771 lines
20 KiB
Plaintext
771 lines
20 KiB
Plaintext
# Контекстно-свободная Parse::Yapp-грамматика шаблонизатора
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#
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# {{ двойные скобки }} нужно исключительно чтобы маркеры начала и конца подстановки
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# были уникальны в грамматике. Вместо них обычно используются { одинарные }, а
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# выбор корректной лексемы - скобки или маркера - делает лексический анализатор.
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# Но зато вместо { фигурных скобок } можно выбрать себе любые другие маркеры!
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#
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# Все выражения представляются массивом из двух значений: [ код выражения, флаг экранирования ]
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# Флаг экранирования == true, если это выражение HTML-безопасно. При включённом auto_escape
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# небезопасные выражения прогоняются через экранирование.
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#
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# Кстати:
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# * Олдстайл BEGIN .. END ликвидирован
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# * Возможно, нужно добавить в каком-то виде foreach ... as key => value
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#
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# P.S: Комментарии типа "#{" и "#}" служат, чтобы тупой Parse::Yapp понимал парные скобки
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%{
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VMXTemplate::Utils::import();
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%}
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%start template
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%token literal
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%token name
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%token '..'
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%token '||'
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%token 'OR'
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%token 'XOR'
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%token 'AND'
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%token '&&'
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%token '&'
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%token '=='
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%token '!='
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%token '<'
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%token '>'
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%token '<='
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%token '>='
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%token '+'
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%token '-'
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%token '*'
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%token '/'
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%token '%'
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%token '('
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%token ')'
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%token '!'
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%token 'NOT'
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%token '{'
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%token '}'
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%token ','
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%token '=>'
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%token '['
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%token ']'
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%token '<!--'
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%token '-->'
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%token '{{'
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%token '}}'
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%left '..'
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%left '||' 'OR' 'XOR'
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%left '&&' 'AND'
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%nonassoc '==' '!=' '<' '>' '<=' '>='
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%left '+' '-'
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%left '&'
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%left '*' '/' '%'
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# Директивы
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%%
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template: chunks {
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$_[0]->{template}->{st}->{functions}->{main}->{body} = "sub fn_main() {\nmy \$stack = [];\nmy \$t = '';\n".$_[1]."\nreturn \$t;\n}\n";
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'';
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}
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;
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chunks: {
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'';
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}
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| chunks chunk {
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$_[1] . $_[2];
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}
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;
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chunk: literal {
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'$t .= ' . $_[1] . ";\n";
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}
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| '<!--' code_chunk '-->' {
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$_[2];
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}
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| '{{' exp '}}' {
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'$t .= ' . ($_[2][1] || !$_[0]->{template}->{options}->{auto_escape} ? $_[2][0] : $_[0]->{template}->compile_function($_[0]->{template}->{options}->{auto_escape}, [ $_[2] ])->[0]) . ";\n";
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}
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| error {
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'';
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}
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;
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code_chunk: c_if | c_set | c_fn | c_for | exp {
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'$t .= ' . ($_[1][1] || !$_[0]->{template}->{options}->{auto_escape} ? $_[1][0] : $_[0]->{template}->compile_function($_[0]->{template}->{options}->{auto_escape}, [ $_[1] ])->[0]) . ";\n";
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}
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;
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c_if: 'IF' exp '-->' chunks '<!--' 'END' {
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"if (" . $_[2][0] . ") {\n" . $_[4] . "}\n";
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}
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| 'IF' exp '-->' chunks '<!--' 'ELSE' '-->' chunks '<!--' 'END' {
