mirror of
https://github.com/reactos/reactos.git
synced 2024-10-31 03:48:17 +00:00
594 lines
18 KiB
C#
594 lines
18 KiB
C#
using System;
|
|
using System.Collections;
|
|
using System.Text;
|
|
using System.Text.RegularExpressions;
|
|
|
|
namespace HtmlHelp.ChmDecoding
|
|
{
|
|
/// <summary>
|
|
/// The class <c>HHCParser</c> implements a parser for HHC contents files.
|
|
/// </summary>
|
|
internal sealed class HHCParser
|
|
{
|
|
/// <summary>
|
|
/// regular expressions for replacing the sitemap boundary tags
|
|
/// </summary>
|
|
private static string RE_ULOpening = @"\<ul\>"; // will be replaced by a '(' for nested parsing
|
|
private static string RE_ULClosing = @"\</ul\>"; // will be replaced by a ')' for nested parsing
|
|
|
|
/// <summary>
|
|
/// Matching ul-tags
|
|
/// </summary>
|
|
private static string RE_ULBoundaries = @"\<ul\>(?<innerText>.*)\</ul\>";
|
|
/// <summary>
|
|
/// Matching the nested tree structure.
|
|
/// </summary>
|
|
private static string RE_NestedBoundaries = @"\( (?> [^()]+ | \( (?<DEPTH>) | \) (?<-DEPTH>) )* (?(DEPTH)(?!)) \)";
|
|
/// <summary>
|
|
/// Matching object-tags
|
|
/// </summary>
|
|
private static string RE_ObjectBoundaries = @"\<object(?<innerText>.*?)\</object\>";
|
|
/// <summary>
|
|
/// Matching param tags
|
|
/// </summary>
|
|
private static string RE_ParamBoundaries = @"\<param(?<innerText>.*?)\>";
|
|
/// <summary>
|
|
/// Extracting tag attributes
|
|
/// </summary>
|
|
private const string RE_QuoteAttributes = @"( |\t)*(?<attributeName>[\-a-zA-Z0-9]*)( |\t)*=( |\t)*(?<attributeTD>[\""\'])?(?<attributeValue>.*?(?(attributeTD)\k<attributeTD>|([\s>]|.$)))";
|
|
|
|
/// <summary>
|
|
/// private regular expressionobjects
|
|
/// </summary>
|
|
private static Regex ulRE;
|
|
private static Regex NestedRE;
|
|
private static Regex ObjectRE;
|
|
private static Regex ParamRE;
|
|
private static Regex AttributesRE;
|
|
|
|
/// <summary>
|
|
/// Internal member storing the list of TOCItems which are holding merge links
|
|
/// </summary>
|
|
private static ArrayList _mergeItems = null;
|
|
|
|
/// <summary>
|
|
/// Internal member storing the last read regular topic item.
|
|
/// This is used to handle "Merge" entries and add them as child to this instance.
|
|
/// </summary>
|
|
private static TOCItem _lastTopicItem = null;
|
|
|
|
/// <summary>
|
|
/// Parses a HHC file and returns an ArrayList with the table of contents (TOC) tree
|
|
/// </summary>
|
|
/// <param name="hhcFile">string content of the hhc file</param>
|
|
/// <param name="chmFile">CHMFile instance</param>
|
|
/// <returns>Returns an ArrayList with the table of contents (TOC) tree</returns>
|
|
public static ArrayList ParseHHC(string hhcFile, CHMFile chmFile)
|
|
{
|
|
_lastTopicItem = null;
|
|
_mergeItems = null; // clear merged item list
|
|
ArrayList tocList = new ArrayList();
|
|
|
|
ulRE = new Regex(RE_ULBoundaries, RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
NestedRE = new Regex(RE_NestedBoundaries, RegexOptions.IgnorePatternWhitespace | RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
ObjectRE = new Regex(RE_ObjectBoundaries, RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
ParamRE = new Regex(RE_ParamBoundaries, RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
AttributesRE = new Regex(RE_QuoteAttributes, RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
|
|
int innerTextIdx = ulRE.GroupNumberFromName("innerText");
|
|
|
|
if( ulRE.IsMatch(hhcFile, 0) )
|
|
{
|
|
Match m = ulRE.Match(hhcFile, 0);
|
|
|
|
int nFirstUL = 0;
|
|
|
|
nFirstUL = hhcFile.ToLower().IndexOf("<ul>");
|
|
|
|
if(nFirstUL == -1)
|
|
nFirstUL = hhcFile.ToLower().IndexOf("<il>");
|
|
|
|
if( ObjectRE.IsMatch(hhcFile, 0) ) // first object block contains information types and categories
|
|
{
|
|
Match mO = ObjectRE.Match(hhcFile, 0);
|
|
int iOTxt = ObjectRE.GroupNumberFromName("innerText");
|
|
|
|
string globalText = mO.Groups[iOTxt].Value;
|
|
|
|
if( mO.Groups[iOTxt].Index <= nFirstUL)
|
|
ParseGlobalSettings( globalText, chmFile );
|
|
}
|
|
|
|
// parse toc tree
|
|
string innerText = m.Groups["innerText"].Value;
|
|
|
|
innerText = innerText.Replace("(", "(");
|
|
innerText = innerText.Replace(")", ")");
|
|
innerText = Regex.Replace(innerText, RE_ULOpening, "(", RegexOptions.IgnoreCase);
|
|
innerText = Regex.Replace(innerText, RE_ULClosing, ")", RegexOptions.IgnoreCase);
|
|
|
|
ParseTree( innerText, null, tocList, chmFile );
|
|
|
|
}
|
|
|
|
return tocList;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if the hhc file contains a global object tag.
