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%%
%% This is file `conteq.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% conteq.dtx (with options: `package')
%% conteq.dtx (with options: `layouts')
%% ----------------------------------------------------------------
%% conteq --- continued equalities
%% E-mail: mail@joachim-breitner.de
%% Released under the LaTeX Project Public License v1.3c or later
%% See http://www.latex-project.org/lppl.txt
%% ----------------------------------------------------------------
%%
\NeedsTeXFormat{LaTeX2e}
\RequirePackage{expl3}
\ProvidesExplPackage
{conteq} % Package name
{2013/05/23} % Release date
{0.1} % Release version
{Various layouts for continued equalities} % Description
\RequirePackage{amsmath}
\RequirePackage{environ}
\msg_new:nnn
{conteq}
{empty}
{ \msg_warning_text:n{conteq}:~Empty~conteq~environment~\msg_line_context: }
\msg_new:nnn
{conteq}
{ignoreddata}
{ \msg_warning_text:n{conteq}:~Ignored~text~\msg_line_context: }
\msg_new:nnn
{conteq}
{undefinedlayout}
{ \msg_critical_text:n{conteq}:~Undefined~layout~``#1''~\msg_line_context: }
\tl_new:N \l_conteq_default_layout_tl
\tl_new:N \l_conteq_layout_tl
\tl_new:N \l_conteq_body_tl
\tl_new:N \l_conteq_lines_seq
\tl_new:N \l_conteq_cells_seq
\tl_new:N \l_conteq_head_tl
\tl_new:N \l_conteq_lastline_tl
\tl_new:N \l_conteq_rhs_tl
\tl_new:N \l_conteq_expl_tl
\tl_new:N \l_conteq_result_tl
\cs_new_protected:Nn \conteq_set_default_layout:n {
\tl_set:Nn \l_conteq_default_layout_tl {#1}
}
\cs_new_eq:NN \ConteqSetDefaultLayout \conteq_set_default_layout:n
\cs_new_protected:Nn \conteq_define_layout:nnnnnnn {
\cs_new_protected:cn {conteq_#1_begin:} { #2 }
\cs_new_protected:cn {conteq_#1_lhs:n} { #3 }
\cs_new_protected:cn {conteq_#1_rhs_only:n} { #4 }
\cs_new_protected:cn {conteq_#1_rhs_expl:nn} { #5 }
\cs_new_protected:cn {conteq_#1_nl:} { #6 }
\cs_new_protected:cn {conteq_#1_end:} { #7 }
}
\cs_new_eq:NN \ConteqDefineLayout \conteq_define_layout:nnnnnnn
\cs_new:Npn \conteq_args_once:Nn #1#2 {
\exp_not:o {#1 {#2}}
}
\cs_generate_variant:Nn \conteq_args_once:Nn {NV}
\cs_new:Npn \conteq_args_once:Nnn #1#2#3 {
\exp_not:o {#1 {#2}{#3}}
}
\cs_generate_variant:Nn \conteq_args_once:Nnn {NVV}
\cs_new_protected:Npn \conteq_print_line:Nnn #1#2#3 {
\seq_set_split:Nnn \l_conteq_cells_seq { & } {#2}
\seq_pop_left:NN \l_conteq_cells_seq \l_conteq_rhs_tl
\tl_clear:N \l_conteq_expl_tl
\seq_if_empty:NF \l_conteq_cells_seq {
\seq_pop_left:NN \l_conteq_cells_seq \l_conteq_expl_tl
}
\tl_if_blank:VTF \l_conteq_expl_tl {
\tl_put_right:Nx #1 {
\conteq_args_once:NV \conteq_rhs_only:n \l_conteq_rhs_tl
}
}{
\tl_set:Nx \l_tmpa_tl {\exp_not:N \text {\exp_not:N \ConteqExplStyle {\exp_not:V \l_conteq_expl_tl}}}
