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kc3-lang/libxml2/parserInternals.c
Daniel Veillard
- parserInternals.c
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/* * parserInternals.c : Internal routines (and obsolete ones) needed for the * XML and HTML parsers. * * See Copyright for the status of this software. * * daniel@veillard.com */ #define IN_LIBXML #include "libxml.h" #if defined(WIN32) && !defined (__CYGWIN__) #define XML_DIR_SEP '\\' #else #define XML_DIR_SEP '/' #endif #include <string.h> #ifdef HAVE_CTYPE_H #include <ctype.h> #endif #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif #ifdef HAVE_SYS_STAT_H #include <sys/stat.h> #endif #ifdef HAVE_FCNTL_H #include <fcntl.h> #endif #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifdef HAVE_ZLIB_H #include <zlib.h> #endif #include <libxml/xmlmemory.h> #include <libxml/tree.h> #include <libxml/parser.h> #include <libxml/parserInternals.h> #include <libxml/valid.h> #include <libxml/entities.h> #include <libxml/xmlerror.h> #include <libxml/encoding.h> #include <libxml/valid.h> #include <libxml/xmlIO.h> #include <libxml/uri.h> #include <libxml/dict.h> #include <libxml/SAX.h> #ifdef LIBXML_CATALOG_ENABLED #include <libxml/catalog.h> #endif #include <libxml/globals.h> #include <libxml/chvalid.h> /* * Various global defaults for parsing */ /** * xmlCheckVersion: * @version: the include version number * * check the compiled lib version against the include one. * This can warn or immediately kill the application */ void xmlCheckVersion(int version) { int myversion = (int) LIBXML_VERSION; xmlInitParser(); if ((myversion / 10000) != (version / 10000)) { xmlGenericError(xmlGenericErrorContext, "Fatal: program compiled against libxml %d using libxml %d\n", (version / 10000), (myversion / 10000)); fprintf(stderr, "Fatal: program compiled against libxml %d using libxml %d\n", (version / 10000), (myversion / 10000)); } if ((myversion / 100) < (version / 100)) { xmlGenericError(xmlGenericErrorContext, "Warning: program compiled against libxml %d using older %d\n", (version / 100), (myversion / 100)); } } /************************************************************************ * * * Some factorized error routines * * * ************************************************************************/ /** * xmlErrMemory: * @ctxt: an XML parser context * @extra: extra informations * * Handle a redefinition of attribute error */ void xmlErrMemory(xmlParserCtxtPtr ctxt, const char *extra) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) { ctxt->errNo = XML_ERR_NO_MEMORY; ctxt->instate = XML_PARSER_EOF; ctxt->disableSAX = 1; } if (extra) __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra, NULL, NULL, 0, 0, "Memory allocation failed : %s\n", extra); else __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, 0, 0, "Memory allocation failed\n"); } /** * __xmlErrEncoding: * @ctxt: an XML parser context * @xmlerr: the error number * @msg: the error message * @str1: an string info * @str2: an string info * * Handle an encoding error */ void __xmlErrEncoding(xmlParserCtxtPtr ctxt, xmlParserErrors xmlerr, const char *msg, const xmlChar * str1, const xmlChar * str2) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) ctxt->errNo = xmlerr; __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, xmlerr, XML_ERR_FATAL, NULL, 0, (const char *) str1, (const char *) str2, NULL, 0, 0, msg, str1, str2); if (ctxt != NULL) { ctxt->wellFormed = 0; if (ctxt->recovery == 0) ctxt->disableSAX = 1; } } /** * xmlErrInternal: * @ctxt: an XML parser context * @msg: the error message * @str: error informations * * Handle an internal error */ static void xmlErrInternal(xmlParserCtxtPtr ctxt, const char *msg, const xmlChar * str) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) ctxt->errNo = XML_ERR_INTERNAL_ERROR; __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, XML_ERR_INTERNAL_ERROR, XML_ERR_FATAL, NULL, 0, (const char *) str, NULL, NULL, 0, 0, msg, str); if (ctxt != NULL) { ctxt->wellFormed = 0; if (ctxt->recovery == 0) ctxt->disableSAX = 1; } } /** * xmlErrEncodingInt: * @ctxt: an XML parser context * @error: the error number * @msg: the error message * @val: an integer value * * n encoding error */ static void xmlErrEncodingInt(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *msg, int val) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) ctxt->errNo = error; __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, val, 0, msg, val); if (ctxt != NULL) { ctxt->wellFormed = 0; if (ctxt->recovery == 0) ctxt->disableSAX = 1; } } /** * xmlIsLetter: * @c: an unicode character (int) * * Check whether the character is allowed by the production * [84] Letter ::= BaseChar | Ideographic * * Returns 0 if not, non-zero otherwise */ int xmlIsLetter(int c) { return(IS_BASECHAR(c) || IS_IDEOGRAPHIC(c)); } /************************************************************************ * * * Input handling functions for progressive parsing * * * ************************************************************************/ /* #define DEBUG_INPUT */ /* #define DEBUG_STACK */ /* #define DEBUG_PUSH */ /* we need to keep enough input to show errors in context */ #define LINE_LEN 80 #ifdef DEBUG_INPUT #define CHECK_BUFFER(in) check_buffer(in) static void check_buffer(xmlParserInputPtr in) { if (in->base != in->buf->buffer->content) { xmlGenericError(xmlGenericErrorContext, "xmlParserInput: base mismatch problem\n"); } if (in->cur < in->base) { xmlGenericError(xmlGenericErrorContext, "xmlParserInput: cur < base problem\n"); } if (in->cur > in->base + in->buf->buffer->use) { xmlGenericError(xmlGenericErrorContext, "xmlParserInput: cur > base + use problem\n"); } xmlGenericError(xmlGenericErrorContext,"buffer %x : content %x, cur %d, use %d, size %d\n", (int) in, (int) in->buf->buffer->content, in->cur - in->base, in->buf->buffer->use, in->buf->buffer->size); } #else #define CHECK_BUFFER(in) #endif /** * xmlParserInputRead: * @in: an XML parser input * @len: an indicative size for the lookahead * * This function refresh the input for the parser. It doesn't try to * preserve pointers to the input buffer, and discard already read data * * Returns the number of xmlChars read, or -1 in case of error, 0 indicate the * end of this entity */ int xmlParserInputRead(xmlParserInputPtr