1 files changed, 61 insertions, 0 deletions
diff --git a/vendor/github.com/Azure/azure-storage-blob-go/2018-03-28/azblob/zc_util_validate.go b/vendor/github.com/Azure/azure-storage-blob-go/2018-03-28/azblob/zc_util_validate.go
new file mode 100644
index 000000000..001a21c69
--- /dev/null
+++ b/vendor/github.com/Azure/azure-storage-blob-go/2018-03-28/azblob/zc_util_validate.go
@@ -0,0 +1,61 @@
+package azblob
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+)
+
+// httpRange defines a range of bytes within an HTTP resource, starting at offset and
+// ending at offset+count. A zero-value httpRange indicates the entire resource. An httpRange
+// which has an offset but na zero value count indicates from the offset to the resource's end.
+type httpRange struct {
+	offset int64
+	count  int64
+}
+
+func (r httpRange) pointers() *string {
+	if r.offset == 0 && r.count == 0 { // Do common case first for performance
+		return nil	// No specified range
+	}
+	if r.offset < 0 {
+		panic("The range offset must be >= 0")
+	}
+	if r.count < 0 {
+		panic("The range count must be >= 0")
+	}
+	endOffset := "" // if count == 0
+	if r.count > 0 {
+		endOffset = strconv.FormatInt((r.offset+r.count)-1, 10)
+	}
+	dataRange := fmt.Sprintf("bytes=%v-%s", r.offset, endOffset)
+	return &dataRange
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+func validateSeekableStreamAt0AndGetCount(body io.ReadSeeker) int64 {
+	if body == nil { // nil body's are "logically" seekable to 0 and are 0 bytes long
+		return 0
+	}
+	validateSeekableStreamAt0(body)
+	count, err := body.Seek(0, io.SeekEnd)
+	if err != nil {
+		panic("failed to seek stream")
+	}
+	body.Seek(0, io.SeekStart)
+	return count
+}
+
+func validateSeekableStreamAt0(body io.ReadSeeker) {
+	if body == nil { // nil body's are "logically" seekable to 0
+		return
+	}
+	if pos, err := body.Seek(0, io.SeekCurrent); pos != 0 || err != nil {
+		if err != nil {
+			panic(err)
+		}
+		panic(errors.New("stream must be set to position 0"))
+	}
+}