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 eGroupWare, 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 | /** |
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21 | * @var $rb_debug mixed False for no debug, string or array of strings with: |
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22 | * - function-name like set_var to get eg. all assignments or |
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23 | * - handle- / variable-names - if you are only interested in some variables ;-) |
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24 | */ |
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25 | var $debug = False; // array('cat_list','cat_list_t'); |
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26 | |
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27 | /* $file[handle] = 'filename'; */ |
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28 | var $file = array(); |
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29 | |
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30 | /* relative filenames are relative to this pathname */ |
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31 | var $root = ''; |
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32 | |
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33 | /* $varkeys[key] = 'key'; $varvals[key] = 'value'; */ |
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34 | var $varkeys = array(); |
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35 | var $varvals = array(); |
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36 | |
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37 | /* 'remove' => remove undefined variables |
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38 | * 'comment' => replace undefined variables with comments |
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39 | * 'keep' => keep undefined variables |
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40 | */ |
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41 | var $unknowns = 'remove'; |
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42 | |
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43 | /* 'yes' => halt, 'report' => report error, continue, 'no' => ignore error quietly */ |
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44 | var $halt_on_error = 'yes'; |
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45 | |
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46 | /* last error message is retained here */ |
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47 | var $last_error = ''; |
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48 | |
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49 | // if true change all phpGroupWare into eGroupWare in set_var |
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50 | var $egroupware_hack = True; |
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51 | |
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52 | /***************************************************************************/ |
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53 | /* public: Constructor. |
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54 | * root: template directory. |
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55 | * unknowns: how to handle unknown variables. |
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56 | */ |
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57 | function Template($root = '.', $unknowns = 'remove') |
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58 | { |
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59 | $this->set_root($root); |
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60 | $this->set_unknowns($unknowns); |
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61 | } |
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62 | |
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63 | /* public: setroot(pathname $root) |
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64 | * root: new template directory. |
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65 | */ |
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66 | function set_root($root) |
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67 | { |
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68 | if ($this->debug && $this->check_debug('set_root')) |
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69 | { |
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70 | echo "<p>Template::set_root('$root')</p>\n"; |
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71 | } |
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72 | if (!is_dir($root)) |
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73 | { |
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74 | $this->halt("set_root: $root is not a directory."); |
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75 | return false; |
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76 | } |
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77 | $this->root = $root; |
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78 | return true; |
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79 | } |
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80 | |
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81 | /* public: set_unknowns(enum $unknowns) |
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82 | * unknowns: 'remove', 'comment', 'keep' |
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83 | * |
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84 | */ |
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85 | function set_unknowns($unknowns = 'keep') |
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86 | { |
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87 | if ($this->debug && $this->check_debug('set_unknows')) |
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88 | { |
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89 | echo "<p>Template::set_unknows('$unknowns')</p>\n"; |
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90 | } |
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91 | $this->unknowns = $unknowns; |
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92 | } |
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93 | |
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94 | /* public: set_file(array $filelist) |
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95 | * filelist: array of handle, filename pairs. |
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96 | * |
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97 | * public: set_file(string $handle, string $filename) |
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98 | * handle: handle for a filename, |
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99 | * filename: name of template file |
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100 | */ |
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101 | function set_file($handle, $filename = '') |
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102 | { |
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103 | if ($this->debug && $this->check_debug('set_file',$handle,$filename)) |
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104 | { |
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105 | echo "<p>Template::set_file('".print_r($handle,true)."','$filename')</p>\n"; |
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106 | } |
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107 | if (!is_array($handle)) |
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108 | { |
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109 | if ($filename == '') |
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110 | { |
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111 | $this->halt("set_file: For handle $handle filename is empty."); |
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112 | return false; |
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113 | } |
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114 | $this->file[$handle] = $this->filename($filename); |
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115 | } |
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116 | else |
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117 | { |
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118 | foreach($handle as $h => $f) |
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119 | { |
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120 | $this->file[$h] = $this->filename($f); |
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121 | } |
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122 | } |
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123 | } |
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124 | |
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125 | /* public: set_block(string $parent, string $handle, string $name = '') |
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126 | * extract the template $handle from $parent, |
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127 | * place variable {$name} instead. |
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128 | */ |
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129 | function set_block($parent, $handle, $name = '') |
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130 | { |
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131 | if ($this->debug && $this->check_debug('set_block',$parent,$handle,$name)) |
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132 | { |
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133 | echo "<p>Template::set_block('$parent','$handle','$name')</p>\n"; |
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134 | } |
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135 | if (!$this->loadfile($parent)) |
