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Raptor RDF Syntax Parsing and Serializing Library Manual |  |
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Synopsis
typedef raptor_unichar; int raptor_unicode_char_to_utf8 (raptor_unichar c, unsigned char *output); int raptor_utf8_to_unicode_char (raptor_unichar *output, unsigned char *input, int length); int raptor_unicode_is_xml11_namestartchar (raptor_unichar c); int raptor_unicode_is_xml10_namestartchar (raptor_unichar c); int raptor_unicode_is_xml11_namechar (raptor_unichar c); int raptor_unicode_is_xml10_namechar (raptor_unichar c); int raptor_utf8_check (unsigned char *string, size_t length);
Description
Functions to support converting to and from Unicode written in UTF-8 which is the native internal string format of all the redland libraries. Includes checking for Unicode names using either the XML 1.0 or XML 1.1 rules.
Details
raptor_unicode_char_to_utf8 ()
int raptor_unicode_char_to_utf8 (raptor_unichar c, unsigned char *output);
Convert a Unicode character to UTF-8 encoding.
Based on librdf_unicode_char_to_utf8() with no need to calculate
length since the encoded character is always copied into a buffer
with sufficient size.
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Unicode character |
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UTF-8 string buffer or NULL |
Returns : |
bytes encoded to output buffer or <0 on failure |
raptor_utf8_to_unicode_char ()
int raptor_utf8_to_unicode_char (raptor_unichar *output, unsigned char *input, int length);
Convert an UTF-8 encoded buffer to a Unicode character.
If output is NULL, then will calculate the number of bytes that will be used from the input buffer and not perform the conversion.
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Pointer to the Unicode character or NULL |
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UTF-8 string buffer |
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buffer size |
Returns : |
bytes used from input buffer or <0 on failure: -1 input buffer too short or length error, -2 overlong UTF-8 sequence, -3 illegal code positions, -4 code out of range U+0000 to U+10FFFF. In cases -2, -3 and -4 the coded character is stored in the output. |
raptor_unicode_is_xml11_namestartchar ()
int raptor_unicode_is_xml11_namestartchar (raptor_unichar c);
Check if Unicode character is legal to start an XML 1.1 Name
Namespaces in XML 1.1 REC 2004-02-04 http://www.w3.org/TR/2004/REC-xml11-20040204/NT-NameStartChar updating Extensible Markup Language (XML) 1.1 REC 2004-02-04 http://www.w3.org/TR/2004/REC-xml11-20040204/ sec 2.3, [4a] excluding the ':'
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Unicode character to check |
Returns : |
non-0 if legal |
raptor_unicode_is_xml10_namestartchar ()
int raptor_unicode_is_xml10_namestartchar (raptor_unichar c);
Check if Unicode character is legal to start an XML 1.0 Name
Namespaces in XML REC 1999-01-14 http://www.w3.org/TR/1999/REC-xml-names-19990114/NT-NCName updating Extensible Markup Language (XML) 1.0 (Third Edition) REC 2004-02-04 http://www.w3.org/TR/2004/REC-xml-20040204/ excluding the ':'
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Unicode character to check |
Returns : |
non-0 if legal |
raptor_unicode_is_xml11_namechar ()
int raptor_unicode_is_xml11_namechar (raptor_unichar c);
Check if a Unicode codepoint is a legal to continue an XML 1.1 Name
Namespaces in XML 1.1 REC 2004-02-04 http://www.w3.org/TR/2004/REC-xml11-20040204/ updating Extensible Markup Language (XML) 1.1 REC 2004-02-04 http://www.w3.org/TR/2004/REC-xml11-20040204/ sec 2.3, [4a] excluding the ':'
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Unicode character |
Returns : |
non-0 if legal |
raptor_unicode_is_xml10_namechar ()
int raptor_unicode_is_xml10_namechar (raptor_unichar c);
Check if a Unicode codepoint is a legal to continue an XML 1.0 Name
Namespaces in XML REC 1999-01-14 http://www.w3.org/TR/1999/REC-xml-names-19990114/NT-NCNameChar updating Extensible Markup Language (XML) 1.0 (Third Edition) REC 2004-02-04 http://www.w3.org/TR/2004/REC-xml-20040204/ excluding the ':'
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Unicode character |
Returns : |
non-0 if legal |