forked from Public-Mirror/Textractor
139 lines
4.0 KiB
C++
139 lines
4.0 KiB
C++
#include "extension.h"
|
||
#include <cwctype>
|
||
#include <fstream>
|
||
#include <filesystem>
|
||
#include <process.h>
|
||
|
||
extern const wchar_t* REPLACER_INSTRUCTIONS;
|
||
|
||
constexpr auto REPLACE_SAVE_FILE = u8"SavedReplacements.txt";
|
||
|
||
std::atomic<std::filesystem::file_time_type> replaceFileLastWrite = {};
|
||
std::shared_mutex m;
|
||
|
||
class Trie
|
||
{
|
||
public:
|
||
Trie(const std::unordered_map<std::wstring, std::wstring>& replacements)
|
||
{
|
||
for (const auto& [original, replacement] : replacements)
|
||
{
|
||
Node* current = &root;
|
||
for (auto ch : original)
|
||
if (Ignore(ch));
|
||
else if (auto& next = current->next[ch]) current = next.get();
|
||
else current = (next = std::make_unique<Node>()).get();
|
||
if (current != &root) current->value = replacement;
|
||
}
|
||
}
|
||
|
||
std::wstring Replace(const std::wstring& sentence) const
|
||
{
|
||
std::wstring result;
|
||
for (int i = 0; i < sentence.size();)
|
||
{
|
||
std::wstring replacement(1, sentence[i]);
|
||
int originalLength = 1;
|
||
|
||
const Node* current = &root;
|
||
for (int j = i; j < sentence.size() + 1; ++j)
|
||
{
|
||
if (current->value)
|
||
{
|
||
replacement = current->value.value();
|
||
originalLength = j - i;
|
||
}
|
||
if (current->next.count(sentence[j]) > 0) current = current->next.at(sentence[j]).get();
|
||
else if (Ignore(sentence[j]));
|
||
else break;
|
||
}
|
||
|
||
result += replacement;
|
||
i += originalLength;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
private:
|
||
static bool Ignore(wchar_t ch)
|
||
{
|
||
return ch <= 0x20 || std::iswspace(ch);
|
||
}
|
||
|
||
struct Node
|
||
{
|
||
std::unordered_map<wchar_t, std::unique_ptr<Node>> next;
|
||
std::optional<std::wstring> value;
|
||
} root;
|
||
} trie = { {} };
|
||
|
||
std::unordered_map<std::wstring, std::wstring> Parse(const std::wstring& replacementScript)
|
||
{
|
||
std::unordered_map<std::wstring, std::wstring> replacements;
|
||
size_t end = 0;
|
||
while (true)
|
||
{
|
||
size_t original = replacementScript.find(L"|ORIG|", end);
|
||
size_t becomes = replacementScript.find(L"|BECOMES|", original);
|
||
if ((end = replacementScript.find(L"|END|", becomes)) == std::wstring::npos) break;
|
||
replacements[replacementScript.substr(original + 6, becomes - original - 6)] = replacementScript.substr(becomes + 9, end - becomes - 9);
|
||
}
|
||
return replacements;
|
||
}
|
||
|
||
BOOL WINAPI DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
|
||
{
|
||
switch (ul_reason_for_call)
|
||
{
|
||
case DLL_PROCESS_ATTACH:
|
||
{
|
||
std::vector<BYTE> file(std::istreambuf_iterator<char>(std::ifstream(REPLACE_SAVE_FILE, std::ios::in | std::ios::binary)), {});
|
||
if (Parse(std::wstring((wchar_t*)file.data(), file.size() / sizeof(wchar_t))).empty())
|
||
{
|
||
std::ofstream(REPLACE_SAVE_FILE, std::ios::out | std::ios::binary | std::ios::trunc).write((char*)REPLACER_INSTRUCTIONS, wcslen(REPLACER_INSTRUCTIONS) * sizeof(wchar_t));
|
||
_spawnlp(_P_DETACH, "notepad", "notepad", REPLACE_SAVE_FILE, NULL); // show file to user
|
||
}
|
||
}
|
||
break;
|
||
case DLL_PROCESS_DETACH:
|
||
{
|
||
}
|
||
break;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
bool ProcessSentence(std::wstring& sentence, SentenceInfo)
|
||
{
|
||
try
|
||
{
|
||
static_assert(std::has_unique_object_representations_v<decltype(replaceFileLastWrite)::value_type>);
|
||
if (replaceFileLastWrite.exchange(std::filesystem::last_write_time(REPLACE_SAVE_FILE)) != std::filesystem::last_write_time(REPLACE_SAVE_FILE))
|
||
{
|
||
std::scoped_lock l(m);
|
||
std::vector<BYTE> file(std::istreambuf_iterator<char>(std::ifstream(REPLACE_SAVE_FILE, std::ios::in | std::ios::binary)), {});
|
||
trie = Trie(Parse(std::wstring((wchar_t*)file.data(), file.size() / sizeof(wchar_t))));
|
||
}
|
||
}
|
||
catch (std::filesystem::filesystem_error) {}
|
||
|
||
std::shared_lock l(m);
|
||
sentence = trie.Replace(sentence);
|
||
return true;
|
||
}
|
||
|
||
TEST(
|
||
{
|
||
auto replacements = Parse(LR"(
|
||
|ORIG|さよなら|BECOMES|goodbye |END|Ignore this text
|
||
And this text ツ
|
||
|ORIG|バカ|BECOMES|idiot|END|
|
||
|ORIG|こんにちは |BECOMES| hello|END||ORIG|delete this|BECOMES||END|)");
|
||
assert(replacements.size() == 4);
|
||
std::wstring original = LR"(Don't replace this
|
||
さよなら バカ こんにちは delete this)";
|
||
std::wstring replaced = Trie(replacements).Replace(original);
|
||
assert(replaced == L"Don't replace thisgoodbye idiot hello");
|
||
}
|
||
);
|