[2] | 1 | <?php |
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| 2 | /**************************************************************************\ |
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| 3 | * eGroupWare API - Template class * |
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| 4 | * (C) Copyright 1999-2000 NetUSE GmbH Kristian Koehntopp * |
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| 5 | * ------------------------------------------------------------------------ * |
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| 6 | * This is not part of phpGroupWare, but is used by eGroupWare. * |
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| 7 | * http://www.egroupware.org/ * |
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| 8 | * ------------------------------------------------------------------------ * |
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| 9 | * This program is free software; you can redistribute it and/or modify it * |
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| 10 | * under the terms of the GNU Lesser General Public License as published * |
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| 11 | * by the Free Software Foundation; either version 2.1 of the License, or * |
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| 12 | * any later version. * |
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| 13 | \**************************************************************************/ |
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| 14 | |
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| 15 | |
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| 16 | class Template |
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| 17 | { |
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| 18 | var $classname = 'Template'; |
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| 19 | |
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| 20 | /* if set, echo assignments */ |
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| 21 | var $debug = False; |
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| 22 | |
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[7681] | 23 | /* $file['handle'] = 'filename'; */ |
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[2] | 24 | var $file = array(); |
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| 25 | |
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| 26 | /* relative filenames are relative to this pathname */ |
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| 27 | var $root = ''; |
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| 28 | |
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[7681] | 29 | /* $varkeys['key'] = 'key'; $varvals['key'] = 'value'; */ |
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[2] | 30 | var $varkeys = array(); |
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| 31 | var $varvals = array(); |
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| 32 | |
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| 33 | /* 'remove' => remove undefined variables |
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| 34 | * 'comment' => replace undefined variables with comments |
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| 35 | * 'keep' => keep undefined variables |
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| 36 | */ |
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| 37 | var $unknowns = 'remove'; |
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| 38 | |
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| 39 | /* 'yes' => halt, 'report' => report error, continue, 'no' => ignore error quietly */ |
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| 40 | var $halt_on_error = 'yes'; |
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| 41 | |
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| 42 | /* last error message is retained here */ |
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| 43 | var $last_error = ''; |
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| 44 | |
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| 45 | /***************************************************************************/ |
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| 46 | /* public: Constructor. |
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| 47 | * root: template directory. |
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| 48 | * unknowns: how to handle unknown variables. |
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| 49 | */ |
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| 50 | function Template($root = '.', $unknowns = 'remove') |
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| 51 | { |
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| 52 | $this->set_root($root); |
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| 53 | $this->set_unknowns($unknowns); |
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| 54 | } |
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| 55 | |
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| 56 | /* public: setroot(pathname $root) |
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| 57 | * root: new template directory. |
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| 58 | */ |
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| 59 | function set_root($root) |
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| 60 | { |
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| 61 | if (!is_dir($root)) |
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| 62 | { |
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| 63 | $this->halt("set_root: $root is not a directory."); |
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| 64 | return false; |
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| 65 | } |
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| 66 | $this->root = $root; |
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| 67 | return true; |
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| 68 | } |
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| 69 | |
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| 70 | /* public: set_unknowns(enum $unknowns) |
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| 71 | * unknowns: 'remove', 'comment', 'keep' |
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| 72 | * |
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| 73 | */ |
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| 74 | function set_unknowns($unknowns = 'keep') |
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| 75 | { |
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| 76 | $this->unknowns = $unknowns; |
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| 77 | } |
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| 78 | |
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| 79 | /* public: set_file(array $filelist) |
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| 80 | * filelist: array of handle, filename pairs. |
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| 81 | * |
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| 82 | * public: set_file(string $handle, string $filename) |
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| 83 | * handle: handle for a filename, |
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| 84 | * filename: name of template file |
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| 85 | */ |
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| 86 | function set_file($handle, $filename = '') |
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| 87 | { |
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| 88 | if (!is_array($handle)) |
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| 89 | { |
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| 90 | if ($filename == '') |
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| 91 | { |
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| 92 | $this->halt("set_file: For handle $handle filename is empty."); |
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| 93 | return false; |
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| 94 | } |
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| 95 | $this->file[$handle] = $this->filename($filename); |
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| 96 | } |
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| 97 | else |
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| 98 | { |
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| 99 | reset($handle); |
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| 100 | while(list($h, $f) = each($handle)) |
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| 101 | { |
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| 102 | $this->file[$h] = $this->filename($f); |
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| 103 | } |
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| 104 | } |
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| 105 | } |
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| 106 | |
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| 107 | /* public: set_block(string $parent, string $handle, string $name = '') |
