MediaWiki  1.29.2
QuickArrayReader.php
Go to the documentation of this file.
1 <?php
2 
10  private $vars = [];
11 
15  function __construct( $string ) {
16  $scalarTypes = [
17  T_LNUMBER => true,
18  T_DNUMBER => true,
19  T_STRING => true,
20  T_CONSTANT_ENCAPSED_STRING => true,
21  ];
22  $skipTypes = [
23  T_WHITESPACE => true,
24  T_COMMENT => true,
25  T_DOC_COMMENT => true,
26  ];
27  $tokens = token_get_all( $string );
28  $count = count( $tokens );
29  for ( $i = 0; $i < $count; ) {
30  while ( isset( $skipTypes[$tokens[$i][0]] ) ) {
31  $i++;
32  }
33  switch ( $tokens[$i][0] ) {
34  case T_OPEN_TAG:
35  $i++;
36  continue;
37  case T_VARIABLE:
38  // '$messages' -> 'messages'
39  $varname = trim( substr( $tokens[$i][1], 1 ) );
40  $varindex = null;
41 
42  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
43  }
44 
45  if ( $tokens[$i] === '[' ) {
46  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
47  }
48 
49  if ( isset( $scalarTypes[$tokens[$i][0]] ) ) {
50  $varindex = $this->parseScalar( $tokens[$i] );
51  } else {
52  throw $this->except( $tokens[$i], 'scalar index' );
53  }
54  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
55  }
56 
57  if ( $tokens[$i] !== ']' ) {
58  throw $this->except( $tokens[$i], ']' );
59  }
60  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
61  }
62  }
63 
64  if ( $tokens[$i] !== '=' ) {
65  throw $this->except( $tokens[$i], '=' );
66  }
67  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
68  }
69 
70  if ( isset( $scalarTypes[$tokens[$i][0]] ) ) {
71  $buildval = $this->parseScalar( $tokens[$i] );
72  } elseif ( $tokens[$i][0] === T_ARRAY ) {
73  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
74  }
75  if ( $tokens[$i] !== '(' ) {
76  throw $this->except( $tokens[$i], '(' );
77  }
78  $buildval = [];
79  do {
80  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
81  }
82 
83  if ( $tokens[$i] === ')' ) {
84  break;
85  }
86  if ( isset( $scalarTypes[$tokens[$i][0]] ) ) {
87  $key = $this->parseScalar( $tokens[$i] );
88  }
89  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
90  }
91 
92  if ( $tokens[$i][0] !== T_DOUBLE_ARROW ) {
93  throw $this->except( $tokens[$i], '=>' );
94  }
95  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
96  }
97 
98  if ( isset( $scalarTypes[$tokens[$i][0]] ) ) {
99  $val = $this->parseScalar( $tokens[$i] );
100  }
102  $buildval[$key] = $val;
104  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
105  }
106 
107  if ( $tokens[$i] === ',' ) {
108  continue;
109  } elseif ( $tokens[$i] === ')' ) {
110  break;
111  } else {
112  throw $this->except( $tokens[$i], ', or )' );
113  }
114  } while ( true );
115  } else {
116  throw $this->except( $tokens[$i], 'scalar or array' );
117  }
118  if ( is_null( $varindex ) ) {
119  $this->vars[$varname] = $buildval;
120  } else {
122  $this->vars[$varname][$varindex] = $buildval;
124  }
125  while ( isset( $skipTypes[$tokens[++$i][0]] ) ) {
126  }
127  if ( $tokens[$i] !== ';' ) {
128  throw $this->except( $tokens[$i], ';' );
129  }
130  $i++;
131  break;
132  default:
133  throw $this->except( $tokens[$i], 'open tag, whitespace, or variable.' );
134  }
135  }
136  }
137 
143  private function except( $got, $expected ) {
144  if ( is_array( $got ) ) {
145  $got = token_name( $got[0] ) . " ('" . $got[1] . "')";
146  } else {
147  $got = "'" . $got . "'";
148  }
149 
150  return new Exception( "Expected $expected, got $got" );
151  }
152 
160  function parseScalar( $token ) {
161  if ( is_array( $token ) ) {
162  $str = $token[1];
163  } else {
164  $str = $token;
165  }
166  if ( $str !== '' && $str[0] == '\'' ) {
167  // Single-quoted string
168  // @fixme trim() call is due to mystery bug where whitespace gets
169  // appended to the token; without it we ended up reading in the
170  // extra quote on the end!
171  return strtr( substr( trim( $str ), 1, -1 ),
172  [ '\\\'' => '\'', '\\\\' => '\\' ] );
173  }
174 
176  if ( $str !== '' && $str[0] == '"' ) {
177  // Double-quoted string
178  // @fixme trim() call is due to mystery bug where whitespace gets
179  // appended to the token; without it we ended up reading in the
180  // extra quote on the end!
182  return stripcslashes( substr( trim( $str ), 1, -1 ) );
183  }
185 
186  if ( substr( $str, 0, 4 ) === 'true' ) {
187  return true;
188  }
189 
190  if ( substr( $str, 0, 5 ) === 'false' ) {
191  return false;
192  }
193 
194  if ( substr( $str, 0, 4 ) === 'null' ) {
195  return null;
196  }
197 
198  // Must be some kind of numeric value, so let PHP's weak typing
199  // be useful for a change
200  return $str;
201  }
202 
207  function getVar( $varname ) {
208  if ( isset( $this->vars[$varname] ) ) {
209  return $this->vars[$varname];
210  } else {
211  return null;
212  }
213  }
214 }
215 
captcha-old.count
count
Definition: captcha-old.py:225
wfSuppressWarnings
wfSuppressWarnings( $end=false)
Reference-counted warning suppression.
Definition: GlobalFunctions.php:1974
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
QuickArrayReader\__construct
__construct( $string)
Definition: QuickArrayReader.php:15
QuickArrayReader\getVar
getVar( $varname)
Definition: QuickArrayReader.php:207
QuickArrayReader\except
except( $got, $expected)
Definition: QuickArrayReader.php:143
wfRestoreWarnings
wfRestoreWarnings()
Definition: GlobalFunctions.php:1982
QuickArrayReader
Quickie parser class that can happily read the subset of PHP we need for our localization arrays safe...
Definition: QuickArrayReader.php:9
$tokens
$tokens
Definition: mwdoc-filter.php:46
QuickArrayReader\$vars
$vars
Definition: QuickArrayReader.php:10
QuickArrayReader\parseScalar
parseScalar( $token)
Parse a scalar value in PHP.
Definition: QuickArrayReader.php:160