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Code Issues 1 Releases Wiki Activity

Simple fix for end of file in getline. Some code changes in getline as well.

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This commit is contained in:
Calvin Rose 2018-03-14 10:49:26 -04:00
parent 58d81d44f9
commit 7ec2efcf6d
1 changed files with 59 additions and 62 deletions
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121
src/mainclient/line.c
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@ -35,6 +35,9 @@ static void simpleline(DstBuffer *buffer) {
char c; char c;
for (;;) { for (;;) {
c = fgetc(stdin); c = fgetc(stdin);
if (feof(stdin) || c < 0) {
break;
}
dst_buffer_push_u8(buffer, (uint8_t) c); dst_buffer_push_u8(buffer, (uint8_t) c);
if (c == '\n') break; if (c == '\n') break;
} }
@ -92,42 +95,27 @@ static char **history = NULL;
static int historyi = 0; static int historyi = 0;
static struct termios termios_start; static struct termios termios_start;
/* Key codes */ /* Unsupported terminal list from linenoise */
enum KEY_ACTION { static const char *badterms[] = {
KEY_NULL = 0, /* NULL */ "cons25",
CTRL_A = 1, /* Ctrl+a */ "dumb",
CTRL_B = 2, /* Ctrl-b */ "emacs",
CTRL_C = 3, /* Ctrl-c */ NULL
CTRL_D = 4, /* Ctrl-d */
CTRL_E = 5, /* Ctrl-e */
CTRL_F = 6, /* Ctrl-f */
CTRL_H = 8, /* Ctrl-h */
TAB = 9, /* Tab */
CTRL_K = 11, /* Ctrl+k */
CTRL_L = 12, /* Ctrl+l */
ENTER = 13, /* Enter */
CTRL_N = 14, /* Ctrl-n */
CTRL_P = 16, /* Ctrl-p */
CTRL_T = 20, /* Ctrl-t */
CTRL_U = 21, /* Ctrl+u */
CTRL_W = 23, /* Ctrl+w */
ESC = 27, /* Escape */
BACKSPACE = 127 /* Backspace */
}; };
/* Ansi terminal raw mode */ /* Ansi terminal raw mode */
static int rawmode() { static int rawmode() {
struct termios raw; struct termios t;
if (!isatty(STDIN_FILENO)) goto fatal; if (!isatty(STDIN_FILENO)) goto fatal;
if (tcgetattr(STDIN_FILENO, &termios_start) == -1) goto fatal; if (tcgetattr(STDIN_FILENO, &termios_start) == -1) goto fatal;
raw = termios_start; t = termios_start;
raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON); t.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
raw.c_oflag &= ~(OPOST); t.c_oflag &= ~(OPOST);
raw.c_cflag |= (CS8); t.c_cflag |= (CS8);
raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG); t.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
raw.c_cc[VMIN] = 1; t.c_cc[VMIN] = 1;
raw.c_cc[VTIME] = 0; t.c_cc[VTIME] = 0;
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) < 0) goto fatal; if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t) < 0) goto fatal;
israwmode = 1; israwmode = 1;
return 0; return 0;
fatal: fatal:
@ -152,13 +140,11 @@ static int curpos() {
i++; i++;
} }
buf[i] = '\0'; buf[i] = '\0';
if (buf[0] != ESC || buf[1] != '[') return -1; if (buf[0] != 27 || buf[1] != '[') return -1;
if (sscanf(buf + 2, "%d;%d", &rows, &cols) != 2) return -1; if (sscanf(buf + 2, "%d;%d", &rows, &cols) != 2) return -1;
return cols; return cols;
} }
/* Try to get the number of columns in the current terminal, or assume 80
* if it fails. */
static int getcols() { static int getcols() {
struct winsize ws; struct winsize ws;
if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) { if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
@ -181,12 +167,10 @@ failed:
return 80; return 80;
} }
/* Clear the screen. Used to handle ctrl+l */
static void clear() { static void clear() {
