Completed
Push — master ( 3b9c69...0cfff3 )
by Greg
02:07
created

Application::generalCommand()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 14
Code Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 14
rs 9.4285
c 0
b 0
f 0
cc 2
eloc 11
nc 2
nop 5
1
<?php
2
3
namespace Consolidation\Cgr;
4
5
class Application
6
{
7
    protected $outputFile = '';
8
9
    /**
10
     * Run the cgr tool, a safer alternative to `composer global require`.
11
     *
12
     * @param array $argv The global $argv array passed in by PHP
13
     * @param string $home The path to the user's home directory
14
     * @return integer
15
     */
16
    public function run($argv, $home)
17
    {
18
        $optionDefaultValues = $this->getDefaultOptionValues($home);
19
        $optionDefaultValues = $this->overlayEnvironmentValues($optionDefaultValues);
20
21
        list($argv, $options) = $this->parseOutOurOptions($argv, $optionDefaultValues);
22
        $commandList = $this->separateProjectAndGetCommandList($argv, $home, $options);
23
        return $this->runCommandList($commandList, $options);
0 ignored issues
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Documentation introduced by
$commandList is of type object<Consolidation\Cgr\CommandToExec>, but the function expects a array.

It seems like the type of the argument is not accepted by the function/method which you are calling.

In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.

We suggest to add an explicit type cast like in the following example:

function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
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24
    }
25
26
    /**
27
     * Set up output redirection. Used by tests.
28
     */
29
    public function setOutputFile($outputFile)
30
    {
31
        $this->outputFile = $outputFile;
32
    }
33
34
    /**
35
     * Figure out everything we're going to do, but don't do any of it
36
     * yet, just return the command objects to run.
37
     */
38
    public function parseArgvAndGetCommandList($argv, $home)
39
    {
40
        $optionDefaultValues = $this->getDefaultOptionValues($home);
41
        $optionDefaultValues = $this->overlayEnvironmentValues($optionDefaultValues);
42
43
        list($argv, $options) = $this->parseOutOurOptions($argv, $optionDefaultValues);
44
        return $this->separateProjectAndGetCommandList($argv, $home, $options);
45
    }
46
47
    /**
48
     * Figure out everything we're going to do, but don't do any of it
49
     * yet, just return the command objects to run.
50
     */
51
    public function separateProjectAndGetCommandList($argv, $home, $options)
0 ignored issues
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Unused Code introduced by
The parameter $home is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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52
    {
53
        list($command, $projects, $composerArgs) = $this->separateProjectsFromArgs($argv, $options);
54
        $commandList = $this->getCommandsToExec($command, $composerArgs, $projects, $options);
55
        return $commandList;
56
    }
57
58
    /**
59
     * Run all of the commands in a list.  Abort early if any fail.
60
     *
61
     * @param array $commandList An array of CommandToExec
62
     * @return integer
63
     */
64
    public function runCommandList($commandList, $options)
0 ignored issues
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Unused Code introduced by
The parameter $options is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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65
    {
66
        foreach ($commandList as $command) {
67
            $exitCode = $command->run($this->outputFile);
68
            if ($exitCode) {
69
                return $exitCode;
70
            }
71
        }
72
        return 0;
73
    }
74
75
    /**
76
     * Return an array containing a list of commands to execute.  Depending on
77
     * the composition of the aguments and projects parameters, this list will
78
     * contain either a single command string to call through to composer (if
79
     * cgr is being used as a composer alias), or it will contain a list of
80
     * appropriate replacement 'composer global require' commands that install
81
     * each project in its own installation directory, while installing each
82
     * projects' binaries in the global Composer bin directory,
83
     * ~/.composer/vendor/bin.
84
     *
85
     * @param array $composerArgs
86
     * @param array $projects
87
     * @param array $options
88
     * @return CommandToExec
89
     */
90
    public function getCommandsToExec($command, $composerArgs, $projects, $options)
91
    {
92
        $execPath = $options['composer-path'];
93
        // If command was not 'global require', 'global update' or
94
        // 'global remove', then call through to the standard composer
95
        // with all of the original args.
96
        if (empty($command)) {
97
            return array(new CommandToExec($execPath, $composerArgs));
0 ignored issues
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Bug Best Practice introduced by
The return type of return array(new \Consol...cPath, $composerArgs)); (Consolidation\Cgr\CommandToExec[]) is incompatible with the return type documented by Consolidation\Cgr\Application::getCommandsToExec of type Consolidation\Cgr\CommandToExec.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

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98
        }
99
        // Call requireCommand, updateCommand, or removeCommand, as appropriate.
100
        $methodName = "{$command}Command";
101
        if (function_exists($methodName)) {
102
            return $this->$methodName($execPath, $composerArgs, $projects, $options);
103
        } // If there is no specific implementation for the requested command, then call 'generalCommand'.
104
        else {
105
            return $this->generalCommand($command, $execPath, $composerArgs, $projects, $options);
0 ignored issues
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Bug Best Practice introduced by
The return type of return $this->generalCom..., $projects, $options); (array) is incompatible with the return type documented by Consolidation\Cgr\Application::getCommandsToExec of type Consolidation\Cgr\CommandToExec.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

