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html: Deduplicate code in htmlCurrentChar

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This commit is contained in:
Nick Wellnhofer 2024-09-08 19:11:14 +02:00
parent 3adb396d87
commit 341dc78f24
1 changed files with 32 additions and 53 deletions
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85
HTMLparser.c
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@ -372,43 +372,6 @@ htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
if (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)
xmlParserGrow(ctxt);
if ((ctxt->input->flags & XML_INPUT_HAS_ENCODING) == 0) {
xmlChar * guess;
/*
* Assume it's a fixed length encoding (1) with
* a compatible encoding for the ASCII set, since
* HTML constructs only use < 128 chars
*/
if (*ctxt->input->cur < 0x80) {
if (*ctxt->input->cur == 0) {
if (ctxt->input->cur < ctxt->input->end) {
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
"Char 0x%X out of allowed range\n", 0);
*len = 1;
return(' ');
} else {
*len = 0;
return(0);
}
}
*len = 1;
return(*ctxt->input->cur);
}
/*
* Humm this is bad, do an automatic flow conversion
*/
guess = htmlFindEncoding(ctxt);
if (guess == NULL) {
xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
} else {
xmlSwitchEncodingName(ctxt, (const char *) guess);
xmlFree(guess);
}
ctxt->input->flags |= XML_INPUT_HAS_ENCODING;
}
/*
* We are supposed to handle UTF8, check it's valid
* From rfc2044: encoding of the Unicode values on UTF-8:
@ -422,9 +385,40 @@ htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
*/
cur = ctxt->input->cur;
c = *cur;
if (c & 0x80) {
if (c < 0x80) {
if (c == 0) {
if (ctxt->input->cur < ctxt->input->end) {
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
"Char 0x%X out of allowed range\n", 0);
*len = 1;
return(' ');
} else {
*len = 0;
return(0);
}
}
*len = 1;
return(c);
} else {
size_t avail;
if ((ctxt->input->flags & XML_INPUT_HAS_ENCODING) == 0) {
xmlChar * guess;
guess = htmlFindEncoding(ctxt);
if (guess == NULL) {
xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
} else {
xmlSwitchEncodingName(ctxt, (const char *) guess);
xmlFree(guess);
}
ctxt->input->flags |= XML_INPUT_HAS_ENCODING;
cur = ctxt->input->cur;
c = *cur;
}
if ((c & 0x40) == 0)
goto encoding_error;
@ -469,21 +463,6 @@ htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
"Char 0x%X out of allowed range\n", val);
}
return(val);
} else {
if (*ctxt->input->cur == 0) {
if (ctxt->input->cur < ctxt->input->end) {
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
"Char 0x%X out of allowed range\n", 0);
*len = 1;
return(' ');
} else {
*len = 0;
return(0);
}
}
/* 1-byte code */
*len = 1;
return(*ctxt->input->cur);
}
encoding_error: