diff options
Diffstat (limited to 'Master/texmf-dist')
| -rw-r--r-- | Master/texmf-dist/doc/latex/download/README | 36 | ||||
| -rw-r--r-- | Master/texmf-dist/doc/latex/download/download.pdf | bin | 172298 -> 144709 bytes | |||
| -rw-r--r-- | Master/texmf-dist/source/latex/download/download.tex (renamed from Master/texmf-dist/doc/latex/download/download.tex) | 262 | ||||
| -rw-r--r-- | Master/texmf-dist/tex/latex/download/download.sty | 116 |
4 files changed, 274 insertions, 140 deletions
diff --git a/Master/texmf-dist/doc/latex/download/README b/Master/texmf-dist/doc/latex/download/README new file mode 100644 index 00000000000..af17fbfc62b --- /dev/null +++ b/Master/texmf-dist/doc/latex/download/README @@ -0,0 +1,36 @@ +%% download - download files with LaTeX +%% +%% Copyright (C) 2012-2013 by Simon Sigurdhsson <sigurdhsson@gmail.com> +%% +%% This work may be distributed and/or modified under the +%% conditions of the LaTeX Project Public License, either version 1.3 +%% of this license or (at your option) any later version. +%% The latest version of this license is in +%% http://www.latex-project.org/lppl.txt +%% and version 1.3 or later is part of all distributions of LaTeX +%% version 2005/12/01 or later. +%% +%% This work has the LPPL maintenance status `maintained'. +%% +%% The Current Maintainer of this work is Simon Sigurdhsson. +%% +%% This work consists of the file download.tex +%% and the derived file download.sty. + +This is version 1.0 of the download package, a package which allows +LaTeX to download files using wget or cURL. + +The following files are enclosed. + + README - This file + Makefile - GNU Makefile for making the package and documentation + download.tex - LaTeX source code of the package and documentation + download.pdf - PDF version of the documentation + +Installation notes: +The easiest way to install this package, assuming you have obtained the +source code from Github or CTAN, is to simply run `make install`. This +will generate package code and documentation, install it into TEXMFHOME +and run `mktexlsr`. If you wish to compile the package but not install +it, run `make all` instead. If you insist on doing it manually, remember +that you must use `pdflatex` (not `tex` or `latex`). diff --git a/Master/texmf-dist/doc/latex/download/download.pdf b/Master/texmf-dist/doc/latex/download/download.pdf Binary files differindex b638eae06bc..f31c6c41919 100644 --- a/Master/texmf-dist/doc/latex/download/download.pdf +++ b/Master/texmf-dist/doc/latex/download/download.pdf diff --git a/Master/texmf-dist/doc/latex/download/download.tex b/Master/texmf-dist/source/latex/download/download.tex index d6ed416718f..07559c8467f 100644 --- a/Master/texmf-dist/doc/latex/download/download.tex +++ b/Master/texmf-dist/source/latex/download/download.tex @@ -1,6 +1,6 @@ %% download - download files with LaTeX %% -%% Copyright (C) 2012 by Simon Sigurdhsson <sigurdhsson@gmail.com> +%% Copyright (C) 2012-2013 by Simon Sigurdhsson <sigurdhsson@gmail.com> %% %% This work may be distributed and/or modified under the %% conditions of the LaTeX Project Public License, either version 1.3 @@ -41,11 +41,12 @@ \begin{document} % Change & version info - \version{1.0} + \version{1.1} \changes{1.0}{Initial version} + \changes{1.1}{Added aria2 and axel engines} % Metadata - \package[ctan=skbundle,vcs=https://github.com/urdh/download]{download} + \package[ctan=download,vcs=https://github.com/urdh/download]{download} \author{Simon Sigurdhsson} \email{sigurdhsson@gmail.com} @@ -53,12 +54,13 @@ \maketitle \begin{abstract} The \thepackage\ package allows \LaTeX\ to download files using - cURL or wget. + cURL, wget, aria2 or axel. \end{abstract} \section{Introduction} This package, inspired by a question on \TeX.SE\footcite{Klinger12}, - allows \LaTeX\ to download files using cURL or wget. Since it needs + allows \LaTeX\ to download files using one of four engines. + Since it needs to run external