1 | #!/usr/bin/env node
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2 |
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3 |
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4 | 'use strict';
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5 |
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6 |
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7 |
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8 |
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9 |
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10 | var fs = require('fs');
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11 |
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12 |
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13 |
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14 | var argparse = require('argparse');
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15 |
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16 |
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17 |
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18 | var yaml = require('..');
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19 |
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20 |
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21 |
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22 |
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23 |
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24 | var cli = new argparse.ArgumentParser({
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25 | prog: 'js-yaml',
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26 | version: require('../package.json').version,
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27 | addHelp: true
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28 | });
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29 |
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30 |
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31 | cli.addArgument([ '-c', '--compact' ], {
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32 | help: 'Display errors in compact mode',
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33 | action: 'storeTrue'
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34 | });
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35 |
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36 |
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37 |
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38 |
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39 | cli.addArgument([ '-j', '--to-json' ], {
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40 | help: argparse.Const.SUPPRESS,
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41 | dest: 'json',
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42 | action: 'storeTrue'
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43 | });
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44 |
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45 |
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46 | cli.addArgument([ '-t', '--trace' ], {
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47 | help: 'Show stack trace on error',
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48 | action: 'storeTrue'
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49 | });
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50 |
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51 | cli.addArgument([ 'file' ], {
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52 | help: 'File to read, utf-8 encoded without BOM',
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53 | nargs: '?',
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54 | defaultValue: '-'
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55 | });
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56 |
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57 |
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58 |
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59 |
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60 |
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61 | var options = cli.parseArgs();
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62 |
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63 |
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64 |
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65 |
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66 | function readFile(filename, encoding, callback) {
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67 | if (options.file === '-') {
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68 |
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69 |
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70 | var chunks = [];
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71 |
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72 | process.stdin.on('data', function (chunk) {
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73 | chunks.push(chunk);
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74 | });
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75 |
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76 | process.stdin.on('end', function () {
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77 | return callback(null, Buffer.concat(chunks).toString(encoding));
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78 | });
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79 | } else {
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80 | fs.readFile(filename, encoding, callback);
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81 | }
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82 | }
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83 |
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84 | readFile(options.file, 'utf8', function (error, input) {
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85 | var output, isYaml;
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86 |
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87 | if (error) {
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88 | if (error.code === 'ENOENT') {
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89 | console.error('File not found: ' + options.file);
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90 | process.exit(2);
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91 | }
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92 |
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93 | console.error(
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94 | options.trace && error.stack ||
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95 | error.message ||
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96 | String(error));
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97 |
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98 | process.exit(1);
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99 | }
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100 |
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101 | try {
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102 | output = JSON.parse(input);
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103 | isYaml = false;
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104 | } catch (err) {
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105 | if (err instanceof SyntaxError) {
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106 | try {
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107 | output = [];
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108 | yaml.loadAll(input, function (doc) { output.push(doc); }, {});
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109 | isYaml = true;
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110 |
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111 | if (output.length === 0) output = null;
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112 | else if (output.length === 1) output = output[0];
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113 |
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114 | } catch (e) {
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115 | if (options.trace && err.stack) console.error(e.stack);
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116 | else console.error(e.toString(options.compact));
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117 |
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118 | process.exit(1);
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119 | }
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120 | } else {
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121 | console.error(
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122 | options.trace && err.stack ||
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123 | err.message ||
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124 | String(err));
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125 |
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126 | process.exit(1);
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127 | }
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128 | }
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129 |
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130 | if (isYaml) console.log(JSON.stringify(output, null, ' '));
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131 | else console.log(yaml.dump(output));
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132 | });
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