C++ string::length方法代码示例

result_t XmlParser::parse(XmlDocument* doc, exlib::string source)
{
    XmlParser parser(doc, true);

    parser.m_now = doc;
    parser.m_list.push_back(doc);

    XML_Parser xml_parser = XML_ParserCreate(NULL);

    XML_SetParamEntityParsing(xml_parser, XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE);
    XML_SetUserData(xml_parser, &parser);

    XML_SetXmlDeclHandler(xml_parser, XmlDeclHandler);
    XML_SetElementHandler(xml_parser, StartElementHandler, EndElementHandler);
    XML_SetCharacterDataHandler(xml_parser, CharacterDataHandler);
    XML_SetProcessingInstructionHandler(xml_parser, ProcessingInstructionHandler);
    XML_SetCommentHandler(xml_parser, CommentHandler);
    XML_SetCdataSectionHandler(xml_parser, StartCdataSectionHandler, EndCdataSectionHandler);
    XML_SetStartDoctypeDeclHandler(xml_parser, StartDoctypeDeclHandler);

    if (XML_Parse(xml_parser, source.c_str(), (int32_t)source.length(), true) != XML_STATUS_OK) {
        char msg[128];
        sprintf(msg, "XmlParser: error on line %lu at column %lu: %s", XML_GetCurrentLineNumber(xml_parser),
            XML_GetCurrentColumnNumber(xml_parser) + 1,
            XML_ErrorString(XML_GetErrorCode(xml_parser)));

        XML_ParserFree(xml_parser);
        return CHECK_ERROR(Runtime::setError(msg));
    }

    XML_ParserFree(xml_parser);

    return 0;
}

result_t HttpCollection::parseCookie(exlib::string &str)
{
    const char *pstr = str.c_str();
    int32_t nSize = (int32_t) str.length();
    const char *pstrTemp;
    exlib::string strKey, strValue;

    while (nSize)
    {
        while (nSize && *pstr == ' ')
        {
            pstr++;
            nSize--;
        }

        pstrTemp = pstr;
        while (nSize && *pstr != '=' && *pstr != ';')
        {
            pstr++;
            nSize--;
        }

        if (pstr > pstrTemp)
            Url::decodeURI(pstrTemp, (int32_t) (pstr - pstrTemp), strKey, true);
        else
            strKey.clear();

        if (nSize && *pstr == '=')
        {
            nSize--;
            pstr++;
        }

        pstrTemp = pstr;
        while (nSize && *pstr != ';')
        {
            pstr++;
            nSize--;
        }

        if (!strKey.empty())
        {
            if (pstr > pstrTemp)
                Url::decodeURI(pstrTemp, (int32_t) (pstr - pstrTemp), strValue, true);
            else
                strValue.clear();
        }

        if (nSize)
        {
            nSize--;
            pstr++;
        }

        if (!strKey.empty())
            add(strKey, strValue);
    }

    return 0;
}

result_t X509Cert::get_serial(exlib::string &retVal)
{
    mbedtls_x509_crt *crt = get_crt();
    if (!crt)
        return CHECK_ERROR(CALL_E_INVALID_CALL);

    int32_t ret;
    mbedtls_mpi serial;

    mbedtls_mpi_init(&serial);
    ret = mbedtls_mpi_read_binary(&serial, crt->serial.p, crt->serial.len);
    if (ret != 0)
        return CHECK_ERROR(_ssl::setError(ret));

    retVal.resize(8192);
    size_t sz = retVal.length();

    ret = mbedtls_mpi_write_string(&serial, 10, &retVal[0], sz, &sz);
    mbedtls_mpi_free(&serial);
    if (ret != 0)
        return CHECK_ERROR(_ssl::setError(ret));

    retVal.resize(sz - 1);

    return 0;
}

result_t SQLite::execute(exlib::string sql, obj_ptr<DBResult_base> &retVal, AsyncEvent *ac)
{
    if (!m_db)
        return CHECK_ERROR(CALL_E_INVALID_CALL);

    if (!ac)
        return CHECK_ERROR(CALL_E_NOSYNC);

    return execute(sql.c_str(), (int32_t) sql.length(), retVal);
}

result_t X509Crl::load(exlib::string pemCrl)
{
    int32_t ret;

    ret = mbedtls_x509_crl_parse(&m_crl, (const unsigned char *)pemCrl.c_str(),
                                 pemCrl.length() + 1);
    if (ret != 0)
        return CHECK_ERROR(_ssl::setError(ret));

    return 0;
}

result_t base64vlq_base::decode(exlib::string data, v8::Local<v8::Array>& retVal)
{
    static const char decodeTable[] = {
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, 62, -1, 63, /* 2x  !"#$%&'()*+,-./   */
        52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, /* 3x 0123456789:;<=>?   */
        -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 4x @ABCDEFGHIJKLMNO   */
        15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, 63, /* 5X PQRSTUVWXYZ[\]^_   */
        -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, /* 6x `abcdefghijklmno   */
        41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 /* 7X pqrstuvwxyz{\}~DEL */
    };

    const char* _data = data.c_str();
    const char* end = _data + data.length();

    int32_t cnt = 0;

