spl

commit c1a5309b05c504d7c3913826e097c5f1ddd0d73a
parent cf7cf45038e0ed96b310481014e19260d7d44605
Author: Brian Swetland <swetland@frotz.net>
Date:   Sat, 14 Oct 2023 00:31:34 -0700

library: argc/argv handling

Diffstat:
A
demo/args.spl
 | 
11
+++++++++++
M
inc/library.impl.c
 | 
16
++++++++++++++++
M
inc/library.impl.h
 | 
3
+++

3 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/demo/args.spl b/demo/args.spl
@@ -0,0 +1,11 @@
+
+fn start() i32 {
+	var n i32 = 0;
+	while (n < os_arg_count()) {
+		writes(1, os_arg(n));
+		writes(1, " ");
+		n++;
+	}
+	writes(1, "\n");
+	return 0;
+}
diff --git a/inc/library.impl.c b/inc/library.impl.c
@@ -30,9 +30,25 @@ int fn_readc(int fd) {
 	}
 }
 
+static int os_argc;
+static char **os_argv;
+
 int main(int argc, char** argv) {
+	os_argc = argc;
+	os_argv = argv;
 	int x = fn_start();
 	printf("X %08x\n", x);
 	return 0;
 }
 
+t$u8* fn_os_arg(int n) {
+	if ((n < 0) || (n >= os_argc)) {
+		return (void*) "";
+	}
+	return (void*) os_argv[n];
+}
+
+t$i32 fn_os_arg_count(void) {
+	return os_argc;
+}
+
diff --git a/inc/library.impl.h b/inc/library.impl.h
@@ -6,3 +6,6 @@ void fn_writes(t$i32 fd, t$str s);
 void fn_writex(t$i32 fd, t$i32 n);
 void fn_writec(t$i32 fd, t$i32 c);
 t$i32 fn_readc(t$i32 fd);
+
+t$u8* fn_os_arg(t$i32 n);
+t$i32 fn_os_arg_count(void);