commands, it requires unrestricted \cs{write18} access \Notice{do not indiscriminately run \hologo{pdfLaTeX} with the \texttt{--shell-escape} flag; using this package it would be @@ -67,29 +69,33 @@ \section{Usage} The package is very simple to use, but requires a *nix platform with - either cURL or wget installed and present in the \texttt{PATH}. + any of the engines installed and present in the \texttt{PATH}. \subsection{Options} - \Option{engine}\WithValues{auto,curl,wget}\AndDefault{auto} + \Option{engine}\WithValues{auto,curl,wget,aria2,axel}\AndDefault{auto} The package only has one option, which controls what underlying software is used to download the file. As of version \theversion, - the two engines available are cURL and wget. The default, which is + the four engines available are cURL, wget, aria2 and axel. + The default, which is used when no option is supplied, is \texttt{auto}. In this mode, - \thepkg\ will look for wget and cURL, in that order, and use the - first one available. + \thepkg\ will look for wget, cURL, aria2 and axel, in that order, + and use the first one available. \subsection{Macros} \DescribeMacro\download[<filename>]{<url>} The only macro provided by \thepkg\ is \cs{download}. With it, you can download any file from any \meta{url} supported by the underlying engine (wget supports \texttt{http(s)} and \texttt{ftp}, cURL - supports a few more; for most cases wget should be enough). The + supports a few more, aria2 supports torrent downloads and axel + supports downloading from multiple mirrors at once\footnote{See the + manpage of the respective command for more information.}; for most + cases wget should be enough). The optional argument \meta{filename} makes the underlying engine save the file with the specified filename \Notice{this also enables file - existence checking; without it, wget and cURL will attempt to - download the file even if it exists --- wget see the existing file - and do nothing, but cURL will download a new copy with a numeral - suffix}. + existence checking; without it, the engine will attempt to + download the file even if it exists --- wget and aria2 see the + existing file and do nothing, and axel probably replaces any existing + file but cURL will download a new copy with a numeral suffix}. \Implementation \SelfPreambleTo{\mypreamble} @@ -109,7 +115,7 @@ Then, we declare ourselves to provide the \thepkg\ \LaTeX3 package. \begin{MacroCode}{package} \ProvidesExplPackage{download} - {2012/12/31}{1.0}{download files with LaTeX} + {2013/04/08}{1.1}{download files with LaTeX} \end{MacroCode} \subsection{Messages} @@ -121,8 +127,8 @@ \begin{MacroCode}{package} \msg_new:nnnn{download}{no-write18}{Could~not~use~\string\write18!} {Please~run~`latex`~with~the~`--shell-escape`~flag.} -\msg_new:nnnn{download}{no-engine}{Could~not~find~cURL~or~wget!} - {Please~make~sure~either~cURL~or~wget~is~installed~and~in~your~PATH.} +\msg_new:nnnn{download}{no-engine}{Could~not~find~any~engine!} + {Please~make~sure~one~of~the~engines~is~installed~and~in~your~PATH.} \end{MacroCode} We also have a message being displayed when \cs{download} is being @@ -138,6 +144,8 @@ \begin{MacroCode}{package} \msg_new:nnn{download}{use-curl}{Using~cURL.} \msg_new:nnn{download}{use-wget}{Using~wget.} +\msg_new:nnn{download}{use-ariaII}{Using~aria2.} +\msg_new:nnn{download}{use-axel}{Using~axel.