Index: chrome/browser/resources/net_internals/util.js |
=================================================================== |
--- chrome/browser/resources/net_internals/util.js (revision 46639) |
+++ chrome/browser/resources/net_internals/util.js (working copy) |
@@ -104,3 +104,120 @@ |
} |
return '?'; |
} |
+ |
+/** |
+ * Builds a string by repeating |str| |count| times. |
+ */ |
+function makeRepeatedString(str, count) { |
+ var out = []; |
+ for (var i = 0; i < count; ++i) |
+ out.push(str); |
+ return out.join(''); |
+} |
+ |
+/** |
+ * TablePrinter is a helper to format a table as ascii art. |
+ * |
+ * Usage: call addRow() and addCell() repeatedly to specify the data. Ones |
+ * all the fields have been inputted, call toText() to format it as text. |
+ */ |
+function TablePrinter() { |
+ this.rows_ = []; |
+} |
+ |
+function TablePrinterCell(value) { |
+ this.text = '' + value; |
+ this.alignRight = false; |
+ this.allowOverflow = false; |
+} |
+ |
+/** |
+ * Starts a new row. |
+ */ |
+TablePrinter.prototype.addRow = function() { |
+ this.rows_.push([]); |
+}; |
+ |
+/** |
+ * Adds a column to the current row, setting its value to cellText. |
+ * |
+ * @returns {!TablePrinterCell} the cell that was added. |
+ */ |
+TablePrinter.prototype.addCell = function(cellText) { |
+ var r = this.rows_[this.rows_.length - 1]; |
+ var cell = new TablePrinterCell(cellText); |
+ r.push(cell); |
+ return cell; |
+}; |
+ |
+/** |
+ * Returns the maximum number of columns this table contains. |
+ */ |
+TablePrinter.prototype.getNumColumns = function() { |
+ var numColumns = 0; |
+ for (var i = 0; i < this.rows_.length; ++i) { |
+ numColumns = Math.max(numColumns, this.rows_[i].length); |
+ } |
+ return numColumns; |
+} |
+ |
+/** |
+ * Returns the cell at position (rowIndex, columnIndex), or null if there is |
+ * no such cell. |
+ */ |
+TablePrinter.prototype.getCell_ = function(rowIndex, columnIndex) { |
+ if (rowIndex >= this.rows_.length) |
+ return null; |
+ var row = this.rows_[rowIndex]; |
+ if (columnIndex >= row.length) |
+ return null; |
+ return row[columnIndex]; |
+}; |
+ |
+/** |
+ * Returns a formatted text representation of the table data. |
+ */ |
+TablePrinter.prototype.toText = function() { |
+ var numRows = this.rows_.length; |
+ var numColumns = this.getNumColumns(); |
+ |
+ // Figure out the maximum width of each column. |
+ var columnWidths = []; |
+ columnWidths.length = numColumns; |
+ for (var i = 0; i < numColumns; ++i) |
+ columnWidths[i] = 0; |
+ |
+ for (var c = 0; c < numColumns; ++c) { |
+ for (var r = 0; r < numRows; ++r) { |
+ var cell = this.getCell_(r, c); |
+ if (cell && !cell.allowOverflow) { |
+ columnWidths[c] = Math.max(columnWidths[c], cell.text.length); |
+ } |
+ } |
+ } |
+ |
+ // Print each row. |
+ var out = []; |
+ for (var r = 0; r < numRows; ++r) { |
+ for (var c = 0; c < numColumns; ++c) { |
+ var cell = this.getCell_(r, c); |
+ if (cell) { |
+ // Padd the cell with spaces to make it fit the maximum column width. |
+ var padding = columnWidths[c] - cell.text.length; |
+ var paddingStr = makeRepeatedString(' ', padding); |
+ |
+ if (cell.alignRight) { |
+ out.push(paddingStr); |
+ out.push(cell.text); |
+ } else { |
+ out.push(cell.text); |
+ out.push(paddingStr); |
+ } |
+ } |
+ } |
+ out.push('\n'); |
+ } |
+ |
+ return out.join(''); |
+}; |
+ |