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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "version.h"
#include <vespa/vespalib/util/exceptions.h>
#include <vespa/vespalib/stllike/asciistream.h>
#include <climits>
namespace vespalib {
Version::Version(int major, int minor, int micro, const string & qualifier)
: _major(major),
_minor(minor),
_micro(micro),
_qualifier(qualifier),
_stringValue()
{
initialize();
}
Version::Version(const Version &) = default;
Version & Version::operator = (const Version &) = default;
Version::~Version() = default;
void
Version::initialize()
{
asciistream buf;
if (_qualifier != "") {
buf << _major << "." << _minor << "." << _micro << "." << _qualifier;
} else if (_micro > 0) {
buf << _major << "." << _minor << "." << _micro;
} else if (_minor > 0) {
buf << _major << "." << _minor;
} else if (_major > 0) {
buf << _major;
}
_stringValue = buf.str();
if ((_major < 0) || (_minor < 0) || (_micro < 0) || !_qualifier.empty()) {
verifySanity();
}
}
void
Version::verifySanity()
{
if (_major < 0)
throw IllegalArgumentException("Negative major in " + _stringValue);
if (_minor < 0)
throw IllegalArgumentException("Negative minor in " + _stringValue);
if (_micro < 0)
throw IllegalArgumentException("Negative micro in " + _stringValue);
if (_qualifier != "") {
for (size_t i = 0; i < _qualifier.length(); i++) {
unsigned char c = _qualifier[i];
if (! isalnum(c)) {
throw IllegalArgumentException("Error in " + _stringValue + ": Invalid character in qualifier");
}
}
}
}
// Precondition: input.empty() == false
static int parseInteger(stringref input) __attribute__((noinline));
static int parseInteger(stringref input)
{
const char *s = input.data();
unsigned char firstDigit = s[0];
if (!isdigit(firstDigit))
throw IllegalArgumentException("integer must start with a digit");
char *ep;
long ret = strtol(s, &ep, 10);
if (ret > INT_MAX || ret < 0) {
throw IllegalArgumentException("integer out of range");
}
if (s + input.size() != ep ) {
throw IllegalArgumentException("extra characters after integer");
}
return ret;
}
Version::Version(const string & versionString)
: _major(0),
_minor(0),
_micro(0),
_qualifier(),
_stringValue(versionString)
{
if ( ! versionString.empty()) {
stringref r(versionString.c_str(), versionString.size());
stringref::size_type dot(r.find('.'));
stringref majorS(r.substr(0, dot));
if ( !majorS.empty()) {
_major = parseInteger(majorS);
if (dot == stringref::npos) return;
r = r.substr(dot + 1);
dot = r.find('.');
stringref minorS(r.substr(0, dot));
if ( !minorS.empty()) {
_minor = parseInteger(minorS);
if (dot == stringref::npos) return;
r = r.substr(dot + 1);
dot = r.find('.');
stringref microS(r.substr(0, dot));
if ( ! microS.empty()) {
_micro = parseInteger(microS);
if (dot == stringref::npos) return;
r = r.substr(dot + 1);
dot = r.find('.');
if (dot == stringref::npos) {
_qualifier = r;
} else {
throw IllegalArgumentException("too many dot-separated components in version string '" + versionString + "'");
}
}
}
}
}
verifySanity();
}
bool
Version::equals(const Version& other) const
{
if (_major != other._major) return false;
if (_minor != other._minor) return false;
if (_micro != other._micro) return false;
if (_qualifier != other._qualifier) return false;
return true;
}
int
Version::compareTo(const Version& other) const
{
int result = getMajor() - other.getMajor();
if (result != 0) return result;
result = getMinor() - other.getMinor();
if (result != 0) return result;
result = getMicro() - other.getMicro();
if (result != 0) return result;
return getQualifier().compare(other.getQualifier());
}
} // namespace vespalib
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