Enumerations | Functions
Xapian::Unicode Namespace Reference

Functions associated with handling Unicode characters. More...

Enumerations

enum  category {
  UNASSIGNED, UPPERCASE_LETTER, LOWERCASE_LETTER, TITLECASE_LETTER,
  MODIFIER_LETTER, OTHER_LETTER, NON_SPACING_MARK, ENCLOSING_MARK,
  COMBINING_SPACING_MARK, DECIMAL_DIGIT_NUMBER, LETTER_NUMBER, OTHER_NUMBER,
  SPACE_SEPARATOR, LINE_SEPARATOR, PARAGRAPH_SEPARATOR, CONTROL,
  FORMAT, PRIVATE_USE, SURROGATE, CONNECTOR_PUNCTUATION,
  DASH_PUNCTUATION, OPEN_PUNCTUATION, CLOSE_PUNCTUATION, INITIAL_QUOTE_PUNCTUATION,
  FINAL_QUOTE_PUNCTUATION, OTHER_PUNCTUATION, MATH_SYMBOL, CURRENCY_SYMBOL,
  MODIFIER_SYMBOL, OTHER_SYMBOL
}
 Each Unicode character is in exactly one of these categories. More...
 

Functions

unsigned nonascii_to_utf8 (unsigned ch, char *buf)
 Convert a single non-ASCII Unicode character to UTF-8. More...
 
unsigned to_utf8 (unsigned ch, char *buf)
 Convert a single Unicode character to UTF-8. More...
 
void append_utf8 (std::string &s, unsigned ch)
 Append the UTF-8 representation of a single Unicode character to a std::string.
 
category get_category (unsigned ch)
 Return the category which a given Unicode character falls into.
 
bool is_wordchar (unsigned ch)
 Test if a given Unicode character is "word character".
 
bool is_whitespace (unsigned ch)
 Test if a given Unicode character is a whitespace character.
 
bool is_currency (unsigned ch)
 Test if a given Unicode character is a currency symbol.
 
unsigned tolower (unsigned ch)
 Convert a Unicode character to lowercase.
 
unsigned toupper (unsigned ch)
 Convert a Unicode character to uppercase.
 
std::string tolower (const std::string &term)
 Convert a UTF-8 std::string to lowercase.
 
std::string toupper (const std::string &term)
 Convert a UTF-8 std::string to uppercase.
 

Detailed Description

Functions associated with handling Unicode characters.

Enumeration Type Documentation

◆ category

Each Unicode character is in exactly one of these categories.

Function Documentation

◆ nonascii_to_utf8()

unsigned Xapian::Unicode::nonascii_to_utf8 ( unsigned  ch,
char *  buf 
)

Convert a single non-ASCII Unicode character to UTF-8.

This is intended mainly as a helper method for to_utf8().

Parameters
chThe character (which must be > 128) to write to buf.
bufThe buffer to write the character to - it must have space for (at least) 4 bytes.
Returns
The length of the resultant UTF-8 character in bytes.

Referenced by to_utf8().

◆ to_utf8()

unsigned Xapian::Unicode::to_utf8 ( unsigned  ch,
char *  buf 
)
inline

Convert a single Unicode character to UTF-8.

Parameters
chThe character to write to buf.
bufThe buffer to write the character to - it must have space for (at least) 4 bytes.
Returns
The length of the resultant UTF-8 character in bytes.

References nonascii_to_utf8().

Referenced by append_utf8().


Documentation for Xapian (version 1.4.9).
Generated on Sat Nov 3 2018 by Doxygen 1.8.13.