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/**
* @file
*
* @brief Character encoding conversion functions
*
* @copyright See Copyright for the status of this software.
*
* @author Daniel Veillard
*/
#ifndef __XML_CHAR_ENCODING_H__
#define __XML_CHAR_ENCODING_H__
#include <libxml/xmlversion.h>
#include <libxml/xmlerror.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Backward compatibility
*/
/** @cond ignore */
#define UTF8Toisolat1 xmlUTF8ToIsolat1
#define isolat1ToUTF8 xmlIsolat1ToUTF8
/** @endcond */
/**
* Encoding conversion errors
*/
typedef enum {
/** Success */
XML_ENC_ERR_SUCCESS = 0,
/** Internal or unclassified error */
XML_ENC_ERR_INTERNAL = -1,
/** Invalid or untranslatable input sequence */
XML_ENC_ERR_INPUT = -2,
/** Not enough space in output buffer */
XML_ENC_ERR_SPACE = -3,
/** Out-of-memory error */
XML_ENC_ERR_MEMORY = -4
} xmlCharEncError;
/**
* Predefined values for some standard encodings.
*/
typedef enum {
/** No char encoding detected */
XML_CHAR_ENCODING_ERROR= -1,
/** No char encoding detected */
XML_CHAR_ENCODING_NONE= 0,
/** UTF-8 */
XML_CHAR_ENCODING_UTF8= 1,
/** UTF-16 little endian */
XML_CHAR_ENCODING_UTF16LE= 2,
/** UTF-16 big endian */
XML_CHAR_ENCODING_UTF16BE= 3,
/** UCS-4 little endian */
XML_CHAR_ENCODING_UCS4LE= 4,
/** UCS-4 big endian */
XML_CHAR_ENCODING_UCS4BE= 5,
/** EBCDIC uh! */
XML_CHAR_ENCODING_EBCDIC= 6,
/** UCS-4 unusual ordering */
XML_CHAR_ENCODING_UCS4_2143=7,
/** UCS-4 unusual ordering */
XML_CHAR_ENCODING_UCS4_3412=8,
/** UCS-2 */
XML_CHAR_ENCODING_UCS2= 9,
/** ISO-8859-1 ISO Latin 1 */
XML_CHAR_ENCODING_8859_1= 10,
/** ISO-8859-2 ISO Latin 2 */
XML_CHAR_ENCODING_8859_2= 11,
/** ISO-8859-3 */
XML_CHAR_ENCODING_8859_3= 12,
/** ISO-8859-4 */
XML_CHAR_ENCODING_8859_4= 13,
/** ISO-8859-5 */
XML_CHAR_ENCODING_8859_5= 14,
/** ISO-8859-6 */
XML_CHAR_ENCODING_8859_6= 15,
/** ISO-8859-7 */
XML_CHAR_ENCODING_8859_7= 16,
/** ISO-8859-8 */
XML_CHAR_ENCODING_8859_8= 17,
/** ISO-8859-9 */
XML_CHAR_ENCODING_8859_9= 18,
/** ISO-2022-JP */
XML_CHAR_ENCODING_2022_JP= 19,
/** Shift_JIS */
XML_CHAR_ENCODING_SHIFT_JIS=20,
/** EUC-JP */
XML_CHAR_ENCODING_EUC_JP= 21,
/** pure ASCII */
XML_CHAR_ENCODING_ASCII= 22,
/** UTF-16 native, available since 2.14 */
XML_CHAR_ENCODING_UTF16= 23,
/** HTML (output only), available since 2.14 */
XML_CHAR_ENCODING_HTML= 24,
/** ISO-8859-10, available since 2.14 */
XML_CHAR_ENCODING_8859_10= 25,
/** ISO-8859-11, available since 2.14 */
XML_CHAR_ENCODING_8859_11= 26,
/** ISO-8859-13, available since 2.14 */
XML_CHAR_ENCODING_8859_13= 27,
/** ISO-8859-14, available since 2.14 */
XML_CHAR_ENCODING_8859_14= 28,
/** ISO-8859-15, available since 2.14 */
XML_CHAR_ENCODING_8859_15= 29,
/** ISO-8859-16, available since 2.14 */
XML_CHAR_ENCODING_8859_16= 30,
/** windows-1252, available since 2.15 */
XML_CHAR_ENCODING_WINDOWS_1252 = 31
} xmlCharEncoding;
/**
* Encoding conversion flags
*/
typedef enum {
/** Create converter for input (conversion to UTF-8) */
XML_ENC_INPUT = (1 << 0),
/** Create converter for output (conversion from UTF-8) */
XML_ENC_OUTPUT = (1 << 1),
/** Use HTML5 mappings */
XML_ENC_HTML = (1 << 2)
} xmlCharEncFlags;
/**
* Convert characters to UTF-8.
