X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/24c80a284c7eaa3652f13c7a491a506623bd5e16..eec960fa8987d15fd87e249c8441474188124425:/src/xml/xml.cpp diff --git a/src/xml/xml.cpp b/src/xml/xml.cpp index 1d567b96c8..6a76beb7c6 100644 --- a/src/xml/xml.cpp +++ b/src/xml/xml.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: xml.cpp +// Name: src/xml/xml.cpp // Purpose: wxXmlDocument - XML parser & data holder class // Author: Vaclav Slavik // Created: 2000/03/05 @@ -15,23 +15,34 @@ #pragma hdrstop #endif +#if wxUSE_XML + #include "wx/xml/xml.h" -#if wxUSE_XML +#ifndef WX_PRECOMP + #include "wx/intl.h" + #include "wx/log.h" + #include "wx/app.h" +#endif #include "wx/wfstream.h" #include "wx/datstrm.h" #include "wx/zstream.h" -#include "wx/log.h" -#include "wx/intl.h" #include "wx/strconv.h" #include "expat.h" // from Expat // DLL options compatibility check: -#include "wx/app.h" WX_CHECK_BUILD_OPTIONS("wxXML") + +IMPLEMENT_CLASS(wxXmlDocument, wxObject) + + +// a private utility used by wxXML +static bool wxIsWhiteOnly(const wxChar *buf); + + //----------------------------------------------------------------------------- // wxXmlNode //----------------------------------------------------------------------------- @@ -170,21 +181,40 @@ void wxXmlNode::AddChild(wxXmlNode *child) child->m_parent = this; } -void wxXmlNode::InsertChild(wxXmlNode *child, wxXmlNode *before_node) +bool wxXmlNode::InsertChild(wxXmlNode *child, wxXmlNode *before_node) { - wxASSERT_MSG(before_node->GetParent() == this, wxT("wxXmlNode::InsertChild - the node has incorrect parent")); + wxCHECK_MSG(before_node == NULL || before_node->GetParent() == this, false, + wxT("wxXmlNode::InsertChild - the node has incorrect parent")); + wxCHECK_MSG(child, false, wxT("Cannot insert a NULL pointer!")); if (m_children == before_node) m_children = child; + else if (m_children == NULL) + { + if (before_node != NULL) + return false; // we have no children so we don't need to search + m_children = child; + } + else if (before_node == NULL) + { + // prepend child + child->m_parent = this; + child->m_next = m_children; + m_children = child; + return true; + } else { wxXmlNode *ch = m_children; - while (ch->m_next != before_node) ch = ch->m_next; + while (ch && ch->m_next != before_node) ch = ch->m_next; + if (!ch) + return false; // before_node not found ch->m_next = child; } child->m_parent = this; child->m_next = before_node; + return true; } bool wxXmlNode::RemoveChild(wxXmlNode *child) @@ -268,6 +298,42 @@ bool wxXmlNode::DeleteProperty(const wxString& name) } } +wxString wxXmlNode::GetNodeContent() const +{ + wxXmlNode *n = GetChildren(); + + while (n) + { + if (n->GetType() == wxXML_TEXT_NODE || + n->GetType() == wxXML_CDATA_SECTION_NODE) + return n->GetContent(); + n = n->GetNext(); + } + return wxEmptyString; +} + +int wxXmlNode::GetDepth(wxXmlNode *grandparent) const +{ + const wxXmlNode *n = this; + int ret = -1; + + do + { + ret++; + n = n->GetParent(); + if (n == grandparent) + return ret; + + } while (n); + + return wxNOT_FOUND; +} + +bool wxXmlNode::IsWhitespaceOnly() const +{ + return wxIsWhiteOnly(m_content); +} + //----------------------------------------------------------------------------- @@ -323,16 +389,20 @@ void wxXmlDocument::DoCopy(const wxXmlDocument& doc) m_root = new wxXmlNode(*doc.m_root); } -bool wxXmlDocument::Load(const wxString& filename, const