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annotate env/lib/python3.7/site-packages/lxml/includes/libxml/encoding.h @ 4:79f47841a781 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:47:39 -0400
parents 26e78fe6e8c4
children
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1 /*
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2 * Summary: interface for the encoding conversion functions
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3 * Description: interface for the encoding conversion functions needed for
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4 * XML basic encoding and iconv() support.
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5 *
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6 * Related specs are
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7 * rfc2044 (UTF-8 and UTF-16) F. Yergeau Alis Technologies
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8 * [ISO-10646] UTF-8 and UTF-16 in Annexes
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9 * [ISO-8859-1] ISO Latin-1 characters codes.
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10 * [UNICODE] The Unicode Consortium, "The Unicode Standard --
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11 * Worldwide Character Encoding -- Version 1.0", Addison-
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12 * Wesley, Volume 1, 1991, Volume 2, 1992. UTF-8 is
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13 * described in Unicode Technical Report #4.
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14 * [US-ASCII] Coded Character Set--7-bit American Standard Code for
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15 * Information Interchange, ANSI X3.4-1986.
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16 *
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17 * Copy: See Copyright for the status of this software.
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18 *
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19 * Author: Daniel Veillard
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20 */
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21
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22 #ifndef __XML_CHAR_ENCODING_H__
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23 #define __XML_CHAR_ENCODING_H__
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24
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25 #include <libxml/xmlversion.h>
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26
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27 #ifdef LIBXML_ICONV_ENABLED
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28 #include <iconv.h>
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29 #endif
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30 #ifdef LIBXML_ICU_ENABLED
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31 #include <unicode/ucnv.h>
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32 #endif
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33 #ifdef __cplusplus
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34 extern "C" {
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35 #endif
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36
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37 /*
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38 * xmlCharEncoding:
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39 *
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40 * Predefined values for some standard encodings.
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41 * Libxml does not do beforehand translation on UTF8 and ISOLatinX.
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42 * It also supports ASCII, ISO-8859-1, and UTF16 (LE and BE) by default.
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43 *
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44 * Anything else would have to be translated to UTF8 before being
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45 * given to the parser itself. The BOM for UTF16 and the encoding
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46 * declaration are looked at and a converter is looked for at that
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47 * point. If not found the parser stops here as asked by the XML REC. A
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48 * converter can be registered by the user using xmlRegisterCharEncodingHandler
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49 * but the current form doesn't allow stateful transcoding (a serious
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50 * problem agreed !). If iconv has been found it will be used
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51 * automatically and allow stateful transcoding, the simplest is then
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52 * to be sure to enable iconv and to provide iconv libs for the encoding
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53 * support needed.
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54 *
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55 * Note that the generic "UTF-16" is not a predefined value. Instead, only
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56 * the specific UTF-16LE and UTF-16BE are present.
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57 */
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58 typedef enum {
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59 XML_CHAR_ENCODING_ERROR= -1, /* No char encoding detected */
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60 XML_CHAR_ENCODING_NONE= 0, /* No char encoding detected */
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61 XML_CHAR_ENCODING_UTF8= 1, /* UTF-8 */
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62 XML_CHAR_ENCODING_UTF16LE= 2, /* UTF-16 little endian */
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63 XML_CHAR_ENCODING_UTF16BE= 3, /* UTF-16 big endian */
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64 XML_CHAR_ENCODING_UCS4LE= 4, /* UCS-4 little endian */
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65 XML_CHAR_ENCODING_UCS4BE= 5, /* UCS-4 big endian */
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66 XML_CHAR_ENCODING_EBCDIC= 6, /* EBCDIC uh! */
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67 XML_CHAR_ENCODING_UCS4_2143=7, /* UCS-4 unusual ordering */
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68 XML_CHAR_ENCODING_UCS4_3412=8, /* UCS-4 unusual ordering */
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69 XML_CHAR_ENCODING_UCS2= 9, /* UCS-2 */
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70 XML_CHAR_ENCODING_8859_1= 10,/* ISO-8859-1 ISO Latin 1 */
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71 XML_CHAR_ENCODING_8859_2= 11,/* ISO-8859-2 ISO Latin 2 */
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72 XML_CHAR_ENCODING_8859_3= 12,/* ISO-8859-3 */
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73 XML_CHAR_ENCODING_8859_4= 13,/* ISO-8859-4 */
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74 XML_CHAR_ENCODING_8859_5= 14,/* ISO-8859-5 */
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75 XML_CHAR_ENCODING_8859_6= 15,/* ISO-8859-6 */
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76 XML_CHAR_ENCODING_8859_7= 16,/* ISO-8859-7 */
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77 XML_CHAR_ENCODING_8859_8= 17,/* ISO-8859-8 */
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78 XML_CHAR_ENCODING_8859_9= 18,/* ISO-8859-9 */
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79 XML_CHAR_ENCODING_2022_JP= 19,/* ISO-2022-JP */
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80 XML_CHAR_ENCODING_SHIFT_JIS=20,/* Shift_JIS */
