auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 1296 deletions

diff --git a/libs/utils/ZipFile.cpp b/libs/utils/ZipFile.cpp
deleted file mode 100644
index 89aa874..0000000
--- a/libs/utils/ZipFile.cpp
+++ /dev/null
@@ -1,1296 +0,0 @@
-/*
- * 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.
- */
-
-//
-// Access to Zip archives.
-//
-
-#define LOG_TAG "zip"
-
-#include "utils/ZipFile.h"
-#include "utils/ZipUtils.h"
-#include "utils/Log.h"
-
-#include <zlib.h>
-#define DEF_MEM_LEVEL 8                // normally in zutil.h?
-
-#include <memory.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <assert.h>
-
-using namespace android;
-
-/*
- * Some environments require the "b", some choke on it.
- */
-#define FILE_OPEN_RO        "rb"
-#define FILE_OPEN_RW        "r+b"
-#define FILE_OPEN_RW_CREATE "w+b"
-
-/* should live somewhere else? */
-static status_t errnoToStatus(int err)
-{
-    if (err == ENOENT)
-        return NAME_NOT_FOUND;
-    else if (err == EACCES)
-        return PERMISSION_DENIED;
-    else
-        return UNKNOWN_ERROR;
-}
-
-/*
- * Open a file and parse its guts.
- */
-status_t ZipFile::open(const char* zipFileName, int flags)
-{
-    bool newArchive = false;
-
-    assert(mZipFp == NULL);     // no reopen
-
-    if ((flags & kOpenTruncate))
-        flags |= kOpenCreate;           // trunc implies create
-
-    if ((flags & kOpenReadOnly) && (flags & kOpenReadWrite))
-        return INVALID_OPERATION;       // not both
-    if (!((flags & kOpenReadOnly) || (flags & kOpenReadWrite)))
-        return INVALID_OPERATION;       // not neither
-    if ((flags & kOpenCreate) && !(flags & kOpenReadWrite))
-        return INVALID_OPERATION;       // create requires write
-
-    if (flags & kOpenTruncate) {
-        newArchive = true;
-    } else {
-        newArchive = (access(zipFileName, F_OK) != 0);
-        if (!(flags & kOpenCreate) && newArchive) {
-            /* not creating, must already exist */
-            LOGD("File %s does not exist", zipFileName);
-            return NAME_NOT_FOUND;
-        }
-    }
-
-    /* open the file */
-    const char* openflags;
-    if (flags & kOpenReadWrite) {
-        if (newArchive)
-            openflags = FILE_OPEN_RW_CREATE;
-        else
-            openflags = FILE_OPEN_RW;
-    } else {
-        openflags = FILE_OPEN_RO;
-    }
-    mZipFp = fopen(zipFileName, openflags);
-    if (mZipFp == NULL) {
-		int err = errno;
-		LOGD("fopen failed: %d\n", err);
-        return errnoToStatus(err);
-	}
-
-    status_t result;
-    if (!newArchive) {
-        /*
-         * Load the central directory.  If that fails, then this probably
-         * isn't a Zip archive.
-         */
-        result = readCentralDir();
-    } else {
-        /*
-         * Newly-created.  The EndOfCentralDir constructor actually
-         * sets everything to be the way we want it (all zeroes).  We
-         * set mNeedCDRewrite so that we create *something* if the
-         * caller doesn't add any files.  (We could also just unlink
-         * the file if it's brand new and nothing was added, but that's
-         * probably doing more than we really should -- the user might
-         * have a need for empty zip files.)
-         */
-        mNeedCDRewrite = true;
-        result = NO_ERROR;
-    }
-
-    if (flags & kOpenReadOnly)
-        mReadOnly = true;
-    else
-        assert(!mReadOnly);
-
-    return result;
-}
-
-/*
- * Return the Nth entry in the archive.
- */
-ZipEntry* ZipFile::getEntryByIndex(int idx) const
-{
-    if (idx < 0 || idx >= (int) mEntries.size())
-        return NULL;
-
-    return mEntries[idx];
-}
-
-/*
- * Find an entry by name.
- */
-ZipEntry* ZipFile::getEntryByName(const char* fileName) const
-{
-    /*
-     * Do a stupid linear string-compare search.
-     *
-     * There are various ways to speed this up, especially since it's rare
-     * to intermingle changes to the archive with "get by name" calls.  We
-     * don't want to sort the mEntries vector itself, however, because
-     * it's used to recreate the Central Directory.
-     *
-     * (Hash table works, parallel list of pointers in sorted order is good.)
-     */
-    int idx;
-
-    for (idx = mEntries.size()-1; idx >= 0; idx--) {
-        ZipEntry* pEntry = mEntries[idx];
-        if (!pEntry->getDeleted() &&
-            strcmp(fileName, pEntry->getFileName()) == 0)
-        {
-            return pEntry;
-        }
-    }
-
-    return NULL;
-}
-
-/*
- * Empty the mEntries vector.
- */
-void ZipFile::discardEntries(void)
-{
-    int count = mEntries.size();
-
-    while (--count >= 0)
-        delete mEntries[count];
-
-    mEntries.clear();
-}
-
-
-/*
- * Find the central directory and read the contents.
- *
- * The fun thing about ZIP archives is that they may or may not be
- * readable from start to end.  In some cases, notably for archives
- * that were written to stdout, the only length information is in the
- * central directory at the end of the file.