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136 | { |
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137 | $this->halt("set_block: unable to load '$parent'."); |
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138 | return false; |
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139 | } |
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140 | if ($name == '') |
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141 | { |
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142 | $name = $handle; |
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143 | } |
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144 | $str = $this->get_var($parent); |
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145 | $qhandle = preg_quote($handle); |
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146 | $reg = "/<!--\\s+BEGIN $qhandle\\s+-->(.*)\n\\s*<!--\\s+END $qhandle\\s+-->/s"; |
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147 | if (!preg_match($reg,$str,$match)) |
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148 | { |
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149 | // unfortunaly some apps set non-existing blocks, therefor I have to disable this diagnostics again for now |
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150 | // $this->halt("set_block: unable to find block '$handle' in '$parent'."); |
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151 | // return False; |
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152 | } |
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153 | $this->set_var($handle,$match[1]); |
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154 | $this->set_var($parent,preg_replace($reg, '{' . "$name}",$str)); |
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155 | } |
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156 | |
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157 | /* public: set_var(array $values) |
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158 | * values: array of variable name, value pairs. |
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159 | * |
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160 | * public: set_var(string $varname, string $value) |
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161 | * varname: name of a variable that is to be defined |
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162 | * value: value of that variable |
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163 | */ |
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164 | function set_var($varname, $value = '') |
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165 | { |
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166 | if (!is_array($varname)) |
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167 | { |
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168 | if (empty($varname)) |
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169 | { |
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170 | return; |
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171 | } |
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172 | $varname = array( |
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173 | $varname => $value |
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174 | ); |
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175 | } |
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176 | foreach($varname as $k => $v) |
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177 | { |
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178 | if (!empty($k)) |
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179 | { |
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180 | if ($this->debug && $this->check_debug('set_var',$k)) |
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181 | { |
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182 | echo "<p>Template::set_var('$k','$v')</p>\n"; |
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183 | } |
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184 | $this->varkeys[$k] = $this->varname($k); |
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185 | $this->varvals[$k] = $this->egroupware_hack ? str_replace( |
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186 | array('phpGroupWare','www.phpgroupware.org'), |
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187 | array('eGroupWare','www.eGroupWare.org'),$v |
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188 | ) : $v; |
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189 | } |
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190 | } |
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191 | } |
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192 | |
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193 | /* public: subst(string $handle) |
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194 | * handle: handle of template where variables are to be substituted. |
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195 | */ |
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196 | function subst($handle) |
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197 | { |
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198 | if ($this->debug && $this->check_debug('subst',$handle)) |
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199 | { |
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200 | echo "<p>Template::subst('$handle')</p>\n"; |
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201 | } |
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202 | if (!$this->loadfile($handle)) |
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203 | { |
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204 | $this->halt("subst: unable to load $handle."); |
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205 | return false; |
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206 | } |
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207 | |
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208 | $str = $this->get_var($handle); |
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209 | foreach($this->varkeys as $k => $v) |
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210 | { |
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211 | $str = str_replace($v, $this->varvals[$k], $str); |
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212 | } |
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213 | return $str; |
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214 | } |
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215 | |
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216 | /* public: psubst(string $handle) |
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217 | * handle: handle of template where variables are to be substituted. |
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218 | */ |
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219 | function psubst($handle) |
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220 | { |
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221 | print $this->subst($handle); |
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222 | return false; |
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223 | } |
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224 | |
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225 | /* public: parse(string $target, string $handle, boolean append) |
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226 | * target: handle of variable to generate |
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227 | * handle: handle of template to substitute |
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228 | * append: append to target handle |
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229 | */ |
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230 | function parse($target, $handle, $append = false) |
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231 | { |
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232 | if (!is_array($handle)) |
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233 | { |
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234 | $str = $this->subst($handle); |
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235 | if ($append) |
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236 | { |
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237 | $this->set_var($target, $this->get_var($target) . $str); |
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238 | } |
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239 | else |
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240 | { |
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241 | $this->set_var($target, $str); |
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242 | } |
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243 | } |
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244 | else |
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245 | { |
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246 | foreach($handle as $i => $h) |
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247 | { |
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248 | $str = $this->subst($h); |
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249 | $this->set_var($target, $str); |
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250 | } |
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251 | } |
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252 | if ($GLOBALS['phpgw_info']['server']['html_minifier'] == "True"){ |
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253 | $pattern = '/(<!--.*-->|[\n\t])/i'; |
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254 | return preg_replace($pattern, '', $str); |
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255 | } |
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256 | else |
