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columnify

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columnify - npm Package Compare versions

Comparing version 0.1.2 to 1.0.0

LICENSE

45

index.js
"use strict"
var wcwidth = require('wcwidth.js')({ monkeypatch: false, control: 0 })
var utils = require('./utils')

@@ -7,2 +8,3 @@ var padRight = utils.padRight

var splitLongWords = utils.splitLongWords
var truncateString = utils.truncateString

@@ -15,2 +17,3 @@ var DEFAULTS = {

truncateMarker: '…',
preserveNewLines: false,
headingTransform: function(key) {

@@ -31,2 +34,5 @@ return key.toUpperCase()

var maxLineWidth = options.maxLineWidth || Infinity
delete options.maxLineWidth // this is a line control option, don't pass it to column
// Option defaults inheritance:

@@ -38,4 +44,7 @@ // options.config[columnName] => options => DEFAULTS

options.spacing = options.spacing || '\n' // probably useless
options.preserveNewLines = !!options.preserveNewLines
options.columns = options.columns || options.include // alias include/columns, prefer columns if supplied
var columnNames = options.columns || [] // optional user-supplied columns to include
var columnNames = options.include || [] // optional user-supplied columns to include
items = toArray(items, columnNames)

@@ -74,4 +83,9 @@ // if not suppled column names, automatically determine columns from data keys

result[columnName] = '' + result[columnName]
// remove funky chars
result[columnName] = result[columnName].replace(/\s+/g, " ")
if (columns[columnName].preserveNewLines) {
// merge non-newline whitespace chars
result[columnName] = result[columnName].replace(/[^\S\n]/gmi, ' ')
} else {
// merge all whitespace chars
result[columnName] = result[columnName].replace(/\s/gmi, ' ')
}
})

@@ -105,3 +119,3 @@ return result

}).reduce(function(min, cur) {
return Math.max(min, Math.min(column.maxWidth, Math.max(column.minWidth, cur.length)))
return Math.max(min, Math.min(column.maxWidth, Math.max(column.minWidth, wcwidth(cur))))
}, 0)

@@ -128,3 +142,3 @@ })

if (column.truncate && item[columnName].length > 1) {
item[columnName] = splitIntoLines(cell, column.width - column.truncateMarker.length)
item[columnName] = splitIntoLines(cell, column.width - wcwidth(column.truncateMarker))
var firstLine = item[columnName][0]

@@ -143,3 +157,3 @@ if (!endsWith(firstLine, column.truncateMarker)) item[columnName][0] += column.truncateMarker

return item[columnName].reduce(function(min, cur) {
return Math.max(min, Math.min(column.maxWidth, Math.max(column.minWidth, cur.length)))
return Math.max(min, Math.min(column.maxWidth, Math.max(column.minWidth, wcwidth(cur))))
}, 0)

@@ -151,4 +165,4 @@ }).reduce(function(min, cur) {

var rows = createRows(items, columns, columnNames) // merge lines into rows
// conceive output

@@ -159,3 +173,5 @@ return rows.reduce(function(output, row) {

}, []))
}, []).join(options.spacing)
}, []).map(function(line) {
return truncateString(line, maxLineWidth)
}).join(options.spacing)
}

@@ -221,1 +237,14 @@

}
function toArray(items, columnNames) {
if (Array.isArray(items)) return items
var rows = []
for (var key in items) {
var item = {}
item[columnNames[0] || 'key'] = key
item[columnNames[1] || 'value'] = items[key]
rows.push(item)
}
return rows
}

16

package.json
{
"name": "columnify",
"version": "0.1.2",
"version": "1.0.0",
"description": "Render data in text columns, supports in-column text-wrap.",
"main": "index.js",
"scripts": {
"test": "tap test"
"test": "faucet"
},

@@ -12,4 +12,4 @@ "author": "Tim Oxley",

"devDependencies": {
"tape": "~2.3.0",
"tap": "~0.4.6"
"faucet": "0.0.1",
"tape": "~2.12.3"
},

@@ -32,3 +32,9 @@ "repository": {

},
"homepage": "https://github.com/timoxley/columnify"
"homepage": "https://github.com/timoxley/columnify",
"dependencies": {
"wcwidth.js": "~0.0.4"
},
"directories": {
"test": "test"
}
}

209

Readme.md

@@ -5,5 +5,9 @@ # columnify

Create text-based columns suitable for console output.
Supports minimum and maximum column widths via truncation and text wrapping.
Create text-based columns suitable for console output from objects or
arrays of objects.
Columns are automatically resized to fit the content of the largest
cell. Each cell will be padded with spaces to fill the available space
and ensure column contents are left-aligned.
Designed to [handle sensible wrapping in npm search results](https://github.com/isaacs/npm/pull/2328).

