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Redland RDF Library Manual | ![]() |
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Top | Description |
typedef librdf_unichar; int librdf_unicode_char_to_utf8 (librdf_unichar c
,unsigned char *output
,int length
); int librdf_utf8_to_unicode_char (librdf_unichar *output
,const unsigned char *input
,int length
); unsigned char * librdf_utf8_to_latin1 (const unsigned char *input
,int length
,int *output_length
); unsigned char * librdf_latin1_to_utf8 (const unsigned char *input
,int length
,int *output_length
); void librdf_utf8_print (const unsigned char *input
,int length
,FILE *stream
);
Utility functions to convert between UTF-8, full Unicode and Latin-1. Redland uses UTF-8 for all string formats (except where noted) but these may need to be converted to other Unicode encodings or downgraded with loss to Latin-1.
int librdf_unicode_char_to_utf8 (librdf_unichar c
,unsigned char *output
,int length
);
Convert a Unicode character to UTF-8 encoding.
deprecated
: Use raptor_unicode_utf8_string_put_char()
If buffer is NULL, then will calculate the length rather than perform it. This can be used by the caller to allocate space and then re-call this function with the new buffer.
|
Unicode character |
|
UTF-8 string buffer or NULL |
|
buffer size |
Returns : |
bytes written to output buffer or <0 on failure |
int librdf_utf8_to_unicode_char (librdf_unichar *output
,const unsigned char *input
,int length
);
Convert an UTF-8 encoded buffer to a Unicode character.
deprecated
: Use raptor_unicode_utf8_string_get_char()
noting that the arg order has changed to input, length, output.
If output
is NULL, then will calculate the number of bytes that
will be used from the input buffer and not perform the conversion.
|
Pointer to the Unicode character or NULL |
|
UTF-8 string buffer |
|
buffer size |
Returns : |
bytes used from input buffer or <0 on failure |
unsigned char * librdf_utf8_to_latin1 (const unsigned char *input
,int length
,int *output_length
);
Convert a UTF-8 string to ISO Latin-1.
Converts the given UTF-8 string to the ISO Latin-1 subset of Unicode (characters 0x00-0xff), discarding any out of range characters.
If the output_length
pointer is not NULL, the returned string
length will be stored there.
|
UTF-8 string buffer |
|
buffer size |
|
Pointer to variable to store resulting string length or NULL |
Returns : |
pointer to new ISO Latin-1 string or NULL on failure |
unsigned char * librdf_latin1_to_utf8 (const unsigned char *input
,int length
,int *output_length
);
Convert an ISO Latin-1 encoded string to UTF-8.
Converts the given ISO Latin-1 string to an UTF-8 encoded string representing the same content. This is lossless.
If the output_length pointer is not NULL, the returned string length will be stored there.
|
ISO Latin-1 string buffer |
|
buffer size |
|
Pointer to variable to store resulting string length or NULL |
Returns : |
pointer to new UTF-8 string or NULL on failure |
void librdf_utf8_print (const unsigned char *input
,int length
,FILE *stream
);
Print a UTF-8 string to a stream.
Pretty prints the UTF-8 string in a pseudo-C character
format like \uhex digits when the characters fail
the isprint()
test.
|
UTF-8 string buffer |
|
buffer size |
|
FILE* stream |