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util.pposix: Bind isatty(3)

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Useful for disabling certain behavior, ANSI colors etc when not
connected to a terminal.
This commit is contained in:
Kim Alvefur 2021-07-04 15:11:07 +02:00
parent 6f60a98b16
commit b93398ce79
2 changed files with 11 additions and 0 deletions
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2
teal-src/util/pposix.d.tl
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@ -98,6 +98,8 @@ local record pposix
atomic_append : function (f : FILE, s : string) : boolean, string, integer atomic_append : function (f : FILE, s : string) : boolean, string, integer
isatty : function(FILE) : boolean
ENOENT : integer ENOENT : integer
_NAME : string _NAME : string
_VESRION : string _VESRION : string

9
util-src/pposix.c
View file

@ -812,6 +812,13 @@ static int lc_atomic_append(lua_State *L) {
return 3; return 3;
} }
static int lc_isatty(lua_State *L) {
FILE *f = *(FILE **) luaL_checkudata(L, 1, LUA_FILEHANDLE);
const int fd = fileno(f);
lua_pushboolean(L, isatty(fd));
return 1;
}
/* Register functions */ /* Register functions */
int luaopen_util_pposix(lua_State *L) { int luaopen_util_pposix(lua_State *L) {
@ -853,6 +860,8 @@ int luaopen_util_pposix(lua_State *L) {
{ "atomic_append", lc_atomic_append }, { "atomic_append", lc_atomic_append },
{ "isatty", lc_isatty },
{ NULL, NULL } { NULL, NULL }
}; };