Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like ConsoleProgressBar often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ConsoleProgressBar, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
27 | class ConsoleProgressBar |
||
28 | { |
||
29 | |||
30 | /** |
||
31 | * The current step the progress bar should show. |
||
32 | * @var int |
||
33 | */ |
||
34 | protected $currentStep = 0; |
||
35 | |||
36 | /** |
||
37 | * The maximum number of steps to go. |
||
38 | * Calculated once from the settings. |
||
39 | * @var int |
||
40 | */ |
||
41 | protected $numSteps = 0; |
||
42 | |||
43 | /** |
||
44 | * Indicates if the starting point for the bar has been stored. |
||
45 | * Per default this is false to indicate that no start position has been |
||
46 | * stored, yet. |
||
47 | * @var bool |
||
48 | */ |
||
49 | protected $started = false; |
||
50 | |||
51 | /** |
||
52 | * Whether a position has been stored before, using the storePos() method. |
||
53 | * @var bool |
||
54 | */ |
||
55 | protected $positionStored = false; |
||
56 | |||
57 | /** |
||
58 | * Container to hold the options |
||
59 | * @var array(string=>mixed) |
||
60 | */ |
||
61 | protected $options = array( |
||
62 | 'barChar' => "=", |
||
63 | 'emptyChar' => "-", |
||
64 | 'formatString' => "%act% / %max% [%bar%] %fraction%% %memory%", |
||
65 | 'fractionFormat' => "%01.2f", |
||
66 | 'progressChar' => ">", |
||
67 | 'redrawFrequency' => 1, |
||
68 | 'step' => 1, |
||
69 | 'width' => 100, |
||
70 | 'actFormat' => '%.0f', |
||
71 | 'maxFormat' => '%.0f', |
||
72 | 'max' => 100, |
||
73 | ); |
||
74 | |||
75 | /** |
||
76 | * Storage for actual values to be replaced in the format string. |
||
77 | * Actual values are stored here and will be inserted into the bar |
||
78 | * before printing it. |
||
79 | * @var array(string=>string) |
||
80 | */ |
||
81 | protected $valueMap = array( |
||
82 | 'bar' => '', |
||
83 | 'fraction' => '', |
||
84 | 'act' => '', |
||
85 | 'max' => '', |
||
86 | 'memory' => '' |
||
87 | ); |
||
88 | |||
89 | /** |
||
90 | * Stores the bar utilization. |
||
91 | * This array saves how much space a specific part of the bar utilizes to not |
||
92 | * recalculate those on every step. |
||
93 | * @var array(string=>int) |
||
94 | */ |
||
95 | protected $measures = array( |
||
96 | 'barSpace' => 0, |
||
97 | 'fractionSpace' => 0, |
||
98 | 'actSpace' => 0, |
||
99 | 'maxSpace' => 0, |
||
100 | 'fixedCharSpace' => 0, |
||
101 | ); |
||
102 | |||
103 | /** |
||
104 | * Creates a new progress bar. |
||
105 | * |
||
106 | * @param int $max Maximum value, where progressbar |
||
107 | * reaches 100%. |
||
108 | * @param array(string=>string) $options Options |
||
|
|||
109 | */ |
||
110 | public function __construct($max = null, $options = array()) |
||
122 | |||
123 | /** |
||
124 | * Set new options. |
||
125 | * This method allows you to change the options of progressbar. |
||
126 | * |
||
127 | * @param $key either an array of key=>value pairs or a string of the option |
||
128 | * @param $value only needed if the key is a string |
||
129 | */ |
||
130 | public function setOptions($key, $value = null) |
||
141 | |||
142 | /** |
||
143 | * Returns the current options. |
||
144 | * Returns the options currently set for this progressbar. |
||
145 | * @return The current options. |
||
146 | */ |
||
147 | public function getOptions() |
||
151 | |||
152 | /** |
||
153 | * Property read access. |
||
154 | * |
||
155 | * @param string $key Name of the property. |
||
156 | * |
||
157 | * @return mixed Value of the property or null. |
||
158 | */ |
||
159 | public function __get($key) |
||
179 | |||
180 | /** |
||
181 | * Property write access. |
||
182 | * |
||
183 | * @param string $key Name of the property. |
||
184 | * @param mixed $val The value for the property. |
||
185 | * |
||
186 | * @throws Exception |
||
187 | * If a desired property could not be found. |
||
188 | */ |
||
189 | public function __set($key, $val) |
||
219 | |||
220 | /** |
||
221 | * Property isset access. |
||
222 | * |