- *
- * Of course, the central directory can be followed by a variable-length
- * comment field, so we have to scan through it backwards.  The comment
- * is at most 64K, plus we have 18 bytes for the end-of-central-dir stuff
- * itself, plus apparently sometimes people throw random junk on the end
- * just for the fun of it.
- *
- * This is all a little wobbly.  If the wrong value ends up in the EOCD
- * area, we're hosed.  This appears to be the way that everbody handles
- * it though, so we're in pretty good company if this fails.
- */
-status_t ZipFile::readCentralDir(void)
-{
-    status_t result = NO_ERROR;
-    unsigned char* buf = NULL;
-    off_t fileLength, seekStart;
-    long readAmount;
-    int i;
-
-    fseek(mZipFp, 0, SEEK_END);
-    fileLength = ftell(mZipFp);
-    rewind(mZipFp);
-
-    /* too small to be a ZIP archive? */
-    if (fileLength < EndOfCentralDir::kEOCDLen) {
-        LOGD("Length is %ld -- too small\n", (long)fileLength);
-        result = INVALID_OPERATION;
-        goto bail;
-    }
-
-    buf = new unsigned char[EndOfCentralDir::kMaxEOCDSearch];
-    if (buf == NULL) {
-		LOGD("Failure allocating %d bytes for EOCD search",
-			 EndOfCentralDir::kMaxEOCDSearch);
-        result = NO_MEMORY;
-        goto bail;
-    }
-
-    if (fileLength > EndOfCentralDir::kMaxEOCDSearch) {
-        seekStart = fileLength - EndOfCentralDir::kMaxEOCDSearch;
-        readAmount = EndOfCentralDir::kMaxEOCDSearch;
-    } else {
-        seekStart = 0;
-        readAmount = (long) fileLength;
-    }
-    if (fseek(mZipFp, seekStart, SEEK_SET) != 0) {
-		LOGD("Failure seeking to end of zip at %ld", (long) seekStart);
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    /* read the last part of the file into the buffer */
-    if (fread(buf, 1, readAmount, mZipFp) != (size_t) readAmount) {
-        LOGD("short file? wanted %ld\n", readAmount);
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    /* find the end-of-central-dir magic */
-    for (i = readAmount - 4; i >= 0; i--) {
-        if (buf[i] == 0x50 &&
-            ZipEntry::getLongLE(&buf[i]) == EndOfCentralDir::kSignature)
-        {
-            LOGV("+++ Found EOCD at buf+%d\n", i);
-            break;
-        }
-    }
-    if (i < 0) {
-        LOGD("EOCD not found, not Zip\n");
-        result = INVALID_OPERATION;
-        goto bail;
-    }
-
-    /* extract eocd values */
-    result = mEOCD.readBuf(buf + i, readAmount - i);
-    if (result != NO_ERROR) {
-		LOGD("Failure reading %ld bytes of EOCD values", readAmount - i);
-        goto bail;
-	}
-    //mEOCD.dump();
-
-    if (mEOCD.mDiskNumber != 0 || mEOCD.mDiskWithCentralDir != 0 ||
-        mEOCD.mNumEntries != mEOCD.mTotalNumEntries)
-    {
-        LOGD("Archive spanning not supported\n");
-        result = INVALID_OPERATION;
-        goto bail;
-    }
-
-    /*
-     * So far so good.  "mCentralDirSize" is the size in bytes of the
-     * central directory, so we can just seek back that far to find it.
-     * We can also seek forward mCentralDirOffset bytes from the
-     * start of the file.
-     *
-     * We're not guaranteed to have the rest of the central dir in the
-     * buffer, nor are we guaranteed that the central dir will have any
-     * sort of convenient size.  We need to skip to the start of it and
-     * read the header, then the other goodies.
-     *
-     * The only thing we really need right now is the file comment, which
-     * we're hoping to preserve.
-     */
-    if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
-		LOGD("Failure seeking to central dir offset %ld\n",
-			 mEOCD.mCentralDirOffset);
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    /*
-     * Loop through and read the central dir entries.
-     */
-    LOGV("Scanning %d entries...\n", mEOCD.mTotalNumEntries);
-    int entry;
-    for (entry = 0; entry < mEOCD.mTotalNumEntries; entry++) {
-        ZipEntry* pEntry = new ZipEntry;
-
-        result = pEntry->initFromCDE(mZipFp);
-        if (result != NO_ERROR) {
-            LOGD("initFromCDE failed\n");
-            delete pEntry;
-            goto bail;
-        }
-
-        mEntries.add(pEntry);
-    }
-
-
-    /*
-     * If all went well, we should now be back at the EOCD.
-     */
-    {
-        unsigned char checkBuf[4];
-        if (fread(checkBuf, 1, 4, mZipFp) != 4) {
-            LOGD("EOCD check read failed\n");
-            result = INVALID_OPERATION;
-            goto bail;
-        }
-        if (ZipEntry::getLongLE(checkBuf) != EndOfCentralDir::kSignature) {
-            LOGD("EOCD read check failed\n");
-            result = UNKNOWN_ERROR;
-            goto bail;
-        }
-        LOGV("+++ EOCD read check passed\n");
-    }
-
-bail:
-    delete[] buf;
-    return result;
-}
-
-
-/*
- * Add a new file to the archive.
