Add clang-format configuration, clean up
This commit is contained in:
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a3de2c367e
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aa2f951ff4
GPG Key ID:
A0420B94F92B9493
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@ -0,0 +1,10 @@
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BasedOnStyle: LLVM
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ColumnLimit: 80
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IndentWidth: 4
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TabWidth: 4
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UseTab: ForContinuationAndIndentation
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SpaceAfterCStyleCast: true
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AlignAfterOpenBracket: DontAlign
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AlignOperands: DontAlign
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AlignConsecutiveMacros: Consecutive
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Cpp11BracedListStyle: false
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142
termtest.c
142
termtest.c
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@ -17,17 +17,17 @@
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// NOTE: We don't need to and will not free any memory. This is intentional.
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <unistd.h>
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#include <poll.h>
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#include <termios.h>
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#include <sys/ioctl.h>
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#include <glob.h>
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#include <poll.h>
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#include <sys/ioctl.h>
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#include <termios.h>
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#include <unistd.h>
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#include <curses.h>
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#include <term.h>
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@ -65,7 +65,7 @@ static bool tty_cbreak() {
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return false;
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if (tcgetattr(STDIN_FILENO, &buf) < 0 || (buf.c_lflag & (ECHO | ICANON)) ||
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buf.c_cc[VMIN] != 1 || buf.c_cc[VTIME] != 0) {
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buf.c_cc[VMIN] != 1 || buf.c_cc[VTIME] != 0) {
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tcsetattr(STDIN_FILENO, TCSAFLUSH, &saved_termios);
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return false;
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}
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@ -76,17 +76,25 @@ static bool tty_cbreak() {
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// if it didn't manage to get a response, or when an error has happened.
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static char *comm(const char *req, bool wait_first) {
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ssize_t len = write(STDOUT_FILENO, req, strlen(req));
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if (len < strlen(req)) return NULL;
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if (len < strlen(req))
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return NULL;
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struct pollfd pfd = { .fd = STDIN_FILENO, .events = POLLIN };
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if (wait_first) poll(&pfd, 1, -1);
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if (wait_first)
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poll(&pfd, 1, -1);
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int lag = getenv("SSH_CONNECTION") ? 250 : 50;
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char buf[1000] = ""; size_t buf_len = 0; int n = 0;
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char buf[1000] = "";
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size_t buf_len = 0;
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int n = 0;
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while ((n = poll(&pfd, 1, lag /* unreliable, timing-dependent */))) {
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if (n < 0) return NULL;
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if (n < 0)
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return NULL;
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len = read(STDIN_FILENO, buf + buf_len, sizeof buf - buf_len - 1);
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if (len <= 0) return NULL;
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if (len <= 0)
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return NULL;
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buf_len += len;
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}
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return strdup(buf);
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@ -96,29 +104,44 @@ enum { DEC_UNKNOWN, DEC_SET, DEC_RESET, DEC_PERMSET, DEC_PERMRESET };
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// decrpmstr returns a textual description of a DECRPM response.
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static const char *decrpmstr(int status) {
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if (status == DEC_UNKNOWN) return "unknown";
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if (status == DEC_SET) return "set";
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if (status == DEC_RESET) return "reset";
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if (status == DEC_PERMSET) return "permanently set";
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if (status == DEC_PERMRESET) return "permanently reset";
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return "?";
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switch (status) {
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case DEC_UNKNOWN:
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return "unknown";
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case DEC_SET:
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return "set";
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case DEC_RESET:
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return "reset";
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case DEC_PERMSET:
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return "permanently set";
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case DEC_PERMRESET:
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return "permanently reset";
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default:
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return "?";
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}
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}
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// parse_decrpm returns whether the mode response is valid (result >= 0),
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// as well as the terminal's response if it is, see the DEC_* constants.
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static int parse_decrpm(const char *resp) {
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// E.g., \x1b[?1000;2$y
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if (resp[0] != '\x1b' || resp[1] != '[' || resp[2] != '?') return -1;
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char *end = NULL; errno = 0; long mode = strtol(resp + 3, &end, 10);
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if (errno || mode < 0 || *end != ';') return -1;
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if (!isdigit(end[1]) || end[2] != '$' || end[3] != 'y' || end[4]) return -1;
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if (resp[0] != '\x1b' || resp[1] != '[' || resp[2] != '?')
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return -1;
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char *end = NULL;
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errno = 0;
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long mode = strtol(resp + 3, &end, 10);
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if (errno || mode < 0 || *end != ';')
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return -1;
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if (!isdigit(end[1]) || end[2] != '$' || end[3] != 'y' || end[4])
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return -1;
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return end[1] - '0';
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}
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// deccheck checks whether a particular DEC mode is supported, whether it is
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// enabled, and returns that information as a string.
