->chars[j] == '\t') {
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tabs++;
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}
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}
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free(row->render);
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row->render = malloc(row->size + tabs * (TTED_TAB_STOP - 1) + 1);
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int idx = 0;
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for (j = 0; j < row->size; j++) {
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if (row->chars[j] == '\t') {
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row->render[idx++] = ' ';
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while (idx % TTED_TAB_STOP != 0) row->render[idx++] = ' ';
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} else {
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row->render[idx++] = row->chars[j];
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}
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}
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row->render[idx] = '\0';
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row->rsize = idx;
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editorUpdateSyntax(row);
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}
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void editorInsertRow(int at, char *s, size_t len) {
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if (at < 0 || at > E.numrows) return;
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E.row = realloc(E.row, sizeof(erow) * (E.numrows + 1));
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memmove(&E.row[at +1], &E.row[at], sizeof(erow) * (E.numrows-at));
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E.row[at].size = len;
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E.row[at].chars = malloc(len + 1);
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memcpy(E.row[at].chars, s, len);
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E.row[at].chars[len] = '\0';
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E.row[at].rsize = 0;
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E.row[at].render = NULL;
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E.row[at].hl = NULL;
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editorUpdateRow(&E.row[at]);
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E.numrows++;
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E.dirty++;
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}
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void editorFreeRow(erow *row) {
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free(row->render);
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free(row->chars);
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free(row->hl);
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}
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void editorDelRow(int at) {
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if (at < 0 || at >= E.numrows) return;
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editorFreeRow(&E.row[at]);
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memmove(&E.row[at], &E.row[at + 1], sizeof(erow) * (E.numrows - at - 1));
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E.numrows--;
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E.dirty++;
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}
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void editorRowInsertChar(erow *row, int at, int c) {
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if (at < 0 || at > row->size) at = row->size;
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row->chars = realloc(row->chars, row->size + 2);
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memmove(&row->chars[at + 1], &row->chars[at], row->size - at + 1);
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row->size++;
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row->chars[at] = c;
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editorUpdateRow(row);
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E.dirty++;
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}
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void editorRowAppendString(erow *row, char *s, size_t len) {
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row->chars = realloc(row->chars, row->size + len + 1);
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memcpy(&row->chars[row->size], s, len);
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row->size += len;
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row->chars[row->size] = '\0';
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editorUpdateRow(row);
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E.dirty++;
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}
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void editorRowDelChar(erow *row, int at) {
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if (at < 0 || at >= row->size) return;
