/
repl.js
167 lines (156 loc) · 5.24 KB
/
repl.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
// Generated by CoffeeScript 1.6.2
(function() {
var CoffeeScript, addHistory, addMultilineHandler, fs, merge, nodeREPL, path, prettyErrorMessage, replDefaults, vm, _ref;
fs = require('fs');
path = require('path');
vm = require('vm');
nodeREPL = require('repl');
CoffeeScript = require('./coffee-script');
_ref = require('./helpers'), merge = _ref.merge, prettyErrorMessage = _ref.prettyErrorMessage;
replDefaults = {
prompt: 'coffee> ',
historyFile: path.join(process.env.HOME, '.coffee_history'),
historyMaxInputSize: 10240,
"eval": function(input, context, filename, cb) {
var Assign, Block, Literal, Value, ast, err, js, _ref1;
input = input.replace(/\uFF00/g, '\n');
input = input.replace(/^\(([\s\S]*)\n\)$/m, '$1');
_ref1 = require('./nodes'), Block = _ref1.Block, Assign = _ref1.Assign, Value = _ref1.Value, Literal = _ref1.Literal;
try {
ast = CoffeeScript.nodes(input);
ast = new Block([new Assign(new Value(new Literal('_')), ast, '=')]);
js = ast.compile({
bare: true,
locals: Object.keys(context)
});
return cb(null, vm.runInContext(js, context, filename));
} catch (_error) {
err = _error;
return cb(prettyErrorMessage(err, filename, input, true));
}
}
};
addMultilineHandler = function(repl) {
var inputStream, multiline, nodeLineListener, outputStream, rli;
rli = repl.rli, inputStream = repl.inputStream, outputStream = repl.outputStream;
multiline = {
enabled: false,
initialPrompt: repl.prompt.replace(/^[^> ]*/, function(x) {
return x.replace(/./g, '-');
}),
prompt: repl.prompt.replace(/^[^> ]*>?/, function(x) {
return x.replace(/./g, '.');
}),
buffer: ''
};
nodeLineListener = rli.listeners('line')[0];
rli.removeListener('line', nodeLineListener);
rli.on('line', function(cmd) {
if (multiline.enabled) {
multiline.buffer += "" + cmd + "\n";
rli.setPrompt(multiline.prompt);
rli.prompt(true);
} else {
nodeLineListener(cmd);
}
});
return inputStream.on('keypress', function(char, key) {
if (!(key && key.ctrl && !key.meta && !key.shift && key.name === 'v')) {
return;
}
if (multiline.enabled) {
if (!multiline.buffer.match(/\n/)) {
multiline.enabled = !multiline.enabled;
rli.setPrompt(repl.prompt);
rli.prompt(true);
return;
}
if ((rli.line != null) && !rli.line.match(/^\s*$/)) {
return;
}
multiline.enabled = !multiline.enabled;
rli.line = '';
rli.cursor = 0;
rli.output.cursorTo(0);
rli.output.clearLine(1);
multiline.buffer = multiline.buffer.replace(/\n/g, '\uFF00');
rli.emit('line', multiline.buffer);
multiline.buffer = '';
} else {
multiline.enabled = !multiline.enabled;
rli.setPrompt(multiline.initialPrompt);
rli.prompt(true);
}
});
};
addHistory = function(repl, filename, maxSize) {
var buffer, fd, readFd, size, stat;
try {
stat = fs.statSync(filename);
size = Math.min(maxSize, stat.size);
readFd = fs.openSync(filename, 'r');
buffer = new Buffer(size);
fs.readSync(readFd, buffer, 0, size, stat.size - size);
repl.rli.history = buffer.toString().split('\n').reverse();
if (size === maxSize) {
repl.rli.history.pop();
}
if (repl.rli.history[0] === '') {
repl.rli.history.shift();
}
repl.rli.historyIndex = -1;
} catch (_error) {}
fd = fs.openSync(filename, 'a');
repl.rli.addListener('line', function(code) {
if (code && code.length && code !== '.history') {
return fs.write(fd, "" + code + "\n");
}
});
process.on('exit', function() {
return fs.closeSync(fd);
});
return repl.commands['.history'] = {
help: 'Show command history',
action: function() {
var history, k;
history = ((function() {
var _i, _len, _ref1, _results;
_ref1 = Object.keys(repl.rli.history);
_results = [];
for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
k = _ref1[_i];
_results.push(repl.rli.history[k]);
}
return _results;
})()).reverse();
repl.outputStream.write("" + (history.join('\n')) + "\n");
return repl.displayPrompt();
}
};
};
module.exports = {
start: function(opts) {
var build, major, minor, repl, _ref1;
if (opts == null) {
opts = {};
}
_ref1 = process.versions.node.split('.').map(function(n) {
return parseInt(n);
}), major = _ref1[0], minor = _ref1[1], build = _ref1[2];
if (major === 0 && minor < 8) {
console.warn("Node 0.8.0+ required for CoffeeScript REPL");
process.exit(1);
}
opts = merge(replDefaults, opts);
repl = nodeREPL.start(opts);
repl.on('exit', function() {
return repl.outputStream.write('\n');
});
addMultilineHandler(repl);
if (opts.historyFile) {
addHistory(repl, opts.historyFile, opts.historyMaxInputSize);
}
return repl;
}
};
}).call(this);