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"if (" . $_[2][0] . ") {\n" . $_[4] . "} else {\n" . $_[8] . "}\n";
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}
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| 'IF' exp '-->' chunks c_elseifs chunks '<!--' 'END' {
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"if (" . $_[2][0] . ") {\n" . $_[4] . $_[5] . $_[6] . "}\n";
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}
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| 'IF' exp '-->' chunks c_elseifs chunks '<!--' 'ELSE' '-->' chunks '<!--' 'END' {
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"if (" . $_[2][0] . ") {\n" . $_[4] . $_[5] . $_[6] . "} else {\n" . $_[10] . "}\n";
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}
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;
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c_elseifs: '<!--' elseif exp '-->' {
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#{
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"} elsif (" . $_[3][0] . ") {\n";
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#}
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}
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| c_elseifs chunks '<!--' elseif exp '-->' {
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#{
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$_[1] . $_[2] . "} elsif (" . $_[5][0] . ") {\n";
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#}
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}
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;
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c_set: 'SET' varref '=' exp {
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$_[2][0] . ' = ' . $_[4][0] . ";\n";
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}
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| 'SET' varref '-->' chunks '<!--' 'END' {
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"push \@\$stack, \$t;\n\$t = '';\n" . $_[4] . $_[2][0] . " = \$t;\n\$t = pop(\@\$stack);\n";
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}
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;
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c_fn: fn name '(' arglist ')' '=' exp {
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$_[0]->{template}->{st}->{functions}->{$_[2]} = {
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'name' => $_[2],
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'args' => $_[4],
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'body' => 'sub fn_'.$_[2]." () {\nreturn ".$_[7].";\n}\n",
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#'line' => $line, Ой, я чо - аргументы не юзаю?
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#'pos' => $pos,
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};
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'';
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}
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| fn name '(' arglist ')' '-->' chunks '<!--' 'END' {
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$_[0]->{template}->{st}->{functions}->{$_[2]} = {
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'name' => $_[2],
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'args' => $_[4],
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'body' => 'sub fn_'.$_[2]." () {\nmy \$stack = [];\nmy \$t = '';\n".$_[7]."\nreturn \$t;\n}\n",
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#'line' => $line,
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#'pos' => $pos,
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};
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'';
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}
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;
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c_for: for varref '=' exp '-->' chunks '<!--' 'END' {
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my @varref = @{$_[2]};
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my @exp = @_{$_[4]};
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my $cs = $_[6];
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#{
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my $varref_index = substr($varref[0], 0, -1) . ".'_index'}";
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"push \@\$stack, ".$varref[0].", ".$varref_index.", 0;
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foreach my \$item (array1($exp[0])) {
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".$varref[0]." = \$item;
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".$varref_index." = \$stack[count(\$stack)-1]++;
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".$cs."}
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pop \@\$stack;
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".$varref_index." = pop(\@\$stack);
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".$varref[0]." = pop(\@\$stack);
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";
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}
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;
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fn: 'FUNCTION' | 'BLOCK' | 'MACRO' ;
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for: 'FOR' | 'FOREACH' ;
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elseif: 'ELSE' 'IF' | 'ELSIF' | 'ELSEIF' ;
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# Выражения
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exp: exp '..' exp {
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[ '(' . $_[1][0] . ' . ' . $_[3][0] . ')', $_[1][1] && $_[3][1] ];
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}
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| exp '||' exp {
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[ '(' . $_[1][0] . ' || ' . $_[3][0] . ')', $_[1][1] && $_[3][1] ];
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}
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| exp 'OR' exp {
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[ '(' . $_[1][0] . ' || ' . $_[3][0] . ')', $_[1][1] && $_[3][1] ];
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}
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| exp 'XOR' exp {
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[ '(' . $_[1][0] . ' XOR ' . $_[3][0] . ')', 1 ];
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}
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| exp '&&' exp {
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[ '(' . $_[1][0] . ' && ' . $_[3][0] . ')', 1 ];
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}
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| exp 'AND' exp {
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[ '(' . $_[1][0] . ' && ' . $_[3][0] . ')', 1 ];
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}
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| exp '==' exp {
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[ '$self->eq(' . $_[1][0] . ', ' . $_[3][0] . ')', 1 ];
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}
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| exp '!=' exp {
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[ '!$self->eq(' . $_[1][0] . ', ' . $_[3][0] . ')', 1 ];
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}
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| exp '<' exp {
