C++ (Cpp) json_tokener_error_desc示例

示例#1

文件： ogrcartodatasource.cpp 项目： ryandavid/rotobox

json_object* OGRCARTODataSource::RunSQL(const char* pszUnescapedSQL)
{
    CPLString osSQL("POSTFIELDS=q=");
    /* Do post escaping */
    for(int i=0;pszUnescapedSQL[i] != 0;i++)
    {
        const int ch = ((unsigned char*)pszUnescapedSQL)[i];
        if (ch != '&' && ch >= 32 && ch < 128)
            osSQL += (char)ch;
        else
            osSQL += CPLSPrintf("%%%02X", ch);
    }

/* -------------------------------------------------------------------- */
/*      Provide the API Key                                             */
/* -------------------------------------------------------------------- */
    if( osAPIKey.size() )
    {
        osSQL += "&api_key=";
        osSQL += osAPIKey;
    }

/* -------------------------------------------------------------------- */
/*      Collection the header options and execute request.              */
/* -------------------------------------------------------------------- */
    const char* pszAPIURL = GetAPIURL();
    char** papszOptions = CSLAddString(
        !STARTS_WITH(pszAPIURL, "/vsimem/") ? AddHTTPOptions(): NULL, osSQL);
    CPLHTTPResult * psResult = CPLHTTPFetch( GetAPIURL(), papszOptions);
    CSLDestroy(papszOptions);
    if( psResult == NULL )
        return NULL;

/* -------------------------------------------------------------------- */
/*      Check for some error conditions and report.  HTML Messages      */
/*      are transformed info failure.                                   */
/* -------------------------------------------------------------------- */
    if (psResult->pszContentType &&
        STARTS_WITH(psResult->pszContentType, "text/html"))
    {
        CPLDebug( "CARTO", "RunSQL HTML Response:%s", psResult->pabyData );
        CPLError(CE_Failure, CPLE_AppDefined,
                 "HTML error page returned by server");
        CPLHTTPDestroyResult(psResult);
        return NULL;
    }
    if (psResult->pszErrBuf != NULL)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "RunSQL Error Message:%s", psResult->pszErrBuf );
    }
    else if (psResult->nStatus != 0)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "RunSQL Error Status:%d", psResult->nStatus );
    }

    if( psResult->pabyData == NULL )
    {
        CPLHTTPDestroyResult(psResult);
        return NULL;
    }

    if( strlen((const char*)psResult->pabyData) < 1000 )
        CPLDebug( "CARTO", "RunSQL Response:%s", psResult->pabyData );

    json_tokener* jstok = NULL;
    json_object* poObj = NULL;

    jstok = json_tokener_new();
    poObj = json_tokener_parse_ex(jstok, (const char*) psResult->pabyData, -1);
    if( jstok->err != json_tokener_success)
    {
        CPLError( CE_Failure, CPLE_AppDefined,
                    "JSON parsing error: %s (at offset %d)",
                    json_tokener_error_desc(jstok->err), jstok->char_offset);
        json_tokener_free(jstok);
        CPLHTTPDestroyResult(psResult);
        return NULL;
    }
    json_tokener_free(jstok);

    CPLHTTPDestroyResult(psResult);

    if( poObj != NULL )
    {
        if( json_object_get_type(poObj) == json_type_object )
        {
            json_object* poError = CPL_json_object_object_get(poObj, "error");
            if( poError != NULL && json_object_get_type(poError) == json_type_array &&
                json_object_array_length(poError) > 0 )
            {
                poError = json_object_array_get_idx(poError, 0);
                if( poError != NULL && json_object_get_type(poError) == json_type_string )
                {
                    CPLError(CE_Failure, CPLE_AppDefined,
                            "Error returned by server : %s", json_object_get_string(poError));
                    json_object_put(poObj);
                    return NULL;
                }
            }
        }
        else
        {
            json_object_put(poObj);
            return NULL;
        }
    }

    return poObj;
}

示例#2

文件： jsonobject.hpp 项目： chhitz/p44utils

 JsonError(JsonErrors aError) : Error(ErrorCode(aError), json_tokener_error_desc(aError)) {};