clean: Improve README with suggestions

This commit is contained in:
Rodrigo Fernandes 2021-04-04 12:29:44 +01:00
parent 8fc491c499
commit 006d82c02b
No known key found for this signature in database
GPG key ID: F44EAFEEB15615CB

447
README.md
View file

@ -4,7 +4,7 @@
[![Codacy Coverage Badge](https://api.codacy.com/project/badge/Coverage/06412dc3f5a14f568778d0db8a1f7dc8)](https://www.codacy.com/app/rtfpessoa/diff2html?utm_source=github.com&utm_medium=referral&utm_content=rtfpessoa/diff2html&utm_campaign=Badge_Coverage) [![Codacy Coverage Badge](https://api.codacy.com/project/badge/Coverage/06412dc3f5a14f568778d0db8a1f7dc8)](https://www.codacy.com/app/rtfpessoa/diff2html?utm_source=github.com&utm_medium=referral&utm_content=rtfpessoa/diff2html&utm_campaign=Badge_Coverage)
[![CircleCI](https://circleci.com/gh/rtfpessoa/diff2html.svg?style=svg)](https://circleci.com/gh/rtfpessoa/diff2html) [![CircleCI](https://circleci.com/gh/rtfpessoa/diff2html.svg?style=svg)](https://circleci.com/gh/rtfpessoa/diff2html)
[![npm](https://img.shields.io/npm/v/diff2html.svg)](https://www.npmjs.com/package/diff2html) [![npm](https://img.shields.io/npm/v/diff2html?style=flat)](https://www.npmjs.com/package/diff2html)
[![Dependency Status](https://david-dm.org/rtfpessoa/diff2html.svg)](https://david-dm.org/rtfpessoa/diff2html) [![Dependency Status](https://david-dm.org/rtfpessoa/diff2html.svg)](https://david-dm.org/rtfpessoa/diff2html)
[![devDependency Status](https://david-dm.org/rtfpessoa/diff2html/dev-status.svg)](https://david-dm.org/rtfpessoa/diff2html#info=devDependencies) [![devDependency Status](https://david-dm.org/rtfpessoa/diff2html/dev-status.svg)](https://david-dm.org/rtfpessoa/diff2html#info=devDependencies)
[![jsdelivr CDN Downloads](https://data.jsdelivr.com/v1/package/npm/diff2html/badge)](https://www.jsdelivr.com/package/npm/diff2html) [![jsdelivr CDN Downloads](https://data.jsdelivr.com/v1/package/npm/diff2html/badge)](https://www.jsdelivr.com/package/npm/diff2html)
@ -26,16 +26,17 @@ diff2html generates pretty HTML diffs from git diff or unified diff output.
- [Online Example](#online-example) - [Online Example](#online-example)
- [Distributions](#distributions) - [Distributions](#distributions)
- [Usage](#usage) - [Usage](#usage)
- [Diff2HtmlUI Usage](#diff2htmlui-usage)
- [Diff2HtmlUI API](#diff2htmlui-api)
- [Diff2HtmlUI Configuration](#diff2htmlui-configuration)
- [Diff2HtmlUI Browser](#diff2htmlui-browser)
- [Diff2HtmlUI Examples](#diff2htmlui-examples)
- [Diff2Html Usage](#diff2html-usage) - [Diff2Html Usage](#diff2html-usage)
- [Diff2Html API](#diff2html-api) - [Diff2Html API](#diff2html-api)
- [Diff2Html Configuration](#diff2html-configuration) - [Diff2Html Configuration](#diff2html-configuration)
- [Diff2Html Browser](#diff2html-browser) - [Diff2Html Browser](#diff2html-browser)
- [Diff2Html NPM / Node.js Library](#diff2html-npm--nodejs-library) - [Diff2Html NPM / Node.js Library](#diff2html-npm--nodejs-library)
- [Diff2Html Examples](#diff2html-examples) - [Diff2Html Examples](#diff2html-examples)
- [Diff2HtmlUI Usage](#diff2htmlui-usage)
- [Diff2HtmlUI API](#diff2htmlui-api)
- [Diff2HtmlUI Configuration](#diff2htmlui-configuration)
- [Diff2HtmlUI Browser](#diff2htmlui-browser)
- [Troubleshooting](#troubleshooting) - [Troubleshooting](#troubleshooting)
- [1. Out of memory or Slow execution](#1-out-of-memory-or-slow-execution) - [1. Out of memory or Slow execution](#1-out-of-memory-or-slow-execution)
- [Contribute](#contribute) - [Contribute](#contribute)
@ -110,228 +111,13 @@ diff2html generates pretty HTML diffs from git diff or unified diff output.
