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.
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String parsing and saving ipaddress to file in Java
Following function will parse string resp, which will be like shown in following example. I will get an IP address in the form of a hexadecimal string like ...
8
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84 views
Calculator using tokens of numbers and operators
Lately there has been some questions regarding calculators, where the response typically has suggested simplifying the logic and using either abstract syntax tree or token lists (like I did myself in ...
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219 views
Parsing expression with exponents and evaluating
I'm programming a basic command line calculator in java that can parse expressions and evaluate them, does not handle brackets yet.
For example an expression: \$9+9/2^2*5-1\$.
At this point I can ...
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Erlang linter written in Erlang using erl_lint:module
I've just started learning Erlang. Since my editor of choice doesn't have a syntax checker for Erlang, I decided to use the parser/linter in the standard library to make a standalone script. It works ...
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Solution to part 1 of Day 7 Advent of Code in Scala
Does someone want to review my solution to part 1 of Day 7 Advent of Code in Scala?
The assignment is here: http://adventofcode.com/day/7
Without repeating the whole text, in short:
Given a text file ...
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1answer
38 views
jQuery replace text with HTML plugin
I've written a jQuery Plugin which searches text & replaces it with other text or HTML.
Now everything works quite well but recently I came across this SO question where the OP could have use of ...
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2answers
104 views
Lexer for C# source code
This code reads a .cs source file in the \bin folder and parses the C# code in it. The program outputs keywords, identifiers, separators and numerical constants.
How could it be improved?
...
2
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1answer
22 views
Converting fraction notation in strings to a Rational data type
I've been messing around with a RationalInt type, using a simple
int-based structure for the time being. I've created code to ...
9
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1answer
52 views
Tokenize s-expressions in Rust
I'm writing an s-expression tokenizer in Rust.
I have the following code written, but it is not idiomatic Rust - it is quite ugly. TokenizerI is simply an ...
3
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2answers
41 views
Return the first number found greater than the provided input number (13 digits)
This script converts the numbers to be at least 13 characters long (for UNIX_MS strings). For use with timestamps, I'm having issues with it being very slow. I wanted an alternative to grepping for ...
2
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3answers
71 views
File parsing and data management - follow-up
This is part of a two-part post (Part 1).
Here, I have two recent projects that parse a file. The first uses a loop that's kind of hard to follow, and the second uses "modes" to decide what to do.
...
3
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1answer
32 views
File parsing and data management
This is part of a two-part post (Part 2).
Here, I have two recent projects that parse a file. The first uses a loop that's kind of hard to follow, and the second uses "modes" to decide what to do.
...
2
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2answers
94 views
Parsing from one enum to another
I face a problem I think I am not approaching appropiately.
I have two independent enumerators that both will contain the same members, the only difference being the values given.
I have to be able ...
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Port of NLTK tokenizing code from Python to Rust
I'm working on a port of NLTK to Rust.
I am fairly new to Rust, so I wanted to post a small file to check if I was writing idiomatic Rust. I've included the original Python. The Python has docstrings ...
3
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0answers
47 views
Infix to Postfix Formula Parser Java
I've written a program that takes a mathematical formula as an user input and converts it from infix to postfix.
It doesn't support negative numbers.
The program doesn't depend on the user having to ...
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1answer
52 views
C# Parser of strings with list of assignments
I have implemented class which manages communication with measuring device, which sends list of assignments, like variableName=value. These assignments are always ...
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54 views
Parsing JSON with generics
I get back two dictionaries, I need to parse through them and put in an array two objects. I think I did a very poor job and I have a feeling there is a better way to make the code more compact and ...
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29 views
Java XML parsing
I am attempting to create XML forms using user input to populate certain areas that would appear when loaded into a STIG viewer. Right now everything is working enough for me to create this and have ...
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1answer
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Parsing a command line
I've written an object which allows parsing and serializing a command line. I don't in any way consider this done, but this is the beginning of it. I know there are other implementations out there ...
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Compare Two Files
One of the K&R exercises is to write a small piece of software to compare two files and print the first line in which they differ.
Here is my attempt:
...
3
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1answer
42 views
Simple CFG parser in C++
I have written a CFG (text file) parser for my specific needs. I have found other libraries to be much too large. Even other parsers that bill themselves as "simple" run hundreds of line long.
The ...
4
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1answer
39 views
Word Counter Project
I recently read K&R The C Programming Language and wanted to write a small program to count the occurrence of each word in the input (std-input - I piped a file with all shakespeare pieces in ...
4
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2answers
95 views
Read firewall logs
I am still a Python beginner and would appreciate some help with this code.
I am looking through some firewall log files, more specific all lines with Deny in them. For those files I am extracting ...
