last change was wrong, fix wxUSE_MDI==0 build without completely disabling this file...

[wxWidgets.git] / src / xml / xml.cpp

diff --git a/src/xml/xml.cpp b/src/xml/xml.cpp
index d53297f0aec7badc27109bbf425ff9211e9aa598..61617537a9d5fbc1f1151bbbf6faecb4c999db93 100644 (file)
--- a/src/xml/xml.cpp
+++ b/src/xml/xml.cpp
@@ -39,6 +39,9 @@ WX_CHECK_BUILD_OPTIONS("wxXML")
 IMPLEMENT_CLASS(wxXmlDocument, wxObject)
 
 
 IMPLEMENT_CLASS(wxXmlDocument, wxObject)
 
 

+// a private utility used by wxXML
+static bool wxIsWhiteOnly(const wxChar *buf);
+

 
 //-----------------------------------------------------------------------------
 //  wxXmlNode
 
 //-----------------------------------------------------------------------------
 //  wxXmlNode


@@ -178,21 +181,40 @@ void wxXmlNode::AddChild(wxXmlNode *child)
     child->m_parent = this;
 }
 
     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;
 
     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;
     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;
         ch->m_next = child;
     }
 
     child->m_parent = this;
     child->m_next = before_node;

+    return true;

 }
 
 bool wxXmlNode::RemoveChild(wxXmlNode *child)
 }
 
 bool wxXmlNode::RemoveChild(wxXmlNode *child)


@@ -290,6 +312,28 @@ wxString wxXmlNode::GetNodeContent() const
     return wxEmptyString;
 }
 
     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);
+}
+

 
 
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------


@@ -342,23 +386,27 @@ void wxXmlDocument::DoCopy(const wxXmlDocument& doc)
     m_encoding = doc.m_encoding;
 #endif
     m_fileEncoding = doc.m_fileEncoding;
     m_encoding = doc.m_encoding;
 #endif
     m_fileEncoding = doc.m_fileEncoding;

-    m_root = new wxXmlNode(*doc.m_root);
+
+    if (doc.m_root)
+        m_root = new wxXmlNode(*doc.m_root);
+    else
+        m_root = NULL;

 }
 
 }
 

-bool wxXmlDocument::Load(const wxString& filename, const wxString& encoding)
+bool wxXmlDocument::Load(const wxString& filename, const wxString& encoding, int flags)

 {
     wxFileInputStream stream(filename);
     if (!stream.Ok())
         return false;
 {
     wxFileInputStream stream(filename);
     if (!stream.Ok())
         return false;

-    return Load(stream, encoding);
+    return Load(stream, encoding, flags);

 }
 
 }
 

-bool wxXmlDocument::Save(const wxString& filename) const
+bool wxXmlDocument::Save(const wxString& filename, int indentstep) const

 {
     wxFileOutputStream stream(filename);
     if (!stream.Ok())
         return false;
 {
     wxFileOutputStream stream(filename);
     if (!stream.Ok())
         return false;

-    return Save(stream);
+    return Save(stream, indentstep);

 }
 
 
 }
 
 


@@ -367,15 +415,10 @@ bool wxXmlDocument::Save(const wxString& filename) const
 //  wxXmlDocument loading routines
 //-----------------------------------------------------------------------------
 
 //  wxXmlDocument loading routines
 //-----------------------------------------------------------------------------
 

-/*
-    FIXME:
-       - process all elements, including CDATA
- */
-

 // 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,
 // 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)
+                                    const char *s, size_t len = wxString::npos)

 {
 #if wxUSE_UNICODE
     wxUnusedVar(conv);
 {
 #if wxUSE_UNICODE
     wxUnusedVar(conv);