|
|
/// </summary>
|
|
/// <param name="hhcFile">string content of the hhc file</param>
|
|
/// <param name="chmFile">chm file</param>
|
|
/// <returns>true if the hhc content contains a global object tag</returns>
|
|
public static bool HasGlobalObjectTag(string hhcFile, CHMFile chmFile)
|
|
{
|
|
bool bRet = false;
|
|
|
|
ulRE = new Regex(RE_ULBoundaries, RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
ObjectRE = new Regex(RE_ObjectBoundaries, RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline);
|
|
|
|
int innerTextIdx = ulRE.GroupNumberFromName("innerText");
|
|
|
|
if( ulRE.IsMatch(hhcFile, 0) )
|
|
{
|
|
Match m = ulRE.Match(hhcFile, 0);
|
|
|
|
int nFirstUL = 0;
|
|
|
|
nFirstUL = hhcFile.ToLower().IndexOf("<ul>");
|
|
|
|
if(nFirstUL == -1)
|
|
nFirstUL = hhcFile.ToLower().IndexOf("<il>");
|
|
|
|
if( ObjectRE.IsMatch(hhcFile, 0) ) // first object block contains information types and categories
|
|
{
|
|
Match mO = ObjectRE.Match(hhcFile, 0);
|
|
int iOTxt = ObjectRE.GroupNumberFromName("innerText");
|
|
|
|
string globalText = mO.Groups[iOTxt].Value;
|
|
|
|
if( mO.Groups[iOTxt].Index <= nFirstUL)
|
|
bRet = true;
|
|
}
|
|
}
|
|
|
|
return bRet;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets true if the previously done parsing found merge-links
|
|
/// </summary>
|
|
public static bool HasMergeLinks
|
|
{
|
|
get
|
|
{
|
|
if(_mergeItems==null)
|
|
return false;
|
|
|
|
return _mergeItems.Count > 0;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets all TOCItem references which are holding merge-links
|
|
/// </summary>
|
|
public static ArrayList MergeItems
|
|
{
|
|
get { return _mergeItems; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Recursively parses a sitemap tree
|
|
/// </summary>
|
|
/// <param name="text">content text</param>
|
|
/// <param name="parent">Parent for all read items</param>
|
|
/// <param name="arrNodes">arraylist which receives the extracted nodes</param>
|
|
/// <param name="chmFile">CHMFile instance</param>
|
|
private static void ParseTree( string text, TOCItem parent, ArrayList arrNodes, CHMFile chmFile )
|
|
{
|
|
string strPreItems="", strPostItems="";
|
|
string innerText = "";
|
|
|
|
int nIndex = 0;
|
|
|
|
while( NestedRE.IsMatch(text, nIndex) )
|
|
{
|
|
Match m = NestedRE.Match(text, nIndex);
|
|
|
|
innerText = m.Value.Substring( 1, m.Length-2);
|
|
|
|
strPreItems = text.Substring(nIndex,m.Index-nIndex);
|
|
|
|
ParseItems(strPreItems, parent, arrNodes, chmFile);
|
|
|
|
if((arrNodes.Count>0) && (innerText.Length > 0) )
|
|
{
|
|
TOCItem p = ((TOCItem)(arrNodes[arrNodes.Count-1]));
|
|
ParseTree( innerText, p, p.Children, chmFile );
|
|
}
|
|
|
|
nIndex = m.Index+m.Length;
|
|
}
|
|
|
|
if( nIndex == 0)
|
|
{
|
|
strPostItems = text.Substring(nIndex, text.Length-nIndex);
|
|
ParseItems(strPostItems, parent, arrNodes, chmFile);
|
|
}
|
|
else if( nIndex < text.Length-1)
|
|
{
|
|
strPostItems = text.Substring(nIndex, text.Length-nIndex);
|
|
ParseTree(strPostItems, parent, arrNodes, chmFile);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parses tree nodes from the text
|
|
/// </summary>
|
|
/// <param name="itemstext">text containing the items</param>
|
|
