%% See file 'doclicense.dtx' for copyright and license.
\NeedsTeXFormat{LaTeX2e}[1998/12/01]
\ProvidesPackage{doclicense}
    [2015/02/13 v0.10 Set and print the license of a document]

%% Dependencies {{{
\RequirePackage{kvoptions}
\RequirePackage{xifthen}
\RequirePackage{etoolbox} %% \ifcsdef
\RequirePackage{xspace}
\AtEndPreamble{%
  \@ifpackageloaded{csquotes}{}{\RequirePackage{csquotes}}
  \@ifpackageloaded{ccicons}{}{\RequirePackage{ccicons}}
    %% For \doclicenseIcon
  \@ifpackageloaded{graphicx}{}{\RequirePackage{graphicx}}
    %% For \doclicenseImage
  \@ifpackageloaded{hyperref}{}{\RequirePackage{hyperref}}
  \@ifpackageloaded{hyperxmp}{%
    \hypersetup{
      pdfcopyright  = {\doclicenseLongText},
      pdflicenseurl = {\doclicenseURL},
    }
  }{}
}
%% }}}

%% Parameters {{{
\DeclareStringOption[CC]{type}
\DeclareStringOption[by-sa]{modifier}
\DeclareStringOption{version}
\DeclareStringOption{lang}
\DeclareStringOption{imagemodifier}
\DeclareStringOption[10em]{imagewidth}
%% }}}

\ProcessLocalKeyvalOptions*
%% Declare variables {{{
\newcommand{\doclicense@baseUrlCC}{https://creativecommons.org}
\newcommand{\doclicense@versionFallback}{}
\newcommand{\doclicense@versionUsed}{}
\newboolean{doclicense@licenseKnown}
\newlength{\doclicense@hsize}
\newcommand{\doclicense@longName}{%
  \@nameuse{doclicense@lang@lic@\doclicense@type @\doclicense@modifier%
    @\doclicense@versionUsed}
}
\newcommand{\doclicense@icon}{%
  \PackageError{doclicense}{Icon not defined}
    {Please check the documentation of doclicense to see what you can do about it.}%
}
%% }}}

%% User macros {{{
\newcommand{\doclicenseType}{\doclicense@type\xspace}
\newcommand{\doclicenseLongType}{}
\newcommand{\doclicenseModifier}{\MakeUppercase{\doclicense@modifier}\xspace}
\newcommand{\doclicenseVersion}{\doclicense@versionUsed\xspace}
\newcommand{\doclicenseName}{%
  \doclicense@type~\doclicense@modifier~\doclicense@versionUsed\xspace}
\newcommand{\doclicenseNameRef}{\href{\doclicenseURL}{\doclicenseName}\xspace}
\newcommand{\doclicenseLongName}{\doclicenseLongType\space\doclicense@longName\xspace}
\newcommand{\doclicenseLongNameRef}{\href{\doclicenseURL}{\doclicenseLongName}}
\newcommand{\doclicenseText}{%
  \doclicense@lang@thisDoc\space
  \href{\doclicenseURL}{\enquote{\doclicenseName}} \doclicense@lang@word@license.\xspace
}
\newcommand{\doclicenseLongText}{%
  \doclicense@lang@thisDoc\space
  \href{\doclicenseURL}{\doclicenseLongType\space\enquote{\doclicense@longName}}
  \doclicense@lang@word@license.\xspace
}
\newcommand{\doclicenseIcon}{\doclicense@icon\xspace}
\newcommand{\doclicenseImage}[1][]{%
  \setkeys{doclicense}{#1}
  \href{\doclicenseURL}{%
    \includegraphics[width=\doclicense@imagewidth]%
      {doclicense-\doclicense@type-\doclicense@modifier\doclicense@imagemodifier}%
  }
}

\newcommand{\doclicenseLicense}{\doclicenseThis} %% legacy support
\newcommand{\doclicenseThis}{
  \setlength{\doclicense@hsize}{\textwidth-\doclicense@imagewidth-2em}
  \ifthenelse{\lengthtest{\hsize > \vsize}}{%% landscape
    \setlength{\doclicense@hsize}{\doclicense@hsize-10em}
  }{}
  \begin{center}
    \begin{minipage}{\doclicense@hsize}
      \doclicenseLongText%
    \end{minipage}
    \hfill
    \begin{minipage}{\doclicense@imagewidth}
      \doclicenseImage%
    \end{minipage}
  \end{center}
}
%% }}}

