/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
-#ifndef FOLLY_STRING_INL_H_
-#define FOLLY_STRING_INL_H_
+#pragma once
-#include <stdexcept>
#include <iterator>
+#include <stdexcept>
-#ifndef FOLLY_BASE_STRING_H_
+#include <folly/CppAttributes.h>
+
+#ifndef FOLLY_STRING_H_
#error This file may only be included from String.h
#endif
// an octal escape sequence, or 'P' if the character is printable and
// should be printed as is.
extern const char cEscapeTable[];
-} // namespace detail
+} // namespace detail
template <class String>
void cEscape(StringPiece str, String& out) {
if (e == 'P') { // printable
++p;
} else if (e == 'O') { // octal
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
esc[1] = '0' + ((v >> 6) & 7);
esc[2] = '0' + ((v >> 3) & 7);
esc[3] = '0' + (v & 7);
++p;
last = p;
} else { // special 1-character escape
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
esc[1] = e;
out.append(esc, 2);
++p;
last = p;
}
}
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
}
namespace detail {
// Map from the character code to the hex value, or 16 if invalid hex char.
extern const unsigned char hexTable[];
-} // namespace detail
+} // namespace detail
template <class String>
void cUnescape(StringPiece str, String& out, bool strict) {
// 3 = space, replace with '+' in QUERY mode
// 4 = percent-encode
extern const unsigned char uriEscapeTable[];
-} // namespace detail
+} // namespace detail
template <class String>
void uriEscape(StringPiece str, String& out, UriEscapeMode mode) {
if (LIKELY(discriminator <= minEncode)) {
++p;
} else if (mode == UriEscapeMode::QUERY && discriminator == 3) {
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
out.push_back('+');
++p;
last = p;
} else {
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
esc[1] = hexValues[v >> 4];
esc[2] = hexValues[v & 0x0f];
out.append(esc, 3);
last = p;
}
}
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
}
template <class String>
// this is faster than calling push_back repeatedly.
while (p != str.end()) {
char c = *p;
- unsigned char v = static_cast<unsigned char>(v);
switch (c) {
case '%':
{
if (UNLIKELY(h1 == 16 || h2 == 16)) {
throw std::invalid_argument("invalid percent encode sequence");
}
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
out.push_back((h1 << 4) | h2);
p += 3;
last = p;
}
case '+':
if (mode == UriEscapeMode::QUERY) {
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
out.push_back(' ');
++p;
last = p;
break;
}
// else fallthrough
+ FOLLY_FALLTHROUGH;
default:
++p;
break;
}
}
- out.append(&*last, p - last);
+ out.append(&*last, size_t(p - last));
}
namespace detail {
return *s.start();
}
-/*
- * These output conversion templates allow us to support multiple
- * output string types, even when we are using an arbitrary
- * OutputIterator.
- */
-template<class OutStringT> struct OutputConverter {};
-
-template<> struct OutputConverter<std::string> {
- std::string operator()(StringPiece sp) const {
- return sp.toString();
- }
-};
-
-template<> struct OutputConverter<fbstring> {
- fbstring operator()(StringPiece sp) const {
- return sp.toFbstring();
- }
-};
-
-template<> struct OutputConverter<StringPiece> {
- StringPiece operator()(StringPiece sp) const { return sp; }
-};
-
/*
* Shared implementation for all the split() overloads.
