File size: 2,017 Bytes
c9c900b | 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 | import Git from '../../../git'
import { hunkSourceOf } from '../hunk-source-of'
import { leadingHunkOf } from '../leading-hunk-of'
import { MAX_CODE_CHARS } from '../max-code-chars'
import { subHunksOf } from '../sub-hunks-of'
import type Types from '../types'
import { drawnLineOf } from './drawn-line-of'
/**
* A file's hunks as the sources of `Code` blocks, one a hunk, stacked with
* nothing between as the built-in stacks a file's hunks.
*
* A hunk longer than MAX_CODE_CHARS is split (subHunksOf) into several. The
* body stops, truncated, at the whole lines the room holds as the host
* counts, a block a node; the room left comes back.
*
* @param hunks the file's hunks
* @param room the characters and nodes the pane's bodies have left
* @returns the sources in order, whether any line was left out or cut, and
* the room after them
*/
export function codeBlocksOf(
hunks: readonly Git.Hunk[],
room: Types.BodyRoom,
): Types.CodeBody {
const sources: string[] = []
let chars = 0
let isTruncated = false
const left = (): Types.BodyRoom => ({
chars: room.chars - chars,
nodes: room.nodes - sources.length,
})
for (const hunk of hunks) {
const lines = hunk.lines.filter(Git.isBodyLine).map(drawnLineOf)
const split = subHunksOf({ ...hunk, lines }, MAX_CODE_CHARS)
isTruncated ||= split.isTruncated
for (const piece of split.hunks) {
const fits = room.chars - chars
const isWhole = hunkSourceOf(piece).length <= fits
const fitted = isWhole ? piece : leadingHunkOf(piece, fits)
const isOverNodes = sources.length + 1 > room.nodes
if (isOverNodes || fitted.lines.length === 0) {
return { sources, isTruncated: true, room: left() }
}
const text = hunkSourceOf(fitted)
sources.push(text)
chars += text.length
if (fitted.lines.length < piece.lines.length) {
return { sources, isTruncated: true, room: left() }
}
}
}
return { sources, isTruncated, room: left() }
}
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