22 #ifndef __STRINGPIECE_H__ 23 #define __STRINGPIECE_H__ 32 #if U_SHOW_CPLUSPLUS_API 35 #include <type_traits> 78 #ifndef U_HIDE_DRAFT_API 79 #if defined(__cpp_char8_t) || defined(U_IN_DOXYGEN) 94 #endif // U_HIDE_DRAFT_API 101 : ptr_(str.data()), length_(static_cast<int32_t>(str.size())) { }
102 #ifndef U_HIDE_DRAFT_API 103 #if defined(__cpp_lib_char8_t) || defined(U_IN_DOXYGEN) 109 : ptr_(reinterpret_cast<const char*>(str.data())),
110 length_(static_cast<int32_t>(str.size())) { }
112 #endif // U_HIDE_DRAFT_API 114 #ifndef U_HIDE_DRAFT_API 137 template <
typename T,
138 typename =
typename std::enable_if<
139 (std::is_same<decltype(T().data()),
const char*>::value
140 #if defined(__cpp_char8_t) 141 || std::is_same<decltype(T().data()),
const char8_t*>::value
144 std::is_same<decltype(T().size()),
size_t>::value>::type>
146 : ptr_(reinterpret_cast<const char*>(str.data())),
147 length_(static_cast<int32_t>(str.size())) {}
148 #endif // U_HIDE_DRAFT_API 156 StringPiece(
const char* offset, int32_t len) : ptr_(offset), length_(len) { }
157 #ifndef U_HIDE_DRAFT_API 158 #if defined(__cpp_char8_t) || defined(U_IN_DOXYGEN) 166 StringPiece(reinterpret_cast<const char*>(str), len) {}
168 #endif // U_HIDE_DRAFT_API 197 const char*
data()
const {
return ptr_; }
203 int32_t
size()
const {
return length_; }
209 int32_t
length()
const {
return length_; }
221 void clear() { ptr_ =
nullptr; length_ = 0; }
229 void set(
const char* xdata, int32_t len) { ptr_ = xdata; length_ = len; }
236 void set(
const char* str);
238 #ifndef U_HIDE_DRAFT_API 239 #if defined(__cpp_char8_t) || defined(U_IN_DOXYGEN) 246 inline void set(
const char8_t* xdata, int32_t len) {
247 set(
reinterpret_cast<const char*
>(xdata), len);
255 inline void set(
const char8_t* str) {
256 set(
reinterpret_cast<const char*
>(str));
259 #endif // U_HIDE_DRAFT_API 291 #ifndef U_HIDE_DRAFT_API 309 #endif // U_HIDE_DRAFT_API 355 #endif // __STRINGPIECE_H__ StringPiece(const char *offset, int32_t len)
Constructs from a const char * pointer and a specified length.
void remove_prefix(int32_t n)
Removes the first n string units.
int32_t size() const
Returns the string length.
U_EXPORT UBool operator==(const StringPiece &x, const StringPiece &y)
Global operator == for StringPiece.
UBool empty() const
Returns whether the string is empty.
StringPiece(const char8_t *str)
Constructs from a NUL-terminated const char8_t * pointer.
StringPiece(std::nullptr_t p)
Constructs an empty StringPiece.
StringPiece()
Default constructor, creates an empty StringPiece.
StringPiece(const std::string &str)
Constructs from a std::string.
StringPiece(T str)
Constructs from some other implementation of a string piece class, from any C++ record type that has ...
UBool operator!=(const StringPiece &x, const StringPiece &y)
Global operator != for StringPiece.
C++ API: Central ICU header for including the C++ standard <string> header and for related definition...
int32_t length() const
Returns the string length.
C++ API: Common ICU base class UObject.
StringPiece substr(int32_t pos, int32_t len=npos) const
Returns a substring of this StringPiece.
const char * data() const
Returns the string pointer.
void clear()
Sets to an empty string.
Basic definitions for ICU, for both C and C++ APIs.
#define U_COMMON_API
Set to export library symbols from inside the common library, and to import them from outside...
StringPiece(const char8_t *str, int32_t len)
Constructs from a const char8_t * pointer and a specified length.
A string-like object that points to a sized piece of memory.
void remove_suffix(int32_t n)
Removes the last n string units.
UMemory is the common ICU base class.
static const int32_t npos
Maximum integer, used as a default value for substring methods.
StringPiece(const std::u8string &str)
Constructs from a std::u8string.
int8_t UBool
The ICU boolean type.