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static const char *deccheck(int number) {
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char buf[1000] = ""; snprintf(buf, sizeof buf, CSI "?%d$p", number);
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char buf[1000] = "";
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snprintf(buf, sizeof buf, CSI "?%d$p", number);
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return decrpmstr(parse_decrpm(comm(buf, false)));
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}
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@ -134,8 +157,8 @@ static void test_mouse(int mode) {
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unsigned int b = -1, x = -1, y = -1;
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unsigned char bc = -1, xc = -1, yc = -1, m = -1;
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if (sscanf(resp, CSI "M%c%c%c", &bc, &xc, &yc) == 3
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&& bc >= 32 && xc >= 32 && yc >= 32) {
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if (sscanf(resp, CSI "M%c%c%c", &bc, &xc, &yc) == 3 &&
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bc >= 32 && xc >= 32 && yc >= 32) {
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// Beware that this isn't compatible with xterm run with the -lc switch.
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if (strlen(resp) > 6) {
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printf("1005? ");
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@ -145,13 +168,13 @@ static void test_mouse(int mode) {
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} else {
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printf("1000/1005 (%d @ %d,%d)\n", bc - 32, xc - 32, yc - 32);
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}
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} else if (sscanf(resp, CSI "<%u;%u;%u%c", &b, &x, &y, &m) == 4
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&& (m == 'm' || m == 'M')) {
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} else if (sscanf(resp, CSI "<%u;%u;%u%c", &b, &x, &y, &m) == 4 &&
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(m == 'm' || m == 'M')) {
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printf("%s (%u%c @ %u,%u)\n",
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(x > ws.ws_col || y > ws.ws_row) ? "1016" : "1006/1016",
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b, m, x, y);
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} else if (sscanf(resp, CSI "%u;%u;%u%c", &b, &x, &y, &m) == 4
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&& m == 'M') {
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} else if (sscanf(resp, CSI "%u;%u;%u%c", &b, &x, &y, &m) == 4 &&
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m == 'M') {
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printf("1015 (%u @ %u,%u)\n", b - 32, x, y);
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} else {
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printf("Failed to parse.\n");
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@ -163,7 +186,9 @@ static void test_mouse(int mode) {
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// parse_decrpss checks a DECRPSS sequence and cuts out the inner part.
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// Returns NULL if it fails to validate.
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static char *parse_decrpss(char *resp) {
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if (strncmp(resp, DCS "1$r", 5)) return NULL;
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if (strncmp(resp, DCS "1$r", 5))
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return NULL;
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*strpbrk(resp + 5, BEL ST8 "\x1b") = 0;
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return resp + 5;
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}
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@ -189,8 +214,9 @@ int main(int argc, char *argv[]) {
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printf("\n");
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// Initialise terminfo, this should definitely succeed.
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int err; char *term = getenv("TERM");
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if (setupterm((char *)term, 1, &err) != OK)
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int err;
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char *term = getenv("TERM");
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if (setupterm((char *) term, 1, &err) != OK)
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abort();
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// VTE wouldn't have sent a response to DECRQM otherwise!
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@ -212,7 +238,7 @@ int main(int argc, char *argv[]) {
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printf("%d\n", decrqm_supported);
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printf("-- Colours\n");
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start_color(); // Does this need initscr()? ncurses doesn't initialise.
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start_color(); // Does this need initscr()? ncurses doesn't initialise.
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printf("Terminfo: %d colours, has_colors=%d\n",
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tigetnum("colors"), has_colors());
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@ -228,7 +254,7 @@ int main(int argc, char *argv[]) {
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// user_caps(5), and comments in misc/terminfo.src. Looking for them
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// here out of curiosity, all sequences are mostly standardised.
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const char *Tc = tigetstr("Tc");
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if (Tc && Tc != (char *)-1)
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if (Tc && Tc != (char *) -1)
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printf("Terminfo: tmux extension claims direct color.\n");
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// Check the confusion, see https://gist.github.com/XVilka/8346728
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@ -269,14 +295,17 @@ int main(int argc, char *argv[]) {
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char *copy = strdup(bright_red_save + 4);
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*strpbrk(copy, BEL ST8 "\x1b") = 0;
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printf("We have read colour contents from the terminal: %s\n", copy);
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} else *bright_red_save = 0;
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} else
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*bright_red_save = 0;
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printf(CSI "0;38;5;9m" "Indexed" SGR0 " " CSI "1;31m" "Bold" SGR0 "\n");
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printf("Press a key to stop.\n");
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for (int r = 0; r < 255; r += 8) {
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char buf[1000] = "";
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snprintf(buf, sizeof buf, OSC "4;9;rgb:%02x/%02x/%02x" BEL, r, 0, 0);
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if (*comm(buf, false)) break;
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if (*comm(buf, false))
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break;
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poll(NULL, 0, 50 /* delay */);
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}
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if (*bright_red_save)
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@ -288,14 +317,16 @@ int main(int argc, char *argv[]) {
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for (int r = 0; r < 255; r += 8) {
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char buf[1000] = "";
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snprintf(buf, sizeof buf, OSC "P9%02x%02x%02x", r, 0, 0);
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if (*comm(buf, false)) break;
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if (*comm(buf, false))
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break;
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poll(NULL, 0, 50 /* delay */);
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}
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comm("\a\r", false); // Take care of unsupporting terminals.
