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根据条件格式化文本

tag-icon • tag-icon conditionals programming expl3
根据条件格式化文本

我有一些条件存储在布尔变量中，例如

\bool_new:N \l_word_numbered_bool
\bool_new:N \l_word_lowercase_bool
\bool_new:N \l_word_centering_bool

我需要以最简单的方式根据布尔变量的值来格式化单词（或段落）。

首先想到的是使用 many \bool_if:NTF-s 但我认为应该有一种更简单的方法。

我的最终目标是创建该部分的自定义视图。

平均能量损失

\documentclass[12pt]{article}
\usepackage{expl3, xtemplate,xparse}

\ExplSyntaxOn

\DeclareObjectType { sectioning } { 1 }

\DeclareTemplateInterface{sectioning}{section}{1}
{
    numbered : boolean = true ,
    space-above : length  = 2ex ,
    space-below : length  = 2ex ,
    font-shape : choice {italic, slanted, normal} = normal,
    lowercase : choice {true, false} = true,
    centering : choice{true, false} = false,
    font-weight : choice {bold, normal} = bold,
    font-color : tokenlist,
    font-size : length = 12pt,
    %font-face : tokenlist,
}
% the interface for the template `initial':

% variables first:
\bool_new:N \l_sectioning_numbered_bool
\dim_new:N \l_sectioning_space_above_dim
\dim_new:N \l_sectioning_space_below_dim
\bool_new:N \l_sectioning_lowercase_bool
\bool_new:N \l_sectioning_centering_bool
\dim_new:N \l_font_size_dim


\DeclareTemplateCode {sectioning} {section} {1}
{
    numbered        =           \l_sectioning_numbered_bool ,
    font-size       =           \l_font_size_dim,
    lowercase       =           {
        true        =           \bool_set_true:N \l_sectioning_lowercase_bool,
        false       =           \bool_set_false:N \l_sectioning_lowercase_bool,
    },

    centering       =           {
        true        =           \bool_set_true:N \l_sectioning_centering_bool,
        false       =           \bool_set_false:N \l_sectioning_centering_bool,
    },


    space-above     =           \l_sectioning_space_above_dim ,
    space-below     =           \l_sectioning_space_below_dim ,
    font-shape      = {
        italic      =           \cs_set_nopar:Nn \afontshape: {\itshape},
        slanted     =           \cs_set_nopar:Nn \afontshape: {\itshape},
        normal      =           \cs_set_nopar:Nn \afontshape: {\upshape},
    },
    font-weight     = {
        bold        =           \cs_set_nopar:Nn \afontseries: {\bfseries},
        normal      =           \cs_set_nopar:Nn \afontseries: {\rmfamily},
    },
    %font-face      =           \l_font_tl,
    font-color      =           \l_tmpa_tl, 
}
{
    \AssignTemplateKeys
    \vskip\l_sectioning_space_above_dim
      \group_begin:
      \color\l_tmpa_tl
      %\cs:w \l_font_tl \cs_end: 
      \fontsize{\l_font_size_dim}{\l_font_size_dim}\afontseries:\afontshape:\selectfont 
      \bool_if:NTF \l_sectioning_lowercase_bool {
      \bool_if:NTF \l_sectioning_numbered_bool {\thesection.\, \tl_to_lowercase:n {#1}}{\tl_to_lowercase:n {#1}}
    }
    {
        \bool_if:NTF \l_sectioning_numbered_bool {\thesection.\, \tl_to_uppercase:n {#1}}{\tl_to_uppercase:n {#1}}
    }

      \group_end:
      \addtocounter{section}{1}
    \vskip\l_sectioning_space_below_dim
}


% a few instances, starting with `fullname':
\DeclareInstance {sectioning}{standart}{section}
{
    numbered    =   true,
    font-shape  =   italic,
    font-weight =   bold,
    lowercase   =   true,
    space-below =   2em,
    %font-face  =   arial,
    font-size = 12 pt
}


% the user command:
\DeclareDocumentCommand \sectant{m}
{
\UseInstance{sectioning}{standart}{#1}
}
\ExplSyntaxOff

\begin{document}

\sectant{Something}



\end{document}

取决于

\DeclareInstance {sectioning}{standart}{section}
{
    numbered    =   false,
    font-shape  =   italic,
    font-weight =   bold,
    lowercase   =   false,
    space-below =   2em,
    %font-face  =   arial,
}

我期望所需的格式。我的 MWE 是可行的，但正如您在下面看到的，检查代码的大小写\sectant{Something}部分看起来非常糟糕。upper/lowernumbered/unnumbered

  \bool_if:NTF \l_sectioning_lowercase_bool {
  \bool_if:NTF \l_sectioning_numbered_bool {\thesection.\, \tl_to_lowercase:n {#1}}{\tl_to_lowercase:n {#1}}
}
{
    \bool_if:NTF \l_sectioning_numbered_bool {\thesection.\, \tl_to_uppercase:n {#1}}{\tl_to_uppercase:n {#1}}
}

答案1

\bool_if:NT \l_sectioning_numbered_bool { \thesection.\ }
\bool_if:NTF \l_sectioning_lowercase_bool
 { \text_lowercase:n } { \text_uppercase:n } { #1 }

在这种情况下，我认为这就足够了。可能更清楚的是

\bool_if:NT \l_sectioning_numbered_bool { \thesection.\ }
\bool_if:NTF \l_sectioning_lowercase_bool
 { \text_lowercase:n { #1 } }
 { \text_uppercase:n { #1 } }

最后一个布尔值，可以在其他情况下使用，甚至可以完成（注意，我缩短了名称以使其适合一行）

\use:c { text_ \bool_if:NTF \l_sect_lower_bool { lower } { upper } case:n } { #1 }

我发现你没有做的一件事是将“包”的名称添加到你的定义中。例如，他们可以携带sk（sergiokapone）

\bool_new:N \l_sk_sectioning_numbered_bool
\dim_new:N \l_sk_sectioning_space_above_dim
\dim_new:N \l_sk_sectioning_space_below_dim
\bool_new:N \l_sk_sectioning_lowercase_bool
\bool_new:N \l_sk_sectioning_centering_bool
\dim_new:N \l_sk_font_size_dim

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