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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <libxml/parser.h>
#include "chrome/browser/metrics_response.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;
}
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