- *
- * This requires creating and populating a ZipEntry structure, and copying
- * the data into the file at the appropriate position.  The "appropriate
- * position" is the current location of the central directory, which we
- * casually overwrite (we can put it back later).
- *
- * If we were concerned about safety, we would want to make all changes
- * in a temp file and then overwrite the original after everything was
- * safely written.  Not really a concern for us.
- */
-status_t ZipFile::addCommon(const char* fileName, const void* data, size_t size,
-    const char* storageName, int sourceType, int compressionMethod,
-    ZipEntry** ppEntry)
-{
-    ZipEntry* pEntry = NULL;
-    status_t result = NO_ERROR;
-    long lfhPosn, startPosn, endPosn, uncompressedLen;
-    FILE* inputFp = NULL;
-    unsigned long crc;
-    time_t modWhen;
-
-    if (mReadOnly)
-        return INVALID_OPERATION;
-
-    assert(compressionMethod == ZipEntry::kCompressDeflated ||
-           compressionMethod == ZipEntry::kCompressStored);
-
-    /* make sure we're in a reasonable state */
-    assert(mZipFp != NULL);
-    assert(mEntries.size() == mEOCD.mTotalNumEntries);
-
-    /* make sure it doesn't already exist */
-    if (getEntryByName(storageName) != NULL)
-        return ALREADY_EXISTS;
-
-    if (!data) {
-        inputFp = fopen(fileName, FILE_OPEN_RO);
-        if (inputFp == NULL)
-            return errnoToStatus(errno);
-    }
-
-    if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    pEntry = new ZipEntry;
-    pEntry->initNew(storageName, NULL);
-
-    /*
-     * From here on out, failures are more interesting.
-     */
-    mNeedCDRewrite = true;
-
-    /*
-     * Write the LFH, even though it's still mostly blank.  We need it
-     * as a place-holder.  In theory the LFH isn't necessary, but in
-     * practice some utilities demand it.
-     */
-    lfhPosn = ftell(mZipFp);
-    pEntry->mLFH.write(mZipFp);
-    startPosn = ftell(mZipFp);
-
-    /*
-     * Copy the data in, possibly compressing it as we go.
-     */
-    if (sourceType == ZipEntry::kCompressStored) {
-        if (compressionMethod == ZipEntry::kCompressDeflated) {
-            bool failed = false;
-            result = compressFpToFp(mZipFp, inputFp, data, size, &crc);
-            if (result != NO_ERROR) {
-                LOGD("compression failed, storing\n");
-                failed = true;
-            } else {
-                /*
-                 * Make sure it has compressed "enough".  This probably ought
-                 * to be set through an API call, but I don't expect our
-                 * criteria to change over time.
-                 */
-                long src = inputFp ? ftell(inputFp) : size;
-                long dst = ftell(mZipFp) - startPosn;
-                if (dst + (dst / 10) > src) {
-                    LOGD("insufficient compression (src=%ld dst=%ld), storing\n",
-                        src, dst);
-                    failed = true;
-                }
-            }
-
-            if (failed) {
-                compressionMethod = ZipEntry::kCompressStored;
-                if (inputFp) rewind(inputFp);
-                fseek(mZipFp, startPosn, SEEK_SET);
-                /* fall through to kCompressStored case */
-            }
-        }
-        /* handle "no compression" request, or failed compression from above */
-        if (compressionMethod == ZipEntry::kCompressStored) {
-            if (inputFp) {
-                result = copyFpToFp(mZipFp, inputFp, &crc);
-            } else {
-                result = copyDataToFp(mZipFp, data, size, &crc);
-            }
-            if (result != NO_ERROR) {
-                // don't need to truncate; happens in CDE rewrite
-                LOGD("failed copying data in\n");
-                goto bail;
-            }
-        }
-
-        // currently seeked to end of file
-        uncompressedLen = inputFp ? ftell(inputFp) : size;
-    } else if (sourceType == ZipEntry::kCompressDeflated) {
-        /* we should support uncompressed-from-compressed, but it's not
-         * important right now */
-        assert(compressionMethod == ZipEntry::kCompressDeflated);
-
-        bool scanResult;
-        int method;
-        long compressedLen;
-
-        scanResult = ZipUtils::examineGzip(inputFp, &method, &uncompressedLen,
-                        &compressedLen, &crc);
-        if (!scanResult || method != ZipEntry::kCompressDeflated) {
-            LOGD("this isn't a deflated gzip file?");
-            result = UNKNOWN_ERROR;
-            goto bail;
-        }
-
-        result = copyPartialFpToFp(mZipFp, inputFp, compressedLen, NULL);
-        if (result != NO_ERROR) {
-            LOGD("failed copying gzip data in\n");
-            goto bail;
-        }
-    } else {
-        assert(false);
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    /*
-     * We could write the "Data Descriptor", but there doesn't seem to
-     * be any point since we're going to go back and write the LFH.
-     *
-     * Update file offsets.
-     */
-    endPosn = ftell(mZipFp);            // seeked to end of compressed data
-
-    /*
-     * Success!  Fill out new values.
-     */
-    pEntry->setDataInfo(uncompressedLen, endPosn - startPosn, crc,
-        compressionMethod);
-    modWhen = getModTime(inputFp ? fileno(inputFp) : fileno(mZipFp));
-    pEntry->setModWhen(modWhen);
-    pEntry->setLFHOffset(lfhPosn);
-    mEOCD.mNumEntries++;
-    mEOCD.mTotalNumEntries++;
-    mEOCD.mCentralDirSize = 0;      // mark invalid; set by flush()
-    mEOCD.mCentralDirOffset = endPosn;
-
-    /*
-     * Go back and write the LFH.
-     */
-    if (fseek(mZipFp, lfhPosn, SEEK_SET) != 0) {
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-    pEntry->mLFH.write(mZipFp);
-
-    /*
-     * Add pEntry to the list.
-     */
-    mEntries.add(pEntry);
-    if (ppEntry != NULL)
-        *ppEntry = pEntry;
-    pEntry = NULL;
-
-bail:
-    if (inputFp != NULL)
-        fclose(inputFp);
-    delete pEntry;
-    return result;
-}
-
-/*
- * Add an entry by copying it from another zip file.  If "padding" is
- * nonzero, the specified number of bytes will be added to the "extra"
- * field in the header.
- *
- * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
- */
-status_t ZipFile::add(const ZipFile* pSourceZip, const ZipEntry* pSourceEntry,
-    int padding, ZipEntry** ppEntry)
-{
-    ZipEntry* pEntry = NULL;
-    status_t result;
-    long lfhPosn, endPosn;
-
-    if (mReadOnly)
-        return INVALID_OPERATION;
-
-    /* make sure we're in a reasonable state */
-    assert(mZipFp != NULL);
-    assert(mEntries.size() == mEOCD.mTotalNumEntries);
-
-    if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0) {
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    pEntry = new ZipEntry;
-    if (pEntry == NULL) {
-        result = NO_MEMORY;
-        goto bail;
-    }
-
-    result = pEntry->initFromExternal(pSourceZip, pSourceEntry);
-    if (result != NO_ERROR)
-        goto bail;
-    if (padding != 0) {
-        result = pEntry->addPadding(padding);
-        if (result != NO_ERROR)
-            goto bail;
-    }
-
-    /*
-     * From here on out, failures are more interesting.
-     */
-    mNeedCDRewrite = true;
-
-    /*
-     * Write the LFH.  Since we're not recompressing the data, we already
-     * have all of the fields filled out.
-     */
-    lfhPosn = ftell(mZipFp);
-    pEntry->mLFH.write(mZipFp);
-
-    /*
-     * Copy the data over.
-     *
-     * If the "has data descriptor" flag is set, we want to copy the DD
-     * fields as well.  This is a fixed-size area immediately following
-     * the data.
-     */
-    if (fseek(pSourceZip->mZipFp, pSourceEntry->getFileOffset(), SEEK_SET) != 0)
-    {
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    off_t copyLen;
-    copyLen = pSourceEntry->getCompressedLen();
-    if ((pSourceEntry->mLFH.mGPBitFlag & ZipEntry::kUsesDataDescr) != 0)
-        copyLen += ZipEntry::kDataDescriptorLen;
-
-    if (copyPartialFpToFp(mZipFp, pSourceZip->mZipFp, copyLen, NULL)
-        != NO_ERROR)
-    {
-        LOGW("copy of '%s' failed\n", pEntry->mCDE.mFileName);
-        result = UNKNOWN_ERROR;
-        goto bail;
-    }
-
-    /*
-     * Update file offsets.
-     */
-    endPosn = ftell(mZipFp);
-
-    /*
-     * Success!  Fill out new values.
-     */
-    pEntry->setLFHOffset(lfhPosn);      // sets mCDE.mLocalHeaderRelOffset
-    mEOCD.mNumEntries++;
-    mEOCD.mTotalNumEntries++;
-    mEOCD.mCentralDirSize = 0;      // mark invalid; set by flush()
-    mEOCD.mCentralDirOffset = endPosn;
-
-    /*
-     * Add pEntry to the list.
-     */
-    mEntries.add(pEntry);
-    if (ppEntry != NULL)
-        *ppEntry = pEntry;
-    pEntry = NULL;
-
-    result = NO_ERROR;
-
-bail:
-    delete pEntry;
-    return result;
-}
-
-/*
- * Copy all of the bytes in "src" to "dst".
- *
- * On exit, "srcFp" will be seeked to the end of the file, and "dstFp"
- * will be seeked immediately past the data.
- */
-status_t ZipFile::copyFpToFp(FILE* dstFp, FILE* srcFp, unsigned long* pCRC32)
-{
-    unsigned char tmpBuf[32768];
-    size_t count;
-
-    *pCRC32 = crc32(0L, Z_NULL, 0);
-
-    while (1) {
-        count = fread(tmpBuf, 1, sizeof(tmpBuf), srcFp);
-        if (ferror(srcFp) || ferror(dstFp))
-            return errnoToStatus(errno);
-        if (count == 0)
-            break;
-
-        *pCRC32 = crc32(*pCRC32, tmpBuf, count);
-
-        if (fwrite(tmpBuf, 1, count, dstFp) != count) {
-            LOGD("fwrite %d bytes failed\n", (int) count);
-            return UNKNOWN_ERROR;
-        }
-    }
-
-    return NO_ERROR;
-}
-
-/*
- * Copy all of the bytes in "src" to "dst".