||
223 | * @param string $key Name of the property. |
||
224 | * |
||
225 | * @return bool True is the property is set, otherwise false. |
||
226 | */ |
||
227 | public function __isset($key) |
||
239 | |||
240 | /** |
||
241 | * Start the progress bar |
||
242 | * Starts the progress bar and sticks it to the current line. |
||
243 | * No output will be done yet. |
||
244 | * to print the bar. |
||
245 | * @return void |
||
246 | */ |
||
247 | public function start() |
||
253 | |||
254 | /** |
||
255 | * Advance the progress bar. |
||
256 | * Advances the progress bar by $step steps. Redraws the bar by default, |
||
257 | * using the output method. |
||
258 | * |
||
259 | * @param bool $redraw Whether to redraw the bar immediately. |
||
260 | * @param int $step How many steps to advance. |
||
261 | * |
||
262 | * @return void |
||
263 | */ |
||
264 | public function advance($redraw = true, $step = 1) |
||
272 | |||
273 | public function setValueMap($key, $value) |
||
277 | |||
278 | /** |
||
279 | * Finish the progress bar. |
||
280 | * Finishes the bar (jump to 100% if not happened yet,...) and jumps |
||
281 | * to the next line to allow new output. Also resets the values of the |
||
282 | * @return void |
||
283 | */ |
||
284 | public function finish() |
||
290 | |||
291 | /** |
||
292 | * Draw the progress bar. |
||
293 | * Prints the progress-bar to the screen. If start() has not been called |
||
294 | * yet, the current line is used for start |
||
295 | * @return void |
||
296 | */ |
||
297 | protected function output() |
||
313 | |||
314 | /** |
||
315 | * Stores the current cursor position. |
||
316 | * Saves the current cursor position to return to it using |
||
317 | * restorePos. Multiple calls |
||
318 | * to this method will override each other. Only the last |
||
319 | * position is saved. |
||
320 | * @return void |
||
321 | */ |
||
322 | protected function storePos() |
||
330 | |||
331 | /** |
||
332 | * Restores a cursor position. |
||
333 | * Restores the cursor position last saved using storePos. |
||
334 | * @throws Exception |
||
335 | * If no position is saved. |
||
336 | * @return void |
||
337 | */ |
||
338 | |||
339 | protected function restorePos() |
||
350 | |||
351 | /** |
||
352 | * Generate all values to be replaced in the format string. |
||
353 | * @return void |
||
354 | */ |
||
355 | protected function generateValues() |
||
399 | |||
400 | /** |
||
401 | * Insert values into bar format string. |
||
402 | * @return void |
||
403 | */ |
||
404 | protected function insertValues() |
||
414 | |||
415 | /** |
||
416 | * Calculate several measures necessary to generate a bar. |
||
417 | * @return void |
||
418 | */ |
||
419 | protected function calculateMeasures() |
||
439 | |||
440 | /** |
||
441 | * Strip all escape sequences from a string to measure it's size correctly. |
||
442 | * |
||
443 | * @param mixed $str |
||
444 | * |
||
445 | * @return void |
||
446 | */ |
||
447 | protected function stripEscapeSequences($str) |
||
451 | |||
452 | /** |
||
453 | * Check if we currently running under windows |
||
454 | * @return bool |
||
455 | */ |
||
456 | protected function isWindows() |
||
460 | |||
461 | /** |
||
462 | * Binary safe str_pad() replacement. |
||
463 | * This method is a multi-byte encoding safe replacement for the PHP |
||
464 | * function str_pad(). It mimics exactly the behavior of str_pad(), but |
||
465 | * uses iconv_* functions with UTF-8 encoding. The parameters received by |
||
466 | * this method equal the parameters of {@link http://php.net/str_pad |
||
467 | * str_pad()}. Note: Make sure to hand only UTF-8 encoded content to this |
||
468 | * method. |
||
469 | * |
||
470 | * @param string $input |
||
471 | * @param int $padLength |
||
472 | * @param string $padString |
||
473 | * @param int $padType |
||
474 | * |
||
475 | * @return string |
||
476 | */ |
||
477 | protected function strPad($input, $padLength, $padString = ' ', $padType = STR_PAD_RIGHT) |
||
521 | } |
This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types.