} \end{MacroCode} \subsection{The \cs{write18} test} @@ -186,73 +194,36 @@ \end{MacroCode} \end{macro} - \subsection{Testing for cURL and wget} - Testing for the existence of wget and cURL is done by calling + \subsection{Testing for the applications} + Testing for the existence of executables is done by calling the standard *nix \texttt{which} command. We define one conditional - for every engine (starting with cURL): - \begin{macro}{\__download_if_curl_test:TF} - \begin{macro}{\__download_if_curl_test:T} - \begin{macro}{\__download_if_curl_test:F} - \begin{macro}{\__download_if_curl_test_p:} + for all engines: + \begin{macro*}{\__download_if_executable_test:nF} + \begin{macro*}{\__download_if_executable_test:nT} + \begin{macro}{\__download_if_executable_test:nTF}[1] + {The executable to test the existence of} + \changes{1.1}{Condensed test macros into one macro with an argument} \begin{MacroCode}{package} -\prg_new_conditional:Nnn\__download_if_curl_test:{TF,T,F,p}{ +\prg_new_conditional:Npnn\__download_if_executable_test:n#1{TF,T,F,p}{ \end{MacroCode} First, run \texttt{which} to create the temporary file. \begin{MacroCode}{package} - \immediate\write18{which~curl~&&~touch~\jobname.aex} + \immediate\write18{which~#1~&&~touch~\jobname.aex} \end{MacroCode} - A temporary boolean is defined to hold the result of the test (this - is a bit of carco cult programming, any clues as to why placing the - result inside \cs{file_if_exists:nTF} doesn't work are welcome), and - if the test is successful we remove the temporary file. + If the temporary file exists, we delete it and return true. + Otherwise, we return false. \begin{MacroCode}{package} - \bool_set:Nn\l_tmpa_bool{\c_false_bool} \file_if_exist:nTF{\jobname.aex}{ \__download_rm:n{\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_true_bool} - }{} -\end{MacroCode} - Finally, the temporary boolean is used to return a result. -\begin{MacroCode}{package} - \if_bool:N\l_tmpa_bool - \prg_return_true: - \else: - \prg_return_false: - \fi: -} -\end{MacroCode} - \end{macro} - \end{macro} - \end{macro} - \end{macro} - - The conditional for wget is defined analogously to that of cURL - (again, a bit of cargo cult programming; ideally we'd be DRY and have - one does-this-executable-exist-conditional, but for some reason that - wouldn't work out for me --- hints appreciated). - \begin{macro}{\__download_if_wget_test:TF} - \begin{macro}{\__download_if_wget_test:T} - \begin{macro}{\__download_if_wget_test:F} - \begin{macro}{\__download_if_wget_test_p:} -\begin{MacroCode}{package} -\prg_new_conditional:Nnn\__download_if_wget_test:{TF,T,F,p}{ - \immediate\write18{which~wget~&&~touch~\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_false_bool} - \file_if_exist:nTF{\jobname.aex}{ - \__download_rm:n{\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_true_bool} - }{} - \if_bool:N\l_tmpa_bool \prg_return_true: - \else: + }{ \prg_return_false: - \fi: + } } \end{MacroCode} \end{macro} - \end{macro} - \end{macro} - \end{macro} + \end{macro*} + \end{macro*} \subsection{Using cURL and wget} Actually using cURL and wget for downloading is simple, issuing @@ -262,20 +233,22 @@ \begin{macro}{\__download_curl_do:nn}[2] {Filename to save file to, or \cs{NoValue}} {URL to fetch the file from} + \changes{1.1}{cURL now follows redirects} \begin{MacroCode}{package} \cs_new:Npn\__download_curl_do:nn#1#2{ \IfNoValueTF{#1}{ \end{MacroCode} When no optional argument is given, we just invoke cURL with the - \texttt{-s} (silent) flag. + \texttt{-s} (silent) flag as well as the \texttt{-L} (follow + redirects) flag. \begin{MacroCode}{package} - \immediate\write18{curl~-s~#2} + \immediate\write18{curl~-L~-s~#2} }{ \end{MacroCode} When we \emph{do} have an optional argument, we add the \texttt{-o} flag to specify the output file. \begin{MacroCode}{package} - \immediate\write18{curl~-s~-o~#1~#2} + \immediate\write18{curl~-L~-s~-o~#1~#2} } } \end{MacroCode} @@ -289,7 +262,7 @@ \IfNoValueTF{#1}{ \end{MacroCode} With wget, we pass the \texttt{-q} (quiet) flag as well as the - \texttt{-nc} (no clobber) file, to avoid downloading files that + \texttt{-nc} (no clobber) flag, to avoid downloading files that already exist. \begin{MacroCode}{package} \immediate\write18{wget~-q~-nc~#2} @@ -304,48 +277,107 @@ \end{MacroCode} \end{macro} + \begin{macro}{\__download_ariaII_do:nn}[2] + {Filename to save file to, or \cs{NoValue}} + {URL to fetch the file from} +\begin{MacroCode}{package} +\cs_new:Npn\__download_ariaII_do:nn#1#2{ + \IfNoValueTF{#1}{ +\end{MacroCode} + With aria2, we pass the \texttt{-q} (quiet) flag as well as the + \texttt{--auto-file-renaming=false} (no clobber) flag, to avoid + creating a lot of duplicate files. +\begin{MacroCode}{package} + \immediate\write18{aria2c~-q~--auto-file-renaming=false~#2} + }{ +\end{MacroCode} + Again, when we have an optional argument we add the \texttt{-o} + flag to specify the output file. +\begin{MacroCode}{package} + \immediate\write18{aria2c~-q~--auto-file-renaming=false~-o~#1~#2} + } +} +\end{MacroCode} + \end{macro} + + \begin{macro}{\__download_axel_do:nn}[2] + {Filename to save file to, or \cs{NoValue}} + {URL to fetch the file from} +\begin{MacroCode}{package} +\cs_new:Npn\__download_axel_do:nn#1#2{ + \IfNoValueTF{#1}{ +\end{MacroCode} + With axel, we pass the \texttt{-q} (quiet) flag. +\begin{MacroCode}{package} + \immediate\write18{axel~-q~#2} + }{ +\end{MacroCode} + Again, when we have an optional argument we add the \texttt{-o} + flag to specify the output file. +\begin{MacroCode}{package} + \immediate\write18{axel~-q~-o~#1~#2} + } +} +\end{MacroCode} + \end{macro} + \subsection{The \texttt{auto} engine} The automatic engine uses the tests and macros of the other engines to provide functionality without selecting an engine. We first define a conditional that, in essence, steps through the available engines testing for their existence. If any of them exist, we're in business. + \begin{macro*}{\__download_if_auto_test:TF} \begin{macro}{\__download_if_auto_test:F} + \changes{1.1}{Added aria2c and axel engines to stack} \begin{MacroCode}{package} -\prg_new_conditional:Nnn\__download_if_auto_test:{F}{ -\end{MacroCode} - To avoid excessive nesting of conditional statements, we define - a boolean (initialized to \cs{c_false_bool}) which we then set to - \cs{c_true_bool} every time we find an engine that exists. -\begin{MacroCode}{package} - \bool_set:Nn\l_tmpb_bool{\c_false_bool} - \__download_if_curl_test:T{\bool_set:Nn\l_tmpb_bool{\c_true_bool}} - \__download_if_wget_test:T{\bool_set:Nn\l_tmpb_bool{\c_true_bool}} -\end{MacroCode} - We use that boolean to return a result from the conditional. -\begin{MacroCode}{package} - \if_bool:N\l_tmpb_bool +\prg_new_conditional:Nnn\__download_if_auto_test:{F,TF}{ + \__download_if_executable_test:nTF{wget}{ \prg_return_true: - \else: - \prg_return_false: - \fi: + }{ + \__download_if_executable_test:nTF{curl}{ + \prg_return_true: + }{ + \__download_if_executable_test:nTF{aria2c}{ + \prg_return_true: + }{ + \__download_if_executable_test:nTF{axel}{ + \prg_return_true: + }{ + \prg_return_false: + } + } + } + } } \end{MacroCode} \end{macro} + \end{macro*} We also define an automatic equivalent of the engine \texttt{_do} - macros, which selects wget if possible and cURL as a second choice. + macros, which selects the engines in the order wget, cURL, aria2 + and axel. \begin{macro}{\__download_auto_do:nn}[2] {Filename to save file to, or \cs{NoValue}} {URL to fetch the file from} \begin{MacroCode}{package} \cs_new:Npn\__download_auto_do:nn#1#2{ - \__download_if_wget_test:TF{ + \__download_if_executable_test:nTF{wget}{ \msg_info:nn{download}{use-wget} \__download_wget_do:nn{#1}{#2} }{ - \msg_info:nn{download}{use-curl} - \__download_curl_do:nn{#1}{#2} + \__download_if_executable_test:nTF{curl}{ + \msg_info:nn{download}{use-curl} + \__download_curl_do:nn{#1}{#2} + }{ + \__download_if_executable_test:nTF{aria2c}{ + \msg_info:nn{download}{use-ariaII} + \__download_ariaII_do:nn{#1}{#2} + }{ + \msg_info:nn{download}{use-axel} + \__download_axel_do:nn{#1}{#2} + } + } } } \end{MacroCode} @@ -369,16 +401,32 @@ \begin{MacroCode}{package} engine / auto .code:n = {\cs_gset_eq:NN\__download_do:nn\__download_auto_do:nn - \prg_new_eq_conditional:NNn\__download_if_test:\__download_if_auto_test:{F}}, + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_auto_test:TF + {\prg_return_true:}{\prg_return_false:}}}, \end{MacroCode} - We do