C# IByteReader.GetHit方法代码示例

		/**
		 * Determines the file extension
		 * If the file has got some positive hits, then check these against this extension
		 * If the file has not got any positive hits, then look for tentative hits
		 * based on the extension only.
		 *
		 * @param targetFile   The binary file to be identified
		 */
		private void checkExtension(IByteReader targetFile)
		{

			//work out if file has an extension
			bool hasExtension = true;
			int dotPos = targetFile.GetFileName().LastIndexOf(".");
			if (dotPos < 0)
			{
				hasExtension = false;
			}
			else if (dotPos == targetFile.GetFileName().Length - 1)
			{
				hasExtension = false;
			}
			else if (targetFile.GetFileName().LastIndexOf("/") > dotPos)
			{
				hasExtension = false;
			}
			else if (targetFile.GetFileName().LastIndexOf("\\") > dotPos)
			{
				hasExtension = false;
			}

			//
			if (hasExtension)
			{
				String fileExtension = targetFile.GetFileName().Substring(dotPos + 1);

				if (targetFile.GetNumberOfHits() > 0)
				{

					//for each file format which is a hit, check that it expects the given extension - if not give a warning
					for (int iHit = 0; iHit < targetFile.GetNumberOfHits(); iHit++)
					{
						if (!(targetFile.GetHit(iHit).GetFileFormat().HasMatchingExtension(fileExtension)))
						{
							targetFile.GetHit(iHit).SetIdentificationWarning(MessageDisplay.FILEEXTENSIONWARNING);
						}
					}//loop through hits

				}
				else
				{
					//no positive hits have been found, so search for tenative hits
					//loop through all file formats with no internal signature
					for (int iFormat = 0; iFormat < this.getNumFileFormats(); iFormat++)
					{
						if (this.getFileFormat(iFormat).GetNumberOfInternalSignatures() == 0)
						{
							if (this.getFileFormat(iFormat).HasMatchingExtension(fileExtension))
							{
								//add this as a tentative hit
								FileFormatHit fileHit = new FileFormatHit(this.getFileFormat(iFormat), AnalysisController.HIT_TYPE_TENTATIVE, false, "");
								targetFile.AddHit(fileHit);
								targetFile.SetTentativeIdentification();
							}
						}
					}//loop through file formats
				}
			}//end of if(hasExtension)
			else
			{
				//if the file does not have an extension then add warning to all its hits
				for (int iHit = 0; iHit < targetFile.GetNumberOfHits(); iHit++)
				{
					targetFile.GetHit(iHit).SetIdentificationWarning(MessageDisplay.FILEEXTENSIONWARNING);
				}
			}
		}

		/**
		 * Print out the list of hits (for debugging purposes only
		 */
		private void debugDisplayHits(IByteReader testFile, String fileName) {
        
        System.Console.WriteLine("==================================");
        if (testFile.IsClassified()) {
            
            //display file classification and any warning
            System.Console.WriteLine("     " + fileName);
            if(testFile.GetIdentificationWarning().Length > 0)
                System.Console.WriteLine("with warning: "+testFile.GetIdentificationWarning());
            
            //display list of hits
            for(int ih=0; ih<testFile.GetNumberOfHits(); ih++) {
                String specificityDisplay = testFile.GetHit(ih).IsSpecific()?"specific":"generic";
                System.Console.WriteLine("          " + testFile.GetHit(ih).GetHitTypeVerbose() + " " + specificityDisplay + " hit for " + testFile.GetHit(ih).GetFileFormat().GetName() + "  [PUID: " + testFile.GetHit(ih).GetFileFormat().GetPuid()+ "]");
                if(testFile.GetHit(ih).GetHitWarning().Length > 0)
                {
                    System.Console.WriteLine("               WARNING: " + testFile.GetHit(ih).GetHitWarning());
                }
            }
        } else {
			System.Console.WriteLine("     " + fileName + " was not classified");
        }
        
    }

		/**
		 * Remove any hits for which there is a higher priority hit
		 *
		 * @param targetFile   The binary file to be identified
		 */
		private void removeLowerPriorityHits(IByteReader targetFile)
		{
			//loop through specific hits and list any hits which these have priority over
			IList<int> hitsToRemove = new List<int>(); //ArrayList();
			for (int i = 0; i < targetFile.GetNumberOfHits(); i++)
			{
				for (int j = 0; j < targetFile.GetHit(i).GetFileFormat().GetNumberOfHasPriorityOver(); j++) //HasPriorityOver(); j++)
				{
					int formatID = targetFile.GetHit(i).GetFileFormat().GetHasPriorityOver(j); //getHasPriorityOver(j);
					for (int k = 0; k < targetFile.GetNumberOfHits(); k++)
					{ //loop through hits to find any for this file format
						if (targetFile.GetHit(k).GetFileFormat().GetId() == formatID)
						{
							hitsToRemove.Add(k); //Integer.toString(k));  //use string representation as ArrayList won't take integers
							break;
						}
					}
				}
			}
			//Create sorted array of indexes for hits to be removed
			int[] indexesOfHits = new int[hitsToRemove.Count];
			int numHitsToRemove = 0;
			for (int i = 0; i < hitsToRemove.Count; i++)
			{   //loop through unsorted list of hits to be removed
				int j = numHitsToRemove;
				//int indexOfHit =  Integer.parseInt((String)hitsToRemove[i]);
				int indexOfHit = hitsToRemove[i];
				while (j > 0 && indexesOfHits[j - 1] > indexOfHit)
				{
					indexesOfHits[j] = indexesOfHits[j - 1];
					--j;
				}
				indexesOfHits[j] = indexOfHit;
				++numHitsToRemove;
			}
			//Delete hits in decreasing index order, ignorinmg any repetitions
			for (int i = indexesOfHits.Length - 1; i >= 0; i--)
			{
				if (i == (indexesOfHits.Length - 1))
				{
					targetFile.RemoveHit(indexesOfHits[i]);
				}
				else if (indexesOfHits[i] != indexesOfHits[i + 1])
				{
					targetFile.RemoveHit(indexesOfHits[i]);
				}
			}

		}