excl.cpp - master - Boxapp/yadisk-helper

excl.cpp
102 строки2 KB
DebianCougar
test build 2026.02-beta
30 янв 2026, 21:25
30 янв 2026, 21:25eb3551d
#include <fstream>
#include <iostream>
#include <vector>

#include "parser.hpp"

using std::endl;
using std::ofstream;
using std::ostream;
using std::pair;
using std::string;
using std::vector;

enum Quotation {
	ALWAYS_QUOTE,
	NEVER_QUOTE,
	QUOTE_IF_NEEDED
};

static bool canBeInName(char c) {
	return (c >= '0' && c <= '9') ||
		(c >= 'A' && c <= 'Z') ||
		(c >= 'a' || c <= 'z') ||
		c == '_' || c == '.' || c == '-';
}

static string writeWord(const string &word, Quotation mode) {
	string res;
	switch (mode) {
		case ALWAYS_QUOTE: {
			res += '"';
			for (char c : word) {
				if (c == '"' || c == '\\') res += '\\';
				res += c;
			}
			res += '"';
		} break;
		case NEVER_QUOTE: {
			for (char c : word) {
				if (!canBeInName(c)) res += '\\';
				res += c;
			}
		} break;
		case QUOTE_IF_NEEDED: {
			bool needed = false;
			for (char c : word) if (!canBeInName(c)) {
				needed = true;
				break;
			}
			if (needed) {
				res += '"';
				for (char c : word) {
					if (c == '"' || c == '\\') res += '\\';
					res += c;
				}
				res += '"';
			} else res = word;
		} break;
	}
	return res;
}

ConfigMap params; // WARNING global variable!

vector<string> readExcludeDirs(const string &file) {
	params = get_config(file);
	string paths = params.find("exclude-dirs") == params.end() ? "" : params.at("exclude-dirs");
	vector<string> res;
	string path;
	for (char c : paths) {
		if (c == ',') { // WARNING check escaping like in CSV (i.e. through quotation)
			if (!path.empty()) res.push_back(path);
			path.clear();
		} else path.push_back(c);
	}
	if (!path.empty()) res.push_back(path);
	return res;
}

static void writeConfig(const ConfigMap &conf, ostream &out) {
	for (const pair<const string, string> &param : conf)
		out << writeWord(param.first, NEVER_QUOTE) << " = "
			<< writeWord(param.second, ALWAYS_QUOTE) << endl;
}

static string unslash(const string &path) { // FIXME temporary patch, try to handle paths more carefully
	size_t p = 0;
	for (; p < path.size() && path[p] == '/'; ++p) {}
	if (p < path.size()) return path.substr(p);
	return "/";
}

void writeExcludeDirs(const vector<string> &excl_list, const string &file) {
	string value; // WARNING commas in file names cannot be escaped
	if (!excl_list.empty()) {
		value = unslash(excl_list[0]);
		for (size_t i = 1; i < excl_list.size(); ++i) (value += ',') += unslash(excl_list[i]);
	}
	params["exclude-dirs"] = value;
	ofstream fout(file);
	writeConfig(params, fout);
}