--- /dev/null
+//####COPYRIGHTBEGIN####
+//
+// ----------------------------------------------------------------------------
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
+//
+// This program is part of the eCos host tools.
+//
+// This program is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 2 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// ----------------------------------------------------------------------------
+//
+//####COPYRIGHTEND####
+// htmlparser.cpp :
+//
+//===========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): julians
+// Contact(s): julians
+// Date: 2001/04/04
+// Version: $Id$
+// Purpose:
+// Description: HTML parser/HTML Help file generator
+// Requires:
+// Provides:
+// See also:
+// Known bugs:
+// Usage:
+//
+//####DESCRIPTIONEND####
+//
+//===========================================================================
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+#ifdef __GNUG__
+#pragma implementation "htmlparser.h"
+#endif
+
+// Includes other headers for precompiled compilation
+#include "ecpch.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#include "wx/textfile.h"
+#include "wx/wfstream.h"
+
+#include "ecutils.h"
+#include "htmlparser.h"
+
+/*
+ * wxSimpleHtmlAttribute
+ * Representation of an attribute
+ */
+
+wxSimpleHtmlParser::wxSimpleHtmlParser()
+{
+ m_topLevel = NULL;
+ m_pos = 0;
+}
+
+
+wxSimpleHtmlParser::~wxSimpleHtmlParser()
+{
+ Clear();
+}
+
+bool wxSimpleHtmlParser::ParseFile(const wxString& filename)
+{
+ wxTextFile textFile;
+
+ if (textFile.Open(filename))
+ {
+ wxString text;
+ wxString line;
+ int i;
+ int count = textFile.GetLineCount();
+ for (i = 0; i < count; i++)
+ {
+ if (i == 0)
+ line = textFile.GetFirstLine();
+ else
+ line = textFile.GetNextLine();
+
+ text += line;
+ if (i != (count - 1))
+ text += wxT("\n");
+ }
+
+#if 0
+ for ( line = textFile.GetFirstLine(); !textFile.Eof(); line = textFile.GetNextLine() )
+ {
+ text += line;
+ if (!textFile.Eof())
+ text += wxT("\n");
+ }
+#endif
+
+ return ParseString(text);
+ }
+ else
+ return FALSE;
+}
+
+bool wxSimpleHtmlParser::ParseString(const wxString& str)
+{
+ Clear();
+
+ m_pos = 0;
+ m_text = str;
+ m_length = str.Length();
+
+ m_topLevel = new wxSimpleHtmlTag(wxT("TOPLEVEL"), wxSimpleHtmlTag_TopLevel);
+
+ return ParseHtml(m_topLevel);
+}
+
+// Main recursive parsing function
+bool wxSimpleHtmlParser::ParseHtml(wxSimpleHtmlTag* parent)
+{
+ while (!Eof())
+ {
+ EatWhitespace();
+ if (IsComment())
+ {
+ ParseComment();
+ }
+ else if (IsDirective())
+ {
+ wxSimpleHtmlTag* tag = ParseDirective();
+ if (tag)
+ parent->AppendTag(tag);
+ }
+ else if (IsTagClose())
+ {
+ wxSimpleHtmlTag* tag = ParseTagClose();
+ if (tag)
+ parent->AppendTag(tag);
+ }
+ else if (IsTagStartBracket(GetChar(m_pos)))
+ {
+ wxSimpleHtmlTag* tag = ParseTagHeader();
+ if (tag)
+ parent->AppendTag(tag);
+ }
+ else
+ {
+ // Just a text string
+ wxString text;
+ ParseText(text);
+
+ wxSimpleHtmlTag* tag = new wxSimpleHtmlTag(wxT("TEXT"), wxSimpleHtmlTag_Text);
