init:

cmd/cli/main.go

@@ -0,0 +1,112 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/Mond1c/judge/dsl"
+	"github.com/Mond1c/judge/reporter"
+	"github.com/Mond1c/judge/runner"
+)
+
+const usage = `judge — CI/CD testing system for student solutions
+
+Usage:
+  judge <tests.jdg> <solution-dir> [flags]
+
+Flags:
+  --json             output as JSON instead of text
+  --wrapper <cmd>    exec wrapper (e.g. "valgrind --error-exitcode=99")
+  --binary <name>    name of executable produced by build (overrides .jdg)
+  --help             show help
+
+Example:
+  judge lab1.jdg ./student-solution
+  judge lab1.jdg ./student-solution --json
+  judge lab1.jdg ./student-solution --wrapper "valgrind --error-exitcode=99"
+`
+
+func main() {
+	args := os.Args[1:]
+
+	if len(args) == 0 || contains(args, "--help") || contains(args, "-h") {
+		fmt.Print(usage)
+		os.Exit(0)
+	}
+
+	if len(args) < 2 {
+		fmt.Fprintf(os.Stderr, "error: need <tests.jdg> and <solution-dir>\n\n%s", usage)
+		os.Exit(1)
+	}
+
+	testFile := args[0]
+	solutionDir := args[1]
+	jsonOutput := contains(args, "--json")
+	wrapper := flagValue(args, "--wrapper")
+	binary := flagValue(args, "--binary")
+
+	src, err := os.ReadFile(testFile)
+	if err != nil {
+		fatalf("cannot read %q: %v", testFile, err)
+	}
+
+	f, warns, err := dsl.Parse(string(src))
+	if err != nil {
+		fatalf("parse error in %q:\n  %v", testFile, err)
+	}
+	for _, w := range warns {
+		fmt.Fprintf(os.Stderr, "warning: %s\n", w)
+	}
+
+	if _, err := os.Stat(solutionDir); err != nil {
+		fatalf("solution dir %q not found: %v", solutionDir, err)
+	}
+
+	r := runner.New(f, runner.Config{
+		WorkDir:    solutionDir,
+		BinaryName: binary,
+		Wrapper:    wrapper,
+	})
+	result := r.Run()
+
+	if jsonOutput {
+		if err := reporter.JSON(os.Stdout, result); err != nil {
+			fatalf("json output error: %v", err)
+		}
+	} else {
+		reporter.Text(os.Stdout, result)
+	}
+
+	if result.TotalScore < 0.9999 {
+		os.Exit(1)
+	}
+}
+
+func fatalf(msg string, args ...any) {
+	fmt.Fprintf(os.Stderr, "error: "+msg+"\n", args...)
+	os.Exit(1)
+}
+
+// flagValue returns the value of --name <value> or --name=value, else "".
+func flagValue(args []string, name string) string {
+	prefix := name + "="
+	for i, a := range args {
+		if a == name && i+1 < len(args) {
+			return args[i+1]
+		}
+		if strings.HasPrefix(a, prefix) {
+			return a[len(prefix):]
+		}
+	}
+	return ""
+}
+
+func contains(slice []string, s string) bool {
+	for _, v := range slice {
+		if v == s {
+			return true
+		}
+	}
+	return false
+}