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| 108 | * extract the template $handle from $parent, |
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| 109 | * place variable {$name} instead. |
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| 110 | */ |
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| 111 | function set_block($parent, $handle, $name = '') |
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| 112 | { |
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| 113 | if (!$this->loadfile($parent)) |
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| 114 | { |
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| 115 | $this->halt("subst: unable to load $parent."); |
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| 116 | return false; |
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| 117 | } |
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| 118 | if ($name == '') |
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| 119 | { |
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| 120 | $name = $handle; |
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| 121 | } |
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| 122 | $str = $this->get_var($parent); |
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| 123 | $reg = "/<!--\s+BEGIN $handle\s+-->(.*)\n\s*<!--\s+END $handle\s+-->/sm"; |
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| 124 | preg_match_all($reg, $str, $m); |
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| 125 | $str = preg_replace($reg, '{' . "$name}", $str); |
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| 126 | $this->set_var($handle, $m[1][0]); |
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| 127 | $this->set_var($parent, $str); |
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| 128 | } |
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| 129 | |
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| 130 | /* public: set_var(array $values) |
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| 131 | * values: array of variable name, value pairs. |
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| 132 | * |
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| 133 | * public: set_var(string $varname, string $value) |
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| 134 | * varname: name of a variable that is to be defined |
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| 135 | * value: value of that variable |
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| 136 | */ |
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| 137 | function set_var($varname, $value = '') |
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| 138 | { |
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| 139 | if (!is_array($varname)) |
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| 140 | { |
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| 141 | if (!empty($varname)) |
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| 142 | { |
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| 143 | if ($this->debug) |
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| 144 | { |
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| 145 | print "scalar: set *$varname* to *$value*<br>\n"; |
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| 146 | } |
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| 147 | $this->varkeys[$varname] = $this->varname($varname); |
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| 148 | $this->varvals[$varname] = str_replace('phpGroupWare','eGroupWare',$value); |
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| 149 | } |
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| 150 | } |
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| 151 | else |
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| 152 | { |
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| 153 | reset($varname); |
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| 154 | while(list($k, $v) = each($varname)) |
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| 155 | { |
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| 156 | if (!empty($k)) |
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| 157 | { |
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| 158 | if ($this->debug) |
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| 159 | { |
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| 160 | print "array: set *$k* to *$v*<br>\n"; |
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| 161 | } |
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| 162 | $this->varkeys[$k] = $this->varname($k); |
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| 163 | $this->varvals[$k] = str_replace('phpGroupWare','eGroupWare',$v); |
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| 164 | } |
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| 165 | } |
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| 166 | } |
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| 167 | } |
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| 168 | |
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| 169 | /* public: subst(string $handle) |
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| 170 | * handle: handle of template where variables are to be substituted. |
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| 171 | */ |
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| 172 | function subst($handle) |
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| 173 | { |
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| 174 | if (!$this->loadfile($handle)) |
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| 175 | { |
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| 176 | $this->halt("subst: unable to load $handle."); |
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| 177 | return false; |
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| 178 | } |
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| 179 | |
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| 180 | $str = $this->get_var($handle); |
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| 181 | reset($this->varkeys); |
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| 182 | while (list($k, $v) = each($this->varkeys)) |
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| 183 | { |
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| 184 | $str = str_replace($v, $this->varvals[$k], $str); |
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| 185 | } |
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| 186 | return $str; |
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| 187 | } |
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| 188 | |
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| 189 | /* public: psubst(string $handle) |
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| 190 | * handle: handle of template where variables are to be substituted. |
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| 191 | */ |
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| 192 | function psubst($handle) |
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| 193 | { |
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| 194 | print $this->subst($handle); |
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| 195 | return false; |
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| 196 | } |
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| 197 | |
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| 198 | /* public: parse(string $target, string $handle, boolean append) |
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| 199 | * public: parse(string $target, array $handle, boolean append) |
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| 200 | * target: handle of variable to generate |
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| 201 | * handle: handle of template to substitute |
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| 202 | * append: append to target handle |
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| 203 | */ |
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| 204 | function parse($target, $handle, $append = false) |
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| 205 | { |
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| 206 | if (!is_array($handle)) |
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| 207 | { |
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| 208 | $str = $this->subst($handle); |
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| 209 | if ($append) |
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| 210 | { |
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| 211 | $this->set_var($target, $this->get_var($target) . $str); |
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| 212 | } |
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| 213 | else |
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| 214 | { |
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| 215 | $this->set_var($target, $str); |
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| 216 | } |
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| 217 | } |