in, int len) { int ret; int used; int indx; if (in == NULL) return(-1); #ifdef DEBUG_INPUT xmlGenericError(xmlGenericErrorContext, "Read\n"); #endif if (in->buf == NULL) return(-1); if (in->base == NULL) return(-1); if (in->cur == NULL) return(-1); if (in->buf->buffer == NULL) return(-1); if (in->buf->readcallback == NULL) return(-1); CHECK_BUFFER(in); used = in->cur - in->buf->buffer->content; ret = xmlBufferShrink(in->buf->buffer, used); if (ret > 0) { in->cur -= ret; in->consumed += ret; } ret = xmlParserInputBufferRead(in->buf, len); if (in->base != in->buf->buffer->content) { /* * the buffer has been reallocated */ indx = in->cur - in->base; in->base = in->buf->buffer->content; in->cur = &in->buf->buffer->content[indx]; } in->end = &in->buf->buffer->content[in->buf->buffer->use]; CHECK_BUFFER(in); return(ret); } /** * xmlParserInputGrow: * @in: an XML parser input * @len: an indicative size for the lookahead * * This function increase the input for the parser. It tries to * preserve pointers to the input buffer, and keep already read data * * Returns the number of xmlChars read, or -1 in case of error, 0 indicate the * end of this entity */ int xmlParserInputGrow(xmlParserInputPtr in, int len) { int ret; int indx; if (in == NULL) return(-1); #ifdef DEBUG_INPUT xmlGenericError(xmlGenericErrorContext, "Grow\n"); #endif if (in->buf == NULL) return(-1); if (in->base == NULL) return(-1); if (in->cur == NULL) return(-1); if (in->buf->buffer == NULL) return(-1); CHECK_BUFFER(in); indx = in->cur - in->base; if (in->buf->buffer->use > (unsigned int) indx + INPUT_CHUNK) { CHECK_BUFFER(in); return(0); } if (in->buf->readcallback != NULL) ret = xmlParserInputBufferGrow(in->buf, len); else return(0); /* * NOTE : in->base may be a "dangling" i.e. freed pointer in this * block, but we use it really as an integer to do some * pointer arithmetic. Insure will raise it as a bug but in * that specific case, that's not ! */ if (in->base != in->buf->buffer->content) { /* * the buffer has been reallocated */ indx = in->cur - in->base; in->base = in->buf->buffer->content; in->cur = &in->buf->buffer->content[indx]; } in->end = &in->buf->buffer->content[in->buf->buffer->use]; CHECK_BUFFER(in); return(ret); } /** * xmlParserInputShrink: * @in: an XML parser input * * This function removes used input for the parser. */ void xmlParserInputShrink(xmlParserInputPtr in) { int used; int ret; int indx; #ifdef DEBUG_INPUT xmlGenericError(xmlGenericErrorContext, "Shrink\n"); #endif if (in == NULL) return; if (in->buf == NULL) return; if (in->base == NULL) return; if (in->cur == NULL) return; if (in->buf->buffer == NULL) return; CHECK_BUFFER(in); used = in->cur - in->buf->buffer->content; /* * Do not shrink on large buffers whose only a tiny fraction * was consumed */ if (used > INPUT_CHUNK) { ret = xmlBufferShrink(in->buf->buffer, used - LINE_LEN); if (ret > 0) { in->cur -= ret; in->consumed += ret; } in->end = &in->buf->buffer->content[in->buf->buffer->use]; } CHECK_BUFFER(in); if (in->buf->buffer->use > INPUT_CHUNK) { return; } xmlParserInputBufferRead(in->buf, 2 * INPUT_CHUNK); if (in->base != in->buf->buffer->content) { /* * the buffer has been reallocated */ indx = in->cur - in->base; in->base = in->buf->buffer->content; in->cur = &in->buf->buffer->content[indx]; } in->end = &in->buf->buffer->content[in->buf->buffer->use]; CHECK_BUFFER(in); } /************************************************************************ * * * UTF8 character input and related functions * * * ************************************************************************/ /** * xmlNextChar: * @ctxt: the XML parser context * * Skip to the next char input char. */ void xmlNextChar(xmlParserCtxtPtr ctxt) { if ((ctxt == NULL) || (ctxt->instate == XML_PARSER_EOF) || (ctxt->input == NULL)) return; if (ctxt->charset == XML_CHAR_ENCODING_UTF8) { if ((*ctxt->input->cur == 0) && (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0) && (ctxt->instate != XML_PARSER_COMMENT)) { /* * If we are at the end of the current entity and * the context allows it, we pop consumed entities * automatically. * the auto closing should be blocked in other cases */ xmlPopInput(ctxt); } else { const unsigned char *cur; unsigned char c; /* * 2.11 End-of-Line Handling * the literal two-character sequence "#xD#xA" or a standalone * literal #xD, an XML processor must pass to the application * the single character #xA. */ if (*(ctxt->input->cur) == '\n') { ctxt->input->line++; ctxt->input->col = 1; } else ctxt->input->col++; /* * We are supposed to handle UTF8, check it's valid * From rfc2044: encoding of the Unicode values on UTF-8: * * UCS-4 range (hex.) UTF-8 octet sequence (binary) * 0000 0000-0000 007F 0xxxxxxx * 0000 0080-0000 07FF 110xxxxx 10xxxxxx * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx * * Check for the 0x110000 limit too */ cur = ctxt->input->cur; c = *cur; if (c & 0x80) { if (c == 0xC0) goto encoding_error; if (cur[1] == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if ((cur[1] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xe0) == 0xe0) { unsigned int val; if (cur[2] == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if ((cur[2] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xf0) == 0xf0) { if (cur[3] == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if (((c & 0xf8) != 0xf0) || ((cur[3] & 0xc0) != 0x80)) goto encoding_error; /* 4-byte code */ ctxt->input->cur += 4; val = (cur[0] & 0x7) << 18; val |= (cur[1] & 0x3f) << 12; val |= (cur[2] & 0x3f) << 6; val |= cur[3] & 0x3f; } else { /* 3-byte code */ ctxt->input->cur += 3; val = (cur[0] & 0xf) << 12; val |= (cur[1] & 0x3f) << 6; val |= cur[2] & 0x3f; } if (((val > 0xd7ff) && (val < 0xe000)) || ((val > 0xfffd) && (val < 0x10000)) || (val >= 0x110000)) { xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x%X out of allowed range\n", val); } } else /* 2-byte code */ ctxt->input->cur += 2; } else /* 1-byte code */ ctxt->input->cur++; ctxt->nbChars++; if (*ctxt->input->cur == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); } } else { /* * Assume it's a fixed length encoding (1) with * a compatible encoding for the ASCII set, since * XML constructs only use < 128 chars */ if (*(ctxt->input->cur) == '\n') { ctxt->input->line++; ctxt->input->col = 1; } else ctxt->input->col++; ctxt->input->cur++; ctxt->nbChars++; if (*ctxt->input->cur == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); } if ((*ctxt->input->cur == '%') && (!ctxt->html)) xmlParserHandlePEReference(ctxt); if ((*ctxt->input->cur == 0) && (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) xmlPopInput(ctxt); return; encoding_error: /* * If we detect an UTF8 error that probably mean that the * input encoding didn't get properly advertised in the * declaration header. Report the error and switch the encoding * to ISO-Latin-1 (if you don't like this policy, just declare the * encoding !) */ if ((ctxt == NULL) || (ctxt->input == NULL) || (ctxt->input->end - ctxt->input->cur < 4)) { __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR, "Input is not proper UTF-8, indicate encoding !