Robin E. R. Davies
249 lines
6.6 KiB
C++
249 lines
6.6 KiB
C++
/*
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* Copyright (c) 2023 Robin E. R. Davies
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* All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "util.hpp"
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#include "ss.hpp"
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#include <pthread.h>
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#include <thread>
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#include <unistd.h> // for gettid()
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#include <codecvt>
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#include <sstream>
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using namespace pipedal;
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void pipedal::SetThreadName(const std::string &name)
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{
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std::string threadName = "ppdl_" + name;
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if (threadName.length () > 15)
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{
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threadName = threadName.substr(0,15);
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}
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pthread_t pid = pthread_self();
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pthread_setname_np(pid,threadName.c_str());
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}
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static const uint8_t utf8extraBytes[256] = {
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
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};
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constexpr char32_t ILLEGAL_CHAR32 = U'⊗';
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static const uint8_t utf8Offset[] = { 0,0b11000000, 0b11100000,0b11110000,0b11111000,0b11111100};
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std::u32string pipedal::ToUtf32(const std::string &s)
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{
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std::basic_stringstream<char32_t> result;
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auto p = s.begin();
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auto end = s.end();
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while (p != end)
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{
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uint8_t c = (uint8_t)(*p++);
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if (c < 0x80)
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{
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result << (char32_t)c;
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} else {
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auto extraBytes = utf8extraBytes[c];
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if (extraBytes == 0)
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{
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result << ILLEGAL_CHAR32;
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} else if (p+extraBytes > end)
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{
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result << ILLEGAL_CHAR32;
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break;
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} else {
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char32_t cResult = c -= utf8Offset[extraBytes];
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while (extraBytes != 0)
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{
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c = *p++;
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--extraBytes;
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if (c < 0x80 || c >= 0xC0)
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{
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result << ILLEGAL_CHAR32;
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p += extraBytes;
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break;
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}
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cResult = (cResult << 6) + (c & 0x3F);
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}
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result << cResult;
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}
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}
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}
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return result.str();
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}
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std::string pipedal::GetHostName()
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{
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char buffer[1024];
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if (gethostname(buffer,1024) != 0)
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{
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buffer[0] = '\0';
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}
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buffer[1023] = '\0';
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return buffer;
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}
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std::vector<std::string> pipedal::split(const std::string &value, char delimiter)
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{
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size_t start = 0;
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std::vector<std::string> result;
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while (start < value.length())
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{
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size_t pos = value.find_first_of(delimiter, start);
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if (pos == std::string::npos)
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{
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result.push_back(value.substr(start));
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break;
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}
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result.push_back(value.substr(start, pos - start));
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start = pos + 1;
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if (start == value.length())
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{
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// ends with delimieter? Then there's an empty-length value at the end.
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result.push_back("");
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}
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}
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return result;
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}
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bool pipedal::IsChildDirectory(const std::filesystem::path &path, const std::filesystem::path&rootPath)
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{
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auto iter = path.begin();
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for (auto i = rootPath.begin(); i != rootPath.end(); ++i)
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{
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if (iter == path.end() || *iter != *i)
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{
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return false;
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}
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++iter;
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}
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return true;
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}
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std::string pipedal::ToLower(const std::string&value)
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{
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std::string result;
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result.resize(value.length());
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for (size_t i = 0; i < value.length(); ++i)
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{
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result[i] = (char)tolower(value[i]);
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}
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return result;
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}
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std::filesystem::path pipedal::MakeRelativePath(const std::filesystem::path &path, const std::filesystem::path&parentPath)
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{
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if (path.is_relative()) return path;
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auto iter = path.begin();
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for (auto i = parentPath.begin(); i != parentPath.end(); ++i)
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{
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if (iter == path.end() || *iter != *i) {
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// not a child directory of parent directory.
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throw std::runtime_error("Not a child directory.");
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}
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++iter;
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}
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std::filesystem::path remander;
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while (iter != path.end())
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{
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remander /= *iter++;
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}
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return remander;
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}
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bool pipedal::HasDotDot(const std::filesystem::path &path)
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{
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for (auto &part : path)
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{
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if (part == "..")
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{
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return true;
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}
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if (part == ".")
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{
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return true;
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}
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}
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return false;
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}
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bool pipedal::IsSubdirectory(const std::filesystem::path &path, const std::filesystem::path &basePath)
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{
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auto iPath = path.begin();
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for (auto i = basePath.begin(); i != basePath.end(); ++i)
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{
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if (iPath == path.end())
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{
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return false;
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}
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if ((*i) != (*iPath))
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{
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if (*i == "" && ++i == basePath.end()) // match xyz/ (trailing /)
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{
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break;
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}
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return false;
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}
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++iPath;
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}
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while (iPath != path.end())
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{
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if (iPath->string() == "..")
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{
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return false;
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}
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++iPath;
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}
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return true;
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}
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bool pipedal::HasWritePermissions(const std::filesystem::path &path)
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{
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// posix, but may not work on windows.
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// allegedly windows provies an _access function, which is probably a superset of
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// access.
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return access(path.c_str(), W_OK) == 0;
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}
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