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memmove(&row->chars[at], &row->chars[at + 1], row->size - at);
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row->size--;
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editorUpdateRow(row);
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E.dirty++;
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}
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/** Editor Operatons */
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void editorInsertChar(int c) {
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if (E.cy == E.numrows) {
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editorInsertRow(E.numrows, "", 0);
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}
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editorRowInsertChar(&E.row[E.cy], E.cx, c);
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E.cx++;
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}
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void editorInsertNewLine() {
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if (E.cx == 0) {
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editorInsertRow(E.cy, "", 0);
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} else {
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erow *row = &E.row[E.cy];
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editorInsertRow(E.cy+1, &row->chars[E.cx], row->size - E.cx);
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row = &E.row[E.cy];
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row->size = E.cx;
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row->chars[row->size] = '\0';
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editorUpdateRow(row);
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}
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E.cy++;
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E.cx=0;
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}
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void editorDelChar() {
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if (E.cy == E.numrows) return;
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if (E.cx == 0 && E.cy == 0) return;
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erow *row = &E.row[E.cy];
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if (E.cx > 0) {
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editorRowDelChar(row, E.cx - 1);
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E.cx--;
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} else {
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E.cx = E.row[E.cy - 1].size;
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editorRowAppendString(&E.row[E.cy - 1], row->chars, row->size);
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editorDelRow(E.cy);
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E.cy--;
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}
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}
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/** file i/o */
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char *editorRowsToString(int *buflen) {
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int totlen = 0;
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int j;
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for (j = 0; j < E.numrows; j++) {
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totlen += E.row[j].size + 1;
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}
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*buflen = totlen;
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char *buf = malloc(totlen);
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char *p = buf;
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for (j = 0; j < E.numrows; j++) {
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memcpy(p, E.row[j].chars, E.row[j].size);
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p += E.row[j].size;
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*p = '\n';
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p++;
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}
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return buf;
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}
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void editorOpen(char *filename) {
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free(E.filename);
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E.filename = strdup(filename);
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FILE *fp = fopen(filename, "r");
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if (!fp) die("fopen");
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char *line = NULL;
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size_t linecap = 0;
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ssize_t linelen;
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while ((linelen = getline(&line, &linecap, fp)) != -1) {
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while (linelen > 0 && (line[linelen - 1] == '\n' ||