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| 218 | else |
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| 219 | { |
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| 220 | reset($handle); |
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| 221 | while(list($i, $h) = each($handle)) |
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| 222 | { |
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| 223 | $str = $this->subst($h); |
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| 224 | $this->set_var($target, $str); |
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| 225 | } |
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| 226 | } |
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| 227 | return $str; |
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| 228 | } |
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| 229 | |
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| 230 | function pparse($target, $handle, $append = false) |
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| 231 | { |
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| 232 | print $this->parse($target, $handle, $append); |
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| 233 | return false; |
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| 234 | } |
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| 235 | |
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| 236 | /* This is short for finish parse */ |
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| 237 | function fp($target, $handle, $append = False) |
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| 238 | { |
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| 239 | return $this->finish($this->parse($target, $handle, $append)); |
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| 240 | } |
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| 241 | |
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| 242 | /* This is a short cut for print finish parse */ |
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| 243 | function pfp($target, $handle, $append = False) |
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| 244 | { |
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| 245 | echo $this->finish($this->parse($target, $handle, $append)); |
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| 246 | } |
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| 247 | |
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| 248 | /* public: get_vars() |
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| 249 | */ |
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| 250 | function get_vars() |
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| 251 | { |
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| 252 | reset($this->varkeys); |
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| 253 | while(list($k, $v) = each($this->varkeys)) |
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| 254 | { |
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| 255 | $result[$k] = $this->varvals[$k]; |
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| 256 | } |
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| 257 | return $result; |
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| 258 | } |
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| 259 | |
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| 260 | /* public: get_var(string varname) |
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| 261 | * varname: name of variable. |
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| 262 | * |
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| 263 | * public: get_var(array varname) |
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| 264 | * varname: array of variable names |
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| 265 | */ |
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| 266 | function get_var($varname) |
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| 267 | { |
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| 268 | if (!is_array($varname)) |
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| 269 | { |
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| 270 | return $this->varvals[$varname]; |
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| 271 | } |
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| 272 | else |
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| 273 | { |
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| 274 | reset($varname); |
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| 275 | while(list($k, $v) = each($varname)) |
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| 276 | { |
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| 277 | $result[$k] = $this->varvals[$k]; |
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| 278 | } |
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| 279 | return $result; |
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| 280 | } |
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| 281 | } |
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| 282 | |
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| 283 | /* public: get_undefined($handle) |
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| 284 | * handle: handle of a template. |
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| 285 | */ |
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| 286 | function get_undefined($handle) |
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| 287 | { |
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| 288 | if (!$this->loadfile($handle)) |
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| 289 | { |
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| 290 | $this->halt("get_undefined: unable to load $handle."); |
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| 291 | return false; |
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| 292 | } |
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| 293 | |
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| 294 | preg_match_all("/\{([^}]+)\}/", $this->get_var($handle), $m); |
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| 295 | $m = $m[1]; |
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| 296 | if (!is_array($m)) |
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| 297 | { |
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| 298 | return false; |
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| 299 | } |
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| 300 | reset($m); |
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| 301 | while(list($k, $v) = each($m)) |
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| 302 | { |
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| 303 | if (!isset($this->varkeys[$v])) |
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| 304 | { |
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| 305 | $result[$v] = $v; |
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| 306 | } |
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| 307 | } |
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| 308 | |
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| 309 | if (count($result)) |
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| 310 | { |
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| 311 | return $result; |
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| 312 | } |
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| 313 | else |
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| 314 | { |
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| 315 | return false; |
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| 316 | } |
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| 317 | } |
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| 318 | |
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| 319 | /* public: finish(string $str) |
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| 320 | * str: string to finish. |
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| 321 | */ |
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| 322 | function finish($str) |
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| 323 | { |
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| 324 | switch ($this->unknowns) |
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| 325 | { |
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| 326 | case 'keep': |
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| 327 | break; |
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| 328 | case 'remove': |
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| 329 | $str = preg_replace('/{[^ \t\r\n}]+}/', '', $str); |
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| 330 | break; |
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| 331 | case 'comment': |
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| 332 | $str = preg_replace('/{([^ \t\r\n}]+)}/', "<!-- Template $handle: Variable \\1 undefined -->", $str); |
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| 333 | break; |
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| 334 | } |
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| 335 | |