/// <param name="parent">Parent for all read items</param>
|
|
/// <param name="arrNodes">arraylist where the nodes should be added</param>
|
|
/// <param name="chmFile">CHMFile instance</param>
|
|
private static void ParseItems( string itemstext, TOCItem parent, ArrayList arrNodes, CHMFile chmFile)
|
|
{
|
|
int innerTextIdx = ObjectRE.GroupNumberFromName("innerText");
|
|
int innerPTextIdx = ParamRE.GroupNumberFromName("innerText");
|
|
|
|
// get group-name indexes
|
|
int nameIndex = AttributesRE.GroupNumberFromName("attributeName");
|
|
int valueIndex = AttributesRE.GroupNumberFromName("attributeValue");
|
|
int tdIndex = AttributesRE.GroupNumberFromName("attributeTD");
|
|
|
|
int nObjStartIndex = 0;
|
|
|
|
while( ObjectRE.IsMatch(itemstext, nObjStartIndex) )
|
|
{
|
|
Match m = ObjectRE.Match(itemstext, nObjStartIndex);
|
|
|
|
string innerText = m.Groups[innerTextIdx].Value;
|
|
|
|
TOCItem tocItem = new TOCItem();
|
|
tocItem.TocMode = DataMode.TextBased;
|
|
tocItem.AssociatedFile = chmFile;
|
|
tocItem.Parent = parent;
|
|
|
|
// read parameters
|
|
int nParamIndex = 0;
|
|
|
|
while( ParamRE.IsMatch(innerText, nParamIndex) )
|
|
{
|
|
Match mP = ParamRE.Match(innerText, nParamIndex);
|
|
|
|
string innerP = mP.Groups[innerPTextIdx].Value;
|
|
|
|
string paramName = "";
|
|
string paramValue = "";
|
|
|
|
int nAttrIdx = 0;
|
|
|
|
while( AttributesRE.IsMatch( innerP, nAttrIdx ) )
|
|
{
|
|
Match mA = AttributesRE.Match(innerP, nAttrIdx);
|
|
|
|
string attributeName = mA.Groups[nameIndex].Value;
|
|
string attributeValue = mA.Groups[valueIndex].Value;
|
|
string attributeTD = mA.Groups[tdIndex].Value;
|
|
|
|
if(attributeTD.Length > 0)
|
|
{
|
|
// delete the trailing textqualifier
|
|
if( attributeValue.Length > 0)
|
|
{
|
|
int ltqi = attributeValue.LastIndexOf( attributeTD );
|
|
|
|
if(ltqi >= 0)
|
|
{
|
|
attributeValue = attributeValue.Substring(0,ltqi);
|
|
}
|
|
}
|
|
}
|
|
|
|
if( attributeName.ToLower() == "name")
|
|
{
|
|
paramName = HttpUtility.HtmlDecode(attributeValue); // for unicode encoded values
|
|
}
|
|
|
|
if( attributeName.ToLower() == "value")
|
|
{
|
|
paramValue = HttpUtility.HtmlDecode(attributeValue); // for unicode encoded values
|
|
// delete trailing /
|
|
while((paramValue.Length>0)&&(paramValue[paramValue.Length-1] == '/'))
|
|
paramValue = paramValue.Substring(0,paramValue.Length-1);
|
|
|
|
}
|
|
|
|
nAttrIdx = mA.Index+mA.Length;
|
|
}
|
|
|
|
tocItem.Params[paramName] = paramValue;
|
|
switch(paramName.ToLower())
|
|
{
|
|
case "name":
|
|
{
|
|
tocItem.Name = paramValue;
|
|
};break;
|
|
case "local":
|
|
{
|
|
tocItem.Local = paramValue.Replace("../", "").Replace("./", "");
|
|
};break;
|
|
case "imagenumber":
|
|
{
|
|
tocItem.ImageIndex = Int32.Parse(paramValue);
|
|
tocItem.ImageIndex-=1;
|
|
|
|
int nFolderAdd = 0;
|
|
|
|
if((chmFile != null) && (chmFile.ImageTypeFolder))
|
|
{
|
|
// get the value which should be added, to display folders instead of books
|
|
if(HtmlHelpSystem.UseHH2TreePics)
|
|
nFolderAdd = 8;
|
|
else
|
|
nFolderAdd = 4;
|
|
}
|
|
|
|
if(tocItem.ImageIndex%2 != 0)
|
|
{
|
|
if(tocItem.ImageIndex==1)
|
|
tocItem.ImageIndex=0;
|
|
}
|
|
if(HtmlHelpSystem.UseHH2TreePics)
|
|
if( tocItem.ImageIndex == 0)
|
|
