上传文件至 drpy_libs

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rghy 2024-08-04 05:39:10 +08:00
parent 7001546bc5
commit 0ea805c258
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/*!
* Jinja Templating for JavaScript v0.1.8
* https://github.com/sstur/jinja-js
*
* This is a slimmed-down Jinja2 implementation [http://jinja.pocoo.org/]
*
* In the interest of simplicity, it deviates from Jinja2 as follows:
* - Line statements, cycle, super, macro tags and block nesting are not implemented
* - auto escapes html by default (the filter is "html" not "e")
* - Only "html" and "safe" filters are built in
* - Filters are not valid in expressions; `foo|length > 1` is not valid
* - Expression Tests (`if num is odd`) not implemented (`is` translates to `==` and `isnot` to `!=`)
*
* Notes:
* - if property is not found, but method '_get' exists, it will be called with the property name (and cached)
* - `{% for n in obj %}` iterates the object's keys; get the value with `{% for n in obj %}{{ obj[n] }}{% endfor %}`
* - subscript notation `a[0]` takes literals or simple variables but not `a[item.key]`
* - `.2` is not a valid number literal; use `0.2`
*
*/
/*global require, exports, module, define */
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.jinja = {}));
})(this, (function (jinja) {
"use strict";
var STRINGS = /'(\\.|[^'])*'|"(\\.|[^"'"])*"/g;
var IDENTS_AND_NUMS = /([$_a-z][$\w]*)|([+-]?\d+(\.\d+)?)/g;
var NUMBER = /^[+-]?\d+(\.\d+)?$/;
//non-primitive literals (array and object literals)
var NON_PRIMITIVES = /\[[@#~](,[@#~])*\]|\[\]|\{([@i]:[@#~])(,[@i]:[@#~])*\}|\{\}/g;
//bare identifiers such as variables and in object literals: {foo: 'value'}
var IDENTIFIERS = /[$_a-z][$\w]*/ig;
var VARIABLES = /i(\.i|\[[@#i]\])*/g;
var ACCESSOR = /(\.i|\[[@#i]\])/g;
var OPERATORS = /(===?|!==?|>=?|<=?|&&|\|\||[+\-\*\/%])/g;
//extended (english) operators
var EOPS = /(^|[^$\w])(and|or|not|is|isnot)([^$\w]|$)/g;
var LEADING_SPACE = /^\s+/;
var TRAILING_SPACE = /\s+$/;
var START_TOKEN = /\{\{\{|\{\{|\{%|\{#/;
var TAGS = {
'{{{': /^('(\\.|[^'])*'|"(\\.|[^"'"])*"|.)+?\}\}\}/,
'{{': /^('(\\.|[^'])*'|"(\\.|[^"'"])*"|.)+?\}\}/,
'{%': /^('(\\.|[^'])*'|"(\\.|[^"'"])*"|.)+?%\}/,
'{#': /^('(\\.|[^'])*'|"(\\.|[^"'"])*"|.)+?#\}/
};
var delimeters = {
'{%': 'directive',
'{{': 'output',
'{#': 'comment'
};
var operators = {
and: '&&',
or: '||',
not: '!',
is: '==',
isnot: '!='
};
var constants = {
'true': true,
'false': false,
'null': null
};
function Parser() {
this.nest = [];
this.compiled = [];
this.childBlocks = 0;
this.parentBlocks = 0;
this.isSilent = false;
}
Parser.prototype.push = function (line) {
if (!this.isSilent) {
this.compiled.push(line);
}
};
Parser.prototype.parse = function (src) {
this.tokenize(src);
return this.compiled;
};
Parser.prototype.tokenize = function (src) {
var lastEnd = 0, parser = this, trimLeading = false;
matchAll(src, START_TOKEN, function (open, index, src) {
//here we match the rest of the src against a regex for this tag
var match = src.slice(index + open.length).match(TAGS[open]);
match = (match ? match[0] : '');
//here we sub out strings so we don't get false matches
var simplified = match.replace(STRINGS, '@');
//if we don't have a close tag or there is a nested open tag
if (!match || ~simplified.indexOf(open)) {
return index + 1;
}
var inner = match.slice(0, 0 - open.length);
//check for white-space collapse syntax
if (inner.charAt(0) === '-') var wsCollapseLeft = true;
if (inner.slice(-1) === '-') var wsCollapseRight = true;
inner = inner.replace(/^-|-$/g, '').trim();
