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| 1 // Copyright 2009 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are |
| 4 // met: |
| 5 // |
| 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided |
| 11 // with the distribution. |
| 12 // * Neither the name of Google Inc. nor the names of its |
| 13 // contributors may be used to endorse or promote products derived |
| 14 // from this software without specific prior written permission. |
| 15 // |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 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. |
| 27 |
| 28 |
| 29 // Initlialize namespaces. |
| 30 var devtools = devtools || {}; |
| 31 devtools.profiler = devtools.profiler || {}; |
| 32 |
| 33 |
| 34 /** |
| 35 * Creates a CSV lines parser. |
| 36 */ |
| 37 devtools.profiler.CsvParser = function() { |
| 38 }; |
| 39 |
| 40 |
| 41 /** |
| 42 * A regex for matching a trailing quote. |
| 43 * @private |
| 44 */ |
| 45 devtools.profiler.CsvParser.TRAILING_QUOTE_RE_ = /\"$/; |
| 46 |
| 47 |
| 48 /** |
| 49 * A regex for matching a double quote. |
| 50 * @private |
| 51 */ |
| 52 devtools.profiler.CsvParser.DOUBLE_QUOTE_RE_ = /\"\"/g; |
| 53 |
| 54 |
| 55 /** |
| 56 * Parses a line of CSV-encoded values. Returns an array of fields. |
| 57 * |
| 58 * @param {string} line Input line. |
| 59 */ |
| 60 devtools.profiler.CsvParser.prototype.parseLine = function(line) { |
| 61 var insideQuotes = false; |
| 62 var fields = []; |
| 63 var prevPos = 0; |
| 64 for (var i = 0, n = line.length; i < n; ++i) { |
| 65 switch (line.charAt(i)) { |
| 66 case ',': |
| 67 if (!insideQuotes) { |
| 68 fields.push(line.substring(prevPos, i)); |
| 69 prevPos = i + 1; |
| 70 } |
| 71 break; |
| 72 case '"': |
| 73 if (!insideQuotes) { |
| 74 insideQuotes = true; |
| 75 // Skip the leading quote. |
| 76 prevPos++; |
| 77 } else { |
| 78 if (i + 1 < n && line.charAt(i + 1) != '"') { |
| 79 insideQuotes = false; |
| 80 } else { |
| 81 i++; |
| 82 } |
| 83 } |
| 84 break; |
| 85 } |
| 86 } |
| 87 if (n > 0) { |
| 88 fields.push(line.substring(prevPos)); |
| 89 } |
| 90 |
| 91 for (i = 0; i < fields.length; ++i) { |
| 92 // Eliminate trailing quotes. |
| 93 fields[i] = fields[i].replace(devtools.profiler.CsvParser.TRAILING_QUOTE_RE_
, ''); |
| 94 // Convert quoted quotes into single ones. |
| 95 fields[i] = fields[i].replace(devtools.profiler.CsvParser.DOUBLE_QUOTE_RE_,
'"'); |
| 96 } |
| 97 return fields; |
| 98 }; |
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