*
*
* @param ignoreEmpty iff true, don't copy empty segments to output
*/
-template<class OutStringT, class DelimT, class OutputIterator>
+template <class OutStringT, class DelimT, class OutputIterator>
void internalSplit(DelimT delim, StringPiece sp, OutputIterator out,
bool ignoreEmpty) {
assert(sp.empty() || sp.start() != nullptr);
const size_t strSize = sp.size();
const size_t dSize = delimSize(delim);
- OutputConverter<OutStringT> conv;
-
if (dSize > strSize || dSize == 0) {
if (!ignoreEmpty || strSize > 0) {
- *out++ = conv(sp);
+ *out++ = to<OutStringT>(sp);
}
return;
}
ignoreEmpty);
}
- int tokenStartPos = 0;
- int tokenSize = 0;
+ size_t tokenStartPos = 0;
+ size_t tokenSize = 0;
for (size_t i = 0; i <= strSize - dSize; ++i) {
if (atDelim(&s[i], delim)) {
if (!ignoreEmpty || tokenSize > 0) {
- *out++ = conv(StringPiece(&s[tokenStartPos], tokenSize));
+ *out++ = to<OutStringT>(sp.subpiece(tokenStartPos, tokenSize));
}
tokenStartPos = i + dSize;
}
tokenSize = strSize - tokenStartPos;
if (!ignoreEmpty || tokenSize > 0) {
- *out++ = conv(StringPiece(&s[tokenStartPos], tokenSize));
+ *out++ = to<OutStringT>(sp.subpiece(tokenStartPos, tokenSize));
}
}
-template<class String> StringPiece prepareDelim(const String& s) {
+template <class String> StringPiece prepareDelim(const String& s) {
return StringPiece(s);
}
inline char prepareDelim(char c) { return c; }
-template <class Dst>
-struct convertTo {
- template <class Src>
- static Dst from(const Src& src) { return folly::to<Dst>(src); }
- static Dst from(const Dst& src) { return src; }
-};
-
-template<bool exact,
- class Delim,
- class OutputType>
-typename std::enable_if<IsSplitTargetType<OutputType>::value, bool>::type
-splitFixed(const Delim& delimiter,
- StringPiece input,
- OutputType& out) {
+template <bool exact, class Delim, class OutputType>
+bool splitFixed(const Delim& delimiter, StringPiece input, OutputType& output) {
+ static_assert(
+ exact || std::is_same<OutputType, StringPiece>::value ||
+ IsSomeString<OutputType>::value,
+ "split<false>() requires that the last argument be a string type");
if (exact && UNLIKELY(std::string::npos != input.find(delimiter))) {
return false;
}
- out = convertTo<OutputType>::from(input);
+ output = folly::to<OutputType>(input);
return true;
}
-template<bool exact,
- class Delim,
- class OutputType,
- class... OutputTypes>
-typename std::enable_if<IsSplitTargetType<OutputType>::value, bool>::type
-splitFixed(const Delim& delimiter,
- StringPiece input,
- OutputType& outHead,
- OutputTypes&... outTail) {
+template <bool exact, class Delim, class OutputType, class... OutputTypes>
+bool splitFixed(
+ const Delim& delimiter,
+ StringPiece input,
+ OutputType& outHead,
+ OutputTypes&... outTail) {
size_t cut = input.find(delimiter);
if (UNLIKELY(cut == std::string::npos)) {
return false;
StringPiece tail(input.begin() + cut + detail::delimSize(delimiter),
input.end());
if (LIKELY(splitFixed<exact>(delimiter, tail, outTail...))) {
- outHead = convertTo<OutputType>::from(head);
+ outHead = folly::to<OutputType>(head);
return true;
}
return false;
}
-}
+} // namespace detail
//////////////////////////////////////////////////////////////////////
-template<class Delim, class String, class OutputType>
+template <class Delim, class String, class OutputType>
void split(const Delim& delimiter,
const String& input,
std::vector<OutputType>& out,
ignoreEmpty);
}
-template<class Delim, class String, class OutputType>
+template <class Delim, class String, class OutputType>
void split(const Delim& delimiter,
const String& input,
fbvector<OutputType>& out,
ignoreEmpty);
}
-template<class OutputValueType, class Delim, class String,
- class OutputIterator>
+template <
+ class OutputValueType,
+ class Delim,
+ class String,
+ class OutputIterator>
void splitTo(const Delim& delimiter,
const String& input,
OutputIterator out,