*
* On success, the value of `inlen` after return is the number of
* bytes consumed and `outlen` is the number of bytes produced.
*
* @param out a pointer to an array of bytes to store the UTF-8 result
* @param outlen the length of `out`
* @param in a pointer to an array of chars in the original encoding
* @param inlen the length of `in`
* @returns the number of bytes written or an xmlCharEncError code.
*/
typedef int (*xmlCharEncodingInputFunc)(unsigned char *out, int *outlen,
const unsigned char *in, int *inlen);
/**
* Convert characters from UTF-8.
*
* On success, the value of `inlen` after return is the number of
* bytes consumed and `outlen` is the number of bytes produced.
*
* @param out a pointer to an array of bytes to store the result
* @param outlen the length of `out`
* @param in a pointer to an array of UTF-8 chars
* @param inlen the length of `in`
* @returns the number of bytes written or an xmlCharEncError code.
*/
typedef int (*xmlCharEncodingOutputFunc)(unsigned char *out, int *outlen,
const unsigned char *in, int *inlen);
/**
* Convert between character encodings.
*
* The value of `inlen` after return is the number of bytes consumed
* and `outlen` is the number of bytes produced.
*
* If the converter can consume partial multi-byte sequences, the
* `flush` flag can be used to detect truncated sequences at EOF.
* Otherwise, the flag can be ignored.
*
* @param vctxt conversion context
* @param out a pointer to an array of bytes to store the result
* @param outlen the length of `out`
* @param in a pointer to an array of input bytes
* @param inlen the length of `in`
* @param flush end of input
* @returns an xmlCharEncError code.
*/
typedef xmlCharEncError
(*xmlCharEncConvFunc)(void *vctxt, unsigned char *out, int *outlen,
const unsigned char *in, int *inlen, int flush);
/**
* Free a conversion context.
*
* @param vctxt conversion context
*/
typedef void
(*xmlCharEncConvCtxtDtor)(void *vctxt);
/** Character encoding converter */
typedef struct _xmlCharEncodingHandler xmlCharEncodingHandler;
typedef xmlCharEncodingHandler *xmlCharEncodingHandlerPtr;
/**
* A character encoding conversion handler for non UTF-8 encodings.
*
* This structure will be made private.
*/
struct _xmlCharEncodingHandler {
char *name XML_DEPRECATED_MEMBER;
union {
xmlCharEncConvFunc func;
xmlCharEncodingInputFunc legacyFunc;
} input XML_DEPRECATED_MEMBER;
union {
xmlCharEncConvFunc func;
xmlCharEncodingOutputFunc legacyFunc;
} output XML_DEPRECATED_MEMBER;
void *inputCtxt XML_DEPRECATED_MEMBER;
void *outputCtxt XML_DEPRECATED_MEMBER;
xmlCharEncConvCtxtDtor ctxtDtor XML_DEPRECATED_MEMBER;
int flags XML_DEPRECATED_MEMBER;
};
/**
* If this function returns XML_ERR_OK, it must fill the `out`
* pointer with an encoding handler. The handler can be obtained
* from #xmlCharEncNewCustomHandler.
*
* `flags` can contain XML_ENC_INPUT, XML_ENC_OUTPUT or both.
*
* @param vctxt user data
* @param name encoding name
* @param flags bit mask of flags
* @param out pointer to resulting handler
* @returns an xmlParserErrors code.
