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adding rich formatting to messags

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This commit is contained in:
or-else
2017-08-19 20:40:25 -07:00
parent fd8c58e837
commit 0c7549819a
3 changed files with 56 additions and 36 deletions
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drafty.js
+33 -32
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@@ -29,7 +29,7 @@ Sample JSON representation of the text above:
{
"at":8,
"len":4,
"tp":"BO"
"tp":"ST"
},
{
"at":14,
@@ -39,12 +39,12 @@ Sample JSON representation of the text above:
{
"at":20,
"len":6,
"tp":"IT"
"tp":"EM"
},
{
"at":31,
"len":7,
"tp":"ST"
"tp":"DL"
}
]
},
@@ -54,12 +54,12 @@ Sample JSON representation of the text above:
{
"at":25,
"len":11,
"tp":"IT"
"tp":"EM"
},
{
"at":15,
"len":21,
"tp":"BO"
"tp":"ST"
}
]
},
@@ -69,7 +69,7 @@ Sample JSON representation of the text above:
{
"at":73,
"len":13,
"tp":"BO"
"tp":"ST"
}
],
"ent":[
@@ -106,7 +106,7 @@ Sample JSON representation of the text above:
{
"at":4,
"len":8,
"tp":"IT"
"tp":"EM"
}
],
"ent":[
@@ -153,12 +153,12 @@ Sample JSON representation of the text above:
// Regular expressions for parsing inline formats. Javascript does not support lookbehind,
// so it's a bit messy.
var INLINE_STYLES = [
// Bold, *bold text*
{name: "BO", start: /(?:^|\W)(\*)[^\s*]/, end: /[^\s*](\*)(?=$|\W)/},
// Italic, _italic text_
{name: "IT", start: /(?:^|[\W_])(_)[^\s_]/, end: /[^\s_](_)(?=$|[\W_])/},
// Strikethough, ~strike this though~
{name: "ST", start: /(?:^|\W)(~)[^\s~]/g, end: /[^\s~](~)(?=$|\W)/},
// Strong = bold, *bold text*
{name: "ST", start: /(?:^|\W)(\*)[^\s*]/, end: /[^\s*](\*)(?=$|\W)/},
// Emphesized = italic, _italic text_
{name: "EM", start: /(?:^|[\W_])(_)[^\s_]/, end: /[^\s_](_)(?=$|[\W_])/},
// Deleted, ~strike this though~
{name: "DL", start: /(?:^|\W)(~)[^\s~]/g, end: /[^\s~](~)(?=$|\W)/},
// Code block `this is monospace`
{name: "CO", start: /(?:^|\W)(`)[^`]/, end: /[^`](`)(?=$|\W)/}
];
@@ -168,7 +168,7 @@ Sample JSON representation of the text above:
// URLs
{name: "LN", dataName: "url",
pack: function(val) {
// Check if the protocol is pecified, if not use http
// Check if the protocol is specified, if not use http
if (!/^[a-z]+:\/\//i.test(val)) {
val = 'http://' + val;
}
@@ -182,14 +182,14 @@ Sample JSON representation of the text above:
// Hashtags #hashtag
{name: "HT", dataName: "val",
pack: function(val) { return {val: val.slice(1)}; },
re: /\B#(\w\w+)/g}
re: /\b#(\w\w+)/g}
];
// Formatting HTML tags
var STYLE_DECOR = {
BO: ['<b>', '</b>'],
IT: ['<i>', '</i>'],
ST: ['<del>', '</del>'],
ST: ['<b>', '</b>'],
EM: ['<i>', '</i>'],
DL: ['<del>', '</del>'],
CO: ['<tt>', '</tt>']
};
@@ -253,7 +253,7 @@ Sample JSON representation of the text above:
}
// Detect starts and ends of formatting spans. Unformatted spans are
// ignored at this time.
// ignored at this stage.
function spannify(original, re_start, re_end, type) {
var result = [];
var index = 0;
@@ -269,8 +269,8 @@ Sample JSON representation of the text above:
if (start == null) {
break;
}
// Because javascript RegExp does not support lookbehind, the actual offset may not be at the beginning of
// the match. Find it in the matched string.
// Because javascript RegExp does not support lookbehind, the actual offset may not point
// at the markup character. Find it in the matched string.
var start_offset = start['index'] + start[0].lastIndexOf(start[1]);
// Clip the processed part of the string.
line = line.slice(start_offset + 1);
@@ -337,11 +337,11 @@ Sample JSON representation of the text above:
}
// Get a list of entities from a text.
function extractEntities(line, re, name) {
function extractEntities(line) {
var match;
var extracted = [];
ENTITY_TYPES.map(function(ent) {
while((match = ent.re.exec(line)) !== null) {
while ((match = ent.re.exec(line)) !== null) {
extracted.push({
offset: match['index'],
len: match[0].length,
@@ -371,13 +371,13 @@ Sample JSON representation of the text above:
}
// Convert the chunks into format suitable for serialization.
function toDrafty(chunks, startAt) {
function draftify(chunks, startAt) {
var plain = "";
var ranges = [];
for (var i in chunks) {
var chunk = chunks[i];
if (!chunk.text) {
var drafty = toDrafty(chunk.children, plain.length + startAt);
var drafty = draftify(chunk.children, plain.length + startAt);
chunk.text = drafty.txt;
ranges = ranges.concat(drafty.fmt);
}
@@ -401,8 +401,8 @@ Sample JSON representation of the text above:
* Parse text into structured representation.
*/
parse: function(content) {
// Split text into lines. It makes formatting easier
var lines = content.split('\n');
// Split text into lines. It makes further processing easier.
var lines = content.split(/\r?\n/);
// Holds formatted lines
var blocks = [];
// Holds entities referenced from text
@@ -432,10 +432,11 @@ Sample JSON representation of the text above:
// Convert an array of possibly overlapping spans into a tree
spans = toTree(spans);
// Build tree representation of the format.
// Build a tree representation of the entire string, not
// just the formatted parts.
var chunks = chunkify(line, 0, line.length, spans);
var drafty = toDrafty(chunks, 0);
var drafty = draftify(chunks, 0);
block = {txt: drafty.txt, fmt: drafty.fmt};
}
@@ -475,7 +476,7 @@ Sample JSON representation of the text above:
var {blocks} = content;
var {refs} = content;
var text = "";
var text = [];
for (var i in blocks) {
var line = blocks[i].txt;
var markup = [];
@@ -505,9 +506,9 @@ Sample JSON representation of the text above:
line = splice(line, markup[j].idx, markup[j].what);
}
}
text += line + "<br>";
text.push(line);
}
return text;
return text.join("<br/>");
},
/*