Questions tagged [parsing]
{parsing} is the process of analysing a string of symbols, either in natural or computer language.
195
questions
0
votes
1
answer
37
views
How to recreate this CYK parse table
I would like to use something that looks like the following table in my document, but I have no idea of how to make this using TikZ or other packages. Using a matrix leaves too much empty space above ...
- 89
0
votes
1
answer
61
views
My wheel chart displays fine but I have an error in the logs
I am trying to create a wheel chart and it displays almost fine but i still have an error:
Package tikz Error: Cannot parse this coordinate.
main.tex, 32 See the tikz package documentation for ...
- 21
0
votes
0
answers
38
views
Parse Subscripts and Superscripts in Nested Macros
How can I parse subscripts and superscripts in nested macros?
I am trying to write two macros based on this answer:
underlinemacro: underline the input argument excluding subscripts and superscripts.
...
3
votes
4
answers
63
views
Parsed word segment in second function can not be compared to string in latex?
I would like to parse words by removing always the last segment ("1. Book1 p3" becomes "1. Book1" or "Book2 p4" becomes "Book2"). This I achieved with the ...
- 31
0
votes
1
answer
46
views
Language question: with \x defined as <X>, why using command \x is not the same as using <X>
This is intended more as a LaTeX language question than a "how do I accomplish XYZ" question.
In the code below, a usage of VerbatimOut is successful.
Place that usage inside a \newcommand* ...
- 107
3
votes
2
answers
87
views
How to make plain text be understood as a macro?
I'd like to create an environment, which will have its own parsing rules inside, for example:
\begin{foo}
a := 42;
c := a;
\end{foo}
Would be understood as:
a \mapsto 42 \\[2pt] c \mapsto a \\[2pt]
...
- 11.2k
1
vote
2
answers
39
views
Using string to process a macro name using listofitems seems to fail
I am trying to process the name of a command using listofitems, but when I am using \string to convert that command it does not behave the way I think it would behave.
Here is a code to illustrate:
\...
- 4,527
0
votes
0
answers
19
views
Macro/variable numerical operations with values read from other files
I'm using Overleaf currently to work on some .tex documents and figured out there were some long-term improvements I could make for the project with macros.
I personally want to make a macro that ...
- 1
7
votes
5
answers
326
views
Does a package exist for programmatically (incrementally) constructing a macro?
When using LaTeX, I often find myself desiring a way to programmatically construct a macro using a series of instructions rather than in the usual "template" sense.
By "programmatically&...
- 361
2
votes
0
answers
79
views
Detect \end of an environment
I'm trying to create a macro that grabs everything till the end of the current environment and parses it. At first, I just want to put ! right after my macro and another one ! before the end of ...
- 4,076
1
vote
1
answer
84
views
How to parse an itemized list the way moodle.sty does
A simple moodle.sty database contains code like that:
\begin{multi}{Name of the question}
Text of the question
\item first answer
\item secon answer
\item* the starred is the ...
- 691
2
votes
2
answers
133
views
How to gobble a character, if present
I would like to do the folloging:
Given a (complicated) string/macro \String, if it starts with * I just remove it, otherwise I do nothing.
So far I tryed
\def\gobbleast *{}%
then \gobbleast \String ...
- 691
0
votes
0
answers
305
views
Is there a way to extract math from a pdf in LaTeX format using SESHAT?
So I've been tasked with using SESHAT to extract the math problems from a large pdf into latex format, but seshat requires an InkML or SCGink file type as it's input. Is there a way I can convert pdf ...
2
votes
1
answer
129
views
Parse subscript and superscript in command
I am using quite a lot of notation in my text.
Thus, I decided to write some commands such as:
\newcommand{\struct}[1]{\mathsf{#1}}
The typical use is as follows:
Let $(\struct{A}_n)$ be a sequence ...
- 125
0
votes
0
answers
86
views
Coloring numbers outside string and variables using lstlisting and parsing don't work as expected. Need Help to fix with PDFLaTeX
I am writing my thesis and i need to put extract of code into it. Having developed all my C# code in Visual Studio, I would like to have more or less the same colors, so I have taken different ...
7
votes
3
answers
238
views
Are there any LaTeX commands (including in packages) where the argument will be in math/text mode based on context?
As I work on the parser for finl, I'm contemplating how I'm dealing with command parameters and wondering if my current setup is sufficient.
Right now, a parameter has a type which would either be ...
- 13.5k
3
votes
2
answers
192
views
Parse list of tuples
I want to pass a list/sequence of "tuples" to a macro, like this:
\foo {
(value11 value12 value13)
(value21 value22 value23)
(value31 value32 value33)
(value41 value42 ...