//if we're in raw mode and we are not looking at an "endraw" tag, move along
if (parser.rawMode && (open + inner) !== '{%endraw') {
return index + 1;
}
var text = src.slice(lastEnd, index);
lastEnd = index + open.length + match.length;
if (trimLeading) text = trimLeft(text);
if (wsCollapseLeft) text = trimRight(text);
if (wsCollapseRight) trimLeading = true;
if (open === '{{{') {
//liquid-style: make {{{x}}} => {{x|safe}}
open = '{{';
inner += '|safe';
}
parser.textHandler(text);
parser.tokenHandler(open, inner);
});
var text = src.slice(lastEnd);
if (trimLeading) text = trimLeft(text);
this.textHandler(text);
};
Parser.prototype.textHandler = function (text) {
this.push('write(' + JSON.stringify(text) + ');');
};
Parser.prototype.tokenHandler = function (open, inner) {
var type = delimeters[open];
if (type === 'directive') {
this.compileTag(inner);
} else if (type === 'output') {
var extracted = this.extractEnt(inner, STRINGS, '@');
//replace || operators with ~
extracted.src = extracted.src.replace(/\|\|/g, '~').split('|');
//put back || operators
extracted.src = extracted.src.map(function (part) {
return part.split('~').join('||');
});
var parts = this.injectEnt(extracted, '@');
if (parts.length > 1) {
var filters = parts.slice(1).map(this.parseFilter.bind(this));
this.push('filter(' + this.parseExpr(parts[0]) + ',' + filters.join(',') + ');');
} else {
this.push('filter(' + this.parseExpr(parts[0]) + ');');
}
}
};
Parser.prototype.compileTag = function (str) {
var directive = str.split(' ')[0];
var handler = tagHandlers[directive];
if (!handler) {
throw new Error('Invalid tag: ' + str);
}
handler.call(this, str.slice(directive.length).trim());
};
Parser.prototype.parseFilter = function (src) {
src = src.trim();
var match = src.match(/[:(]/);
var i = match ? match.index : -1;
if (i < 0) return JSON.stringify([src]);
var name = src.slice(0, i);
var args = src.charAt(i) === ':' ? src.slice(i + 1) : src.slice(i + 1, -1);
args = this.parseExpr(args, {terms: true});
return '[' + JSON.stringify(name) + ',' + args + ']';
};
Parser.prototype.extractEnt = function (src, regex, placeholder) {
var subs = [], isFunc = typeof placeholder == 'function';
src = src.replace(regex, function (str) {
var replacement = isFunc ? placeholder(str) : placeholder;
if (replacement) {
subs.push(str);
return replacement;
}
return str;
});
return {src: src, subs: subs};
};
Parser.prototype.injectEnt = function (extracted, placeholder) {
var src = extracted.src, subs = extracted.subs, isArr = Array.isArray(src);
var arr = (isArr) ? src : [src];
var re = new RegExp('[' + placeholder + ']', 'g'), i = 0;
arr.forEach(function (src, index) {
arr[index] = src.replace(re, function () {
return subs[i++];
});
});
return isArr ? arr : arr[0];
};
//replace complex literals without mistaking subscript notation with array literals
Parser.prototype.replaceComplex = function (s) {
var parsed = this.extractEnt(s, /i(\.i|\[[@#i]\])+/g, 'v');
parsed.src = parsed.src.replace(NON_PRIMITIVES, '~');
return this.injectEnt(parsed, 'v');
};
//parse expression containing literals (including objects/arrays) and variables (including dot and subscript notation)
//valid expressions: `a + 1 > b.c or c == null`, `a and b[1] != c`, `(a < b) or (c < d and e)`, 'a || [1]`
Parser.prototype.parseExpr = function (src, opts) {
opts = opts || {};
//extract string literals -> @
var parsed1 = this.extractEnt(src, STRINGS, '@');
//note: this will catch {not: 1} and a.is; could we replace temporarily and then check adjacent chars?
