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Semver: Semantic version parsing and arithmetics

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This commit is contained in:
Vojtech Kral 2018-04-05 14:22:11 +02:00
parent a866011574
commit 2b8da333ef
4 changed files with 817 additions and 0 deletions
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90
xs/src/slic3r/Utils/Semver.hpp Normal file
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#ifndef slic3r_Semver_hpp_
#define slic3r_Semver_hpp_
#include <string>
#include <cstring>
#include <boost/optional.hpp>
#include <boost/format.hpp>
#include "semver/semver.h"
namespace Slic3r {
class Semver
{
public:
struct Major { const int i; Major(int i) : i(i) {} };
struct Minor { const int i; Minor(int i) : i(i) {} };
struct Patch { const int i; Patch(int i) : i(i) {} };
static boost::optional<Semver> parse(const std::string &str)
{
semver_t ver;
if (::semver_parse(str.c_str(), &ver) == 0) {
return Semver(ver);
} else {
return boost::none;
}
}
Semver(Semver &&other) { *this = std::move(other); }
Semver(const Semver &other) { *this = other; }
Semver &operator=(Semver &&other)
{
ver = other.ver;
other.ver.major = other.ver.minor = other.ver.patch = 0;
other.ver.metadata = other.ver.prerelease = nullptr;
}
Semver &operator=(const Semver &other)
{
ver = other.ver;
if (other.ver.metadata != nullptr) { std::strcpy(ver.metadata, other.ver.metadata); }
if (other.ver.prerelease != nullptr) { std::strcpy(ver.prerelease, other.ver.prerelease); }
}
~Semver() { ::semver_free(&ver); }
// Comparison
bool operator<(const Semver &b) const { return ::semver_compare(ver, b.ver) == -1; }
bool operator<=(const Semver &b) const { return ::semver_compare(ver, b.ver) <= 0; }
bool operator==(const Semver &b) const { return ::semver_compare(ver, b.ver) == 0; }
bool operator!=(const Semver &b) const { return ::semver_compare(ver, b.ver) != 0; }
bool operator>=(const Semver &b) const { return ::semver_compare(ver, b.ver) >= 0; }
bool operator>(const Semver &b) const { return ::semver_compare(ver, b.ver) == 1; }
// We're using '&' instead of the '~' operator here as '~' is unary-only:
bool operator&(const Semver &b) const { return ::semver_satisfies_patch(ver, b.ver); }
bool operator^(const Semver &b) const { return ::semver_satisfies_caret(ver, b.ver); }
// Conversion
std::string to_string() const {
auto res = (boost::format("%1%.%2%.%3%") % ver.major % ver.minor % ver.patch).str();
if (ver.prerelease != nullptr) { res += '-'; res += ver.prerelease; }
if (ver.metadata != nullptr) { res += '+'; res += ver.metadata; }
return res;
}
// Arithmetics
Semver& operator+=(const Major &b) { ver.major += b.i; return *this; }
Semver& operator+=(const Minor &b) { ver.minor += b.i; return *this; }
Semver& operator+=(const Patch &b) { ver.patch += b.i; return *this; }
Semver& operator-=(const Major &b) { ver.major -= b.i; return *this; }
Semver& operator-=(const Minor &b) { ver.minor -= b.i; return *this; }
Semver& operator-=(const Patch &b) { ver.patch -= b.i; return *this; }
Semver operator+(const Major &b) const { Semver res(*this); return res += b; }
Semver operator+(const Minor &b) const { Semver res(*this); return res += b; }
Semver operator+(const Patch &b) const { Semver res(*this); return res += b; }
Semver operator-(const Major &b) const { Semver res(*this); return res -= b; }
Semver operator-(const Minor &b) const { Semver res(*this); return res -= b; }
Semver operator-(const Patch &b) const { Semver res(*this); return res -= b; }
private:
semver_t ver;
Semver(semver_t ver) : ver(ver) {}
};
}
#endif