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// TestLexers.cxx : Test lexers through Lexilla
//
#include <cassert>
#include <string>
#include <string_view>
#include <vector>
#include <map>
#include <iostream>
#include <sstream>
#include <fstream>
#include <filesystem>
#include "ILexer.h"
#include "TestDocument.h"
#include "LexillaAccess.h"
namespace {
std::string ReadFile(std::filesystem::path path) {
std::ifstream ifs(path, std::ios::binary);
std::string content((std::istreambuf_iterator<char>(ifs)),
(std::istreambuf_iterator<char>()));
return content;
}
std::string MarkedDocument(const Scintilla::IDocument *pdoc) {
std::ostringstream os(std::ios::binary);
char prevStyle = -1;
for (Sci_Position pos = 0; pos < pdoc->Length(); pos++) {
const char styleNow = pdoc->StyleAt(pos);
if (styleNow != prevStyle) {
os << "{" << static_cast<unsigned int>(styleNow) << "}";
prevStyle = styleNow;
}
char ch = '\0';
pdoc->GetCharRange(&ch, pos, 1);
os << ch;
}
return os.str();
}
std::map<std::string, std::string> PropertiesFromFile(std::filesystem::path path) {
std::map<std::string, std::string> m;
std::ifstream ifs(path);
std::string line;
std::string logicalLine;
while (std::getline(ifs, line)) {
logicalLine += line;
if (logicalLine.ends_with("\\")) {
logicalLine.pop_back();
} else {
const size_t positionEquals = logicalLine.find("=");
if (positionEquals != std::string::npos) {
const std::string key = logicalLine.substr(0, positionEquals);
const std::string value = logicalLine.substr(positionEquals+1);
m[key] = value;
}
logicalLine.clear();
}
}
return m;
}
const std::string BOM = "\xEF\xBB\xBF";
bool TestFile(std::filesystem::path path,
std::map<std::string, std::string> properties) {
// Find and create correct lexer
std::string language;
Scintilla::ILexer5 *plex = nullptr;
for (auto const &[key, val] : properties) {
if (key.starts_with("lexer.*")) {
language = val;
plex = CreateLexer(language);
break;
}
}
if (!plex) {
return false;
}
// Set parameters of lexer
const std::string keywords = "keywords";
for (auto const &[key, val] : properties) {
if (key.starts_with("#")) {
// Ignore comments
} else if (key.starts_with("lexer.*")) {
// Ignore
} else if (key.starts_with("keywords")) {
// Get character after keywords
std::string afterKeywords = key.substr(keywords.length(), 1);
char characterAfterKeywords = afterKeywords.empty() ? '1' : afterKeywords[0];
if (characterAfterKeywords < '1' || characterAfterKeywords > '9')
characterAfterKeywords = '1';
const int wordSet = characterAfterKeywords - '1';
plex->WordListSet(wordSet, val.c_str());
} else {
plex->PropertySet(key.c_str(), val.c_str());
}
}
std::string text = ReadFile(path);
if (text.starts_with(BOM)) {
text.erase(0, BOM.length());
}
TestDocument doc;
doc.Set(text);
Scintilla::IDocument *pdoc = &doc;
plex->Lex(0, pdoc->Length(), 0, pdoc);
const std::string styledTextNew = MarkedDocument(pdoc);
std::filesystem::path pathStyled = path;
pathStyled += ".styled";
const std::string styledText = ReadFile(pathStyled);
if (styledTextNew != styledText) {
std::cout << "\n" << path.string() << ":1: is different\n\n";
std::filesystem::path pathNew = path;
pathNew += ".new";
std::ofstream ofs(pathNew, std::ios::binary);
ofs << styledTextNew;
}
return true;
}
bool TestDirectory(std::filesystem::path directory, std::filesystem::path basePath) {
const std::map<std::string, std::string> properties = PropertiesFromFile(directory / "SciTE.properties");
bool success = true;
for (auto &p : std::filesystem::directory_iterator(directory)) {
if (!p.is_directory()) {
const std::string extension = p.path().extension().string();
if (extension != ".properties" && extension != ".styled" && extension != ".new") {
const std::filesystem::path relativePath = p.path().lexically_relative(basePath);
std::cout << "Lexing " << relativePath.string() << '\n';
if (!TestFile(p, properties)) {
success = false;
}
}
}
}
return success;
}
bool AccessLexilla(std::filesystem::path basePath) {
if (!std::filesystem::exists(basePath)) {
std::cout << "No examples at " << basePath.string() << "\n";
return false;
}
bool success = true;
for (auto &p : std::filesystem::recursive_directory_iterator(basePath)) {
if (p.is_directory()) {
//std::cout << p.path().string() << '\n';
if (!TestDirectory(p, basePath)) {
success = false;
}
}
}
return success;
}
std::filesystem::path FindScintillaDirectory(std::filesystem::path startDirectory) {
std::filesystem::path directory = startDirectory;
while (!directory.empty()) {
const std::filesystem::path localScintilla = directory / "scintilla";
const std::filesystem::directory_entry entry(localScintilla);
if (entry.is_directory()) {
std::cout << "Found Scintilla at " << entry.path().string() << "\n";
return localScintilla;
}
const std::filesystem::path parent = directory.parent_path();
if (parent == directory) {
std::cout << "Reached root at " << directory.string() << "\n";
return std::filesystem::path();
}
directory = parent;
}
return std::filesystem::path();
}
}
int main() {
// TODO: Allow specifying the base directory through a command line argument
const std::filesystem::path baseDirectory = FindScintillaDirectory(std::filesystem::current_path());
if (!baseDirectory.empty()) {
if (LoadLexilla(baseDirectory)) {
AccessLexilla(baseDirectory / "lexilla" / "test" / "examples");
}
}
}
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