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diff --git a/Master/texmf-dist/tex/latex/xsim/xsim.verbwrite.code.tex b/Master/texmf-dist/tex/latex/xsim/xsim.verbwrite.code.tex new file mode 100644 index 00000000000..ae0338463b1 --- /dev/null +++ b/Master/texmf-dist/tex/latex/xsim/xsim.verbwrite.code.tex @@ -0,0 +1,208 @@ +% ---------------------------------------------------------------------------- +% the XSIM package - verbwrite module +% +% eXercise Sheets IMproved +% +% ---------------------------------------------------------------------------- +% Clemens Niederberger +% Web: https://github.com/cgnieder/xsim +% E-Mail: contact@mychemistry.eu +% ---------------------------------------------------------------------------- +% Copyright 2017 Clemens Niederberger +% +% 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 Clemens Niederberger. +% ---------------------------------------------------------------------------- +% If you have any ideas, questions, suggestions or bugs to report, please +% feel free to contact me. +% ---------------------------------------------------------------------------- +\XSIMmodule{verbwrite}{write contents of environments verbatim to files} + +\xsim_load_modules:n {base} + +\iow_new:N \l__file_contents_iow +\tl_new:N \l_xsim_file_begin_tl +\tl_new:N \l_xsim_file_end_tl +\int_new:N \l_xsim_line_gobble_int +\int_zero:N \l_xsim_line_gobble_int + +\tl_const:Nx \c__xsim_backslash_char_tl { \cs_to_str:N \\ } + +\group_begin: + \char_set_catcode_other:n {37} + \tl_const:Nn \c__xsim_percent_char_tl {%} +\group_end: + +% ---------------------------------------------------------------------------- + +% the `final' option will prevent writing to files: +% #1: write stream +% #2: file name +\cs_new_protected:Npn \__xsim_open_stream:Nn #1#2 + { + \file_if_exist:nTF {#2} + { \xsim_if_final:F { \iow_open:Nn #1 {#2} } } + { + % \g_xsim_final_bool is a global variable; however, if it is true and + % the exercise file doesn't exist, yet, we need to set it locally to + % false in order to ensure that the file is correctly written and the + % stream closed afterwards + \bool_set_false:N \g_xsim_final_bool + \iow_open:Nn #1 {#2} + } + } + +% #1: write stream +\cs_new_protected:Npn \__xsim_close_stream:N #1 + { \xsim_if_final:F { \iow_close:N #1 } } + +% #1: write stream +% #1: contents +\cs_new_protected:Npn \__xsim_write_to_stream:Nn #1#2 + { + \xsim_if_final:F + { + % remove the /one/ space token with catcode 10 that is inserted if + % no options are given to the surrounding environment: + \tl_set:Nn \l__xsim_tmpa_tl {#2} + \tl_remove_once:Nn \l__xsim_tmpa_tl {~} + \int_zero:N \l__xsim_tmpa_int + \int_while_do:nn { \l__xsim_tmpa_int < \l_xsim_line_gobble_int } + { + \int_incr:N \l__xsim_tmpa_int + \tl_set:Nx \l__xsim_tmpa_tl { \tl_tail:N \l__xsim_tmpa_tl } + } + \iow_now:NV #1 \l__xsim_tmpa_tl + } + } +\cs_generate_variant:Nn \__xsim_write_to_stream:Nn {Nx} + +\cs_new:Npn \__xsim_tab: { \c_space_tl \c_space_tl } +\cs_new:Npn \__xsim_par: { ^^J ^^J } + +% the following is inspired by the definition of the `filecontents' +% environment: +% #1: boolean - if true an active eol needs to be inserted before +% starting to write +% #2: file name +\cs_new_protected:Npn \xsim_file_write_start:nn #1#2 + { + % we need to insert an active ^^M if no options are given + % see http://tex.stackexchange.com/q/9035/5049 reasons + \use:nx + { \__xsim_file_write_start:n {#2} } + { \bool_if:nF {#1} { \c__xsim_active_eol_tl } } + } +\cs_generate_variant:Nn \xsim_file_write_start:nn {nV} + +\group_begin: +\char_set_catcode_active:n {13} % ^^M (carriage return, endlinechar) +\char_set_catcode_active:n {12} % ^^L (form feed) +\char_set_catcode_active:n {9} % ^^I (horizontal tab) +% +\tl_const:Nn \c__xsim_active_eol_tl {^^M} % +% +% #1: file name +\cs_new_protected:Npn \__xsim_file_write_start:n #1 % + { % + \group_begin: % + \xsim_if_final:TF % + { \xsim_verbose:x { Not~ (re-)writing~ file~ `#1'. } } % + { \xsim_verbose:x { (Re-)writing~ file~ `#1'. } } % + \__xsim_open_stream:Nn \l__file_contents_iow {#1} % + \tl_if_blank:VF \l_xsim_file_begin_tl % + { % + \xsim_if_final:F % + { % + \iow_now:Nx \l__file_contents_iow % + { \l_xsim_file_begin_tl } % + } % + } % + \seq_map_inline:Nn \l_char_special_seq % + { \char_set_catcode_other:N ##1 } % + \int_step_inline:nnnn {128} {1} {255} % + { \char_set_catcode_letter:n {##1} } % + \tl_set:Nx \l__xsim_tmpa_tl % + { \c__xsim_backslash_char_tl end \cs_to_str:N \{ \@currenvir \cs_to_str:N \} } % + \use:x % + { % + \cs_set:cpn {__xsim_tmpa:www} % + ####1 \l__xsim_tmpa_tl % + ####2 \l__xsim_tmpa_tl % + ####3 \exp_not:N \q_stop: % + } % + { % + \tl_if_blank:nTF {##3} % + { \__xsim_write_to_stream:Nn \l__file_contents_iow {##1} } % + { % + \cs_set:Npx \__xsim_M:w { \exp_not:N \end {\@currenvir} } % + \char_set_active_eq:nN {13} \__xsim_M:w % + % the last line is `##1 \end{\@currenvir} ##2': + % \tl_if_blank:nF {##1} % + % { \__xsim_write_to_stream:Nn \l__file_contents_iow {##1} }% + % \tl_if_blank:nF {##2} % + % {}% + } % + ^^M % + } % + \char_set_catcode_active:n {13} % + \char_set_catcode_active:n {12} % + \char_set_catcode_active:n {9} % + \cs_set:Npx \__xsim_M:w ##1 ^^M % + { % + \exp_not:N \__xsim_tmpa:www ##1 % + \l__xsim_tmpa_tl % + \l__xsim_tmpa_tl % + \exp_not:N \q_stop: % + } % + \char_set_active_eq:nN {13} \__xsim_M:w % + \char_set_active_eq:nN {12} \__xsim_par: % + \char_set_active_eq:nN {9} \__xsim_tab: % + } % +\group_end: + +\cs_new_protected:Npn \xsim_file_write_stop: + { + \tl_if_blank:VF \l_xsim_file_end_tl + { + \xsim_if_final:F + { + \iow_now:Nx \l__file_contents_iow + { \l_xsim_file_end_tl } + } + } + \__xsim_close_stream:N \l__file_contents_iow + \group_end: + } + +% ---------------------------------------------------------------------------- + +\NewDocumentCommand \XSIMfilewritestart {sm} + { + \IfBooleanTF {#1} + { \xsim_file_write_start:nn { \c_false_bool } {#2} } + { \xsim_file_write_start:nn { \c_true_bool } {#2} } + } + +\NewDocumentCommand \XSIMfilewritestop {} + { \xsim_file_write_stop: } + +\NewDocumentCommand \XSIMsetfilebegin {+m} + { \tl_set:Nn \l_xsim_file_begin_tl {#1} } + +\NewDocumentCommand \XSIMsetfileend {+m} + { \tl_set:Nn \l_xsim_file_end_tl {#1} } + +\NewDocumentCommand \XSIMgobblechars {m} + { \int_set:Nn \l_xsim_line_gobble_int {#1} } + +% ---------------------------------------------------------------------------- |