/////////////////////////////////////////////////////////////////////////////
-// Name: xml.cpp
+// Name: src/xml/xml.cpp
// Purpose: wxXmlDocument - XML parser & data holder class
// Author: Vaclav Slavik
// Created: 2000/03/05
#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
//-----------------------------------------------------------------------------
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)
}
}
+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);
+}
+
//-----------------------------------------------------------------------------
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);
}
// 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;
wxXmlNode *lastAsText;
wxString encoding;
wxString version;
+ bool bLastCdata;
+ bool removeWhiteOnlyNodes;
};
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;
}
}
}
}
-bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding)
+bool wxXmlDocument::Load(wxInputStream& stream, const wxString& encoding, int flags)
{
#if wxUSE_UNICODE
(void)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);
// 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;
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;
}
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("<![CDATA["));
+ OutputString( stream, node->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("</"), NULL, NULL);
- OutputString(stream, node->GetName(), NULL, NULL);
- OutputString(stream, wxT(">"), NULL, NULL);
+ OutputString(stream, wxT("</"));
+ OutputString(stream, node->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("<!--"));
OutputString(stream, node->GetContent(), convMem, convFile);
- OutputString(stream, wxT("-->"), NULL, NULL);
+ OutputString(stream, wxT("-->"));
break;
default:
}
}
-bool wxXmlDocument::Save(wxOutputStream& stream) const
+bool wxXmlDocument::Save(wxOutputStream& stream, int indentstep) const
{
if ( !IsOk() )
return false;
s.Printf(wxT("<?xml version=\"%s\" encoding=\"%s\"?>\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;
projects / wxWidgets.git / blobdiff