#define FOLLY_BASE_STRING_H_
#include <exception>
+#include <stdarg.h>
#include <string>
#include <boost/type_traits.hpp>
* 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);
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 fixed number of string pieces and/or numeric types
* by delimiter. Any numeric type that folly::to<> can convert to from a
* string piece is supported as a target. Returns 'true' if the fields were
- * all successfully populated.
+ * all successfully populated. Returns 'false' if there were too few fields
+ * in the input, or too many fields if exact=true. Casting exceptions will
+ * not be caught.
*
* Examples:
*
* Returns a subpiece with all whitespace removed from the front of @sp.
* Whitespace means any of [' ', '\n', '\r', '\t'].
*/
-StringPiece skipWhitespace(StringPiece sp);
+StringPiece ltrimWhitespace(StringPiece sp);
+
+/**
+ * Returns a subpiece with all whitespace removed from the back of @sp.
+ * Whitespace means any of [' ', '\n', '\r', '\t'].
+ */
+StringPiece rtrimWhitespace(StringPiece sp);
+
+/**
+ * Returns a subpiece with all whitespace removed from the back and front of @sp.
+ * Whitespace means any of [' ', '\n', '\r', '\t'].
+ */
+inline StringPiece trimWhitespace(StringPiece sp) {
+ return ltrimWhitespace(rtrimWhitespace(sp));
+}
+
+/**
+ * Returns a subpiece with all whitespace removed from the front of @sp.
+ * Whitespace means any of [' ', '\n', '\r', '\t'].
+ * DEPRECATED: @see ltrimWhitespace @see rtrimWhitespace
+ */
+inline StringPiece skipWhitespace(StringPiece sp) {
+ return ltrimWhitespace(sp);
+}
/**
* Fast, in-place lowercasing of ASCII alphabetic characters in strings.