\n", NULL, NULL); } else { char buffer[150]; snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n", ctxt->input->cur[0], ctxt->input->cur[1], ctxt->input->cur[2], ctxt->input->cur[3]); __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR, "Input is not proper UTF-8, indicate encoding !\n%s", BAD_CAST buffer, NULL); } ctxt->charset = XML_CHAR_ENCODING_8859_1; ctxt->input->cur++; return; } /** * xmlCurrentChar: * @ctxt: the XML parser context * @len: pointer to the length of the char read * * The current char value, if using UTF-8 this may actually span multiple * bytes in the input buffer. Implement the end of line normalization: * 2.11 End-of-Line Handling * Wherever an external parsed entity or the literal entity value * of an internal parsed entity contains either the literal two-character * sequence "#xD#xA" or a standalone literal #xD, an XML processor * must pass to the application the single character #xA. * This behavior can conveniently be produced by normalizing all * line breaks to #xA on input, before parsing.) * * Returns the current char value and its length */ int xmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) { if ((ctxt == NULL) || (len == NULL) || (ctxt->input == NULL)) return(0); if (ctxt->instate == XML_PARSER_EOF) return(0); if ((*ctxt->input->cur >= 0x20) && (*ctxt->input->cur <= 0x7F)) { *len = 1; return((int) *ctxt->input->cur); } if (ctxt->charset == XML_CHAR_ENCODING_UTF8) { /* * We are supposed to handle UTF8, check it's valid * From rfc2044: encoding of the Unicode values on UTF-8: * * UCS-4 range (hex.) UTF-8 octet sequence (binary) * 0000 0000-0000 007F 0xxxxxxx * 0000 0080-0000 07FF 110xxxxx 10xxxxxx * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx * * Check for the 0x110000 limit too */ const unsigned char *cur = ctxt->input->cur; unsigned char c; unsigned int val; c = *cur; if (c & 0x80) { if (((c & 0x40) == 0) || (c == 0xC0)) goto encoding_error; if (cur[1] == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if ((cur[1] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xe0) == 0xe0) { if (cur[2] == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if ((cur[2] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xf0) == 0xf0) { if (cur[3] == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if (((c & 0xf8) != 0xf0) || ((cur[3] & 0xc0) != 0x80)) goto encoding_error; /* 4-byte code */ *len = 4; val = (cur[0] & 0x7) << 18; val |= (cur[1] & 0x3f) << 12; val |= (cur[2] & 0x3f) << 6; val |= cur[3] & 0x3f; if (val < 0x10000) goto encoding_error; } else { /* 3-byte code */ *len = 3; val = (cur[0] & 0xf) << 12; val |= (cur[1] & 0x3f) << 6; val |= cur[2] & 0x3f; if (val < 0x800) goto encoding_error; } } else { /* 2-byte code */ *len = 2; val = (cur[0] & 0x1f) << 6; val |= cur[1] & 0x3f; if (val < 0x80) goto encoding_error; } if (!IS_CHAR(val)) { xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x%X out of allowed range\n", val); } return(val); } else { /* 1-byte code */ *len = 1; if (*ctxt->input->cur == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); if ((*ctxt->input->cur == 0) && (ctxt->input->end > ctxt->input->cur)) { xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x0 out of allowed range\n", 0); } if (*ctxt->input->cur == 0xD) { if (ctxt->input->cur[1] == 0xA) { ctxt->nbChars++; ctxt->input->cur++; } return(0xA); } return((int) *ctxt->input->cur); } } /* * Assume it's a fixed length encoding (1) with * a compatible encoding for the ASCII set, since * XML constructs only use < 128 chars */ *len = 1; if (*ctxt->input->cur == 0xD) { if (ctxt->input->cur[1] == 0xA) { ctxt->nbChars++; ctxt->input->cur++; } return(0xA); } return((int) *ctxt->input->cur); encoding_error: /* * An encoding problem may arise from a truncated input buffer * splitting a character in the middle. In that case do not raise * an error but return 0 to endicate an end of stream problem */ if (ctxt->input->end - ctxt->input->cur < 4) { *len = 0; return(0); } /* * If we detect an UTF8 error that probably mean that the * input encoding didn't get properly advertised in the * declaration header. Report the error and switch the encoding * to ISO-Latin-1 (if you don't like this policy, just declare the * encoding !) */ { char buffer[150]; snprintf(&buffer[0], 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n", ctxt->input->cur[0], ctxt->input->cur[1], ctxt->input->cur[2], ctxt->input->cur[3]); __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR, "Input is not proper UTF-8, indicate encoding !\n%s", BAD_CAST buffer, NULL); } ctxt->charset = XML_CHAR_ENCODING_8859_1; *len = 1; return((int) *ctxt->input->cur); } /** * xmlStringCurrentChar: * @ctxt: the XML parser context * @cur: pointer to the beginning of the char * @len: pointer to the length of the char read * * The current char value, if using UTF-8 this may actually span multiple * bytes in the input buffer. * * Returns the current char value and its length */ int xmlStringCurrentChar(xmlParserCtxtPtr ctxt, const xmlChar * cur, int *len) { if ((len == NULL) || (cur == NULL)) return(0); if ((ctxt == NULL) || (ctxt->charset == XML_CHAR_ENCODING_UTF8)) { /* * We are supposed to handle UTF8, check it's valid * From rfc2044: encoding of the Unicode values on UTF-8: * * UCS-4 range (hex.) UTF-8 octet sequence (binary) * 0000 0000-0000 007F 0xxxxxxx * 0000 0080-0000 07FF 110xxxxx 10xxxxxx * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx * * Check for the 0x110000 limit too */ unsigned char c; unsigned int val; c = *cur; if (c & 0x80) { if ((cur[1] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xe0) == 0xe0) { if ((cur[2] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xf0) == 0xf0) { if (((c & 0xf8) != 0xf0) || ((cur[3] & 0xc0) != 0x80)) goto encoding_error; /* 4-byte code */ *len = 4; val = (cur[0] & 0x7) << 18; val |= (cur[1] & 0x3f) << 12; val |= (cur[2] & 0x3f) << 6; val |= cur[3] & 0x3f; } else { /* 3-byte code */ *len = 3; val = (cur[0] & 0xf) << 12; val |= (cur[1] & 0x3f) << 6; val |= cur[2] & 0x3f; } } else { /* 2-byte code */ *len = 2; val = (cur[0] & 0x1f) << 6; val |= cur[1] & 0x3f; } if (!IS_CHAR(val)) { xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x%X out of allowed range\n", val); } return (val); } else { /* 1-byte code */ *len = 1; return ((int) *cur); } } /* * Assume it's a fixed length encoding (1) with * a compatible encoding for the ASCII set, since * XML constructs only use < 128 chars */ *len = 1; return ((int) *cur); encoding_error: /* * An encoding problem may arise from a truncated input buffer * splitting a character in the middle. In that case do not raise * an error but return 0 to endicate an end of stream problem */ if ((ctxt == NULL) || (ctxt->input == NULL) || (ctxt->input->end - ctxt->input->cur < 4)) { *len = 0; return(0); } /* * If we detect an UTF8 error that probably mean that the * input encoding didn't get properly advertised in the * declaration header. Report the error and switch the encoding * to ISO-Latin-1 (if you don't like this policy, just declare the * encoding !) */ { char buffer[150]; snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n", ctxt->input->cur[0], ctxt->input->cur[1], ctxt->input->cur[2], ctxt->input->cur[3]); __xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR, "Input is not proper UTF-8, indicate encoding !\n%s", BAD_CAST buffer, NULL); } *len = 1; return ((int) *cur); } /** * xmlCopyCharMultiByte: * @out: pointer to an array of xmlChar * @val: the char value * * append the char value in the array * * Returns the number of xmlChar written */ int xmlCopyCharMultiByte(xmlChar *out, int val) { if (out == NULL) return(0); /* * We are supposed to handle UTF8, check it's valid * From rfc2044: encoding of the Unicode values on UTF-8: * * UCS-4 range (hex.) UTF-8 octet sequence (binary) * 0000 0000-0000 007F 0xxxxxxx * 0000 0080-0000 07FF 110xxxxx 10xxxxxx * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx */ if (val >= 0x80) { xmlChar *savedout = out; int bits; if (val < 0x800) { *out++= (val >> 6) | 0xC0; bits= 0; } else if (val < 0x10000) { *out++= (val >> 12) | 0xE0; bits= 6;} else if (val < 0x110000) { *out++= (val >> 18) | 0xF0; bits= 12; } else { xmlErrEncodingInt(NULL, XML_ERR_INVALID_CHAR, "Internal error, xmlCopyCharMultiByte 0x%X out of bound\n", val); return(0); } for ( ; bits >= 0; bits-= 6) *out++= ((val >> bits) & 0x3F) | 0x80 ; return (out - savedout); } *out = (xmlChar) val; return 1; } /** * xmlCopyChar: * @len: Ignored, compatibility * @out: pointer to an array of xmlChar * @val: the char value * * append the char value in the array * * Returns the number of xmlChar written */ int xmlCopyChar(int len ATTRIBUTE_UNUSED, xmlChar *out, int val) { if (out == NULL) return(0); /* the len parameter is ignored */ if (val >= 0x80) { return(xmlCopyCharMultiByte (out, val)); } *out = (xmlChar) val; return 1; } /************************************************************************ * * * Commodity functions to switch encodings * * * ************************************************************************/ /** * xmlSwitchEncoding: * @ctxt: the parser context * @enc: the encoding value (number) * * change the input functions when discovering the character encoding * of a given entity. * * Returns 0 in case of success, -1 otherwise */ int xmlSwitchEncoding(xmlParserCtxtPtr ctxt, xmlCharEncoding enc) { xmlCharEncodingHandlerPtr handler; if (ctxt == NULL) return(-1); switch (enc) { case XML_CHAR_ENCODING_ERROR: __xmlErrEncoding(ctxt, XML_ERR_UNKNOWN_ENCODING, "encoding unknown\n", NULL, NULL); return(-1); case XML_CHAR_ENCODING_NONE: /* let's assume it's UTF-8 without the XML decl */ ctxt->charset = XML_CHAR_ENCODING_UTF8; return(0); case XML_CHAR_ENCODING_UTF8: /* default encoding, no conversion should be needed */ ctxt->charset = XML_CHAR_ENCODING_UTF8; /* * Errata on XML-1.0 June 20 2001 * Specific handling of the Byte Order Mark for * UTF-8 */ if ((ctxt->input != NULL) && (ctxt->input->cur[0] == 0xEF) && (ctxt->input->cur[1] == 0xBB) && (ctxt->input->cur[2] == 0xBF)) { ctxt->input->cur += 3; } return(0); case XML_CHAR_ENCODING_UTF16LE: case XML_CHAR_ENCODING_UTF16BE: /*The raw input characters are encoded *in UTF-16. As we expect this function *to be called after xmlCharEncInFunc, we expect *ctxt->input->cur to contain UTF-8 encoded characters. *So the raw UTF16 Byte Order Mark *has also been converted into *an UTF-8 BOM. Let's skip that BOM. */ if ((ctxt->input != NULL) && (ctxt->input->cur != NULL) && (ctxt->input->cur[0] == 0xEF) && (ctxt->input->cur[1] == 0xBB) && (ctxt->input->cur[2] == 0xBF)) { ctxt->input->cur += 3; } break ; default: break; } handler = xmlGetCharEncodingHandler(enc); if (handler == NULL) { /* * Default handlers. */ switch (enc) { case XML_CHAR_ENCODING_ASCII: /* default encoding, no conversion should be needed */ ctxt->charset = XML_CHAR_ENCODING_UTF8; return(0); case XML_CHAR_ENCODING_UTF16LE: break; case XML_CHAR_ENCODING_UTF16BE: break; case XML_CHAR_ENCODING_UCS4LE: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "USC4 little endian", NULL); break; case XML_CHAR_ENCODING_UCS4BE: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "USC4 big endian", NULL); break; case XML_CHAR_ENCODING_EBCDIC: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "EBCDIC", NULL); break; case XML_CHAR_ENCODING_UCS4_2143: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "UCS4 2143", NULL); break; case XML_CHAR_ENCODING_UCS4_3412: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "UCS4 3412", NULL); break; case XML_CHAR_ENCODING_UCS2: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "UCS2", NULL); break; case XML_CHAR_ENCODING_8859_1: case XML_CHAR_ENCODING_8859_2: case XML_CHAR_ENCODING_8859_3: case XML_CHAR_ENCODING_8859_4: case XML_CHAR_ENCODING_8859_5: case XML_CHAR_ENCODING_8859_6: case