Diff2Html can be used in various ways as listed in the [distributions](#distributions) section. The two main ways are: Diff2Html can be used in various ways as listed in the [distributions](#distributions) section. The two main ways are:
- [Diff2Html](#diff2html-usage): using the parser and html generator directly from the library gives you complete
control about what you can do with the json or html generated.
- [Diff2HtmlUI](#diff2htmlui-usage): using this wrapper makes it easy to inject the html in the DOM and adds some nice - [Diff2HtmlUI](#diff2htmlui-usage): using this wrapper makes it easy to inject the html in the DOM and adds some nice
features to the diff, like syntax highlight. features to the diff, like syntax highlight.
- [Diff2Html](#diff2html-usage): using the parser and html generator directly from the library gives you complete
control about what you can do with the json or html generated.
Bellow you can find more details and examples about each option. Bellow you can find more details and examples about each option.
## Diff2Html Usage
To load correctly in the Browser you always need to include the stylesheet in the final HTML.
Import the stylesheet
```html
<!-- CSS -->
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
```
### Diff2Html API
> JSON representation of the diff
```ts
function parse(diffInput: string, configuration: Diff2HtmlConfig = {}): DiffFile[];
```
> Pretty HTML representation of the diff
```ts
function html(diffInput: string | DiffFile[], configuration: Diff2HtmlConfig = {}): string;
```
### Diff2Html Configuration
The HTML output accepts a Javascript object with configuration. Possible options:
- `outputFormat`: the format of the output data: `'line-by-line'` or `'side-by-side'`, default is `'line-by-line'`
- `drawFileList`: show a file list before the diff: `true` or `false`, default is `true`
- `diffStyle`: show differences level in each line: `word` or `char`, default is `word`
- `diffMaxChanges`: number of changed lines after which a file diff is deemed as too big and not displayed, default is
`undefined`
- `diffMaxLineLength`: number of characters in a diff line after which a file diff is deemed as too big and not
displayed, default is `undefined`
- `diffTooBigMessage`: function allowing to customize the message in case of file diff too big (if `diffMaxChanges` or
`diffMaxLineLength` is set)
- `matching`: matching level: `'lines'` for matching lines, `'words'` for matching lines and words or `'none'`, default
is `none`
- `matchWordsThreshold`: similarity threshold for word matching, default is `0.25`
- `matchingMaxComparisons`: perform at most this much comparisons for line matching a block of changes, default is
`2500`
- `maxLineSizeInBlockForComparison`: maximum number os characters of the bigger line in a block to apply comparison,
default is `200`
- `maxLineLengthHighlight`: only perform diff changes highlight if lines are smaller than this, default is `10000`
- `renderNothingWhenEmpty`: render nothing if the diff shows no change in its comparison: `true` or `false`, default is
`false`
- `compiledTemplates`: object with previously compiled templates to replace parts of the html
- `rawTemplates`: object with raw not compiled templates to replace parts of the html
> For more information regarding the possible templates look into
> [src/templates](https://github.com/rtfpessoa/diff2html/tree/master/src/templates)
### Diff2Html Browser
Import the stylesheet and the library code
```html
<!-- CSS -->
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
<!-- Javascripts -->
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html.min.js"></script>
```
It will now be available as a global variable named `Diff2Html`.