- *
- * On exit, "dstFp" will be seeked immediately past the data.
- */
-status_t ZipFile::copyDataToFp(FILE* dstFp,
-    const void* data, size_t size, unsigned long* pCRC32)
-{
-    size_t count;
-
-    *pCRC32 = crc32(0L, Z_NULL, 0);
-    if (size > 0) {
-        *pCRC32 = crc32(*pCRC32, (const unsigned char*)data, size);
-        if (fwrite(data, 1, size, dstFp) != size) {
-            LOGD("fwrite %d bytes failed\n", (int) size);
-            return UNKNOWN_ERROR;
-        }
-    }
-
-    return NO_ERROR;
-}
-
-/*
- * Copy some of the bytes in "src" to "dst".
- *
- * If "pCRC32" is NULL, the CRC will not be computed.
- *
- * On exit, "srcFp" will be seeked to the end of the file, and "dstFp"
- * will be seeked immediately past the data just written.
- */
-status_t ZipFile::copyPartialFpToFp(FILE* dstFp, FILE* srcFp, long length,
-    unsigned long* pCRC32)
-{
-    unsigned char tmpBuf[32768];
-    size_t count;
-
-    if (pCRC32 != NULL)
-        *pCRC32 = crc32(0L, Z_NULL, 0);
-
-    while (length) {
-        long readSize;
-        
-        readSize = sizeof(tmpBuf);
-        if (readSize > length)
-            readSize = length;
-
-        count = fread(tmpBuf, 1, readSize, srcFp);
-        if ((long) count != readSize) {     // error or unexpected EOF
-            LOGD("fread %d bytes failed\n", (int) readSize);
-            return UNKNOWN_ERROR;
-        }
-
-        if (pCRC32 != NULL)
-            *pCRC32 = crc32(*pCRC32, tmpBuf, count);
-
-        if (fwrite(tmpBuf, 1, count, dstFp) != count) {
-            LOGD("fwrite %d bytes failed\n", (int) count);
-            return UNKNOWN_ERROR;
-        }
-
-        length -= readSize;
-    }
-
-    return NO_ERROR;
-}
-
-/*
- * Compress all of the data in "srcFp" and write it to "dstFp".
- *
- * On exit, "srcFp" will be seeked to the end of the file, and "dstFp"
- * will be seeked immediately past the compressed data.
- */
-status_t ZipFile::compressFpToFp(FILE* dstFp, FILE* srcFp,
-    const void* data, size_t size, unsigned long* pCRC32)
-{
-    status_t result = NO_ERROR;
-	const size_t kBufSize = 32768;
-	unsigned char* inBuf = NULL;
-	unsigned char* outBuf = NULL;
-	z_stream zstream;
-    bool atEof = false;     // no feof() aviailable yet
-	unsigned long crc;
-	int zerr;
-
-	/*
-	 * Create an input buffer and an output buffer.
-	 */
-	inBuf = new unsigned char[kBufSize];
-	outBuf = new unsigned char[kBufSize];
-	if (inBuf == NULL || outBuf == NULL) {
-		result = NO_MEMORY;
-		goto bail;
-	}
-
-	/*
-	 * Initialize the zlib stream.
-	 */
-	memset(&zstream, 0, sizeof(zstream));
-	zstream.zalloc = Z_NULL;
-	zstream.zfree = Z_NULL;
-	zstream.opaque = Z_NULL;
-	zstream.next_in = NULL;
-	zstream.avail_in = 0;
-	zstream.next_out = outBuf;
-	zstream.avail_out = kBufSize;
-	zstream.data_type = Z_UNKNOWN;
-
-	zerr = deflateInit2(&zstream, Z_BEST_COMPRESSION,
-		Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
-	if (zerr != Z_OK) {
-		result = UNKNOWN_ERROR;
-		if (zerr == Z_VERSION_ERROR) {
-			LOGE("Installed zlib is not compatible with linked version (%s)\n",
-				ZLIB_VERSION);
-		} else {
-			LOGD("Call to deflateInit2 failed (zerr=%d)\n", zerr);
-		}
-		goto bail;
-	}
-
- 	crc = crc32(0L, Z_NULL, 0);
-
-	/*
-	 * Loop while we have data.