XML_CHAR_ENCODING_8859_7: case XML_CHAR_ENCODING_8859_8: case XML_CHAR_ENCODING_8859_9: /* * We used to keep the internal content in the * document encoding however this turns being unmaintainable * So xmlGetCharEncodingHandler() will return non-null * values for this now. */ if ((ctxt->inputNr == 1) && (ctxt->encoding == NULL) && (ctxt->input != NULL) && (ctxt->input->encoding != NULL)) { ctxt->encoding = xmlStrdup(ctxt->input->encoding); } ctxt->charset = enc; return(0); case XML_CHAR_ENCODING_2022_JP: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "ISO-2022-JP", NULL); break; case XML_CHAR_ENCODING_SHIFT_JIS: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "Shift_JIS", NULL); break; case XML_CHAR_ENCODING_EUC_JP: __xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING, "encoding not supported %s\n", BAD_CAST "EUC-JP", NULL); break; default: break; } } if (handler == NULL) return(-1); ctxt->charset = XML_CHAR_ENCODING_UTF8; return(xmlSwitchToEncoding(ctxt, handler)); } /** * xmlSwitchInputEncoding: * @ctxt: the parser context * @input: the input stream * @handler: the encoding handler * * change the input functions when discovering the character encoding * of a given entity. * * Returns 0 in case of success, -1 otherwise */ int xmlSwitchInputEncoding(xmlParserCtxtPtr ctxt, xmlParserInputPtr input, xmlCharEncodingHandlerPtr handler) { int nbchars; if (handler == NULL) return (-1); if (input == NULL) return (-1); if (input->buf != NULL) { if (input->buf->encoder != NULL) { /* * Check in case the auto encoding detetection triggered * in already. */ if (input->buf->encoder == handler) return (0); /* * "UTF-16" can be used for both LE and BE if ((!xmlStrncmp(BAD_CAST input->buf->encoder->name, BAD_CAST "UTF-16", 6)) && (!xmlStrncmp(BAD_CAST handler->name, BAD_CAST "UTF-16", 6))) { return(0); } */ /* * Note: this is a bit dangerous, but that's what it * takes to use nearly compatible signature for different * encodings. */ xmlCharEncCloseFunc(input->buf->encoder); input->buf->encoder = handler; return (0); } input->buf->encoder = handler; /* * Is there already some content down the pipe to convert ? */ if ((input->buf->buffer != NULL) && (input->buf->buffer->use > 0)) { int processed; unsigned int use; /* * Specific handling of the Byte Order Mark for * UTF-16 */ if ((handler->name != NULL) && (!strcmp(handler->name, "UTF-16LE") || !strcmp(handler->name, "UTF-16")) && (input->cur[0] == 0xFF) && (input->cur[1] == 0xFE)) { input->cur += 2; } if ((handler->name != NULL) && (!strcmp(handler->name, "UTF-16BE")) && (input->cur[0] == 0xFE) && (input->cur[1] == 0xFF)) { input->cur += 2; } /* * Errata on XML-1.0 June 20 2001 * Specific handling of the Byte Order Mark for * UTF-8 */ if ((handler->name != NULL) && (!strcmp(handler->name, "UTF-8")) && (input->cur[0] == 0xEF) && (input->cur[1] == 0xBB) && (input->cur[2] == 0xBF)) { input->cur += 3; } /* * Shrink the current input buffer. * Move it as the raw buffer and create a new input buffer */ processed = input->cur - input->base; xmlBufferShrink(input->buf->buffer, processed); input->buf->raw = input->buf->buffer; input->buf->buffer = xmlBufferCreate(); input->buf->rawconsumed = processed; use = input->buf->raw->use; if (ctxt->html) { /* * convert as much as possible of the buffer */ nbchars = xmlCharEncInFunc(input->buf->encoder, input->buf->buffer, input->buf->raw); } else { /* * convert just enough to get * '<?xml version="1.0" encoding="xxx"?>' * parsed with the autodetected encoding * into the parser reading buffer. */ nbchars = xmlCharEncFirstLine(input->buf->encoder, input->buf->buffer, input->buf->raw); } if (nbchars < 0) { xmlErrInternal(ctxt, "switching encoding: encoder error\n", NULL); return (-1); } input->buf->rawconsumed += use - input->buf->raw->use; input->base = input->cur = input->buf->buffer->content; input->end = &input->base[input->buf->buffer->use]; } return (0); } else if (input->length == 0) { /* * When parsing a static memory array one must know the * size to be able to convert the buffer. */ xmlErrInternal(ctxt, "switching encoding : no input\n", NULL); return (-1); } return (0); } /** * xmlSwitchToEncoding: * @ctxt: the parser context * @handler: the encoding handler * * change the input functions when discovering the character encoding * of a given entity. * * Returns 0 in case of success, -1 otherwise */ int xmlSwitchToEncoding(xmlParserCtxtPtr ctxt, xmlCharEncodingHandlerPtr handler) { int ret = 0; if (handler != NULL) { if (ctxt->input != NULL) { ret = xmlSwitchInputEncoding(ctxt, ctxt->input, handler); } else { xmlErrInternal(ctxt, "xmlSwitchToEncoding : no input\n", NULL); return(-1); } /* * The parsing is now done in UTF8 natively */ ctxt->charset = XML_CHAR_ENCODING_UTF8; } else return(-1); return(ret); } /************************************************************************ * * * Commodity functions to handle entities processing * * * ************************************************************************/ /** * xmlFreeInputStream: * @input: an xmlParserInputPtr * * Free up an input stream. */ void xmlFreeInputStream(xmlParserInputPtr input) { if (input == NULL) return; if (input->filename != NULL) xmlFree((char *) input->filename); if (input->directory != NULL) xmlFree((char *) input->directory); if (input->encoding != NULL) xmlFree((char *) input->encoding); if (input->version != NULL) xmlFree((char *) input->version); if ((input->free != NULL) && (input->base != NULL)) input->free((xmlChar *) input->base); if (input->buf != NULL) xmlFreeParserInputBuffer(input->buf); xmlFree(input); } /** * xmlNewInputStream: * @ctxt: an XML parser context * * Create a new input stream structure * Returns the new input stream or NULL */ xmlParserInputPtr xmlNewInputStream(xmlParserCtxtPtr ctxt) { xmlParserInputPtr input; static int id = 0; input = (xmlParserInputPtr) xmlMalloc(sizeof(xmlParserInput)); if (input == NULL) { xmlErrMemory(ctxt, "couldn't allocate a new input stream\n"); return(NULL); } memset(input, 0, sizeof(xmlParserInput)); input->line = 1; input->col = 1; input->standalone = -1; /* * we don't care about thread reentrancy unicity for a single * parser context (and hence thread) is sufficient. */ input->id = id++; return(input); } /** * xmlNewIOInputStream: * @ctxt: an XML parser context * @input: an I/O Input * @enc: the charset encoding if known * * Create a new input stream structure encapsulating the @input into * a stream suitable for the parser. * * Returns the new input stream or NULL */ xmlParserInputPtr xmlNewIOInputStream(xmlParserCtxtPtr ctxt, xmlParserInputBufferPtr input, xmlCharEncoding enc) { xmlParserInputPtr inputStream; if (input == NULL) return(NULL); if (xmlParserDebugEntities) xmlGenericError(xmlGenericErrorContext, "new input from I/O\n"); inputStream = xmlNewInputStream(ctxt); if (inputStream == NULL) { return(NULL); } inputStream->filename = NULL; inputStream->buf = input; inputStream->base = inputStream->buf->buffer->content; inputStream->cur = inputStream->buf->buffer->content; inputStream->end = &inputStream->base[inputStream->buf->buffer->use]; if (enc != XML_CHAR_ENCODING_NONE) { xmlSwitchEncoding(ctxt, enc); } return(inputStream); } /** * xmlNewEntityInputStream: * @ctxt: an XML parser context * @entity: an Entity pointer * * Create a new input stream based on an xmlEntityPtr * * Returns the new input stream or NULL */ xmlParserInputPtr xmlNewEntityInputStream(xmlParserCtxtPtr ctxt, xmlEntityPtr entity) { xmlParserInputPtr input; if (entity == NULL) { xmlErrInternal(ctxt, "xmlNewEntityInputStream entity = NULL\n", NULL); return(NULL); } if (xmlParserDebugEntities) xmlGenericError(xmlGenericErrorContext, "new input from entity: %s\n", entity->name); if (entity->content == NULL) { switch (entity->etype) { case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY: xmlErrInternal(ctxt, "Cannot parse entity %s\n", entity->name); break; case XML_EXTERNAL_GENERAL_PARSED_ENTITY: case XML_EXTERNAL_PARAMETER_ENTITY: return(xmlLoadExternalEntity((char *) entity->URI, (char *) entity->ExternalID, ctxt)); case XML_INTERNAL_GENERAL_ENTITY: xmlErrInternal(ctxt, "Internal entity %s without content !\n", entity->name); break; case XML_INTERNAL_PARAMETER_ENTITY: xmlErrInternal(ctxt, "Internal parameter entity %s without content !\n", entity->name); break; case XML_INTERNAL_PREDEFINED_ENTITY: xmlErrInternal(ctxt, "Predefined entity %s without content !\n", entity->name); break; } return(NULL); } input = xmlNewInputStream(ctxt); if (input == NULL) { return(NULL); } if (entity->URI != NULL) input->filename = (char *) xmlStrdup((xmlChar *) entity->URI); input->base = entity->content; input->cur = entity->content; input->length = entity->length; input->end = &entity->content[input->length]; return(input); } /** * xmlNewStringInputStream: * @ctxt: an XML parser context * @buffer: an memory buffer * * Create a new input stream based on a memory buffer. * Returns the new input stream */ xmlParserInputPtr xmlNewStringInputStream(xmlParserCtxtPtr ctxt, const xmlChar *buffer) { xmlParserInputPtr input; if (buffer == NULL) { xmlErrInternal(ctxt, "xmlNewStringInputStream string = NULL\n", NULL); return(NULL); } if (xmlParserDebugEntities) xmlGenericError(xmlGenericErrorContext, "new fixed input: %.30s\n", buffer); input = xmlNewInputStream(ctxt); if (input == NULL) { xmlErrMemory(ctxt, "couldn't allocate a new input stream\n"); return(NULL); } input->base = buffer; input->cur = buffer; input->length = xmlStrlen(buffer); input->end = &buffer[input->length]; return(input); } /** * xmlNewInputFromFile: * @ctxt: an XML parser context * @filename: the filename to use as entity * * Create a new input stream based on a file or an URL. * * Returns the new input stream or NULL in case of error */ xmlParserInputPtr xmlNewInputFromFile(xmlParserCtxtPtr ctxt, const char *filename) { xmlParserInputBufferPtr buf; xmlParserInputPtr inputStream; char *directory = NULL; xmlChar *URI = NULL; if (xmlParserDebugEntities) xmlGenericError(xmlGenericErrorContext, "new input from file: %s\n", filename); if (ctxt == NULL) return(NULL); buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE); if (buf == NULL) { if (filename == NULL) __xmlLoaderErr(ctxt, "failed to load external entity: NULL filename \n", NULL); else __xmlLoaderErr(ctxt, "failed to load external entity \"%s\"\n", (const char *) filename); return(NULL); } inputStream = xmlNewInputStream(ctxt); if (inputStream == NULL) return(NULL); inputStream->buf = buf; inputStream = xmlCheckHTTPInput(ctxt, inputStream); if (inputStream == NULL) return(NULL); if (inputStream->filename == NULL) URI = xmlStrdup((xmlChar *) filename); else URI = xmlStrdup((xmlChar *) inputStream->filename); directory = xmlParserGetDirectory((const char *) URI); if (inputStream->filename != NULL) xmlFree((char *)inputStream->filename); inputStream->filename = (char *) xmlCanonicPath((const xmlChar *) URI); if (URI != NULL) xmlFree((char *) URI); inputStream->directory = directory; inputStream->base = inputStream->buf->buffer->content; inputStream->cur = inputStream->buf->buffer->content; inputStream->end = &inputStream->base[inputStream->buf->buffer->use]; if ((ctxt->directory == NULL) && (directory != NULL)) ctxt->directory = (char *) xmlStrdup((const xmlChar *) directory); return(inputStream); } /************************************************************************ * * * Commodity functions to handle parser contexts * * * ************************************************************************/ /** * xmlInitParserCtxt: * @ctxt: an XML parser context * * Initialize a parser context * * Returns 0 in case of success and -1 in case of error */ int xmlInitParserCtxt(xmlParserCtxtPtr ctxt) { xmlParserInputPtr input; if(ctxt==NULL) { xmlErrInternal(NULL, "Got NULL parser context\n", NULL); return(-1); } xmlDefaultSAXHandlerInit(); if (ctxt->dict == NULL) ctxt->dict = xmlDictCreate(); if (ctxt->dict == NULL) { xmlErrMemory(NULL, "cannot initialize parser context\n"); return(-1); } if (ctxt->sax == NULL) ctxt->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler)); if (ctxt->sax == NULL) { xmlErrMemory(NULL, "cannot initialize parser context\n"); return(-1); } else xmlSAXVersion(ctxt->sax, 2); ctxt->maxatts = 0; ctxt->atts = NULL; /* Allocate the Input stack */ if (ctxt->inputTab == NULL) { ctxt->inputTab = (xmlParserInputPtr *) xmlMalloc(5 * sizeof(xmlParserInputPtr)); ctxt->inputMax = 5; } if (ctxt->inputTab == NULL) { xmlErrMemory(NULL, "cannot initialize parser context\n"); ctxt->inputNr = 0; ctxt->inputMax = 0; ctxt->input = NULL; return(-1); } while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */ xmlFreeInputStream(input); } ctxt->inputNr = 0; ctxt->input = NULL; ctxt->version = NULL; ctxt->encoding = NULL; ctxt->standalone = -1; ctxt->hasExternalSubset = 0; ctxt->hasPErefs = 0; ctxt->html = 0; ctxt->external = 0; ctxt->instate = XML_PARSER_START; ctxt->token = 0; ctxt->directory = NULL; /* Allocate the Node stack */ if (ctxt->nodeTab == NULL) { ctxt->nodeTab = (xmlNodePtr *) xmlMalloc(10 * sizeof(xmlNodePtr)); ctxt->nodeMax = 10; } if (ctxt->nodeTab == NULL) { xmlErrMemory(NULL, "cannot initialize parser context\n"); ctxt->nodeNr = 0; ctxt->nodeMax = 0; ctxt->node = NULL; ctxt->inputNr = 0; ctxt->inputMax = 0; ctxt->input = NULL; return(-1); } ctxt->nodeNr = 0; ctxt->node = NULL; /* Allocate the Name stack */ if (ctxt->nameTab == NULL) { ctxt->nameTab = (const xmlChar **) xmlMalloc(10 * sizeof(xmlChar *)); ctxt->nameMax = 10; } if (ctxt->nameTab == NULL) { xmlErrMemory(NULL, "cannot initialize parser context\n"); ctxt->nodeNr = 0; ctxt->nodeMax = 0; ctxt->node = NULL; ctxt->inputNr = 0; ctxt->inputMax = 0; ctxt->input = NULL; ctxt->nameNr = 0; ctxt->nameMax = 0; ctxt->name = NULL; return(-1); } ctxt->nameNr = 0; ctxt->name = NULL; /* Allocate the space stack */ if (ctxt->spaceTab == NULL) { ctxt->spaceTab = (int *) xmlMalloc(10 * sizeof(int)); ctxt->spaceMax = 10; } if (ctxt->spaceTab == NULL) { xmlErrMemory(NULL, "cannot initialize parser context\n"); ctxt->nodeNr = 0; ctxt->nodeMax = 0; ctxt->node = NULL; ctxt->inputNr = 0; ctxt->inputMax = 0; ctxt->input = NULL; ctxt->nameNr = 0; ctxt->nameMax = 0; ctxt->name = NULL; ctxt->spaceNr = 0; ctxt->spaceMax = 0; ctxt->space = NULL; return(-1); } ctxt->spaceNr = 1; ctxt->spaceMax = 10; ctxt->spaceTab[0] = -1; ctxt->space = &ctxt->spaceTab[0]; ctxt->userData = ctxt; ctxt->myDoc = NULL; ctxt->wellFormed = 1; ctxt->nsWellFormed = 1; ctxt->valid = 1; ctxt->loadsubset = xmlLoadExtDtdDefaultValue; ctxt->validate = xmlDoValidityCheckingDefaultValue; ctxt->pedantic = xmlPedanticParserDefaultValue; ctxt->linenumbers = xmlLineNumbersDefaultValue; ctxt->keepBlanks = xmlKeepBlanksDefaultValue; if (ctxt->keepBlanks == 0) ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace; ctxt->vctxt.finishDtd = XML_CTXT_FINISH_DTD_0; ctxt->vctxt.userData = ctxt; ctxt->vctxt.error = xmlParserValidityError; ctxt->vctxt.warning = xmlParserValidityWarning; if (ctxt->validate) { if (xmlGetWarningsDefaultValue == 0) ctxt->vctxt.warning = NULL; else ctxt->vctxt.warning = xmlParserValidityWarning; ctxt->vctxt.nodeMax = 0; } ctxt->replaceEntities = xmlSubstituteEntitiesDefaultValue; ctxt->record_info = 0; ctxt->nbChars = 0; ctxt->checkIndex = 0; ctxt->inSubset = 0; ctxt->errNo = XML_ERR_OK; ctxt->depth = 0; ctxt->charset = XML_CHAR_ENCODING_UTF8; ctxt->catalogs = NULL; ctxt->nbentities = 0; xmlInitNodeInfoSeq(&ctxt->node_seq); return(0); } /** * xmlFreeParserCtxt: * @ctxt: an XML parser context * * Free all the memory used by a parser context. However the parsed * document in ctxt->myDoc is not freed. */ void xmlFreeParserCtxt(xmlParserCtxtPtr ctxt) { xmlParserInputPtr input; if (ctxt == NULL) return; while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */ xmlFreeInputStream(input); } if (ctxt->spaceTab != NULL) xmlFree(ctxt->spaceTab); if (ctxt->nameTab != NULL) xmlFree((xmlChar * *)ctxt->nameTab); if (ctxt->nodeTab != NULL) xmlFree(ctxt->nodeTab); if (ctxt->inputTab != NULL) xmlFree(ctxt->inputTab); if (ctxt->version != NULL) xmlFree((char *) ctxt->version); if (ctxt->encoding != NULL) xmlFree((char *) ctxt->encoding); if (ctxt->extSubURI != NULL) xmlFree((char *) ctxt->extSubURI); if (ctxt->extSubSystem != NULL) xmlFree((char *) ctxt->extSubSystem); #ifdef LIBXML_SAX1_ENABLED if ((ctxt->sax != NULL) && (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler)) #else if (ctxt->sax != NULL) #endif /* LIBXML_SAX1_ENABLED */ xmlFree(ctxt->sax); if (ctxt->directory != NULL) xmlFree((char *) ctxt->directory); if (ctxt->vctxt.nodeTab != NULL) xmlFree(ctxt->vctxt.nodeTab); if (ctxt->atts != NULL) xmlFree((xmlChar * *)ctxt->atts); if (ctxt->dict != NULL) xmlDictFree(ctxt->dict); if (ctxt->nsTab != NULL) xmlFree((char *) ctxt->nsTab); if (ctxt->pushTab != NULL) xmlFree(ctxt->pushTab); if (ctxt->attallocs != NULL) xmlFree(ctxt->attallocs); if (ctxt->attsDefault != NULL) xmlHashFree(ctxt->attsDefault, (xmlHashDeallocator) xmlFree); if (ctxt->attsSpecial != NULL) xmlHashFree(ctxt->attsSpecial, NULL); if (ctxt->freeElems != NULL) { xmlNodePtr cur, next; cur = ctxt->freeElems; while (cur != NULL) { next = cur->next; xmlFree(cur); cur = next; } } if (ctxt->freeAttrs != NULL) { xmlAttrPtr cur, next; cur = ctxt->freeAttrs; while (cur != NULL) { next = cur->next; xmlFree(cur); cur = next; } } /* * cleanup the error strings */ if (ctxt->lastError.message != NULL) xmlFree(ctxt->lastError.message); if (ctxt->lastError.file != NULL) xmlFree(ctxt->lastError.file); if (ctxt->lastError.str1 != NULL) xmlFree(ctxt->lastError.str1); if (ctxt->lastError.str2 != NULL) xmlFree(ctxt->lastError.str2); if (ctxt->lastError.str3 != NULL) xmlFree(ctxt->lastError.str3); #ifdef LIBXML_CATALOG_ENABLED if (ctxt->catalogs != NULL) xmlCatalogFreeLocal(ctxt->catalogs); #endif xmlFree(ctxt); } /** * xmlNewParserCtxt: * * Allocate and initialize a new parser context. * * Returns the xmlParserCtxtPtr or NULL */ xmlParserCtxtPtr xmlNewParserCtxt(void) { xmlParserCtxtPtr ctxt; ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt)); if (ctxt == NULL) { xmlErrMemory(NULL, "cannot allocate parser context\n"); return(NULL); } memset(ctxt, 0, sizeof(xmlParserCtxt)); if (xmlInitParserCtxt(ctxt) < 0) { xmlFreeParserCtxt(ctxt); return(NULL); } return(ctxt); } /************************************************************************ * * * Handling of node informations * * * ************************************************************************/ /** * xmlClearParserCtxt: * @ctxt: an XML parser context * * Clear (release owned resources) and reinitialize a parser context */ void xmlClearParserCtxt(xmlParserCtxtPtr ctxt) { if (ctxt==NULL) return; xmlClearNodeInfoSeq(&ctxt->node_seq); xmlCtxtReset(ctxt); } /** * xmlParserFindNodeInfo: * @ctx: an XML parser context * @node: an XML node within the tree * * Find the parser node info struct for a given node * * Returns an xmlParserNodeInfo block pointer or NULL */ const