diff --git a/tools/zipalign/ZipEntry.h b/tools/zipalign/ZipEntry.h
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+++ b/tools/zipalign/ZipEntry.h
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+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// Zip archive entries.
+//
+// The ZipEntry class is tightly meshed with the ZipFile class.
+//
+#ifndef __LIBS_ZIPENTRY_H
+#define __LIBS_ZIPENTRY_H
+
+#include <utils/Errors.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+namespace android {
+
+class ZipFile;
+
+/*
+ * ZipEntry objects represent a single entry in a Zip archive.
+ *
+ * You can use one of these to get or set information about an entry, but
+ * there are no functions here for accessing the data itself.  (We could
+ * tuck a pointer to the ZipFile in here for convenience, but that raises
+ * the likelihood of using ZipEntry objects after discarding the ZipFile.)
+ *
+ * File information is stored in two places: next to the file data (the Local
+ * File Header, and possibly a Data Descriptor), and at the end of the file
+ * (the Central Directory Entry).  The two must be kept in sync.
+ */
+class ZipEntry {
+public:
+    friend class ZipFile;
+
+    ZipEntry(void)
+        : mDeleted(false), mMarked(false)
+        {}
+    ~ZipEntry(void) {}
+
+    /*
+     * Returns "true" if the data is compressed.
+     */
+    bool isCompressed(void) const {
+        return mCDE.mCompressionMethod != kCompressStored;
+    }
+    int getCompressionMethod(void) const { return mCDE.mCompressionMethod; }
+
+    /*
+     * Return the uncompressed length.
+     */
+    off_t getUncompressedLen(void) const { return mCDE.mUncompressedSize; }
+
+    /*
+     * Return the compressed length.  For uncompressed data, this returns
+     * the same thing as getUncompresesdLen().
+     */
+    off_t getCompressedLen(void) const { return mCDE.mCompressedSize; }
+
+    /*
+     * Return the absolute file offset of the start of the compressed or
+     * uncompressed data.
+     */
+    off_t getFileOffset(void) const {
+        return mCDE.mLocalHeaderRelOffset +
+                LocalFileHeader::kLFHLen +
+                mLFH.mFileNameLength +
+                mLFH.mExtraFieldLength;
+    }
+
+    /*
+     * Return the data CRC.
+     */
+    unsigned long getCRC32(void) const { return mCDE.mCRC32; }
+
+    /*
+     * Return file modification time in UNIX seconds-since-epoch.
+     */
+    time_t getModWhen(void) const;
+
+    /*
+     * Return the archived file name.
+     */
+    const char* getFileName(void) const { return (const char*) mCDE.mFileName; }
+
+    /*
+     * Application-defined "mark".  Can be useful when synchronizing the
+     * contents of an archive with contents on disk.
+     */
+    bool getMarked(void) const { return mMarked; }
+    void setMarked(bool val) { mMarked = val; }
+
+    /*
+     * Some basic functions for raw data manipulation.  "LE" means
+     * Little Endian.
+     */
+    static inline unsigned short getShortLE(const unsigned char* buf) {
+        return buf[0] | (buf[1] << 8);
+    }
+    static inline unsigned long getLongLE(const unsigned char* buf) {
+        return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
+    }
+    static inline void putShortLE(unsigned char* buf, short val) {
+        buf[0] = (unsigned char) val;
+        buf[1] = (unsigned char) (val >> 8);
+    }
+    static inline void putLongLE(unsigned char* buf, long val) {
+        buf[0] = (unsigned char) val;
+        buf[1] = (unsigned char) (val >> 8);
+        buf[2] = (unsigned char) (val >> 16);
+        buf[3] = (unsigned char) (val >> 24);
+    }
+
+    /* defined for Zip archives */
+    enum {
+        kCompressStored     = 0,        // no compression
+        // shrunk           = 1,
+        // reduced 1        = 2,
+        // reduced 2        = 3,
+        // reduced 3        = 4,
+        // reduced 4        = 5,
+        // imploded         = 6,
+        // tokenized        = 7,
+        kCompressDeflated   = 8,        // standard deflate
+        // Deflate64        = 9,
+        // lib imploded     = 10,
+        // reserved         = 11,
+        // bzip2            = 12,
+    };
+
+    /*
+     * Deletion flag.  If set, the entry will be removed on the next
+     * call to "flush".
+     */
+    bool getDeleted(void) const { return mDeleted; }
+
+protected:
+    /*
+     * Initialize the structure from the file, which is pointing at
+     * our Central Directory entry.
+     */
+    status_t initFromCDE(FILE* fp);
+
+    /*
+     * Initialize the structure for a new file.  We need the filename
+     * and comment so that we can properly size the LFH area.  The
+     * filename is mandatory, the comment is optional.
+     */
+    void initNew(const char* fileName, const char* comment);
+
+    /*
+     * Initialize the structure with the contents of a ZipEntry from
+     * another file.
+     */
+    status_t initFromExternal(const ZipFile* pZipFile, const ZipEntry* pEntry);
+
+    /*
+     * Add some pad bytes to the LFH.  We do this by adding or resizing
+     * the "extra" field.
+     */
+    status_t addPadding(int padding);
+
+    /*
+     * Set information about the data for this entry.
+     */
+    void setDataInfo(long uncompLen, long compLen, unsigned long crc32,
+        int compressionMethod);
+
+    /*
+     * Set the modification date.