-	 */
-	do {
-		size_t getSize;
-		int flush;
-
-		/* only read if the input buffer is empty */
-		if (zstream.avail_in == 0 && !atEof) {
-            LOGV("+++ reading %d bytes\n", (int)kBufSize);
-            if (data) {
-                getSize = size > kBufSize ? kBufSize : size;
-                memcpy(inBuf, data, getSize);
-                data = ((const char*)data) + getSize;
-                size -= getSize;
-            } else {
-                getSize = fread(inBuf, 1, kBufSize, srcFp);
-                if (ferror(srcFp)) {
-                    LOGD("deflate read failed (errno=%d)\n", errno);
-                    goto z_bail;
-                }
-            }
-            if (getSize < kBufSize) {
-                LOGV("+++  got %d bytes, EOF reached\n",
-                    (int)getSize);
-                atEof = true;
-            }
-
-			crc = crc32(crc, inBuf, getSize);
-
-			zstream.next_in = inBuf;
-			zstream.avail_in = getSize;
-		}
-
-		if (atEof)
-			flush = Z_FINISH;       /* tell zlib that we're done */
-		else
-			flush = Z_NO_FLUSH;     /* more to come! */
-
-		zerr = deflate(&zstream, flush);
-		if (zerr != Z_OK && zerr != Z_STREAM_END) {
-			LOGD("zlib deflate call failed (zerr=%d)\n", zerr);
-			result = UNKNOWN_ERROR;
-			goto z_bail;
-		}
-
-		/* write when we're full or when we're done */
-		if (zstream.avail_out == 0 ||
-			(zerr == Z_STREAM_END && zstream.avail_out != (uInt) kBufSize))
-		{
-			LOGV("+++ writing %d bytes\n", (int) (zstream.next_out - outBuf));
-            if (fwrite(outBuf, 1, zstream.next_out - outBuf, dstFp) !=
-                (size_t)(zstream.next_out - outBuf))
-            {
-				LOGD("write %d failed in deflate\n",
-                    (int) (zstream.next_out - outBuf));
-				goto z_bail;
-			}
-
-			zstream.next_out = outBuf;
-			zstream.avail_out = kBufSize;
-		}
-	} while (zerr == Z_OK);
-
-	assert(zerr == Z_STREAM_END);       /* other errors should've been caught */
-
-	*pCRC32 = crc;
-
-z_bail:
-	deflateEnd(&zstream);        /* free up any allocated structures */
-
-bail:
-	delete[] inBuf;
-	delete[] outBuf;
-
-	return result;
-}
-
-/*
- * Mark an entry as deleted.
- *
- * We will eventually need to crunch the file down, but if several files
- * are being removed (perhaps as part of an "update" process) we can make
- * things considerably faster by deferring the removal to "flush" time.
- */
-status_t ZipFile::remove(ZipEntry* pEntry)
-{
-    /*
-     * Should verify that pEntry is actually part of this archive, and
-     * not some stray ZipEntry from a different file.
-     */
-
-    /* mark entry as deleted, and mark archive as dirty */
-    pEntry->setDeleted();
-    mNeedCDRewrite = true;
-    return NO_ERROR;
-}
-
-/*
- * Flush any pending writes.
- *
- * In particular, this will crunch out deleted entries, and write the
- * Central Directory and EOCD if we have stomped on them.
- */
-status_t ZipFile::flush(void)
-{
-    status_t result = NO_ERROR;
-    long eocdPosn;
-    int i, count;
-
-    if (mReadOnly)
-        return INVALID_OPERATION;
-    if (!mNeedCDRewrite)
-        return NO_ERROR;
-
-    assert(mZipFp != NULL);
-
-    result = crunchArchive();
-    if (result != NO_ERROR)
-        return result;
-
-    if (fseek(mZipFp, mEOCD.mCentralDirOffset, SEEK_SET) != 0)
-        return UNKNOWN_ERROR;
-
-    count = mEntries.size();
-    for (i = 0; i < count; i++) {
-        ZipEntry* pEntry = mEntries[i];
-        pEntry->mCDE.write(mZipFp);
-    }
-
-    eocdPosn = ftell(mZipFp);
-    mEOCD.mCentralDirSize = eocdPosn - mEOCD.mCentralDirOffset;
-
-    mEOCD.write(mZipFp);
-
-    /*
-     * If we had some stuff bloat up during compression and get replaced
-     * with plain files, or if we deleted some entries, there's a lot
-     * of wasted space at the end of the file.  Remove it now.
-     */
-    if (ftruncate(fileno(mZipFp), ftell(mZipFp)) != 0) {
-        LOGW("ftruncate failed %ld: %s\n", ftell(mZipFp), strerror(errno));
-        // not fatal
-    }
-
-    /* should we clear the "newly added" flag in all entries now? */
-
-    mNeedCDRewrite = false;
-    return NO_ERROR;
-}
-
-/*
- * Crunch deleted files out of an archive by shifting the later files down.
- *
- * Because we're not using a temp file, we do the operation inside the
- * current file.
- */
-status_t ZipFile::crunchArchive(void)
-{
-    status_t result = NO_ERROR;
-    int i, count;
-    long delCount, adjust;
-
-#if 0
-    printf("CONTENTS:\n");
-    for (i = 0; i < (int) mEntries.size(); i++) {
-        printf(" %d: lfhOff=%ld del=%d\n",
-            i, mEntries[i]->getLFHOffset(), mEntries[i]->getDeleted());
-    }
-    printf("  END is %ld\n", (long) mEOCD.mCentralDirOffset);
-#endif
-
-    /*
-     * Roll through the set of files, shifting them as appropriate.  We
-     * could probably get a slight performance improvement by sliding
-     * multiple files down at once (because we could use larger reads
-     * when operating on batches of small files), but it's not that useful.
-     */
-    count = mEntries.size();
-    delCount = adjust = 0;
-    for (i = 0; i < count; i++) {
-        ZipEntry* pEntry = mEntries[i];
-        long span;
-
-        if (pEntry->getLFHOffset() != 0) {
-            long nextOffset;
-
-            /* Get the length of this entry by finding the offset
-             * of the next entry.  Directory entries don't have
-             * file offsets, so we need to find the next non-directory
-             * entry.
