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VTK
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String class that stores Unicode text. More...
#include <vtkUnicodeString.h>
String class that stores Unicode text.
vtkUnicodeString provides storage for Unicode text. Conceptually, it acts as a container for a sequence of Unicode characters, providing a public interface similar to basic_string<>. For character-oriented operations, this means reading / writing 32-bit UTF-32 / UCS-4 characters. Internally, characters may be stored using variable-length encodings for efficiency. Explicit conversions to-and-from other encodings are provided, and implicit conversions are deliberately avoided, to avoid confusion.
Note that, because vtkUnicodeString uses variable-length encodings for storage, character-oriented operations will generally provide O(N) access instead of O(1).
The current implementation stores the sequence with UTF-8 encoding, but this choice is subject to change and might become a compile-time or run-time option.
Definition at line 71 of file vtkUnicodeString.h.
Definition at line 74 of file vtkUnicodeString.h.
| typedef std::string::size_type vtkUnicodeString::size_type |
Definition at line 75 of file vtkUnicodeString.h.
Constructs an empty string.
| vtkUnicodeString::vtkUnicodeString | ( | const vtkUnicodeString & | ) |
Makes a deep-copy of another sequence.
| vtkUnicodeString::vtkUnicodeString | ( | size_type | count, |
| value_type | character | ||
| ) |
Constructs a sequence of repeated characters. Note: throws an exception if the character isn't a valid Unicode code point.
| vtkUnicodeString::vtkUnicodeString | ( | const_iterator | begin, |
| const_iterator | end | ||
| ) |
Constructs a string from a sequence of Unicode characters.
| static bool vtkUnicodeString::is_utf8 | ( | const char * | ) | [static] |
Tests a sequence of bytes, returning true iff they are a valid UTF-8 sequence.
| static bool vtkUnicodeString::is_utf8 | ( | const std::string & | ) | [static] |
Tests a sequence of bytes, returning true iff they are a valid UTF-8 sequence.
| static vtkUnicodeString vtkUnicodeString::from_utf8 | ( | const char * | ) | [static] |
Constructs a string from a null-terminated sequence of UTF-8 encoded characters.
| static vtkUnicodeString vtkUnicodeString::from_utf8 | ( | const char * | begin, |
| const char * | end | ||
| ) | [static] |
Constructs a string from a null-terminated sequence of UTF-8 encoded characters.
| static vtkUnicodeString vtkUnicodeString::from_utf8 | ( | const std::string & | ) | [static] |
Constructs a string from a null-terminated sequence of UTF-8 encoded characters.
| static vtkUnicodeString vtkUnicodeString::from_utf16 | ( | const vtkTypeUInt16 * | ) | [static] |
Constructs a string from a null-terminated sequence of UTF-16 encoded characters.
| vtkUnicodeString& vtkUnicodeString::operator= | ( | const vtkUnicodeString & | ) |
Replaces the current sequence with a deep copy of another.
| const_iterator vtkUnicodeString::begin | ( | ) | const |
Returns a forward iterator that points at the first element of the sequence (or just beyond the end of an empty sequence).
| const_iterator vtkUnicodeString::end | ( | ) | const |
Returns a forward iterator that points just beyond the end of the sequence.
| value_type vtkUnicodeString::at | ( | size_type | offset | ) | const |
Returns the Unicode character at the given character offset within the sequence, or throws std::out_of_range if the offset is invalid.
| value_type vtkUnicodeString::operator[] | ( | size_type | offset | ) | const |
Returns the Unicode character at the given character offset within the sequence. Behavior is undefined if the position is invalid.
| const char* vtkUnicodeString::utf8_str | ( | ) | const |
Returns the sequence as a null-terminated sequence of UTF-8 encoded characters.
| void vtkUnicodeString::utf8_str | ( | std::string & | result | ) | const |
Inserts the sequence into the supplied storage as a collection of UTF-8 encoded characters.
| std::vector<vtkTypeUInt16> vtkUnicodeString::utf16_str | ( | ) | const |
Returns the sequence as a collection of UTF-16 encoded characters.
| void vtkUnicodeString::utf16_str | ( | std::vector< vtkTypeUInt16 > & | result | ) | const |
Inserts the sequence into the supplied storage as a collection of UTF-16 encoded characters
| size_type vtkUnicodeString::byte_count | ( | ) | const |
Returns the number of bytes (not characters) in the sequence.
| size_type vtkUnicodeString::character_count | ( | ) | const |
Returns the number of characters (not bytes) in the sequence.
| bool vtkUnicodeString::empty | ( | ) | const |
Returns true if the string contains an empty sequence.
| vtkUnicodeString& vtkUnicodeString::operator+= | ( | value_type | ) |
Append a Unicode character to the end of the sequence.
| vtkUnicodeString& vtkUnicodeString::operator+= | ( | const vtkUnicodeString & | rhs | ) |
Append a Unicode sequence to the end of the current sequence.
| void vtkUnicodeString::push_back | ( | value_type | ) |
Append a Unicode character to the end of the sequence.
| void vtkUnicodeString::append | ( | const vtkUnicodeString & | value | ) |
Append Unicode to the current sequence.
| void vtkUnicodeString::append | ( | size_type | count, |
| value_type | character | ||
| ) |
Append Unicode to the current sequence.
| void vtkUnicodeString::append | ( | const_iterator | begin, |
| const_iterator | end | ||
| ) |
Append Unicode to the current sequence.
| void vtkUnicodeString::assign | ( | const vtkUnicodeString & | value | ) |
Replace the current sequence with another.
| void vtkUnicodeString::assign | ( | size_type | count, |
| value_type | character | ||
| ) |
Replace the current sequence with another.
| void vtkUnicodeString::assign | ( | const_iterator | begin, |
| const_iterator | end | ||
| ) |
Replace the current sequence with another.
| void vtkUnicodeString::clear | ( | ) |
Resets the string to an empty sequence
| vtkUnicodeString vtkUnicodeString::fold_case | ( | ) | const |
Returns a copy of the current sequence, modified so that differences in case are eliminated. Thus, you can run fold_case() on two strings and then comparse them to obtain a case-insensitive comparison. Note that the string returned by fold_case() may be larger than the original source sequence, See http://www.unicode.org/Public/UNIDATA/CaseFolding.txt for details.
| int vtkUnicodeString::compare | ( | const vtkUnicodeString & | ) | const |
Returns a negative value if the sequence compares less-than the operand sequence, zero if the two sequences compare equal, or a positive value otherwise. Note that the definition of "less-than" is undefined, so you should use some other method if you wish to establish a specific ordering (such as alphabetical).
| vtkUnicodeString vtkUnicodeString::substr | ( | size_type | offset = 0, |
| size_type | count = npos |
||
| ) | const |
Returns a subset of the current sequence that up-to 'count' characters in length, starting at character 'offset'.
| void vtkUnicodeString::swap | ( | vtkUnicodeString & | ) |
Swap the sequences stored by two strings.
const size_type vtkUnicodeString::npos [static] |
The largest representable value of size_type, used as a special-code.
Definition at line 169 of file vtkUnicodeString.h.
1.8.0