1.4.5.2

EdgeNode/internal/oss/utils.go

@@ -0,0 +1,74 @@
+// Copyright 2023 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+//go:build plus
+
+package oss
+
+import (
+	rangeutils "github.com/TeaOSLab/EdgeNode/internal/utils/ranges"
+	"strconv"
+	"strings"
+)
+
+func httpRequestParseRangeHeader(rangeValue string) (result []rangeutils.Range, ok bool) {
+	// 参考RFC：https://tools.ietf.org/html/rfc7233
+	index := strings.Index(rangeValue, "=")
+	if index == -1 {
+		return
+	}
+	unit := rangeValue[:index]
+	if unit != "bytes" {
+		return
+	}
+
+	var rangeSetString = rangeValue[index+1:]
+	if len(rangeSetString) == 0 {
+		ok = true
+		return
+	}
+
+	var pieces = strings.Split(rangeSetString, ", ")
+	for _, piece := range pieces {
+		index = strings.Index(piece, "-")
+		if index == -1 {
+			return
+		}
+		first := piece[:index]
+		firstInt := int64(-1)
+
+		var err error
+		last := piece[index+1:]
+		var lastInt = int64(-1)
+
+		if len(first) > 0 {
+			firstInt, err = strconv.ParseInt(first, 10, 64)
+			if err != nil {
+				return
+			}
+
+			if len(last) > 0 {
+				lastInt, err = strconv.ParseInt(last, 10, 64)
+				if err != nil {
+					return
+				}
+				if lastInt < firstInt {
+					return
+				}
+			}
+		} else {
+			if len(last) == 0 {
+				return
+			}
+
+			lastInt, err = strconv.ParseInt(last, 10, 64)
+			if err != nil {
+				return
+			}
+			lastInt = -lastInt
+		}
+
+		result = append(result, [2]int64{firstInt, lastInt})
+	}
+
+	ok = true
+	return
+}