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patch manager: properly check patch versions

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Also abort patch import of lower patch versions
This commit is contained in:
Megamouse 2020-06-19 15:38:51 +02:00
parent d3c6472c0f
commit bf978ac8ca
5 changed files with 80 additions and 23 deletions
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49
Utilities/version.cpp
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@ -1,6 +1,8 @@
#include "stdafx.h"
#include "version.h"
#include <regex>
namespace utils
{
std::string to_string(version_type type)
@ -48,4 +50,51 @@ namespace utils
return version;
}
// Based on https://www.geeksforgeeks.org/compare-two-version-numbers/
int compare_versions(const std::string& v1, const std::string& v2, bool& ok)
{
// Check if both version strings are valid
ok = std::regex_match(v1, std::regex("[0-9.]*")) && std::regex_match(v2, std::regex("[0-9.]*"));
if (!ok)
{
return -1;
}
// vnum stores each numeric part of version
int vnum1 = 0;
int vnum2 = 0;
// Loop until both strings are processed
for (int i = 0, j = 0; (i < v1.length() || j < v2.length());)
{
// Storing numeric part of version 1 in vnum1
while (i < v1.length() && v1[i] != '.')
{
vnum1 = vnum1 * 10 + (v1[i] - '0');
i++;
}
// Storing numeric part of version 2 in vnum2
while (j < v2.length() && v2[j] != '.')
{
vnum2 = vnum2 * 10 + (v2[j] - '0');
j++;
}
if (vnum1 > vnum2)
return 1;
if (vnum2 > vnum1)
return -1;
// If equal, reset variables and go for next numeric part
vnum1 = vnum2 = 0;
i++;
j++;
}
return 0;
}
}