```js
document.addEventListener('DOMContentLoaded', () => {
var diffHtml = global.Diff2Html.html('<Unified Diff String>', {
drawFileList: true,
matching: 'lines',
outputFormat: 'side-by-side',
});
document.getElementById('destination-elem-id').innerHTML = diffHtml;
});
```
### Diff2Html NPM / Node.js Library
```js
const Diff2html = require('diff2html');
const diffJson = Diff2html.parse('<Unified Diff String>');
const diffHtml = Diff2html.html(diffJson, { drawFileList: true });
document.getElementById('destination-elem-id').innerHTML = diffHtml;
```
### Diff2Html Examples
#### Diff2Html Example using plain HTML/JS
```html
<!DOCTYPE html>
<html lang="en-us"><head>
<meta charset="utf-8">
<!--Make sure to load the CSS file in that order-->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.7.1/styles/github.min.css" />
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js"></script>
</head>
<script>
const diffString = `diff --git a/sample.js b/sample.js
index 0000001..0ddf2ba
--- a/sample.js
+++ b/sample.js
@@ -1 +1 @@
-console.log("Hello World!")
+console.log("Hello from Diff2Html!")`;
document.addEventListener('DOMContentLoaded', function () {
var targetElement = document.getElementById('myDiffElement');
var configuration = {
inputFormat: 'json',
drawFileList: true,
fileListToggle: false,
fileListStartVisible: false,
fileContentToggle: false,
matching: 'lines',
outputFormat: 'side-by-side',
synchronisedScroll: true,
highlight: true,
renderNothingWhenEmpty: false };
var diff2htmlUi = new Diff2HtmlUI(targetElement, diffString, configuration);
diff2htmlUi.draw();
diff2htmlUi.highlightCode();
});
</script>
<body>
<div id="myDiffElement"></div>
</body>
</html>
```
#### Diff2Html Example using Angular
- Typescript
```typescript
import * as Diff2Html from 'diff2html';
import { Component, OnInit } from '@angular/core';
export class AppDiffComponent implements OnInit {
outputHtml: string;
constructor() {
this.init();
}
ngOnInit() {}
init() {
let strInput =
'--- a/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n+++ b/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n@@ -1035,6 +1035,17 @@ func Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (\n \n // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n \n+func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {\n+\tr0, _, e1 := Syscall6(SYS_PSELECT6, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))\n+\tn = int(r0)\n+\tif e1 != 0 {\n+\t\terr = errnoErr(e1)\n+\t}\n+\treturn\n+}\n+\n+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n+\n func read(fd int, p []byte) (n int, err error) {\n \tvar _p0 unsafe.Pointer\n \tif len(p) > 0 {\n';
let outputHtml = Diff2Html.html(strInput, { drawFileList: true, matching: 'lines' });
this.outputHtml = outputHtml;
}
}
```
- HTML
```html
<!DOCTYPE html>
<html>
<head>
<title>diff2html</title>
</head>
<body>
<div [innerHtml]="outputHtml"></div>
</body>
</html>
```
- `.angular-cli.json` - Add styles
```json
"styles": [
"diff2html.min.css"
]
```
#### Diff2Html Example using Vue.js
```vue
<template>
<div v-html="prettyHtml" />
</template>
<script>
import * as Diff2Html from 'diff2html';
import 'diff2html/bundles/css/diff2html.min.css';
export default {
data() {
return {
diffs:
'--- a/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n+++ b/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n@@ -1035,6 +1035,17 @@ func Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (\n \n // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n \n+func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {\n+\tr0, _, e1 := Syscall6(SYS_PSELECT6, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))\n+\tn = int(r0)\n+\tif e1 != 0 {\n+\t\terr = errnoErr(e1)\n+\t}\n+\treturn\n+}\n+\n+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n+\n func read(fd int, p []byte) (n int, err error) {\n \tvar _p0 unsafe.Pointer\n \tif len(p) > 0 {\n',
};
},
computed: {
prettyHtml() {
return Diff2Html.html(this.diffs, {
drawFileList: true,
matching: 'lines',
outputFormat: 'side-by-side',
});
},
},
};
</script>
```
## Diff2HtmlUI Usage ## Diff2HtmlUI Usage
> Simple wrapper to ease simple tasks in the browser such as: code highlight and js effects > Simple wrapper to ease simple tasks in the browser such as: code highlight and js effects
@ -371,8 +157,7 @@ highlightCode(): void
- `fileListToggle`: allow the file summary list to be toggled: `true` or `false`, default is `true` - `fileListToggle`: allow the file summary list to be toggled: `true` or `false`, default is `true`
