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インラインのコードでもシンタックスハイライトを有効化

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This commit is contained in:
syuilo 2017-02-12 02:38:47 +09:00
parent 7cf914f2d2
commit bbd11164ef
5 changed files with 382 additions and 378 deletions
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331
src/common/text/core/syntax-highlighter.js Normal file
View File

@ -0,0 +1,331 @@
function escape(text) {
return text
.replace(/>/g, '>')
.replace(/</g, '&lt;');
}
// 文字数が多い順にソートします
// そうしないと、「function」という文字列が与えられたときに「func」が先にマッチしてしまう可能性があるためです
const _keywords = [
'true',
'false',
'null',
'nil',
'undefined',
'void',
'var',
'const',
'let',
'mut',
'dim',
'if',
'then',
'else',
'switch',
'match',
'case',
'default',
'for',
'each',
'in',
'while',
'loop',
'continue',
'break',
'do',
'goto',
'next',
'end',
'sub',
'throw',
'try',
'catch',
'finally',
'enum',
'delegate',
'function',
'func',
'fun',
'fn',
'return',
'yield',
'async',
'await',
'require',
'include',
'import',
'imports',
'export',
'exports',
'from',
'as',
'using',
'use',
'internal',
'module',
'namespace',
'where',
'select',
'struct',
'union',
'new',
'delete',
'this',
'super',
'base',
'class',
'interface',
'abstract',
'static',
'public',
'private',
'protected',
'virtual',
'partial',
'override',
'extends',
'implements',
'constructor'
];
const keywords = _keywords
.concat(_keywords.map(k => k[0].toUpperCase() + k.substr(1)))
.concat(_keywords.map(k => k.toUpperCase()))
.sort((a, b) => b.length - a.length);
const symbols = [
'=',
'+',
'-',
'*',
'/',
'%',
'~',
'^',
'&',
'|',
'>',
'<',
'!',
'?'
];
const elements = [
// comment
code => {
if (code.substr(0, 2) != '//') return null;
const match = code.match(/^\/\/(.+?)\n/);
if (!match) return null;
const comment = match[0];
return {
html: `<span class="comment">${escape(comment)}</span>`,
next: comment.length
};
},
// block comment
code => {
const match = code.match(/^\/\*([\s\S]+?)\*\//);
if (!match) return null;
return {
html: `<span class="comment">${escape(match[0])}</span>`,
next: match[0].length
};
},
// string
code => {
if (!/^['"`]/.test(code)) return null;
const begin = code[0];
let str = begin;
let thisIsNotAString = false;
for (let i = 1; i < code.length; i++) {
const char = code[i];
if (char == '\\') {
str += char;
str += code[i + 1] || '';
i++;
continue;
} else if (char == begin) {
str += char;
break;
} else if (char == '\n' || i == (code.length - 1)) {
thisIsNotAString = true;
break;
} else {
str += char;
}
}
if (thisIsNotAString) {
return null;
} else {
return {
html: `<span class="string">${escape(str)}</span>`,
next: str.length
};
}
},
// regexp
code => {
if (code[0] != '/') return null;
let regexp = '';
let thisIsNotARegexp = false;
for (let i = 1; i < code.length; i++) {
const char = code[i];
if (char == '\\') {
regexp += char;
regexp += code[i + 1] || '';
i++;
continue;
} else if (char == '/') {
break;
} else if (char == '\n' || i == (code.length - 1)) {
thisIsNotARegexp = true;
break;
} else {
regexp += char;
}
}
if (thisIsNotARegexp) return null;
if (regexp[0] == ' ' && regexp[regexp.length - 1] == ' ') return null;
return {
html: `<span class="regexp">/${escape(regexp)}/</span>`,
next: regexp.length + 2
};
},
// label
code => {
if (code[0] != '@') return null;
const match = code.match(/^@([a-zA-Z_-]+?)\n/);
if (!match) return null;
const label = match[0];
return {
html: `<span class="label">${label}</span>`,
next: label.length
};
},
// number
(code, i, source) => {
const prev = source[i - 1];
if (prev && /[a-zA-Z]/.test(prev)) return null;
if (!/^[\-\+]?[0-9\.]+/.test(code)) return null;
const match = code.match(/^[\-\+]?[0-9\.]+/)[0];
if (match) {
return {
html: `<span class="number">${match}</span>`,
next: match.length
};
} else {
return null;
}
},
// nan
(code, i, source) => {
const prev = source[i - 1];
if (prev && /[a-zA-Z]/.test(prev)) return null;
if (code.substr(0, 3) == 'NaN') {
return {
html: `<span class="nan">NaN</span>`,
next: 3
};
} else {
return null;
}
},
// method
code => {
const match = code.match(/^([a-zA-Z_-]+?)\(/);
if (!match) return null;
if (match[1] == '-') return null;
return {
html: `<span class="method">${match[1]}</span>`,
next: match[1].length
};
},
// property
(code, i, source) => {
const prev = source[i - 1];
if (prev != '.') return null;
const match = code.match(/^[a-zA-Z0-9_-]+/);
if (!match) return null;
return {
html: `<span class="property">${match[0]}</span>`,
next: match[0].length
};
},
// keyword
(code, i, source) => {
const prev = source[i - 1];
if (prev && /[a-zA-Z]/.test(prev)) return null;
const match = keywords.filter(k => code.substr(0, k.length) == k)[0];
if (match) {
if (/^[a-zA-Z]/.test(code.substr(match.length))) return null;
return {
html: `<span class="keyword ${match}">${match}</span>`,
next: match.length
};
} else {
return null;
}
},
// symbol
code => {
const match = symbols.filter(s => code[0] == s)[0];
if (match) {
return {
html: `<span class="symbol">${match}</span>`,
next: 1
};
} else {
return null;
}
}
];
// specify lang is todo
module.exports = (source, lang) => {
let code = source;
let html = '';
let i = 0;
function push(token) {
html += token.html;
code = code.substr(token.next);
i += token.next;
}
while (code != '') {
const parsed = elements.some(el => {
const e = el(code, i, source);
if (e) {
push(e);
return true;
}
});
if (!parsed) {
push({
html: escape(code[0]),
next: 1
});
}
}
return html;
};

