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98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/**
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* Copyright (c) 2022, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fs_util.hh"
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#include "config.h"
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#include "fmt/format.h"
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#include "opt_util.hh"
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namespace lnav {
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namespace filesystem {
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Result<std::pair<ghc::filesystem::path, int>, std::string>
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open_temp_file(const ghc::filesystem::path& pattern)
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{
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auto pattern_str = pattern.string();
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char pattern_copy[pattern_str.size() + 1];
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int fd;
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strcpy(pattern_copy, pattern_str.c_str());
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if ((fd = mkstemp(pattern_copy)) == -1) {
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return Err(fmt::format("unable to create temporary file: {} -- {}",
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pattern.string(),
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strerror(errno)));
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}
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return Ok(std::make_pair(ghc::filesystem::path(pattern_copy), fd));
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}
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Result<std::string, std::string>
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read_file(const ghc::filesystem::path& path)
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{
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try {
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ghc::filesystem::ifstream file_stream(path);
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if (!file_stream) {
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return Err(std::string(strerror(errno)));
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}
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std::string retval;
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retval.assign((std::istreambuf_iterator<char>(file_stream)),
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std::istreambuf_iterator<char>());
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return Ok(retval);
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} catch (const std::exception& e) {
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return Err(std::string(e.what()));
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}
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}
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std::string
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build_path(const std::vector<ghc::filesystem::path>& paths)
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{
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std::string retval;
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for (const auto& path : paths) {
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if (path.empty()) {
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continue;
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}
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if (!retval.empty()) {
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retval += ":";
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}
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retval += path.string();
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}
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auto env_path = getenv_opt("PATH");
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if (env_path) {
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retval += ":" + std::string(*env_path);
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}
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return retval;
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}
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} // namespace filesystem
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} // namespace lnav
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