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added os/isatty, do not enable colors if stdout is not a tty

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This commit is contained in:
Ico Doornekamp 2023-06-02 10:52:13 +02:00
parent e97299fc65
commit e0ea844d50
2 changed files with 21 additions and 1 deletions
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4
src/boot/boot.janet
View File

@ -3903,7 +3903,9 @@
(if-let [jp (getenv-alias "JANET_PATH")] (setdyn *syspath* jp))
(if-let [jprofile (getenv-alias "JANET_PROFILE")] (setdyn *profilepath* jprofile))
(set colorize (not (getenv-alias "NO_COLOR")))
(set colorize (and
(not (getenv-alias "NO_COLOR"))
(os/isatty stdout)))
(defn- get-lint-level
[i]

18
src/core/os.c
View File

@ -1431,6 +1431,23 @@ JANET_CORE_FN(os_sleep,
return janet_wrap_nil();
}
JANET_CORE_FN(os_isatty,
"(os/isatty &opt file)",
"Returns true if `file` is a terminal. If `file` is not specified, "
"it will default to standard output.") {
janet_arity(argc, 0, 1);
FILE *f = (argc == 1) ? janet_getfile(argv, 0, NULL) : stdout;
#ifdef JANET_WINDOWS
int fd = _fileno(f);
if (fd == -1) janet_panicv(janet_ev_lasterr());
return janet_wrap_boolean(_isatty(fd));
#else
int fd = fileno(f);
if (fd == -1) janet_panicv(janet_ev_lasterr());
return janet_wrap_boolean(isatty(fd));
#endif
}
JANET_CORE_FN(os_cwd,
"(os/cwd)",
"Returns the current working directory.") {
@ -2469,6 +2486,7 @@ void janet_lib_os(JanetTable *env) {
JANET_CORE_REG("os/date", os_date), /* not high resolution */
JANET_CORE_REG("os/strftime", os_strftime),
JANET_CORE_REG("os/sleep", os_sleep),
JANET_CORE_REG("os/isatty", os_isatty),
/* env functions */
JANET_CORE_REG("os/environ", os_environ),