///==============================================================
/// Office File Reader
///==============================================================
using System;
using System.Text;
using System.Runtime.InteropServices;
namespace OfficeFileReader
{
#region Stuff you Dont even need to look at
[Flags]
public enum IFILTER_INIT
{
NONE = 0,
CANON_PARAGRAPHS = 1,
HARD_LINE_BREAKS = 2,
CANON_HYPHENS = 4,
CANON_SPACES = 8,
APPLY_INDEX_ATTRIBUTES = 16,
APPLY_CRAWL_ATTRIBUTES = 256,
APPLY_OTHER_ATTRIBUTES = 32,
INDEXING_ONLY = 64,
SEARCH_LINKS = 128,
FILTER_OWNED_VALUE_OK = 512
}
[Flags]
public enum IFILTER_FLAGS
{
OLE_PROPERTIES = 1
}
public enum CHUNK_BREAKTYPE
{
CHUNK_NO_BREAK = 0,
CHUNK_EOW = 1,
CHUNK_EOS = 2,
CHUNK_EOP = 3,
CHUNK_EOC = 4
}
[Flags]
public enum CHUNKSTATE
{
CHUNK_TEXT = 0x1,
CHUNK_VALUE = 0x2,
CHUNK_FILTER_OWNED_VALUE = 0x4
}
public enum PSKIND
{
LPWSTR = 0,
PROPID = 1
}
[StructLayout(LayoutKind.Sequential)]
public struct PROPSPEC
{
public uint ulKind;
public uint propid;
public IntPtr lpwstr;
}
[StructLayout(LayoutKind.Sequential)]
public struct FULLPROPSPEC
{
public Guid guidPropSet;
public PROPSPEC psProperty;
}
[StructLayout(LayoutKind.Sequential)]
public struct STAT_CHUNK
{
public uint idChunk;
[MarshalAs(UnmanagedType.U4)]
public CHUNK_BREAKTYPE breakType;
[MarshalAs(UnmanagedType.U4)]
public CHUNKSTATE flags;
public uint locale;
[MarshalAs(UnmanagedType.Struct)]
public FULLPROPSPEC attribute;
public uint idChunkSource;
public uint cwcStartSource;
public uint cwcLenSource;
}
[StructLayout(LayoutKind.Sequential)]
public struct FILTERREGION
{
public uint idChunk;
public uint cwcStart;
public uint cwcExtent;
}
#endregion
[ComImport]
[Guid("89BCB740-6119-101A-BCB7-00DD010655AF")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IFilter
{
void Init([MarshalAs(UnmanagedType.U4)] IFILTER_INIT grfFlags,
uint cAttributes,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] FULLPROPSPEC[] aAttributes,
ref uint pdwFlags);
void GetChunk([MarshalAs(UnmanagedType.Struct)] out STAT_CHUNK pStat);
[PreserveSig]
int GetText(ref uint pcwcBuffer, [MarshalAs(UnmanagedType.LPWStr)] StringBuilder buffer);
void GetValue(ref UIntPtr ppPropValue);
void BindRegion([MarshalAs(UnmanagedType.Struct)]FILTERREGION origPos, ref Guid riid, ref UIntPtr ppunk);
}
[ComImport]
[Guid("f07f3920-7b8c-11cf-9be8-00aa004b9986")]
public class CFilter
{
}
public class Constants
{
public const uint PID_STG_DIRECTORY = 0x00000002;
public const uint PID_STG_CLASSID = 0x00000003;
public const uint PID_STG_STORAGETYPE = 0x00000004;
public const uint PID_STG_VOLUME_ID = 0x00000005;
public const uint PID_STG_PARENT_WORKID = 0x00000006;
public const uint PID_STG_SECONDARYSTORE = 0x00000007;
public const uint PID_STG_FILEINDEX = 0x00000008;
public const uint PID_STG_LASTCHANGEUSN = 0x00000009;
public const uint PID_STG_NAME = 0x0000000a;
public const uint PID_STG_PATH = 0x0000000b;
public const uint PID_STG_SIZE = 0x0000000c;
public const uint PID_STG_ATTRIBUTES = 0x0000000d;
public const uint PID_STG_WRITETIME = 0x0000000e;
public const uint PID_STG_CREATETIME = 0x0000000f;
public const uint PID_STG_ACCESSTIME = 0x00000010;
public const uint PID_STG_CHANGETIME = 0x00000011;
public const uint PID_STG_CONTENTS = 0x00000013;
public const uint PID_STG_SHORTNAME = 0x00000014;
public const int FILTER_E_END_OF_CHUNKS = (unchecked((int)0x80041700));
public const int FILTER_E_NO_MORE_TEXT = (unchecked((int)0x80041701));
public const int FILTER_E_NO_MORE_VALUES = (unchecked((int)0x80041702));
public const int FILTER_E_NO_TEXT = (unchecked((int)0x80041705));
public const int FILTER_E_NO_VALUES = (unchecked((int)0x80041706));
public const int FILTER_S_LAST_TEXT = (unchecked((int)0x00041709));
}
public class OfficeFileReader
{
public void GetText(String path,ref string text)
// path is the path of the .doc, .xls or .ppt file
// text is the variable in which all the extracted text will be stored
{
String result = "";
int count = 0;
try
{
IFilter ifilt = (IFilter)(new CFilter());
//System.Runtime.InteropServices.UCOMIPersistFile ipf = (System.Runtime.InteropServices.UCOMIPersistFile)(ifilt);
System.Runtime.InteropServices.ComTypes.IPersistFile ipf= (System.Runtime.InteropServices.ComTypes.IPersistFile)(ifilt);
ipf.Load(@path, 0);
uint i = 0;
STAT_CHUNK ps = new STAT_CHUNK();
ifilt.Init(IFILTER_INIT.NONE, 0, null, ref i);
int hr = 0;
while (hr == 0)
{
ifilt.GetChunk(out ps);
if (ps.flags == CHUNKSTATE.CHUNK_TEXT)
{
uint pcwcBuffer = 1000;
int hr2 = 0;
while (hr2 == Constants.FILTER_S_LAST_TEXT || hr2 == 0)
{
try
{
pcwcBuffer = 1000;
System.Text.StringBuilder sbBuffer = new StringBuilder((int)pcwcBuffer);
hr2 = ifilt.GetText(ref pcwcBuffer, sbBuffer);
// Console.WriteLine(pcwcBuffer.ToString());
if (hr2 >= 0) result += sbBuffer.ToString(0, (int)pcwcBuffer);
//textBox1.Text +="\n";
// result += "#########################################";
count++;
}
catch (System.Runtime.InteropServices.COMException myE)
{
Console.WriteLine(myE.Data + "\n" + myE.Message + "\n");
}
}
}
}
}
catch (System.Runtime.InteropServices.COMException myE)
{
Console.WriteLine(myE.Data + "\n" + myE.Message + "\n");
}
text = result;
//return count;
return;
}
}
}
提取DOC文件内容
