我正在尝试根据命令的值制作一个包含条件行的表格。问题是我收到以下错误：
Misplaced alignment tab character &. \TableFunctionConf
以下是我想做的事情：
\documentclass[
10pt,
paper=a4,
twoside=false,
openany,
]{scrbook}
\usepackage{tabularray}
\newcommand{\SignalName}{My name}
\newcommand{\SignalA}{1}
\newcommand{\SignalB}{1}
\newcommand{\SignalC}{1}
\newcommand{\SignalD}{1}
\newcommand{\TableFunctionConf}
{
\begin{tblr}
{
colspec = cX,
hlines,
vlines,
width = {0.8\textwidth},
measure = vbox,
row{1} = {font=\bfseries, bg=brown9}
}
Function config. & Description \\
Not Used & The \SignalName\ will not be used in this application \\
\ifnum\SignalA = 1 {Type A & Bla bla AAAA \\ } \fi
\ifnum\SignalB = 1 {Type B & Bla bla BBBB \\ } \fi
\ifnum\SignalC = 1 {Type C & Bla bla CCCC \\ } \fi
\ifnum\SignalD = 1 {Type D & Bla bla DDDD \\ } \fi
\end{tblr}
}
\begin{document}
bla bla bla
\TableFunctionConf
\end{document}
有人知道如何解决这个问题吗？谢谢，
编辑：我按照@Cicada 的建议尝试了以下操作，但仍然收到相同的错误消息（当然希望我正确理解了该评论）。
\documentclass[
10pt,
paper=a4,
twoside=false,
openany,
]{scrbook}
\usepackage{tabularray}
\newcommand{\SignalName}{My name}
\newcommand{\RowA}{Type A & Bla bla AAAA \\ }
\newcommand{\TableFunctionConf}
{
\begin{tblr}
{
colspec = cX,
hlines,
vlines,
width = {0.8\textwidth},
measure = vbox,
row{1} = {font=\bfseries, bg=brown9}
}
Function config. & Description \\
Not Used & The \SignalName\ will not be used in this application \\
\RowA
\end{tblr}
}
\begin{document}
bla bla bla
\TableFunctionConf
\end{document}
所以我猜测错误不在于条件本身，而在于使用一行内容的命令......
答案1
由于tabularray读取环境内容的方式tblr，您必须已经解决了\ifnum测试并拥有&支撑组的外部。
下面使用\expanded来扩展内容，然后才能完成其工作。请注意，您必须使用或tblr来保护您不想扩展的宏。\noexpand\<macro>\unexpanded{<stuff>}
\documentclass{article}
\usepackage{xcolor}
\usepackage{tabularray}
\UseTblrLibrary{varwidth}
\newcommand{\SignalName}{My name}
\newcommand{\SignalA}{0}
\newcommand{\SignalB}{1}
\newcommand{\SignalC}{1}
\newcommand{\SignalD}{1}
\newcommand{\RowA}{Type A & Bla bla AAAA \\ }
\newcommand\userow[2]{#2\unexpanded{#1}}
\newcommand{\TableFunctionConf}
{%
\expanded
{%
\noexpand\begin{tblr}
{
colspec = cX,
hlines,
vlines,
width = {0.8\noexpand\textwidth},
measure = vbox,
row{1} = {font=\noexpand\bfseries, bg=brown9}
}
Function config. & Description \noexpand\\
Not Used & The \noexpand\SignalName\noexpand\ will not be used
in this application \noexpand\\
\ifnum\SignalA=1 \userow{Type A & Bla bla AAAA\\}\fi
\ifnum\SignalB=1 \userow{Type B & Bla bla BBBB\\}\fi
\ifnum\SignalC=1 \userow{Type C & Bla bla CCCC\\}\fi
\ifnum\SignalD=1 \userow{Type D & Bla bla DDDD\\}\fi
\noexpand\end{tblr}%
}%
}
\begin{document}
bla bla bla
\TableFunctionConf
\end{document}
答案2
可以在多个地方进行过滤。
这里，在构建表之前对传入的数据流（将成为行数据）进行过滤。
expl3 序列用于存储一组逗号分隔的记录（行）。然后迭代该序列以识别分号分隔的字段（列）。条件过滤将记录结构中的占位符设置为空（{}），或设置为有效的记录格式。分隔符是任意选择的。
colspec=为了方便更改列规格，将环境值设为tblr参数。
它看起来像是tabularray使用了一些临时 expl3 变量，因此为这个 MWE 定义了一个独立集。
平均能量损失
\documentclass{article}
\usepackage{xcolor}
\usepackage{tabularray}
\newcommand{\SignalName}{My name}
\ExplSyntaxOn
\cs_generate_variant:Nn
\seq_set_split:Nnn
{ cnx }
\cs_generate_variant:Nn
\seq_gset_split:Nnn
{ cnx }
\seq_new:N \g_kr_tmpa_seq
\seq_new:N \l_kr_tmpb_seq
\tl_new:N \l_kr_tmpa_tl
\tl_new:N \l_kr_tmpb_tl
\tl_new:N \l_kr_tmpc_tl
\tl_new:N \g_kr_tmpd_tl
\int_new:N \l_kr_numrows_int
\NewDocumentCommand { \tableload } { +m } {
\seq_gclear:c
{ g_kr_tmpa_seq }
\seq_gset_split:cnx
{ g_kr_tmpa_seq }
{ , }
{ #1 }
% \seq_show:c
