Create 1st draft of new assembler in go

1 files changed, 55 insertions, 0 deletions

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..101e8d7
--- /dev/null
+++ b/main.go
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+func main() {
+	if len(os.Args) != 3 {
+		fmt.Fprintf(os.Stderr, "Usage: gbasm [input_file] [output_file]")
+		os.Exit(1)
+	}
+
+	input_file_name := os.Args[1]
+	output_file_name := os.Args[2]
+
+	input_file, err := os.Open(input_file_name)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error while opening input file: %s", err.Error())
+		os.Exit(1)
+	}
+
+	input, err := io.ReadAll(input_file)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error while reading input file: %s", err.Error())
+		os.Exit(1)
+	}
+
+	lines := strings.Split(string(input), "\n")
+
+	result := []byte{}
+	for _, line := range lines {
+		next_instruction, err := Instructions.Parse(line)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%s", err.Error())
+			os.Exit(1)
+		}
+
+		result = append(result, next_instruction...)
+	}
+
+	output_file, err := os.Create(output_file_name)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error while opening output file: %s", err.Error())
+		os.Exit(1)
+	}
+
+	_, err = output_file.Write(result)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error while writing to output file: %s", err.Error())
+		os.Exit(1)
+	}
+}