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| 336 | return $str; |
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| 337 | } |
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| 338 | |
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| 339 | /* public: p(string $varname) |
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| 340 | * varname: name of variable to print. |
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| 341 | */ |
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| 342 | function p($varname) |
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| 343 | { |
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| 344 | print $this->finish($this->get_var($varname)); |
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| 345 | } |
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| 346 | |
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| 347 | function get($varname) |
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| 348 | { |
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| 349 | return $this->finish($this->get_var($varname)); |
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| 350 | } |
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| 351 | |
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| 352 | /***************************************************************************/ |
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| 353 | /* private: filename($filename) |
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| 354 | * filename: name to be completed. |
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| 355 | */ |
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| 356 | function filename($filename,$root='',$time=1) |
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| 357 | { |
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| 358 | if($root=='') |
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| 359 | { |
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| 360 | $root=$this->root; |
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| 361 | } |
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| 362 | if (substr($filename, 0, 1) != '/') |
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| 363 | { |
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| 364 | $new_filename = $root.'/'.$filename; |
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| 365 | } |
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| 366 | else |
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| 367 | { |
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| 368 | $new_filename = $filename; |
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| 369 | } |
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| 370 | |
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| 371 | if (!file_exists($new_filename)) |
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| 372 | { |
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| 373 | if($time==2) |
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| 374 | { |
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| 375 | $this->halt("filename: file $new_filename does not exist."); |
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| 376 | } |
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| 377 | else |
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| 378 | { |
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| 379 | $new_root = str_replace($GLOBALS['phpgw_info']['server']['template_set'],'default',$root); |
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| 380 | $new_filename = $this->filename(str_replace($root.'/','',$new_filename),$new_root,2); |
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| 381 | } |
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| 382 | } |
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| 383 | return $new_filename; |
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| 384 | } |
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| 385 | |
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| 386 | /* private: varname($varname) |
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| 387 | * varname: name of a replacement variable to be protected. |
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| 388 | */ |
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| 389 | function varname($varname) |
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| 390 | { |
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| 391 | return '{'.$varname.'}'; |
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| 392 | } |
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| 393 | |
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| 394 | /* private: loadfile(string $handle) |
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| 395 | * handle: load file defined by handle, if it is not loaded yet. |
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| 396 | */ |
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| 397 | function loadfile($handle) |
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| 398 | { |
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| 399 | if (isset($this->varkeys[$handle]) and !empty($this->varvals[$handle])) |
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| 400 | { |
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| 401 | return true; |
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| 402 | } |
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| 403 | if (!isset($this->file[$handle])) |
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| 404 | { |
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| 405 | $this->halt("loadfile: $handle is not a valid handle."); |
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| 406 | return false; |
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| 407 | } |
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| 408 | $filename = $this->file[$handle]; |
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| 409 | |
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| 410 | $str = implode('', @file($filename)); |
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| 411 | if (empty($str)) |
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| 412 | { |
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| 413 | $this->halt("loadfile: While loading $handle, $filename does not exist or is empty."); |
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| 414 | return false; |
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| 415 | } |
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| 416 | |
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| 417 | $this->set_var($handle, $str); |
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| 418 | return true; |
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| 419 | } |
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| 420 | |
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| 421 | /***************************************************************************/ |
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| 422 | /* public: halt(string $msg) |
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| 423 | * msg: error message to show. |
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| 424 | */ |
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| 425 | function halt($msg) |
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| 426 | { |
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| 427 | $this->last_error = $msg; |
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| 428 | |
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| 429 | if ($this->halt_on_error != 'no') |
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| 430 | { |
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| 431 | $this->haltmsg($msg); |
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| 432 | } |
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| 433 | |
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| 434 | if ($this->halt_on_error == 'yes') |
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| 435 | { |
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| 436 | echo('<b>Halted.</b>'); |
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| 437 | } |
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| 438 | |
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| 439 | exit; |
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| 440 | } |
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| 441 | |
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| 442 | /* public, override: haltmsg($msg) |
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| 443 | * msg: error message to show. |
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| 444 | */ |
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| 445 | function haltmsg($msg) |
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| 446 | { |
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| 447 | printf("<b>Template Error:</b> %s<br>\n", $msg); |
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| 448 | } |
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| 449 | } |
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