Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | 3x 3x 87x 87x 87x 87x 87x 87x 87x 86x 86x 86x 86x 86x 87x 208x 208x 208x 208x 86x 438x 261x 261x 261x 261x 261x 261x 261x 261x 438x 438x 86x 86x 86x 86x 86x 86x 438x 91x 18x 18x 18x 91x 91x 438x 86x 86x 208x 86x 86x | const range: number = 2
export function generateCodeFrame(
source: string,
start = 0,
end: number = source.length,
): string {
// Ensure start and end are within the source length
start = Math.max(0, Math.min(start, source.length))
end = Math.max(0, Math.min(end, source.length))
if (start > end) return ''
// Split the content into individual lines but capture the newline sequence
// that separated each line. This is important because the actual sequence is
// needed to properly take into account the full line length for offset
// comparison
let lines = source.split(/(\r?\n)/)
// Separate the lines and newline sequences into separate arrays for easier referencing
const newlineSequences = lines.filter((_, idx) => idx % 2 === 1)
lines = lines.filter((_, idx) => idx % 2 === 0)
let count = 0
const res: string[] = []
for (let i = 0; i < lines.length; i++) {
count +=
lines[i].length +
((newlineSequences[i] && newlineSequences[i].length) || 0)
if (count >= start) {
for (let j = i - range; j <= i + range || end > count; j++) {
if (j < 0 || j >= lines.length) continue
const line = j + 1
res.push(
`${line}${' '.repeat(Math.max(3 - String(line).length, 0))}| ${
lines[j]
}`,
)
const lineLength = lines[j].length
const newLineSeqLength =
(newlineSequences[j] && newlineSequences[j].length) || 0
if (j === i) {
// push underline
const pad = start - (count - (lineLength + newLineSeqLength))
const length = Math.max(
1,
end > count ? lineLength - pad : end - start,
)
res.push(` | ` + ' '.repeat(pad) + '^'.repeat(length))
} else if (j > i) {
if (end > count) {
const length = Math.max(Math.min(end - count, lineLength), 1)
res.push(` | ` + '^'.repeat(length))
}
count += lineLength + newLineSeqLength
}
}
break
}
}
return res.join('\n')
}
|