parsed1.src = parsed1.src.replace(EOPS, function (s, before, op, after) {
return (op in operators) ? before + operators[op] + after : s;
});
//sub out non-string literals (numbers/true/false/null) -> #
// the distinction is necessary because @ can be object identifiers, # cannot
var parsed2 = this.extractEnt(parsed1.src, IDENTS_AND_NUMS, function (s) {
return (s in constants || NUMBER.test(s)) ? '#' : null;
});
//sub out object/variable identifiers -> i
var parsed3 = this.extractEnt(parsed2.src, IDENTIFIERS, 'i');
//remove white-space
parsed3.src = parsed3.src.replace(/\s+/g, '');
//the rest of this is simply to boil the expression down and check validity
var simplified = parsed3.src;
//sub out complex literals (objects/arrays) -> ~
// the distinction is necessary because @ and # can be subscripts but ~ cannot
while (simplified !== (simplified = this.replaceComplex(simplified))) ;
//now @ represents strings, # represents other primitives and ~ represents non-primitives
//replace complex variables (those with dot/subscript accessors) -> v
while (simplified !== (simplified = simplified.replace(/i(\.i|\[[@#i]\])+/, 'v'))) ;
//empty subscript or complex variables in subscript, are not permitted
simplified = simplified.replace(/[iv]\[v?\]/g, 'x');
//sub in "i" for @ and # and ~ and v (now "i" represents all literals, variables and identifiers)
simplified = simplified.replace(/[@#~v]/g, 'i');
//sub out operators
simplified = simplified.replace(OPERATORS, '%');
//allow 'not' unary operator
simplified = simplified.replace(/!+[i]/g, 'i');
var terms = opts.terms ? simplified.split(',') : [simplified];
terms.forEach(function (term) {
//simplify logical grouping
while (term !== (term = term.replace(/\(i(%i)*\)/g, 'i'))) ;
if (!term.match(/^i(%i)*/)) {
throw new Error('Invalid expression: ' + src + " " + term);
}
});
parsed3.src = parsed3.src.replace(VARIABLES, this.parseVar.bind(this));
parsed2.src = this.injectEnt(parsed3, 'i');
parsed1.src = this.injectEnt(parsed2, '#');
return this.injectEnt(parsed1, '@');
};
Parser.prototype.parseVar = function (src) {
var args = Array.prototype.slice.call(arguments);
var str = args.pop(), index = args.pop();
//quote bare object identifiers (might be a reserved word like {while: 1})
if (src === 'i' && str.charAt(index + 1) === ':') {
return '"i"';
}
var parts = ['"i"'];
src.replace(ACCESSOR, function (part) {
if (part === '.i') {
parts.push('"i"');
} else if (part === '[i]') {
parts.push('get("i")');
} else {
parts.push(part.slice(1, -1));
}
});
return 'get(' + parts.join(',') + ')';
};
//escapes a name to be used as a javascript identifier
Parser.prototype.escName = function (str) {
return str.replace(/\W/g, function (s) {
return '$' + s.charCodeAt(0).toString(16);
});
};
Parser.prototype.parseQuoted = function (str) {
if (str.charAt(0) === "'") {
str = str.slice(1, -1).replace(/\\.|"/, function (s) {
if (s === "\\'") return "'";
return s.charAt(0) === '\\' ? s : ('\\' + s);
});
str = '"' + str + '"';
}
//todo: try/catch or deal with invalid characters (linebreaks, control characters)
return JSON.parse(str);
};
//the context 'this' inside tagHandlers is the parser instance
var tagHandlers = {
'if': function (expr) {
this.push('if (' + this.parseExpr(expr) + ') {');
this.nest.unshift('if');
},
'else': function () {
if (this.nest[0] === 'for') {