the same for the cURL and wget options. + We do the same for the other options. \begin{MacroCode}{package} engine / curl .code:n = {\cs_gset_eq:NN\__download_do:nn\__download_curl_do:nn - \prg_new_eq_conditional:NNn\__download_if_test:\__download_if_curl_test:{F}}, + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{curl} + {\prg_return_true:}{\prg_return_false:}}}, engine / wget .code:n = {\cs_gset_eq:NN\__download_do:nn\__download_wget_do:nn - \prg_new_eq_conditional:NNn\__download_if_test:\__download_if_wget_test:{F}}, + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{wget} + {\prg_return_true:}{\prg_return_false:}}}, + engine / aria2 .code:n = + {\cs_gset_eq:NN\__download_do:nn\__download_ariaII_do:nn + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{aria2c} + {\prg_return_true:}{\prg_return_false:}}}, + engine / axel .code:n = + {\cs_gset_eq:NN\__download_do:nn\__download_axel_do:nn + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{axel} + {\prg_return_true:}{\prg_return_false:}}}, \end{MacroCode} \end{macro} \end{macro} @@ -427,6 +475,22 @@ \end{MacroCode} \Finale + \section{Installation} + The easiest way to install this package is using the package + manager provided by your \LaTeX\ installation if such a program + is available. Failing that, provided you have obtained the package + source (\file{download.tex} and \file{Makefile}) from either CTAN + or Github, running \texttt{make install} inside the source directory + works well. This will extract the documentation and code from + \file{download.tex}, install all files into the TDS tree at + \texttt{TEXMFHOME} and run \texttt{mktexlsr}. + + If you want to extract code and documentation without installing + the package, run \texttt{make all} instead. If you insist on not + using \texttt{make}, remember that packages distributed using + \pkg{skdoc} must be extracted using \texttt{pdflatex}, \emph{not} + \texttt{tex} or \texttt{latex}. + \PrintChanges \PrintIndex \printbibliography diff --git a/Master/texmf-dist/tex/latex/download/download.sty b/Master/texmf-dist/tex/latex/download/download.sty index c6b607fa522..c6f28829663 100644 --- a/Master/texmf-dist/tex/latex/download/download.sty +++ b/Master/texmf-dist/tex/latex/download/download.sty @@ -1,7 +1,7 @@ %% This is file `download.sty', generated from `download.tex' (key `package'). %% download - download files with LaTeX %% -%% Copyright (C) 2012 by Simon Sigurdhsson <sigurdhsson@gmail.com> +%% Copyright (C) 2012-2013 by Simon Sigurdhsson <sigurdhsson@gmail.com> %% %% This work may be distributed and/or modified under the %% conditions of the LaTeX Project Public License, either version 1.3 @@ -20,15 +20,17 @@ \RequirePackage{expl3,l3keys2e,pdftexcmds,xparse} \ProvidesExplPackage{download} - {2012/12/31}{1.0}{download files with LaTeX} + {2013/04/08}{1.1}{download files with LaTeX} \msg_new:nnnn{download}{no-write18}{Could~not~use~\string\write18!} {Please~run~`latex`~with~the~`--shell-escape`~flag.} -\msg_new:nnnn{download}{no-engine}{Could~not~find~cURL~or~wget!} - {Please~make~sure~either~cURL~or~wget~is~installed~and~in~your~PATH.} +\msg_new:nnnn{download}{no-engine}{Could~not~find~any~engine!} + {Please~make~sure~one~of~the~engines~is~installed~and~in~your~PATH.} \msg_new:nnnn{download}{no-name}{Using~\string\download\space~with~no~filename!} {This~means~I~will~download~the~file~even~if~it~already~exists.} \msg_new:nnn{download}{use-curl}{Using~cURL.} \msg_new:nnn{download}{use-wget}{Using~wget.} +\msg_new:nnn{download}{use-ariaII}{Using~aria2.} +\msg_new:nnn{download}{use-axel}{Using~axel.