@@ -23,3 +27,3 @@

```js
```javascript
var columnify = require('columnify')

@@ -32,10 +36,52 @@ var columns = columnify(data, options)

### Simple Columns
### Columnify Objects
Text is aligned under column headings. Columns are automatically resized
to fit the content of the largest cell. Each cell will be padded with
spaces to fill the available space and ensure column contents are
left-aligned.
Objects are converted to a list of key/value pairs:
```js
```javascript
var data = {
"commander@0.6.1": 1,
"minimatch@0.2.14": 3,
"mkdirp@0.3.5": 2,
"sigmund@1.0.0": 3
}
console.log(columnify(data))
```
#### Output:
```
KEY VALUE
commander@0.6.1 1
minimatch@0.2.14 3
mkdirp@0.3.5 2
sigmund@1.0.0 3
```
### Custom Column Names
```javascript
var data = {
"commander@0.6.1": 1,
"minimatch@0.2.14": 3,
"mkdirp@0.3.5": 2,
"sigmund@1.0.0": 3
}
console.log(columnify(data, {columns: ['MODULE', 'COUNT']}))
```
#### Output:
```
MODULE COUNT
commander@0.6.1 1
minimatch@0.2.14 3
mkdirp@0.3.5 2
sigmund@1.0.0 3
```
### Columnify Arrays of Objects
Column headings are extracted from the keys in supplied objects.
```javascript
var columnify = require('columnify')

@@ -53,2 +99,3 @@

```
#### Output:
```

@@ -67,4 +114,3 @@ NAME VERSION

```js
var columnify = require('columnify')
```javascript

@@ -83,2 +129,3 @@ var columns = columnify([{

```
#### Output:
```

@@ -92,3 +139,3 @@ NAME DESCRIPTION VERSION

### Truncated Columns
### Truncating Column Cells

@@ -99,3 +146,3 @@ You can disable wrapping and instead truncate content at the maximum

```js
```javascript
var columns = columnify(data, {

@@ -112,3 +159,3 @@ truncate: true,

```
#### Output:
```

@@ -120,3 +167,87 @@ NAME DESCRIPTION VERSION

### Filtering & Ordering Columns
By default, all properties are converted into columns, whether or not
they exist on every object or not.
To explicitly specify which columns to include, and in which order,
supply a "columns" or "include" array ("include" is just an alias).
```javascript
var data = [{
name: 'module1',
description: 'some description',
version: '0.0.1',
}, {
name: 'module2',
description: 'another description',
version: '0.2.0',
}]
var columns = columnify(data, {
columns: ['name', 'version'] // note description not included
})
console.log(columns)
```
#### Output:
```
NAME VERSION
module1 0.0.1
module2 0.2.0
```
## Other Configuration Options
### Preserve existing newlines
By default, `columnify` sanitises text by replacing any occurance of 1 or more whitespace characters with a single space.
`columnify` can be configured to respect existing new line characters using the `preserveNewLines` option. Note this will still collapse all other whitespace.
```javascript
var data = [{
name: "glob@3.2.9",
paths: [
"node_modules/tap/node_modules/glob",
"node_modules/tape/node_modules/glob"
].join('\n')
}, {
name: "nopt@2.2.1",
paths: [
"node_modules/tap/node_modules/nopt"
]
}, {
name: "runforcover@0.0.2",
paths: "node_modules/tap/node_modules/runforcover"
}]
console.log(columnify(data, {preserveNewLines: true}))
```
#### Output:
```
NAME PATHS
glob@3.2.9 node_modules/tap/node_modules/glob
node_modules/tape/node_modules/glob
nopt@2.2.1 node_modules/tap/node_modules/nopt
runforcover@0.0.2 node_modules/tap/node_modules/runforcover
```
Compare this with output without `preserveNewLines`:
```javascript
console.log(columnify(data, {preserveNewLines: false}))
// or just
console.log(columnify(data))
```
```
NAME PATHS
glob@3.2.9 node_modules/tap/node_modules/glob node_modules/tape/node_modules/glob
nopt@2.2.1 node_modules/tap/node_modules/nopt
runforcover@0.0.2 node_modules/tap/node_modules/runforcover
```
### Custom Truncation Marker

