Nikolay Sivov : xmllite: Support pending input reads for PI nodes.
Module: wine Branch: master Commit: d1c52fe168c24ac61223b63cc41a10c63491271a URL: http://source.winehq.org/git/wine.git/?a=commit;h=d1c52fe168c24ac61223b63cc4... Author: Nikolay Sivov <nsivov(a)codeweavers.com> Date: Fri Mar 8 14:10:26 2013 +0400 xmllite: Support pending input reads for PI nodes. --- dlls/xmllite/reader.c | 99 +++++++++++++++++++++++++++++++++---------- dlls/xmllite/tests/reader.c | 1 + 2 files changed, 78 insertions(+), 22 deletions(-) diff --git a/dlls/xmllite/reader.c b/dlls/xmllite/reader.c index c6f416d..b4a7f33 100644 --- a/dlls/xmllite/reader.c +++ b/dlls/xmllite/reader.c @@ -56,6 +56,23 @@ typedef enum XmlReadInState_MiscEnd } XmlReaderInternalState; +/* This state denotes where parsing was interrupted by input problem. + Reader resumes parsing using this information. */ +typedef enum +{ + XmlReadResumeState_Initial, + XmlReadResumeState_PITarget, + XmlReadResumeState_PIBody +} XmlReaderResumeState; + +/* saved pointer index to resume from particular input position */ +typedef enum +{ + XmlReadResume_Name, /* PITarget */ + XmlReadResume_Body, /* PI body, comment text */ + XmlReadResume_Last +} XmlReaderResume; + typedef enum { StringValue_LocalName, @@ -146,6 +163,7 @@ typedef struct IMalloc *imalloc; XmlReadState state; XmlReaderInternalState instate; + XmlReaderResumeState resumestate; XmlNodeType nodetype; DtdProcessing dtdmode; UINT line, pos; /* reader position in XML stream */ @@ -155,7 +173,7 @@ typedef struct struct list elements; strval strvalues[StringValue_Last]; UINT depth; - WCHAR *save; + WCHAR *resume[XmlReadResume_Last]; /* pointers used to resume reader */ } xmlreader; struct input_buffer @@ -1031,9 +1049,9 @@ static HRESULT reader_parse_comment(xmlreader *reader) { WCHAR *start, *ptr; - if (reader->save) + if (reader->resume[XmlReadResume_Body]) { - start = reader->save; + start = reader->resume[XmlReadResume_Body]; ptr = reader_get_cur(reader); } else @@ -1043,7 +1061,7 @@ static HRESULT reader_parse_comment(xmlreader *reader) reader_shrink(reader); ptr = start = reader_get_cur(reader); reader->nodetype = XmlNodeType_Comment; - reader->save = start; + reader->resume[XmlReadResume_Body] = start; reader_set_strvalue(reader, StringValue_LocalName, NULL); reader_set_strvalue(reader, StringValue_QualifiedName, NULL); reader_set_strvalue(reader, StringValue_Value, NULL); @@ -1067,7 +1085,7 @@ static HRESULT reader_parse_comment(xmlreader *reader) reader_set_strvalue(reader, StringValue_LocalName, &strval_empty); reader_set_strvalue(reader, StringValue_QualifiedName, &strval_empty); reader_set_strvalue(reader, StringValue_Value, &value); - reader->save = NULL; + reader->resume[XmlReadResume_Body] = NULL; return S_OK; } else @@ -1166,10 +1184,18 @@ static inline int is_namechar(WCHAR ch) [5] Name ::= NameStartChar (NameChar)* */ static HRESULT reader_parse_name(xmlreader *reader, strval *name) { - WCHAR *ptr, *start = reader_get_cur(reader); + WCHAR *ptr, *start; - ptr = start; - if (!is_namestartchar(*ptr)) return WC_E_NAMECHARACTER; + if (reader->resume[XmlReadResume_Name]) + { + start = reader->resume[XmlReadResume_Name]; + ptr = reader_get_cur(reader); + } + else + { + ptr = start = reader_get_cur(reader); + if (!is_namestartchar(*ptr)) return WC_E_NAMECHARACTER; + } while (is_namechar(*ptr)) { @@ -1177,6 +1203,14 @@ static HRESULT reader_parse_name(xmlreader *reader, strval *name) ptr = reader_get_cur(reader); } + if (is_reader_pending(reader)) + { + reader->resume[XmlReadResume_Name] = start; + return E_PENDING; + } + else + reader->resume[XmlReadResume_Name] = NULL; + TRACE("name %s:%d\n", debugstr_wn(start, ptr-start), (int)(ptr-start)); name->str = start; name->len = ptr-start; @@ -1193,7 +1227,7 @@ static HRESULT reader_parse_pitarget(xmlreader *reader, strval *target) UINT i; hr = reader_parse_name(reader, &name); - if (FAILED(hr)) return