C++ ZipEntry::getDeleted方法代码示例

/*
 * 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;
}

/*
 * 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;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        result = count;
        goto bail;
    }

    if (bundle->getVerbose()) {
        printf("Generated %d file%s\n", count, (count==1) ? "" : "s");
    }
    
    count = processJarFiles(bundle, zip);
    if (count < 0) {
        fprintf(stderr, "ERROR: unable to process jar files while packaging '%s'\n",
                outputFile.string());
        result = count;
        goto bail;
    }
    
    if (bundle->getVerbose())
        printf("Included %d file%s from jar/zip files.\n", count, (count==1) ? "" : "s");
    
    result = NO_ERROR;

    /*
     * Check for cruft.  We set the "marked" flag on all entries we created
     * or decided not to update.  If the entry isn't already slated for
     * deletion, remove it now.
     */
    {
        if (bundle->getVerbose())
            printf("Checking for deleted files\n");
        int i, removed = 0;
        for (i = 0; i < zip->getNumEntries(); i++) {
            ZipEntry* entry = zip->getEntryByIndex(i);

            if (!entry->getMarked() && entry->getDeleted()) {
                if (bundle->getVerbose()) {
                    printf("      (removing crufty '%s')\n",
                        entry->getFileName());
                }
                zip->remove(entry);
                removed++;
            }
        }
        if (bundle->getVerbose() && removed > 0)
            printf("Removed %d file%s\n", removed, (removed==1) ? "" : "s");
    }

    /* tell Zip lib to process deletions and other pending changes */
    result = zip->flush();
    if (result != NO_ERROR) {
        fprintf(stderr, "ERROR: Zip flush failed, archive may be hosed\n");
        goto bail;
    }

    /* anything here? */
    if (zip->getNumEntries() == 0) {
        if (bundle->getVerbose()) {
            printf("Archive is empty -- removing %s\n", outputFile.getPathLeaf().string());
        }
        delete zip;        // close the file so we can remove it in Win32
        zip = NULL;
        if (unlink(outputFile.string()) != 0) {
            fprintf(stderr, "warning: could not unlink '%s'\n", outputFile.string());
        }
    }

    // If we've been asked to generate a dependency file for the .ap_ package,

//.........这里部分代码省略.........

    status_t status;
    zip = new ZipFile;
    status = zip->open(outputFile.string(), ZipFile::kOpenReadWrite | ZipFile::kOpenCreate);
    if (status != NO_ERROR) {
        fprintf(stderr, "ERROR: unable to open '%s' as Zip file for writing\n",
                outputFile.string());
        goto bail;
    }

    if (bundle->getVerbose()) {
        printf("Writing all files...\n");
    }

    count = processAssets(bundle, zip, assets);
    if (count < 0) {
        fprintf(stderr, "ERROR: unable to process assets while packaging '%s'\n",
                outputFile.string());
        result = count;
        goto bail;
    }

    if (bundle->getVerbose()) {
        printf("Generated %d file%s\n", count, (count==1) ? "" : "s");
    }
    
    count = processJarFiles(bundle, zip);
    if (count < 0) {
        fprintf(stderr, "ERROR: unable to process jar files while packaging '%s'\n",
                outputFile.string());
        result = count;
        goto bail;
    }
    
    if (bundle->getVerbose())
        printf("Included %d file%s from jar/zip files.\n", count, (count==1) ? "" : "s");
    
    result = NO_ERROR;

    /*
     * Check for cruft.  We set the "marked" flag on all entries we created
     * or decided not to update.  If the entry isn't already slated for
     * deletion, remove it now.
     */
    {
        if (bundle->getVerbose())
            printf("Checking for deleted files\n");
        int i, removed = 0;
        for (i = 0; i < zip->getNumEntries(); i++) {
            ZipEntry* entry = zip->getEntryByIndex(i);

            if (!entry->getMarked() && entry->getDeleted()) {
                if (bundle->getVerbose()) {
                    printf("      (removing crufty '%s')\n",
                        entry->getFileName());
                }
                zip->remove(entry);
                removed++;
            }
        }
        if (bundle->getVerbose() && removed > 0)
            printf("Removed %d file%s\n", removed, (removed==1) ? "" : "s");
    }

