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https://github.com/janet-lang/janet
synced 2024-11-28 19:19:53 +00:00
Simple fix for end of file in getline. Some code changes in getline as well.
This commit is contained in:
Calvin Rose
parent
58d81d44f9
commit
7ec2efcf6d
@ -35,6 +35,9 @@ static void simpleline(DstBuffer *buffer) {
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char c;
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for (;;) {
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c = fgetc(stdin);
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if (feof(stdin) || c < 0) {
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break;
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}
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dst_buffer_push_u8(buffer, (uint8_t) c);
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if (c == '\n') break;
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}
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@ -92,42 +95,27 @@ static char **history = NULL;
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static int historyi = 0;
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static struct termios termios_start;
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/* Key codes */
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enum KEY_ACTION {
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KEY_NULL = 0, /* NULL */
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CTRL_A = 1, /* Ctrl+a */
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CTRL_B = 2, /* Ctrl-b */
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CTRL_C = 3, /* Ctrl-c */
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CTRL_D = 4, /* Ctrl-d */
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CTRL_E = 5, /* Ctrl-e */
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CTRL_F = 6, /* Ctrl-f */
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CTRL_H = 8, /* Ctrl-h */
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TAB = 9, /* Tab */
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CTRL_K = 11, /* Ctrl+k */
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CTRL_L = 12, /* Ctrl+l */
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ENTER = 13, /* Enter */
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CTRL_N = 14, /* Ctrl-n */
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CTRL_P = 16, /* Ctrl-p */
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CTRL_T = 20, /* Ctrl-t */
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CTRL_U = 21, /* Ctrl+u */
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CTRL_W = 23, /* Ctrl+w */
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ESC = 27, /* Escape */
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BACKSPACE = 127 /* Backspace */
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/* Unsupported terminal list from linenoise */
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static const char *badterms[] = {
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"cons25",
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"dumb",
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"emacs",
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NULL
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};
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/* Ansi terminal raw mode */
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static int rawmode() {
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struct termios raw;
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struct termios t;
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if (!isatty(STDIN_FILENO)) goto fatal;
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if (tcgetattr(STDIN_FILENO, &termios_start) == -1) goto fatal;
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raw = termios_start;
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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] = 1;
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raw.c_cc[VTIME] = 0;
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) < 0) goto fatal;
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t = termios_start;
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t.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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t.c_oflag &= ~(OPOST);
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t.c_cflag |= (CS8);
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t.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
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t.c_cc[VMIN] = 1;
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t.c_cc[VTIME] = 0;
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t) < 0) goto fatal;
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israwmode = 1;
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return 0;
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fatal:
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@ -152,13 +140,11 @@ static int curpos() {
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i++;
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}
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buf[i] = '\0';
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if (buf[0] != ESC || buf[1] != '[') return -1;
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if (buf[0] != 27 || buf[1] != '[') return -1;
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if (sscanf(buf + 2, "%d;%d", &rows, &cols) != 2) return -1;
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return cols;
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}
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/* Try to get the number of columns in the current terminal, or assume 80
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* if it fails. */
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static int getcols() {
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struct winsize ws;
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if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
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@ -181,12 +167,10 @@ failed:
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return 80;
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}
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/* Clear the screen. Used to handle ctrl+l */
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static void clear() {
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if (write(STDOUT_FILENO,"\x1b[H\x1b[2J",7) <= 0) {}
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}
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/* Refresh the line */
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static void refresh() {
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char seq[64];
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DstBuffer b;
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@ -325,31 +309,41 @@ static int line() {
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if (nread <= 0) return -1;
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switch(c) {
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case ENTER: /* enter */
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default:
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if (insert(c)) return -1;
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break;
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case 13: /* enter */
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return 0;
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case CTRL_C: /* ctrl-c */
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case 3: /* ctrl-c */
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errno = EAGAIN;
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return -1;
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case BACKSPACE: /* backspace */
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case 127: /* backspace */
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case 8: /* ctrl-h */
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kbackspace();
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break;
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case CTRL_D: /* ctrl-d, eof */
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case 4: /* ctrl-d, eof */
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return -1;
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case CTRL_B: /* ctrl-b */
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case 2: /* ctrl-b */
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kleft();
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break;
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case CTRL_F: /* ctrl-f */
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case 6: /* ctrl-f */
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kright();
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break;
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case ESC: /* escape sequence */
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case 21:
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buf[0] = '\0';
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pos = len = 0;
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refresh();
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break;
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case 12:
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clear();
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refresh();
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break;
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case 27: /* escape sequence */
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/* Read the next two bytes representing the escape sequence.
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* Use two calls to handle slow terminals returning the two
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* chars at different times. */
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if (read(STDIN_FILENO, seq, 1) == -1) break;
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if (read(STDIN_FILENO, seq + 1, 1) == -1) break;
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/* ESC [ sequences. */
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if (seq[0] == '[') {
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if (seq[1] >= '0' && seq[1] <= '9') {
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/* Extended escape, read additional byte. */
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@ -362,6 +356,8 @@ static int line() {
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}
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} else {
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switch (seq[1]) {
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default:
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break;
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case 'A':
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historymove(1);
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break;
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@ -384,10 +380,7 @@ static int line() {
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break;
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}
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}
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}
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/* ESC O sequences. */
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else if (seq[0] == 'O') {
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} else if (seq[0] == 'O') {
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switch (seq[1]) {
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default:
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break;
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@ -402,18 +395,6 @@ static int line() {
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}
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}
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break;
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default:
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if (insert(c)) return -1;
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break;
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case CTRL_U:
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buf[0] = '\0';
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pos = len = 0;
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refresh();
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break;
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case CTRL_L:
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clear();
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refresh();
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break;
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}
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}
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return 0;
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@ -424,13 +405,30 @@ void dst_line_init() {
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}
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void dst_line_deinit() {
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int i;
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norawmode();
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for (i = 0; i < dst_v_count(history); i++)
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free(history[i]);
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dst_v_free(history);
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historyi = 0;
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}
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static int checktermsupport() {
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const char *t = getenv("TERM");
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int i;
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if (!t) return 1;
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for (i = 0; badterms[i]; i++)
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if (!strcasecmp(t, badterms[i])) return 0;
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return 1;
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}
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void dst_line_get(DstBuffer *buffer) {
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buffer->count = 0;
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historyi = 0;
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if (!isatty(STDIN_FILENO) || !checktermsupport()) {
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simpleline(buffer);
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return;
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}
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if (rawmode()) {
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simpleline(buffer);
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return;
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@ -446,7 +444,6 @@ void dst_line_get(DstBuffer *buffer) {
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memcpy(buffer->data, buf, len);
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buffer->data[len] = '\n';
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buffer->count = len + 1;
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replacehistory();
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}
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