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/*
Ousía
Copyright (C) 2014, 2015 Benjamin Paaßen, Andreas Stöckel
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <algorithm>
#include <cctype>
#include <string>
#include "Utils.hpp"
namespace ousia {
bool Utils::isIdentifier(const std::string &name)
{
bool first = true;
for (char c : name) {
if (first && !isIdentifierStartCharacter(c)) {
return false;
}
if (!first && !isIdentifierCharacter(c)) {
return false;
}
first = false;
}
return !first;
}
bool Utils::isIdentifierOrEmpty(const std::string &name)
{
return name.empty() || isIdentifier(name);
}
bool Utils::isNamespacedIdentifier(const std::string &name)
{
bool first = true;
for (char c : name) {
if (first && !isIdentifierStartCharacter(c)) {
return false;
}
if (!first && (!isIdentifierCharacter(c) && c != ':')) {
return false;
}
first = (c == ':');
}
return !first;
}
bool Utils::hasNonWhitepaceChar(const std::string &s)
{
for (char c : s) {
if (!isWhitespace(c)) {
return true;
}
}
return false;
}
std::vector<std::string> Utils::split(const std::string &s, char delim)
{
std::vector<std::string> res;
const size_t totalLen = s.size();
size_t start = 0;
size_t len = 0;
for (size_t i = 0; i <= totalLen; i++) {
if (i == totalLen || s[i] == delim) {
res.push_back(s.substr(start, len));
start = i + 1;
len = 0;
} else {
len++;
}
}
return res;
}
std::string Utils::toLower(std::string s)
{
std::transform(s.begin(), s.end(), s.begin(), tolower);
return s;
}
std::string Utils::extractFileExtension(const std::string &filename)
{
size_t n = 0;
for (ssize_t i = filename.size() - 1; i >= 0; i--) {
if (filename[i] == '/' || filename[i] == '\\') {
return std::string{};
}
if (filename[i] == '.') {
return toLower(filename.substr(i + 1, n));
}
n++;
}
return std::string{};
}
bool Utils::startsWith(const std::string &s, const std::string &prefix)
{
return prefix.size() <= s.size() && s.substr(0, prefix.size()) == prefix;
}
bool Utils::endsWith(const std::string &s, const std::string &suffix)
{
return suffix.size() <= s.size() &&
s.substr(s.size() - suffix.size(), suffix.size()) == suffix;
}
bool Utils::isUserDefinedToken(const std::string &token)
{
// Make sure the token meets is neither empty, nor starts or ends with an
// alphanumeric character
const size_t len = token.size();
if (len == 0 || isAlphanumeric(token[0]) ||
isAlphanumeric(token[len - 1])) {
return false;
}
// Make sure the token is not any special OSML token
if (token == "\\" || token == "%" || token == "%{" || token == "}%" ||
token == "{!" || token == "<\\" || token == "\\>") {
return false;
}
// Make sure the token does not contain any whitespaces.
for (char c : token) {
if (isWhitespace(c)) {
return false;
}
}
// Make sure the token contains other characters but { and }
for (char c : token) {
if (c != '{' && c != '}') {
return true;
}
}
return false;
}
}
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