Questions tagged [parsing]
Use this tag for code that parses its input, or that is source for a parser generator such as yacc or lex.
97
questions with no upvoted or accepted answers
11
votes
0
answers
2k
views
Function to conect to Firebase Rest API via Access VBA
This is the application for small school, which will store students' info in Firebase and also retrieve data from Firebase. I am using JSON Parser to parse the data and save the same in Access tables.
...
- 249
6
votes
0
answers
452
views
Parsing indented text into a tree structure in C#
My goal is to take an input stream (text file), and then parse it into a tree node based on each line's indentation.
My rules are
Lines can be indented using either tabs or spaces, but the file must ...
- 161
6
votes
0
answers
194
views
Character-based transitions (part of a lexer)
As part of my prep for the Code Review community-challenge (which looks like it will be Write your own programming language), I've been working on an LL(1) lexer generator in Rust.
Yes, lexer ...
- 1,954
6
votes
0
answers
848
views
Parsing Lua 5.2 strings with patterns
I wrote some code to parse Lua 5.2 strings in Lua 5.1, using patterns. It works perfectly as far as I tested.
...
- 181
5
votes
0
answers
86
views
Menu Parser in C
This is a simple program that parses a menu specification and creates a menu tree.
Why?
I want to create a menu application, where the user can select an entry in the menu, and either a submenu can ...
- 171
5
votes
0
answers
134
views
5
votes
0
answers
92
views
Parsing Long Excel Report Files for Predefined Results
I work as an IT intern in a multinational and I was given a tedious task of combing through a 2500+ long multi-column excel report file in search of inactive servers.
Here's a sample row from that ...
- 1,348
5
votes
0
answers
198
views
Error Handling for XML parser
I have the following Ruby code, which parses an XML document sax style (it's a very simplified version):
...
- 227
5
votes
0
answers
153
views
Expressing Rebol Dates in BNF
I'm looking to define the Rebol date format in BNF notation (as adapted for Rebol Parse). I'd like as best as possible to only define valid dates—at least those that are valid in Rebol at the moment:
...
- 489
4
votes
0
answers
168
views
constraint solving graduation using HTML Parsing, pandas, and z3
not sure if this project fits on code review, but my code is getting extremely messy, and would love some tips to clean it up!
Overview
The project is designed to take in an HTML file (a degree audit),...
- 169
4
votes
0
answers
50
views
formatting flattened string into JSON-like object in C++, part 2
I have reworked the code from my previous (linked) post.
For reference:
I have a string which contains JSON-like object flattened (stringify()ed).
I need to JSON-...
- 789
4
votes
0
answers
447
views
Wrapping argparse to use configuration file
I want to be able to both provide options through command line and from a configuration file. A single option could be served either by the user or by the configuration. But if is provided by both, ...
- 181
4
votes
0
answers
52
views
Parsing λ-terms using a very simple grammar
This is my first Rust program. It parses a string into a λ-term using a very simple grammar.
Please evaluate style and use of ownerships / borrowing.
...
- 1,101
4
votes
0
answers
45
views
Parsing root-level elements out of HTML fragment file
I have the following code written in NodeJS, using the parse5 library. It's purpose is to parse out the root-level elements in a file containing HTML fragments (Vue ...
- 161
4
votes
0
answers
195
views
Python - lookahead driver for a parsing chain
This is retroactive followup (that is, logically this is a followup, chronologically it isn't) to this question: link.
I'm writing a parser combinator library in Python. An important thing that must ...
- 459
4
votes
0
answers
202
views
File operations using Groovy
The idea is to read a file - "data" - and write the information to a new file - "output" - only if it meets the criteria (if the resource usage is more than a configured threshold).
Content of the ...
- 685
4
votes
0
answers
310
views
Parsing BibTeX in JavaScript
I have a project for which I need to parse BibTeX strings. In v0.2.9 and before, I used Regex, and I want to change that. I set up a while loop system that reads ...