WC_E_PI; + if (FAILED(hr)) return is_reader_pending(reader) ? E_PENDING : WC_E_PI; /* now that we got name check for illegal content */ if (name.len == 3 && !strncmpiW(name.str, xmlW, 3)) @@ -1216,12 +1250,20 @@ static HRESULT reader_parse_pi(xmlreader *reader) strval target; HRESULT hr; - /* skip '<?' */ - reader_skipn(reader, 2); - reader_shrink(reader); - - hr = reader_parse_pitarget(reader, &target); - if (FAILED(hr)) return hr; + switch (reader->resumestate) + { + case XmlReadResumeState_Initial: + /* skip '<?' */ + reader_skipn(reader, 2); + reader_shrink(reader); + reader->resumestate = XmlReadResumeState_PITarget; + case XmlReadResumeState_PITarget: + hr = reader_parse_pitarget(reader, &target); + if (FAILED(hr)) return hr; + reader->resumestate = XmlReadResumeState_PIBody; + default: + ; + } ptr = reader_get_cur(reader); /* exit earlier if there's no content */ @@ -1230,17 +1272,26 @@ static HRESULT reader_parse_pi(xmlreader *reader) /* skip '?>' */ reader_skipn(reader, 2); reader->nodetype = XmlNodeType_ProcessingInstruction; + reader->resumestate = XmlReadResumeState_Initial; reader_set_strvalue(reader, StringValue_LocalName, &target); reader_set_strvalue(reader, StringValue_QualifiedName, &target); reader_set_strvalue(reader, StringValue_Value, &strval_empty); return S_OK; } - /* now at least a single space char should be there */ - if (!is_wchar_space(*ptr)) return WC_E_WHITESPACE; - reader_skipspaces(reader); - - ptr = start = reader_get_cur(reader); + if (!reader->resume[XmlReadResume_Body]) + { + /* now at least a single space char should be there */ + if (!is_wchar_space(*ptr)) return WC_E_WHITESPACE; + reader_skipspaces(reader); + ptr = start = reader_get_cur(reader); + reader->resume[XmlReadResume_Body] = start; + } + else + { + start = reader->resume[XmlReadResume_Body]; + ptr = reader_get_cur(reader); + } while (*ptr) { @@ -1254,6 +1305,8 @@ static HRESULT reader_parse_pi(xmlreader *reader) /* skip '?>' */ reader_skipn(reader, 2); reader->nodetype = XmlNodeType_ProcessingInstruction; + reader->resumestate = XmlReadResumeState_Initial; + reader->resume[XmlReadResume_Body] = NULL; reader_set_strvalue(reader, StringValue_LocalName, &target); reader_set_strvalue(reader, StringValue_QualifiedName, &target); reader_set_strvalue(reader, StringValue_Value, &value); @@ -1832,7 +1885,8 @@ static HRESULT WINAPI xmlreader_SetInput(IXmlReader* iface, IUnknown *input) This->line = This->pos = 0; reader_clear_elements(This); This->depth = 0; - This->save = NULL; + This->resumestate = XmlReadResumeState_Initial; + memset(This->resume, 0, sizeof(This->resume)); /* just reset current input */ if (!input) @@ -2255,6 +2309,7 @@ HRESULT WINAPI CreateXmlReader(REFIID riid, void **obj, IMalloc *imalloc) reader->input = NULL; reader->state = XmlReadState_Closed; reader->instate = XmlReadInState_Initial; + reader->resumestate = XmlReadResumeState_Initial; reader->dtdmode = DtdProcessing_Prohibit; reader->line = reader->pos = 0; reader->imalloc = imalloc; @@ -2265,7 +2320,7 @@ HRESULT WINAPI CreateXmlReader(REFIID riid, void **obj, IMalloc *imalloc) reader->attr = NULL; list_init(&reader->elements); reader->depth = 0; - reader->save = NULL; + memset(reader->resume, 0, sizeof(reader->resume)); for (i = 0; i < StringValue_Last; i++) reader->strvalues[i] = strval_empty; diff --git a/dlls/xmllite/tests/reader.c b/dlls/xmllite/tests/reader.c index 65c3448..77e596a 100644 --- a/dlls/xmllite/tests/reader.c +++ b/dlls/xmllite/tests/reader.c @@ -852,6 +852,7 @@ static void test_read_comment(void) static struct test_entry pi_tests[] = { { "<?pi?>", "pi", "", S_OK }, { "<?pi ?>", "pi", "", S_OK }, + { "<?pi ?>", "pi", "", S_OK }, { "<?pi pi data?>", "pi", "pi data", S_OK }, { "<?pi pi data ?>", "pi", "pi data ", S_OK }, { "<?pi:pi?>", NULL, NULL, NC_E_NAMECOLON, WC_E_NAMECHARACTER },
participants (1)
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Alexandre Julliard