    Isolate* isolate = Isolate::current();
    retVal = v8::Array::New(isolate->m_isolate);

    while (_data < end) {
        uint32_t ch;
        int32_t bits = 0;
        int32_t num = 0;

        while ((ch = utf_getchar(_data, end)) != 0) {
            int32_t byte = (ch > 0x20 && ch < 0x80) ? decodeTable[ch - 0x20] : -1;

            if (byte != -1) {
                num += (byte & 0x1f) << (bits * 5);
                bits++;

                if (!(byte & 0x20))
                    break;
            } else
                break;
        }

        if (num & 1)
            num = -(num >> 1);
        else
            num = num >> 1;

        retVal->Set(cnt++, v8::Number::New(isolate->m_isolate, num));
    }

void Url::parseHost(const char*& url, exlib::string& hostname, exlib::string& port)
{
    const char* p1 = url;
    const char* p2 = NULL;
    char ch;

    if (*p1 == '[') {
        p1++;
        while ((ch = *p1) && (qisxdigit(ch) || ch == ':' || ch == '.'))
            p1++;
        if (ch == ']')
            ch = *++p1;
        else
            url++;
    } else {
        while ((ch = *p1)
            && (qisascii(ch) || qisdigit(ch) || ch == '.' || ch == '_' || ch == '-' || ch < 0))
            p1++;
    }

    if (ch == ':') {
        p2 = p1 + 1;

        while ((ch = *p2) && qisdigit(ch))
            p2++;
    }

    if (*url == '[')
        hostname.assign(url + 1, p1 - url - 2);
    else
        hostname.assign(url, p1 - url);

    if (hostname.length() > 0) {
        qstrlwr(&hostname[0]);
        punycode_base::toASCII(hostname, hostname);
    }
    if (p2)
        port.assign(p1 + 1, p2 - p1 - 1);
    else
        port.clear();

    url = p2 ? p2 : p1;
}

result_t path_base::basename(exlib::string path, exlib::string ext,
                             exlib::string &retVal)
{
    char ch;
    const char* c_str = path.c_str();
    const char *p1 = c_str;
    int32_t extlen = (int32_t)ext.length();

    while (*c_str)
    {
        ch = *c_str++;
        if (isPathSlash(ch))
            p1 = c_str;
    }

    if (extlen && ((int32_t) (c_str - p1) >= extlen)
            && !pathcmp(ext.c_str(), c_str - extlen, extlen))
        c_str -= extlen;

    retVal.assign(p1, (int32_t) (c_str - p1));

    return 0;
}

void std_logger::out(exlib::string& txt)
{

#ifdef _WIN32
    class color_out
    {
    public:
        color_out()
        {
            m_handle = GetStdHandle(STD_OUTPUT_HANDLE);
            m_Now = m_wAttr = 0x7;
            m_wLight = m_wAttr & FOREGROUND_INTENSITY;
        }

        void out(exlib::string& s)
        {
            exlib::wstring ws = utf8to16String(s);
            exlib::wchar *ptr = &ws[0];
            exlib::wchar *pend = ptr + ws.length();
            exlib::wchar *ptr2;
            DWORD dwWrite;

            while (ptr2 = (exlib::wchar *) qstrchr(ptr, L'\x1b'))
            {
                if (ptr2[1] == '[')
                {
                    WriteConsoleW(m_handle, ptr, (DWORD)(ptr2 - ptr), &dwWrite, NULL);

                    ptr2 += 2;

                    while (true)
                    {
                        if (ptr2[0] == 'm')
                        {
                            m_Now = m_wAttr;
                            m_wLight = m_wAttr & FOREGROUND_INTENSITY;
                            SetConsoleTextAttribute(m_handle, m_Now);
                            ptr2 ++;
                            break;
                        }

                        if (qisdigit(ptr2[0]))
                        {
                            if (ptr2[1] == 'm')
                            {
                                if (ptr2[0] == '0')
                                {
                                    m_Now = m_wAttr;
                                    m_wLight = m_wAttr & FOREGROUND_INTENSITY;
                                    SetConsoleTextAttribute(m_handle, m_Now);
                                }
                                ptr2 += 2;
                                break;
                            }