@@ -387,17 +430,27 @@ static wxString CharToString(wxMBConv *conv,
         // 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(
         // 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));
+            wxConvUTF8.cMB2WC(s, len == wxString::npos ? wxNO_LEN : len, NULL));

 
         return wxString(wbuf, *conv);
     }
     else // already in UTF-8, no conversion needed
     {
 
         return wxString(wbuf, *conv);
     }
     else // already in UTF-8, no conversion needed
     {

-        return wxString(s, len != wxSTRING_MAXLEN ? len : strlen(s));
+        return wxString(s, len != wxString::npos ? len : strlen(s));

     }
 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 }
 
     }
 #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;
 struct wxXmlParsingContext
 {
     wxMBConv  *conv;


@@ -406,7 +459,8 @@ struct wxXmlParsingContext
     wxXmlNode *lastAsText;
     wxString   encoding;
     wxString   version;
     wxXmlNode *lastAsText;
     wxString   encoding;
     wxString   version;

-       bool    bLastCdata;
+    bool       bLastCdata;
+    bool       removeWhiteOnlyNodes;

 };
 
 extern "C" {
 };
 
 extern "C" {


@@ -443,42 +497,32 @@ extern "C" {
 static void TextHnd(void *userData, const char *s, int len)
 {
     wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData;
 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)
     {
 
     if (ctx->lastAsText)
     {

-               if ( ctx->bLastCdata )
-               {
-                       ctx->lastAsText->SetContent(ctx->lastAsText->GetContent() +
-                                    CharToString(NULL, buf));
-               }
-               else
-               {
-                       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
     {
     }
     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)
         {
         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);
         }
     }
             ctx->node->AddChild(ctx->lastAsText);
         }
     }

-
-    delete[] buf;

 }
 }
 
 }
 }
 


@@ -487,10 +531,10 @@ static void StartCdataHnd(void *userData)
 {
     wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData;
 
 {
     wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData;
 

-       ctx->bLastCdata = true;
-   
-       ctx->lastAsText = new wxXmlNode(wxXML_CDATA_SECTION_NODE, wxT("cdata"),wxT(""));
-    ctx->node->AddChild(ctx->lastAsText);         
+    ctx->bLastCdata = true;
+
+    ctx->lastAsText = new wxXmlNode(wxXML_CDATA_SECTION_NODE, wxT("cdata"),wxT(""));
+    ctx->node->AddChild(ctx->lastAsText);

 }
 }
 
 }
 }
 


@@ -499,7 +543,7 @@ static void EndCdataHnd(void *userData)
 {
     wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData;
 
 {
     wxXmlParsingContext *ctx = (wxXmlParsingContext*)userData;
 

-       ctx->bLastCdata = false;      
+    ctx->bLastCdata = false;

 }
 }
 
 }
 }
 


@@ -574,7 +618,7 @@ 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;
 {
 #if wxUSE_UNICODE
     (void)encoding;


@@ -592,15 +636,16 @@ bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding)
     ctx.encoding = wxT("UTF-8"); // default in absence of encoding=""
     ctx.conv = NULL;
 #if !wxUSE_UNICODE
     ctx.encoding = wxT("UTF-8"); // default in absence of encoding=""
     ctx.conv = NULL;
 #if !wxUSE_UNICODE

-    if ( encoding != wxT("UTF-8") && encoding != wxT("utf-8") )
+    if ( encoding.CmpNoCase(wxT("UTF-8")) != 0 )

         ctx.conv = new wxCSConv(encoding);
 #endif
         ctx.conv = new wxCSConv(encoding);
 #endif

-       ctx.bLastCdata = false;
+    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_SetUserData(parser, (void*)&ctx);
     XML_SetElementHandler(parser, StartElementHnd, EndElementHnd);
     XML_SetCharacterDataHandler(parser, TextHnd);

-       XML_SetCdataSectionHandler(parser, StartCdataHnd, EndCdataHnd );
+    XML_SetCdataSectionHandler(parser, StartCdataHnd, EndCdataHnd );

