0.0.1-beta.0 • Published 1 year ago
fast-diff-wrapper v0.0.1-beta.0
Fast-diff-wrapper
This is an wrapper implementation of fast-diff(https://github.com/jhchen/fast-diff).
It provides additional functionalities
- Range information - provides range(start, end) information where texts are deleted in the paragraph.
Sample
1. html page
<html>
<head>
...
<script type="text/javascript" src="/fiast-diff-wrapper.umd.js"></script>
</head>
<body>
...
</body>
<script>
const cmd = ["-", " ", "+"]; // [delete, unchanged, insert]
window.onload = () => {
const diff = window["fast-diff-wrapper"];
/**
* PREV NEXT
* 0 ab 0 ABcd
* 1 cd 1 efGH
* 2 ef 2 XYZ!
*
*/
const prev = "abc\ndef\nhi";
const next = "AbcDef\nXYZ";
const table = diff.createDiffTable(prev, next);
table.eachLine((pair) => {
const { prev, next } = pair;
// 1. prev paragraph
console.log(
`PREV "${prev.paraText}" at [${prev.textOffset}, ${prev.length})`
);
// 2. ranges in a prev paragraph
prev.ranges.forEach((range) => {
const { type, start, end, text, linenum } = range;
console.log(
`[${
cmd[type + 1]
}] [${start}, ${end}) "${text}" at LINE: ${linenum}`
);
});
// 3. next paragraph
console.log(
`NEXT "${next.paraText}" at [${next.textOffset}, ${next.length})`
);
// 2. ranges in a next paragraph
next.ranges.forEach((range) => {
const { type, start, end, text, linenum } = range;
console.log(
`[${
cmd[type + 1]
}] [${start}, ${end}) "${text}" at LINE: ${linenum}`
);
});
});
};
</script>
</html>PREV "ab" at [0, 2)
[-] [0, 2) "ab" at LINE: 0
NEXT "ABcd" at [0, 4)
[+] [0, 2) "AB" at LINE: 0
PREV "cd" at [3, 2)
NEXT "ABcd" at [0, 4)
[+] [0, 2) "AB" at LINE: 0
PREV "ef" at [6, 2)
NEXT "efGH" at [5, 4)
[+] [2, 4) "GH" at LINE: 1
PREV "ef" at [6, 2)
NEXT "XYZ!" at [10, 4)
[+] [0, 4) "XYZ!" at LINE: 2