                            WORD mask, val;
                            WORD light = m_wLight;

                            if (ptr2[1] == ';')
                            {
                                if (ptr2[0] == '0')
                                    m_wLight = light = 0;
                                else if (ptr2[0] == '1')
                                    m_wLight = light = FOREGROUND_INTENSITY;
                                ptr2 += 2;
                            }

                            if (ptr2[0] == '3')
                            {
                                mask = 0xf0;
                                ptr2 ++;
                            }
                            else if (ptr2[0] == '4')
                            {
                                mask = 0x0f;
                                ptr2 ++;
                            }
                            else if (ptr2[0] == '9')
                            {
                                mask = 0xf0;
                                light |= FOREGROUND_INTENSITY;
                                ptr2 ++;
                            }
                            else if (ptr2[0] == '1' && ptr2[1] == '0')
                            {
                                mask = 0x0f;
                                light |= FOREGROUND_INTENSITY << 4;
                                ptr2 += 2;
                            }
                            else
                                break;

                            if (!qisdigit(ptr2[0]))
                                break;

                            val = ptr2[0] - '0';

                            if (val != 8)
                            {
                                if (val == 9)
//.........这里部分代码省略.........

void std_logger::out(exlib::string& txt)
{
    fwrite(txt.c_str(), 1, txt.length(), stdout);
}

result_t db_base::escape(exlib::string str, bool mysql, exlib::string& retVal)
{
    _escape(str.c_str(), (int32_t)str.length(), mysql, retVal);
    return 0;
}

result_t HttpCollection::parse(exlib::string& str, const char* sep, const char* eq)
{
    const char* pstr = str.c_str();
    int32_t nSize = (int32_t)str.length();
    const char* pstrTemp;
    exlib::string strKey, strValue;
    int32_t sep_len = (int32_t)qstrlen(sep);
    int32_t eq_len = (int32_t)qstrlen(eq);
    bool found_eq;

    while (nSize) {
        pstrTemp = pstr;
        found_eq = false;

        while (nSize) {
            if (!qstrcmp(pstr, sep, sep_len))
                break;

            if (!qstrcmp(pstr, eq, eq_len)) {
                found_eq = true;
                break;
            }

            pstr++;
            nSize--;
        }

        if (pstr > pstrTemp)
            Url::decodeURI(pstrTemp, (int32_t)(pstr - pstrTemp), strKey, true);
        else
            strKey.clear();

        if (nSize && found_eq) {
            nSize -= eq_len;
            pstr += eq_len;
        }

        pstrTemp = pstr;
        while (nSize && qstrcmp(pstr, sep, sep_len)) {
            pstr++;
            nSize--;
        }

        if (!strKey.empty()) {
            if (pstr > pstrTemp)
                Url::decodeURI(pstrTemp, (int32_t)(pstr - pstrTemp), strValue, true);
            else
                strValue.clear();
        }

        if (nSize) {
            nSize -= sep_len;
            pstr += sep_len;
        }

        if (!strKey.empty())
            add(strKey, strValue);
    }

    return 0;
}

void HttpUploadCollection::parse(exlib::string& str, const char* boundary)
{
    const char* pstr = str.c_str();
    int32_t nSize = (int32_t)str.length();
    exlib::string strName;
    exlib::string strFileName;
    exlib::string strContentType;
    exlib::string strContentTransferEncoding;
    const char *p, *p1, *p2, *szQueryString;
    const char* pstrSplit;
    int32_t uiSplitSize;
    char ch;

    boundary += 20;
    while (*boundary && *boundary == ' ')
        boundary++;

    if (qstricmp(boundary, "boundary=", 9))
        return;

    boundary += 9;
    uiSplitSize = (int32_t)qstrlen(boundary);

    pstrSplit = szQueryString = pstr;

    if (nSize < uiSplitSize + 2 || szQueryString[0] != '-'
        || szQueryString[1] != '-'
        || qstrcmp(szQueryString + 2, boundary, uiSplitSize))
        return;

    uiSplitSize += 2;
    szQueryString += uiSplitSize;
    nSize -= uiSplitSize;

    while (nSize) {
        strFileName.clear();
        strContentType.clear();
        strContentTransferEncoding.clear();

        while (nSize > 0) {
            ch = *szQueryString++;
            nSize--;
            if (ch != '\r')
                return;
            if (nSize > 0 && *szQueryString == '\n') {
                nSize--;
                szQueryString++;
            }

            p = szQueryString;
            while (nSize > 0 && *p != '\r') {
                nSize--;
                p++;
            }