\tl_put_right:Nx #1 {
\conteq_args_once:NVV \conteq_rhs_expl:nn \l_conteq_rhs_tl \l_tmpa_tl
}
}
\seq_if_empty:NF \l_conteq_cells_seq {
\msg_warning:nn{conteq}{ignoreddata}
}
\tl_put_right:Nn #1 {#3}
}
\cs_generate_variant:Nn \conteq_print_line:Nnn {Nno}
\cs_generate_variant:Nn \conteq_print_line:Nnn {NVn}
\NewEnviron{conteq}[1][\l_conteq_default_layout_tl]{
\tl_set:NV \l_conteq_body_tl \BODY
\tl_if_blank:oT \l_conteq_body_tl{
\msg_warning:nn{conteq}{empty}
}
\tl_set:Nn \l_conteq_layout_tl {#1}
\cs_if_exist:cTF {conteq_ \l_conteq_layout_tl _ begin:}{
\clist_map_inline:nn{begin:, lhs:n,rhs_only:n, rhs_expl:nn, nl:, end:}{
\cs_set_eq:cc {conteq_##1}{conteq_\l_conteq_layout_tl _##1}
}
}{
\msg_critical:nnx{conteq}{undefined layout}{\l_conteq_layout_tl}
}
\seq_set_split:NnV \l_conteq_lines_seq { \\ } \l_conteq_body_tl
\tl_clear:N \l_conteq_result_tl
\int_case:nnn {\seq_count:N \l_conteq_lines_seq}
{
{1} {
\tl_put_right:NV \l_conteq_result_tl \conteq_begin:
\tl_put_right:NV \l_conteq_result_tl \l_conteq_body_tl
\tl_put_right:NV \l_conteq_result_tl \conteq_end:
}
}{
\seq_pop_left:NN \l_conteq_lines_seq \l_conteq_head_tl
\seq_pop_right:NN \l_conteq_lines_seq \l_conteq_lastline_tl
\tl_put_right:NV \l_conteq_result_tl \conteq_begin:
\tl_put_right:Nx \l_conteq_result_tl {
\conteq_args_once:NV \conteq_lhs:n \l_conteq_head_tl
}
\seq_map_inline:Nn \l_conteq_lines_seq {
\conteq_print_line:Nno \l_conteq_result_tl {##1} {\conteq_nl:}
}
\conteq_print_line:NVn \l_conteq_result_tl \l_conteq_lastline_tl {}
\tl_put_right:No \l_conteq_result_tl \conteq_end:
}
% Use this for debugging
%\tl_show:N \l_conteq_result_tl
\tl_use:N \l_conteq_result_tl
}
\ConteqDefineLayout
{plain}
{\begin{align*}}
{ #1 }
{ & #1 }
{ & #1 && #2 }
{ \\ }
{\end{align*}}
\ConteqSetDefaultLayout{plain}
\ConteqDefineLayout
{explline}
{\begin{align*}}
{ #1 }
{ & #1 }
{ & #1 \\ & \mathrel{\phantom{=}} #2 }
{ \\ }
{\end{align*}}
\ConteqDefineLayout
{headline}
{\begin{align*}}
{ &\mathrel{\phantom{=}} #1 \\ }
{ & #1 }
{ & #1 && #2 }
{ \\ }
{\end{align*}}
\ConteqDefineLayout
{onecolumn}
{\begin{align*}}
{ &\mathrel{\phantom{=}} #1 \\ }
{ & #1 }
{ & #1 \\ & \mathrel{\phantom{=}} #2 }
{ \\ }
{\end{align*}}
\ConteqDefineLayout
{oneline}
{\[}
{ #1 }
{ #1 }
{ #1 }
{}
{\]}
\newcommand{\ConteqExplStyle}[1]{\{~#1~\}}
%%
%% Copyright (C) 2013 by Joachim Breitner <mail@joachim-breitner.de>
%%
%% This work 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 work is "maintained" (as per LPPL maintenance status) by
%% Joachim Breitner.
%%
%% This work consists of the file conteq.dtx
%% and the derived files conteq.ins,
%% conteq.pdf and
%% conteq.sty.
%%
%%
%% End of file `conteq.sty'.
|