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[ '$self->lt(' . $_[1][0] . ', ' . $_[3][0] . ')', 1 ];
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}
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| exp '>' exp {
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[ '$self->gt(' . $_[1][0] . ', ' . $_[3][0] . ')', 1 ];
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}
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| exp '<=' exp {
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[ '!$self->gt(' . $_[1][0] . ', ' . $_[3][0] . ')', 1 ];
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}
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| exp '>=' exp {
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[ '!$self->lt(' . $_[1][0] . ', ' . $_[3][0] . ')', 1 ];
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}
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| exp '+' exp {
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[ '(' . $_[1][0] . ' + ' . $_[3][0] . ')', 1 ];
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}
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| exp '-' exp {
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[ '(' . $_[1][0] . ' - ' . $_[3][0] . ')', 1 ];
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}
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| exp '&' exp {
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[ '(' . $_[1][0] . ' & ' . $_[3][0] . ')', 1 ];
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}
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| exp '*' exp {
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[ '(' . $_[1][0] . ' * ' . $_[3][0] . ')', 1 ];
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}
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| exp '/' exp {
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[ '(' . $_[1][0] . ' / ' . $_[3][0] . ')', 1 ];
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}
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| exp '%' exp {
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[ '(' . $_[1][0] . ' % ' . $_[3][0] . ')', 1 ];
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}
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| p10
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;
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p10: p11
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| '-' p11 {
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[ '(-'.$_[2][0].')', 1 ];
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}
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;
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p11: nonbrace
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| '(' exp ')' varpath {
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[ '('.$_[2][0].')'.$_[4], 0 ];
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}
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| '!' p11 {
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[ '(!'.$_[2][0].')', 1 ];
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}
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| 'NOT' p11 {
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[ '(!'.$_[2][0].')', 1 ];
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}
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;
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nonbrace: '{' hash '}' {
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[ "{ " . $_[2] . " }", 1 ];
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}
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| literal {
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[ $1, 1 ];
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}
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| varref
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| name '(' ')' {
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$_[0]->{template}->compile_function($_[1], []);
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}
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| name '(' list ')' {
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$_[0]->{template}->compile_function($_[1], $_[3]);
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}
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| name '(' gthash ')' {
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[ "\$self->{parent}->call_block('".addcslashes($_[1], "'\\")."', { ".$_[3]." }, '".addcslashes($_[0]->{__lexer}->errorinfo(), "'\\")."')", 1 ];
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}
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| name nonbrace {
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$_[0]->{template}->compile_function($_[1], [ $_[3] ]);
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}
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| method '(' ')' {
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[ $_[1].'()', 1 ];
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}
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| method '(' list ')' {
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my $argv = [];
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foreach my $a (@{$_[3]}) {
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push @$argv, $a->[0];
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}
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[ $_[1].'('.join(', ', @$argv).')', 1 ];
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}
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;
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method: varref '.' name {
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$_[1][0].'->'.$_[3];
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}
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;
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list: exp {
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[ $_[1] ];
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}
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| exp ',' list {
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[ $_[1], @{$_[3]} ];
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}
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;
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arglist: name {
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[ $_[1] ];
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}
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| name ',' arglist {
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[ $_[1], @{$_[3]} ];
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}
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| {
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[];
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}
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;
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hash: pair
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| pair ',' hash {
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$_[1] . ', ' . $_[3];
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}
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| {
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'';
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}
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;
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gthash: gtpair