tocItem.ImageIndex = TOCItem.STD_FOLDER_HH2+nFolderAdd;
|
|
};break;
|
|
case "merge": // this item contains topics or a full TOC from a merged CHM
|
|
{
|
|
tocItem.MergeLink = paramValue;
|
|
|
|
// "register" this item as merge-link
|
|
if(_mergeItems==null)
|
|
_mergeItems=new ArrayList();
|
|
|
|
_mergeItems.Add(tocItem);
|
|
|
|
};break;
|
|
case "type": // information type assignment for item
|
|
{
|
|
tocItem.InfoTypeStrings.Add( paramValue );
|
|
};break;
|
|
}
|
|
|
|
nParamIndex = mP.Index+mP.Length;
|
|
}
|
|
|
|
tocItem.ChmFile = chmFile.ChmFilePath;
|
|
|
|
if(tocItem.MergeLink.Length > 0)
|
|
{
|
|
if(_lastTopicItem != null)
|
|
{
|
|
tocItem.Parent = _lastTopicItem;
|
|
_lastTopicItem.Children.Add(tocItem);
|
|
}
|
|
else
|
|
arrNodes.Add( tocItem );
|
|
}
|
|
else
|
|
{
|
|
_lastTopicItem = tocItem;
|
|
arrNodes.Add( tocItem );
|
|
}
|
|
|
|
nObjStartIndex = m.Index+m.Length;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parses the very first <OBJECT> tag in the sitemap file and extracts
|
|
/// information types and categories.
|
|
/// </summary>
|
|
/// <param name="sText">text of the object tag</param>
|
|
/// <param name="chmFile">CHMFile instance</param>
|
|
private static void ParseGlobalSettings(string sText, CHMFile chmFile)
|
|
{
|
|
int innerPTextIdx = ParamRE.GroupNumberFromName("innerText");
|
|
|
|
// get group-name indexes
|
|
int nameIndex = AttributesRE.GroupNumberFromName("attributeName");
|
|
int valueIndex = AttributesRE.GroupNumberFromName("attributeValue");
|
|
int tdIndex = AttributesRE.GroupNumberFromName("attributeTD");
|
|
|
|
// read parameters
|
|
int nParamIndex = 0;
|
|
|
|
// 0... unknown
|
|
// 1... inclusinve info type name
|
|
// 2... exclusive info type name
|
|
// 3... hidden info type name
|
|
// 4... category name
|
|
// 5... incl infotype name for category
|
|
// 6... excl infotype name for category
|
|
// 7... hidden infotype name for category
|
|
int prevItem = 0;
|
|
|
|
string sName = "";
|
|
string sDescription = "";
|
|
string curCategory = "";
|
|
|
|
while( ParamRE.IsMatch(sText, nParamIndex) )
|
|
{
|
|
Match mP = ParamRE.Match(sText, nParamIndex);
|
|
|
|
string innerP = mP.Groups[innerPTextIdx].Value;
|
|
|
|
string paramName = "";
|
|
string paramValue = "";
|
|
|
|
int nAttrIdx = 0;
|
|
|
|
while( AttributesRE.IsMatch( innerP, nAttrIdx ) )
|
|
{
|
|
Match mA = AttributesRE.Match(innerP, nAttrIdx);
|
|
|
|
string attributeName = mA.Groups[nameIndex].Value;
|
|
string attributeValue = mA.Groups[valueIndex].Value;
|
|
string attributeTD = mA.Groups[tdIndex].Value;
|
|
|
|
if(attributeTD.Length > 0)
|
|
{
|
|
// delete the trailing textqualifier
|
|
if( attributeValue.Length > 0)
|
|
{
|
|
int ltqi = attributeValue.LastIndexOf( attributeTD );
|
|
|
|
if(ltqi >= 0)
|
|
{
|
|
attributeValue = attributeValue.Substring(0,ltqi);
|
|
}
|
|
}
|
|
}
|
|
|
|
if( attributeName.ToLower() == "name")
|
|
{
|
|
paramName = HttpUtility.HtmlDecode(attributeValue); // for unicode encoded values
|
|
}
|
|
|
|
if( attributeName.ToLower() == "value")
|
|
{
|
|
paramValue = HttpUtility.HtmlDecode(attributeValue); // for unicode encoded values
|
|
// delete trailing /
|
|
while((paramValue.Length>0)&&(paramValue[paramValue.Length-1] == '/'))
|
|