+ tag->SetText(text);
+ parent->AppendTag(tag);
+ }
+ }
+ return TRUE;
+}
+
+// Plain text, up until an angled bracket
+bool wxSimpleHtmlParser::ParseText(wxString& text)
+{
+ while (!Eof() && GetChar(m_pos) != wxT('<'))
+ {
+ text += GetChar(m_pos);
+ m_pos ++;
+ }
+ return TRUE;
+}
+
+wxSimpleHtmlTag* wxSimpleHtmlParser::ParseTagHeader()
+{
+ if (IsTagStartBracket(GetChar(m_pos)))
+ {
+ m_pos ++;
+ EatWhitespace();
+
+ wxString word;
+ ReadWord(word, TRUE);
+
+ EatWhitespace();
+
+ wxSimpleHtmlTag* tag = new wxSimpleHtmlTag(word, wxSimpleHtmlTag_Open);
+
+ ParseAttributes(tag);
+
+ EatWhitespace();
+
+ if (IsTagEndBracket(GetChar(m_pos)))
+ m_pos ++;
+
+ return tag;
+ }
+ else
+ return NULL;
+}
+
+wxSimpleHtmlTag* wxSimpleHtmlParser::ParseTagClose()
+{
+ Matches(wxT("</"), TRUE);
+
+ EatWhitespace();
+
+ wxString word;
+ ReadWord(word, TRUE);
+
+ EatWhitespace();
+ m_pos ++;
+
+ wxSimpleHtmlTag* tag = new wxSimpleHtmlTag(word, wxSimpleHtmlTag_Close);
+ return tag;
+}
+
+bool wxSimpleHtmlParser::ParseAttributes(wxSimpleHtmlTag* tag)
+{
+ // Parse attributes of a tag header until we reach >
+ while (!IsTagEndBracket(GetChar(m_pos)) && !Eof())
+ {
+ EatWhitespace();
+
+ wxString attrName, attrValue;
+
+ if (IsString())
+ {
+ ReadString(attrName, TRUE);
+ tag->AppendAttribute(attrName, wxEmptyString);
+ }
+ else if (IsNumeric(GetChar(m_pos)))
+ {
+ ReadNumber(attrName, TRUE);
+ tag->AppendAttribute(attrName, wxEmptyString);
+ }
+ else
+ {
+ // Try to read an attribute name/value pair, or at least a name
+ // without the value
+ ReadLiteral(attrName, TRUE);
+ EatWhitespace();
+
+ if (GetChar(m_pos) == wxT('='))
+ {
+ m_pos ++;
+ EatWhitespace();
+
+ if (IsString())
+ ReadString(attrValue, TRUE);
+ else if (!Eof() && !IsTagEndBracket(GetChar(m_pos)))
+ ReadLiteral(attrValue, TRUE);
+ }
+ if (!attrName.IsEmpty())
+ tag->AppendAttribute(attrName, attrValue);
+ }
+ }
+ return TRUE;
+}
+
+// e.g. <!DOCTYPE ....>
+wxSimpleHtmlTag* wxSimpleHtmlParser::ParseDirective()
+{
+ Matches(wxT("<!"), TRUE);
+
+ EatWhitespace();
+
+ wxString word;
+ ReadWord(word, TRUE);
+
+ EatWhitespace();
+
+ wxSimpleHtmlTag* tag = new wxSimpleHtmlTag(word, wxSimpleHtmlTag_Directive);
+
+ ParseAttributes(tag);
+
+ EatWhitespace();
+
+ if (IsTagEndBracket(GetChar(m_pos)))
+ m_pos ++;
+
+ return tag;
+}
+
+bool wxSimpleHtmlParser::ParseComment()
+{
+ // Eat the comment tag start
+ Matches(wxT("<!--"), TRUE);
+
+ while (!Eof() && !Matches(wxT("-->"), TRUE))
+ {
+ m_pos ++;
+ }
+
+ return TRUE;
+}
+
+bool wxSimpleHtmlParser::EatWhitespace()
+{
+ while (!Eof() && IsWhitespace(GetChar(m_pos)))
+ m_pos ++;
+ return TRUE;
+}
+
+bool wxSimpleHtmlParser::EatWhitespace(int& pos)
+{
+ while (!Eof(pos) && IsWhitespace(GetChar(pos)))
+ pos ++;
+ return TRUE;
+}
+
+bool wxSimpleHtmlParser::ReadString(wxString& str, bool eatIt)
+{
+ int pos = m_pos;
+ if (GetChar(pos) == (int) '"')
+ {
+ pos ++;
+ while (!Eof(pos) && GetChar(pos) != (int) '"')
+ {
+ // TODO: how are quotes escaped in HTML?
