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https://github.com/NGSolve/netgen.git
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e9eae568ff
Having version.hpp throw an exception when built against a malformed version number (due to, eg, not having the git tag available in an automated package build from source bundle) results in _init_ failing during an otherwise apparently successful dlopen(), as well as the netgen-mesher executable crashing before hitting main(). This patch both forces an abort and prints a helpful message alerting the builder/user that something went wrong instead of handing over either a coredump or a weirdly malfunctioning library with no apparent cause. Hopefully this will avoid a repeat of automated Fedora builds shipping nonfunctional Netgen RPMs for several years!
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
#ifndef NETGEN_CORE_VERSION_HPP
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#define NETGEN_CORE_VERSION_HPP
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#include <iostream>
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#include <string>
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#include <tuple>
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#include "exception.hpp"
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#include "ngcore_api.hpp"
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namespace ngcore
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{
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class VersionInfo
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{
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private:
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size_t mayor_{}, minor_{}, release{}, patch{};
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std::string git_hash{};
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public:
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VersionInfo() = default;
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VersionInfo(std::string vstring)
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{
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std::string save = vstring;
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try {
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minor_ = release = patch = 0;
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git_hash = "";
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if(vstring.substr(0,1) == "v")
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vstring = vstring.substr(1,vstring.size()-1);
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auto dot = vstring.find('.');
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mayor_ = std::stoi(vstring.substr(0,dot));
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if(dot == size_t(-1)) vstring = "";
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else vstring = vstring.substr(dot+1, vstring.size()-dot-1);
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if(!vstring.empty())
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{
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dot = vstring.find('.');
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minor_ = std::stoi(vstring.substr(0,dot));
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if (dot == size_t(-1)) vstring = "";
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else vstring = vstring.substr(dot+1, vstring.size()-dot-1);
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if(!vstring.empty())
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{
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dot = vstring.find('-');
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release = std::stoi(vstring.substr(0,dot));
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if(dot == size_t(-1)) vstring = "";
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else vstring = vstring.substr(dot+1,vstring.size()-dot-1);
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if(!vstring.empty())
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{
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dot = vstring.find('-');
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patch = std::stoi(vstring.substr(0,dot));
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if(dot == size_t(-1)) vstring = "";
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else vstring = vstring.substr(dot+1, vstring.size()-dot-1);
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if(!vstring.empty())
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git_hash = vstring;
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}
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}
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}
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} catch(...) {
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std::cerr << "Malformed NETGEN_VERSION (" << save <<"\n";
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std::cerr << "Micompiled/mispackaged Netgen library\n";
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abort();
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}
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}
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VersionInfo(const char* cstr) : VersionInfo(std::string(cstr)) { }
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std::string to_string() const
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{ std::string vstring = "v" + std::to_string(mayor_);
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if(minor_ || release || patch || !git_hash.empty())
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{
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vstring += "." + std::to_string(minor_);
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if(release || patch || !git_hash.empty())
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{
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vstring += "." + std::to_string(release);
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if(patch || !git_hash.empty())
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{
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vstring += "-" + std::to_string(patch);
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if(!git_hash.empty())
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vstring += "-" + git_hash;
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}
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}
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}
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return vstring;
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}
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bool operator <(const VersionInfo& other) const
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{
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return std::tie(mayor_, minor_, release, patch) <
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std::tie(other.mayor_, other.minor_, other.release, other.patch);
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}
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bool operator ==(const VersionInfo& other) const
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{
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return mayor_ == other.mayor_ && minor_ == other.minor_ && release == other.release
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&& patch == other.patch;
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}
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bool operator !=(const VersionInfo& other) const
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{
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return !(*this==other);
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}
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bool operator >(const VersionInfo& other) const { return other < (*this); }
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bool operator <=(const VersionInfo& other) const { return !((*this) > other); }
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bool operator >=(const VersionInfo& other) const { return !((*this) < other); }
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};
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inline std::ostream& operator << (std::ostream& ost, const VersionInfo& version)
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{
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return ost << version.to_string();
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}
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NGCORE_API const VersionInfo& GetLibraryVersion(const std::string& library);
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NGCORE_API const std::map<std::string, VersionInfo>& GetLibraryVersions();
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NGCORE_API void SetLibraryVersion(const std::string& library, const VersionInfo& version);
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} // namespace ngcore
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#endif // NETGEN_CORE_VERSION_HPP
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