wxString& encoding) +bool wxXmlDocument::Load(const wxString& filename, const wxString& encoding, int flags) { wxFileInputStream stream(filename); - return Load(stream, encoding); + if (!stream.Ok()) + return false; + return Load(stream, encoding, flags); } -bool wxXmlDocument::Save(const wxString& filename) const +bool wxXmlDocument::Save(const wxString& filename, int indentstep) const { wxFileOutputStream stream(filename); - return Save(stream); + if (!stream.Ok()) + return false; + return Save(stream, indentstep); } @@ -341,36 +411,42 @@ bool wxXmlDocument::Save(const wxString& filename) const // wxXmlDocument loading routines //----------------------------------------------------------------------------- -/* - FIXME: - - process all elements, including CDATA - */ - -// converts Expat-produced string in UTF-8 into wxString. -inline static wxString CharToString(wxMBConv *conv, +// converts Expat-produced string in UTF-8 into wxString using the specified +// conv or keep in UTF-8 if conv is NULL +static wxString CharToString(wxMBConv *conv, const char *s, size_t len = wxSTRING_MAXLEN) { #if wxUSE_UNICODE - (void)conv; + wxUnusedVar(conv); + return wxString(s, wxConvUTF8, len); -#else +#else // !wxUSE_UNICODE if ( conv ) { - size_t nLen = (len != wxSTRING_MAXLEN) ? len : - wxConvUTF8.MB2WC((wchar_t*) NULL, s, 0); + // there can be no embedded NULs in this string so we don't need the + // output length, it will be NUL-terminated + const wxWCharBuffer wbuf( + wxConvUTF8.cMB2WC(s, len == wxSTRING_MAXLEN ? wxNO_LEN : len, NULL)); - wchar_t *buf = new wchar_t[nLen+1]; - wxConvUTF8.MB2WC(buf, s, nLen); - buf[nLen] = 0; - wxString str(buf, *conv, len); - delete[] buf; - return str; + return wxString(wbuf, *conv); } - else + else // already in UTF-8, no conversion needed + { return wxString(s, len != wxSTRING_MAXLEN ? len : strlen(s)); -#endif + } +#endif // wxUSE_UNICODE/!wxUSE_UNICODE } +// returns true if the given string contains only whitespaces +bool wxIsWhiteOnly(const wxChar *buf) +{ + for (const wxChar *c = buf; *c != wxT('\0'); c++) + if (*c != wxT(' ') && *c != wxT('\t') && *c != wxT('\n') && *c != wxT('\r')) + return false; + return true; +} + + struct wxXmlParsingContext { wxMBConv *conv; @@ -379,6 +455,8 @@ struct wxXmlParsingContext wxXmlNode *lastAsText; wxString encoding; wxString version; + bool bLastCdata; + bool removeWhiteOnlyNodes; }; extern "C" { @@ -415,34 +493,53 @@ extern "C" { static void TextHnd(void *userData, const char *s, int len) { wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData; - char *buf = new char[len + 1]; - - buf[len] = '\0'; - memcpy(buf, s, (size_t)len); + wxString str = CharToString(ctx->conv, s, len); if (ctx->lastAsText) { - ctx->lastAsText->SetContent(ctx->lastAsText->GetContent() + - CharToString(ctx->conv, buf)); + if ( ctx->bLastCdata ) + { + ctx->lastAsText->SetContent(ctx->lastAsText->GetContent() + + CharToString(NULL, s, len)); + } + else + { + ctx->lastAsText->SetContent(ctx->lastAsText->GetContent() + str); + } } else { - bool whiteOnly = true; - for (char *c = buf; *c != '\0'; c++) - if (*c != ' ' && *c != '\t' && *c != '\n' && *c != '\r') - { - whiteOnly = false; - break; - } + bool whiteOnly = false; + if (ctx->removeWhiteOnlyNodes) + whiteOnly = wxIsWhiteOnly(str); + if (!whiteOnly) { - ctx->lastAsText = new wxXmlNode(wxXML_TEXT_NODE, wxT("text"), - CharToString(ctx->conv, buf)); + ctx->lastAsText = new wxXmlNode(wxXML_TEXT_NODE, wxT("text"), str); ctx->node->AddChild(ctx->lastAsText); } } +} +} - delete[] buf; +extern "C" { +static void StartCdataHnd(void *userData) +{ + wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData; + + ctx->bLastCdata = true; + + ctx->lastAsText = new wxXmlNode(wxXML_CDATA_SECTION_NODE, wxT("cdata"),wxT("")); + ctx->node->AddChild(ctx->lastAsText); +} +} + +extern "C" { +static void EndCdataHnd(void *userData) +{ + wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData; + + ctx->bLastCdata = false; } } @@ -517,7 +614,7 @@ static int UnknownEncodingHnd(void * WXUNUSED(encodingHandlerData), } } -bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding) +bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding, int flags) { #if wxUSE_UNICODE (void)encoding; @@ -538,10 +635,13 @@ bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding) if ( encoding != wxT("UTF-8") && encoding != wxT("utf-8") ) ctx.conv = new wxCSConv(encoding); #endif + ctx.removeWhiteOnlyNodes = (flags & wxXMLDOC_KEEP_WHITESPACE_NODES) == 0; + ctx.bLastCdata = false; XML_SetUserData(parser, (void*)&ctx); XML_SetElementHandler(parser, StartElementHnd, EndElementHnd); XML_SetCharacterDataHandler(parser, TextHnd); + XML_SetCdataSectionHandler(parser, StartCdataHnd, EndCdataHnd ); XML_SetCommentHandler(parser, CommentHnd); XML_SetDefaultHandler(parser, DefaultHnd); XML_SetUnknownEncodingHandler(parser, UnknownEncodingHnd, NULL); @@ -594,33 +694,42 @@ bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding) // write string to output: inline static void OutputString(wxOutputStream& stream, const wxString& str, -#if wxUSE_UNICODE - wxMBConv * WXUNUSED(convMem), -#else - wxMBConv *convMem, -#endif - wxMBConv *convFile) + wxMBConv *convMem = NULL, + wxMBConv *convFile = NULL) { - if (str.empty()) return; + if (str.empty()) + return; + #if wxUSE_UNICODE + wxUnusedVar(convMem); + const wxWX2MBbuf buf(str.mb_str(*(convFile ? convFile : &wxConvUTF8))); stream.Write((const char*)buf, strlen((const char*)buf)); -#else - if ( convFile == NULL ) - stream.Write(str.mb_str(), str.Len()); - else +#else // !wxUSE_UNICODE + if ( convFile && convMem ) { wxString str2(str.wc_str(*convMem), *convFile); stream.Write(str2.mb_str(), str2.Len()); } -#endif + else // no conversions to do + { + stream.Write(str.mb_str(), str.Len()); + } +#endif // wxUSE_UNICODE/!wxUSE_UNICODE } +// flags for OutputStringEnt() +enum +{ + XML_ESCAPE_QUOTES = 1 +}; + // Same as above, but create entities first. // Translates '<' to "<", '>' to ">" and '&' to "&" static void OutputStringEnt(wxOutputStream& stream, const wxString& str, - wxMBConv *convMem, wxMBConv *convFile, - bool escapeQuotes = false) + wxMBConv *convMem = NULL, + wxMBConv *convFile = NULL, + int flags = 0) { wxString buf; size_t i, last, len; @@ -633,24 +742,25 @@ static void OutputStringEnt(wxOutputStream& stream, const wxString& str, c = str.GetChar(i); if (c == wxT('<') || c == wxT('>') || (c == wxT('&') && str.Mid(i+1, 4) != wxT("amp;")) || - (escapeQuotes && c == wxT('"'))) + ((flags & XML_ESCAPE_QUOTES) && c == wxT('"'))) { OutputString(stream, str.Mid(last, i - last), convMem, convFile); switch (c) { case wxT('<'): - OutputString(stream, wxT("<"), NULL, NULL); + OutputString(stream, wxT("<")); break; case wxT('>'): - OutputString(stream, wxT(">"), NULL, NULL); + OutputString(stream, wxT(">")); break; case