- `fileListStartVisible`: choose if the file summary list starts visible: `true` or `false`, default is `false` - `fileListStartVisible`: choose if the file summary list starts visible: `true` or `false`, default is `false`
- `fileContentToggle`: allow each file contents to be toggled: `true` or `false`, default is `true` - `fileContentToggle`: allow each file contents to be toggled: `true` or `false`, default is `true`
- [All the options](#diff2html-configuration) from Diff2Html are also valid configurations in Diff2HtmlUI
> NOTE: All the options from Diff2Html are also valid configurations in Diff2HtmlUI
### Diff2HtmlUI Browser ### Diff2HtmlUI Browser
@ -405,6 +190,8 @@ diff2htmlUi.draw();
#### Syntax Highlight #### Syntax Highlight
**NOTE:** The highlight.js css should come before the diff2html css
```html ```html
<!-- Stylesheet --> <!-- Stylesheet -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/styles/github.min.css" /> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/styles/github.min.css" />
@ -454,6 +241,218 @@ document.addEventListener('DOMContentLoaded', () => {
}); });
``` ```
### Diff2HtmlUI Examples
#### Example with plain HTML+CSS+JS
```html
<!DOCTYPE html>
<html lang="en-us">
<head>
<meta charset="utf-8" />
<!-- Make sure to load the highlight.js CSS file before the Diff2Html CSS file -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.7.1/styles/github.min.css" />
<link
rel="stylesheet"
type="text/css"
href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css"
/>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js"></script>
</head>
<script>
const diffString = `diff --git a/sample.js b/sample.js
index 0000001..0ddf2ba
--- a/sample.js
+++ b/sample.js
@@ -1 +1 @@
-console.log("Hello World!")
+console.log("Hello from Diff2Html!")`;
document.addEventListener('DOMContentLoaded', function () {
var targetElement = document.getElementById('myDiffElement');
var configuration = {
inputFormat: 'json',
drawFileList: true,
fileListToggle: false,
fileListStartVisible: false,
fileContentToggle: false,
matching: 'lines',
outputFormat: 'side-by-side',
synchronisedScroll: true,
highlight: true,
renderNothingWhenEmpty: false,
};
var diff2htmlUi = new Diff2HtmlUI(targetElement, diffString, configuration);
diff2htmlUi.draw();
diff2htmlUi.highlightCode();
});
</script>
<body>
<div id="myDiffElement"></div>
</body>
</html>
```
## Diff2Html Usage
### Diff2Html API
> JSON representation of the diff
```ts
function parse(diffInput: string, configuration: Diff2HtmlConfig = {}): DiffFile[];
```
> Pretty HTML representation of the diff
```ts
function html(diffInput: string | DiffFile[], configuration: Diff2HtmlConfig = {}): string;
```
### Diff2Html Configuration
The HTML output accepts a Javascript object with configuration. Possible options:
- `outputFormat`: the format of the output data: `'line-by-line'` or `'side-by-side'`, default is `'line-by-line'`
- `drawFileList`: show a file list before the diff: `true` or `false`, default is `true`
- `diffStyle`: show differences level in each line: `word` or `char`, default is `word`
- `diffMaxChanges`: number of changed lines after which a file diff is deemed as too big and not displayed, default is
`undefined`
- `diffMaxLineLength`: number of characters in a diff line after which a file diff is deemed as too big and not
displayed, default is `undefined`
- `diffTooBigMessage`: function allowing to customize the message in case of file diff too big (if `diffMaxChanges` or
`diffMaxLineLength` is set)
- `matching`: matching level: `'lines'` for matching lines, `'words'` for matching lines and words or `'none'`, default
is `none`
- `matchWordsThreshold`: similarity threshold for word matching, default is `0.25`
- `matchingMaxComparisons`: perform at most this much comparisons for line matching a block of changes, default is
`2500`
- `maxLineSizeInBlockForComparison`: maximum number os characters of the bigger line in a block to apply comparison,
default is `200`
- `maxLineLengthHighlight`: only perform diff changes highlight if lines are smaller than this, default is `10000`
- `renderNothingWhenEmpty`: render nothing if the diff shows no change in its comparison: `true` or `false`, default is
`false`
- `compiledTemplates`: object with previously compiled templates to replace parts of the html
- `rawTemplates`: object with raw not compiled templates to replace parts of the html
> For more information regarding the possible templates look into
> [src/templates](https://github.com/rtfpessoa/diff2html/tree/master/src/templates)
### Diff2Html Browser
Import the stylesheet and the library code.
