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Unified Diff: chrome/browser/language_usage_metrics.cc

Issue 7348004: Record language usage as UMA histograms. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Rebased Created 9 years, 5 months ago
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Index: chrome/browser/language_usage_metrics.cc
diff --git a/chrome/browser/language_usage_metrics.cc b/chrome/browser/language_usage_metrics.cc
new file mode 100755
index 0000000000000000000000000000000000000000..818835a54f9b98092e07878866e8dbcb77fb7664
--- /dev/null
+++ b/chrome/browser/language_usage_metrics.cc
@@ -0,0 +1,63 @@
+// Copyright (c) 2011 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/language_usage_metrics.h"
+
+#include <algorithm>
+
+#include "base/metrics/histogram.h"
+#include "base/string_tokenizer.h"
+#include "base/string_util.h"
+
+namespace {
+void RecordAcceptLanguage(Language language) {
+ UMA_HISTOGRAM_ENUMERATION("LanguageUsageMetrics.AcceptLanguage",
+ language, NUM_LANGUAGES);
+}
+} // namespace
+
+// static
+void LanguageUsageMetrics::RecordAcceptLanguages(
+ const std::string& accept_languages) {
+ std::set<Language> languages;
+ ParseAcceptLanguages(accept_languages, &languages);
+ std::for_each(languages.begin(), languages.end(), RecordAcceptLanguage);
+}
+
+// static
+void LanguageUsageMetrics::RecordApplicationLanguage(
+ const std::string& application_locale) {
+ Language language = ToLanguage(application_locale);
+ if (language != UNKNOWN_LANGUAGE) {
+ UMA_HISTOGRAM_ENUMERATION("LanguageUsageMetrics.ApplicationLanguage",
+ language, NUM_LANGUAGES);
+ }
+}
+
+// static
+void LanguageUsageMetrics::ParseAcceptLanguages(
+ const std::string& accept_languages, std::set<Language>* languages) {
+ languages->clear();
+ StringTokenizer locales(accept_languages, ",");
+ while (locales.GetNext()) {
+ Language language = ToLanguage(locales.token());
Yusuke Sato 2011/07/13 06:52:06 nit: add const?
Yuzo 2011/07/13 11:30:20 Done. Also done at line 31 and 57.
+ if (language != UNKNOWN_LANGUAGE) {
+ languages->insert(language);
+ }
+ }
+}
+
+// static
+Language LanguageUsageMetrics::ToLanguage(const std::string& locale) {
+ StringTokenizer parts(locale, "-_");
+ if (!parts.GetNext()) {
+ return UNKNOWN_LANGUAGE;
+ }
+ std::string language_part = parts.token();
Yusuke Sato 2011/07/13 06:52:06 ditto
Yuzo 2011/07/13 11:30:20 Done.
+ Language language;
Yusuke Sato 2011/07/13 06:52:06 ditto
Yuzo 2011/07/13 11:30:20 This is non-const because it will be changed on li
+ if (!LanguageFromCode(language_part.c_str(), &language)) {
+ return UNKNOWN_LANGUAGE;
+ }
+ return language;
+}

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