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| Dir : //opt/alt/alt-nodejs14/root/usr/lib/node_modules/npm/node_modules.bundled/gauge/render-template.js |
'use strict'
var align = require('wide-align')
var validate = require('aproba')
var objectAssign = require('object-assign')
var wideTruncate = require('./wide-truncate')
var error = require('./error')
var TemplateItem = require('./template-item')
function renderValueWithValues (values) {
return function (item) {
return renderValue(item, values)
}
}
var renderTemplate = module.exports = function (width, template, values) {
var items = prepareItems(width, template, values)
var rendered = items.map(renderValueWithValues(values)).join('')
return align.left(wideTruncate(rendered, width), width)
}
function preType (item) {
var cappedTypeName = item.type[0].toUpperCase() + item.type.slice(1)
return 'pre' + cappedTypeName
}
function postType (item) {
var cappedTypeName = item.type[0].toUpperCase() + item.type.slice(1)
return 'post' + cappedTypeName
}
function hasPreOrPost (item, values) {
if (!item.type) return
return values[preType(item)] || values[postType(item)]
}
function generatePreAndPost (baseItem, parentValues) {
var item = objectAssign({}, baseItem)
var values = Object.create(parentValues)
var template = []
var pre = preType(item)
var post = postType(item)
if (values[pre]) {
template.push({value: values[pre]})
values[pre] = null
}
item.minLength = null
item.length = null
item.maxLength = null
template.push(item)
values[item.type] = values[item.type]
if (values[post]) {
template.push({value: values[post]})
values[post] = null
}
return function ($1, $2, length) {
return renderTemplate(length, template, values)
}
}
function prepareItems (width, template, values) {
function cloneAndObjectify (item, index, arr) {
var cloned = new TemplateItem(item, width)
var type = cloned.type
if (cloned.value == null) {
if (!(type in values)) {
if (cloned.default == null) {
throw new error.MissingTemplateValue(cloned, values)
} else {
cloned.value = cloned.default
}
} else {
cloned.value = values[type]
}
}
if (cloned.value == null || cloned.value === '') return null
cloned.index = index
cloned.first = index === 0
cloned.last = index === arr.length - 1
if (hasPreOrPost(cloned, values)) cloned.value = generatePreAndPost(cloned, values)
return cloned
}
var output = template.map(cloneAndObjectify).filter(function (item) { return item != null })
var outputLength = 0
var remainingSpace = width
var variableCount = output.length
function consumeSpace (length) {
if (length > remainingSpace) length = remainingSpace
outputLength += length
remainingSpace -= length
}
function finishSizing (item, length) {
if (item.finished) throw new error.Internal('Tried to finish template item that was already finished')
if (length === Infinity) throw new error.Internal('Length of template item cannot be infinity')
if (length != null) item.length = length
item.minLength = null
item.maxLength = null
--variableCount
item.finished = true
if (item.length == null) item.length = item.getBaseLength()
if (item.length == null) throw new error.Internal('Finished template items must have a length')
consumeSpace(item.getLength())
}
output.forEach(function (item) {
if (!item.kerning) return
var prevPadRight = item.first ? 0 : output[item.index - 1].padRight
if (!item.first && prevPadRight < item.kerning) item.padLeft = item.kerning - prevPadRight
if (!item.last) item.padRight = item.kerning
})
// Finish any that have a fixed (literal or intuited) length
output.forEach(function (item) {
if (item.getBaseLength() == null) return
finishSizing(item)
})
var resized = 0
var resizing
var hunkSize
do {
resizing = false
hunkSize = Math.round(remainingSpace / variableCount)
output.forEach(function (item) {
if (item.finished) return
if (!item.maxLength) return
if (item.getMaxLength() < hunkSize) {
finishSizing(item, item.maxLength)
resizing = true
}
})
} while (resizing && resized++ < output.length)
if (resizing) throw new error.Internal('Resize loop iterated too many times while determining maxLength')
resized = 0
do {
resizing = false
hunkSize = Math.round(remainingSpace / variableCount)
output.forEach(function (item) {
if (item.finished) return
if (!item.minLength) return
if (item.getMinLength() >= hunkSize) {
finishSizing(item, item.minLength)
resizing = true
}
})
} while (resizing && resized++ < output.length)
if (resizing) throw new error.Internal('Resize loop iterated too many times while determining minLength')
hunkSize = Math.round(remainingSpace / variableCount)
output.forEach(function (item) {
if (item.finished) return
finishSizing(item, hunkSize)
})
return output
}
function renderFunction (item, values, length) {
validate('OON', arguments)
if (item.type) {
return item.value(values, values[item.type + 'Theme'] || {}, length)
} else {
return item.value(values, {}, length)
}
}
function renderValue (item, values) {
var length = item.getBaseLength()
var value = typeof item.value === 'function' ? renderFunction(item, values, length) : item.value
if (value == null || value === '') return ''
var alignWith = align[item.align] || align.left
var leftPadding = item.padLeft ? align.left('', item.padLeft) : ''
var rightPadding = item.padRight ? align.right('', item.padRight) : ''
var truncated = wideTruncate(String(value), length)
var aligned = alignWith(truncated, length)
return leftPadding + aligned + rightPadding
}