            if (nSize == 0)
                break;

            p1 = szQueryString;
            szQueryString = p;

            if (p != p1) {
                if (p1 + 20 < p && !qstricmp(p1, "Content-Disposition:", 20)) {
                    p1 += 20;
                    while (p1 < p && *p1 == ' ')
                        p1++;
                    if (p1 + 10 >= p || qstricmp(p1, "form-data;", 10))
                        return;

                    p1 += 10;
                    while (p1 < p && *p1 == ' ')
                        p1++;
                    if (p1 + 5 >= p || qstricmp(p1, "name=", 5))
                        return;

                    p1 += 5;

                    while (p1 < p && *p1 == ' ')
                        p1++;

                    ch = ';';
                    if (*p1 == '\"') {
                        p1++;
                        ch = '\"';
                    }

                    p2 = p1;
                    while (p1 < p && *p1 != ch)
                        p1++;

                    strName.assign(p2, (int32_t)(p1 - p2));

                    if (p1 < p && *p1 == '\"')
                        p1++;

                    if (p1 < p && *p1 == ';')
                        p1++;

                    while (p1 < p && *p1 == ' ')
                        p1++;
//.........这里部分代码省略.........

result_t util_base::compile(exlib::string srcname, exlib::string script,
    int32_t mode, obj_ptr<Buffer_base>& retVal)
{
    Isolate* isolate = Isolate::current();
    exlib::string oname = srcname;

    v8::Local<v8::String> soname = isolate->NewFromUtf8(oname);

    v8::Local<v8::Script> code;
    {
        TryCatch try_catch;

        {
            v8::ScriptCompiler::Source script_source(
                isolate->NewFromUtf8(script));

            if (v8::ScriptCompiler::CompileUnbound(
                    isolate->m_isolate, &script_source)
                    .IsEmpty())
                return throwSyntaxError(try_catch);
        }

        const char* args;

        switch (mode) {
        case 1:
            args = main_args;
            break;
        case 2:
            args = script_args;
            break;
        case 3:
            args = worker_args;
            break;
        default:
            args = module_args;
            break;
        }
        script = args + script + "\n});";

        v8::ScriptCompiler::Source script_source(
            isolate->NewFromUtf8(script), v8::ScriptOrigin(soname));

        if (v8::ScriptCompiler::CompileUnbound(
                isolate->m_isolate, &script_source,
                v8::ScriptCompiler::kProduceCodeCache)
                .IsEmpty())
            return throwSyntaxError(try_catch);

        const v8::ScriptCompiler::CachedData* cache = script_source.GetCachedData();

        exlib::string buf((const char*)cache->data, cache->length);

        int32_t len = (int32_t)script.length();
        buf.append((const char*)&len, sizeof(len));

        obj_ptr<Buffer_base> unz = new Buffer(buf);
        return zlib_base::cc_gzip(unz, retVal);
    }

    return 0;
}

void Url::trimUrl(exlib::string url, exlib::string& retVal)
{
    exlib::string rest;
    int32_t start = -1;
    int32_t end = -1;
    int32_t lastPos = 0;
    int32_t i;
    bool isWs;

    bool inWs = false;

    for (i = 0; i < (int32_t)url.length(); i++) {
        isWs = url[i] == 32 || url[i] == 9 || url[i] == 13 || url[i] == 10 || url[i] == 12;

        if (*(unsigned char*)&url[i] == 0xc2 && *(unsigned char*)&url[i + 1] == 0xa0) {
            isWs = true;
            i++;
        }
        if (*(unsigned char*)&url[i] == 239 && *(unsigned char*)&url[i + 1] == 187 && *(unsigned char*)&url[i + 2] == 191) {
            isWs = true;
            i += 2;
        }

        if (start == -1) {
            if (isWs)
                continue;
            lastPos = start = i;
        } else {
            if (inWs) {
                if (!isWs) {
                    end = -1;
                    inWs = false;
                }
            } else if (isWs) {
                end = i;
                inWs = true;
            }
        }
        if (url[i] == 92 && i - lastPos > 0)
            url[i] = '/';
    }

    if (start != -1) {
        if (lastPos == start) {
            if (end == -1) {
                if (start == 0)
                    rest = url;
                else
                    rest = url.substr(start);
            } else {
                rest = url.substr(start, end - start);
            }
        } else if (end == -1 && lastPos < (int32_t)url.length()) {
            // We converted some backslashes and have only part of the entire string
            rest = url.substr(lastPos);
        } else if (end != -1 && lastPos < end) {
            // We converted some backslashes and have only part of the entire string
            rest = url.substr(lastPos, end);
        }
    }
    retVal = rest;
}