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|
% \iffalse meta-comment
%
%% File: l3sys-shell.dtx
%
% Copyright (C) 2018,2019 The LaTeX3 Project
%
% It may be distributed and/or modified under the conditions of the
% LaTeX Project Public License (LPPL), either version 1.3c of this
% license or (at your option) any later version. The latest version
% of this license is in the file
%
% http://www.latex-project.org/lppl.txt
%
% This file is part of the "l3experimental bundle" (The Work in LPPL)
% and all files in that bundle must be distributed together.
%
% -----------------------------------------------------------------------
%
% The development version of the bundle can be found at
%
% https://github.com/latex3/latex3
%
% for those people who are interested.
%
%<*driver|package>
\RequirePackage{expl3}
%</driver|package>
%<*driver>
\documentclass[full]{l3doc}
\begin{document}
\DocInput{\jobname.dtx}
\end{document}
%</driver>
% \fi
%
% \title{^^A
% The \pkg{l3sys-shell} package\\ System shell functions^^A
% }
%
% \author{^^A
% The \LaTeX3 Project\thanks
% {^^A
% E-mail:
% \href{mailto:latex-team@latex-project.org}
% {latex-team@latex-project.org}^^A
% }^^A
% }
%
% \date{Released 2019-09-19}
%
% \maketitle
%
% \begin{documentation}
%
% \begin{function}[added = 2018-07-28]{\sys_shell_cp:nn}
% \begin{syntax}
% \cs{sys_shell_cp:nn} \Arg{source} \Arg{dest}
% \end{syntax}
% Copies the files specified in the \meta{source} (which may include
% wildcards) to the \meta{dest}. The file paths should be specified using
% |/| as a path separator. Copying is \emph{not} recursive: only files at
% the path level given are copied. If unrestricted shell escape is not
% enabled, no action is attempted.
% \end{function}
%
% \begin{function}[added = 2018-07-27]{\sys_shell_mkdir:n}
% \begin{syntax}
% \cs{sys_shell_mkdir:n} \Arg{directory}
% \end{syntax}
% Creates the \meta{directory}, which should should be specified using |/| as
% a path separator. If unrestricted shell escape is not enabled, no action is
% attempted.
% \end{function}
%
% \begin{function}[added = 2018-07-28]{\sys_shell_mv:nn}
% \begin{syntax}
% \cs{sys_shell_mv:nn} \Arg{old} \Arg{new}
% \end{syntax}
% Moves the files from the \meta{old} to \meta{new} names/locations: the
% \meta{old} names may include wildcards. In both arguments, |/| should be
% used as the path separator. If unrestricted shell escape is not enabled, no
% action is attempted.
% \end{function}
%
% \begin{function}[added = 2018-07-27]{\sys_shell_rm:n}
% \begin{syntax}
% \cs{sys_shell_rm:n} \Arg{files}
% \end{syntax}
% Removes the \meta{files} (which may include wildcards). The file path should
% be specified using |/| as a path separator. If unrestricted shell escape is
% not enabled, no action is attempted.
% \end{function}
%
% \begin{function}[added = 2018-07-27]{\sys_shell_rmdir:n}
% \begin{syntax}
% \cs{sys_shell_rmdir:n} \Arg{directory}
% \end{syntax}
% Removes the \meta{directory}, which should should be specified using |/| as
% a path separator. If unrestricted shell escape is not enabled, no action is
% attempted.
% \end{function}
%
% \begin{function}[added = 2018-07-28]{\sys_shell_get_pwd:N}
% \begin{syntax}
% \cs{sys_shell_get_pwd:N} \meta{str var}
% \end{syntax}
% Sets the \meta{str var} to the present working directory (the output of
% |pwd| on Unix or |cd| on Windows). Note that on Windows this will contain
% string backslash chars (|\|). If unrestricted shell escape is not
% enabled, no action is taken.
% \end{function}
%
% \begin{function}[added = 2018-07-28]{\sys_shell_split_ls:nN}
% \begin{syntax}
% \cs{sys_shell_split_ls:N} \Arg{glob} \meta{seq}
% \end{syntax}
% Sets the \meta{seq var} to contain one entry per directory listing
% (equivalent to |ls -1| or |dir /b|) as specified by the \meta{glob}: the
% entries are strings. If unrestricted shell is not enabled, no action is
% taken.
% \end{function}
%
% \end{documentation}
%
% \begin{implementation}
%
% \section{\pkg{l3sys-shell} implementation}
%
% \begin{macrocode}
%<*initex|package>
% \end{macrocode}
%
% \begin{macrocode}
%<@@=sys>
% \end{macrocode}
%
% \begin{macrocode}
%<*package>
\ProvidesExplPackage{l3sys-shell}{2019-09-19}{}
{L3 Experimental system shell functions}
%</package>
% \end{macrocode}
%
% \begin{macro}[EXP]{\@@_path_to_win:n}
% \begin{macro}[EXP]{\@@_path_to_win:w}
% \begin{macro}[EXP]{\@@_path_to_win:N}
% A simple expandable search-and-replace for providing Windows-style paths.
% \begin{macrocode}
\cs_new:Npn \@@_path_to_win:n #1
{
\exp_after:wN \@@_path_to_win:w \tl_to_str:n {#1} ~ \q_stop
}
\cs_new:Npn \@@_path_to_win:w #1 ~ #2 \q_stop
{
\@@_path_to_win:N #1 \q_nil
\tl_if_empty:nF {#2}
{
\c_space_tl
\@@_path_to_win:w #2 \q_stop
}
}
\cs_new:Npn \@@_path_to_win:N #1
{
\quark_if_nil:NF #1
{
\token_if_eq_meaning:NNTF #1 /
{ \c_backslash_str }
{#1}
\@@_path_to_win:N
}
}
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\sys_shell_cp:nn}
% Simple Unix-like file copying: at some stage we may need a directory-only
% version as Windows and Unix have different requirements here.
