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Merge pull request #23 from dcSpark/nico/fix-text-encoder
Nico/fix text encoder
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83 changes: 83 additions & 0 deletions
83
libs/shinkai-tools-runner/src/tools/quickjs_runtime/context_globals/text_decoder.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| use rquickjs::{function::Opt, Class, Ctx, Object, Result, Value}; | ||
|
|
||
| use super::utils::{bytes::get_bytes, encoding::Encoder, object::ObjectExt, result::ResultExt}; | ||
|
|
||
| #[rquickjs::class] | ||
| #[derive(rquickjs::class::Trace)] | ||
| pub struct TextDecoder { | ||
| #[qjs(skip_trace)] | ||
| encoder: Encoder, | ||
| fatal: bool, | ||
| ignore_bom: bool, | ||
| } | ||
|
|
||
| #[rquickjs::methods] | ||
| impl<'js> TextDecoder { | ||
| #[qjs(constructor)] | ||
| pub fn new(ctx: Ctx<'js>, label: Opt<String>, options: Opt<Object<'js>>) -> Result<Self> { | ||
| let encoding = label | ||
| .0 | ||
| .filter(|lbl| !lbl.is_empty()) | ||
| .unwrap_or_else(|| String::from("utf-8")); | ||
| let mut fatal = false; | ||
| let mut ignore_bom = false; | ||
|
|
||
| let encoder = Encoder::from_str(&encoding).or_throw_range(&ctx, None)?; | ||
|
|
||
| if let Some(options) = options.0 { | ||
| if let Some(opt) = options.get_optional("fatal")? { | ||
| fatal = opt; | ||
| } | ||
| if let Some(opt) = options.get_optional("ignoreBOM")? { | ||
| ignore_bom = opt; | ||
| } | ||
| } | ||
|
|
||
| Ok(TextDecoder { | ||
| encoder, | ||
| fatal, | ||
| ignore_bom, | ||
| }) | ||
| } | ||
|
|
||
| #[qjs(get)] | ||
| fn encoding(&self) -> &str { | ||
| self.encoder.as_label() | ||
| } | ||
|
|
||
| #[qjs(get)] | ||
| fn fatal(&self) -> bool { | ||
| self.fatal | ||
| } | ||
|
|
||
| #[qjs(get, rename = "ignoreBOM")] | ||
| fn ignore_bom(&self) -> bool { | ||
| self.ignore_bom | ||
| } | ||
|
|
||
| pub fn decode(&self, ctx: Ctx<'js>, buffer: Value<'js>) -> Result<String> { | ||
| let bytes = get_bytes(&ctx, buffer)?; | ||
| let start_pos = if !self.ignore_bom { | ||
| match bytes.get(..3) { | ||
| Some([0xFF, 0xFE, ..]) | Some([0xFE, 0xFF, ..]) => 2, | ||
| Some([0xEF, 0xBB, 0xBF]) => 3, | ||
| _ => 0, | ||
| } | ||
| } else { | ||
| 0 | ||
| }; | ||
|
|
||
| self.encoder | ||
| .encode_to_string(&bytes[start_pos..], !self.fatal) | ||
| .or_throw_type(&ctx, None) | ||
| } | ||
| } | ||
|
|
||
| pub fn init(ctx: &Ctx<'_>) -> Result<()> { | ||
| let globals = ctx.globals(); | ||
| Class::<TextDecoder>::define(&globals)?; | ||
| Ok(()) | ||
| } |
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