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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <limits>
#include "mozHunspellFileMgrHost.h"
#include "mozilla/DebugOnly.h"
#include "nsContentUtils.h"
#include "nsIChannel.h"
#include "nsILoadInfo.h"
#include "nsNetUtil.h"
using namespace mozilla;
mozHunspellFileMgrHost::mozHunspellFileMgrHost(const char* aFilename,
const char* aKey) {
DebugOnly<Result<Ok, nsresult>> result = Open(nsDependentCString(aFilename));
NS_WARNING_ASSERTION(result.value.isOk(), "Failed to open Hunspell file");
}
Result<Ok, nsresult> mozHunspellFileMgrHost::Open(const nsACString& aPath) {
nsCOMPtr<nsIURI> uri;
MOZ_TRY(NS_NewURI(getter_AddRefs(uri), aPath));
nsCOMPtr<nsIChannel> channel;
MOZ_TRY(NS_NewChannel(
getter_AddRefs(channel), uri, nsContentUtils::GetSystemPrincipal(),
nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_INHERITS_SEC_CONTEXT,
nsIContentPolicy::TYPE_OTHER));
MOZ_TRY(channel->Open(getter_AddRefs(mStream)));
return Ok();
}
Result<Ok, nsresult> mozHunspellFileMgrHost::ReadLine(nsACString& aLine) {
if (!mStream) {
return Err(NS_ERROR_NOT_INITIALIZED);
}
bool ok;
MOZ_TRY(NS_ReadLine(mStream.get(), &mLineBuffer, aLine, &ok));
if (!ok) {
mStream = nullptr;
}
mLineNum++;
return Ok();
}
bool mozHunspellFileMgrHost::GetLine(std::string& aResult) {
nsAutoCString line;
auto res = ReadLine(line);
if (res.isErr()) {
return false;
}
aResult.assign(line.BeginReading(), line.Length());
return true;
}
/* static */
uint32_t mozHunspellCallbacks::sCurrentFreshId = 0;
/* static */
mozilla::detail::StaticRWLock mozHunspellCallbacks::sFileMgrMapLock;
/* static */
std::map<uint32_t, std::unique_ptr<mozHunspellFileMgrHost>>
mozHunspellCallbacks::sFileMgrMap;
/* static */
uint32_t mozHunspellCallbacks::CreateFilemgr(const char* aFilename,
const char* aKey) {
mozilla::detail::StaticAutoWriteLock lock(sFileMgrMapLock);
uint32_t freshId = GetFreshId();
sFileMgrMap[freshId] = std::unique_ptr<mozHunspellFileMgrHost>(
new mozHunspellFileMgrHost(aFilename, aKey));
return freshId;
}
/* static */
uint32_t mozHunspellCallbacks::GetFreshId() {
// i is uint64_t to prevent overflow during loop increment which would cause
// an infinite loop
for (uint64_t i = sCurrentFreshId; i < std::numeric_limits<uint32_t>::max();
i++) {
auto it = sFileMgrMap.find(i);
if (it == sFileMgrMap.end()) {
// set sCurrentFreshId to the next (possibly) available id
sCurrentFreshId = i + 1;
return static_cast<uint32_t>(i);
}
}
MOZ_CRASH("Ran out of unique file ids for hunspell dictionaries");
}
/* static */
mozHunspellFileMgrHost& mozHunspellCallbacks::GetMozHunspellFileMgrHost(
uint32_t aFd) {
mozilla::detail::StaticAutoReadLock lock(sFileMgrMapLock);
auto iter = sFileMgrMap.find(aFd);
MOZ_RELEASE_ASSERT(iter != sFileMgrMap.end());
return *(iter->second.get());
}
/* static */
bool mozHunspellCallbacks::GetLine(uint32_t aFd, char** aLinePtr) {
mozHunspellFileMgrHost& inst =
mozHunspellCallbacks::GetMozHunspellFileMgrHost(aFd);
std::string line;
bool ok = inst.GetLine(line);
if (ok) {
*aLinePtr = static_cast<char*>(malloc(line.size() + 1));
strcpy(*aLinePtr, line.c_str());
} else {
*aLinePtr = nullptr;
}
return ok;
}
/* static */
int mozHunspellCallbacks::GetLineNum(uint32_t aFd) {
mozHunspellFileMgrHost& inst =
mozHunspellCallbacks::GetMozHunspellFileMgrHost(aFd);
int num = inst.GetLineNum();
return num;
}
/* static */
void mozHunspellCallbacks::DestructFilemgr(uint32_t aFd) {
mozilla::detail::StaticAutoWriteLock lock(sFileMgrMapLock);
auto iter = sFileMgrMap.find(aFd);
if (iter != sFileMgrMap.end()) {
sFileMgrMap.erase(iter);
}
}
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