%% Language support {{{
\ifthenelse{\equal{\doclicense@lang}{}}{%
  \renewcommand{\doclicense@lang}{\languagename}}{}
\IfFileExists{doclicense-\doclicense@lang.ldf}{%
  \input{doclicense-\doclicense@lang.ldf}
}{%
  \PackageWarning{doclicense}{%
    No language definition for \doclicense@lang found.
    Please add one and submit a patch. Using English as fallback.}
  \renewcommand{\doclicense@lang}{english}
  \input{doclicense-\doclicense@lang.ldf}
}

%% }}}

%% Set license {{{
\newcommand{\doclicense@setVersion}[1][]{%
  \ifthenelse{\equal{#1}{}}{}{%
    \renewcommand{\doclicense@versionFallback}{#1}
  }
  \ifthenelse{\equal{\doclicense@version}{}}{%
    \renewcommand{\doclicense@versionUsed}{\doclicense@versionFallback}
  }{%
    \renewcommand{\doclicense@versionUsed}{\doclicense@version}
  }
}
\newcommand{\doclicense@set}{%
  %% CC {{{
  \ifthenelse{\equal{\doclicense@type}{CC}}{%
    \renewcommand{\doclicenseLongType}{Creative Commons\xspace}

    \ifthenelse{\equal{\doclicense@lang@lic@CC@code}{}}{%
      \edef\doclicense@UrlLangPart{}
    }{%
      \edef\doclicense@UrlLangPart{/\doclicense@lang@lic@CC@code}
    }
    \doclicense@setVersion[3.0]
    \edef\doclicenseURL{%
      \doclicense@baseUrlCC/%
      licenses/%
      \doclicense@modifier/%
      \doclicense@versionUsed\doclicense@UrlLangPart}
    \ifthenelse{\equal{\doclicense@modifier}{by-sa}}{%
      \renewcommand{\doclicense@icon}{\ccbysa}
      \renewcommand{\doclicense@imagemodifier}{}
    }{}
    \ifthenelse{\equal{\doclicense@modifier}{by-nd}}{%
      \renewcommand{\doclicense@icon}{\ccbynd}
      \renewcommand{\doclicense@imagemodifier}{}
    }{}
    \ifthenelse{\equal{\doclicense@modifier}{by-nc}}{%
      \renewcommand{\doclicense@icon}{\ccbync}
      \renewcommand{\doclicense@imagemodifier}{}
    }{}
    \ifthenelse{\equal{\doclicense@modifier}{by-nc-sa}}
      {\renewcommand{\doclicense@icon}{\ccbync}}{}
    \ifthenelse{\equal{\doclicense@modifier}{by-nc-nd}}
      {\renewcommand{\doclicense@icon}{\ccbync}}{}
    \ifthenelse{\equal{\doclicense@modifier}{zero}}{%
      \renewcommand{\doclicense@icon}{\cczero}
      \renewcommand{\doclicense@imagemodifier}{}
      \doclicense@setVersion[1.0]
      \edef\doclicenseURL{%
        \doclicense@baseUrlCC/%
        publicdomain/%
        \doclicense@modifier/%
        \doclicense@versionUsed\doclicense@UrlLangPart}
    }{}
    \ifthenelse{\equal{\doclicense@modifier}{pd}}{
      \renewcommand{\doclicense@icon}{\ccpd}
      \renewcommand{\doclicense@imagemodifier}{}
      \doclicense@setVersion[1.0]
      \edef\doclicenseURL{%
        \doclicense@baseUrlCC/%
        licenses/publicdomain/%
        \doclicense@versionUsed\doclicense@UrlLangPart}
    }{}

    \ifcsdef{doclicense@lang@lic@\doclicense@type%
      @\doclicense@modifier @\doclicense@versionUsed}{}{%

      \PackageError{doclicense}{License long name not defined}%
        {Please check the documentation of doclicense to see what you can do about it.}%
    }

    \setboolean{doclicense@licenseKnown}{true}
  }{}%% }}}
  \ifthenelse{\not\boolean{doclicense@licenseKnown}}{%
    \PackageError{doclicense}{License unknown}%
      {Please check the documentation of doclicense to see what you can do about it.}%
  }{}%
}
%% }}}

\doclicense@set%
\endinput
%%
%% End of file `doclicense.sty'.