cef/libcef/common/string_map_impl.cc

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// Copyright (c) 2009 The Chromium Embedded Framework 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 <map>
#include <vector>
#include "base/check_op.h"
#include "cef/include/internal/cef_string_map.h"
namespace {
class StringMap {
using Map = std::map<CefString, CefString>;
using value_type = Map::value_type;
public:
using const_iterator = Map::const_iterator;
size_t size() const { return map_ref_.size(); }
size_t count(const CefString& key) const { return map_.count(key); }
const_iterator find(const CefString& value) const { return map_.find(value); }
const_iterator cend() const { return map_.cend(); }
const value_type& operator[](size_t pos) const { return *map_ref_[pos]; }
void insert(value_type&& value) {
// does not invalidate iterators
const auto [it, inserted] = map_.insert(std::move(value));
if (inserted) {
map_ref_.push_back(std::move(it));
}
}
void clear() {
map_ref_.clear();
map_.clear();
}
private:
Map map_;
std::vector<Map::const_iterator> map_ref_;
};
} // namespace
CEF_EXPORT cef_string_map_t cef_string_map_alloc() {
return reinterpret_cast<cef_string_map_t>(new StringMap);
}
CEF_EXPORT size_t cef_string_map_size(cef_string_map_t map) {
DCHECK(map);
StringMap* impl = reinterpret_cast<StringMap*>(map);
return impl->size();
}
CEF_EXPORT int cef_string_map_find(cef_string_map_t map,
const cef_string_t* key,
cef_string_t* value) {
DCHECK(map);
DCHECK(value);
StringMap* impl = reinterpret_cast<StringMap*>(map);
StringMap::const_iterator it = impl->find(CefString(key));
if (it == impl->cend()) {
return 0;
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}
const CefString& val = it->second;
return cef_string_set(val.c_str(), val.length(), value, true);
}
CEF_EXPORT int cef_string_map_key(cef_string_map_t map,
size_t index,
cef_string_t* key) {
DCHECK(map);
DCHECK(key);
StringMap* impl = reinterpret_cast<StringMap*>(map);
DCHECK_LT(index, impl->size());
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if (index >= impl->size()) {
return 0;
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}
const auto& [k, _] = (*impl)[index];
return cef_string_set(k.c_str(), k.length(), key, true);
}
CEF_EXPORT int cef_string_map_value(cef_string_map_t map,
size_t index,
cef_string_t* value) {
DCHECK(map);
DCHECK(value);
StringMap* impl = reinterpret_cast<StringMap*>(map);
DCHECK_LT(index, impl->size());
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if (index >= impl->size()) {
return 0;
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}
const auto& [_, v] = (*impl)[index];
return cef_string_set(v.c_str(), v.length(), value, true);
}
CEF_EXPORT int cef_string_map_append(cef_string_map_t map,
const cef_string_t* key,
const cef_string_t* value) {
DCHECK(map);
StringMap* impl = reinterpret_cast<StringMap*>(map);
impl->insert(std::make_pair(CefString(key), CefString(value)));
return 1;
}
CEF_EXPORT void cef_string_map_clear(cef_string_map_t map) {
DCHECK(map);
StringMap* impl = reinterpret_cast<StringMap*>(map);
impl->clear();
}
CEF_EXPORT void cef_string_map_free(cef_string_map_t map) {
DCHECK(map);
StringMap* impl = reinterpret_cast<StringMap*>(map);
delete impl;
}