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use clap::Parser;
use pisnge::common::parser::{parse_config_and_detect_type, ChartType};
use pisnge::pie_chart::{parse_pie_chart_content, render_pie_chart_svg};
use pisnge::png::svg_to_png;
use pisnge::xychart::{parse_xychart_content, render_xychart_svg};
use std::fs;
use std::path::Path;
#[derive(Parser)]
#[command(name = "pisnge")]
#[command(about = "A Rust-based diagram rendering library inspired by Mermaid.js")]
struct Cli {
#[arg(short, long)]
input: String,
#[arg(short, long)]
output: String,
#[arg(short, long, value_parser = ["png", "svg"])]
format: Option<String>,
#[arg(short, long)]
verbose: bool,
#[arg(short, long, default_value = "800")]
width: u32,
#[arg(short = 'H', long, default_value = "600")]
height: u32,
#[arg(long, default_value = "Liberation Sans")]
font: String,
}
fn detect_format_from_extension(output_path: &str) -> Option<String> {
Path::new(output_path)
.extension()
.and_then(|ext| ext.to_str())
.map(|ext| ext.to_lowercase())
.and_then(|ext| match ext.as_str() {
"png" => Some("png".to_string()),
"svg" => Some("svg".to_string()),
_ => None,
})
}
fn main() {
let cli = Cli::parse();
println!("Pisnge - Diagram Renderer");
// Determine output format: use -f flag if provided, otherwise detect from file extension
let output_format = match cli.format {
Some(format) => format,
None => match detect_format_from_extension(&cli.output) {
Some(format) => format,
None => {
eprintln!("Error: Could not detect output format from file extension '{}'. Please specify format using -f flag.",
Path::new(&cli.output).extension().and_then(|ext| ext.to_str()).unwrap_or("(none)"));
eprintln!("Supported formats: png, svg");
std::process::exit(1);
}
},
};
if cli.verbose {
println!("Input file: {}", cli.input);
println!("Output file: {}", cli.output);
println!("Output format: {}", output_format);
}
match fs::read_to_string(&cli.input) {
Ok(content) => {
// Ensure content ends with newline for easier parsing
let normalized_content = if content.ends_with('\n') {
content
} else {
format!("{}\n", content)
};
// First parse config and detect chart type
match parse_config_and_detect_type(&normalized_content) {
Ok((_, (config, chart_type, remaining_content))) => {
if cli.verbose {
println!("\nDetected chart type: {:?}", chart_type);
if let Some(ref config) = config {
println!("Theme: {}", config.theme);
if !config.theme_variables.is_empty() {
println!("Theme variables: {:?}", config.theme_variables);
}
}
}
match chart_type {
ChartType::Pie => {
match parse_pie_chart_content(remaining_content, config) {
Ok((_, pie_chart)) => {
if cli.verbose {
println!("\nParsed pie chart:");
println!(" Show data: {}", pie_chart.show_data);
if let Some(title) = &pie_chart.title {
println!(" Title: {}", title);
}
println!(" Data entries: {}", pie_chart.data.len());
for entry in &pie_chart.data {
println!(" \"{}\": {}", entry.label, entry.value);
}
}
match output_format.as_str() {
"svg" => {
let (svg_document, _) = render_pie_chart_svg(
&pie_chart, cli.width, cli.height, &cli.font,
);
match fs::write(&cli.output, svg_document.to_string()) {
Ok(_) => println!("SVG saved to: {}", cli.output),
Err(e) => {
eprintln!("Failed to write SVG file: {}", e);
std::process::exit(1);
}
}
}
"png" => {
let (svg_document, actual_height) =
render_pie_chart_svg(
&pie_chart, cli.width, cli.height, &cli.font,
);
match svg_to_png(
&svg_document.to_string(),
cli.width,
actual_height,
&cli.font,
) {
Ok(png_data) => {
match fs::write(&cli.output, png_data) {
Ok(_) => {
println!("PNG saved to: {}", cli.output)
}
Err(e) => {
eprintln!(
"Failed to write PNG file: {}",
e
);
std::process::exit(1);
}
}
}
Err(e) => {
eprintln!(
"Failed to convert SVG to PNG: {}",
e
);
std::process::exit(1);
}
}
}
_ => {
eprintln!(
"Unsupported format: {}. Supported formats: png, svg",
output_format
);
std::process::exit(1);
}
}
}
Err(e) => {
eprintln!("Failed to parse pie chart: {:?}", e);
std::process::exit(1);
}
}
}
ChartType::XY => match parse_xychart_content(remaining_content, config) {
Ok((_, xychart)) => {
if cli.verbose {
println!("\nParsed XY chart:");
if let Some(title) = &xychart.title {
println!(" Title: {}", title);
}
println!(" X-axis labels: {:?}", xychart.x_axis.labels);
println!(
" Y-axis: \"{}\" {} -> {}",
xychart.y_axis.title,
xychart.y_axis.min,
xychart.y_axis.max
);
println!(" Series count: {}", xychart.series.len());
for (i, series) in xychart.series.iter().enumerate() {
println!(
" Series {}: {:?} {:?}",
i, series.series_type, series.data
);
}
}
match output_format.as_str() {
"svg" => {
let (svg_document, _) = render_xychart_svg(
&xychart, cli.width, cli.height, &cli.font,
);
match fs::write(&cli.output, svg_document.to_string()) {
Ok(_) => println!("SVG saved to: {}", cli.output),
Err(e) => {
eprintln!("Failed to write SVG file: {}", e);
std::process::exit(1);
}
}
}
"png" => {
let (svg_document, actual_height) = render_xychart_svg(
&xychart, cli.width, cli.height, &cli.font,
);
match svg_to_png(
&svg_document.to_string(),
cli.width,
actual_height,
&cli.font,
) {
Ok(png_data) => {
match fs::write(&cli.output, png_data) {
Ok(_) => {
println!("PNG saved to: {}", cli.output)
}
Err(e) => {
eprintln!(
"Failed to write PNG file: {}",
e
);
std::process::exit(1);
}
}
}
Err(e) => {
eprintln!("Failed to convert SVG to PNG: {}", e);
std::process::exit(1);
}
}
}
_ => {
eprintln!(
"Unsupported format: {}. Supported formats: png, svg",
output_format
);
std::process::exit(1);
}
}
}
Err(e) => {
eprintln!("Failed to parse XY chart: {:?}", e);
std::process::exit(1);
}
},
}
}
Err(e) => {
eprintln!(
"Failed to parse chart (unknown type or invalid config): {:?}",
e
);
std::process::exit(1);
}
}
}
Err(e) => {
eprintln!("Failed to read input file: {}", e);
std::process::exit(1);
}
}
}