- 141
4
votes
0
answers
447
views
Crawling and parsing meteorological data from the web into R
I am interested in collecting directly into R data published by the Mexican Met-office. The data pieces are spread through several URLs, but one can start here. There I can get the names and ...
- 41
4
votes
0
answers
741
views
Parsing an infix notation expression and converting to reverse polish notation
I'm pretty new to Go, and I do not know the best or idiomatic ways to do most of the stuff, so I'd appreciate feedback on how to make my code better, faster or more idiomatic.
My program is a set of ...
- 141
4
votes
0
answers
191
views
Reading Intervals from command line
I want to parse a command line using boost.program_options. Most of my command line arguments will be intervals, which I could implement as something like ...
- 507
3
votes
0
answers
106
views
Mini Scheme interpreter
Right now, I'm working on an interpreter for a subset of the Scheme programming language. It supports lambdas, let/let*/letrec, procedures, combinations, ...
3
votes
0
answers
74
views
Advent of Code 2021: day 10- Syntax Scoring
The following code solves day 10 in the advent of code challenge.
The goal for this time around is evaluating whether a line of brackets
is complete, has a syntax error or is missing some closing ...
- 5,705
3
votes
0
answers
75
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 ...
- 3,014
3
votes
0
answers
265
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" ...
- 409
3
votes
0
answers
71
views
Simple single css node parser written in rust
I am new to rust and I wrote a little program that takes a part CSS selector and returns the name of the element and two vectors containing its attributes (classes, ids)
Example
div#menu.big.pink =&...
- 131
3
votes
0
answers
456
views
Reading and parsing binary file from CAEN Digitizer (written by WaveDump)
Preliminaries
I have CAEN Digitizer N6720A and use WaveDump software for the data acquisition and recording.
As a result of data recording this software produces a binary file in which the sequence ...
- 781
3
votes
0
answers
1k
views
Extract the IP address from the output of ipconfig when connected to multiple wireless networks
I am trying to extract the ip address of my machine when connected to multiple wireless networks. The motivation here is then I can make a socket connection on that ip when I have two networks that ...
- 167
3
votes
0
answers
294
views
Parsing version from Cargo.toml
I want to get version from Cargo.toml and use the value inside my app. Here is a function I wrote:
...
- 437
3
votes
0
answers
100
views
Simple General Purpose Parser Implementation
This is an implementation of a general Purpose Parser/Matcher that can operate on any input stream of objects and will return all possible combinations.
In this case I do not value performance that ...
- 413
3
votes
0
answers
452
views
Converting English words to numbers in Haskell
A few weeks ago, I finished a number to word converter and received an excellent review. It caused me to make several fundamental changes to numToWord, such as ...
- 819
3
votes
0
answers
56
views
Multiple parsers for keywords in strings
I'm writing some code that parses strings, often using simple keywords. On parsing, the code performs various actions, such a printing a response, running functions etc. and it keeps track of whether ...
- 201
3
votes
0
answers
712
views
Parsing simple log files in Julia vs Python
I wrote a log parser in Python and Julia. The Python version takes about 8 seconds to process 350 files, while the Julia version takes about 8 seconds to compile, after which it takes over 20 seconds ...
- 535
3
votes
0
answers
52
views
Sorting upcoming events listed in JSON
I've written my first program in GO, a command line tool that parses JSON containing events from a file or from STDIN and outputs the upcoming events in sorted order. Please critique it!
...
- 31
3
votes
0
answers
321
views
Converting a sentence string to a number in Scheme
I wrote a scheme procedure that converts strings such as "Two hundred and fifty" into a number like "250" that I can use in math calculations (It's for some Natural Language Processing project).
Is ...
- 185
3
votes
0
answers
94
views
Parser for an bifurcation analysis tool
So during my thesis I used xppaut quite extensively. In the end there were some minor problems and I decided to have a look at the code, which was just released at github.
