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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 | 28 |
29 // Initlialize namespaces. | |
30 var devtools = devtools || {}; | |
31 devtools.profiler = devtools.profiler || {}; | |
32 | |
33 | |
34 /** | 29 /** |
35 * Creates a CSV lines parser. | 30 * Creates a CSV lines parser. |
36 */ | 31 */ |
37 devtools.profiler.CsvParser = function() { | 32 function CsvParser() { |
38 }; | 33 }; |
39 | 34 |
40 | 35 |
41 /** | 36 /** |
42 * A regex for matching a CSV field. | 37 * A regex for matching a CSV field. |
43 * @private | 38 * @private |
44 */ | 39 */ |
45 devtools.profiler.CsvParser.CSV_FIELD_RE_ = /^"((?:[^"]|"")*)"|([^,]*)/; | 40 CsvParser.CSV_FIELD_RE_ = /^"((?:[^"]|"")*)"|([^,]*)/; |
46 | 41 |
47 | 42 |
48 /** | 43 /** |
49 * A regex for matching a double quote. | 44 * A regex for matching a double quote. |
50 * @private | 45 * @private |
51 */ | 46 */ |
52 devtools.profiler.CsvParser.DOUBLE_QUOTE_RE_ = /""/g; | 47 CsvParser.DOUBLE_QUOTE_RE_ = /""/g; |
53 | 48 |
54 | 49 |
55 /** | 50 /** |
56 * Parses a line of CSV-encoded values. Returns an array of fields. | 51 * Parses a line of CSV-encoded values. Returns an array of fields. |
57 * | 52 * |
58 * @param {string} line Input line. | 53 * @param {string} line Input line. |
59 */ | 54 */ |
60 devtools.profiler.CsvParser.prototype.parseLine = function(line) { | 55 CsvParser.prototype.parseLine = function(line) { |
61 var fieldRe = devtools.profiler.CsvParser.CSV_FIELD_RE_; | 56 var fieldRe = CsvParser.CSV_FIELD_RE_; |
62 var doubleQuoteRe = devtools.profiler.CsvParser.DOUBLE_QUOTE_RE_; | 57 var doubleQuoteRe = CsvParser.DOUBLE_QUOTE_RE_; |
63 var pos = 0; | 58 var pos = 0; |
64 var endPos = line.length; | 59 var endPos = line.length; |
65 var fields = []; | 60 var fields = []; |
66 if (endPos > 0) { | 61 if (endPos > 0) { |
67 do { | 62 do { |
68 var fieldMatch = fieldRe.exec(line.substr(pos)); | 63 var fieldMatch = fieldRe.exec(line.substr(pos)); |
69 if (typeof fieldMatch[1] === "string") { | 64 if (typeof fieldMatch[1] === "string") { |
70 var field = fieldMatch[1]; | 65 var field = fieldMatch[1]; |
71 pos += field.length + 3; // Skip comma and quotes. | 66 pos += field.length + 3; // Skip comma and quotes. |
72 fields.push(field.replace(doubleQuoteRe, '"')); | 67 fields.push(field.replace(doubleQuoteRe, '"')); |
73 } else { | 68 } else { |
74 // The second field pattern will match anything, thus | 69 // The second field pattern will match anything, thus |
75 // in the worst case the match will be an empty string. | 70 // in the worst case the match will be an empty string. |
76 var field = fieldMatch[2]; | 71 var field = fieldMatch[2]; |
77 pos += field.length + 1; // Skip comma. | 72 pos += field.length + 1; // Skip comma. |
78 fields.push(field); | 73 fields.push(field); |
79 } | 74 } |
80 } while (pos <= endPos); | 75 } while (pos <= endPos); |
81 } | 76 } |
82 return fields; | 77 return fields; |
83 }; | 78 }; |
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