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Tentative: Implemented binary output from fs_cat. #16

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Merged
merged 2 commits into from
Nov 14, 2024
Merged

Tentative: Implemented binary output from fs_cat. #16

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f3e2c58
Tentative: Implemented binary output from fs_cat.
ubidefeo Nov 14, 2024
ab3070f
Restored the text-based fs_cat method and implemented fs_cat_binary.
ubidefeo Nov 14, 2024
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19 changes: 19 additions & 0 deletions micropython.js
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,12 @@ function extract(out) {
return out.slice(2, -3)
}

function extractBytes(out, cut_before = 2, cut_after = 3) {
bytes = out.slice(cut_before, -cut_after)
bytes = bytes.split(',').map(Number)
return bytes
}

class MicroPythonBoard {
constructor() {
this.port = null
Expand Down Expand Up @@ -250,6 +256,19 @@ class MicroPythonBoard {
return Promise.resolve(files)
}

async fs_cat_binary(filePath) {
if (filePath) {
await this.enter_raw_repl()
let output = await this.exec_raw(
`with open('${filePath}','rb') as f:\n while 1:\n b=f.read(256)\n if not b:break\n print(",".join(str(e) for e in b),end=',')`
)
await this.exit_raw_repl()
output = extractBytes(output, 2, 4)
return Promise.resolve((output))
}
return Promise.reject(new Error(`Path to file was not specified`))
}

async fs_cat(filePath) {
if (filePath) {
await this.enter_raw_repl()
Expand Down