So after 30 years of on and ...
- 4,231
3
votes
0
answers
302
views
Console command parser for my custom Libgdx console (gamedev)
For a game I'm writing using LibGDX framework and Kotlin language, I've decided to make a dev console. This is a WIP line parser. Since there's already a decent amount of code written I've decided to ...
- 489
3
votes
0
answers
200
views
PEG parser generator
I wrote a Python PEG parser generator that takes a grammar as a string, and returns a parser. The parser can parse its own syntax, and is feature complete with the original PEG paper, with some ...
- 391
3
votes
0
answers
913
views
Expression parser using Shunting-yard algorithm
I've been working on a expression parser which will be part of another project (some sort of DSL). This parser basically uses the Shunting-yard algorithm, except for the case of parenthesis: here it ...
- 143
3
votes
0
answers
5k
views
Calculator in Node.JS
I'm new to parsing, and there's only one way to learn anything, and that's to do it yourself. So I did. I wrote what is essentially a calculator. But instead you will send it a string and it will be ...
- 193
3
votes
0
answers
409
views
Haskell s-expression parser and quasiquoter
There are a number of questions on this site about s-expression parsing: e.g., Calculator parsing S-expressions and Code from "Write Yourself a Scheme in 48 Hours" tutorial.
However, these ...
- 1,169
3
votes
0
answers
107
views
Generation and parsing of English numerals (cardinal and ordinal)
I need to use the English numerals (American) in Haskell, so I looked for a library that did it. I have not found one, therefore I developed the program that I am presenting here. There are actually ...
- 273
3
votes
0
answers
65
views
URL fetcher and parser for XML feeds
Here is a program that will parse and print XML feed URLs. I want to reuse most of it to add post date to each link. This adds a new concern of CLI and output formatting on top of parsing and (poor) ...
- 291
3
votes
1
answer
698
views
Parser Composition - a parser directive for Boost Spirit X3
While exploring Boost Spirit X3 (documentation), I noticed that I couldn't find a parser directive that composed parsers. I dug through the source code to see how the existing directives were made, ...
- 3,285
2
votes
0
answers
159
views
Pillow plugin adding support for the QOI image format
Pillow is a popular library for handling images in Python. My code adds support for the QOI image format to Pillow.
Aside from loading and saving QOI images, my goal was to write a streaming decoder ...
- 3,004
2
votes
0
answers
145
views
How can I simplify my nom parser?
I'd like a recommendation on how I can improve the function unquoted_string below - specifically is there a better way to combine the parsers I have to achieve the ...
- 233
2
votes
0
answers
20
views
Prototype of a scanner/tokenizer for Bitmap Distribution Format parser
Instead of the obvious decision, parsing using given std::io::Lines/std::io::Bytes or crates like nom, I decided to explore ...
- 21
2
votes
0
answers
27
views
Experimental parser based on a Tree of (String, Set a)
The parser function is immutable and is completely based on the forest of strings with associated properties (String,Set a).
Changing the forest changes the behavior of the parser.
The use of Data....
- 273
2
votes
0
answers
247
views
Parsing a Graph To Convert It Into Adjacency Lists And CSR And Then Make Connection Queries Using Bidirectional BFS
I was assigned an university project where I had to parse directed graph files coming from SNAP and then convert them into CSR (Compressed Sparse Row) format. Then the client must have the ability to ...
- 165
2
votes
0
answers
50
views
Ensuring a valid JavaScript string in security-critical application
I'm writing an application where users can write custom expressions which are then converted to JavaScript functions and executed. The expressions are used for filtering and sorting data from a ...
- 286
2
votes
0
answers
42
views
Command String Parser
I'm working on a library that, in essence, splits a string at whitespace, with extra rules:
Consecutive whitespace is collapsed, and trimmed at the start and end.
Whitespace wrapped in quotes is not ...
- 165