338
src/common/text/elements/code.js
View File

@ -1,7 +1,9 @@
/**
* Code
* Code (block)
*/
const genHtml = require('../core/syntax-highlighter');
module.exports = text => {
const match = text.match(/^```([\s\S]+?)```/);
if (!match) return null;
@ -10,338 +12,6 @@ module.exports = text => {
type: 'code',
content: code,
code: code.substr(3, code.length - 6).trim(),
codeHtml: genHtml(code.substr(3, code.length - 6).trim())
html: genHtml(code.substr(3, code.length - 6).trim())
};
};
function escape(text) {
return text
.replace(/>/g, '&gt;')
.replace(/</g, '&lt;');
}
// 文字数が多い順にソートします
// そうしないと、「function」という文字列が与えられたときに「func」が先にマッチしてしまう可能性があるためです
const _keywords = [
'true',
'false',
'null',
'nil',
'undefined',
'void',
'var',
'const',
'let',
'mut',
'dim',
'if',
'then',
'else',
'switch',
'match',
'case',
'default',
'for',
'each',
'in',
'while',
'loop',
'continue',
'break',
'do',
'goto',
'next',
'end',
'sub',
'throw',
'try',
'catch',
'finally',
'enum',
'delegate',
'function',
'func',
'fun',
'fn',
'return',
'yield',
'async',
'await',
'require',
'include',
'import',
'imports',
'export',
'exports',
'from',
'as',
'using',
'use',
'internal',
'module',
'namespace',
'where',
'select',
'struct',
'union',
'new',
'delete',
'this',
'super',
'base',
'class',
'interface',
'abstract',
'static',
'public',
'private',
'protected',
'virtual',
'partial',
'override',
'extends',
'implements',
'constructor'
];
const keywords = _keywords
.concat(_keywords.map(k => k[0].toUpperCase() + k.substr(1)))
.concat(_keywords.map(k => k.toUpperCase()))
.sort((a, b) => b.length - a.length);
const symbols = [
'=',
'+',
'-',
'*',
'/',
'%',
'~',
'^',
'&',
'|',
'>',
'<',
'!',
'?'
];
const elements = [
// comment
code => {
if (code.substr(0, 2) != '//') return null;
const match = code.match(/^\/\/(.+?)\n/);
if (!match) return null;
const comment = match[0];
return {
html: `<span class="comment">${escape(comment)}</span>`,
next: comment.length
};
},
// block comment
code => {
const match = code.match(/^\/\*([\s\S]+?)\*\//);
if (!match) return null;
return {
html: `<span class="comment">${escape(match[0])}</span>`,
next: match[0].length
};
},
// string
code => {
if (!/^['"`]/.test(code)) return null;
const begin = code[0];
let str = begin;
let thisIsNotAString = false;
for (let i = 1; i < code.length; i++) {
const char = code[i];
if (char == '\\') {
str += char;
str += code[i + 1] || '';
i++;
continue;
} else if (char == begin) {
str += char;
break;
} else if (char == '\n' || i == (code.length - 1)) {
thisIsNotAString = true;
break;
} else {
str += char;
}
}
if (thisIsNotAString) {
return null;
} else {
return {
html: `<span class="string">${escape(str)}</span>`,
next: str.length
};
}
},
// regexp
code => {
if (code[0] != '/') return null;
let regexp = '';
let thisIsNotARegexp = false;
for (let i = 1; i < code.length; i++) {
const char = code[i];
if (char == '\\') {
regexp += char;
regexp += code[i + 1] || '';
i++;
continue;
} else if (char == '/') {
break;
} else if (char == '\n' || i == (code.length - 1)) {
thisIsNotARegexp = true;
break;
} else {
regexp += char;
}
}
if (thisIsNotARegexp) return null;
if (regexp[0] == ' ' && regexp[regexp.length - 1] == ' ') return null;
return {
html: `<span class="regexp">/${escape(regexp)}/</span>`,
next: regexp.length + 2
};
},
// label
code => {
if (code[0] != '@') return null;
const match = code.match(/^@([a-zA-Z_-]+?)\n/);