-             */
-            nextOffset = 0;
-            for (int ii = i+1; nextOffset == 0 && ii < count; ii++)
-                nextOffset = mEntries[ii]->getLFHOffset();
-            if (nextOffset == 0)
-                nextOffset = mEOCD.mCentralDirOffset;
-            span = nextOffset - pEntry->getLFHOffset();
-
-            assert(span >= ZipEntry::LocalFileHeader::kLFHLen);
-        } else {
-            /* This is a directory entry.  It doesn't have
-             * any actual file contents, so there's no need to
-             * move anything.
-             */
-            span = 0;
-        }
-
-        //printf("+++ %d: off=%ld span=%ld del=%d [count=%d]\n",
-        //    i, pEntry->getLFHOffset(), span, pEntry->getDeleted(), count);
-
-        if (pEntry->getDeleted()) {
-            adjust += span;
-            delCount++;
-
-            delete pEntry;
-            mEntries.removeAt(i);
-
-            /* adjust loop control */
-            count--;
-            i--;
-        } else if (span != 0 && adjust > 0) {
-            /* shuffle this entry back */
-            //printf("+++ Shuffling '%s' back %ld\n",
-            //    pEntry->getFileName(), adjust);
-            result = filemove(mZipFp, pEntry->getLFHOffset() - adjust,
-                        pEntry->getLFHOffset(), span);
-            if (result != NO_ERROR) {
-                /* this is why you use a temp file */
-                LOGE("error during crunch - archive is toast\n");
-                return result;
-            }
-
-            pEntry->setLFHOffset(pEntry->getLFHOffset() - adjust);
-        }
-    }
-
-    /*
-     * Fix EOCD info.  We have to wait until the end to do some of this
-     * because we use mCentralDirOffset to determine "span" for the
-     * last entry.
-     */
-    mEOCD.mCentralDirOffset -= adjust;
-    mEOCD.mNumEntries -= delCount;
-    mEOCD.mTotalNumEntries -= delCount;
-    mEOCD.mCentralDirSize = 0;  // mark invalid; set by flush()
-
-    assert(mEOCD.mNumEntries == mEOCD.mTotalNumEntries);
-    assert(mEOCD.mNumEntries == count);
-
-    return result;
-}
-
-/*
- * Works like memmove(), but on pieces of a file.
- */
-status_t ZipFile::filemove(FILE* fp, off_t dst, off_t src, size_t n)
-{
-    if (dst == src || n <= 0)
-        return NO_ERROR;
-
-    unsigned char readBuf[32768];
-
-    if (dst < src) {
-        /* shift stuff toward start of file; must read from start */
-        while (n != 0) {
-            size_t getSize = sizeof(readBuf);
-            if (getSize > n)
-                getSize = n;
-
-            if (fseek(fp, (long) src, SEEK_SET) != 0) {
-                LOGD("filemove src seek %ld failed\n", (long) src);
-                return UNKNOWN_ERROR;
-            }
-
-            if (fread(readBuf, 1, getSize, fp) != getSize) {
-                LOGD("filemove read %ld off=%ld failed\n",
-                    (long) getSize, (long) src);
-                return UNKNOWN_ERROR;
-            }
-
-            if (fseek(fp, (long) dst, SEEK_SET) != 0) {
-                LOGD("filemove dst seek %ld failed\n", (long) dst);
-                return UNKNOWN_ERROR;
-            }
-
-            if (fwrite(readBuf, 1, getSize, fp) != getSize) {
-                LOGD("filemove write %ld off=%ld failed\n",
-                    (long) getSize, (long) dst);
-                return UNKNOWN_ERROR;
-            }
-
-            src += getSize;
-            dst += getSize;
-            n -= getSize;
-        }
-    } else {
-        /* shift stuff toward end of file; must read from end */
-        assert(false);      // write this someday, maybe
-        return UNKNOWN_ERROR;
-    }
-
-    return NO_ERROR;
-}
-
-
-/*
- * Get the modification time from a file descriptor.
- */
-time_t ZipFile::getModTime(int fd)
-{
-    struct stat sb;
-
-    if (fstat(fd, &sb) < 0) {
-        LOGD("HEY: fstat on fd %d failed\n", fd);
-        return (time_t) -1;
-    }
-
-    return sb.st_mtime;
-}
-
-
-#if 0       /* this is a bad idea */
-/*
- * Get a copy of the Zip file descriptor.
- *
- * We don't allow this if the file was opened read-write because we tend
- * to leave the file contents in an uncertain state between calls to
- * flush().  The duplicated file descriptor should only be valid for reads.
- */
-int ZipFile::getZipFd(void) const
-{
-    if (!mReadOnly)
-        return INVALID_OPERATION;
-    assert(mZipFp != NULL);
-
-    int fd;
-    fd = dup(fileno(mZipFp));
-    if (fd < 0) {
-        LOGD("didn't work, errno=%d\n", errno);
-    }
-
-    return fd;
-}
-#endif
-
-
-#if 0
-/*
- * Expand data.
