Shiva

Shiva library: Implementation in Rust of a parser and generator for documents of any type

Features

• Common Document Model (CDM) for all document types
• Parsers produce CDM
• Generators consume CDM

Supported document types

Document type	Parse	Generate
Plain text	+	+
Markdown	+	+
HTML	+	+
PDF	+	+
JSON	+	+
XML	-	-
DOC	-	-
XLS	-	-

Parse document features

Document type	Header	Paragraph	List	Table	Image	Hyperlink	PageHeader	PageFooter
Plain text	-	+	-	-	-	-	-	-
Markdown	+	+	+	+	+	+	-	-
HTML	+	+	+	+	+	+	-	-
PDF	-	+	+	-	-	-	-	-
JSON	+	+	+	+	-	+	+	+

Generate document features

Document type	Header	Paragraph	List	Table	Image	Hyperlink	PageHeader	PageFooter
Plain text	+	+	+	+	-	+	+	+
Markdown	+	+	+	+	+	+	+	+
HTML	+	+	+	+	+	+	-	-
PDF	+	+	+	+	-	+	+	+
JSON	+	+	+	+	-	+	+	+

Usage Shiva library

Cargo.toml

[dependencies]
shiva = {  version = "0.3.1", features = ["html", "markdown", "text", "pdf", "json"] }

main.rs

fn main() {
    let input_vec = std::fs::read("input.html").unwrap();
    let input_bytes = bytes::Bytes::from(input_vec);
    let document = shiva::html::Transformer::parse(&input_bytes, &HashMap::new()).unwrap();
    let output_bytes = shiva::markdown::Transformer::generate(&document, &HashMap::new()).unwrap();
    std::fs::write("out.md", output_bytes).unwrap();
}

Shiva CLI

Install Rust for Linux/MacOS

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Install Rust for Windows

https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-msvc/rustup-init.exe

Build executable Shiva

gti clone https://github.com/igumnoff/shiva.git
cd shiva/cli
cargo build --release

Run executable shiva

cd ./target/release/
./shiva --input-format=markdown --output-format=html --input-file=README.md --output-file=README.html

Who uses Shiva

• Metatron library: Implementation in Rust of a report generation