this.push('}, function() {');
} else {
this.push('} else {');
}
},
'elseif': function (expr) {
this.push('} else if (' + this.parseExpr(expr) + ') {');
},
'endif': function () {
this.nest.shift();
this.push('}');
},
'for': function (str) {
var i = str.indexOf(' in ');
var name = str.slice(0, i).trim();
var expr = str.slice(i + 4).trim();
this.push('each(' + this.parseExpr(expr) + ',' + JSON.stringify(name) + ',function() {');
this.nest.unshift('for');
},
'endfor': function () {
this.nest.shift();
this.push('});');
},
'raw': function () {
this.rawMode = true;
},
'endraw': function () {
this.rawMode = false;
},
'set': function (stmt) {
var i = stmt.indexOf('=');
var name = stmt.slice(0, i).trim();
var expr = stmt.slice(i + 1).trim();
this.push('set(' + JSON.stringify(name) + ',' + this.parseExpr(expr) + ');');
},
'block': function (name) {
if (this.isParent) {
++this.parentBlocks;
var blockName = 'block_' + (this.escName(name) || this.parentBlocks);
this.push('block(typeof ' + blockName + ' == "function" ? ' + blockName + ' : function() {');
} else if (this.hasParent) {
this.isSilent = false;
++this.childBlocks;
blockName = 'block_' + (this.escName(name) || this.childBlocks);
this.push('function ' + blockName + '() {');
}
this.nest.unshift('block');
},
'endblock': function () {
this.nest.shift();
if (this.isParent) {
this.push('});');
} else if (this.hasParent) {
this.push('}');
this.isSilent = true;
}
},
'extends': function (name) {
name = this.parseQuoted(name);
var parentSrc = this.readTemplateFile(name);
this.isParent = true;
this.tokenize(parentSrc);
this.isParent = false;
this.hasParent = true;
//silence output until we enter a child block
this.isSilent = true;
},
'include': function (name) {
name = this.parseQuoted(name);
var incSrc = this.readTemplateFile(name);
this.isInclude = true;
this.tokenize(incSrc);
this.isInclude = false;
}
};
//liquid style
tagHandlers.assign = tagHandlers.set;
//python/django style
tagHandlers.elif = tagHandlers.elseif;
var getRuntime = function runtime(data, opts) {
var defaults = {autoEscape: 'toJson'};
var _toString = Object.prototype.toString;
var _hasOwnProperty = Object.prototype.hasOwnProperty;
var getKeys = Object.keys || function (obj) {
var keys = [];
for (var n in obj) if (_hasOwnProperty.call(obj, n)) keys.push(n);
return keys;
};
var isArray = Array.isArray || function (obj) {
return _toString.call(obj) === '[object Array]';
};
var create = Object.create || function (obj) {
function F() {
}
F.prototype = obj;
return new F();
};
var toString = function (val) {
if (val == null) return '';
return (typeof val.toString == 'function') ? val.toString() : _toString.call(val);
};
var extend = function (dest, src) {
var keys = getKeys(src);
for (var i = 0, len = keys.length; i < len; i++) {
var key = keys[i];
dest[key] = src[key];
}
return dest;
};
//get a value, lexically, starting in current context; a.b -> get("a","b")
var get = function () {
var val, n = arguments[0], c = stack.length;
while (c--) {
val = stack[c][n];
if (typeof val != 'undefined') break;
}
for (var i = 1, len = arguments.length; i < len; i++) {
if (val == null) continue;
n = arguments[i];
val = (_hasOwnProperty.call(val, n)) ? val[n] : (typeof val._get == 'function' ? (val[n] = val._get(n)) : null);
}
return (val == null) ? '' : val;
};
var set = function (n, val) {