Loading history...
106
        }
107
    }
108
109
    /**
110
     * Return our list of default option values, with paths relative to
111
     * the provided home directory.
112
     * @param string $home The user's home directory
113
     * @return array
114
     */
115
    public function getDefaultOptionValues($home)
116
    {
117
        return array(
118
            'composer' => false,
119
            'composer-path' => 'composer',
120
            'base-dir' => "$home/.composer/global",
121
            'bin-dir' => "$home/.composer/vendor/bin",
122
        );
123
    }
124
125
    /**
126
     * Replace option default values with the corresponding
127
     * environment variable value, if it is set.
128
     */
129
    protected function overlayEnvironmentValues($defaults)
130
    {
131
        foreach ($defaults as $key => $value) {
132
            $envKey = 'CGR_' . strtoupper(strtr($key, '-', '_'));
133
            $envValue = getenv($envKey);
134
            if ($envValue) {
135
                $defaults[$key] = $envValue;
136
            }
137
        }
138
139
        return $defaults;
140
    }
141
142
    /**
143
     * We use our own special-purpose argv parser. The options that apply
144
     * to this tool are identified by a simple associative array, where
145
     * the key is the option name, and the value is its default value.
146
     * The result of this function is an array of two items containing:
147
     *  - An array of the items in $argv not used to set an option value
148
     *  - An array of options containing the user-specified or default values
149
     *
150
     * @param array $argv The global $argv passed in by php
151
     * @param array $optionDefaultValues An associative array
152
     * @return array
153
     */
154
    public function parseOutOurOptions($argv, $optionDefaultValues)
155
    {
156
        $argv0 = array_shift($argv);
157
        $options['composer'] = (strpos($argv0, 'composer') !== false);
0 ignored issues
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Coding Style Comprehensibility introduced by
$options was never initialized. Although not strictly required by PHP, it is generally a good practice to add $options = array(); before regardless.

Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.

Let’s take a look at an example:

foreach ($collection as $item) {
    $myArray['foo'] = $item->getFoo();

    if ($item->hasBar()) {
        $myArray['bar'] = $item->getBar();
    }

    // do something with $myArray
}

As you can see in this example, the array $myArray is initialized the first time when the foreach loop is entered. You can also see that the value of the bar key is only written conditionally; thus, its value might result from a previous iteration.

This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.

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158
        $passAlongArgvItems = array();
159
        $options = array();
160
        while (!empty($argv)) {
161
            $arg = array_shift($argv);
162
            if ((substr($arg, 0, 2) == '--') && array_key_exists(substr($arg, 2), $optionDefaultValues)) {
163
                $options[substr($arg, 2)] = array_shift($argv);
164
            } else {
165
                $passAlongArgvItems[] = $arg;
166
            }
167
        }
168
        return array($passAlongArgvItems, $options + $optionDefaultValues);
169
    }
170
171
    /**
172
     * After our options are removed by parseOutOurOptions, those items remaining
173
     * in $argv will be separated into a list of projects and versions, and
174
     * anything else that is not a project:version. Returns an array of two
175
     * items containing:
176
     *  - An associative array, where the key is the project name and the value
177
     *    is the version (or an empty string, if no version was specified)
178
     *  - The remaining $argv items not used to build the projects array.
179
     *
180
     * @param array $argv The $argv array from parseOutOurOptions()
181
     * @return array
182
     */
183
    public function separateProjectsFromArgs($argv, $options)
184
    {
185
        $cgrCommands = array('require', 'update', 'remove');
186
        $command = 'require';
187
        $composerArgs = array();
188
        $projects = array();
189
        $globalMode = !$options['composer'];
190
        foreach ($argv as $arg) {
191
            if ($arg[0] == '-') {
192
                // Any flags (first character is '-') will just be passed
193
                // through to to composer. Flags interpreted by cgr have
194
                // already been removed from $argv.
195
                $composerArgs[] = $arg;
196
            } elseif (strpos($arg, '/') !== false) {
197
                // Arguments containing a '/' name projects.  We will split
198
                // the project from its version, allowing the separator
199
                // character to be either a '=' or a ':', and then store the
200
                // result in the $projects array.
201
                $projectAndVersion = explode(':', strtr($arg, '=', ':'), 2) + array('', '');
202
                list($project, $version) = $projectAndVersion;
203
                $projects[$project] = $version;
204
            } elseif ($this->isComposerVersion($arg)) {
205
                // If an argument is a composer version, then we will alter
206
                // the last project we saw, attaching this version to it.
207
                // This allows us to handle 'a/b:1.0' and 'a/b 1.0' equivalently.
208
                $keys = array_keys($projects);
209
                $lastProject = array_pop($keys);
210
                unset($projects[$lastProject]);
211
                $projects[$lastProject] = $arg;
212
            } elseif ($arg == 'global') {
213
                // Make note if we see the 'global' command.
214
                $globalMode = true;
215
            } else {
216
                // If we see any command other than 'global [require|update|remove]',
217
                // then we will pass *all* of the arguments through to
218
                // composer unchanged. We return an empty projects array
219
                // to indicate that this should be a pass-through call
220
                // to composer, rather than one or more calls to
221
                // 'composer require' to install global projects.
222
                if ((!$globalMode) || (!in_array($arg, $cgrCommands))) {
223
                    return array('', array(), $argv);
224
                }
225
                // Remember which command we saw
226
                $command = $arg;
227
            }
228
        }
229
        return array($command, $projects, $composerArgs);
230
    }
231
232
    /**
233
     * Provide a safer version of `composer global require`.  Each project
234
     * listed in $projects will be installed into its own project directory.
235
     * The binaries from each project will still be placed in the global
236
     * composer bin directory.
237
     *
238
     * @param string $composerCommand The composer command to run e.g. require
239
     * @param string $execPath The path to composer
240
     * @param array $composerArgs Anything from the global $argv to be passed
241
     *   on to Composer
242
     * @param array $projects A list of projects to install, with the key
243
     *   specifying the project name, and the value specifying its version.
244
     * @param array $options User options from the command line; see
245
     *   $optionDefaultValues in the main() function.
246
     * @return array
247
     */
248
    public function generalCommand($composerCommand, $execPath, $composerArgs, $projects, $options)
249
    {
250
        $globalBaseDir = $options['base-dir'];
251
        $binDir = $options['bin-dir'];
252
        $env = array("COMPOSER_BIN_DIR" => $binDir);
253
        $result = array();
254
        foreach ($projects as $project => $version) {
255
            $installLocation = "$globalBaseDir/$project";
256
            $projectWithVersion = $this->projectWithVersion($project, $version);
257
            $commandToExec = $this->buildGlobalCommand($composerCommand, $execPath, $composerArgs, $projectWithVersion, $env, $installLocation);
258
            $result[] = $commandToExec;
259
        }
260
        return $result;
261
    }
262
263
    /**
264
     * Run `composer global update`. Not only do we want to update the
265
     * "global" Composer project, we also want to update all of the
266
     * "isolated" projects installed via cgr in ~/.composer/global.
267
     *
268
     * @param string $command The path to composer
0 ignored issues
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Bug introduced by
There is no parameter named $command. Was it maybe removed?

