\def\fileversion{2.3}
\def\filedate{2018/12/14}
\def\docdate {2018/12/14}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{egweblnk}[\filedate \space v\fileversion \space DF's support for http web links in class egpubl]

% commands 
%   \httpsAddr            {URL *without* leading string 'https:'} 
%   \httpAddr             {URL *without* leading string 'http:'}
%   \ftpAddr              {URL *without* leading string 'ftp:'}
%   \httpLinkPlusFootnote {URL *without* leading 'http:'}{source text}
%   \URL		  {url}
%   \MailTo		  {Email addr}
%   \MailToNA		  {emailName}{@emailSiteAddress}
%   \GotoFile		  {destination file}{source text}
%   
%   \webLinkFont
% -----------------------------------------------------------------------

% revisions:
% in version 2.3:
% added \httpsAddr
% revisions:
% in version 2.2:
%   use \DeclareUrlCommand instead of replicating code
% in version 2.1:
%   define url@dfstyle according to version of package url
% in version 2.0:
%   take a new approach for almost all commands based on the url package
%   add new command \MailToNA
%   replace \WebLinkPlusFootnote by \httpLinkPlusFootnote
% in version 1.3:
%   adapt to hyperref 1999/10/14 v6.66m

\def\LinkColor{blue}%        % color BLUE for external links

% define condensed teletype font 
%
\def\ttcond{%
% \usefont{T1}{pcr}{mc}{n}%
  \ttfamily\fontseries{mc}\fontshape{n}\selectfont%
}

% ---------------- url package ---

%*% \RequirePackage[T1]{url}
% \let\urlorg\url

% check for URL version 1.5
% \@ifundefined{Url@ttdo}{%
%   \PackageError{dfweblnk}%
%   {incompatible version of package 'url' installed!}%
%   {command \backslash URL@ttdo undefined in used package 'url'}%
% }{}%

% ----------------
% define a new url-style called 'df'

\def\url@dfstyle{%
  \def\UrlFont{\ttcond}%
  \@ifundefined{Url@ttdo}{}{\Url@ttdo}% if this cmd is not defined in package url then we are using
  % a package newer than version 1.6 - where this command is not necessary anymore
}

% ----------------
% add a new customized command \webLink replacing the \url command
%
% \newcommand\webLink{\begingroup \urlstyle{df}\Url}
%
\DeclareUrlCommand\webLink{\urlstyle{df}}

% ---------------- hyperref package ---

%*% \RequirePackage[pdfmark]{hyperref}
%*% \hypersetup{%
%*%   colorlinks,linkcolor=\LinkColor,citecolor=\LinkColor,urlcolor=\LinkColor,
%*% }

% select font to typeset web-link
\let\webLinkFont=\ttcond


% ----------------

% \httpAddr #1 
%    with #1 a URL *without* leading string 'http:'
%    creates a hypertext link from string 'http:' to URL 'http:#1'
%    all typeset with \webLinkFont
%
\def\httpAddr#1{\href{http:#1}{\webLinkFont http:}\webLink{#1}}

% ----------------

% \httpsAddr #1 
%    with #1 a URL *without* leading string 'https:'
%    creates a hypertext link from string 'https:' to URL 'https:#1'
%    all typeset with \webLinkFont
%
\def\httpsAddr#1{\href{https:#1}{\webLinkFont https:}\webLink{#1}}

% ----------------

% \ftpAddr #1 
%    with #1 a URL *without* leading string 'ftp:'
%    creates a hypertext link from string 'ftp:' to URL 'ftp:#1'
%    all typeset with \webLinkFont
%
\def\ftpAddr#1{\href{ftp:#1}{\webLinkFont ftp:}\webLink{#1}}


% \httpLinkPlusFootnote is basically the same as \htmladdnormallinkfoot
%   with the difference that the footnote is typeset with \webLink
%   (in order to have correct handling of special symbols like _ or ~)
% The command creates a link to URL http:#1 from 
%   active string #2='source text' and
%   typesets a footnote printing the URL.
%
\newcommand{\httpLinkPlusFootnote}[2]{% par #1: destination URL
  %                                   % par #2: source text
  \href{http:#1}{#2}\footnote{\httpAddr{#1}}%
}%


% \URL
%   typeset URL with font \webLinkFont
%   and create URL to #1='URL'
%
\newcommand{\URL}[1]{\href{#1}{\webLink{#1}}}


% \MailTo
%   typeset email address with font \webLinkFont
%   and create mailto-URL for #1='Email addr'
%   eg  \MailTo{d.fellner@tu-bs.de}
%
\newcommand{\MailTo}[1]{\href{mailto:#1}{\webLinkFont #1}} 


% \MailToNA
%   like \MailTo but with 2 parameters separately defining 
%   Name and site Address
%   eg  \MailToNA{d.fellner}{@tu-bs.de}
%
\newcommand{\MailToNA}[2]{\href{mailto:#1#2}{\webLinkFont #1}\webLink{#2}}


% \GotoFile
%   create link to 'destination file' from active string 'source text' 
%   (for pdf files this will result in a GotoR command)
%
\newcommand{\GotoFile}[2]{%         % par #1: destination file
%                                   % par #2: source text
%
  \href{file:#1}{#2}%
}%


\endinput