stack[stack.length - 1][n] = val;
};
var push = function (ctx) {
stack.push(ctx || {});
};
var pop = function () {
stack.pop();
};
var write = function (str) {
output.push(str);
};
var filter = function (val) {
for (var i = 1, len = arguments.length; i < len; i++) {
var arr = arguments[i], name = arr[0], filter = filters[name];
if (filter) {
arr[0] = val;
//now arr looks like [val, arg1, arg2]
val = filter.apply(data, arr);
} else {
throw new Error('Invalid filter: ' + name);
}
}
if (opts.autoEscape && name !== opts.autoEscape && name !== 'safe') {
//auto escape if not explicitly safe or already escaped
val = filters[opts.autoEscape].call(data, val);
}
output.push(val);
};
var each = function (obj, loopvar, fn1, fn2) {
if (obj == null) return;
var arr = isArray(obj) ? obj : getKeys(obj), len = arr.length;
var ctx = {loop: {length: len, first: arr[0], last: arr[len - 1]}};
push(ctx);
for (var i = 0; i < len; i++) {
extend(ctx.loop, {index: i + 1, index0: i});
fn1(ctx[loopvar] = arr[i]);
}
if (len === 0 && fn2) fn2();
pop();
};
var block = function (fn) {
push();
fn();
pop();
};
var render = function () {
return output.join('');
};
data = data || {};
opts = extend(defaults, opts || {});
var filters = extend({
html: function (val) {
return toString(val)
.split('&').join('&amp;')
.split('<').join('&lt;')
.split('>').join('&gt;')
.split('"').join('&quot;');
},
safe: function (val) {
return val;
},
toJson: function (val) {
if (typeof val === 'object') {
return JSON.stringify(val);
}
return toString(val);
}
}, opts.filters || {});
var stack = [create(data || {})], output = [];
return {
get: get,
set: set,
push: push,
pop: pop,
write: write,
filter: filter,
each: each,
block: block,
render: render
};
};
var runtime;
jinja.compile = function (markup, opts) {
opts = opts || {};
var parser = new Parser();
parser.readTemplateFile = this.readTemplateFile;
var code = [];
code.push('function render($) {');
code.push('var get = $.get, set = $.set, push = $.push, pop = $.pop, write = $.write, filter = $.filter, each = $.each, block = $.block;');
code.push.apply(code, parser.parse(markup));
code.push('return $.render();');
code.push('}');
code = code.join('\n');
if (opts.runtime === false) {
var fn = new Function('data', 'options', 'return (' + code + ')(runtime(data, options))');
} else {
runtime = runtime || (runtime = getRuntime.toString());
fn = new Function('data', 'options', 'return (' + code + ')((' + runtime + ')(data, options))');
}
return {render: fn};
};
jinja.render = function (markup, data, opts) {
var tmpl = jinja.compile(markup);
return tmpl.render(data, opts);
};
jinja.templateFiles = [];
jinja.readTemplateFile = function (name) {
var templateFiles = this.templateFiles || [];
var templateFile = templateFiles[name];
if (templateFile == null) {
throw new Error('Template file not found: ' + name);
}
return templateFile;
};
/*!
* Helpers
*/
function trimLeft(str) {
return str.replace(LEADING_SPACE, '');
}
function trimRight(str) {
return str.replace(TRAILING_SPACE, '');
}
function matchAll(str, reg, fn) {
//copy as global
reg = new RegExp(reg.source, 'g' + (reg.ignoreCase ? 'i' : '') + (reg.multiline ? 'm' : ''));
var match;
while ((match = reg.exec(str))) {
var result = fn(match[0], match.index, str);
if (typeof result == 'number') {
reg.lastIndex = result;
}
}
}
}));