    /* tell Zip lib to process deletions and other pending changes */
    result = zip->flush();
    if (result != NO_ERROR) {
        fprintf(stderr, "ERROR: Zip flush failed, archive may be hosed\n");
        goto bail;
    }

    /* anything here? */
    if (zip->getNumEntries() == 0) {
        if (bundle->getVerbose()) {
            printf("Archive is empty -- removing %s\n", outputFile.getPathLeaf().string());
        }
        delete zip;        // close the file so we can remove it in Win32
        zip = NULL;
        if (unlink(outputFile.string()) != 0) {
            fprintf(stderr, "WARNING: could not unlink '%s'\n", outputFile.string());
        }
    }

    assert(result == NO_ERROR);

bail:
    delete zip;        // must close before remove in Win32
    if (result != NO_ERROR) {
        if (bundle->getVerbose()) {
            printf("Removing %s due to earlier failures\n", outputFile.string());
        }
        if (unlink(outputFile.string()) != 0) {
            fprintf(stderr, "WARNING: could not unlink '%s'\n", outputFile.string());
        }
    }

    if (result == NO_ERROR && bundle->getVerbose())
        printf("Done!\n");
    return result;
}

/*
 * The directory hierarchy looks like this:
 * "outputDir" and "assetRoot" are existing directories.
 *
 * On success, "bundle->numPackages" will be the number of Zip packages
 * we created.
 */
status_t writeAPK(Bundle* bundle, ZipFile* zip, const char* outputFileName,
                    const sp<OutputSet>& outputSet, bool isOverlay)
{
    status_t result = NO_ERROR;
    int count;

    if (bundle->getVerbose()) {
        printf("Writing all files...\n");
    }

    count = processAssets(bundle, zip, outputSet, isOverlay);
    if (count < 0) {
        fprintf(stderr, "ERROR: unable to process assets while packaging '%s'\n",
                outputFileName);
        result = count;
        goto bail;
    }

    if (bundle->getVerbose()) {
        printf("Generated %d file%s\n", count, (count==1) ? "" : "s");
    }

    if (!isOverlay) {
        count = processJarFiles(bundle, zip);
        if (count < 0) {
            fprintf(stderr, "ERROR: unable to process jar files while packaging '%s'\n",
                    outputFileName);
            result = count;
            goto bail;
        }

        if (bundle->getVerbose())
            printf("Included %d file%s from jar/zip files.\n", count, (count==1) ? "" : "s");
    }

    result = NO_ERROR;

    /*
     * Check for cruft.  We set the "marked" flag on all entries we created
     * or decided not to update.  If the entry isn't already slated for
     * deletion, remove it now.
     */
    {
        if (bundle->getVerbose())
            printf("Checking for deleted files\n");
        int i, removed = 0;
        for (i = 0; i < zip->getNumEntries(); i++) {
            ZipEntry* entry = zip->getEntryByIndex(i);

            if (!entry->getMarked() && entry->getDeleted()) {
                if (bundle->getVerbose()) {
                    printf("      (removing crufty '%s')\n",
                        entry->getFileName());
                }
                zip->remove(entry);
                removed++;
            }
        }
        if (bundle->getVerbose() && removed > 0)
            printf("Removed %d file%s\n", removed, (removed==1) ? "" : "s");
    }

    /* tell Zip lib to process deletions and other pending changes */
    result = zip->flush();
    if (result != NO_ERROR) {
        fprintf(stderr, "ERROR: Zip flush failed, archive may be hosed\n");
        goto bail;
    }

bail:
    return result;
}