encoding.h
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- /*
- * 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 __cplusplus
- extern "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.
- */
- 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 __cplusplus
- }
- #endif
- #include "libxml/tree.h"
- #ifdef __cplusplus
- extern "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_ENABLED
- XMLPUBFUN 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__ */