xref: /plugin/struct/meta/ConfigParser.php (revision d7b296500cab514c167c2a2c46ca79305636d116) 
1<?php
2
3namespace dokuwiki\plugin\struct\meta;
4
5/**
6 * Class ConfigParser
7 *
8 * Utilities to parse the configuration syntax into an array
9 *
10 * @package dokuwiki\plugin\struct\meta
11 */
12class ConfigParser {
13
14
15    protected $config = array();
16
17    /**
18     * Parser constructor.
19     *
20     * parses the given configuration lines
21     *
22     * @param $lines
23     */
24    public function __construct($lines) {
25        /** @var \helper_plugin_struct_config $helper */
26        $helper = plugin_load('helper','struct_config');
27        $this->config = array(
28            'limit' => 0,
29            'dynfilters' => false,
30            'summarize' => false,
31            'rownumbers' => false,
32            'sepbyheaders' => false,
33            'headers' => array(),
34            'widths' => array(),
35            'filter' => array(),
36            'schemas' => array(),
37            'sort' => array()
38        );
39        // parse info
40        foreach($lines as $line) {
41            list($key, $val) = $this->splitLine($line);
42            if(!$key) continue;
43
44            $logic = 'OR';
45            // handle line commands (we allow various aliases here)
46            switch($key) {
47                case 'from':
48                case 'schema':
49                case 'tables':
50                    $this->config['schemas'] = array_merge($this->config['schemas'], $this->parseSchema($val));
51                    break;
52                case 'select':
53                case 'cols':
54                case 'field':
55                case 'col':
56                    $this->config['cols'] = $this->parseValues($val);
57                    break;
58                case 'title':
59                    $this->config['title'] = $val;
60                    break;
61                case 'head':
62                case 'header':
63                case 'headers':
64                    $this->config['headers'] = $this->parseValues($val);
65                    break;
66                case 'align':
67                    $this->config['align'] = $this->parseAlignments($val);
68                    break;
69                case 'widths':
70                    $this->config['width'] = $this->parseValues($val);
71                    break;
72                case 'min':
73                    $this->config['min'] = abs((int) $val);
74                    break;
75                case 'limit':
76                case 'max':
77                    $this->config['limit'] = abs((int) $val);
78                    break;
79                case 'order':
80                case 'sort':
81                    // FIXME multiple values!?
82                    $this->config['sort'][] = $helper->parseSort($val);
83                    break;
84                case 'where':
85                case 'filter':
86                case 'filterand':
87                    /** @noinspection PhpMissingBreakStatementInspection */
88                case 'and':
89                    $logic = 'AND';
90                case 'filteror':
91                case 'or':
92                    $flt = $helper->parseFilterLine($logic, $val);
93                    if ($flt) {
94                        $this->config['filter'][] = $flt;
95                    }
96                    break;
97                case 'page':
98                case 'target':
99                    $this->config['page'] = cleanID($val);
100                    break;
101                case 'dynfilters':
102                    $this->config['dynfilters'] = (bool) $val;
103                    break;
104                case 'rownumbers':
105                    $this->config['rownumbers'] = (bool) $val;
106                    break;
107                case 'summarize':
108                    $this->config['summarize'] = (bool) $val;
109                    break;
110                case 'sepbyheaders':
111                    $this->config['sepbyheaders'] = (bool) $val;
112                    break;
113                default:
114                    throw new StructException("unknown option '%s'", hsc($val));
115            }
116        }
117
118        // fill up headers - a NULL signifies that the column label is wanted
119        $this->config['headers'] = (array) $this->config['headers'];
120        $cnth = count($this->config['headers']);
121        $cntf = count($this->config['cols']);
122        for($i = $cnth; $i < $cntf; $i++) {
123            $this->config['headers'][] = null;
124        }
125    }
126
127    /**
128     * Get the parsed configuration
129     *
130     * @return array
131     */
132    public function getConfig() {
133        return $this->config;
134    }
135
136    /**
137     * Splits the given line into key and value
138     *
139     * @param $line
140     * @return bool|array returns false for empty lines
141     */
142    protected function splitLine($line) {
143        // ignore comments
144        $line = preg_replace('/(?<![&\\\\])#.*$/', '', $line);
145        $line = str_replace('\\#', '#', $line);
146        $line = trim($line);
147        if(empty($line)) return false;
148
149        $line = preg_split('/\s*:\s*/', $line, 2);
150        $line[0] = strtolower($line[0]);
151
152        return $line;
153    }
154
155    /**
156     * parses schema config and aliases
157     *
158     * @param $val
159     * @return array
160     */
161    protected function parseSchema($val){
162        $schemas = array();
163        $parts = explode(',', $val);
164        foreach($parts as $part) {
165            list($table, $alias) = explode(' ', $part);
166            $table = trim($table);
167            $alias = trim($alias);
168            if(!$table) continue;
169
170            $schemas[] = array($table, $alias,);
171        }
172        return $schemas;
173    }
174
175    /**
176     * Parse alignment data
177     *
178     * @param string $val
179     * @return string[]
180     */
181    protected function parseAlignments($val) {
182        $cols = explode(',', $val);
183        $data = array();
184        foreach($cols as $col) {
185            $col = trim(strtolower($col));
186            if($col[0] == 'c') {
187                $align = 'center';
188            } elseif($col[0] == 'r') {
189                $align = 'right';
190            } else {
191                $align = 'left';
192            }
193            $data[] = $align;
194        }
195
196        return $data;
197    }
198
199    /**
200     * Split values at the commas,
201     * - Wrap with quotes to escape comma, quotes escaped by two quotes
202     * - Within quotes spaces are stored.
203     *
204     * @param string $line
205     * @return array
206     */
207    protected function parseValues($line) {
208        $values = array();
209        $inQuote = false;
210        $escapedQuote = false;
211        $value = '';
212        $len = strlen($line);
213        for($i = 0; $i < $len; $i++) {
214            if($line{$i} == '"') {
215                if($inQuote) {
216                    if($escapedQuote) {
217                        $value .= '"';
218                        $escapedQuote = false;
219                        continue;
220                    }
221                    if($line{$i + 1} == '"') {
222                        $escapedQuote = true;
223                        continue;
224                    }
225                    array_push($values, $value);
226                    $inQuote = false;
227                    $value = '';
228                    continue;
229                } else {
230                    $inQuote = true;
231                    $value = ''; //don't store stuff before the opening quote
232                    continue;
233                }
234            } else if($line{$i} == ',') {
235                if($inQuote) {
236                    $value .= ',';
237                    continue;
238                } else {
239                    if(strlen($value) < 1) {
240                        continue;
241                    }
242                    array_push($values, trim($value));
243                    $value = '';
244                    continue;
245                }
246            }
247            $value .= $line{$i};
248        }
249        if(strlen($value) > 0) {
250            array_push($values, trim($value));
251        }
252        return $values;
253    }
254
255}
256