*/
extern "C" {
+
#ifdef HAVE_STDINT_H
# include <stdint.h>
#else
# include <sys/types.h>
# endif
#endif
+
}
#include <string>
namespace otk {
-//! The number of bytes to skip to find the next character in the string
-const char g_utf8_skip[256] = {
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
- 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1
-};
#ifdef HAVE_STDINT_H
typedef uint32_t unichar;
typedef u_int32_t unichar;
#endif
+
+#ifndef DOXYGEN_IGNORE
+
+unichar utf8_get_char(const char *p);
+
+#endif // DOXYGEN_IGNORE
+
//! The iterator type for ustring
/*!
Note this is not a random access iterator but a bidirectional one, since all
write operation would invalidate all other iterators pointing into the same
string.
*/
+
template <class T>
class ustring_Iterator
{
typedef std::bidirectional_iterator_tag iterator_category;
typedef unichar value_type;
typedef std::string::difference_type difference_type;
- typedef value_type reference;
+ //typedef value_type reference;
typedef void pointer;
-
+
inline ustring_Iterator() {}
inline ustring_Iterator(const ustring_Iterator<std::string::iterator>&
other) : _pos(other.base()) {}
- inline value_type operator*() const {
- // get a unicode character from the iterator's position
+ inline value_type operator*() const {
// get an iterator to the internal string
std::string::const_iterator pos = _pos;
-
- unichar result = static_cast<unsigned char>(*pos);
-
- // if its not a 7-bit ascii character
- if((result & 0x80) != 0) {
- // len is the number of bytes this character takes up in the string
- unsigned char len = g_utf8_skip[result];
- result &= 0x7F >> len;
-
- while(--len != 0) {
- result <<= 6;
- result |= static_cast<unsigned char>(*++pos) & 0x3F;
- }
- }
-
- return result;
+ return utf8_get_char(&(*pos));
}
+
inline ustring_Iterator<T> & operator++() {
pos_ += g_utf8_skip[static_cast<unsigned char>(*pos_)];
return *this;
T _pos;
};
-//! This class provides a simple wrapper to a std::string that is encoded as
-//! UTF-8.
+
+//! This class provides a simple wrapper to a std::string that can be encoded
+//! as UTF-8. The ustring::utf() member specifies if the given string is UTF-8
+//! encoded. ustrings default to specifying UTF-8 encoding.
/*!
This class does <b>not</b> handle extended 8-bit ASCII charsets like
ISO-8859-1.
*/
class ustring {
std::string _string;
-
+ bool _utf8;
+
public:
typedef std::string::size_type size_type;
typedef std::string::difference_type difference_type;
typedef unichar value_type;
- typedef unichar & reference;
- typedef const unichar & const_reference;
+ //typedef unichar & reference;
+ //typedef const unichar & const_reference;
- typedef ustring_Iterator<std::string::iterator> iterator;
- typedef ustring_Iterator<std::string::const_iterator> const_iterator;
+ //typedef ustring_Iterator<std::string::iterator> iterator;
+ //typedef ustring_Iterator<std::string::const_iterator> const_iterator;
static const size_type npos = std::string::npos;
- ustring();
+ ustring(bool utf8 = true);
~ustring();
// make new strings
ustring(const ustring& other);
ustring& operator=(const ustring& other);
- ustring(const std::string& src);
- ustring::ustring(const char* src);
+ ustring(const std::string& src, bool utf8 = true);
+ ustring(const char* src, bool utf8 = true);
+
+ // append to the string
+
+ ustring& operator+=(const ustring& src);
+ ustring& operator+=(const char* src);
+ ustring& operator+=(char c);
+
+ // sizes
+
+ ustring::size_type size() const;
+ ustring::size_type bytes() const;
+ ustring::size_type capacity() const;
+ ustring::size_type max_size() const;
+ bool empty() const;
+
+ // erase substrings
+
+ void clear();
+ ustring& erase(size_type i, size_type n=npos);
+
+ // change the string's size
+
+ void resize(size_type n, char c='\0');
+
+ // extract characters
+
+ // No reference return; use replace() to write characters.
+ value_type operator[](size_type i) const;
+
+ // internal data
+
+ const char* data() const;
+ const char* c_str() const;
+ // encoding
+ bool utf8() const;
+ void setUtf8(bool utf8);
};
}