Questions tagged [parsing]
Parsing is the process of analysing a string of symbols, either in natural language or in computer languages, conforming to the rules of a formal grammar.
1,261
questions
5
votes
5answers
199 views
Extracting a part of a URL path
I have a string like the one below from which I am extracting the tariff name.
...
3
votes
4answers
252 views
Convert number 1-5 from its spelt-out form
I'm working with an API that for some strange reason returns star ratings as words, like FIVE,FOUR,THREE,TWO,ONE. As far as I can see, there's no way to just get ...
1
vote
1answer
77 views
Python Fasta Parser using dictionaries without using BioPython or other external libraries
I am writing my own parser for fasta format. I can't use Biopython or anything else, because it's a part of an assigment and our teacher wants us to try to do it manually.
For now, I have done this:
<...
3
votes
3answers
406 views
Find the average score, given data in a table with labeled columns not in a fixed order
I was on Hacker Rank for the first time and there was a question that required to get the inputs from STDIN and use collections.namedtuple(). It was my first time ...
1
vote
1answer
77 views
Parsing data from different file formats
While setting up applications to communicate between various different trade partners and our WMS software I often have to parse very similar information from various different file formats. In this ...
4
votes
2answers
189 views
i3 config file parser
So I am using i3 an Linux window manager to manage my windows. In addition this is run on a laptop that is frequently mounted to several output-displays. This is handled by the following lines in my ...
3
votes
1answer
24 views
Bash argument parser with support for concatenated flags and '=' or ' ' between arguments and values
This is my best attempt so far at a bash script argument parser written without GNU getopt or bash getopts
the first two ...
1
vote
1answer
67 views
using pandas and numpy to parse dirty .csv
I'm relatively new to Python have been writing for a few months now. I've started a Pandas Numpy project that starts with parsing large and somewhat sloppy formatted textfile, its not exactly csv but ...
3
votes
0answers
64 views
Python program that analyzes a corpus for randomword generation
I play a lot of old-school western CRPGs, and most of them (if not all) require the player to generate an avatar at the start of a new game, including naming the character (with names that will never ...
3
votes
3answers
92 views
PHP fetch an automated email, parse text for specific data, store, send summary
I'm new here. I recently found myself in charge of a large PHP-based system. The guy that wrote it produced some of the worst code I've ever seen. I've never been in charge and have had the luxury of ...
2
votes
3answers
107 views
Optimize lexer/parser bottleneck in C++
I am writing a parser for a custom mesh format for fluid dynamics simulation library, the mesh file contains 3D points (vertices) for the simulation mesh, for example:
...
1
vote
2answers
157 views
Parsing words from string
I am learning Java, so I am beginner. I know I can do this with split function but I want to improve my algorithm knowledge.
I will be glad if you help me. Thanks.
inputStr variable is contains the ...
2
votes
0answers
33 views
How could this indentation-based lexer be simplified?
I finally got this lexer working. How can the parse function be simplified? The goal is to take a tree of indentation-based text, and convert it into parentheses-...
4
votes
1answer
76 views
Small combinator parsing library in Haskell
I recently wrote code to parse lambda expressions written in a lisp like format, using a small hand-rolled parsing library.
The goal
This code was written as a part of this code-golf challenge not as ...
1
vote
2answers
79 views
Function to skip characters
A very simple function that can be used such that it returns a pointer to the first character on which func returned 0. However, ...
4
votes
1answer
50 views
Preprocessing invalid xml before feeding it to a parser
As part of a larger project I'm writing to learn C++, I'm trying to read through some almost-XML files generated by another program. Unfortunately this program uses its own custom escaping logic, so ...
1
vote
0answers
70 views
Yet another .ini parser for AutoHotKey
I decided to learn a little about AutoHotKey, to practice a little and learn about classes.
I ended up writting a basic ini file parser.
...
1
vote
2answers
57 views
Extracting items from comma/semicolon-delimited strings, discarding parts after a hyphen
New Scala dev here. Is there a more idiomatic or efficient way to accomplish this in Scala?
Given a list of the following strings, I need to obtain the unique 'main parts' once any parts including ...
6
votes
1answer
277 views
Parsing input and output currency names
The input for price() would be STRINGS, as you see below. If the string starts with "-" I would like what follows to be stored in fiat_name and then retrieve the symbol from ...
1
vote
1answer
40 views
Suggestions on making this parsing/unparsing format more human-friendly
I am working on some application which involves regular expressions with counting. Also, these regular expressions are not necessarily over some fixed alphabet, but over some class of predicates over ...
4
votes
1answer
68 views
Convert ASCII representations of phonetics to Unicode characters
Here is some working code for converting an input string to an output string:
...
0
votes
0answers
21 views
User input, floats, ints and ranges
Intro
So I am writing a larger script where a part of it is checking user input. Maybe I have a menu where the user can choose different options, or maybe I want them to write in some number/s. After ...
5
votes
2answers
121 views
C key: value file parser
I implemented a key:value format file parser in C, or something that comes close to it as there is no such thing as dynamically creating structs in C.
Assumptions: we are creating a C program that ...
3
votes
3answers
69 views
C string parser criticism
I have written a program to parse a string depending on the string the user provides.
Any advise/criticism is appreciated.
...
7
votes
1answer
368 views
Count characters, words, and lines in files (wc in rust)
I wrote a barebones version of wc in rust. wc is a program that counts the number of characters, words, and lines in a file and ...
