/*
- * Copyright 2016 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.
#pragma once
#define FOLLY_STRING_H_
+#include <cstdarg>
#include <exception>
-#include <stdarg.h>
#include <string>
-#include <boost/type_traits.hpp>
-#include <boost/regex/pending/unicode_iterator.hpp>
-
-#ifdef FOLLY_HAVE_DEPRECATED_ASSOC
-#ifdef _GLIBCXX_SYMVER
-#include <ext/hash_set>
-#include <ext/hash_map>
-#endif
-#endif
-
-#include <unordered_set>
#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include <boost/regex/pending/unicode_iterator.hpp>
+#include <boost/type_traits.hpp>
#include <folly/Conv.h>
-#include <folly/Demangle.h>
+#include <folly/ExceptionString.h>
#include <folly/FBString.h>
#include <folly/FBVector.h>
#include <folly/Portability.h>
* C++, use cEscape instead. This function is for display purposes
* only.
*/
-template <class String1, class String2>
-void backslashify(const String1& input, String2& output, bool hex_style=false);
-
-template <class String>
-String backslashify(const String& input, bool hex_style=false) {
- String output;
+template <class OutputString>
+void backslashify(
+ folly::StringPiece input,
+ OutputString& output,
+ bool hex_style = false);
+
+template <class OutputString = std::string>
+OutputString backslashify(StringPiece input, bool hex_style = false) {
+ OutputString output;
backslashify(input, output, hex_style);
return output;
}
* If append_output is true, append data to the output rather than
* replace it.
*/
-template<class InputString, class OutputString>
+template <class InputString, class OutputString>
bool hexlify(const InputString& input, OutputString& output,
bool append=false);
+template <class OutputString = std::string>
+OutputString hexlify(ByteRange input) {
+ OutputString output;
+ if (!hexlify(input, output)) {
+ // hexlify() currently always returns true, so this can't really happen
+ throw std::runtime_error("hexlify failed");
+ }
+ return output;
+}
+
+template <class OutputString = std::string>
+OutputString hexlify(StringPiece input) {
+ return hexlify<OutputString>(ByteRange{input});
+}
+
/**
* Same functionality as Python's binascii.unhexlify. Returns true
* on successful conversion.
*/
-template<class InputString, class OutputString>
+template <class InputString, class OutputString>
bool unhexlify(const InputString& input, OutputString& output);
+template <class OutputString = std::string>
+OutputString unhexlify(StringPiece input) {
+ OutputString output;
+ if (!unhexlify(input, output)) {
+ // unhexlify() fails if the input has non-hexidecimal characters,
+ // or if it doesn't consist of a whole number of bytes
+ throw std::domain_error("unhexlify() called with non-hex input");
+ }
+ return output;
+}
+
/*
* A pretty-printer for numbers that appends suffixes of units of the
* given type. It prints 4 sig-figs of value with the most
*/
fbstring errnoStr(int err);
-/**
- * Debug string for an exception: include type and what(), if
- * defined.
- */
-inline fbstring exceptionStr(const std::exception& e) {
-#ifdef FOLLY_HAS_RTTI
- return folly::to<fbstring>(demangle(typeid(e)), ": ", e.what());
-#else
- return folly::to<fbstring>("Exception (no RTTI available): ", e.what());
-#endif
-}
-
-// Empirically, this indicates if the runtime supports
-// std::exception_ptr, as not all (arm, for instance) do.
-#if defined(__GNUC__) && defined(__GCC_ATOMIC_INT_LOCK_FREE) && \
- __GCC_ATOMIC_INT_LOCK_FREE > 1
-inline fbstring exceptionStr(std::exception_ptr ep) {
- try {
- std::rethrow_exception(ep);
- } catch (const std::exception& e) {
- return exceptionStr(e);
- } catch (...) {
- return "<unknown exception>";
- }
-}
-#endif
-
-template<typename E>
-auto exceptionStr(const E& e)
- -> typename std::enable_if<!std::is_base_of<std::exception, E>::value,
- fbstring>::type
-{
-#ifdef FOLLY_HAS_RTTI
- return folly::to<fbstring>(demangle(typeid(e)));
-#else
- return "Exception (no RTTI available)";
-#endif
-}
-
/*
* Split a string into a list of tokens by delimiter.
*
* or not (generating empty tokens).
*/
-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,
const bool ignoreEmpty = false);
-template<class Delim, class String, class OutputType>
+template <class Delim, class String, class OutputType>
void split(const Delim& delimiter,
const String& input,
folly::fbvector<OutputType>& out,
const bool ignoreEmpty = false);
-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,
* Note that this will likely not work if the last field's target is of numeric
* type, in which case folly::to<> will throw an exception.
*/
-template <class T, class Enable = void>
-struct IsSomeVector {
- enum { value = false };
-};
-
-template <class T>
-struct IsSomeVector<std::vector<T>, void> {
- enum { value = true };
-};
-
-template <class T>
-struct IsSomeVector<fbvector<T>, void> {
- enum { value = true };
-};
-
template <class T, class Enable = void>
struct IsConvertible {
enum { value = false };
template <class T>
struct IsConvertible<
T,
- decltype(parseTo(std::declval<folly::StringPiece>(), std::declval<T&>()))> {
+ decltype(static_cast<void>(
+ parseTo(std::declval<folly::StringPiece>(), std::declval<T&>())))> {
enum { value = true };
};
return output;
}
-template <class Delim,
- class Iterator,
- typename std::enable_if<std::is_same<
- typename std::iterator_traits<Iterator>::iterator_category,
- std::random_access_iterator_tag>::value>::type* = nullptr>
+template <
+ class Delim,
+ class Iterator,
+ typename std::enable_if<std::is_same<
+ typename std::iterator_traits<Iterator>::iterator_category,
+ std::random_access_iterator_tag>::value>::type* = nullptr>
std::string join(const Delim& delimiter, Iterator begin, Iterator end) {
std::string output;
join(delimiter, begin, end, output);
* Leaves all other characters unchanged, including those with the 0x80
* bit set.
* @param str String to convert
- * @param len Length of str, in bytes
+ * @param length Length of str, in bytes
*/
void toLowerAscii(char* str, size_t length);
toLowerAscii(str.begin(), str.size());
}
-template <class Iterator = const char*,
- class Base = folly::Range<boost::u8_to_u32_iterator<Iterator>>>
+inline void toLowerAscii(std::string& str) {
+ // str[0] is legal also if the string is empty.
+ toLowerAscii(&str[0], str.size());
+}
+
+template <
+ class Iterator = const char*,
+ class Base = folly::Range<boost::u8_to_u32_iterator<Iterator>>>
class UTF8Range : public Base {
public:
/* implicit */ UTF8Range(const folly::Range<Iterator> baseRange)
baseRange.begin(), baseRange.begin(), baseRange.end()),
boost::u8_to_u32_iterator<Iterator>(
baseRange.end(), baseRange.begin(), baseRange.end())) {}
+ /* implicit */ UTF8Range(const std::string& baseString)
+ : Base(folly::Range<Iterator>(baseString)) {}
};
using UTF8StringPiece = UTF8Range<const char*>;
} // namespace folly
-// Hook into boost's type traits
-namespace boost {
-template <class T>
-struct has_nothrow_constructor<folly::basic_fbstring<T> > : true_type {
- enum { value = true };
-};
-} // namespace boost
-
#include <folly/String-inl.h>
projects / folly.git / blobdiff