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| gtpair ',' gthash {
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$_[1] . ', ' . $_[3];
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}
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;
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pair: exp ',' exp {
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$_[1][0] . ' => ' . $_[3][0];
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}
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| gtpair
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;
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gtpair: exp '=>' exp {
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$_[1][0] . ' => ' . $_[3][0];
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}
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;
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varref: name {
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[ "\$self->{tpldata}{'".addcslashes($_[1], "\\\'")."'}", 0 ];
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}
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| varref varpart {
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[ $_[1][0] . $_[2], 0 ];
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}
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;
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varpart: '.' name {
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"{'".addcslashes($_[1], "\\\'")."'}";
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}
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| '[' exp ']' {
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($_[2][1] eq 'i' ? '['.$_[2][0].']' : "{".$_[2][0]."}");
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}
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;
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varpath: {
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'';
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}
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| varpath varpart {
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$_[1] . $_[2];
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}
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;
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%%
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# Possible tokens consisting of special characters
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my $chartokens = '+ - = * / % ! , . < > ( ) { } [ ] & .. || && == != <= >= =>';
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# Reserved keywords
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my $keywords_str = 'OR XOR AND NOT IF ELSE ELSIF ELSEIF END SET FOR FOREACH FUNCTION BLOCK MACRO';
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sub _Lexer
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{
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my ($parser) = shift;
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return $parser->{__lexer}->read_token;
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}
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sub _error
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{
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my ($self) = @_;
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$self->{__lexer}->warn('Unexpected ' . $self->YYCurtok . ($self->YYCurval ? ' ' . $self->YYCurval : ''));
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$self->{__lexer}->skip_error;
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}
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sub compile
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{
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my ($self, $text) = @_;
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$self->{__lexer} ||= new VMXTemplate::Lexer($self, $self->{__options});
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$self->{__lexer}->set_code($text);
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$self->YYParse(yylex => \&_Lexer, yyerror => \&_error);
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}
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package VMXTemplate::Lexer;
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sub new
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{
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my $class = shift;
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$class = ref($class) || $class;
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my ($options) = @_;
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my $self = bless {
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options => $options,
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# Input
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code => '',
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eaten => '',
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lineno => 0,
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# Preprocessed keyword tokens
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nchar => {},
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lens => [],
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keywords => { map { $_ => 1 } split / /, $keywords_str },
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# Last directive start position, directive and substitution start/end counters
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last_start => 0,
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last_start_line => 0,
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in_code => 0,
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in_subst => 0,
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}, $class;
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foreach (split(/ /, $chartokens))
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{
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$self->{nchar}{length($_)}{$_} = 1;
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}
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# Add code fragment finishing tokens
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$self->{nchar}{length($self->{options}->{end_code})}{$self->{options}->{end_code}} = 1;
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if ($self->{options}->{end_subst})
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{
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$self->{nchar}{length($self->{options}->{end_subst})}{$self->{options}->{end_subst}} = 1;
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}
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# Reverse-sort lengths
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$self->{lens} = [ sort { $b <=> $a } keys %{$self->{nchar}} ];
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return $self;
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}
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sub set_code
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{
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my $self = shift;
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my ($code) = @_;
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$self->{code} = $code;
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$self->{eaten} = '';
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$self->{lineno} = $self->{in_code} = $self->{in_subst} = 0;
