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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef IS_LITTLE_ENDIAN
#define PREFIX(ident) little2_ ## ident
#define BYTE_TYPE(p) LITTLE2_BYTE_TYPE(XmlGetUtf16InternalEncodingNS(), p)
#define IS_NAME_CHAR_MINBPC(p) LITTLE2_IS_NAME_CHAR_MINBPC(0, p)
#define IS_NMSTRT_CHAR_MINBPC(p) LITTLE2_IS_NMSTRT_CHAR_MINBPC(0, p)
#else
#define PREFIX(ident) big2_ ## ident
#define BYTE_TYPE(p) BIG2_BYTE_TYPE(XmlGetUtf16InternalEncodingNS(), p)
#define IS_NAME_CHAR_MINBPC(p) BIG2_IS_NAME_CHAR_MINBPC(0, p)
#define IS_NMSTRT_CHAR_MINBPC(p) BIG2_IS_NMSTRT_CHAR_MINBPC(0, p)
#endif
#define MOZ_EXPAT_VALID_QNAME (0)
#define MOZ_EXPAT_EMPTY_QNAME (1 << 0)
#define MOZ_EXPAT_INVALID_CHARACTER (1 << 1)
#define MOZ_EXPAT_MALFORMED (1 << 2)
int MOZ_XMLCheckQName(const char* ptr, const char* end, int ns_aware,
const char** colon)
{
int result = MOZ_EXPAT_VALID_QNAME;
int nmstrt = 1;
*colon = 0;
if (ptr == end) {
return MOZ_EXPAT_EMPTY_QNAME;
}
do {
switch (BYTE_TYPE(ptr)) {
case BT_COLON:
/* We're namespace-aware and either first or last character is a colon
or we've already seen a colon. */
if (ns_aware && (nmstrt || *colon || ptr + 2 == end)) {
return MOZ_EXPAT_MALFORMED;
}
*colon = ptr;
nmstrt = ns_aware; /* e.g. "a:0" should be valid if !ns_aware */
break;
case BT_NONASCII:
if (!IS_NAME_CHAR_MINBPC(ptr) ||
(nmstrt && !*colon && !IS_NMSTRT_CHAR_MINBPC(ptr))) {
return MOZ_EXPAT_INVALID_CHARACTER;
}
if (nmstrt && *colon && !IS_NMSTRT_CHAR_MINBPC(ptr)) {
/* If a non-starting character like a number is right after the colon,
this is a namespace error, not invalid character */
return MOZ_EXPAT_MALFORMED;
}
nmstrt = 0;
break;
case BT_NMSTRT:
case BT_HEX:
nmstrt = 0;
break;
case BT_DIGIT:
case BT_NAME:
case BT_MINUS:
if (nmstrt) {
return MOZ_EXPAT_INVALID_CHARACTER;
}
break;
default:
return MOZ_EXPAT_INVALID_CHARACTER;
}
ptr += 2;
} while (ptr != end);
return result;
}
int MOZ_XMLIsLetter(const char* ptr)
{
switch (BYTE_TYPE(ptr)) {
case BT_NONASCII:
if (!IS_NMSTRT_CHAR_MINBPC(ptr)) {
return 0;
}
/* fall through */
case BT_NMSTRT:
case BT_HEX:
return 1;
default:
return 0;
}
}
int MOZ_XMLIsNCNameChar(const char* ptr)
{
switch (BYTE_TYPE(ptr)) {
case BT_NONASCII:
if (!IS_NAME_CHAR_MINBPC(ptr)) {
return 0;
}
/* fall through */
case BT_NMSTRT:
case BT_HEX:
case BT_DIGIT:
case BT_NAME:
case BT_MINUS:
return 1;
default:
return 0;
}
}
int MOZ_XMLTranslateEntity(const char* ptr, const char* end, const char** next,
XML_Char* result)
{
// Can we assert here somehow?
// MOZ_ASSERT(*ptr == '&');
const ENCODING* enc = XmlGetUtf16InternalEncodingNS();
/* scanRef expects to be pointed to the char after the '&'. */
int tok = PREFIX(scanRef)(enc, ptr + enc->minBytesPerChar, end, next);
if (tok <= XML_TOK_INVALID) {
return 0;
}
if (tok == XML_TOK_CHAR_REF) {
/* XmlCharRefNumber expects to be pointed to the '&'. */
int n = XmlCharRefNumber(enc, ptr);
/* We could get away with just < 0, but better safe than sorry. */
if (n <= 0) {
return 0;
}
return XmlUtf16Encode(n, (unsigned short*)result);
}
if (tok == XML_TOK_ENTITY_REF) {
/* XmlPredefinedEntityName expects to be pointed to the char after '&'.
*next points to after the semicolon, so the entity ends at
*next - enc->minBytesPerChar. */
XML_Char ch =
(XML_Char)XmlPredefinedEntityName(enc, ptr + enc->minBytesPerChar,
*next - enc->minBytesPerChar);
if (!ch) {
return 0;
}
*result = ch;
return 1;
}
return 0;
}
#undef PREFIX
#undef BYTE_TYPE
#undef IS_NAME_CHAR_MINBPC
#undef IS_NMSTRT_CHAR_MINBPC
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