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257 | return $str; |
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258 | } |
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259 | |
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260 | function pparse($target, $handle, $append = false) |
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261 | { |
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262 | print $this->parse($target, $handle, $append); |
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263 | return false; |
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264 | } |
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265 | |
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266 | /* This is short for finish parse */ |
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267 | function fp($target, $handle, $append = False) |
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268 | { |
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269 | return $this->finish($this->parse($target, $handle, $append)); |
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270 | } |
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271 | |
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272 | /* This is a short cut for print finish parse */ |
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273 | function pfp($target, $handle, $append = False) |
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274 | { |
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275 | echo $this->finish($this->parse($target, $handle, $append)); |
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276 | } |
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277 | |
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278 | /* public: get_vars() |
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279 | */ |
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280 | function get_vars() |
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281 | { |
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282 | foreach($this->varkeys as $k => $v) |
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283 | { |
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284 | $result[$k] = $this->varvals[$k]; |
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285 | } |
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286 | return $result; |
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287 | } |
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288 | |
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289 | /* public: get_var(string varname) |
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290 | * varname: name of variable. |
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291 | * |
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292 | * public: get_var(array varname) |
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293 | * varname: array of variable names |
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294 | */ |
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295 | function get_var($varname) |
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296 | { |
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297 | if (!is_array($varname)) |
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298 | { |
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299 | return $this->varvals[$varname]; |
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300 | } |
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301 | else |
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302 | { |
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303 | foreach($varname as $k => $v) |
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304 | { |
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305 | $result[$k] = $this->varvals[$k]; |
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306 | } |
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307 | return $result; |
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308 | } |
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309 | } |
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310 | |
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311 | /* public: get_undefined($handle) |
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312 | * handle: handle of a template. |
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313 | */ |
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314 | function get_undefined($handle) |
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315 | { |
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316 | if (!$this->loadfile($handle)) |
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317 | { |
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318 | $this->halt("get_undefined: unable to load $handle."); |
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319 | return false; |
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320 | } |
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321 | |
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322 | preg_match_all("/\{([^}]+)\}/", $this->get_var($handle), $m); |
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323 | $m = $m[1]; |
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324 | if (!is_array($m)) |
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325 | { |
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326 | return false; |
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327 | } |
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328 | foreach($m as $k => $v) |
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329 | { |
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330 | if (!isset($this->varkeys[$v])) |
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331 | { |
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332 | $result[$v] = $v; |
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333 | } |
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334 | } |
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335 | |
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336 | if (count($result)) |
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337 | { |
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338 | return $result; |
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339 | } |
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340 | else |
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341 | { |
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342 | return false; |
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343 | } |
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344 | } |
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345 | |
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346 | /* public: finish(string $str) |
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347 | * str: string to finish. |
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348 | */ |
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349 | function finish($str) |
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350 | { |
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351 | switch ($this->unknowns) |
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352 | { |
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353 | case 'keep': |
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354 | break; |
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355 | case 'remove': |
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356 | $str = preg_replace('/{[^ \t\r\n}]+}/', '', $str); |
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357 | break; |
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358 | case 'comment': |
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359 | $str = preg_replace('/{([^ \t\r\n}]+)}/', "<!-- Template $handle: Variable \\1 undefined -->", $str); |
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360 | break; |
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361 | } |
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362 | |
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363 | return $str; |
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364 | } |
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365 | |
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366 | /* public: p(string $varname) |
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367 | * varname: name of variable to print. |
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368 | */ |
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369 | function p($varname) |
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370 | { |
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371 | print $this->finish($this->get_var($varname)); |
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372 | } |
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373 | |
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374 | function get($varname) |
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375 | { |
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376 | return $this->finish($this->get_var($varname)); |
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377 | } |
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378 | |
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379 | /***************************************************************************/ |
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380 | /* private: filename($filename) |
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381 | * filename: name to be completed. |
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382 | */ |
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383 | function filename($filename,$root='',$time=1) |
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384 | { |
