Nikolay Sivov : xmllite: Add partial support for xml declaration parsing.
Module: wine Branch: master Commit: acb56b0796ec53b37789977e600c2839156d0da4 URL: http://source.winehq.org/git/wine.git/?a=commit;h=acb56b0796ec53b37789977e60... Author: Nikolay Sivov <nsivov(a)codeweavers.com> Date: Sun Nov 25 21:59:49 2012 -0500 xmllite: Add partial support for xml declaration parsing. --- dlls/xmllite/reader.c | 148 +++++++++++++++++++++++++++++++++++++++++++++++-- 1 files changed, 142 insertions(+), 6 deletions(-) diff --git a/dlls/xmllite/reader.c b/dlls/xmllite/reader.c index b0ceac4..0d21e79 100644 --- a/dlls/xmllite/reader.c +++ b/dlls/xmllite/reader.c @@ -1,7 +1,7 @@ /* * IXmlReader implementation * - * Copyright 2010 Nikolay Sivov + * Copyright 2010, 2012 Nikolay Sivov * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -48,7 +48,7 @@ static const WCHAR utf8W[] = {'U','T','F','-','8',0}; struct xml_encoding_data { - const WCHAR *encoding; + const WCHAR *name; xml_encoding enc; UINT cp; }; @@ -213,11 +213,11 @@ static HRESULT get_code_page(xml_encoding encoding, UINT *cp) return S_OK; } -static xml_encoding parse_encoding_name(const WCHAR *encoding) +static xml_encoding parse_encoding_name(const WCHAR *name) { int min, max, n, c; - if (!encoding) return XmlEncoding_Unknown; + if (!name) return XmlEncoding_Unknown; min = 0; max = sizeof(xml_encoding_map)/sizeof(struct xml_encoding_data) - 1; @@ -226,7 +226,7 @@ static xml_encoding parse_encoding_name(const WCHAR *encoding) { n = (min+max)/2; - c = strcmpiW(xml_encoding_map[n].encoding, encoding); + c = strcmpiW(xml_encoding_map[n].name, name); if (!c) return xml_encoding_map[n].enc; @@ -431,6 +431,136 @@ static void readerinput_switchencoding(xmlreaderinput *readerinput, xml_encoding readerinput->buffer->code_page = cp; } +static inline const WCHAR *reader_get_cur(xmlreader *reader) +{ + return (WCHAR*)reader->input->buffer->utf16.cur; +} + +static int reader_cmp(xmlreader *reader, const WCHAR *str) +{ + const WCHAR *ptr = reader_get_cur(reader); + int i = 0; + + return strncmpW(str, ptr, strlenW(str)); + + while (str[i]) { + if (ptr[i] != str[i]) return 0; + i++; + } + + return 1; +} + +/* moves cursor n WCHARs forward */ +static void reader_skipn(xmlreader *reader, int n) +{ + encoded_buffer *buffer = &reader->input->buffer->utf16; + const WCHAR *ptr = reader_get_cur(reader); + + while (*ptr++ && n--) + { + buffer->cur += sizeof(WCHAR); + reader->pos++; + } +} + +/* [3] S ::= (#x20 | #x9 | #xD | #xA)+ */ +static int reader_skipspaces(xmlreader *reader) +{ + encoded_buffer *buffer = &reader->input->buffer->utf16; + const WCHAR *ptr = reader_get_cur(reader), *start = ptr; + + while (*ptr == ' ' || *ptr == '\t' || *ptr == '\r' || *ptr == '\n') + { + buffer->cur += sizeof(WCHAR); + if (*ptr == '\r') + reader->pos = 0; + else if (*ptr == '\n') + { + reader->line++; + reader->pos = 0; + } + else + reader->pos++; + ptr++; + } + + return ptr - start; +} + +/* [26] VersionNum ::= '1.' [0-9]+ */ +static HRESULT reader_parse_versionnum(xmlreader *reader) +{ + const WCHAR *ptr, *start = reader_get_cur(reader); + static const WCHAR onedotW[] = {'1','.',0}; + + if (reader_cmp(reader, onedotW)) return WC_E_XMLDECL; + /* skip "1." */ + reader_skipn(reader, 2); + + ptr = reader_get_cur(reader); + while (*ptr >= '0' && *ptr <= '9') + ptr++; + + if (ptr == start) return WC_E_DIGIT; + TRACE("version=%s\n", debugstr_wn(start, ptr-start)); + reader_skipn(reader, ptr-start); + return S_OK; +} + +/* [24] VersionInfo ::= S 'version' Eq ("'" VersionNum "'" | '"' VersionNum '"') */ +static HRESULT reader_parse_versioninfo(xmlreader *reader) +{ + static const WCHAR versionW[] = {'v','e','r','s','i','o','n',0}; + static const WCHAR dblquoteW[] = {'\"',0}; + static const WCHAR quoteW[] = {'\'',0}; + static const WCHAR eqW[] = {'=',0}; + HRESULT hr; + + if (!reader_skipspaces(reader)) return WC_E_WHITESPACE; + + if (reader_cmp(reader, versionW)) return WC_E_XMLDECL; + /* skip 'version' */ + reader_skipn(reader, 7); + + if (reader_cmp(reader, eqW)) return WC_E_EQUAL; + /* skip '=' */ + reader_skipn(reader, 1); + + if (reader_cmp(reader, quoteW) && reader_cmp(reader, dblquoteW)) + return WC_E_QUOTE; + /* skip "'"|'"' */ + reader_skipn(reader, 1); + + hr = reader_parse_versionnum(reader); + if (FAILED(hr)) return hr; + + if (reader_cmp(reader, quoteW) && reader_cmp(reader, dblquoteW)) + return WC_E_QUOTE; + + /* skip "'"|'"' */ + reader_skipn(reader, 1); + + return S_OK; +} + +/* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>' */ +static HRESULT reader_parse_xmldecl(xmlreader *reader) +{ + static const WCHAR xmldeclW[] = {'<','?','x','m','l',0}; + HRESULT hr; + + /* check if we have "<?xml" */ + if (reader_cmp(reader, xmldeclW)) return S_OK; + + reader_skipn(reader, 5); + hr = reader_parse_versioninfo(reader); + if (FAILED(hr)) + return hr; + + return E_NOTIMPL; +} + static HRESULT WINAPI xmlreader_QueryInterface(IXmlReader *iface, REFIID riid, void** ppvObject) { xmlreader *This = impl_from_IXmlReader(iface); @@ -586,11 +716,17 @@ static HRESULT WINAPI xmlreader_Read(IXmlReader* iface, XmlNodeType *node_type) /* try to detect encoding by BOM or data and set input code page */ hr = readerinput_detectencoding(This->input, &enc); - TRACE("detected encoding %d, 0x%08x\n", enc, hr); + TRACE("detected encoding %s, 0x%08x\n", debugstr_w(xml_encoding_map[enc].name), hr); if (FAILED(hr)) return hr; /* always switch first time cause we have to put something in */ readerinput_switchencoding(This->input, enc); + + /* parse xml declaration */ + hr = reader_parse_xmldecl(This); + if (FAILED(hr)) return hr; + + This->state = XmlReadState_Interactive; } return E_NOTIMPL;
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Alexandre Julliard