wxT('&'): - OutputString(stream, wxT("&"), NULL, NULL); + OutputString(stream, wxT("&")); break; case wxT('"'): - OutputString(stream, wxT("""), NULL, NULL); + OutputString(stream, wxT(""")); + break; + default: break; - default: break; } last = i + 1; } @@ -663,63 +773,68 @@ inline static void OutputIndentation(wxOutputStream& stream, int indent) wxString str = wxT("\n"); for (int i = 0; i < indent; i++) str << wxT(' ') << wxT(' '); - OutputString(stream, str, NULL, NULL); + OutputString(stream, str); } static void OutputNode(wxOutputStream& stream, wxXmlNode *node, int indent, - wxMBConv *convMem, wxMBConv *convFile) + wxMBConv *convMem, wxMBConv *convFile, int indentstep) { wxXmlNode *n, *prev; wxXmlProperty *prop; switch (node->GetType()) { + case wxXML_CDATA_SECTION_NODE: + OutputString( stream, wxT("GetContent() ); + OutputString( stream, wxT("]]>") ); + break; + case wxXML_TEXT_NODE: OutputStringEnt(stream, node->GetContent(), convMem, convFile); break; case wxXML_ELEMENT_NODE: - OutputString(stream, wxT("<"), NULL, NULL); - OutputString(stream, node->GetName(), NULL, NULL); + OutputString(stream, wxT("<")); + OutputString(stream, node->GetName()); prop = node->GetProperties(); while (prop) { - OutputString(stream, wxT(" ") + prop->GetName() + wxT("=\""), - NULL, NULL); + OutputString(stream, wxT(" ") + prop->GetName() + wxT("=\"")); OutputStringEnt(stream, prop->GetValue(), convMem, convFile, - true/*escapeQuotes*/); - OutputString(stream, wxT("\""), NULL, NULL); + XML_ESCAPE_QUOTES); + OutputString(stream, wxT("\"")); prop = prop->GetNext(); } if (node->GetChildren()) { - OutputString(stream, wxT(">"), NULL, NULL); + OutputString(stream, wxT(">")); prev = NULL; n = node->GetChildren(); while (n) { - if (n && n->GetType() != wxXML_TEXT_NODE) - OutputIndentation(stream, indent + 1); - OutputNode(stream, n, indent + 1, convMem, convFile); + if (indentstep >= 0 && n && n->GetType() != wxXML_TEXT_NODE) + OutputIndentation(stream, indent + indentstep); + OutputNode(stream, n, indent + indentstep, convMem, convFile, indentstep); prev = n; n = n->GetNext(); } - if (prev && prev->GetType() != wxXML_TEXT_NODE) + if (indentstep >= 0 && prev && prev->GetType() != wxXML_TEXT_NODE) OutputIndentation(stream, indent); - OutputString(stream, wxT("GetName(), NULL, NULL); - OutputString(stream, wxT(">"), NULL, NULL); + OutputString(stream, wxT("GetName()); + OutputString(stream, wxT(">")); } else - OutputString(stream, wxT("/>"), NULL, NULL); + OutputString(stream, wxT("/>")); break; case wxXML_COMMENT_NODE: - OutputString(stream, wxT(""), NULL, NULL); + OutputString(stream, wxT("-->")); break; default: @@ -727,7 +842,7 @@ static void OutputNode(wxOutputStream& stream, wxXmlNode *node, int indent, } } -bool wxXmlDocument::Save(wxOutputStream& stream) const +bool wxXmlDocument::Save(wxOutputStream& stream, int indentstep) const { if ( !IsOk() ) return false; @@ -749,10 +864,10 @@ bool wxXmlDocument::Save(wxOutputStream& stream) const s.Printf(wxT("\n"), GetVersion().c_str(), GetFileEncoding().c_str()); - OutputString(stream, s, NULL, NULL); + OutputString(stream, s); - OutputNode(stream, GetRoot(), 0, convMem, convFile); - OutputString(stream, wxT("\n"), NULL, NULL); + OutputNode(stream, GetRoot(), 0, convMem, convFile, indentstep); + OutputString(stream, wxT("\n")); if ( convFile ) delete convFile;