+ str += (wxChar) GetChar(pos);
+ pos ++;
+ }
+ if (GetChar(pos) == (int) '"')
+ pos ++;
+ if (eatIt)
+ m_pos = pos;
+ return TRUE;
+ }
+ else
+ return FALSE;
+}
+
+bool wxSimpleHtmlParser::ReadWord(wxString& str, bool eatIt)
+{
+ int pos = m_pos;
+
+ if (!IsAlpha(GetChar(pos)))
+ return FALSE;
+
+ str += (wxChar) GetChar(pos) ;
+ pos ++;
+
+ while (!Eof(pos) && IsWordChar(GetChar(pos)))
+ {
+ str += (wxChar) GetChar(pos);
+ pos ++;
+ }
+ if (eatIt)
+ m_pos = pos;
+ return TRUE;
+}
+
+bool wxSimpleHtmlParser::ReadNumber(wxString& str, bool eatIt)
+{
+ int pos = m_pos;
+
+ if (!IsNumeric(GetChar(pos)))
+ return FALSE;
+
+ str += (wxChar) GetChar(pos) ;
+ pos ++;
+
+ while (!Eof(pos) && IsNumeric(GetChar(pos)))
+ {
+ str += (wxChar) GetChar(pos);
+ pos ++;
+ }
+ if (eatIt)
+ m_pos = pos;
+ return TRUE;
+}
+
+// Could be number, string, whatever, but read up until whitespace or end of tag (but not a quoted string)
+bool wxSimpleHtmlParser::ReadLiteral(wxString& str, bool eatIt)
+{
+ int pos = m_pos;
+
+ while (!Eof(pos) && !IsWhitespace(GetChar(pos)) && !IsTagEndBracket(GetChar(pos)) && GetChar(pos) != wxT('='))
+ {
+ str += GetChar(pos);
+ pos ++;
+ }
+ if (eatIt)
+ m_pos = pos;
+ return TRUE;
+}
+
+bool wxSimpleHtmlParser::IsTagClose()
+{
+ return Matches(wxT("</"));
+}
+
+bool wxSimpleHtmlParser::IsComment()
+{
+ return Matches(wxT("<!--"));
+}
+
+bool wxSimpleHtmlParser::IsDirective()
+{
+ return Matches(wxT("<!"));
+}
+
+bool wxSimpleHtmlParser::IsString()
+{
+ return (GetChar(m_pos) == (int) '"') ;
+}
+
+bool wxSimpleHtmlParser::IsWord()
+{
+ return (IsAlpha(GetChar(m_pos)));
+}
+
+bool wxSimpleHtmlParser::IsTagStartBracket(int ch)
+{
+ return (ch == wxT('<'));
+}
+
+bool wxSimpleHtmlParser::IsTagEndBracket(int ch)
+{
+ return (ch == wxT('>'));
+}
+
+bool wxSimpleHtmlParser::IsWhitespace(int ch)
+{
+ return ((ch == 13) || (ch == 10) || (ch == 32) || (ch == (int) '\t')) ;
+}
+
+bool wxSimpleHtmlParser::IsAlpha(int ch)
+{
+ return (wxIsalpha((wxChar) ch) != 0);
+}
+
+bool wxSimpleHtmlParser::IsWordChar(int ch)
+{
+ return (wxIsalpha((wxChar) ch) != 0 || ch == wxT('-') || ch == wxT('_') || IsNumeric(ch));
+}
+
+bool wxSimpleHtmlParser::IsNumeric(int ch)
+{
+ return (wxIsdigit((wxChar) ch) != 0 || ch == wxT('-') || ch == wxT('.')) ;
+}
+
+// Matches this string (case insensitive)
+bool wxSimpleHtmlParser::Matches(const wxString& tok, bool eatIt)
+{
+ wxString text(m_text.Mid(m_pos, tok.Length()));
+ bool success = (text.CmpNoCase(tok) == 0) ;
+ if (success && eatIt)
+ {
+ m_pos += tok.Length();
+ }
+ return success;
+}
+
+// Safe way of getting a character
+int wxSimpleHtmlParser::GetChar(size_t i) const
+{
+ if (i >= m_length)
+ return -1;
+ return m_text[i];
+}
+
+void wxSimpleHtmlParser::Clear()
+{
+ if (m_topLevel)
+ delete m_topLevel;
+ m_topLevel = NULL;
+ m_text = wxEmptyString;
+ m_pos = 0;
+ m_length = 0;
+}
+
+// Write this file