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$self->{last_start} = $self->{last_start_line} = 0;
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}
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sub eat
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{
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my $self = shift;
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my ($len) = @_;
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my $str = substr($self->{code}, 0, $len, '');
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$self->{eaten} .= $str;
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$self->{lineno} += ($str =~ tr/\n/\n/);
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return $str;
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}
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sub skip_error
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{
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my ($self) = @_;
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$self->{code} = substr($self->{eaten}, $self->{last_start}+1, length($self->{eaten}), '') . $self->{code};
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$self->{lineno} = $self->{last_start_line};
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$self->{in_code} = $self->{in_subst} = 0;
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}
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sub read_token
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{
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my $self = shift;
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if (!length $self->{code})
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{
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# End of code
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return;
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}
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if ($self->{in_code} <= 0 && $self->{in_subst} <= 0)
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{
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my $r;
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my $code_pos = index($self->{code}, $self->{options}->{begin_code});
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my $subst_pos = index($self->{code}, $self->{options}->{begin_subst});
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if ($code_pos == -1 && $subst_pos == -1)
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{
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# No more directives
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$r = [ 'literal', "'".addcslashes($self->eat(length $self->{code}), "'\\")."'" ];
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}
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elsif ($subst_pos == -1 || $code_pos >= 0 && $subst_pos > $code_pos)
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{
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# Code starts closer
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if ($code_pos > 0)
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{
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# We didn't yet reach the code beginning
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my $str = $self->eat($code_pos);
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if ($self->{options}->{eat_code_line})
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{
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$str =~ s/\n[ \t]*$/\n/s;
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}
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$r = [ 'literal', "'".addcslashes($str, "'\\")."'" ];
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}
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else
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{
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# We are at the code beginning
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my $i = length $self->{options}->{begin_code};
|
||
if ($self->{code} =~ /^.{$i}([ \t]+)/s)
|
||
{
|
||
$i += length $1;
|
||
}
|
||
if ($i < length($self->{code}) && substr($self->{code}, $i, 1) eq '#')
|
||
{
|
||
# Strip comment and retry
|
||
$i = index($self->{code}, $self->{options}->{end_code}, $i);
|
||
$i = $i >= 0 ? $i+length($self->{options}->{end_code}) : length $self->{code};
|
||
$self->eat($i);
|
||
return $self->read_token();
|
||
}
|
||
$r = [ '<!--', $self->{options}->{begin_code} ];
|
||
$self->{last_start} = length $self->{eaten};
|
||
$self->{last_start_line} = $self->{lineno};
|
||
$self->eat(length $self->{options}->{begin_code});
|
||
$self->{in_code} = 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
# Substitution is closer
|
||
if ($subst_pos > 0)
|
||
{
|
||
$r = [ 'literal', "'".addcslashes($self->eat($subst_pos), "'\\")."'" ];
|
||
}
|
||
else
|
||
{
|
||
$r = [ '{{', $self->{options}->{begin_subst} ];
|
||
$self->{last_start} = length $self->{eaten};
|
||
$self->{last_start_line} = $self->{lineno};
|
||
$self->eat(length $self->{options}->{begin_subst});
|
||
$self->{in_subst} = 1;
|
||
}
|
||
}
|
||
return @$r;
|
||
}
|
||
# Skip whitespace
|
||
if ($self->{code} =~ /^(\s+)/)
|
||
{
|
||
$self->eat(length $1);
|
||
}
|
||
if (!length $self->{code})
|
||
{
|
||
# End of code
|
||
return;
|
||
}
|
||
if ($self->{code} =~ /^([a-z_][a-z0-9_]*)/is)
|
||
{
|
||
my $l = $1;
|
||
$self->eat(length $l);
|
||
if (exists $self->{keywords}->{uc $l})
|
||
{
|
||
# Keyword
|
||
return (uc $l, $l);
|
||
}
|
||
# Identifier
|
||
return ('name', $l);
|
||
}
|
||
elsif ($self->{code} =~ /^(
|
||
(\")(?:[^\"\\\\]+|\\\\.)*\" |
|
||
\'(?:[^\'\\\\]+|\\\\.)*\' |
|
||
0\d+ | \d+(\.\d+)? | 0x\d+)/xis)
|
||
{
|
||
# String or numeric non-negative literal
|
||
my $t = $1;
|
||
$self->eat(length $t);
|
||
if ($2)
|
||
{
|
||
$t =~ s/\$/\\\$/gso;
|
||
}
|
||
return ('literal', $t);
|
||
}
|
||
else
|
||
{
|
||
# Special characters
|
||
foreach my $l (@{$self->{lens}})
|
||
{
|
||
my $a = $self->{nchar}->{$l};
|
||
my $t = substr($self->{code}, 0, $l);
|
||
if (exists $a->{$t})
|
||
{
|
||
$self->eat($l);
|
||
if ($self->{in_code})
|
||
{
|
||
$self->{in_code}++ if $t eq $self->{options}->{begin_code};
|
||
$self->{in_code}-- if $t eq $self->{options}->{end_code};
|
||
if (!$self->{in_code})
|
||
{
|
||
if ($self->{options}->{eat_code_line} &&
|
||
$self->{code} =~ /^([ \t\r]+\n\r?)/so)
|
||
{
|
||
$self->eat(length $1);
|
||
}
|
||
return ('-->', $t);
|
||
}
|
||
}
|
||
elsif ($self->{in_subst})
|
||
{
|
||
$self->{in_subst}++ if $t eq $self->{options}->{begin_subst};
|
||
$self->{in_subst}-- if $t eq $self->{options}->{end_subst};
|
||
if (!$self->{in_subst})
|
||
{
|
||
return ('}}', $t);
|
||
}
|
||
}
|
||
return ($t, undef);
|
||
}
|
||
}
|
||
# Unknown character
|
||
$self->warn("Unexpected character '".substr($self->{code}, 0, 1)."'");
|
||
return ('error', undef);
|
||
}
|
||
}
|
||
|
||
sub errorinfo
|
||
{
|
||
my $self = shift;
|
||
my $linestart = rindex($self->{eaten}, "\n");
|
||
my $lineend = index($self->{code}, "\n");
|
||
$lineend = length($self->{code}) if $lineend < 0;
|
||
my $line = substr($self->{eaten}, $linestart+1) . '^^^' . substr($self->{code}, 0, $lineend);
|
||
my $charpos;
|
||
{
|
||
use bytes;
|
||
$charpos = length $self->{eaten};
|
||
}
|
||
return ' in '.$self->{options}->{input_filename}.', line '.($self->{lineno}+1).
