90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
#include "parser.h"
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#include <sstream>
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using std::string;
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using std::pair;
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using std::tuple;
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using std::tie;
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using boost::optional;
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using boost::none;
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using std::istringstream;
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using std::getline;
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namespace gitversion {
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VersionInfo Parser::parse(const string &versionString) {
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VersionInfo result;
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string versionNumber;
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optional<string> versionInfo;
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tie(versionNumber, versionInfo) = _splitAt(versionString, '+');
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tie(result.majorVersion, result.minorVersion, result.hotfixVersion, result.versionTag) = _extractMajorMinorHotfixTag(versionNumber);
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result.isDevVersion = (versionInfo != none);
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result.isStableVersion = !result.isDevVersion && (result.versionTag == "" || result.versionTag == "stable");
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if (versionInfo != none && *versionInfo != "unknown") {
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tie(result.gitCommitId, result.commitsSinceTag) = _extractGitCommitIdAndCommitsSinceTag(*versionInfo);
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} else {
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result.gitCommitId = "";
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result.commitsSinceTag = 0;
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}
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return result;
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}
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pair<string, optional<string>> Parser::_splitAt(const string &versionString, char delimiter) {
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istringstream stream(versionString);
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string versionNumber;
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getline(stream, versionNumber, delimiter);
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if (!stream.good()) {
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return std::make_pair(versionNumber, none);
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} else {
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string versionInfo;
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getline(stream, versionInfo);
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return std::make_pair(versionNumber, versionInfo);
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}
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}
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tuple<string, string, string, string> Parser::_extractMajorMinorHotfixTag(const string &versionNumber) {
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string majorMinorHotfix;
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optional<string> versionTag;
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tie(majorMinorHotfix, versionTag) = _splitAt(versionNumber, '-');
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string major, minor, hotfix;
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tie(major, minor, hotfix) = _extractMajorMinorHotfix(majorMinorHotfix);
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if (versionTag == none) {
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versionTag = "";
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}
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return std::make_tuple(major, minor, hotfix, *versionTag);
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}
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tuple<string, string, string> Parser::_extractMajorMinorHotfix(const string &versionNumber) {
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istringstream stream(versionNumber);
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string major, minor, hotfix;
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getline(stream, major, '.');
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if (!stream.good()) {
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minor = "0";
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} else {
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getline(stream, minor, '.');
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}
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if (!stream.good()) {
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hotfix = "0";
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} else {
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getline(stream, hotfix);
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}
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return std::make_tuple(major, minor, hotfix);
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};
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std::tuple<string, unsigned long> Parser::_extractGitCommitIdAndCommitsSinceTag(const string &versionInfo) {
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istringstream stream(versionInfo);
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string commitsSinceTag;
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getline(stream, commitsSinceTag, '.');
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if (!stream.good()) {
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throw std::logic_error("Invalid version information: Missing delimiter after commitsSinceTag (versionInfo: "+versionInfo+").");
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}
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string gitCommitId;
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getline(stream, gitCommitId, '.');
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if (gitCommitId[0] != 'g') {
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throw std::logic_error("Invalid version information: Git commit id component doesn't start with 'g' (versionInfo: "+versionInfo+").");
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}
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return std::make_tuple(gitCommitId.substr(1), std::stoul(commitsSinceTag));
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}
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}
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