mirror of
https://github.com/janet-lang/janet
synced 2024-06-25 06:33:16 +00:00
135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*
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* Copyright (c) 2018 Calvin Rose
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <dst/dst.h>
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#include <dst/dstcorelib.h>
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#include <stdlib.h>
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#include <time.h>
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#ifdef DST_WINDOWS
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#include <Windows.h>
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#else
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#include <unistd.h>
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#endif
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static int os_execute(DstArgs args) {
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int nofirstarg = (args.n < 1 || !dst_checktype(args.v[0], DST_STRING));
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const char *cmd = nofirstarg
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? NULL
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: (const char *) dst_unwrap_string(args.v[0]);
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int stat = system(cmd);
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DST_RETURN(args, cmd
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? dst_wrap_integer(stat)
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: dst_wrap_boolean(stat));
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}
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static int os_getenv(DstArgs args) {
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if (args.n != 1 || !dst_checktype(args.v[0], DST_STRING))
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DST_THROW(args, "expected string");
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const char *cstr = (const char *) dst_unwrap_string(args.v[0]);
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const char *res = getenv(cstr);
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DST_RETURN(args, cstr
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? dst_cstringv(res)
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: dst_wrap_nil());
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}
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static int os_setenv(DstArgs args) {
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int t2;
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if (args.n < 2) DST_THROW(args, "expected 2 arguments");
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t2 = dst_type(args.v[1]);
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if (!dst_checktype(args.v[0], DST_STRING)
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|| (t2 != DST_STRING && t2 != DST_NIL))
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DST_THROW(args, "expected string");
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const char *k = (const char *) dst_unwrap_string(args.v[0]);
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#ifdef DST_WINDOWS
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if (t2 == DST_NIL) {
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// Investigate best way to delete env vars on windows. Use winapi?
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_putenv_s(k, "");
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} else {
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const char *v = (const char *) dst_unwrap_string(args.v[1]);
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_putenv_s(k, v);
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}
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#else
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if (t2 == DST_NIL) {
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unsetenv(k);
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} else {
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const char *v = (const char *) dst_unwrap_string(args.v[1]);
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setenv(k, v, 1);
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}
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#endif
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return 0;
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}
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static int os_exit(DstArgs args) {
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DST_MAXARITY(args, 1);
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if (args.n == 0) {
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exit(EXIT_SUCCESS);
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} else if (dst_checktype(args.v[0], DST_TRUE)
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|| dst_checktype(args.v[0], DST_FALSE)) {
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exit(dst_unwrap_boolean(args.v[0]) ? EXIT_SUCCESS : EXIT_FAILURE);
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return 0;
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} else {
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exit(dst_hash(args.v[0]));
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}
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return 0;
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}
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static int os_clock(DstArgs args) {
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DST_FIXARITY(args, 0);
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clock_t time = clock();
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double dtime = time / (double) (CLOCKS_PER_SEC);
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DST_RETURN_REAL(args, dtime);
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}
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static int os_sleep(DstArgs args) {
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int32_t delay;
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DST_FIXARITY(args, 1);
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DST_ARG_INTEGER(delay, args, 0);
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if (delay < 0) {
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DST_THROW(args, "invalid argument to sleep");
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}
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#ifdef DST_WINDOWS
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Sleep(delay);
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#else
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sleep((unsigned int) delay);
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#endif
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return 0;
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}
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static const DstReg cfuns[] = {
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{"os.execute", os_execute},
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{"os.exit", os_exit},
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{"os.getenv", os_getenv},
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{"os.setenv", os_setenv},
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{"os.clock", os_clock},
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{"os.sleep", os_sleep},
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{NULL, NULL}
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};
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/* Module entry point */
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int dst_lib_os(DstArgs args) {
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DstTable *env = dst_env_arg(args);
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dst_env_cfuns(env, cfuns);
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return 0;
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}
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