/* * Summary: interface for the encoding conversion functions * Description: interface for the encoding conversion functions needed for *              XML basic encoding and iconv() support. * * Related specs are * rfc2044        (UTF-8 and UTF-16) F. Yergeau Alis Technologies * [ISO-10646]    UTF-8 and UTF-16 in Annexes * [ISO-8859-1]   ISO Latin-1 characters codes. * [UNICODE]      The Unicode Consortium, "The Unicode Standard -- *                Worldwide Character Encoding -- Version 1.0", Addison- *                Wesley, Volume 1, 1991, Volume 2, 1992.  UTF-8 is *                described in Unicode Technical Report #4. * [US-ASCII]     Coded Character Set--7-bit American Standard Code for *                Information Interchange, ANSI X3.4-1986. * * Copy: 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> #ifdef LIBXML_ICONV_ENABLED#include <iconv.h>#endif#ifdef LIBXML_ICU_ENABLED#include <unicode/ucnv.h>#endif#ifdef __cplusplusextern "C" {#endif /* * xmlCharEncoding: * * Predefined values for some standard encodings. * Libxml does not do beforehand translation on UTF8 and ISOLatinX. * It also supports ASCII, ISO-8859-1, and UTF16 (LE and BE) by default. * * Anything else would have to be translated to UTF8 before being * given to the parser itself. The BOM for UTF16 and the encoding * declaration are looked at and a converter is looked for at that * point. If not found the parser stops here as asked by the XML REC. A * converter can be registered by the user using xmlRegisterCharEncodingHandler * but the current form doesn't allow stateful transcoding (a serious * problem agreed !). If iconv has been found it will be used * automatically and allow stateful transcoding, the simplest is then * to be sure to enable iconv and to provide iconv libs for the encoding * support needed. * * Note that the generic "UTF-16" is not a predefined value.  Instead, only * the specific UTF-16LE and UTF-16BE are present. */typedef enum {    XML_CHAR_ENCODING_ERROR=   -1, /* No char encoding detected */    XML_CHAR_ENCODING_NONE=	0, /* No char encoding detected */    XML_CHAR_ENCODING_UTF8=	1, /* UTF-8 */    XML_CHAR_ENCODING_UTF16LE=	2, /* UTF-16 little endian */    XML_CHAR_ENCODING_UTF16BE=	3, /* UTF-16 big endian */    XML_CHAR_ENCODING_UCS4LE=	4, /* UCS-4 little endian */    XML_CHAR_ENCODING_UCS4BE=	5, /* UCS-4 big endian */    XML_CHAR_ENCODING_EBCDIC=	6, /* EBCDIC uh! */    XML_CHAR_ENCODING_UCS4_2143=7, /* UCS-4 unusual ordering */    XML_CHAR_ENCODING_UCS4_3412=8, /* UCS-4 unusual ordering */    XML_CHAR_ENCODING_UCS2=	9, /* UCS-2 */    XML_CHAR_ENCODING_8859_1=	10,/* ISO-8859-1 ISO Latin 1 */    XML_CHAR_ENCODING_8859_2=	11,/* ISO-8859-2 ISO Latin 2 */    XML_CHAR_ENCODING_8859_3=	12,/* ISO-8859-3 */    XML_CHAR_ENCODING_8859_4=	13,/* ISO-8859-4 */    XML_CHAR_ENCODING_8859_5=	14,/* ISO-8859-5 */    XML_CHAR_ENCODING_8859_6=	15,/* ISO-8859-6 */    XML_CHAR_ENCODING_8859_7=	16,/* ISO-8859-7 */    XML_CHAR_ENCODING_8859_8=	17,/* ISO-8859-8 */    XML_CHAR_ENCODING_8859_9=	18,/* ISO-8859-9 */    XML_CHAR_ENCODING_2022_JP=  19,/* ISO-2022-JP */    XML_CHAR_ENCODING_SHIFT_JIS=20,/* Shift_JIS */    XML_CHAR_ENCODING_EUC_JP=   21,/* EUC-JP */    XML_CHAR_ENCODING_ASCII=    22 /* pure ASCII */} xmlCharEncoding; /** * xmlCharEncodingInputFunc: * @out:  a pointer to an array of bytes to store the UTF-8 result * @outlen:  the length of @out * @in:  a pointer to an array of chars in the original encoding * @inlen:  the length of @in * * Take a block of chars in the original encoding and try to convert * it to an UTF-8 block of chars out. * * Returns the number of bytes written, -1 if lack of space, or -2 *     if the transcoding failed. * The value of @inlen after return is the number of octets consumed *     if the return value is positive, else unpredictiable. * The value of @outlen after return is the number of octets consumed. */typedef int (* xmlCharEncodingInputFunc)(unsigned char *out, int *outlen,                                         const unsigned char *in, int *inlen);  /** * xmlCharEncodingOutputFunc: * @out:  a pointer to an array of bytes to store the result * @outlen:  the length of @out * @in:  a pointer to an array of UTF-8 chars * @inlen:  the length of @in * * Take a block of UTF-8 chars in and try to convert it to another * encoding. * Note: a first call designed to produce heading info is called with * in = NULL. If stateful this should also initialize the encoder state. * * Returns the number of bytes written, -1 if lack of space, or -2 *     if the transcoding failed. * The value of @inlen after return is the number of octets consumed *     if the return value is positive, else unpredictiable. * The value of @outlen after return is the number of octets produced. */typedef int (* xmlCharEncodingOutputFunc)(unsigned char *out, int *outlen,                                          const unsigned char *in, int *inlen);  /* * Block defining the handlers for non UTF-8 encodings. * If iconv is supported, there are two extra fields. */#ifdef LIBXML_ICU_ENABLEDstruct _uconv_t {  UConverter *uconv; /* for conversion between an encoding and UTF-16 */  UConverter *utf8; /* for conversion between UTF-8 and UTF-16 */};typedef struct _uconv_t uconv_t;#endif typedef struct _xmlCharEncodingHandler xmlCharEncodingHandler;typedef xmlCharEncodingHandler *xmlCharEncodingHandlerPtr;struct _xmlCharEncodingHandler {    char                       *name;    xmlCharEncodingInputFunc   input;    xmlCharEncodingOutputFunc  output;#ifdef LIBXML_ICONV_ENABLED    iconv_t                    iconv_in;    iconv_t                    iconv_out;#endif /* LIBXML_ICONV_ENABLED */#ifdef LIBXML_ICU_ENABLED    uconv_t                    *uconv_in;    uconv_t                    *uconv_out;#endif /* LIBXML_ICU_ENABLED */}; #ifdef __cplusplus}#endif#include <libxml/tree.h>#ifdef __cplusplusextern "C" {#endif /* * Interfaces for encoding handlers. */XMLPUBFUN void XMLCALL	xmlInitCharEncodingHandlers	(void);XMLPUBFUN void XMLCALL	xmlCleanupCharEncodingHandlers	(void);XMLPUBFUN void XMLCALL	xmlRegisterCharEncodingHandler	(xmlCharEncodingHandlerPtr handler);XMLPUBFUN xmlCharEncodingHandlerPtr XMLCALL	xmlGetCharEncodingHandler	(xmlCharEncoding enc);XMLPUBFUN xmlCharEncodingHandlerPtr XMLCALL	xmlFindCharEncodingHandler	(const char *name);XMLPUBFUN xmlCharEncodingHandlerPtr XMLCALL	xmlNewCharEncodingHandler	(const char *name,					 xmlCharEncodingInputFunc input,					 xmlCharEncodingOutputFunc output); /* * Interfaces for encoding names and aliases. */XMLPUBFUN int XMLCALL	xmlAddEncodingAlias		(const char *name,					 const char *alias);XMLPUBFUN int XMLCALL	xmlDelEncodingAlias		(const char *alias);XMLPUBFUN const char * XMLCALL	xmlGetEncodingAlias		(const char *alias);XMLPUBFUN void XMLCALL	xmlCleanupEncodingAliases	(void);XMLPUBFUN xmlCharEncoding XMLCALL	xmlParseCharEncoding		(const char *name);XMLPUBFUN const char * XMLCALL	xmlGetCharEncodingName		(xmlCharEncoding enc); /* * Interfaces directly used by the parsers. */XMLPUBFUN xmlCharEncoding XMLCALL	xmlDetectCharEncoding		(const unsigned char *in,					 int len); XMLPUBFUN int XMLCALL	xmlCharEncOutFunc		(xmlCharEncodingHandler *handler,					 xmlBufferPtr out,					 xmlBufferPtr in); XMLPUBFUN int XMLCALL	xmlCharEncInFunc		(xmlCharEncodingHandler *handler,					 xmlBufferPtr out,					 xmlBufferPtr in);XMLPUBFUN int XMLCALL	xmlCharEncFirstLine		(xmlCharEncodingHandler *handler,					 xmlBufferPtr out,					 xmlBufferPtr in);XMLPUBFUN int XMLCALL	xmlCharEncCloseFunc		(xmlCharEncodingHandler *handler); /* * Export a few useful functions */#ifdef LIBXML_OUTPUT_ENABLEDXMLPUBFUN int XMLCALL	UTF8Toisolat1			(unsigned char *out,					 int *outlen,					 const unsigned char *in,					 int *inlen);#endif /* LIBXML_OUTPUT_ENABLED */XMLPUBFUN int XMLCALL	isolat1ToUTF8			(unsigned char *out,					 int *outlen,					 const unsigned char *in,					 int *inlen);#ifdef __cplusplus}#endif #endif /* __XML_CHAR_ENCODING_H__ */