- 830
1
vote
2
answers
163
views
Gobble the next char if it is whitespace or tilde
I want this macro to gobble the next character in the input stream only if it is whitespace (according to the char code) or it's the tilde character (i.e., a non-breaking space).
My current attempt to ...
- 830
4
votes
3
answers
103
views
How to absorb the content of the page into a variable?
This is what I'm trying to do:
\documentclass{article}
\begin{document}
\start
Hello, world!
\stop
\print % here!
\end{document}
I'm expecting Hello, world! to be printed twice. The second time by ...
- 11.2k
6
votes
3
answers
308
views
Split string into part by char position
Explanations
I format a moroccan RIB (Relevé d’identité bancaire for “Bank account number”) to display it as a nice rendering. I need to take each part of the RIB to embrace it with a specific label.
...
- 2,233
1
vote
1
answer
57
views
Macro delimited lists
Floats use macro delimited lists like \@freelist. Source2e shows them using macros like \@next and \@cons without showing the definitions. The idea of having self parsing lists is intriguing and ...
- 75.3k
1
vote
2
answers
130
views
Automatically composing documents from multiple text files which are not LaTeX formatted?
I'm looking for a way to create a songbook out of individual song files.
Each song file is a self-contained block of text data consisting of:
Song name
Song author
Some details (optional)
Lyrics with ...
- 111
9
votes
4
answers
505
views
LaTeX3 - Parsing an argument to apply specific macros
In the following code, I would like to parse the argument of \parseanduse such as to "achieve" the examples shown.
Each time a o is met, the following integer should be used to call the ...
- 12.9k
1
vote
1
answer
145
views
ConTeXt: Typeset XML attribute containing newlines
Background
A user can provide their address information in a text area, separating lines by pressing Enter. An XML document is generated, which replaces the new line character with \n, such as in the ...
- 11.3k
1
vote
1
answer
268
views
Parsing optional argument from \newenvironment to \newmdenv
I'd like to parse an optional variable from a custom \newenvironment{example} to an mdframed environment \mytextbox nested in the example environment.
What I'd like to achieve is something like
...
- 11
5
votes
1
answer
214
views
Parsing a mix of plain text and commands
I am trying to implement a command that parses some expression that can be a mix of plain text, commands with their (any number of) arguments, or even -- if I understood that correctly -- unexpandable ...
- 53
9
votes
2
answers
300
views
LaTeX3: Elegant way to forward-reference a counter with a "future" value
I'd like to do, pseudo-code, the following:
\begin{pointtracker}{Advanced Geology}
\begin{itemize}
\item Count the fingers on your left hand. Are there more than 9? \addpoints{1}
\item Draw ...
- 397
1
vote
1
answer
51
views
lstlisting: Unexpected newline/missing background color after trailing space in escape section
I'll start with a minimum failing example:
\documentclass{article}
\usepackage{listings}
\usepackage{color}
\lstdefinelanguage{x}{
escapechar={!}
}
\lstset{language=x,
breaklines=true,
...
- 285
1
vote
1
answer
797
views
Parsing issues with resume written in LaTeX [closed]
I've written my resume in Overleaf and downloaded it as a PDF to submit to job applications.
For some job applications it works but for others I'm told there is a parsing error (i.e. their automated ...
- 111
5
votes
1
answer
224
views
Automatic text highlighting based on a dictionary
I would like to automatically highlight parts of a running text, based on whether the word is in a predefined dictionary, or not. Something along the lines of...
\documentclass{article}
\mydictionary{...
- 936
0
votes
2
answers
82
views
Weird 'ProvidesPackage' vs 'newenvironment' macro expansion
currently improving an existing package ('ditaa', based on ditaa0_9.jar) to add support for svg (implemented in ditaa-0.11.0-standalone.jar) yet I'm facing strange macro definition/expansion.
...
- 155
14
votes
1
answer
7k
views
is there a python module for parsing LaTeX?
I am looking to write python programs that modify LaTeX source files. To do this I would like to have a basic parser in python that can reliably read and write LaTeX files while maintaining the tree. ...
- 4,660
1
vote
0
answers
94
views
Macro to change the extension of filename
I would like to have a macro to change the extension of a file name. For example, my macro needs to take an argument like Figures/Fig.xxx and return me Figures/Fig0.yyy.
I found a solution in Extract ...
- 81
3
votes
2
answers
188
views
Convert \input to number
I'm reading several txt-files from disk and I want to do some simple calculations on them and be able to print them on the page.
