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103 lines
2 KiB
C++
103 lines
2 KiB
C++
#include "stdafx.h"
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#include "version.h"
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#include <regex>
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namespace utils
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{
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std::string to_string(version_type type)
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{
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switch (type)
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{
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case version_type::pre_alpha: return "Pre-Alpha";
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case version_type::alpha: return "Alpha";
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case version_type::beta: return "Beta";
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case version_type::release_candidate: return "RC";
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case version_type::release: return "Release";
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}
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return "Unknown";
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}
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uint version::to_hex() const
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{
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return (m_hi << 24) | (m_mid << 16) | (m_lo << 8) | ((uint(m_type) & 0xf) << 4) | (m_type_index & 0xf);
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}
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std::string version::to_string() const
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{
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std::string version = std::to_string(hi()) + "." + std::to_string(mid());
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if (lo())
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{
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version += '.';
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version += std::to_string(lo());
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}
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if (type() != version_type::release)
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{
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if (!postfix().empty())
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{
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version += "-" + postfix();
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}
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version += ' ';
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version += utils::to_string(type());
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if (type_index() > 1)
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{
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version += " " + std::to_string(type_index());
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}
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}
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return version;
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}
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// Based on https://www.geeksforgeeks.org/compare-two-version-numbers/
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int compare_versions(const std::string& v1, const std::string& v2, bool& ok)
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{
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// Check if both version strings are valid
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ok = std::regex_match(v1, std::regex("[0-9.]*")) && std::regex_match(v2, std::regex("[0-9.]*"));
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if (!ok)
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{
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return -1;
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}
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// vnum stores each numeric part of version
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int vnum1 = 0;
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int vnum2 = 0;
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// Loop until both strings are processed
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for (usz i = 0, j = 0; (i < v1.length() || j < v2.length());)
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{
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// Storing numeric part of version 1 in vnum1
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while (i < v1.length() && v1[i] != '.')
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{
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vnum1 = vnum1 * 10 + (v1[i] - '0');
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i++;
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}
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// Storing numeric part of version 2 in vnum2
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while (j < v2.length() && v2[j] != '.')
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{
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vnum2 = vnum2 * 10 + (v2[j] - '0');
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j++;
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}
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if (vnum1 > vnum2)
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return 1;
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if (vnum2 > vnum1)
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return -1;
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// If equal, reset variables and go for next numeric part
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vnum1 = vnum2 = 0;
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i++;
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j++;
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}
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return 0;
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}
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}
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