/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2015 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <unordered_set>
#include <unordered_map>
-#include "folly/Conv.h"
-#include "folly/Demangle.h"
-#include "folly/FBString.h"
-#include "folly/FBVector.h"
-#include "folly/Portability.h"
-#include "folly/Range.h"
-#include "folly/ScopeGuard.h"
+#include <folly/Conv.h>
+#include <folly/Demangle.h>
+#include <folly/FBString.h>
+#include <folly/FBVector.h>
+#include <folly/Portability.h>
+#include <folly/Range.h>
+#include <folly/ScopeGuard.h>
// Compatibility function, to make sure toStdString(s) can be called
// to convert a std::string or fbstring variable s into type std::string
FOLLY_PRINTF_FORMAT const char* format, ...)
FOLLY_PRINTF_FORMAT_ATTR(2, 3);
+/**
+ * Similar to stringPrintf, but accepts a va_list argument.
+ *
+ * As with vsnprintf() itself, the value of ap is undefined after the call.
+ * These functions do not call va_end() on ap.
+ */
+std::string stringVPrintf(const char* format, va_list ap);
+void stringVPrintf(std::string* out, const char* format, va_list ap);
+std::string& stringVAppendf(std::string* out, const char* format, va_list ap);
+
/**
* Backslashify a string, that is, replace non-printable characters
* with C-style (but NOT C compliant) "\xHH" encoding. If hex_style
fbstring errnoStr(int err);
/**
- * Debug string for an exception: include type and what().
+ * Debug string for an exception: include type and what(), if
+ * defined.
*/
inline fbstring exceptionStr(const std::exception& e) {
return folly::to<fbstring>(demangle(typeid(e)), ": ", e.what());
}
}
+template<typename E>
+auto exceptionStr(const E& e)
+ -> typename std::enable_if<!std::is_base_of<std::exception, E>::value,
+ fbstring>::type
+{
+ return folly::to<fbstring>(demangle(typeid(e)));
+}
+
/*
* Split a string into a list of tokens by delimiter.
*
template <class T>
using IsSplitTargetType = std::integral_constant<bool,
std::is_arithmetic<T>::value ||
- std::is_same<T, StringPiece>::value>;
+ std::is_same<T, StringPiece>::value ||
+ IsSomeString<T>::value>;
template<bool exact = true,
class Delim,
return output;
}
-} // namespace folly
-
-// Hash functions to make std::string usable with e.g. hash_map
-//
-// Handle interaction with different C++ standard libraries, which
-// expect these types to be in different namespaces.
-namespace std {
-
-template <class C>
-struct hash<std::basic_string<C> > : private hash<const C*> {
- size_t operator()(const std::basic_string<C> & s) const {
- return hash<const C*>::operator()(s.c_str());
- }
-};
-
+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);
+ return output;
}
-#if FOLLY_HAVE_DEPRECATED_ASSOC
-#if defined(_GLIBCXX_SYMVER) && !defined(__BIONIC__)
-namespace __gnu_cxx {
+/**
+ * Returns a subpiece with all whitespace removed from the front of @sp.
+ * Whitespace means any of [' ', '\n', '\r', '\t'].
+ */
+StringPiece skipWhitespace(StringPiece sp);
-template <class C>
-struct hash<std::basic_string<C> > : private hash<const C*> {
- size_t operator()(const std::basic_string<C> & s) const {
- return hash<const C*>::operator()(s.c_str());
- }
-};
+/**
+ * Fast, in-place lowercasing of ASCII alphabetic characters in strings.
+ * Leaves all other characters unchanged, including those with the 0x80
+ * bit set.
+ * @param str String to convert
+ * @param len Length of str, in bytes
+ */
+void toLowerAscii(char* str, size_t length);
+inline void toLowerAscii(MutableStringPiece str) {
+ toLowerAscii(str.begin(), str.size());
}
-#endif
-#endif
+
+} // namespace folly
// Hook into boost's type traits
namespace boost {
};
} // namespace boost
-#include "folly/String-inl.h"
+#include <folly/String-inl.h>
#endif