paramValue = paramValue.Substring(0,paramValue.Length-1);
|
|
|
|
}
|
|
|
|
nAttrIdx = mA.Index+mA.Length;
|
|
}
|
|
|
|
switch(paramName.ToLower())
|
|
{
|
|
case "savetype": // inclusive information type name
|
|
{
|
|
prevItem = 1;
|
|
sName = paramValue;
|
|
};break;
|
|
case "savetypedesc": // description of information type
|
|
{
|
|
InformationTypeMode mode = InformationTypeMode.Inclusive;
|
|
sDescription = paramValue;
|
|
|
|
if( prevItem == 1)
|
|
mode = InformationTypeMode.Inclusive;
|
|
if( prevItem == 2)
|
|
mode = InformationTypeMode.Exclusive;
|
|
if( prevItem == 3)
|
|
mode = InformationTypeMode.Hidden;
|
|
|
|
if( chmFile.GetInformationType( sName ) == null)
|
|
{
|
|
// check if the HtmlHelpSystem already holds such an information type
|
|
if( chmFile.SystemInstance.GetInformationType( sName ) == null)
|
|
{
|
|
// info type not found yet
|
|
|
|
InformationType newType = new InformationType(sName, sDescription, mode);
|
|
chmFile.InformationTypes.Add(newType);
|
|
}
|
|
else
|
|
{
|
|
InformationType sysType = chmFile.SystemInstance.GetInformationType( sName );
|
|
chmFile.InformationTypes.Add( sysType );
|
|
}
|
|
}
|
|
|
|
prevItem = 0;
|
|
};break;
|
|
case "saveexclusive": // exclusive information type name
|
|
{
|
|
prevItem = 2;
|
|
sName = paramValue;
|
|
};break;
|
|
case "savehidden": // hidden information type name
|
|
{
|
|
prevItem = 3;
|
|
sName = paramValue;
|
|
};break;
|
|
case "category": // category name
|
|
{
|
|
prevItem = 4;
|
|
sName = paramValue;
|
|
curCategory = sName;
|
|
};break;
|
|
case "categorydesc": // category description
|
|
{
|
|
sDescription = paramValue;
|
|
|
|
if( chmFile.GetCategory( sName ) == null)
|
|
{
|
|
// check if the HtmlHelpSystem already holds such a category
|
|
if( chmFile.SystemInstance.GetCategory( sName ) == null)
|
|
{
|
|
// add category
|
|
Category newCat = new Category(sName, sDescription);
|
|
chmFile.Categories.Add(newCat);
|
|
}
|
|
else
|
|
{
|
|
Category sysCat = chmFile.SystemInstance.GetCategory( sName );
|
|
chmFile.Categories.Add( sysCat );
|
|
}
|
|
}
|
|
|
|
prevItem = 0;
|
|
};break;
|
|
case "type": // inclusive information type which is member of the previously read category
|
|
{
|
|
prevItem = 5;
|
|
sName = paramValue;
|
|
};break;
|
|
case "typedesc": // description of type for category
|
|
{
|
|
sDescription = paramValue;
|
|
Category cat = chmFile.GetCategory( curCategory );
|
|
|
|
if( cat != null)
|
|
{
|
|
// category found
|
|
InformationType infoType = chmFile.GetInformationType( sName );
|
|
|
|
if( infoType != null)
|
|
{
|
|
if( !cat.ContainsInformationType(infoType))
|
|
{
|
|
infoType.SetCategoryFlag(true);
|
|
cat.AddInformationType(infoType);
|
|
}
|
|
}
|
|
}
|
|
|
|
prevItem = 0;
|
|
};break;
|
|
case "typeexclusive": // exclusive information type which is member of the previously read category
|
|
{
|
|
prevItem = 6;
|
|
sName = paramValue;
|
|
};break;
|
|
case "typehidden": // hidden information type which is member of the previously read category
|
|
{
|
|
prevItem = 7;
|
|
sName = paramValue;
|
|
};break;
|
|
default:
|
|
{
|
|
prevItem = 0;
|
|
sName = "";
|
|
sDescription = "";
|
|
};break;
|
|
}
|
|
|
|
nParamIndex = mP.Index+mP.Length;
|
|
}
|
|
}
|
|
}
|
|
}
|