commit 4c6e5dc4847bf0ce0c2ec0baecf06b489b2d19e4
parent 1454fba354853153985a55e39d75493c4649f170
Author: Byron Torres <b@torresjrjr.com>
Date: Wed, 24 Nov 2021 19:16:37 +0000
add ! subshell cmd
Diffstat:
| M | dc.ha | | | 31 | ++++++++++++++++++++++++++++++- |
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/dc.ha b/dc.ha
@@ -7,6 +7,7 @@ use getopt;
use io;
use math;
use os;
+use os::exec;
use strconv;
use strings;
@@ -79,6 +80,35 @@ fn dc(in: io::handle) void = {
// misc
case 'q' =>
os::exit(0);
+ case '!' =>
+ const cmdline = match (bufio::scanline(in)) {
+ case io::error =>
+ fmt::fatal("dc: IO error");
+ case io::EOF =>
+ fmt::errorln("dc: no shell command given")?;
+ continue;
+ case input: []u8 =>
+ yield match (strings::try_fromutf8(input)) {
+ case utf8::invalid =>
+ fmt::errorln("dc: invalid shell command input")?;
+ continue;
+ case c: str =>
+ yield c;
+ };
+ };
+ const argv = strings::split(cmdline, " ");
+ const cmd = exec::cmd(argv[0], argv[1..]...)?;
+
+ const pipe = exec::pipe();
+ exec::addfile(&cmd, pipe.1, os::stdout_file);
+
+ const proc = exec::start(&cmd)?;
+ io::close(pipe.1);
+
+ let data = io::drain(pipe.0);
+ io::close(pipe.0);
+
+ const status = exec::wait(&proc);
// printing
case 'p' =>
if (len(S) == 0) {
@@ -212,7 +242,6 @@ fn scan_number(in: io::handle) f64 = {
case r: rune =>
yield r;
};
-
if (ascii::isdigit(r) || (!seen_decimal && r == '.')) {
append(num, r: u32: u8);
if (r == '.') {
