项目初始化

reader.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"bytes"
+	"io"
+)
+
+func ReadAfterSeq(r io.Reader, size int64, seq byte, callback func([]byte)) {
+	var (
+		bytes1  []byte
+		pointer int64
+	)
+	for {
+		buf := make([]byte, 200)
+		n, err := r.Read(buf)
+		int64n := int64(n)
+
+		if err == io.EOF {
+			break
+		}
+		var begin int64 = -1
+		// 若之前指针就大于设置长度开始指向头
+		if pointer >= size {
+			begin = 0
+		} else if pointer+int64n >= size { // 若尾巴大于
+			begin = size - pointer
+		}
+		pointer += int64n
+		if begin == -1 {
+			continue
+		}
+
+		// 查看当前片段是否存在分隔符
+		for _, b := range buf[begin:n] {
+			// if b == 13 {
+			// 	continue
+			// }
+			if b == seq {
+				bytes2 := bytes.TrimSpace(bytes1)
+				if len(bytes2) > 0 {
+					callback(bytes2)
+					bytes1 = nil
+				}
+				continue
+			}
+			bytes1 = append(bytes1, b)
+		}
+
+	}
+	if len(bytes1) > 0 {
+		callback(bytes1)
+	}
+}