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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
#include "net/quic/platform/impl/quic_text_utils_impl.h"
namespace quic {
// Various utilities for manipulating text.
class QuicTextUtils {
// Returns true if |data| starts with |prefix|, case sensitively.
static bool StartsWith(QuicStringPiece data, QuicStringPiece prefix) {
return QuicTextUtilsImpl::StartsWith(data, prefix);
// Returns true if |data| ends with |suffix|, case insensitively.
static bool EndsWithIgnoreCase(QuicStringPiece data, QuicStringPiece suffix) {
return QuicTextUtilsImpl::EndsWithIgnoreCase(data, suffix);
// Returns a new string in which |data| has been converted to lower case.
static std::string ToLower(QuicStringPiece data) {
return QuicTextUtilsImpl::ToLower(data);
// Removes leading and trailing whitespace from |data|.
static void RemoveLeadingAndTrailingWhitespace(QuicStringPiece* data) {
// Returns true if |in| represents a valid uint64, and stores that value in
// |out|.
static bool StringToUint64(QuicStringPiece in, uint64_t* out) {
return QuicTextUtilsImpl::StringToUint64(in, out);
// Returns true if |in| represents a valid int, and stores that value in
// |out|.
static bool StringToInt(QuicStringPiece in, int* out) {
return QuicTextUtilsImpl::StringToInt(in, out);
// Returns true if |in| represents a valid uint32, and stores that value in
// |out|.
static bool StringToUint32(QuicStringPiece in, uint32_t* out) {
return QuicTextUtilsImpl::StringToUint32(in, out);
// Returns true if |in| represents a valid size_t, and stores that value in
// |out|.
static bool StringToSizeT(QuicStringPiece in, size_t* out) {
return QuicTextUtilsImpl::StringToSizeT(in, out);
// Returns a new string representing |in|.
static std::string Uint64ToString(uint64_t in) {
return QuicTextUtilsImpl::Uint64ToString(in);
// This converts |length| bytes of binary to a 2*|length|-character
// hexadecimal representation.
// Return value: 2*|length| characters of ASCII string.
static std::string HexEncode(const char* data, size_t length) {
return HexEncode(QuicStringPiece(data, length));
// This converts |data.length()| bytes of binary to a
// 2*|data.length()|-character hexadecimal representation.
// Return value: 2*|data.length()| characters of ASCII string.
static std::string HexEncode(QuicStringPiece data) {
return QuicTextUtilsImpl::HexEncode(data);
// This converts a uint32 into an 8-character hexidecimal
// representation. Return value: 8 characters of ASCII string.
static std::string Hex(uint32_t v) { return QuicTextUtilsImpl::Hex(v); }
// Converts |data| from a hexadecimal ASCII string to a binary string
// that is |data.length()/2| bytes long.
static std::string HexDecode(QuicStringPiece data) {
return QuicTextUtilsImpl::HexDecode(data);
// Base64 encodes with no padding |data_len| bytes of |data| into |output|.
static void Base64Encode(const uint8_t* data,
size_t data_len,
std::string* output) {
return QuicTextUtilsImpl::Base64Encode(data, data_len, output);
// Returns a string containing hex and ASCII representations of |binary|,
// side-by-side in the style of hexdump. Non-printable characters will be
// printed as '.' in the ASCII output.
// For example, given the input "Hello, QUIC!\01\02\03\04", returns:
// "0x0000: 4865 6c6c 6f2c 2051 5549 4321 0102 0304 Hello,.QUIC!...."
static std::string HexDump(QuicStringPiece binary_data) {
return QuicTextUtilsImpl::HexDump(binary_data);
// Returns true if |data| contains any uppercase characters.
static bool ContainsUpperCase(QuicStringPiece data) {
return QuicTextUtilsImpl::ContainsUpperCase(data);
// Splits |data| into a vector of pieces delimited by |delim|.
static std::vector<QuicStringPiece> Split(QuicStringPiece data, char delim) {
return QuicTextUtilsImpl::Split(data, delim);
} // namespace quic