25
votes
4answers
4k views
Poor man's JIT using nested lambdas
While answering this code review question, I came up with a way to convert an equation given at runtime to a std::function<double(double)> that would evaluate ...
3
votes
0answers
65 views
Lisp expression parser
I'm building a very simple Lisp interpreter. Similar to the the one from here. Here is what I have so far for the parsing part, that is, everything from "text is passed to the the program" ...
2
votes
1answer
99 views
Parsing glider data from IGC files
I have to do a program in PHP that reads IGC files like this IGC file and gets records about the glider.
For now I came up with something like this:
...
3
votes
2answers
1k views
6
votes
1answer
189 views
Calculator in C - Parsing arithmetic expression using the shunting-yard algorithm
This is a simple arithmetic calculator, which parses mathematical expressions specified in infix notation using the shunting-yard algorithm. This is one of my personal projects and I would love to ...
0
votes
0answers
90 views
Asynchronous web scraping
This is my solution to a "vacancy test" task.
I'm not sure at all if I have correctly implemented the task, but here is my solution.
Goals of code:
Parse rows of table from a URL and ...
3
votes
1answer
44 views
Text replacement with Räubersprache ("Røversprog")
I've been toying with Haskell again and implementing a simple text replacement program that replaces all consonants c in a text by coc, i.e., inserting an 'o' in between:
...
3
votes
2answers
544 views
Separate an email address into its username and domain name
This is my first ever Python program and I wanted to get everyone's opinions on it. The goal of the program is to separate an email address into its username and domain name.
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3
votes
2answers
130 views
Parse sequence of characters detecting formatting categories
I am a beginner coder and SonarLint tells me code is too complex. I tried recursion, iterators, slicing but had not luck making this code any simpler.
The code will parse the input string to detect ...
8
votes
2answers
186 views
JSON4 parser in Typescript
Context
I may have accidentally gotten a little sidetracked during homeschooling, and wrote a JSON4 parser in Typescript during the down-time. This project started as an idea that I got while ...
1
vote
0answers
54 views
1
vote
1answer
102 views
Company database REPL program in Rust for Chapter 8 of The Book
Using a hash map and vectors, create a text interface to allow a user
to add employee names to a department in a company. For example, “Add
Sally to Engineering” or “Add Amir to Sales.” Then let the ...
0
votes
2answers
84 views
Parse file and make output in custom List [closed]
I have a file output like this and want to do parsing and put the output into a List. The biggest problem here is the name of a wake-lock which appears after ID and runtime, in some cases, it contains ...
2
votes
1answer
66 views
Can this parser (concerning about infinite hierarchy of operators) be implemented purely in ReadPrec?
In Haskell, I tried to implement a parser for expressions containing hyperoperations, and finally succeeded. Valid expressions shall contain:
Parentheses.
Nonnegative integers.
Addition represented ...
2
votes
0answers
103 views
Custom HTML parser in Haskell
For the last couple of months, I have started to learn Haskell and since I am following a course on functional programming soon, I thought I would test my current skills. So what I did was create an ...
10
votes
1answer
1k views
Parsing overly complex JSON
The Merriam-Webster Dictionary API at some point discontinued the use of XML in favor of exclusively returning JSON. This had the unfortunate effect of making finding a definition listed by sense ...
2
votes
1answer
85 views
Parse proxy strings to array of objects
The goal of this module is to take in a string (user input, someone copy and pasting a large list of proxies) and parse it into an array of objects.
I appreciate any and all feedback, but I'm ...
2
votes
2answers
120 views
A postfix (a.k.a. Reverse-Polish Notation - RPN) calculator
As an exercise, I put together a postfix calculator using modern Fortran. Language apart, I am interested in knowing your take on the algorithm. As far as I remember from my freshman year (chemistry - ...
1
vote
1answer
53 views
Advent of Code 2020 - Day 3: tobogganing down a slope
Previous: Advent of Code 2020 - Day 2: validating passwords
Problem statement
I decided to take a shot at Advent of Code 2020 to exercise my Rust knowledge. Here's the task for Day 3:
Day 3: ...
2
votes
1answer
43 views
Terminal Calculator/Parser Inspired by gcalccmd
My program takes input from the user in two ways:
By passing input as an argument whilst calling the command
By taking any number of inputs after calling the command
The program is a terminal ...
3
votes
2answers
209 views
Python: Parse string of bracketed list items into list of strings
I have a string containing several items listed in the following notation:
myString = '[A][B][C]'
And I would like to parse that to a python list of several ...
1
vote
2answers
90 views
Parse Certain C++ Headers and Dynamically Generate Other Headers Containing Boilerplate Code
A link to the pull request in question.
I maintain a C++ DLL / Game Maker library that constructs an environment that allows one to call any game maker script/function from within the C++ dll directly....
6
votes
1answer
461 views
Parsing a JSON one line at a time in Python
happy 2021 everyone!
I started coding some months ago for fun and recently I challenged myself to build a JSON parser in Python (v3.8).
The basic idea was to avoid loading the whole file at once, ...
2
votes
1answer
302 views
Simple Haskell Parser
I'm very new to haskell (I never used Monads, Functors and other things) and FP in general. I decided to write the simplest parser I possibly can with some expansion possibilities. (I have a general ...
3
votes
1answer
103 views
Parsing values from string into struct using match in Julia
My goal
I am parsing from a string which contains token:value pairs into a type.
Example:
...