|
||
', character '.$charpos.', marked by ^^^ in '.$line;
|
||
}
|
||
|
||
sub warn
|
||
{
|
||
my $self = shift;
|
||
my ($text) = @_;
|
||
$self->{options}->error($text.$self->errorinfo());
|
||
}
|
||
|
||
package VMXTemplate::Utils;
|
||
|
||
use base qw(Exporter);
|
||
our @EXPORT = qw(
|
||
TS_UNIX TS_DB TS_DB_DATE TS_MW TS_EXIF TS_ORACLE TS_ISO_8601 TS_RFC822
|
||
timestamp plural_ru strlimit strip_tags addcslashes
|
||
);
|
||
|
||
use constant {
|
||
TS_UNIX => 0,
|
||
TS_DB => 1,
|
||
TS_DB_DATE => 2,
|
||
TS_MW => 3,
|
||
TS_EXIF => 4,
|
||
TS_ORACLE => 5,
|
||
TS_ISO_8601 => 6,
|
||
TS_RFC822 => 7,
|
||
};
|
||
|
||
my @Mon = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
|
||
my %mon = qw(jan 0 feb 1 mar 2 apr 3 may 4 jun 5 jul 6 aug 7 sep 8 oct 9 nov 10 dec 11);
|
||
my @Wday = qw(Sun Mon Tue Wed Thu Fri Sat);
|
||
|
||
our $safe_tags = 'div|blockquote|span|a|b|i|u|p|h1|h2|h3|h4|h5|h6|strike|strong|small|big|blink|center|ol|pre|sub|sup|font|br|table|tr|td|th|tbody|tfoot|thead|tt|ul|li|em|img|marquee|cite';
|
||
|
||
# ограниченная распознавалка дат
|
||
sub timestamp
|
||
{
|
||
my ($ts, $format) = @_;
|
||
|
||
require POSIX;
|
||
if (int($ts) eq $ts)
|
||
{
|
||
# TS_UNIX or Epoch
|
||
$ts = time if !$ts;
|
||
}
|
||
|
||
elsif ($ts =~ /^\D*(\d{4,}?)\D*(\d{2})\D*(\d{2})\D*(?:(\d{2})\D*(\d{2})\D*(\d{2})\D*([\+\- ]\d{2}\D*)?)?$/so)
|
||
{
|
||
# TS_DB, TS_DB_DATE, TS_MW, TS_EXIF, TS_ISO_8601
|
||
$ts = POSIX::mktime($6||0, $5||0, $4||0, $3, $2-1, $1-1900);
|
||
}
|
||
elsif ($ts =~ /^\s*(\d\d?)-(...)-(\d\d(?:\d\d)?)\s*(\d\d)\.(\d\d)\.(\d\d)/so)
|
||
{
|
||
# TS_ORACLE
|
||
$ts = POSIX::mktime($6, $5, $4, int($1), $mon{lc $2}, $3 < 100 ? $3 : $3-1900);
|
||
}
|
||
elsif ($ts =~ /^\s*..., (\d\d?) (...) (\d{4,}) (\d\d):(\d\d):(\d\d)\s*([\+\- ]\d\d)\s*$/so)
|
||
{
|
||
# TS_RFC822
|
||
$ts = POSIX::mktime($6, $5, $4, int($1), $mon{lc $2}, $3-1900);
|
||
}
|
||
else
|
||
{
|
||
# Bogus value, return undef
|
||
return undef;
|
||
}
|
||
|
||
if (!$format)
|
||
{
|
||
# TS_UNIX
|
||
return $ts;
|
||
}
|
||
elsif ($format == TS_MW)
|
||
{
|
||