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385 | if($root == '') |
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386 | { |
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387 | $root = $this->root; |
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388 | } |
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389 | if(substr($filename, 0, 1) != '/') |
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390 | { |
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391 | $new_filename = $root . '/' . $filename; |
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392 | } |
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393 | else |
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394 | { |
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395 | $new_filename = $filename; |
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396 | } |
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397 | |
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398 | if (!file_exists($new_filename)) |
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399 | { |
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400 | if($time==2) |
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401 | { |
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402 | $this->halt("filename: file $new_filename does not exist."); |
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403 | } |
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404 | else |
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405 | { |
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406 | // $new_root = str_replace($GLOBALS['phpgw_info']['server']['template_set'],'default',$root); |
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407 | // $new_root = substr($root, 0, strrpos($root, $GLOBALS['phpgw_info']['server']['template_set'])).'default'; |
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408 | $new_root = substr($root, 0, strlen($root) - strlen($GLOBALS['phpgw_info']['server']['template_set'])) . 'default'; |
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409 | $new_filename = $this->filename(str_replace($root.'/','',$new_filename),$new_root,2); |
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410 | } |
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411 | } |
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412 | return $new_filename; |
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413 | } |
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414 | |
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415 | /* private: varname($varname) |
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416 | * varname: name of a replacement variable to be protected. |
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417 | */ |
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418 | function varname($varname) |
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419 | { |
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420 | return '{'.$varname.'}'; |
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421 | } |
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422 | |
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423 | /* private: loadfile(string $handle) |
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424 | * handle: load file defined by handle, if it is not loaded yet. |
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425 | */ |
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426 | function loadfile($handle) |
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427 | { |
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428 | if ($this->debug && $this->check_debug('loadfile',$handle)) |
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429 | { |
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430 | echo "<p>Template::loadfile('$handle') file=<pre>\n".print_r($this->file,True)."</pre>\n"; |
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431 | echo "<p>backtrace: ".function_backtrace()."</p>\n"; |
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432 | } |
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433 | if (isset($this->varkeys[$handle]) && !empty($this->varvals[$handle])) |
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434 | { |
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435 | return true; |
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436 | } |
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437 | if (!isset($this->file[$handle])) |
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438 | { |
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439 | if ($this->debug && $this->check_debug('loadfile',$handle)) |
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440 | { |
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441 | echo "varkeys =<pre>".print_r($this->varkeys,True)."</pre>varvals =<pre>".print_r($this->varvals,True)."</pre>\n"; |
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442 | } |
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443 | $this->halt("loadfile: $handle is not a valid handle."); |
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444 | return false; |
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445 | } |
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446 | $filename = $this->file[$handle]; |
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447 | |
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448 | $str = implode('', @file($filename)); |
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449 | if (empty($str)) |
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450 | { |
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451 | $this->halt("loadfile: While loading $handle, $filename does not exist or is empty."); |
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452 | return false; |
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453 | } |
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454 | |
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455 | $this->set_var($handle, $str); |
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456 | return true; |
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457 | } |
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458 | |
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459 | /***************************************************************************/ |
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460 | /* public: halt(string $msg) |
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461 | * msg: error message to show. |
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462 | */ |
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463 | function halt($msg) |
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464 | { |
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465 | $this->last_error = $msg; |
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466 | |
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467 | if ($this->halt_on_error != 'no') |
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468 | { |
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469 | $this->haltmsg($msg); |
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470 | } |
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471 | |
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472 | if ($this->halt_on_error == 'yes') |
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473 | { |
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474 | echo('<b>Halted.</b>'); |
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475 | } |
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476 | |
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477 | $GLOBALS['phpgw']->common->phpgw_exit(True); |
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478 | } |
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479 | |
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480 | /* public, override: haltmsg($msg) |
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481 | * msg: error message to show. |
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482 | */ |
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483 | function haltmsg($msg) |
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484 | { |
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485 | printf("<b>Template Error:</b> %s<br>\n", $msg); |
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486 | echo "<b>Backtrace</b>: ".function_backtrace(2)."<br>\n"; |
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487 | } |
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488 | |
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489 | function check_debug($str) |
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490 | { |
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491 | if (!$this->debug) return False; |
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492 | |
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493 | foreach(func_get_args() as $arg) |
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494 | { |
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495 | if (!is_array($this->debug) && $this->debug === $arg || |
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496 | (is_array($this->debug) && (@$this->debug[$arg] || in_array($arg,$this->debug,True)))) |
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497 | { |
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498 | return True; |
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499 | } |
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500 | } |
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501 | return False; |
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502 | } |
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503 | } |
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