1 files changed, 83 insertions, 0 deletions
diff --git a/chrome/browser/metrics/metrics_response.cc b/chrome/browser/metrics/metrics_response.cc
new file mode 100644
index 0000000..1bb6afa
--- /dev/null
+++ b/chrome/browser/metrics/metrics_response.cc
@@ -0,0 +1,83 @@
+// 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 <libxml/parser.h>
+
+#include "chrome/browser/metrics/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;
+}
+
+