*/
typedef xmlParserErrors
(*xmlCharEncConvImpl)(void *vctxt, const char *name, xmlCharEncFlags flags,
xmlCharEncodingHandler **out);
/*
* Interfaces for encoding handlers.
*/
XML_DEPRECATED
XMLPUBFUN void
xmlInitCharEncodingHandlers (void);
XML_DEPRECATED
XMLPUBFUN void
xmlCleanupCharEncodingHandlers (void);
XML_DEPRECATED
XMLPUBFUN void
xmlRegisterCharEncodingHandler (xmlCharEncodingHandler *handler);
XMLPUBFUN xmlParserErrors
xmlLookupCharEncodingHandler (xmlCharEncoding enc,
xmlCharEncodingHandler **out);
XMLPUBFUN xmlParserErrors
xmlOpenCharEncodingHandler (const char *name,
int output,
xmlCharEncodingHandler **out);
XMLPUBFUN xmlParserErrors
xmlCreateCharEncodingHandler (const char *name,
xmlCharEncFlags flags,
xmlCharEncConvImpl impl,
void *implCtxt,
xmlCharEncodingHandler **out);
XMLPUBFUN xmlCharEncodingHandler *
xmlGetCharEncodingHandler (xmlCharEncoding enc);
XMLPUBFUN xmlCharEncodingHandler *
xmlFindCharEncodingHandler (const char *name);
XML_DEPRECATED
XMLPUBFUN xmlCharEncodingHandler *
xmlNewCharEncodingHandler (const char *name,
xmlCharEncodingInputFunc input,
xmlCharEncodingOutputFunc output);
XMLPUBFUN xmlParserErrors
xmlCharEncNewCustomHandler (const char *name,
xmlCharEncConvFunc input,
xmlCharEncConvFunc output,
xmlCharEncConvCtxtDtor ctxtDtor,
void *inputCtxt,
void *outputCtxt,
xmlCharEncodingHandler **out);
/*
* Interfaces for encoding names and aliases.
*/
XML_DEPRECATED
XMLPUBFUN int
xmlAddEncodingAlias (const char *name,
const char *alias);
XML_DEPRECATED
XMLPUBFUN int
xmlDelEncodingAlias (const char *alias);
XML_DEPRECATED
XMLPUBFUN const char *
xmlGetEncodingAlias (const char *alias);
XML_DEPRECATED
XMLPUBFUN void
xmlCleanupEncodingAliases (void);
XMLPUBFUN xmlCharEncoding
xmlParseCharEncoding (const char *name);
XMLPUBFUN const char *
xmlGetCharEncodingName (xmlCharEncoding enc);
/*
* Interfaces directly used by the parsers.
*/
XMLPUBFUN xmlCharEncoding
xmlDetectCharEncoding (const unsigned char *in,
int len);
struct _xmlBuffer;
XMLPUBFUN int
xmlCharEncOutFunc (xmlCharEncodingHandler *handler,
struct _xmlBuffer *out,
struct _xmlBuffer *in);
XMLPUBFUN int
xmlCharEncInFunc (xmlCharEncodingHandler *handler,
struct _xmlBuffer *out,
struct _xmlBuffer *in);
XML_DEPRECATED
XMLPUBFUN int
xmlCharEncFirstLine (xmlCharEncodingHandler *handler,
struct _xmlBuffer *out,
struct _xmlBuffer *in);
XMLPUBFUN int
xmlCharEncCloseFunc (xmlCharEncodingHandler *handler);
/*
* Export a few useful functions
*/
#ifdef LIBXML_OUTPUT_ENABLED
XMLPUBFUN int
xmlUTF8ToIsolat1 (unsigned char *out,
int *outlen,
const unsigned char *in,
int *inlen);
#endif /* LIBXML_OUTPUT_ENABLED */
XMLPUBFUN int
xmlIsolat1ToUTF8 (unsigned char *out,
int *outlen,
const unsigned char *in,
int *inlen);
#ifdef __cplusplus
}
#endif
#endif /* __XML_CHAR_ENCODING_H__ */