% { g_kr_tmpa_seq }
}
\NewDocumentCommand { \tablebuild } { } {
\int_set:Nn
\l_kr_numrows_int
{
\seq_count:N \g_kr_tmpa_seq
}
% table contents holder
\tl_gclear:N \g_kr_tmpd_tl
% for each row
\int_step_variable:nnnNn
{ 1 }
{ 1 }
{ \l_kr_numrows_int }
\l_kr_tmpa_tl %row number
{
\seq_set_split:cnx
{ l_kr_tmpb_seq }
{ ; } % separator
{ \seq_item:Nn \g_kr_tmpa_seq { \l_kr_tmpa_tl } }
% for each column
\int_step_variable:nnnNn
{ 1 }
{ 1 }
{ \seq_count:N \l_kr_tmpb_seq }
\l_kr_tmpb_tl %column number
{
\tl_set:Nx
\l_kr_tmpc_tl
{
\seq_item:Nn
\l_kr_tmpb_seq
{ \l_kr_tmpb_tl }
}
% cell contents:
\tl_gput_right:NV \g_kr_tmpd_tl \l_kr_tmpc_tl
\int_compare:nNnT
{ \l_kr_tmpb_tl }
<
{ \seq_count:N \l_kr_tmpb_seq }
{ \tl_gput_right:Nn \g_kr_tmpd_tl { & } }
} %end column code
\int_compare:nNnT
{ \l_kr_tmpa_tl }
<
{ \seq_count:N \g_kr_tmpa_seq }
{ \tl_gput_right:Nn \g_kr_tmpd_tl { \\ } }
} % end row code
% \tl_show:N \g_kr_tmpd_tl
}
\NewDocumentCommand \myTable { O{Q[c]X[-1]} } %1=colspec
{
\tablebuild
\tl_set:Nx \l_my_tabular_tl { \g_kr_tmpd_tl }
\use:x
{
\tablea[#1]{ \l_my_tabular_tl }
}
}
\NewDocumentCommand\tablea { O{Q[c]X[-1]} m } {
\begin{tblr}
{
width = {0.8\textwidth},
colspec = { #1 },
hlines,
vlines,
measure = vbox,
row{1} = {font=\bfseries, bg=brown9},
}
#2
\end{tblr}
}
\ExplSyntaxOff
\newcommand{\comma}{,}
\newcommand{\SignalA}{1}
\newcommand{\signalaph}{}
\newcommand{\checkSignalA}{\ifnum\SignalA=1 \renewcommand{\signalaph}{\comma Type A; Bla bla AAAA}\else\renewcommand{\signalaph}{}\fi}
\newcommand\loadsignaltable{\tableload{%
Function config. ; Description
, Not Used ; The \SignalName\ will not be used in this application
,x;y
,abc;def
\signalaph
}
}
\begin{document}
bla bla bla
\checkSignalA
\loadsignaltable
SignalA on.
\myTable[rr]
abc
\bigskip
\renewcommand{\SignalA}{0}
\checkSignalA
\loadsignaltable
Repeat: same contents; different colspec. SignalA off.
\myTable
ooo
\bigskip
Different contents; different colspec.
\tableload{%
Gnus;Gnats;Letter
,Legs-4;Legs-6;A
,Tail-1;Tail-0;B
,Hide-leather;Hide-exoskeleton;C
,Joints-internal;Joints-external;D
,Albedo-dull;Albedo-bright;E
}
\myTable[Q[l]Q[l]Q[c,blue!8]]
xyz
zse
xdr
cft
\end{document}
答案3
感谢@samcarter_is_at_topanswers.xyz，我找到了解决方案。
也感谢所有评论和提出的解决方案。
我创建了一个包含表格内容的临时文件，然后使用 tabularray 函数将文件内容作为表格数据包含在内。结果如下：
\documentclass[
10pt,
paper=a4,
twoside=false,
openany,
]{scrbook}
\usepackage{tabularray}
\newcommand{\SignalName}{My name}
\newcommand{\SignalA}{1}
\newcommand{\SignalB}{1}
\newcommand{\SignalC}{1}
\newcommand{\SignalD}{1}
\newcommand{\TableFunctionConf}
{
\begin{tblr}[evaluate=\fileInput]
{
colspec = cX,
hlines,
vlines,
width = {0.8\textwidth},
measure = vbox,
row{1} = {font=\bfseries, bg=brown9}
}
Function config. & Description \\
Not Used & The \SignalName\ will not be used in this application \\
\fileInput{buffer.tmp}
\end{tblr}
}
\begin{document}
bla bla bla
\newwrite\tempfile
\immediate\openout\tempfile=buffer.tmp
\ifnum\SignalA = 1 {\immediate\write\tempfile{Type A & Bla bla AAAA \unexpanded{\\}}} \fi
\ifnum\SignalB = 1 {\immediate\write\tempfile{Type B & Bla bla BBBB \unexpanded{\\}}} \fi
\ifnum\SignalC = 1 {\immediate\write\tempfile{Type C & Bla bla CCCC \unexpanded{\\}}} \fi
\ifnum\SignalD = 1 {\immediate\write\tempfile{Type D & Bla bla DDDD \unexpanded{\\}}} \fi
\immediate\closeout\tempfile
\TableFunctionConf
\end{document}