Method copyFpToFp

tools/aapt/ZipFile.cpp:711–734

* 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. */

 * 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) {
            ALOGD("fwrite %d bytes failed\n", (int) count);
            return UNKNOWN_ERROR;
        }
    }

    return NO_ERROR;
}

/*
 * Copy all of the bytes in "src" to "dst".