5190a64017
- Return native FIG archives as raw IPC responses instead of JSON byte arrays - Decode the response as an ArrayBuffer and cover the binary contract - Prevent large desktop exports from multiplying memory use during save
68 lines
2.3 KiB
Rust
68 lines
2.3 KiB
Rust
use serde::Deserialize;
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use std::io::{Cursor, Write};
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#[derive(Deserialize)]
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pub struct ImageEntry {
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name: String,
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data: Vec<u8>,
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}
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#[tauri::command]
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pub fn build_fig_file(
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schema_deflated: Vec<u8>,
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kiwi_data: Vec<u8>,
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thumbnail_png: Vec<u8>,
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meta_json: String,
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images: Option<Vec<ImageEntry>>,
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fig_kiwi_version: Option<u32>,
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) -> Result<tauri::ipc::Response, String> {
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let mut encoder = zstd::Encoder::new(Vec::new(), 3).map_err(|e| e.to_string())?;
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encoder
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.include_contentsize(true)
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.map_err(|e| e.to_string())?;
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encoder
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.set_pledged_src_size(Some(kiwi_data.len() as u64))
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.map_err(|e| e.to_string())?;
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encoder.write_all(&kiwi_data).map_err(|e| e.to_string())?;
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let zstd_data = encoder.finish().map_err(|e| e.to_string())?;
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let version: u32 = fig_kiwi_version.unwrap_or(101);
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let fig_kiwi_len = 8 + 4 + 4 + schema_deflated.len() + 4 + zstd_data.len();
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let mut fig_kiwi = Vec::with_capacity(fig_kiwi_len);
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fig_kiwi.extend_from_slice(b"fig-kiwi");
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fig_kiwi.extend_from_slice(&version.to_le_bytes());
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fig_kiwi.extend_from_slice(&(schema_deflated.len() as u32).to_le_bytes());
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fig_kiwi.extend_from_slice(&schema_deflated);
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fig_kiwi.extend_from_slice(&(zstd_data.len() as u32).to_le_bytes());
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fig_kiwi.extend_from_slice(&zstd_data);
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let buf = Cursor::new(Vec::new());
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let mut zip = zip::ZipWriter::new(buf);
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let options =
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zip::write::SimpleFileOptions::default().compression_method(zip::CompressionMethod::Stored);
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zip.start_file("canvas.fig", options)
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.map_err(|e| e.to_string())?;
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zip.write_all(&fig_kiwi).map_err(|e| e.to_string())?;
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zip.start_file("thumbnail.png", options)
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.map_err(|e| e.to_string())?;
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zip.write_all(&thumbnail_png).map_err(|e| e.to_string())?;
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zip.start_file("meta.json", options)
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.map_err(|e| e.to_string())?;
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zip.write_all(meta_json.as_bytes())
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.map_err(|e| e.to_string())?;
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if let Some(image_entries) = images {
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for entry in image_entries {
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zip.start_file(&entry.name, options)
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.map_err(|e| e.to_string())?;
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zip.write_all(&entry.data).map_err(|e| e.to_string())?;
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}
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}
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let result = zip.finish().map_err(|e| e.to_string())?;
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Ok(tauri::ipc::Response::new(result.into_inner()))
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}
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