From 08c3f380313a1262729bd0dbbbf5a85b6f695e81 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Thu, 16 Feb 2017 22:30:01 +0000 Subject: util: add a vercmp function to compare version numbers It is simple, supports simple x.y.z type numeric versions, and does not attempt any kind of validation --- src/common/util.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/common/util.cpp') diff --git a/src/common/util.cpp b/src/common/util.cpp index bfcf86bc6..2741497d6 100644 --- a/src/common/util.cpp +++ b/src/common/util.cpp @@ -568,4 +568,21 @@ std::string get_nix_version_display_string() MDEBUG("Address '" << address << "' is not local"); return false; } + int vercmp(const char *v0, const char *v1) + { + std::vector f0, f1; + boost::split(f0, v0, boost::is_any_of(".")); + boost::split(f1, v1, boost::is_any_of(".")); + while (f0.size() < f1.size()) + f0.push_back("0"); + while (f1.size() < f0.size()) + f1.push_back("0"); + for (size_t i = 0; i < f0.size(); ++i) { + int f0i = atoi(f0[i].c_str()), f1i = atoi(f1[i].c_str()); + int n = f0i - f1i; + if (n) + return n; + } + return 0; + } } -- cgit v1.2.3