if (!match) return null;
const label = match[0];
return {
html: `<span class="label">${label}</span>`,
next: label.length
};
},
// number
(code, i, source) => {
const prev = source[i - 1];
if (prev && /[a-zA-Z]/.test(prev)) return null;
if (!/^[\-\+]?[0-9\.]+/.test(code)) return null;
const match = code.match(/^[\-\+]?[0-9\.]+/)[0];
if (match) {
return {
html: `<span class="number">${match}</span>`,
next: match.length
};
} else {
return null;
}
},
// nan
(code, i, source) => {
const prev = source[i - 1];
if (prev && /[a-zA-Z]/.test(prev)) return null;
if (code.substr(0, 3) == 'NaN') {
return {
html: `<span class="nan">NaN</span>`,
next: 3
};
} else {
return null;
}
},
// method
code => {
const match = code.match(/^([a-zA-Z_-]+?)\(/);
if (!match) return null;
if (match[1] == '-') return null;
return {
html: `<span class="method">${match[1]}</span>`,
next: match[1].length
};
},
// property
(code, i, source) => {
const prev = source[i - 1];
if (prev != '.') return null;
const match = code.match(/^[a-zA-Z0-9_-]+/);
if (!match) return null;
return {
html: `<span class="property">${match[0]}</span>`,
next: match[0].length
};
},
// keyword
(code, i, source) => {
const prev = source[i - 1];
if (prev && /[a-zA-Z]/.test(prev)) return null;
const match = keywords.filter(k => code.substr(0, k.length) == k)[0];
if (match) {
if (/^[a-zA-Z]/.test(code.substr(match.length))) return null;
return {
html: `<span class="keyword ${match}">${match}</span>`,
next: match.length
};
} else {
return null;
}
},
// symbol
code => {
const match = symbols.filter(s => code[0] == s)[0];
if (match) {
return {
html: `<span class="symbol">${match}</span>`,
next: 1
};
} else {
return null;
}
}
];
// specify lang is todo
function genHtml(source, lang) {
let code = source;
let html = '';
let i = 0;
function push(token) {
html += token.html;
code = code.substr(token.next);
i += token.next;
}
while (code != '') {
const parsed = elements.some(el => {
const e = el(code, i, source);
if (e) {
push(e);
return true;
}
});
if (!parsed) {
push({
html: escape(code[0]),
next: 1
});
}
}
return html;
}

5
src/common/text/elements/inline-code.js
View File

@ -2,6 +2,8 @@
* Code (inline)
*/
const genHtml = require('../core/syntax-highlighter');
module.exports = text => {
const match = text.match(/^`(.+?)`/);
if (!match) return null;
@ -9,6 +11,7 @@ module.exports = text => {
return {
type: 'inline-code',
content: code,
code: code.substr(1, code.length - 2).trim()
code: code.substr(1, code.length - 2).trim(),
html: genHtml(code.substr(1, code.length - 2).trim())
};
};

16
src/web/app/base.styl
View File

@ -110,14 +110,6 @@ a
code
font-family Consolas, 'Courier New', Courier, Monaco, monospace
pre
display block
> code
display block
overflow auto
tab-size 2
.comment
opacity 0.5
@ -159,6 +151,14 @@ pre
.label
color #e9003f
pre
display block
> code
display block
overflow auto
tab-size 2
mk-locker
display block
position fixed

4
src/web/app/common/scripts/text-compiler.js
View File

@ -31,9 +31,9 @@ module.exports = function(tokens, shouldBreak, shouldEscape) {
case 'hashtag': // TODO
return '<a>' + escape(token.content) + '</a>';
case 'code':
return '<pre><code>' + token.codeHtml + '</code></pre>';
return '<pre><code>' + token.html + '</code></pre>';
case 'inline-code':
return '<code>' + escape(token.code) + '</code>';
return '<code>' + token.html + '</code>';
}
}).join('');