Adding modding folder with a hacked build.

2026-09-26 08:53:08 +02:00
parent cdb960dc71
commit c91080aba7
755 changed files with 50424 additions and 0 deletions
@@ -0,0 +1,67 @@
+package rle
+
+import (
+	"io"
+
+	"github.com/inkyblackness/hacked/ss1"
+)
+
+const (
+	errUndefinedCase ss1.StringError = "undefined case 80 nn C0"
+)
+
+// Decompress decompresses from the given reader and writes into the provided output buffer.
+// The output buffer must be pre-allocated.
+// If it contains non-zero data, this data may be preserved if the compressed data specifies to.
+func Decompress(reader io.Reader, output []byte) (err error) {
+	outIndex := 0
+	done := false
+	nextByte := func() byte {
+		zz := []byte{0x00}
+		_, err = reader.Read(zz)
+		return zz[0]
+	}
+
+	for !done && (err == nil) {
+		first := nextByte()
+
+		switch {
+		case first == 0x00:
+			nn := nextByte()
+			zz := nextByte()
+
+			outIndex += writeBytesOfValue(output[outIndex:outIndex+int(nn)], func() byte { return zz })
+		case first < 0x80:
+			outIndex += writeBytesOfValue(output[outIndex:outIndex+int(first)], nextByte)
+		case first == 0x80:
+			control := uint16(nextByte())
+			control += uint16(nextByte()) << 8
+			switch {
+			case control == 0x0000:
+				done = true
+			case control < 0x8000:
+				outIndex += int(control)
+			case control < 0xC000:
+				outIndex += writeBytesOfValue(output[outIndex:outIndex+int(control&0x3FFF)], nextByte)
+			case (control & 0xFF00) == 0xC000:
+				err = errUndefinedCase
+			default:
+				zz := nextByte()
+
+				outIndex += writeBytesOfValue(output[outIndex:outIndex+int(control&0x3FFF)], func() byte { return zz })
+			}
+		default:
+			outIndex += int(first & 0x7F)
+		}
+	}
+
+	return
+}
+
+func writeBytesOfValue(buffer []byte, producer func() byte) int {
+	count := len(buffer)
+	for i := 0; i < count; i++ {
+		buffer[i] = producer()
+	}
+	return count
+}