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author | Christopher Speller <crspeller@gmail.com> | 2016-05-12 15:08:58 -0400 |
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committer | Christopher Speller <crspeller@gmail.com> | 2016-05-12 16:37:29 -0400 |
commit | 84d2482ddbff9564c9ad75b2d30af66e3ddfd44d (patch) | |
tree | 8bfa567d2b6381f4a996ada2deff8a16aa85a3ac /Godeps/_workspace/src/gopkg.in/asn1-ber.v1/length.go | |
parent | d1efb66ad7b017f0fbfe6f0c20843b30f396e504 (diff) | |
download | chat-84d2482ddbff9564c9ad75b2d30af66e3ddfd44d.tar.gz chat-84d2482ddbff9564c9ad75b2d30af66e3ddfd44d.tar.bz2 chat-84d2482ddbff9564c9ad75b2d30af66e3ddfd44d.zip |
Updating go depencancies. Switching to go1.6 vendoring (#2949)
Diffstat (limited to 'Godeps/_workspace/src/gopkg.in/asn1-ber.v1/length.go')
-rw-r--r-- | Godeps/_workspace/src/gopkg.in/asn1-ber.v1/length.go | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/Godeps/_workspace/src/gopkg.in/asn1-ber.v1/length.go b/Godeps/_workspace/src/gopkg.in/asn1-ber.v1/length.go deleted file mode 100644 index 8e2ae4ddd..000000000 --- a/Godeps/_workspace/src/gopkg.in/asn1-ber.v1/length.go +++ /dev/null @@ -1,71 +0,0 @@ -package ber - -import ( - "errors" - "fmt" - "io" -) - -func readLength(reader io.Reader) (length int, read int, err error) { - // length byte - b, err := readByte(reader) - if err != nil { - if Debug { - fmt.Printf("error reading length byte: %v\n", err) - } - return 0, 0, err - } - read++ - - switch { - case b == 0xFF: - // Invalid 0xFF (x.600, 8.1.3.5.c) - return 0, read, errors.New("invalid length byte 0xff") - - case b == LengthLongFormBitmask: - // Indefinite form, we have to decode packets until we encounter an EOC packet (x.600, 8.1.3.6) - length = LengthIndefinite - - case b&LengthLongFormBitmask == 0: - // Short definite form, extract the length from the bottom 7 bits (x.600, 8.1.3.4) - length = int(b) & LengthValueBitmask - - case b&LengthLongFormBitmask != 0: - // Long definite form, extract the number of length bytes to follow from the bottom 7 bits (x.600, 8.1.3.5.b) - lengthBytes := int(b) & LengthValueBitmask - // Protect against overflow - // TODO: support big int length? - if lengthBytes > 8 { - return 0, read, errors.New("long-form length overflow") - } - for i := 0; i < lengthBytes; i++ { - b, err = readByte(reader) - if err != nil { - if Debug { - fmt.Printf("error reading long-form length byte %d: %v\n", i, err) - } - return 0, read, err - } - read++ - - // x.600, 8.1.3.5 - length <<= 8 - length |= int(b) - } - - default: - return 0, read, errors.New("invalid length byte") - } - - return length, read, nil -} - -func encodeLength(length int) []byte { - length_bytes := encodeUnsignedInteger(uint64(length)) - if length > 127 || len(length_bytes) > 1 { - longFormBytes := []byte{(LengthLongFormBitmask | byte(len(length_bytes)))} - longFormBytes = append(longFormBytes, length_bytes...) - length_bytes = longFormBytes - } - return length_bytes -} |