+     */
+    void setModWhen(time_t when);
+
+    /*
+     * Return the offset of the local file header.
+     */
+    off_t getLFHOffset(void) const { return mCDE.mLocalHeaderRelOffset; }
+
+    /*
+     * Set the offset of the local file header, relative to the start of
+     * the current file.
+     */
+    void setLFHOffset(off_t offset) {
+        mCDE.mLocalHeaderRelOffset = (long) offset;
+    }
+
+    /* mark for deletion; used by ZipFile::remove() */
+    void setDeleted(void) { mDeleted = true; }
+
+private:
+    /* these are private and not defined */
+    ZipEntry(const ZipEntry& src);
+    ZipEntry& operator=(const ZipEntry& src);
+
+    /* returns "true" if the CDE and the LFH agree */
+    bool compareHeaders(void) const;
+    void copyCDEtoLFH(void);
+
+    bool        mDeleted;       // set if entry is pending deletion
+    bool        mMarked;        // app-defined marker
+
+    /*
+     * Every entry in the Zip archive starts off with one of these.
+     */
+    class LocalFileHeader {
+    public:
+        LocalFileHeader(void) :
+            mVersionToExtract(0),
+            mGPBitFlag(0),
+            mCompressionMethod(0),
+            mLastModFileTime(0),
+            mLastModFileDate(0),
+            mCRC32(0),
+            mCompressedSize(0),
+            mUncompressedSize(0),
+            mFileNameLength(0),
+            mExtraFieldLength(0),
+            mFileName(NULL),
+            mExtraField(NULL)
+        {}
+        virtual ~LocalFileHeader(void) {
+            delete[] mFileName;
+            delete[] mExtraField;
+        }
+
+        status_t read(FILE* fp);
+        status_t write(FILE* fp);
+
+        // unsigned long mSignature;
+        unsigned short  mVersionToExtract;
+        unsigned short  mGPBitFlag;
+        unsigned short  mCompressionMethod;
+        unsigned short  mLastModFileTime;
+        unsigned short  mLastModFileDate;
+        unsigned long   mCRC32;
+        unsigned long   mCompressedSize;
+        unsigned long   mUncompressedSize;
+        unsigned short  mFileNameLength;
+        unsigned short  mExtraFieldLength;
+        unsigned char*  mFileName;
+        unsigned char*  mExtraField;
+
+        enum {
+            kSignature      = 0x04034b50,
+            kLFHLen         = 30,       // LocalFileHdr len, excl. var fields
+        };
+
+        void dump(void) const;
+    };
+
+    /*
+     * Every entry in the Zip archive has one of these in the "central
+     * directory" at the end of the file.
+     */
+    class CentralDirEntry {
+    public:
+        CentralDirEntry(void) :
+            mVersionMadeBy(0),
+            mVersionToExtract(0),
+            mGPBitFlag(0),
+            mCompressionMethod(0),
+            mLastModFileTime(0),
+            mLastModFileDate(0),
+            mCRC32(0),
+            mCompressedSize(0),
+            mUncompressedSize(0),
+            mFileNameLength(0),
+            mExtraFieldLength(0),
+            mFileCommentLength(0),
+            mDiskNumberStart(0),
+            mInternalAttrs(0),
+            mExternalAttrs(0),
+            mLocalHeaderRelOffset(0),
+            mFileName(NULL),
+            mExtraField(NULL),
+            mFileComment(NULL)
+        {}
+        virtual ~CentralDirEntry(void) {
+            delete[] mFileName;
+            delete[] mExtraField;
+            delete[] mFileComment;
+        }
+
+        status_t read(FILE* fp);
+        status_t write(FILE* fp);
+
+        // unsigned long mSignature;
+        unsigned short  mVersionMadeBy;
+        unsigned short  mVersionToExtract;
+        unsigned short  mGPBitFlag;
+        unsigned short  mCompressionMethod;
+        unsigned short  mLastModFileTime;
+        unsigned short  mLastModFileDate;
+        unsigned long   mCRC32;
+        unsigned long   mCompressedSize;
+        unsigned long   mUncompressedSize;
+        unsigned short  mFileNameLength;
+        unsigned short  mExtraFieldLength;
+        unsigned short  mFileCommentLength;
+        unsigned short  mDiskNumberStart;
+        unsigned short  mInternalAttrs;
+        unsigned long   mExternalAttrs;
+        unsigned long   mLocalHeaderRelOffset;
+        unsigned char*  mFileName;
+        unsigned char*  mExtraField;
+        unsigned char*  mFileComment;
+
+        void dump(void) const;
+
+        enum {
+            kSignature      = 0x02014b50,
+            kCDELen         = 46,       // CentralDirEnt len, excl. var fields
+        };
+    };
+
+    enum {
+        //kDataDescriptorSignature  = 0x08074b50,   // currently unused
+        kDataDescriptorLen  = 16,           // four 32-bit fields
+
+        kDefaultVersion     = 20,           // need deflate, nothing much else
+        kDefaultMadeBy      = 0x0317,       // 03=UNIX, 17=spec v2.3
+        kUsesDataDescr      = 0x0008,       // GPBitFlag bit 3
+    };
+
+    LocalFileHeader     mLFH;
+    CentralDirEntry     mCDE;
+};
+
+}; // namespace android
+
+#endif // __LIBS_ZIPENTRY_H