Basically I have:
\newcommand\getinput[2]{
\immediate\write18{do-...
- 157
6
votes
4
answers
492
views
What LaTeX macros cannot accept a group as an argument?
I am working on a LaTeX pretty printer that parses a LaTeX document and then re-renders the source. (I know that this is not possible in all cases, but it should be possible a lot of the time.)
In ...
- 661
0
votes
0
answers
33
views
Automatically elaborate an external table's data
I have to create a serie of sheets with LaTeX using informations from a LibreOffice table (but I can convert it in other formats if needed). The problem is, the table is some hundreds rows long, so it ...
- 611
6
votes
1
answer
408
views
Why does LaTeX parse square brackets differently than curly braces?
In this comment (copied below without effort to preserve formatting):
It may be worth pointing out why this happens. The [ and ] bracketing of optional arguments in LaTeX isn't as robust as the { .....
- 303
3
votes
1
answer
394
views
How to escape "and" as list delimiter in bibtex/biblatex?
In my BibLaTeX manual, it says:
Literal lists are parsed and split up into the individual items at the and delimiter
but not dissected further. Literal lists may be truncated in the bib file with
...
- 16.9k
3
votes
3
answers
268
views
Parse sentence and split into parts
I would like to generate titles for my documents that look like this:
\documentclass{article}
\usepackage{tikz}
\begin{document}
\noindent \colorbox{red}{\expandafter\MakeUppercase\expandafter{\Huge ...
- 376
3
votes
2
answers
323
views
In LaTeX3, what is the best data type for storing, parsing and outputting free user input?
I'm working on a mini-parser that takes free user input and interprets certain inputs as commands. For example, the parser interprets + as \oplus or [ as "start a pre-configured array with the bracket ...
- 865
0
votes
1
answer
134
views
Combining texmate header and xskak notation
I tried to alter the PGN2LaTeX3 in that manner that it should create headers in my book, however I failed to do it.
for example, some pgn2latex_out.tex result:
\newgame
\resetPgnTags
\def\Site{}
\...
0
votes
0
answers
41
views
Output position in sourcefile of a macro expansion
Suppose I have a custom macro defined with \newcommand (no fancy parsing going on).
For simplicity assume
\newcommand{\mymacro}[1]{#1}
Is there a way to redefine the macro so that, every time the ...
- 14.9k
3
votes
1
answer
77
views
Build a shortcut for string to be used as an argument later
I need to pass the result of a macro as a string to another macro (I'm using xparse). Here is a minimum working example:
\documentclass{minimal}
\usepackage{xparse}
\NewDocumentCommand{\...
- 159
27
votes
3
answers
1k
views
Unbalanced dollar signs
I'm curious: why do the following two examples behave differently?
Example 1: (Works, displays xyz in displaymath mode.)
\newcommand\weird{$$xyz$}
\weird$
Example 2: (Error, missing $ inserted.)
\...
- 477
2
votes
1
answer
96
views
Parse standard balanced group within verbatim context
Say I want to write a custom parser which reads characters in a verbatim context, where the parser argument should be split into several kinds of tokens:
Ordinary characters, i.e. all characters ...
- 13.2k
2
votes
2
answers
181
views
Automatically remove \ifthenelse
Let's assume that you have a single LaTeX source file that can compile two arts of documents: a main conference paper and its extended long version. Inside, you use \ifthenese to produce the two ...
user165772
0
votes
0
answers
226
views
Parse all equations in eps file
When I draw figures with a vector graphic program I can
export them as .eps files.
I know it is possible to use psfrag to replace given text
in the eps file with another text which is then parsed in ...
- 101
2
votes
1
answer
104
views
Efficiency of xstring (2e) vs. xparse (l3) in simple parsing
I understand string processing can be done on either LaTeX2e using xstring and expl3 using xparse (originally based on the 2013 thread "Tokenizing and parsing") I will be running a relatively simple ...
- 61
5
votes
1
answer
335
views
Nested maths mode - Latex parsing
I needed a tiny bullet and found this solution :
$\vcenter{\hbox{\tiny$\bullet$}}$
Howover, I don't understand how latex interpret / parse this formula.
\vcenter is math mode
\hbox and \tiny are ...
- 440
10
votes
1
answer
315
views
How do I define a new TeX register with arguments in LuaTeX?
Some time ago I tried to implement the \pdfadjustinterwordglue from pdfTeX in LuaTeX using a callback. Getting the callback to work is pretty simple, but there is another major problem in the way ...
- 108k