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line[linelen - 1] == '\r'))
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linelen--;
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editorInsertRow(E.numrows, line, linelen);
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}
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free(line);
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fclose(fp);
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E.dirty = 0;
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}
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void editorSave() {
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if (E.filename == NULL) {
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E.filename = editorPrompt("Save as: %s (ESC to cancel)", NULL);
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if (E.filename == NULL) {
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editorSetStatusMessage("Save aborted");
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return;
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}
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}
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int len;
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char *buf = editorRowsToString(&len);
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int fd = open(E.filename, O_RDWR | O_CREAT, 0644);
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if (fd != -1) {
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if (ftruncate(fd, len) != -1) {
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if (write(fd, buf, len) == len) {
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close(fd);
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free(buf);
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E.dirty = 0;
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editorSetStatusMessage("%d bytes written to disk", len);
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return;
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}
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}
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close(fd);
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}
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free(buf);
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}
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/** find */
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void editorFindCallback(char *query, int key) {
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static int last_match = -1;
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static int direction = 1;
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static int saved_hl_line;
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static char *saved_hl = NULL;
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if (saved_hl) {
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memcpy(E.row[saved_hl_line].hl, saved_hl, E.row[saved_hl_line].rsize);
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free(saved_hl);
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saved_hl = NULL;
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}
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if (key== '\r' || key == '\x1b') {
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last_match = -1;
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direction = 1;
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return;
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} else if (key == ARROW_RIGHT || key == ARROW_DOWN){
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direction = 1;
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} else if (key == ARROW_LEFT || key == ARROW_UP){
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direction = -1;
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} else {
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last_match = -1;
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direction = 0;
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}
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if (last_match == -1) direction = 1;
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int current = last_match;
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int i;
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for (i=0; i < E.numrows; i++){
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current += direction;
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if (current == -1) {
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current = E.numrows -1;
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} else if (current == E.numrows){
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current = 0;
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}
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erow *row = &E.row[current];
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char *match = strstr(row->render, query);
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if(match){
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last_match = current;