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81 XML_CHAR_ENCODING_EUC_JP= 21,/* EUC-JP */
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82 XML_CHAR_ENCODING_ASCII= 22 /* pure ASCII */
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83 } xmlCharEncoding;
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84
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85 /**
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86 * xmlCharEncodingInputFunc:
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87 * @out: a pointer to an array of bytes to store the UTF-8 result
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88 * @outlen: the length of @out
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89 * @in: a pointer to an array of chars in the original encoding
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90 * @inlen: the length of @in
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91 *
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92 * Take a block of chars in the original encoding and try to convert
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93 * it to an UTF-8 block of chars out.
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94 *
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95 * Returns the number of bytes written, -1 if lack of space, or -2
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96 * if the transcoding failed.
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97 * The value of @inlen after return is the number of octets consumed
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98 * if the return value is positive, else unpredictiable.
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99 * The value of @outlen after return is the number of octets consumed.
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100 */
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101 typedef int (* xmlCharEncodingInputFunc)(unsigned char *out, int *outlen,
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102 const unsigned char *in, int *inlen);
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103
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104
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105 /**
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106 * xmlCharEncodingOutputFunc:
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107 * @out: a pointer to an array of bytes to store the result
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108 * @outlen: the length of @out
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109 * @in: a pointer to an array of UTF-8 chars
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110 * @inlen: the length of @in
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111 *
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112 * Take a block of UTF-8 chars in and try to convert it to another
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113 * encoding.
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114 * Note: a first call designed to produce heading info is called with
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115 * in = NULL. If stateful this should also initialize the encoder state.
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116 *
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117 * Returns the number of bytes written, -1 if lack of space, or -2
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118 * if the transcoding failed.
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119 * The value of @inlen after return is the number of octets consumed
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120 * if the return value is positive, else unpredictiable.
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121 * The value of @outlen after return is the number of octets produced.
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122 */
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123 typedef int (* xmlCharEncodingOutputFunc)(unsigned char *out, int *outlen,
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124 const unsigned char *in, int *inlen);
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125
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126
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127 /*
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128 * Block defining the handlers for non UTF-8 encodings.
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129 * If iconv is supported, there are two extra fields.
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130 */
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131 #ifdef LIBXML_ICU_ENABLED
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132 /* Size of pivot buffer, same as icu/source/common/ucnv.cpp CHUNK_SIZE */
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133 #define ICU_PIVOT_BUF_SIZE 1024
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134 struct _uconv_t {
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135 UConverter *uconv; /* for conversion between an encoding and UTF-16 */
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136 UConverter *utf8; /* for conversion between UTF-8 and UTF-16 */
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137 UChar pivot_buf[ICU_PIVOT_BUF_SIZE];
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138 UChar *pivot_source;
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139 UChar *pivot_target;
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140 };
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141 typedef struct _uconv_t uconv_t;
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142 #endif
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143
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144 typedef struct _xmlCharEncodingHandler xmlCharEncodingHandler;
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145 typedef xmlCharEncodingHandler *xmlCharEncodingHandlerPtr;
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146 struct _xmlCharEncodingHandler {
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147 char *name;
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148 xmlCharEncodingInputFunc input;
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149 xmlCharEncodingOutputFunc output;
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150 #ifdef LIBXML_ICONV_ENABLED
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151 iconv_t iconv_in;
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152 iconv_t iconv_out;
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153 #endif /* LIBXML_ICONV_ENABLED */
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154 #ifdef LIBXML_ICU_ENABLED
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155 uconv_t *uconv_in;
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156 uconv_t *uconv_out;
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157 #endif /* LIBXML_ICU_ENABLED */
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158 };
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159
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160 #ifdef __cplusplus
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161 }
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162 #endif
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163 #include <libxml/tree.h>
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164 #ifdef __cplusplus
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165 extern "C" {
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166 #endif
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167
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168 /*
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169 * Interfaces for encoding handlers.
