Sha256: 050618682ff6af00fadd4dee50b9ff6fc5c903da5045b24603307a8e01539ab6
Contents?: true
Size: 1.61 KB
Versions: 23
Compression:
Stored size: 1.61 KB
Contents
'use strict'
module.exports = factory
function factory(file) {
var contents = indices(String(file))
return {
toPosition: offsetToPositionFactory(contents),
toOffset: positionToOffsetFactory(contents)
}
}
// Factory to get the line and column-based `position` for `offset` in the bound
// indices.
function offsetToPositionFactory(indices) {
return offsetToPosition
// Get the line and column-based `position` for `offset` in the bound indices.
function offsetToPosition(offset) {
var index = -1
var length = indices.length
if (offset < 0) {
return {}
}
while (++index < length) {
if (indices[index] > offset) {
return {
line: index + 1,
column: offset - (indices[index - 1] || 0) + 1,
offset: offset
}
}
}
return {}
}
}
// Factory to get the `offset` for a line and column-based `position` in the
// bound indices.
function positionToOffsetFactory(indices) {
return positionToOffset
// Get the `offset` for a line and column-based `position` in the bound
// indices.
function positionToOffset(position) {
var line = position && position.line
var column = position && position.column
if (!isNaN(line) && !isNaN(column) && line - 1 in indices) {
return (indices[line - 2] || 0) + column - 1 || 0
}
return -1
}
}
// Get indices of line-breaks in `value`.
function indices(value) {
var result = []
var index = value.indexOf('\n')
while (index !== -1) {
result.push(index + 1)
index = value.indexOf('\n', index + 1)
}
result.push(value.length + 1)
return result
}
Version data entries
23 entries across 23 versions & 1 rubygems