- */
-bool ZipFile::uncompress(const ZipEntry* pEntry, void* buf) const
-{
-    return false;
-}
-#endif
-
-// free the memory when you're done
-void* ZipFile::uncompress(const ZipEntry* entry)
-{
-    size_t unlen = entry->getUncompressedLen();
-    size_t clen = entry->getCompressedLen();
-
-    void* buf = malloc(unlen);
-    if (buf == NULL) {
-        return NULL;
-    }
-
-    fseek(mZipFp, 0, SEEK_SET);
-
-    off_t offset = entry->getFileOffset();
-    if (fseek(mZipFp, offset, SEEK_SET) != 0) {
-        goto bail;
-    }
-
-    switch (entry->getCompressionMethod())
-    {
-        case ZipEntry::kCompressStored: {
-            ssize_t amt = fread(buf, 1, unlen, mZipFp);
-            if (amt != (ssize_t)unlen) {
-                goto bail;
-            }
-#if 0
-            printf("data...\n");
-            const unsigned char* p = (unsigned char*)buf;
-            const unsigned char* end = p+unlen;
-            for (int i=0; i<32 && p < end; i++) {
-                printf("0x%08x ", (int)(offset+(i*0x10)));
-                for (int j=0; j<0x10 && p < end; j++) {
-                    printf(" %02x", *p);
-                    p++;
-                }
-                printf("\n");
-            }
-#endif
-
-            }
-            break;
-        case ZipEntry::kCompressDeflated: {
-            if (!ZipUtils::inflateToBuffer(mZipFp, buf, unlen, clen)) {
-                goto bail;
-            }
-            }
-            break;
-        default:
-            goto bail;
-    }
-    return buf;
-
-bail:
-    free(buf);
-    return NULL;
-}
-
-
-/*
- * ===========================================================================
- *		ZipFile::EndOfCentralDir
- * ===========================================================================
- */
-
-/*
- * Read the end-of-central-dir fields.
- *
- * "buf" should be positioned at the EOCD signature, and should contain
- * the entire EOCD area including the comment.
- */
-status_t ZipFile::EndOfCentralDir::readBuf(const unsigned char* buf, int len)
-{
-    /* don't allow re-use */
-    assert(mComment == NULL);
-
-    if (len < kEOCDLen) {
-        /* looks like ZIP file got truncated */
-        LOGD(" Zip EOCD: expected >= %d bytes, found %d\n",
-            kEOCDLen, len);
-        return INVALID_OPERATION;
-    }
-
-    /* this should probably be an assert() */
-    if (ZipEntry::getLongLE(&buf[0x00]) != kSignature)
-        return UNKNOWN_ERROR;
-
-    mDiskNumber = ZipEntry::getShortLE(&buf[0x04]);
-    mDiskWithCentralDir = ZipEntry::getShortLE(&buf[0x06]);
-    mNumEntries = ZipEntry::getShortLE(&buf[0x08]);
-    mTotalNumEntries = ZipEntry::getShortLE(&buf[0x0a]);
-    mCentralDirSize = ZipEntry::getLongLE(&buf[0x0c]);
-    mCentralDirOffset = ZipEntry::getLongLE(&buf[0x10]);
-    mCommentLen = ZipEntry::getShortLE(&buf[0x14]);
-
-    // TODO: validate mCentralDirOffset
-
-    if (mCommentLen > 0) {
-        if (kEOCDLen + mCommentLen > len) {
-            LOGD("EOCD(%d) + comment(%d) exceeds len (%d)\n",
-                kEOCDLen, mCommentLen, len);
-            return UNKNOWN_ERROR;
-        }
-        mComment = new unsigned char[mCommentLen];
-        memcpy(mComment, buf + kEOCDLen, mCommentLen);
-    }
-
-    return NO_ERROR;
-}
-
-/*
- * Write an end-of-central-directory section.
- */
-status_t ZipFile::EndOfCentralDir::write(FILE* fp)
-{
-    unsigned char buf[kEOCDLen];
-
-    ZipEntry::putLongLE(&buf[0x00], kSignature);
-    ZipEntry::putShortLE(&buf[0x04], mDiskNumber);
-    ZipEntry::putShortLE(&buf[0x06], mDiskWithCentralDir);
-    ZipEntry::putShortLE(&buf[0x08], mNumEntries);
-    ZipEntry::putShortLE(&buf[0x0a], mTotalNumEntries);
-    ZipEntry::putLongLE(&buf[0x0c], mCentralDirSize);
-    ZipEntry::putLongLE(&buf[0x10], mCentralDirOffset);
-    ZipEntry::putShortLE(&buf[0x14], mCommentLen);
-
-    if (fwrite(buf, 1, kEOCDLen, fp) != kEOCDLen)
-        return UNKNOWN_ERROR;
-    if (mCommentLen > 0) {
-        assert(mComment != NULL);
-        if (fwrite(mComment, mCommentLen, 1, fp) != mCommentLen)
-            return UNKNOWN_ERROR;
-    }
-
-    return NO_ERROR;
-}
-
-/*
- * Dump the contents of an EndOfCentralDir object.
- */
-void ZipFile::EndOfCentralDir::dump(void) const
-{
-    LOGD(" EndOfCentralDir contents:\n");
-    LOGD("  diskNum=%u diskWCD=%u numEnt=%u totalNumEnt=%u\n",
-        mDiskNumber, mDiskWithCentralDir, mNumEntries, mTotalNumEntries);
-    LOGD("  centDirSize=%lu centDirOff=%lu commentLen=%u\n",
-        mCentralDirSize, mCentralDirOffset, mCommentLen);
-}
-