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_cp:nn #1#2
{
\sys_if_shell_unrestricted:T
{
\sys_shell_now:x
{
\sys_if_platform_unix:T
{
cp~-f~ \exp_not:N \tl_to_str:n {#1} ~
\exp_not:N \tl_to_str:n {#2}
}
\sys_if_platform_windows:T
{
copy~/y~ \exp_not:N \@@_path_to_win:n {#1} ~
\exp_not:N \@@_path_to_win:n {#2}
}
}
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\sys_shell_mkdir:n}
% Windows (with the extensions) will automatically make directory trees but
% issues a warning if the directory already exists: avoid by including a
% test.
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_mkdir:n #1
{
\sys_if_shell_unrestricted:T
{
\sys_shell_now:x
{
\sys_if_platform_unix:T
{ mkdir~-p~ \exp_not:N \tl_to_str:n {#1} }
\sys_if_platform_windows:T
{
if~not~exist~
\exp_not:N \@@_path_to_win:n { #1 / nul } ~
mkdir~ \exp_not:N \@@_path_to_win:n {#1}
}
}
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\sys_shell_mv:nn}
% On Windows we do not have a single |mv| operation, so copy-and-delete
% instead.
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_mv:nn #1#2
{
\sys_if_shell_unrestricted:T
{
\sys_shell_now:x
{
\sys_if_platform_unix:T
{
mv~ \exp_not:N \tl_to_str:n {#1} ~
\exp_not:N \tl_to_str:n {#2}
}
\sys_if_platform_windows:T
{
copy~/y~ \exp_not:N \@@_path_to_win:n {#1} ~
\exp_not:N \@@_path_to_win:n {#2}
\token_to_str:N & \token_to_str:N &
del~/f~/q~\exp_not:N \@@_path_to_win:n {#1}
}
}
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\sys_shell_rm:n}
% Deletion: obviously a big health warning here!
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_rm:n #1
{
\sys_if_shell_unrestricted:T
{
\sys_shell_now:x
{
\sys_if_platform_unix:T
{ rm~-f~ \exp_not:N \tl_to_str:n {#1} }
\sys_if_platform_windows:T
{ del~/f~/q~ \exp_not:N \@@_path_to_win:n {#1} }
}
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\sys_shell_rmdir:n}
% When removing a directory, we create it first as that avoids errors in
% the Windows case.
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_rmdir:n #1
{
\sys_if_shell_unrestricted:T
{
\sys_shell_mkdir:n {#1}
\sys_shell_now:x
{
\sys_if_platform_unix:T
{ rm~-rf~ \exp_not:N \tl_to_str:n {#1} }
\sys_if_platform_windows:T
{ rmdir~/s~/q~ \exp_not:N \@@_path_to_win:n {#1} }
}
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{variable}{\l_@@_tmp_tl}
% Scratch space.
% \begin{macrocode}
\tl_new:N \l_@@_tmp_tl
% \end{macrocode}
% \end{variable}
%
% \begin{macro}{\sys_shell_get_pwd:N}
% Getting the path is easy: the main work is avoiding loosing any
% information. (This information can be obtained using the recorder file:
% that does not require shell escape. However, it's hard to see how it might
% be useful without the other file functions.)
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_get_pwd:N #1
{
\sys_if_shell_unrestricted:T
{
\exp_not:N \sys_shell_get:nnN
{
\sys_if_platform_unix:T { pwd }
\sys_if_platform_windows:T { cd }
}
{
\char_set_catcode_other:N \exp_not:N \\
\char_set_catcode_other:N \exp_not:N \#
\char_set_catcode_other:N \exp_not:N \~
\char_set_catcode_other:N \exp_not:N \%
\char_set_catcode_space:N \exp_not:N \ %
\tex_endlinechar:D -1 \scan_stop:
}
\exp_not:N \l_@@_tmp_tl
\str_set:NV #1 \exp_not:N \l_@@_tmp_tl
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\sys_shell_split_ls:nN}
% Getting a one-per-line listing is easy enough. We need to set
% \cs{ExplSyntaxOff} as that deals with the end-of-line character. After that,
% just a case of tidying up. The listing always ends in |^^M| so there is an
% extra entry to trim.
% \begin{macrocode}
\cs_new_protected:Npx \sys_shell_split_ls:nN #1#2
{
\sys_if_shell_unrestricted:T
{
\exp_not:N \sys_shell_get:nnN
{
\sys_if_platform_unix:T { ls~-1~ #1 }
\sys_if_platform_windows:T { dir~/b~ #1 }
}
{
\ExplSyntaxOff
\char_set_catcode_other:N \exp_not:N \\
\char_set_catcode_other:N \exp_not:N \#
\char_set_catcode_other:N \exp_not:N \~
\char_set_catcode_other:N \exp_not:N \%
\char_set_catcode_other:n { 13 }
}
\exp_not:N \l_@@_tmp_tl
\str_set:NV \exp_not:N \l_@@_tmp_tl \exp_not:N \l_@@_tmp_tl
\seq_set_split:NnV #2 { \char_generate:nn { `\^^M } { 12 } }
\exp_not:N \l_@@_tmp_tl
\seq_pop_right:NN #2 \exp_not:N \l_@@_tmp_tl
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macrocode}
%</initex|package>
% \end{macrocode}
%
% \end{implementation}
%
% \PrintIndex
|