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170 */
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171 XMLPUBFUN void XMLCALL
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172 xmlInitCharEncodingHandlers (void);
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173 XMLPUBFUN void XMLCALL
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174 xmlCleanupCharEncodingHandlers (void);
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175 XMLPUBFUN void XMLCALL
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176 xmlRegisterCharEncodingHandler (xmlCharEncodingHandlerPtr handler);
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177 XMLPUBFUN xmlCharEncodingHandlerPtr XMLCALL
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178 xmlGetCharEncodingHandler (xmlCharEncoding enc);
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179 XMLPUBFUN xmlCharEncodingHandlerPtr XMLCALL
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180 xmlFindCharEncodingHandler (const char *name);
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181 XMLPUBFUN xmlCharEncodingHandlerPtr XMLCALL
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182 xmlNewCharEncodingHandler (const char *name,
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183 xmlCharEncodingInputFunc input,
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184 xmlCharEncodingOutputFunc output);
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185
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186 /*
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187 * Interfaces for encoding names and aliases.
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188 */
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189 XMLPUBFUN int XMLCALL
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190 xmlAddEncodingAlias (const char *name,
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191 const char *alias);
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192 XMLPUBFUN int XMLCALL
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193 xmlDelEncodingAlias (const char *alias);
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194 XMLPUBFUN const char * XMLCALL
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195 xmlGetEncodingAlias (const char *alias);
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196 XMLPUBFUN void XMLCALL
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197 xmlCleanupEncodingAliases (void);
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198 XMLPUBFUN xmlCharEncoding XMLCALL
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199 xmlParseCharEncoding (const char *name);
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200 XMLPUBFUN const char * XMLCALL
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201 xmlGetCharEncodingName (xmlCharEncoding enc);
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202
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203 /*
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204 * Interfaces directly used by the parsers.
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205 */
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206 XMLPUBFUN xmlCharEncoding XMLCALL
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207 xmlDetectCharEncoding (const unsigned char *in,
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208 int len);
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209
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210 XMLPUBFUN int XMLCALL
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211 xmlCharEncOutFunc (xmlCharEncodingHandler *handler,
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212 xmlBufferPtr out,
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213 xmlBufferPtr in);
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214
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215 XMLPUBFUN int XMLCALL
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216 xmlCharEncInFunc (xmlCharEncodingHandler *handler,
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217 xmlBufferPtr out,
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218 xmlBufferPtr in);
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219 XMLPUBFUN int XMLCALL
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220 xmlCharEncFirstLine (xmlCharEncodingHandler *handler,
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221 xmlBufferPtr out,
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222 xmlBufferPtr in);
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223 XMLPUBFUN int XMLCALL
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224 xmlCharEncCloseFunc (xmlCharEncodingHandler *handler);
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225
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226 /*
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227 * Export a few useful functions
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228 */
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229 #ifdef LIBXML_OUTPUT_ENABLED
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230 XMLPUBFUN int XMLCALL
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231 UTF8Toisolat1 (unsigned char *out,
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232 int *outlen,
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233 const unsigned char *in,
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234 int *inlen);
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235 #endif /* LIBXML_OUTPUT_ENABLED */
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236 XMLPUBFUN int XMLCALL
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237 isolat1ToUTF8 (unsigned char *out,
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238 int *outlen,
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239 const unsigned char *in,
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240 int *inlen);
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241 #ifdef __cplusplus
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242 }
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243 #endif
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244
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245 #endif /* __XML_CHAR_ENCODING_H__ */