To load correctly in the Browser you need to include the stylesheet in the final HTML.
```html
<!-- CSS -->
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
<!-- Javascripts -->
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html.min.js"></script>
```
It will now be available as a global variable named `Diff2Html`.
```js
document.addEventListener('DOMContentLoaded', () => {
var diffHtml = Diff2Html.html('<Unified Diff String>', {
drawFileList: true,
matching: 'lines',
outputFormat: 'side-by-side',
});
document.getElementById('destination-elem-id').innerHTML = diffHtml;
});
```
### Diff2Html NPM / Node.js Library
```js
const Diff2html = require('diff2html');
const diffJson = Diff2html.parse('<Unified Diff String>');
const diffHtml = Diff2html.html(diffJson, { drawFileList: true });
console.log(diffHtml);
```
### Diff2Html Examples
#### Example with Angular
- Typescript
```typescript
import * as Diff2Html from 'diff2html';
import { Component, OnInit } from '@angular/core';
export class AppDiffComponent implements OnInit {
outputHtml: string;
constructor() {
this.init();
}
ngOnInit() {}
init() {
let strInput =
'--- a/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n+++ b/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n@@ -1035,6 +1035,17 @@ func Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (\n \n // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n \n+func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {\n+\tr0, _, e1 := Syscall6(SYS_PSELECT6, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))\n+\tn = int(r0)\n+\tif e1 != 0 {\n+\t\terr = errnoErr(e1)\n+\t}\n+\treturn\n+}\n+\n+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n+\n func read(fd int, p []byte) (n int, err error) {\n \tvar _p0 unsafe.Pointer\n \tif len(p) > 0 {\n';
let outputHtml = Diff2Html.html(strInput, { drawFileList: true, matching: 'lines' });
this.outputHtml = outputHtml;
}
}
```
- HTML
```html
<!DOCTYPE html>
<html>
<head>
<title>diff2html</title>
</head>
<body>
<div [innerHtml]="outputHtml"></div>
</body>
</html>
```
- `.angular-cli.json` - Add styles
```json
"styles": [
"diff2html.min.css"
]
```
#### Example with Vue.js
```vue
<template>
<div v-html="prettyHtml" />
</template>
<script>
import * as Diff2Html from 'diff2html';
import 'diff2html/bundles/css/diff2html.min.css';
export default {
data() {
return {
diffs:
'--- a/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n+++ b/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n@@ -1035,6 +1035,17 @@ func Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (\n \n // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n \n+func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {\n+\tr0, _, e1 := Syscall6(SYS_PSELECT6, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))\n+\tn = int(r0)\n+\tif e1 != 0 {\n+\t\terr = errnoErr(e1)\n+\t}\n+\treturn\n+}\n+\n+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n+\n func read(fd int, p []byte) (n int, err error) {\n \tvar _p0 unsafe.Pointer\n \tif len(p) > 0 {\n',
};
},
computed: {
prettyHtml() {
return Diff2Html.html(this.diffs, {
drawFileList: true,
matching: 'lines',
outputFormat: 'side-by-side',
});
},
},
};
</script>
```
## Troubleshooting ## Troubleshooting
### 1. Out of memory or Slow execution ### 1. Out of memory or Slow execution