add wasip1 experiments

Signed-off-by: Xe Iaso <me@xeiaso.net>

5 files changed, 67 insertions, 0 deletions

diff --git a/wasm/wasip1/.gitignore b/wasm/wasip1/.gitignore
new file mode 100644
index 0000000..19e1bce
--- /dev/null
+++ b/wasm/wasip1/.gitignore
@@ -0,0 +1 @@
+*.wasm
diff --git a/wasm/wasip1/Makefile b/wasm/wasip1/Makefile
new file mode 100644
index 0000000..c5cc92d
--- /dev/null
+++ b/wasm/wasip1/Makefile
@@ -0,0 +1,12 @@
+GOBIN = gowasi
+
+export GOARCH = wasm
+export GOOS = wasip1
+
+SOURCES := $(wildcard *.go)
+OBJECTS := $(patsubst %.go, %.wasm, $(SOURCES))
+
+%.wasm: %.go
+	$(GOBIN) build -o $@ $^
+
+all: $(OBJECTS)
diff --git a/wasm/wasip1/cat.go b/wasm/wasip1/cat.go
new file mode 100644
index 0000000..a327d9d
--- /dev/null
+++ b/wasm/wasip1/cat.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+)
+
+func main() {
+	flag.Usage = func() {
+		fmt.Printf("%s <file>\n\nprints file to standard out\n", os.Args[0])
+	}
+	flag.Parse()
+
+	if flag.NArg() != 1 {
+		log.Fatalf("wanted 1 arg, got %#v", os.Args)
+	}
+
+	fin, err := os.Open(flag.Arg(0))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer fin.Close()
+
+	_, err = io.Copy(os.Stdout, fin)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
diff --git a/wasm/wasip1/envdump.go b/wasm/wasip1/envdump.go
new file mode 100644
index 0000000..79dedc5
--- /dev/null
+++ b/wasm/wasip1/envdump.go
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	if len(os.Environ()) == 0 {
+		fmt.Println("No environment variables found")
+		return
+	}
+	for _, kv := range os.Environ() {
+		fmt.Println(kv)
+	}
+}
diff --git a/wasm/wasip1/hello.go b/wasm/wasip1/hello.go
new file mode 100644
index 0000000..db5bdb6
--- /dev/null
+++ b/wasm/wasip1/hello.go
@@ -0,0 +1,7 @@
+package main
+
+import "log"
+
+func main() {
+	log.Println("Hello, world!")
+}