ignoreEmpty);
}
-template<bool exact,
- class Delim,
- class OutputType,
- class... OutputTypes>
-typename std::enable_if<IsSplitTargetType<OutputType>::value, bool>::type
-split(const Delim& delimiter,
- StringPiece input,
- OutputType& outHead,
- OutputTypes&... outTail) {
+template <bool exact, class Delim, class... OutputTypes>
+typename std::enable_if<
+ AllConvertible<OutputTypes...>::value && sizeof...(OutputTypes) >= 1,
+ bool>::type
+split(const Delim& delimiter, StringPiece input, OutputTypes&... outputs) {
return detail::splitFixed<exact>(
- detail::prepareDelim(delimiter),
- input,
- outHead,
- outTail...);
+ detail::prepareDelim(delimiter), input, outputs...);
}
namespace detail {
internalJoinAppend(delimiter, begin, end, output);
}
-} // namespace detail
+} // namespace detail
template <class Delim, class Iterator, class String>
void join(const Delim& delimiter,
output);
}
-template <class String1, class String2>
-void backslashify(const String1& input, String2& output, bool hex_style) {
+template <class OutputString>
+void backslashify(
+ folly::StringPiece input,
+ OutputString& output,
+ bool hex_style) {
static const char hexValues[] = "0123456789abcdef";
output.clear();
output.reserve(3 * input.size());
if (hex_style) {
hex_append = true;
} else {
- if (c == '\r') output += 'r';
- else if (c == '\n') output += 'n';
- else if (c == '\t') output += 't';
- else if (c == '\a') output += 'a';
- else if (c == '\b') output += 'b';
- else if (c == '\0') output += '0';
- else if (c == '\\') output += '\\';
- else {
+ if (c == '\r') {
+ output += 'r';
+ } else if (c == '\n') {
+ output += 'n';
+ } else if (c == '\t') {
+ output += 't';
+ } else if (c == '\a') {
+ output += 'a';
+ } else if (c == '\b') {
+ output += 'b';
+ } else if (c == '\0') {
+ output += '0';
+ } else if (c == '\\') {
+ output += '\\';
+ } else {
hex_append = true;
}
}
template <class String1, class String2>
void humanify(const String1& input, String2& output) {
- int numUnprintable = 0;
- int numPrintablePrefix = 0;
+ size_t numUnprintable = 0;
+ size_t numPrintablePrefix = 0;
for (unsigned char c : input) {
if (c < 0x20 || c > 0x7e || c == '\\') {
++numUnprintable;
}
}
-template<class InputString, class OutputString>
+template <class InputString, class OutputString>
bool hexlify(const InputString& input, OutputString& output,
bool append_output) {
- if (!append_output) output.clear();
+ if (!append_output) {
+ output.clear();
+ }
static char hexValues[] = "0123456789abcdef";
- int j = output.size();
+ auto j = output.size();
output.resize(2 * input.size() + output.size());
for (size_t i = 0; i < input.size(); ++i) {
int ch = input[i];
return true;
}
-template<class InputString, class OutputString>
+template <class InputString, class OutputString>
bool unhexlify(const InputString& input, OutputString& output) {
if (input.size() % 2 != 0) {
return false;
}
output.resize(input.size() / 2);
int j = 0;
- auto unhex = [](char c) -> int {
- return c >= '0' && c <= '9' ? c - '0' :
- c >= 'A' && c <= 'F' ? c - 'A' + 10 :
- c >= 'a' && c <= 'f' ? c - 'a' + 10 :
- -1;
- };
for (size_t i = 0; i < input.size(); i += 2) {
- int highBits = unhex(input[i]);
- int lowBits = unhex(input[i + 1]);
- if (highBits < 0 || lowBits < 0) {
+ int highBits = detail::hexTable[static_cast<uint8_t>(input[i])];
+ int lowBits = detail::hexTable[static_cast<uint8_t>(input[i + 1])];
+ if ((highBits | lowBits) & 0x10) {
+ // One of the characters wasn't a hex digit
return false;
}
output[j++] = (highBits << 4) + lowBits;
*/
size_t hexDumpLine(const void* ptr, size_t offset, size_t size,
std::string& line);
-} // namespace detail
+} // namespace detail
template <class OutIt>
void hexDump(const void* ptr, size_t size, OutIt out) {
}
}
-} // namespace folly
-
-#endif /* FOLLY_STRING_INL_H_ */
+} // namespace folly
projects / folly.git / blobdiff