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comm("\a\r", false); // Take care of unsupporting terminals.
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printf("-- Bold and blink attributes\n");
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bool bbc_supported = enter_bold_mode && enter_blink_mode
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&& set_a_foreground && set_a_background && exit_attribute_mode;
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bool bbc_supported = enter_bold_mode && enter_blink_mode &&
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set_a_foreground && set_a_background && exit_attribute_mode;
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printf("Terminfo: %d\n", bbc_supported);
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if (bbc_supported) {
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tputs(TIPARM(set_a_foreground, COLOR_GREEN), 1, putchar);
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@ -328,18 +359,17 @@ int main(int argc, char *argv[]) {
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printf("-- Overline attribute\n");
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const char *Smol = tigetstr("Smol");
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if (Smol && Smol != (char*)-1)
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if (Smol && Smol != (char *) -1)
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printf("Terminfo: found tmux extension.\n");
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printf(CSI "53m" "SGR test.\n" SGR0);
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printf("-- Underline colour\n");
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const char *setal = tigetstr("setal");
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const char *ol = tigetstr("ol");
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if (setal && setal != (char*)-1 &&
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ol && ol != (char*)-1)
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if (setal && setal != (char *) -1 && ol && ol != (char *) -1)
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printf("Terminfo: found mintty extension.\n");
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const char *Setulc = tigetstr("Setulc");
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if (Setulc && Setulc != (char*)-1)
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if (Setulc && Setulc != (char *) -1)
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printf("Terminfo: found tmux extension.\n");
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printf(CSI "4;58;2;0;255;0m" "SGR test." SGR0 "\n");
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printf(CSI "4;58:5:46m" "SGR test." SGR0 "\n");
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@ -347,9 +377,9 @@ int main(int argc, char *argv[]) {
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printf("-- Bar cursor\n");
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const char *Ss = tigetstr("Ss");
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const char *Se = tigetstr("Se");
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if (Ss && Ss != (char*)-1)
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if (Ss && Ss != (char *) -1)
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printf("Terminfo: found tmux extension for setting.\n");
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if (Se && Se != (char*)-1)
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if (Se && Se != (char *) -1)
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printf("Terminfo: found tmux extension for resetting.\n");
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if (parse_decrpss(comm(DCS "$q q" ST "\r", false)))
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printf("DECRQSS told us about cursor appearance!\n");
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@ -389,7 +419,8 @@ int main(int argc, char *argv[]) {
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printf("-- Sixel graphics\n");
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char *da1 = comm(CSI "c", false);
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if (!strncmp(da1, CSI "?", 3)) {
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char *p = da1 + 3, *end = p; long mode;
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char *p = da1 + 3, *end = p;
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long mode;
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while ((mode = strtol(p, &end, 10)) && (*end == ';' || *end == 'c')) {
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if (mode == 4)
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printf("DA1: the terminal claims to support Sixel graphics.\n");
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@ -421,8 +452,7 @@ int main(int argc, char *argv[]) {
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printf("-- Focus events\n");
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const char *Dsfcs = tigetstr("Dsfcs");
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const char *Enfcs = tigetstr("Enfcs");
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if (Dsfcs && Dsfcs != (char*)-1 &&
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Enfcs && Enfcs != (char*)-1)
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if (Dsfcs && Dsfcs != (char *) -1 && Enfcs && Enfcs != (char *) -1)
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printf("Terminfo: found tmux extension.\n");
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if (decrqm_supported)
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printf("DECRQM: %s\n", deccheck(1004));
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@ -430,15 +460,18 @@ int main(int argc, char *argv[]) {
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printf("Focus in and out of the window, press a key to abort.\n");
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while (true) {
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char *in = comm("", true);
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if (*in != '\x1b') break;
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else if (in[1] == '[' && in[2] == 'I') printf("Focused in.\n");
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else if (in[1] == '[' && in[2] == 'O') printf("Focused out.\n");
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if (*in != '\x1b')
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break;
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else if (in[1] == '[' && in[2] == 'I')
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printf("Focused in.\n");
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else if (in[1] == '[' && in[2] == 'O')
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printf("Focused out.\n");
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}
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comm(CSI "?1000l" CSI "?1004l", false);
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printf("-- Selection\n");
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const char *Ms = tigetstr("Ms");
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if (Ms && Ms != (char *)-1)
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if (Ms && Ms != (char *) -1)
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printf("Terminfo: found tmux extension.\n");
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char *selection = comm(OSC "52;pc;?" BEL, false);
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@ -458,8 +491,7 @@ int main(int argc, char *argv[]) {
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printf("-- Bracketed paste\n");
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const char *Dsbp = tigetstr("Dsbp");
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const char *Enbp = tigetstr("Enbp");
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if (Dsbp && Dsbp != (char*)-1 &&
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Enbp && Enbp != (char*)-1)
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if (Dsbp && Dsbp != (char *) -1 && Enbp && Enbp != (char *) -1)
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printf("Terminfo: found tmux extension.\n");
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if (decrqm_supported)
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printf("DECRQM: %s\n", deccheck(2004));
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