if (write(STDOUT_FILENO,"\x1b[H\x1b[2J",7) <= 0) {} if (write(STDOUT_FILENO,"\x1b[H\x1b[2J",7) <= 0) {}
} }
/* Refresh the line */
static void refresh() { static void refresh() {
char seq[64]; char seq[64];
DstBuffer b; DstBuffer b;
@ -325,31 +309,41 @@ static int line() {
if (nread <= 0) return -1; if (nread <= 0) return -1;
switch(c) { switch(c) {
case ENTER: /* enter */ default:
if (insert(c)) return -1;
break;
case 13: /* enter */
return 0; return 0;
case CTRL_C: /* ctrl-c */ case 3: /* ctrl-c */
errno = EAGAIN; errno = EAGAIN;
return -1; return -1;
case BACKSPACE: /* backspace */ case 127: /* backspace */
case 8: /* ctrl-h */ case 8: /* ctrl-h */
kbackspace(); kbackspace();
break; break;
case CTRL_D: /* ctrl-d, eof */ case 4: /* ctrl-d, eof */
return -1; return -1;
case CTRL_B: /* ctrl-b */ case 2: /* ctrl-b */
kleft(); kleft();
break; break;
case CTRL_F: /* ctrl-f */ case 6: /* ctrl-f */
kright(); kright();
break; break;
case ESC: /* escape sequence */ case 21:
buf[0] = '\0';
pos = len = 0;
refresh();
break;
case 12:
clear();
refresh();
break;
case 27: /* escape sequence */
/* Read the next two bytes representing the escape sequence. /* Read the next two bytes representing the escape sequence.
* Use two calls to handle slow terminals returning the two * Use two calls to handle slow terminals returning the two
* chars at different times. */ * chars at different times. */
if (read(STDIN_FILENO, seq, 1) == -1) break; if (read(STDIN_FILENO, seq, 1) == -1) break;
if (read(STDIN_FILENO, seq + 1 ,1) == -1) break; if (read(STDIN_FILENO, seq + 1, 1) == -1) break;
/* ESC [ sequences. */
if (seq[0] == '[') { if (seq[0] == '[') {
if (seq[1] >= '0' && seq[1] <= '9') { if (seq[1] >= '0' && seq[1] <= '9') {
/* Extended escape, read additional byte. */ /* Extended escape, read additional byte. */
@ -362,6 +356,8 @@ static int line() {
} }
} else { } else {
switch (seq[1]) { switch (seq[1]) {
default:
break;
case 'A': case 'A':
historymove(1); historymove(1);
break; break;
@ -384,10 +380,7 @@ static int line() {
break; break;
} }
} }
} } else if (seq[0] == 'O') {
/* ESC O sequences. */
else if (seq[0] == 'O') {
switch (seq[1]) { switch (seq[1]) {
default: default:
break; break;
@ -402,18 +395,6 @@ static int line() {
} }
} }
break; break;
default:
if (insert(c)) return -1;
break;
case CTRL_U:
buf[0] = '\0';
pos = len = 0;
refresh();
break;
case CTRL_L:
clear();
refresh();
break;
} }
} }
return 0; return 0;
@ -424,13 +405,30 @@ void dst_line_init() {
} }
void dst_line_deinit() { void dst_line_deinit() {
int i;
norawmode(); norawmode();
for (i = 0; i < dst_v_count(history); i++)
free(history[i]);
dst_v_free(history); dst_v_free(history);
historyi = 0;
}
static int checktermsupport() {
const char *t = getenv("TERM");
int i;
if (!t) return 1;
for (i = 0; badterms[i]; i++)
if (!strcasecmp(t, badterms[i])) return 0;
return 1;
} }
void dst_line_get(DstBuffer *buffer) { void dst_line_get(DstBuffer *buffer) {
buffer->count = 0; buffer->count = 0;
historyi = 0; historyi = 0;
if (!isatty(STDIN_FILENO) || !checktermsupport()) {
simpleline(buffer);
return;
}
if (rawmode()) { if (rawmode()) {
simpleline(buffer); simpleline(buffer);
return; return;
@ -446,7 +444,6 @@ void dst_line_get(DstBuffer *buffer) {
memcpy(buffer->data, buf, len); memcpy(buffer->data, buf, len);
buffer->data[len] = '\n'; buffer->data[len] = '\n';
buffer->count = len + 1; buffer->count = len + 1;
replacehistory(); replacehistory();
} }