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// 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/autocomplete/shortcuts_provider_shortcut.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/autocomplete/shortcuts_provider.h"
namespace {
// Takes Match classification vector and removes all matched positions,
// compacting repetitions if necessary.
void StripMatchMarkersFromClassifications(ACMatchClassifications* matches) {
DCHECK(matches);
ACMatchClassifications unmatched;
for (ACMatchClassifications::iterator i = matches->begin();
i != matches->end(); ++i) {
shortcuts_provider::AddLastMatchIfNeeded(&unmatched, i->offset,
i->style & ~ACMatchClassification::MATCH);
}
matches->swap(unmatched);
}
} // namespace
namespace shortcuts_provider {
Shortcut::Shortcut(const string16& text,
const GURL& url,
const string16& contents,
const ACMatchClassifications& in_contents_class,
const string16& description,
const ACMatchClassifications& in_description_class)
: text(text),
url(url),
contents(contents),
contents_class(in_contents_class),
description(description),
description_class(in_description_class),
last_access_time(base::Time::Now()),
number_of_hits(1) {
StripMatchMarkersFromClassifications(&contents_class);
StripMatchMarkersFromClassifications(&description_class);
}
Shortcut::Shortcut(const std::string& id,
const string16& text,
const string16& url,
const string16& contents,
const string16& contents_class,
const string16& description,
const string16& description_class,
int64 time_of_last_access,
int number_of_hits)
: id(id),
text(text),
url(url),
contents(contents),
contents_class(SpansFromString(contents_class)),
description(description),
description_class(SpansFromString(description_class)),
last_access_time(base::Time::FromInternalValue(time_of_last_access)),
number_of_hits(1) {}
Shortcut::Shortcut()
: last_access_time(base::Time::Now()),
number_of_hits(0) {}
Shortcut::~Shortcut() {}
string16 Shortcut::contents_class_as_str() const {
return SpansToString(contents_class);
}
string16 Shortcut::description_class_as_str() const {
return SpansToString(description_class);
}
string16 SpansToString(const ACMatchClassifications& value) {
string16 spans;
string16 comma(ASCIIToUTF16(","));
for (size_t i = 0; i < value.size(); ++i) {
if (i)
spans.append(comma);
spans.append(base::IntToString16(value[i].offset));
spans.append(comma);
spans.append(base::IntToString16(value[i].style));
}
return spans;
}
ACMatchClassifications SpansFromString(const string16& value) {
ACMatchClassifications spans;
std::vector<string16> tokens;
Tokenize(value, ASCIIToUTF16(","), &tokens);
// The number of tokens should be even.
if ((tokens.size() & 1) == 1) {
NOTREACHED();
return spans;
}
for (size_t i = 0; i < tokens.size(); i += 2) {
int span_start = 0;
int span_type = ACMatchClassification::NONE;
if (!base::StringToInt(tokens[i], &span_start) ||
!base::StringToInt(tokens[i + 1], &span_type)) {
NOTREACHED();
return spans;
}
spans.push_back(ACMatchClassification(span_start, span_type));
}
return spans;
}
// Adds match at the end if and only if its style is different from the last
// match.
void AddLastMatchIfNeeded(ACMatchClassifications* matches,
int position,
int style) {
DCHECK(matches);
if (matches->empty() || matches->back().style != style)
matches->push_back(ACMatchClassification(position, style));
}
} // namespace shortcuts_provider
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