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E.cy = current;
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E.cx = editorRowCxToRx(row, match - row->render);
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E.rowoff = E.numrows;
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saved_hl_line = current;
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saved_hl = malloc(row->rsize);
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memcpy(saved_hl, row->hl, row->rsize);
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memset(&row->hl[match - row->render], HL_MATCH, strlen(query));
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break;
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}
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}
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}
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void editorFind() {
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int saved_cx = E.cx;
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int saved_cy = E.cy;
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int saved_coloff = E.coloff;
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int saved_rowoff = E.rowoff;
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char *query = editorPrompt("Find: %s (Use ESC/Arrows/Enter)", editorFindCallback);
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if(query){
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free(query);
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} else {
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E.cx=saved_cx;
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E.cy=saved_cy;
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E.coloff=saved_coloff;
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E.rowoff=saved_rowoff;
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}
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}
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/** append buffer */
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struct abuf {
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char *b;
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int len;
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};
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#define ABUF_INIT {NULL, 0}
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void abAppend(struct abuf *ab, const char *s, int len) {
|
|
char *new = realloc(ab->b, ab->len + len);
|
|
|
|
if (new == NULL) return;
|
|
memcpy(&new[ab->len], s, len);
|
|
ab->b = new;
|
|
ab->len += len;
|
|
}
|
|
|
|
void abFree(struct abuf *ab) {
|
|
free(ab->b);
|
|
}
|
|
|
|
|
|
/** output */
|
|
void editorScroll() {
|
|
E.rx = 0;
|
|
if (E.cy < E.numrows) {
|
|
E.rx = editorRowCxToRx(&E.row[E.cy], E.cx);
|
|
}
|
|
|
|
|
|
if (E.cy < E.rowoff) {
|
|
E.rowoff = E.cy;
|
|
}
|
|
if (E.cy >= E.rowoff + E.screenrows) {
|
|
E.rowoff = E.cy - E.screenrows + 1;
|
|
}
|
|
if (E.rx < E.coloff) {
|
|
E.coloff = E.rx;
|
|
}
|
|
if (E.rx >= E.coloff + E.screencols) {
|
|
E.coloff = E.rx - E.screencols + 1;
|
|
}
|
|
}
|
|
|
|
void editorDrawRows(struct abuf *ab) {
|
|
int y;
|
|
for (y = 0; y < E.screenrows; y++) {
|
|
int filerow = y + E.rowoff;
|
|
if (filerow >= E.numrows) { // Draw rows after buffer
|
|
if (E.numrows == 0 && y == E.screenrows / 3) {
|
|
char welcome[80];
|
|
int welcomelen = snprintf(welcome, sizeof welcome, "Tyrel Text Editor Deluxe -- version %s",
|
|
TTED_VERSION);
|
|
int padding = (E.screencols - welcomelen) / 2;
|
|
if (padding) {
|
|
abAppend(ab, "~", 1);
|
|
padding--;
|
|
}
|
|
while (padding--) abAppend(ab, " ", 1);
|
|
if (welcomelen > E.screencols) welcomelen = E.screencols;
|
|
abAppend(ab, welcome, welcomelen);
|
|
} else {
|
|
abAppend(ab, "~", 1);
|
|
}
|
|
} else { // draw buffer
|
|
int len = E.row[filerow].rsize - E.coloff;
|
|
if (len < 0) len = 0;
|
|
if (len > E.screencols) len = E.screencols; // truncate if further than columns
|
|
char *c = &E.row[filerow].render[E.coloff];
|
|
unsigned char *hl = &E.row[filerow].hl[E.coloff];
|
|
int current_color = -1;
|
|
int j;
|
|
for (j=0;j< len;j++){
|
|
if (hl[j] == HL_NORMAL){
|
|
if (current_color != -1){
|
|
abAppend(ab, "\x1b[39m", 5);
|
|
current_color = -1;
|
|
}
|
|
abAppend(ab, &c[j], 1);
|
|
} else {
|
|
int color = editorSyntaxToColor(hl[j]);
|
|
if (color != current_color) {
|
|
current_color = color;
|
|
char buf[16];
|
|
int clen = snprintf(buf, sizeof(buf), "\x1b[%dm", color);
|
|
abAppend(ab, buf, clen);
|
|
}
|
|
abAppend(ab, &c[j], 1);
|
|
}
|
|
}
|
|
abAppend(ab, "\x1b[39m", 5);
|
|
}
|
|
|
|
abAppend(ab, "\x1b[K", 3);
|
|
abAppend(ab, "\r\n", 2);
|
|
}
|
|
}
|
|
|
|
void editorDrawStatusBar(struct abuf *ab) {
|
|
abAppend(ab, "\x1b[7m", 4);
|
|
char status[80], rstatus[80];
|
|
int len = snprintf(status, sizeof(status), "%.20s - %d lines %s",
|
|
E.filename ? E.filename : "[No Name]", E.numrows,
|
|
E.dirty ? "(modified)" : "");
|
|
int rlen = snprintf(rstatus, sizeof(rstatus), "%d/%d", E.cy + 1, E.numrows);
|
|
if (len > E.screencols) len = E.screencols;
|
|
abAppend(ab, status, len);
|
|
