init

.gitignore

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+brainfuck-encoder

README.md

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+# Brainfuck Encoder
+Encode ASCII text to brainfuck code.
+
+## Using
+```
+# build
+go build .
+
+# run
+./brainfuck-encoder "ASCII Text" [--format|-F]
+```

go.mod

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+module git.worldc.one/sunwoo1524/brainfuck-encoder
+
+go 1.21.6

main.go

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+package main
+
+import (
+	"fmt"
+	"os"
+	"regexp"
+	"slices"
+)
+
+// encode text to brainfuck
+func encode(text string, format bool) (bf string) {
+	pointer := 0
+	ascii_codes := []rune{}
+
+	bf += "++++++++++[\n"
+
+	for _, c := range text {
+		if !slices.Contains(ascii_codes, c) {
+			ascii_codes = append(ascii_codes, c)
+
+			bf += "> "
+
+			for i := 1; i <= int(int(c)/10); i++ {
+				if i%5 == 0 {
+					bf += "+ "
+					continue
+				}
+
+				bf += "+"
+			}
+
+			bf += "\n"
+		}
+	}
+
+	for i := 0; i < len(ascii_codes); i++ {
+		bf += "<"
+	}
+
+	bf += "-\n]\n"
+
+	printed_chars := []rune{}
+
+	for _, c := range text {
+		var next_pointer int
+
+		for i, ascii := range ascii_codes {
+			if ascii == c {
+				next_pointer = i + 1
+				break
+			}
+		}
+
+		pointer_delta := next_pointer - pointer
+		delta_abs := pointer_delta
+		if pointer_delta < 0 {
+			delta_abs = -pointer_delta
+		}
+
+		for i := 0; i < delta_abs; i++ {
+			if pointer_delta < 0 {
+				bf += "<"
+				continue
+			}
+			bf += ">"
+		}
+
+		is_printed := false
+
+		for _, printed_char := range printed_chars {
+			if c == printed_char {
+				is_printed = true
+			}
+		}
+
+		if !is_printed {
+			for i := 1; i <= int(c)%10; i++ {
+				if i%5 == 0 {
+					bf += "+ "
+					continue
+				}
+				bf += "+"
+			}
+			printed_chars = append(printed_chars, c)
+		}
+
+		bf += " .\n"
+
+		pointer = next_pointer
+	}
+
+	if !format {
+		re := regexp.MustCompile(`[^><+-.,\[\]]+`)
+		bf = re.ReplaceAllString(bf, "")
+	}
+
+	return bf
+}
+
+func main() {
+	format := false // if format is true, turn on formatter
+
+	// check there are arguments
+	if len(os.Args) < 2 {
+		panic("arguments error")
+	} else if len(os.Args) >= 3 {
+		// parse flag
+		if os.Args[2] == "--format" || os.Args[2] == "-F" {
+			format = true
+		}
+	}
+
+	// get ascii text
+	text := os.Args[1]
+
+	encoded_code := encode(text, format)
+	fmt.Println(encoded_code)
+}