dp_version.cxx

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#include <sal/config.h>
 
#include <o3tl/string_view.hxx>
#include <rtl/ustring.hxx>
 
#include <dp_version.hxx>
 
namespace {
 
std::u16string_view getElement(std::u16string_view version, std::size_t * index)
{
    while (*index < version.size() && version[*index] == '0') {
        ++*index;
    }
    return o3tl::getToken(version, u'.', *index);
}
 
}
 
namespace dp_misc {
 
::dp_misc::Order compareVersions(
    std::u16string_view version1, std::u16string_view version2)
{
    for (size_t i1 = 0, i2 = 0; i1 != std::u16string_view::npos || i2 != std::u16string_view::npos;) {
        std::u16string_view e1(i1 != std::u16string_view::npos ? getElement(version1, &i1) : std::u16string_view());
        std::u16string_view e2(i2 != std::u16string_view::npos ? getElement(version2, &i2) : std::u16string_view());
        if (e1.size() < e2.size()) {
            return ::dp_misc::LESS;
        } else if (e1.size() > e2.size()) {
            return ::dp_misc::GREATER;
        } else if (e1 < e2) {
            return ::dp_misc::LESS;
        } else if (e1 > e2) {
            return ::dp_misc::GREATER;
        }
    }
    return ::dp_misc::EQUAL;
}
 
 
}
 
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