+void wxSimpleHtmlParser::Write(wxOutputStream& stream)
+{
+ if (m_topLevel)
+ m_topLevel->Write(stream);
+}
+
+bool wxSimpleHtmlParser::WriteFile(wxString& filename)
+{
+ wxFileOutputStream fstream(filename);
+ if (fstream.Ok())
+ {
+ Write(fstream);
+ return TRUE;
+ }
+ else
+ return FALSE;
+}
+
+/*
+ * wxSimpleHtmlTag
+ * Representation of a tag or chunk of text
+ */
+
+wxSimpleHtmlTag::wxSimpleHtmlTag(const wxString& tagName, int tagType)
+{
+ m_name = tagName;
+ m_type = tagType;
+ m_attributes = NULL;
+ m_children = NULL;
+ m_parent = NULL;
+ m_next = NULL;
+}
+
+wxSimpleHtmlTag::~wxSimpleHtmlTag()
+{
+ ClearAttributes();
+ ClearChildren();
+}
+
+//// Operations
+void wxSimpleHtmlTag::ClearAttributes()
+{
+ if (m_attributes)
+ {
+ wxSimpleHtmlAttribute* attr = m_attributes;
+ while (attr)
+ {
+ wxSimpleHtmlAttribute* next = attr->m_next;
+
+ attr->m_next = NULL;
+ delete attr;
+ attr = next;
+ }
+ m_attributes = NULL;
+ }
+}
+
+wxSimpleHtmlAttribute* wxSimpleHtmlTag::FindAttribute(const wxString& name) const
+{
+ wxSimpleHtmlAttribute* attr = m_attributes;
+ while (attr)
+ {
+ if (attr->GetName().CmpNoCase(name) == 0)
+ {
+ return attr;
+ }
+ attr = attr->m_next;
+ }
+ return NULL;
+}
+
+void wxSimpleHtmlTag::AppendAttribute(const wxString& name, const wxString& value)
+{
+ wxSimpleHtmlAttribute* attr = new wxSimpleHtmlAttribute(name, value);
+ if (m_attributes)
+ {
+ // Find tail
+ wxSimpleHtmlAttribute* last = m_attributes;
+ while (last->m_next)
+ last = last->m_next;
+
+ last->m_next = attr;
+ }
+ else
+ m_attributes = attr;
+}
+
+void wxSimpleHtmlTag::ClearChildren()
+{
+ if (m_children)
+ {
+ wxSimpleHtmlTag* child = m_children;
+ while (child)
+ {
+ wxSimpleHtmlTag* next = child->m_next;
+
+ child->m_next = NULL;
+ delete child;
+ child = next;
+ }
+ m_children = NULL;
+ }
+}
+
+void wxSimpleHtmlTag::AppendTag(wxSimpleHtmlTag* tag)
+{
+ if (m_children)
+ {
+ // Find tail
+ wxSimpleHtmlTag* last = m_children;
+ while (last->m_next)
+ last = last->m_next;
+
+ last->m_next = tag;
+ tag->m_parent = this;
+ }
+ else
+ m_children = tag;
+}
+
+// Gets the text from this tag and its descendants
+wxString wxSimpleHtmlTag::GetTagText()
+{
+ wxString text;
+ if (m_children)
+ {
+ wxSimpleHtmlTag* tag = m_children;
+ while (tag)
+ {
+ text += tag->GetTagText();
+ tag = tag->m_next;
+ }
+ return text;
+ }
+ else if (GetType() == wxSimpleHtmlTag_Text)
+ return GetText();
+ else
+ return wxEmptyString;
+}
+
+int wxSimpleHtmlTag::GetAttributeCount() const
+{
+ int count = 0;
+ wxSimpleHtmlAttribute* attr = m_attributes;
+ while (attr)
+ {
+ count ++;
+ attr = attr->m_next;
+ }
+ return count;
+}
+
+wxSimpleHtmlAttribute* wxSimpleHtmlTag::GetAttribute(int i) const
+{
+ int count = 0;
+ wxSimpleHtmlAttribute* attr = m_attributes;
+ while (attr)
+ {
+ if (count == i)
+ return attr;
+ count ++;
+ attr = attr->m_next;
+ }
+ return NULL;
+}