return POSIX::strftime("%Y%m%d%H%M%S", localtime($ts));
|
||
}
|
||
elsif ($format == TS_DB)
|
||
{
|
||
return POSIX::strftime("%Y-%m-%d %H:%M:%S", localtime($ts));
|
||
}
|
||
elsif ($format == TS_DB_DATE)
|
||
{
|
||
return POSIX::strftime("%Y-%m-%d", localtime($ts));
|
||
}
|
||
elsif ($format == TS_ISO_8601)
|
||
{
|
||
return POSIX::strftime("%Y-%m-%dT%H:%M:%SZ", localtime($ts));
|
||
}
|
||
elsif ($format == TS_EXIF)
|
||
{
|
||
return POSIX::strftime("%Y:%m:%d %H:%M:%S", localtime($ts));
|
||
}
|
||
elsif ($format == TS_RFC822)
|
||
{
|
||
my @l = localtime($ts);
|
||
return POSIX::strftime($Wday[$l[6]].", %d ".$Mon[$l[4]]." %Y %H:%M:%S %z", @l);
|
||
}
|
||
elsif ($format == TS_ORACLE)
|
||
{
|
||
my @l = localtime($ts);
|
||
return POSIX::strftime("%d-".$Mon[$l[4]]."-%Y %H.%M.%S %p", @l);
|
||
}
|
||
return $ts;
|
||
}
|
||
|
||
# Select one of 3 plural forms for russian language
|
||
sub plural_ru
|
||
{
|
||
my ($count, $one, $few, $many) = @_;
|
||
my $sto = $count % 100;
|
||
if ($sto >= 10 && $sto <= 20)
|
||
{
|
||
return $many;
|
||
}
|
||
my $r = $count % 10;
|
||
if ($r == 1)
|
||
{
|
||
return $one;
|
||
}
|
||
elsif ($r >= 2 && $r <= 4)
|
||
{
|
||
return $few;
|
||
}
|
||
return $many;
|
||
}
|
||
|
||
# Limit string to $maxlen
|
||
sub strlimit
|
||
{
|
||
my ($str, $maxlen, $dots) = @_;
|
||
if (!$maxlen || $maxlen < 1 || length($str) <= $maxlen)
|
||
{
|
||
return $str;
|
||
}
|
||
$str = substr($str, 0, $maxlen);
|
||
my $p = rindex($str, ' ');
|
||
if ($p < 0 || (my $pt = rindex($str, "\t")) > $p)
|
||
{
|
||
$p = $pt;
|
||
}
|
||
if ($p > 0)
|
||
{
|
||
$str = substr($str, 0, $p);
|
||
}
|
||
return $str . (defined $dots ? $dots : '...');
|
||
}
|
||
|
||
# Replace (some) tags with whitespace
|
||
sub strip_tags
|
||
{
|
||
my ($str, $allowed) = @_;
|
||
my $allowed = $allowed ? '(?!/?('.$allowed.'))' : '';
|
||
$str =~ s/(<$allowed\/?[a-z][a-z0-9-]*(\s+[^<>]*)?>\s*)+/ /gis;
|
||
return $str;
|
||
}
|
||
|
||
# Add '\' before specified chars
|
||
sub addcslashes
|
||
{
|
||
my ($str, $escape) = @_;
|
||
$str =~ s/([$escape])/\\$1/gs;
|
||
return $str;
|
||
}
|