This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.

Consider the following example. The parameter $italy is not defined by the method finale(...).

/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}

The most likely cause is that the parameter was removed, but the annotation was not.

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269
     * @param array $composerArgs Anything from the global $argv to be passed
270
     *   on to Composer
271
     * @param array $projects A list of projects to update.
272
     * @param array $options User options from the command line; see
273
     *   $optionDefaultValues in the main() function.
274
     * @return array
275
     */
276
    public function updateCommand($execPath, $composerArgs, $projects, $options)
277
    {
278
        // TODO: if projects are empty, make a list of everything currently installed
279
        return $this->generalCommand('update', $execPath, $composerArgs, $projects, $options);
280
    }
281
282
    /**
283
     * Return $project:$version, or just $project if there is no $version.
284
     *
285
     * @param string $project The project to install
286
     * @param string $version The version desired
287
     * @return string
288
     */
289
    public function projectWithVersion($project, $version)
290
    {
291
        if (empty($version)) {
292
            return $project;
293
        }
294
        return "$project:$version";
295
    }
296
297
    /**
298
     * Generate command string to call `composer require` to install one project.
299
     *
300
     * @param string $command The path to composer
0 ignored issues
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Documentation introduced by
There is no parameter named $command. Did you maybe mean $composerCommand?

This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. It has, however, found a similar but not annotated parameter which might be a good fit.

Consider the following example. The parameter $ireland is not defined by the method finale(...).

/**
 * @param array $germany
 * @param array $ireland
 */
function finale($germany, $island) {
    return "2:1";
}

The most likely cause is that the parameter was changed, but the annotation was not.

Loading history...
301
     * @param array $composerArgs The arguments to pass to composer
302
     * @param string $projectWithVersion The project:version to install
303
     * @param array $env Environment to set prior to exec
304
     * @param string $installLocation Location to install the project
305
     * @return CommandToExec
306
     */
307
    public function buildGlobalCommand($composerCommand, $execPath, $composerArgs, $projectWithVersion, $env, $installLocation)
308
    {
309
        $projectSpecificArgs = array("--working-dir=$installLocation", $composerCommand, $projectWithVersion);
310
        $arguments = array_merge($composerArgs, $projectSpecificArgs);
311
        return new CommandToExec($execPath, $arguments, $env, $installLocation);
312
    }
313
314
    /**
315
     * Identify an argument that could be a Composer version string.
316
     *
317
     * @param string $arg The argument to test
318
     * @return boolean
319
     */
320
    public function isComposerVersion($arg)
321
    {
322
        $specialVersionChars = array('^', '~', '<', '>');
323
        return is_numeric($arg[0]) || in_array($arg[0], $specialVersionChars);
324
    }
325
}
326