// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "chrome/browser/metrics/metrics_response.h" #include "libxml/parser.h" // State to pass around during SAX parsing. struct SAXState { int collectors; int events; int interval; }; // libxml uses xmlChar*, which is unsigned char* inline const char* Char(const xmlChar* input) { return reinterpret_cast<const char*>(input); } static void SAXStartElement(void* user_data, const xmlChar* name, const xmlChar** attrs) { if (!name || !attrs) return; SAXState* state = static_cast<SAXState*>(user_data); if (strcmp(Char(name), "upload") == 0) { for (int i = 0; attrs[i] && attrs[i + i]; i += 2) { if (strcmp(Char(attrs[i]), "interval") == 0) { state->interval = atoi(Char(attrs[i + 1])); return; } } } else if (strcmp(Char(name), "limit") == 0) { for (int i = 0; attrs[i] && attrs[i + 1]; i += 2) { if (strcmp(Char(attrs[i]), "events") == 0) { state->events = atoi(Char(attrs[i + 1])); return; } } } else if (strcmp(Char(name), "collector") == 0) { for (int i = 0; attrs[i] && attrs[i + 1]; i += 2) { if (strcmp(Char(attrs[i]), "type") == 0) { const char* type = Char(attrs[i + 1]); if (strcmp(type, "document") == 0) { state->collectors |= MetricsResponse::COLLECTOR_DOCUMENT; } else if (strcmp(type, "profile") == 0) { state->collectors |= MetricsResponse::COLLECTOR_PROFILE; } else if (strcmp(type, "window") == 0) { state->collectors |= MetricsResponse::COLLECTOR_WINDOW; } else if (strcmp(type, "ui") == 0) { state->collectors |= MetricsResponse::COLLECTOR_UI; } return; } } } } MetricsResponse::MetricsResponse(const std::string& response_xml) : valid_(false), collectors_(COLLECTOR_NONE), events_(0), interval_(0) { if (response_xml.empty()) return; xmlSAXHandler handler = {0}; handler.startElement = SAXStartElement; SAXState state = {0}; valid_ = !xmlSAXUserParseMemory(&handler, &state, response_xml.data(), static_cast<int>(response_xml.size())); collectors_ = state.collectors; events_ = state.events; interval_ = state.interval; }