Parsing JSON is a Minefield seriot.ch About > Projects > Parsing JSON is a Minefield [2016-10-26] First version of the article[2016-10-28] Presentation at Soft-Shake Conference, Geneva (slides)[2016-11-01] Article and comments in The Register[2017-11-16] Presentation at Black Alps Security Conference, Yverdon … Read more
tl;dr – Try can_ada if you need to parse URLs in Python. URLs Parsing URLs correctly is surprisingly hard. Who even defines what a “correct” URL is? URLs have evolved drastically since they were originally defined in 1994. The WHATWG … Read more
Updated (2014-10-24): If you find this article interesting, you may be interested in the follow-up article on an editor for composed programs. Parsing is the act of taking a stream of characters and deducing if and how they conform to … Read more
About two years ago I came across a .DS_Store file and wanted to extract its information (e.g. file names). After researching the file format and its security implications, as well as writing a parser for it, I would like to … Read more
{{ message }} This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. You can’t perform that action at this time. You signed in with another tab or window. … Read more
With my growing interest in R it was inevitable that I would end up writing a parser for it. The fact that the language is relatively small (the add-on packages do the serious work) hastened the event because it did … Read more
Many recent Intel processors benefit from a new family of instructions called AVX-512. These instructions operate over wide registers (up to 512 bits) and follow the Single instruction, multiple data (SIMD) paradigm. These new AVX-512 instructions allow you to break some … Read more
I’ve written previously about the problem recursive descent parsers have with expressions, especially when the language has multiple levels of operator precedence. There are several ways to attack this problem. The Wikipedia article on operator-precedence parsers mentions three algorithms: Shunting … Read more
« All posts A parser is a program that usually takes a stream of lexical tokens and transforms them into another data structure, usually in the form of a parse tree that satisfies the language’s grammar rules. Recursive Descent Parser … Read more
Programming languages generally only manipulate bytes (groups of 8 bits). It can be pretty tricky to manipulate single bits. But sometimes you need to — for example, a DNS header has some 4-bit numbers, and encodes some boolean flags into … Read more