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1answer
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Parsing an uploaded file, returning record of 10 fields for each line [closed]
I have a program that reads a .txt file from a given directory. Each record line contains a data and I am parsing it. I think this is costly with it comes to performance but I might be wrong. Here is ...
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1answer
58 views
Lazy attoparsec parser for log files
I've written a parser with the help of some experienced Haskellers. The parser is not bad, but the same kind of parser written in PHP7 with regular expressions is much faster (takes 25% of the time ...
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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 ...
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130 views
Using argparse with parameters defined in config file
I understand that and why using eval is generally considered bad practice in most cases (see e.g. here). Related questions on config files and argparse don't use ...
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1answer
70 views
Parse Twine HTML to JSON
For those who don't know, Twine is just a simple interactive fiction making tool. It lets you easily create a series of passages that are hyperlinked to each other, making a choose your own adventure ...
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2answers
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Representing and Parsing an Open or Closed Range
I would like to represent a numeric range in C#. Either open-ended, such as "up to 35" or "100 on up" or closed-ended, such as "34 to 65". I'd like to represent the open end with NULL. Further, I'd ...
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1answer
44 views
Css builder and parser
As part of a larger project I've created recently a simple CssBuilder and CssParser. It's composed of three classes and can ...
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1answer
68 views
Parsing a CSV file in node.js and express.js
I want to import a CSV file and do some operation on it.
The following is the code I'm using and it is working fine:
...
2
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1answer
55 views
Replacing values in a file based on values in another file
I am writing Python code which reads through two text files and prints the output based on those two files. Basically, the first file, demo.txt, has a matrix of numbers and the second file, days.txt, ...
2
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1answer
36 views
JSON C pull parser
Back in the day in addition to DOM and SAX parsers for XML another parser type was relatively popular -- pull parsers. Recently I was looking for a JSON parser and figured that most JSON C parsers are ...
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2answers
63 views
Transforming CSS into an encoded representation
I have a java code that is supposed to format the content of a .css file so that I could use the result to make a enum class.
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1answer
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Map all symbols in module to dictionary
The div and add functions are located randomly in my package structure. I have a function with this signature:
...
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72 views
Parsing an ini file
I have written a basic ini file parser in C. It won't support big ini files, and isn't very fast when fetching configuration values, but should be enough for small ones.
I couldn't find "proper" ...
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1answer
98 views
Converting string to dict using Python ast library
I have been trying to convert a string of dictionary objects as given below
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3answers
67 views
Parsing an ExpandoObject into a typed class using reflection
I've spent some time writing a library to parse JSON into a statically typed object. Am I following most of the standard coding guidelines? Any thoughts on what I could do better, or any edge cases ...
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2answers
113 views
Parsing mathematical expressions in Reverse Polish Notation
I've wanted to make a calculator for a long time now, so I wrote one of my first parsers, where the input is in reverse polish notation, \$1 \ 1 +\$ becomes \$2\$.
It supports to following operators; ...
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3answers
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Implementation of IpV4Address
For legacy reason (guys here LOVE immutable object), I need a struct that contain an IpV4.
I can't use System.Net.IPAddress because it's not a struct.
So far here what I got:
...
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2answers
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Parsing BibTeX files in Java
As part of a larger project to generate a website with a personal list of publications, I implemented a parser for BibTeX files.
The entry point is the parseFile ...
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314 views
Lexer for C- in Python
I am currently taking a compilers course where we are designing a compiler for C- (which is a subset of C). Our first step was the lexer and I have written that but I believe that it is not very ...
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1answer
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Perl parsing code
I've extracted a subroutine from some perl code I've written. (I also included the use enum line for easy reference.) Its purpose is to parse the given code, ...
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2answers
52 views
Process text file of fulltext articles from news publications
I'm relatively new to programming and have started writing some code for work. This script is something I wrote that I'd like to have someone comment on. Am I doing anything silly, stupid or totally ...
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2answers
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Parsing mathmatical functions
I have finally finished a Ruby calculator project, which is not based on eval. Instead it parses input char by char. The project is hosted on GitHub.
However, I find a specific part of the program ...
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2answers
45 views
K&R atoi() variation
I'm currently learning C with The C Programming Language by K&R and this is my current exercise:
Rewrite appropriate programs from earlier chapters and exercises with pointers instead of array ...
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3answers
143 views
Extracting a database name from a file
I am developing a project that converts SQL server file to MySQL file based on some assumptions. I have written a function that takes the string source as input and it extracts the database name. Is ...
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Parsing pipe delimited lines
I am parsing the following line of code via a specific format.
Line is:
S|111111|87654321|Bar UK|BCreace UK|GBP|24/08/2010|
The Format is:
...