     XML_SetCommentHandler(parser, CommentHnd);
     XML_SetDefaultHandler(parser, DefaultHnd);
     XML_SetUnknownEncodingHandler(parser, UnknownEncodingHnd, NULL);
     XML_SetCommentHandler(parser, CommentHnd);
     XML_SetDefaultHandler(parser, DefaultHnd);
     XML_SetUnknownEncodingHandler(parser, UnknownEncodingHnd, NULL);


@@ -736,18 +781,18 @@ inline static void OutputIndentation(wxOutputStream& stream, int indent)
 }
 
 static void OutputNode(wxOutputStream& stream, wxXmlNode *node, int indent,
 }
 
 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())
     {
 {
     wxXmlNode *n, *prev;
     wxXmlProperty *prop;
 
     switch (node->GetType())
     {

-               case wxXML_CDATA_SECTION_NODE:
-                       OutputString( stream, wxT("<![CDATA["));
-                       OutputString( stream, node->GetContent() );
-                       OutputString( stream, wxT("]]>") );
-                       break;
+        case wxXML_CDATA_SECTION_NODE:
+            OutputString( stream, wxT("<![CDATA["));
+            OutputString( stream, node->GetContent() );
+            OutputString( stream, wxT("]]>") );
+            break;

 
         case wxXML_TEXT_NODE:
             OutputStringEnt(stream, node->GetContent(), convMem, convFile);
 
         case wxXML_TEXT_NODE:
             OutputStringEnt(stream, node->GetContent(), convMem, convFile);


@@ -774,13 +819,13 @@ static void OutputNode(wxOutputStream& stream, wxXmlNode *node, int indent,
                 n = node->GetChildren();
                 while (n)
                 {
                 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();
                 }
                     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("</"));
                 OutputString(stream, node->GetName());
                     OutputIndentation(stream, indent);
                 OutputString(stream, wxT("</"));
                 OutputString(stream, node->GetName());


@@ -801,37 +846,41 @@ 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;
 
     wxString s;
 
 {
     if ( !IsOk() )
         return false;
 
     wxString s;
 

-    wxMBConv *convMem = NULL;
+    wxMBConv *convMem = NULL,
+             *convFile;

 
 #if wxUSE_UNICODE
 
 #if wxUSE_UNICODE

-    wxMBConv *convFile = new wxCSConv(GetFileEncoding());
+    convFile = new wxCSConv(GetFileEncoding());
+    convMem = NULL;

 #else
 #else

-    wxMBConv *convFile = NULL;
-    if ( GetFileEncoding() != GetEncoding() )
+    if ( GetFileEncoding().CmpNoCase(GetEncoding()) != 0 )

     {
         convFile = new wxCSConv(GetFileEncoding());
         convMem = new wxCSConv(GetEncoding());
     }
     {
         convFile = new wxCSConv(GetFileEncoding());
         convMem = new wxCSConv(GetEncoding());
     }

+    else // file and in-memory encodings are the same, no conversion needed
+    {
+        convFile =
+        convMem = NULL;
+    }

 #endif
 
     s.Printf(wxT("<?xml version=\"%s\" encoding=\"%s\"?>\n"),
              GetVersion().c_str(), GetFileEncoding().c_str());
     OutputString(stream, s);
 
 #endif
 
     s.Printf(wxT("<?xml version=\"%s\" encoding=\"%s\"?>\n"),
              GetVersion().c_str(), GetFileEncoding().c_str());
     OutputString(stream, s);
 

-    OutputNode(stream, GetRoot(), 0, convMem, convFile);
+    OutputNode(stream, GetRoot(), 0, convMem, convFile, indentstep);

     OutputString(stream, wxT("\n"));
 
     OutputString(stream, wxT("\n"));
 

-    if ( convFile )
-        delete convFile;
-    if ( convMem )
-        delete convMem;
+    delete convFile;
+    delete convMem;

 
     return true;
 }
 
     return true;
 }