xmlParserNodeInfo * xmlParserFindNodeInfo(const xmlParserCtxtPtr ctx, const xmlNodePtr node) { unsigned long pos; if ((ctx == NULL) || (node == NULL)) return (NULL); /* Find position where node should be at */ pos = xmlParserFindNodeInfoIndex(&ctx->node_seq, node); if (pos < ctx->node_seq.length && ctx->node_seq.buffer[pos].node == node) return &ctx->node_seq.buffer[pos]; else return NULL; } /** * xmlInitNodeInfoSeq: * @seq: a node info sequence pointer * * -- Initialize (set to initial state) node info sequence */ void xmlInitNodeInfoSeq(xmlParserNodeInfoSeqPtr seq) { if (seq == NULL) return; seq->length = 0; seq->maximum = 0; seq->buffer = NULL; } /** * xmlClearNodeInfoSeq: * @seq: a node info sequence pointer * * -- Clear (release memory and reinitialize) node * info sequence */ void xmlClearNodeInfoSeq(xmlParserNodeInfoSeqPtr seq) { if (seq == NULL) return; if (seq->buffer != NULL) xmlFree(seq->buffer); xmlInitNodeInfoSeq(seq); } /** * xmlParserFindNodeInfoIndex: * @seq: a node info sequence pointer * @node: an XML node pointer * * * xmlParserFindNodeInfoIndex : Find the index that the info record for * the given node is or should be at in a sorted sequence * * Returns a long indicating the position of the record */ unsigned long xmlParserFindNodeInfoIndex(const xmlParserNodeInfoSeqPtr seq, const xmlNodePtr node) { unsigned long upper, lower, middle; int found = 0; if ((seq == NULL) || (node == NULL)) return ((unsigned long) -1); /* Do a binary search for the key */ lower = 1; upper = seq->length; middle = 0; while (lower <= upper && !found) { middle = lower + (upper - lower) / 2; if (node == seq->buffer[middle - 1].node) found = 1; else if (node < seq->buffer[middle - 1].node) upper = middle - 1; else lower = middle + 1; } /* Return position */ if (middle == 0 || seq->buffer[middle - 1].node < node) return middle; else return middle - 1; } /** * xmlParserAddNodeInfo: * @ctxt: an XML parser context * @info: a node info sequence pointer * * Insert node info record into the sorted sequence */ void xmlParserAddNodeInfo(xmlParserCtxtPtr ctxt, const xmlParserNodeInfoPtr info) { unsigned long pos; if ((ctxt == NULL) || (info == NULL)) return; /* Find pos and check to see if node is already in the sequence */ pos = xmlParserFindNodeInfoIndex(&ctxt->node_seq, (xmlNodePtr) info->node); if ((pos < ctxt->node_seq.length) && (ctxt->node_seq.buffer != NULL) && (ctxt->node_seq.buffer[pos].node == info->node)) { ctxt->node_seq.buffer[pos] = *info; } /* Otherwise, we need to add new node to buffer */ else { if (ctxt->node_seq.length + 1 > ctxt->node_seq.maximum) { xmlParserNodeInfo *tmp_buffer; unsigned int byte_size; if (ctxt->node_seq.maximum == 0) ctxt->node_seq.maximum = 2; byte_size = (sizeof(*ctxt->node_seq.buffer) * (2 * ctxt->node_seq.maximum)); if (ctxt->node_seq.buffer == NULL) tmp_buffer = (xmlParserNodeInfo *) xmlMalloc(byte_size); else tmp_buffer = (xmlParserNodeInfo *) xmlRealloc(ctxt->node_seq.buffer, byte_size); if (tmp_buffer == NULL) { xmlErrMemory(ctxt, "failed to allocate buffer\n"); return; } ctxt->node_seq.buffer = tmp_buffer; ctxt->node_seq.maximum *= 2; } /* If position is not at end, move elements out of the way */ if (pos != ctxt->node_seq.length) { unsigned long i; for (i = ctxt->node_seq.length; i > pos; i--) ctxt->node_seq.buffer[i] = ctxt->node_seq.buffer[i - 1]; } /* Copy element and increase length */ ctxt->node_seq.buffer[pos] = *info; ctxt->node_seq.length++; } } /************************************************************************ * * * Defaults settings * * * ************************************************************************/ /** * xmlPedanticParserDefault: * @val: int 0 or 1 * * Set and return the previous value for enabling pedantic warnings. * * Returns the last value for 0 for no substitution, 1 for substitution. */ int xmlPedanticParserDefault(int val) { int old = xmlPedanticParserDefaultValue; xmlPedanticParserDefaultValue = val; return(old); } /** * xmlLineNumbersDefault: * @val: int 0 or 1 * * Set and return the previous value for enabling line numbers in elements * contents. This may break on old application and is turned off by default. * * Returns the last value for 0 for no substitution, 1 for substitution. */ int xmlLineNumbersDefault(int val) { int old = xmlLineNumbersDefaultValue; xmlLineNumbersDefaultValue = val; return(old); } /** * xmlSubstituteEntitiesDefault: * @val: int 0 or 1 * * Set and return the previous value for default entity support. * Initially the parser always keep entity references instead of substituting * entity values in the output. This function has to be used to change the * default parser behavior * SAX::substituteEntities() has to be used for changing that on a file by * file basis. * * Returns the last value for 0 for no substitution, 1 for substitution. */ int xmlSubstituteEntitiesDefault(int val) { int old = xmlSubstituteEntitiesDefaultValue; xmlSubstituteEntitiesDefaultValue = val; return(old); } /** * xmlKeepBlanksDefault: * @val: int 0 or 1 * * Set and return the previous value for default blanks text nodes support. * The 1.x version of the parser used an heuristic to try to detect * ignorable white spaces. As a result the SAX callback was generating * xmlSAX2IgnorableWhitespace() callbacks instead of characters() one, and when * using the DOM output text nodes containing those blanks were not generated. * The 2.x and later version will switch to the XML standard way and * ignorableWhitespace() are only generated when running the parser in * validating mode and when the current element doesn't allow CDATA or * mixed content. * This function is provided as a way to force the standard behavior * on 1.X libs and to switch back to the old mode for compatibility when * running 1.X client code on 2.X . Upgrade of 1.X code should be done * by using xmlIsBlankNode() commodity function to detect the "empty" * nodes generated. * This value also affect autogeneration of indentation when saving code * if blanks sections are kept, indentation is not generated. * * Returns the last value for 0 for no substitution, 1 for substitution. */ int xmlKeepBlanksDefault(int val) { int old = xmlKeepBlanksDefaultValue; xmlKeepBlanksDefaultValue = val; xmlIndentTreeOutput = !val; return(old); } #define bottom_parserInternals #include "elfgcchack.h"