} \prg_new_conditional:Nnn\__download_if_shellescape:{F}{ \if_cs_exist:N\pdf@shellescape \if_int_compare:w\pdf@shellescape=\c_one @@ -43,37 +45,20 @@ \cs_new:Npn\__download_rm:n#1{ \immediate\write18{rm~#1} } -\prg_new_conditional:Nnn\__download_if_curl_test:{TF,T,F,p}{ - \immediate\write18{which~curl~&&~touch~\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_false_bool} +\prg_new_conditional:Npnn\__download_if_executable_test:n#1{TF,T,F,p}{ + \immediate\write18{which~#1~&&~touch~\jobname.aex} \file_if_exist:nTF{\jobname.aex}{ \__download_rm:n{\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_true_bool} - }{} - \if_bool:N\l_tmpa_bool \prg_return_true: - \else: - \prg_return_false: - \fi: -} -\prg_new_conditional:Nnn\__download_if_wget_test:{TF,T,F,p}{ - \immediate\write18{which~wget~&&~touch~\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_false_bool} - \file_if_exist:nTF{\jobname.aex}{ - \__download_rm:n{\jobname.aex} - \bool_set:Nn\l_tmpa_bool{\c_true_bool} - }{} - \if_bool:N\l_tmpa_bool - \prg_return_true: - \else: + }{ \prg_return_false: - \fi: + } } \cs_new:Npn\__download_curl_do:nn#1#2{ \IfNoValueTF{#1}{ - \immediate\write18{curl~-s~#2} + \immediate\write18{curl~-L~-s~#2} }{ - \immediate\write18{curl~-s~-o~#1~#2} + \immediate\write18{curl~-L~-s~-o~#1~#2} } } \cs_new:Npn\__download_wget_do:nn#1#2{ @@ -83,36 +68,85 @@ \immediate\write18{wget~-q~-nc~-O~#1~#2} } } -\prg_new_conditional:Nnn\__download_if_auto_test:{F}{ - \bool_set:Nn\l_tmpb_bool{\c_false_bool} - \__download_if_curl_test:T{\bool_set:Nn\l_tmpb_bool{\c_true_bool}} - \__download_if_wget_test:T{\bool_set:Nn\l_tmpb_bool{\c_true_bool}} - \if_bool:N\l_tmpb_bool +\cs_new:Npn\__download_ariaII_do:nn#1#2{ + \IfNoValueTF{#1}{ + \immediate\write18{aria2c~-q~--auto-file-renaming=false~#2} + }{ + \immediate\write18{aria2c~-q~--auto-file-renaming=false~-o~#1~#2} + } +} +\cs_new:Npn\__download_axel_do:nn#1#2{ + \IfNoValueTF{#1}{ + \immediate\write18{axel~-q~#2} + }{ + \immediate\write18{axel~-q~-o~#1~#2} + } +} +\prg_new_conditional:Nnn\__download_if_auto_test:{F,TF}{ + \__download_if_executable_test:nTF{wget}{ \prg_return_true: - \else: - \prg_return_false: - \fi: + }{ + \__download_if_executable_test:nTF{curl}{ + \prg_return_true: + }{ + \__download_if_executable_test:nTF{aria2c}{ + \prg_return_true: + }{ + \__download_if_executable_test:nTF{axel}{ + \prg_return_true: + }{ + \prg_return_false: + } + } + } + } } \cs_new:Npn\__download_auto_do:nn#1#2{ - \__download_if_wget_test:TF{ + \__download_if_executable_test:nTF{wget}{ \msg_info:nn{download}{use-wget} \__download_wget_do:nn{#1}{#2} }{ - \msg_info:nn{download}{use-curl} - \__download_curl_do:nn{#1}{#2} + \__download_if_executable_test:nTF{curl}{ + \msg_info:nn{download}{use-curl} + \__download_curl_do:nn{#1}{#2} + }{ + \__download_if_executable_test:nTF{aria2c}{ + \msg_info:nn{download}{use-ariaII} + \__download_ariaII_do:nn{#1}{#2} + }{ + \msg_info:nn{download}{use-axel} + \__download_axel_do:nn{#1}{#2} + } + } } } \keys_define:nn{download}{ engine .choice:, engine / auto .code:n = {\cs_gset_eq:NN\__download_do:nn\__download_auto_do:nn - \prg_new_eq_conditional:NNn\__download_if_test:\__download_if_auto_test:{F}}, + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_auto_test:TF + {\prg_return_true:}{\prg_return_false:}}}, engine / curl .code:n = {\cs_gset_eq:NN\__download_do:nn\__download_curl_do:nn - \prg_new_eq_conditional:NNn\__download_if_test:\__download_if_curl_test:{F}}, + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{curl} + {\prg_return_true:}{\prg_return_false:}}}, engine / wget .code:n = {\cs_gset_eq:NN\__download_do:nn\__download_wget_do:nn - \prg_new_eq_conditional:NNn\__download_if_test:\__download_if_wget_test:{F}}, + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{wget} + {\prg_return_true:}{\prg_return_false:}}}, + engine / aria2 .code:n = + {\cs_gset_eq:NN\__download_do:nn\__download_ariaII_do:nn + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{aria2c} + {\prg_return_true:}{\prg_return_false:}}}, + engine / axel .code:n = + {\cs_gset_eq:NN\__download_do:nn\__download_axel_do:nn + \prg_set_conditional:Nnn\__download_if_test:{F}{ + \__download_if_executable_test:nTF{axel} + {\prg_return_true:}{\prg_return_false:}}}, engine .initial:n = auto, engine .default:n = auto, } |