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Added support for transparent template caching.

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Chris 2012-09-04 14:43:54 +01:00
parent 6bb244472f
commit e0792ca8b4
1 changed files with 15 additions and 0 deletions
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15
Template.pm
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@ -183,6 +183,10 @@ BEGIN {
# to mark the location of an ordinal specifier. %o is ignored if it # to mark the location of an ordinal specifier. %o is ignored if it
# does not immediately follow a digit field. Defaults to "%a, %d %b %Y %H:%M:%S" # does not immediately follow a digit field. Defaults to "%a, %d %b %Y %H:%M:%S"
# - `blockname` If set, allow blocks to be specified by name rather than id. # - `blockname` If set, allow blocks to be specified by name rather than id.
# - `usecache` If true, template files are cached as they are loaded. This will increase memory use, but
# can make template operations faster in situations where the same template needs to be used
# repeatedly, but explicity preloading can't be performed. Template files are reloaded if the
# file mtime has changed since the last load to avoid stale cache entries. This defaults to true.
sub new { sub new {
my $invocant = shift; my $invocant = shift;
my $class = ref($invocant) || $invocant; my $class = ref($invocant) || $invocant;
@ -199,6 +203,7 @@ sub new {
"entities" => $entities, "entities" => $entities,
"utfentities" => $utfentities, "utfentities" => $utfentities,
"blockname" => 0, "blockname" => 0,
"usecache" => 1,
@_, @_,
}; };
@ -482,6 +487,12 @@ sub load_template {
next; next;
} }
my $filemtime = (stat($filename))[9];
# If caching is enabled, and the times match, the file has been loaded before
return $self -> process_template($self -> {"cache"} -> {$name} -> {"template"}, $varmap, $nocharfix)
if($self -> {"usecache"} && $self -> {"cache"} -> {$name} -> {"mtime"} == $filemtime);
# Try the load and process the template... # Try the load and process the template...
if(open(TEMPLATE, "<:utf8", $filename)) { if(open(TEMPLATE, "<:utf8", $filename)) {
undef $/; undef $/;
@ -489,6 +500,10 @@ sub load_template {
$/ = "\n"; $/ = "\n";
close(TEMPLATE); close(TEMPLATE);
# Cache the template if needed.
$self -> {"cache"} -> {$name} = { "template" => $lines, "mtime" => $filemtime }
if($self -> {"usecache"});
# Do variable substitution # Do variable substitution
$self -> process_template(\$lines, $varmap, $nocharfix); $self -> process_template(\$lines, $varmap, $nocharfix);