while (len < E.screencols) {
|
|
if (E.screencols - len == rlen) {
|
|
abAppend(ab, rstatus, rlen);
|
|
break;
|
|
} else {
|
|
abAppend(ab, " ", 1);
|
|
len++;
|
|
}
|
|
}
|
|
|
|
abAppend(ab, "\x1b[m", 3);
|
|
abAppend(ab, "\r\n", 2);
|
|
}
|
|
|
|
void editorDrawMessageBar(struct abuf *ab) {
|
|
abAppend(ab, "\x1b[K", 3);
|
|
int msglen = strlen(E.statusmsg);
|
|
if (msglen > E.screencols) msglen = E.screencols;
|
|
if (msglen && time(NULL) - E.statusmsg_time < 5) {
|
|
abAppend(ab, E.statusmsg, msglen);
|
|
}
|
|
}
|
|
|
|
|
|
void editorRefreshScreen() {
|
|
editorScroll();
|
|
|
|
struct abuf ab = ABUF_INIT;
|
|
abAppend(&ab, "\x1b[?25l", 6);
|
|
abAppend(&ab, "\x1b[H", 3); // Cursor Position home
|
|
editorDrawRows(&ab);
|
|
editorDrawStatusBar(&ab);
|
|
editorDrawMessageBar(&ab);
|
|
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "\x1b[%d;%dH", (E.cy - E.rowoff) + 1, (E.rx - E.coloff) + 1);
|
|
abAppend(&ab, buf, strlen(buf));
|
|
abAppend(&ab, "\x1b[?25h", 6);
|
|
|
|
write(STDOUT_FILENO, ab.b, ab.len);
|
|
abFree(&ab);
|
|
}
|
|
|
|
void editorSetStatusMessage(const char *fmt, ...) {
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
vsnprintf(E.statusmsg, sizeof(E.statusmsg), fmt, ap);
|
|
va_end(ap);
|
|
E.statusmsg_time = time(NULL);
|
|
}
|
|
|
|
|
|
/** input */
|
|
char *editorPrompt(char *prompt, void(*callback)(char *, int)){
|
|
size_t bufsize = 128;
|
|
char *buf = malloc(bufsize);
|
|
|
|
size_t buflen = 0;
|
|
buf[0] = '\0';
|
|
|
|
while(1){
|
|
editorSetStatusMessage(prompt, buf);
|
|
editorRefreshScreen();
|
|
int c = editorReadKey();
|
|
if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
|
|
if (buflen != 0) buf[--buflen] = '\0';
|
|
} else if (c == '\x1b'){
|
|
editorSetStatusMessage("");
|
|
if (callback) callback(buf, c);
|
|
free(buf);
|
|
return NULL;
|
|
} else if (c == '\r') {
|
|
if (buflen != 0){
|
|
editorSetStatusMessage("");
|
|
if (callback) callback(buf, c);
|
|
return buf;
|
|
}
|
|
} else if (!iscntrl(c) && c < 128){
|
|
if(buflen==bufsize-1){
|
|
bufsize *=2;
|
|
buf = realloc(buf, bufsize);
|
|
}
|
|
buf[buflen++] = c;
|
|
buf[buflen] = '\0';
|
|
}
|
|
|
|
if (callback) callback(buf, c);
|
|
}
|
|
}
|
|
|
|
void editorMoveCursor(int key) {
|
|
erow *row = (E.cy >= E.numrows) ? NULL : &E.row[E.cy];
|
|
|
|
switch (key) {
|
|
case ARROW_LEFT:
|
|
if (E.cx != 0) {
|
|
E.cx--;
|
|
} else if (E.cy > 0) {
|
|
E.cy--;
|
|
E.cx = E.row[E.cy].size;
|
|
}
|
|
break;
|
|
case ARROW_RIGHT:
|
|
if (row && E.cx < row->size) {
|
|
E.cx++;
|
|
} else if (row && E.cx == row->size) {
|
|
E.cy++;
|
|
E.cx = 0;
|
|
}
|
|
break;
|
|
case ARROW_UP:
|
|
if (E.cy != 0) {
|
|
E.cy--;
|
|
}
|
|
break;
|
|
case ARROW_DOWN:
|
|
if (E.cy != E.numrows) {
|
|
E.cy++;
|
|
}
|
|
break;
|
|
}
|
|
|
|
// Snap cursor
|
|
row = (E.cy >= E.numrows) ? NULL : &E.row[E.cy];
|
|
int rowlen = row ? row->size : 0;
|
|
if (E.cx > rowlen) {
|
|
E.cx = rowlen;
|
|
}
|
|
}
|
|
|
|
void editorProcessKeypress() {
|
|
static int quit_times = TTED_QUIT_TIMES;
|
|
|
|
int c = editorReadKey();
|
|
switch (c) {
|
|
case '\r':
|
|
editorInsertNewLine();
|
|
break;
|
|
case CTRL_KEY('q'):
|
|
if (E.dirty && quit_times > 0) {
|
|
editorSetStatusMessage("WARNING!!! File has unsaved changes. "
|
|
"Press Ctrl-Q %d more times to quit.", quit_times);
|
|
quit_times--;
|
|
return;
|
|
}
|
|
|
|
write(STDOUT_FILENO, "\x1b[2J", 4);
|
|
write(STDOUT_FILENO, "\x1b[H", 3);
|
|
exit(0);
|
|
break;
|
|
case CTRL_KEY('s'):
|
|
editorSave();
|
|
break;
|
|
|
|
case HOME_KEY:
|
|
E.cx = 0;
|
|
break;
|
|
|
|
case END_KEY:
|
|
if (E.cy < E.numrows) {
|
|
E.cx = E.row[E.cy].size;
|
|
}
|
|
break;
|
|
|
|
case CTRL_KEY('f'):
|
|
editorFind();
|
|
break;
|
|
|
|
case BACKSPACE:
|
|
case CTRL_KEY('h'):
|
|
case DEL_KEY:
|
|
if (c == DEL_KEY) editorMoveCursor(ARROW_RIGHT);
|
|
editorDelChar();
|
|
break;
|
|
|
|
case PAGE_UP:
|
|
case PAGE_DOWN: {
|
|
if (c == PAGE_UP) {
|
|
E.cy = E.rowoff;
|
|
} else if (c == PAGE_DOWN) {
|
|
E.cy = E.rowoff + E.screenrows - 1;
|
|
if (E.cy > E.numrows) {
|
|
E.cy = E.numrows;
|
|
}
|
|
}
|
|
int times = E.screenrows;
|
|
while (times--)
|
|
editorMoveCursor(c == PAGE_UP ? ARROW_UP : ARROW_DOWN);
|
|
}
|
|
break;
|
|
case ARROW_UP:
|
|
case ARROW_DOWN:
|
|
case ARROW_LEFT:
|
|
case ARROW_RIGHT:
|
|
editorMoveCursor(c);
|
|
break;
|
|
case CTRL_KEY('l'):
|
|
case '\x1b':
|
|
break;
|
|
|
|
default:
|
|
editorInsertChar(c);
|
|
break;
|
|
}
|
|
|
|
quit_times = TTED_QUIT_TIMES;
|
|
}
|
|
|
|
/** init */
|
|
void initEditor() {
|
|
E.cx = 0;
|
|
E.cy = 0;
|
|
E.rx = 0;
|
|
E.rowoff = 0;
|
|
E.coloff = 0;
|
|
E.numrows = 0;
|
|
E.row = NULL;
|
|
E.dirty = 0;
|
|
E.filename = NULL;
|
|
E.statusmsg[0] = '\0';
|
|
E.statusmsg_time = 0;
|
|
|
|
if (getWindowSize(&E.screenrows, &E.screencols) == -1) die("getWindowSize");
|
|
E.screenrows -= 2;
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
enableRawMode();
|
|
initEditor();
|
|
if (argc >= 2) {
|
|
editorOpen(argv[1]);
|
|
}
|
|
|
|
editorSetStatusMessage("HELP: Ctrl-Q = quit; Ctrl-S = save; Ctrl-f = find");
|
|
|
|
while (1) {
|
|
editorRefreshScreen();
|
|
editorProcessKeypress();
|
|
}
|
|
return 0;
|
|
}
|