@@ -127,3 +258,3 @@

```js
```javascript
var columns = columnify(data, {

@@ -141,3 +272,3 @@ truncate: true,

```
#### Output:
```

@@ -154,3 +285,3 @@ NAME DESCRIPTION VERSION

```js
```javascript

@@ -163,2 +294,3 @@ var columns = columnify(data, {

```
#### Output:
```

@@ -170,35 +302,42 @@ NAME | DESCRIPTION | VERSION

### Filtering & Ordering Columns
## Multibyte Character Support
By default, all properties are converted into columns, whether or not
they exist on every object or not.
`columnify` uses [mycoboco/wcwidth.js](https://github.com/mycoboco/wcwidth.js) to calculate length of multibyte characters:
To explicitly specify which columns to include, and in which order,
supply an "include" array:
```js
```javascript
var data = [{
name: 'module1',
name: 'module-one',
description: 'some description',
version: '0.0.1',
}, {
name: 'module2',
description: 'another description',
version: '0.2.0',
name: '这是一个很长的名字的模块',
description: '这真的是一个描述的内容这个描述很长',
version: "0.3.3"
}]
var columns = columnify(data, {
include: ['name', 'version'] // note description not included
})
console.log(columnify(data))
```
console.log(columns)
#### Without multibyte handling:
i.e. before columnify added this feature
```
NAME DESCRIPTION VERSION
module-one some description 0.0.1
这是一个很长的名字的模块 这真的是一个描述的内容这个描述很长 0.3.3
```
#### With multibyte handling:
```
NAME VERSION
module1 0.0.1
module2 0.2.0
NAME DESCRIPTION VERSION
module-one some description 0.0.1
这是一个很长的名字的模块 这真的是一个描述的内容这个描述很长 0.3.3
```
## License
MIT

85

utils.js

@@ -0,1 +1,5 @@

"use strict"
var wcwidth = require('wcwidth.js')({ monkeypatch: false, control: 0 })
/**

@@ -14,3 +18,3 @@ * Pad `str` up to total length `max` with `chr`.

str = String(str)
var length = 1 + max - str.length
var length = 1 + max - wcwidth(str)
if (length <= 0) return str

@@ -23,3 +27,3 @@ return str + Array.apply(null, {length: length})

* Split a String `str` into lines of maxiumum length `max`.
* Splits on word boundaries.
* Splits on word boundaries. Preserves existing new lines.
*

@@ -32,12 +36,19 @@ * @param String str string to split

function splitIntoLines(str, max) {
return str.trim().split(' ').reduce(function(lines, word) {
var line = lines[lines.length - 1]
if (line && line.join(' ').length + word.length < max) {
lines[lines.length - 1].push(word) // add to line
}
else lines.push([word]) // new line
return lines
}, []).map(function(l) {
return l.join(' ')
})
function _splitIntoLines(str, max) {
return str.trim().split(' ').reduce(function(lines, word) {
var line = lines[lines.length - 1]
if (line && wcwidth(line.join(' ')) + wcwidth(word) < max) {
lines[lines.length - 1].push(word) // add to line
}
else lines.push([word]) // new line
return lines
}, []).map(function(l) {
return l.join(' ')
})
}
return str.split('\n').map(function(str) {
return _splitIntoLines(str, max)
}).reduce(function(lines, line) {
return lines.concat(line)
}, [])
}

@@ -61,8 +72,19 @@

var word = words.shift() || str
if (wcwidth(word) > max) {
// slice is based on length no wcwidth
var i = 0
var wwidth = 0
var limit = max - wcwidth(truncationChar)
while (i < word.length) {
var w = wcwidth(word.charAt(i))
if(w + wwidth > limit)
break
wwidth += w
++i
}
if (word.length > max) {
var remainder = word.slice(max - truncationChar.length) // get remainder
var remainder = word.slice(i) // get remainder
words.unshift(remainder) // save remainder for next loop
word = word.slice(0, max - truncationChar.length) // grab truncated word
word = word.slice(0, i) // grab truncated word
word += truncationChar // add trailing … or whatever

@@ -74,3 +96,34 @@ }

/**
* Truncate `str` into total width `max`
* If `str` is shorter than `max`, will return `str` unaltered.
*
* @param String str string to truncated
* @param Number max total wcwidth of output string
* @return String truncated str
*/
function truncateString(str, max) {
str = str != null ? str : ''
str = String(str)
if(max == Infinity) return str
var i = 0
var wwidth = 0
while (i < str.length) {
var w = wcwidth(str.charAt(i))
if(w + wwidth > max)
break
wwidth += w
++i
}
return str.slice(0, i)
}
/**
* Exports

@@ -82,1 +135,3 @@ */

module.exports.splitLongWords = splitLongWords
module.exports.truncateString = truncateString
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