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Original file line number | Diff line number | Diff line change |
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'use strict' | ||
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function stream(from, cb) { | ||
let buff = '' | ||
let lastChar = '' | ||
let len = 0 | ||
let depth = 0 | ||
let isString = false | ||
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||
let count = 0 | ||
let head = '' | ||
const check = (i) => { | ||
if (depth <= 0) { | ||
const input = buff.substring(0, len + i + 1) | ||
|
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if (count > 0) { | ||
if (head !== '') { | ||
const json = JSON.parse(head) | ||
cb(json) | ||
head = '' | ||
} | ||
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const json = JSON.parse(input) | ||
cb(json) | ||
} else { | ||
head = input | ||
} | ||
|
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buff = buff.substring(len + i + 1) | ||
len = -i - 1 | ||
count++ | ||
} | ||
} | ||
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return { | ||
isStream() { | ||
return count > 1 | ||
}, | ||
value() { | ||
return head + buff | ||
}, | ||
read() { | ||
let chunk | ||
|
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while ((chunk = from.read())) { | ||
len = buff.length | ||
buff += chunk | ||
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for (let i = 0; i < chunk.length; i++) { | ||
if (isString) { | ||
if (chunk[i] === '"' && ((i === 0 && lastChar !== '\\') || (i > 0 && chunk[i - 1] !== '\\'))) { | ||
isString = false | ||
check(i) | ||
} | ||
continue | ||
} | ||
|
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if (chunk[i] === '{' || chunk[i] === '[') { | ||
depth++ | ||
} else if (chunk[i] === '}' || chunk[i] === ']') { | ||
depth-- | ||
check(i) | ||
} else if (chunk[i] === '"') { | ||
isString = true | ||
} | ||
} | ||
|
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lastChar = chunk[chunk.length - 1] | ||
} | ||
} | ||
} | ||
} | ||
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module.exports = stream |
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