+
+int wxSimpleHtmlTag::GetChildCount() const
+{
+ int count = 0;
+ wxSimpleHtmlTag* tag = m_children;
+ while (tag)
+ {
+ count ++;
+ tag = tag->m_next;
+ }
+ return count;
+}
+
+bool wxSimpleHtmlTag::HasAttribute(const wxString& name, const wxString& value) const
+{
+ wxSimpleHtmlAttribute* attr = FindAttribute(name);
+
+ return (attr && (attr->GetValue().CmpNoCase(value) == 0)) ;
+}
+
+bool wxSimpleHtmlTag::HasAttribute(const wxString& name) const
+{
+ return FindAttribute(name) != NULL ;
+}
+
+bool wxSimpleHtmlTag::GetAttributeValue(wxString& value, const wxString& attrName)
+{
+ wxSimpleHtmlAttribute* attr = FindAttribute(attrName);
+ if (attr)
+ {
+ value = attr->GetValue();
+ return TRUE;
+ }
+ else
+ return FALSE;
+}
+
+// Search forward from this tag until we find a tag with this name & attribute
+wxSimpleHtmlTag* wxSimpleHtmlTag::FindTag(const wxString& tagName, const wxString& attrName)
+{
+ wxSimpleHtmlTag* tag = m_next;
+ while (tag)
+ {
+ if (tag->NameIs(tagName) && tag->FindAttribute(attrName))
+ return tag;
+
+ tag = tag->m_next;
+ }
+ return NULL;
+}
+
+bool wxSimpleHtmlTag::FindTextUntilTagClose(wxString& text, const wxString& tagName)
+{
+ wxSimpleHtmlTag* tag = this;
+ while (tag)
+ {
+ if (tag->GetType() == wxSimpleHtmlTag_Close && tag->NameIs(tagName))
+ return TRUE;
+
+ if (tag->GetType() == wxSimpleHtmlTag_Text)
+ text += tag->GetText();
+
+ tag = tag->m_next;
+ }
+ return TRUE;
+}
+
+
+wxSimpleHtmlTag* wxSimpleHtmlTag::GetChild(int i) const
+{
+ int count = 0;
+ wxSimpleHtmlTag* tag = m_children;
+ while (tag)
+ {
+ if (count == i)
+ return tag;
+
+ count ++;
+ tag = tag->m_next;
+ }
+ return NULL;
+}
+
+void wxSimpleHtmlTag::Write(wxOutputStream& stream)
+{
+ switch (GetType())
+ {
+ case wxSimpleHtmlTag_Text:
+ {
+ stream << m_text;
+ break;
+ }
+ case wxSimpleHtmlTag_Open:
+ {
+ stream << "<" << m_name;
+ if (GetAttributeCount() > 0)
+ stream << " ";
+ int i;
+ for (i = 0; i < GetAttributeCount(); i++)
+ {
+ wxSimpleHtmlAttribute* attr = GetAttribute(i);
+ attr->Write(stream);
+ if (i < GetAttributeCount() - 1)
+ stream << " ";
+ }
+ stream << ">\n";
+ break;
+ }
+ case wxSimpleHtmlTag_Directive:
+ {
+ stream << "<!" << m_name << " ";
+ int i;
+ for (i = 0; i < GetAttributeCount(); i++)
+ {
+ wxSimpleHtmlAttribute* attr = GetAttribute(i);
+ attr->Write(stream);
+ if (i < GetAttributeCount() - 1)
+ stream << " ";
+ }
+ stream << ">\n";
+ break;
+ }
+ case wxSimpleHtmlTag_Close:
+ {
+ stream << "</" << m_name << ">\n";
+ break;
+ }
+ default:
+ {
+ break;
+ }
+ }
+ wxSimpleHtmlTag* tag = m_children;
+ while (tag)
+ {
+ tag->Write(stream);
+ tag = tag->m_next;
+ }
+
+}
+
+void wxSimpleHtmlAttribute::Write(wxOutputStream& stream)
+{
+ if (m_value.IsEmpty())
+ stream << m_name;
+ else
+ {
+ stream << m_name;
+ stream << "=\"";
+ stream << m_value;
+ stream << "\"";
+ }
+}
projects / karo-tx-redboot.git / blobdiff