add some xslate macros, to make things a bit cleaner

2 files changed, 67 insertions, 1 deletions

diff --git a/lib/Spreadsheet/Template/Helpers/Xslate.pm b/lib/Spreadsheet/Template/Helpers/Xslate.pm
new file mode 100644
index 0000000..9776a3b
--- /dev/null
+++ b/lib/Spreadsheet/Template/Helpers/Xslate.pm
@@ -0,0 +1,65 @@
+package Spreadsheet::Template::Helpers::Xslate;
+use strict;
+use warnings;
+
+use JSON;
+
+my $JSON = JSON->new;
+
+use Sub::Exporter 'build_exporter';
+
+my $import = build_exporter({
+    exports => [
+        map { $_ => \&_curry_package } qw(format c true false)
+    ],
+    groups => {
+        default => [qw(format c true false)],
+    },
+});
+
+my %formats;
+
+sub import {
+    my $caller = caller;
+    $formats{$caller} = {};
+    goto $import;
+}
+
+sub format {
+    my ($package, $name, $format) = @_;
+    $formats{$package}{$name} = $format;
+    return '';
+}
+
+sub c {
+    my ($package, $contents, $format, $type, %args) = @_;
+
+    $type = 'string' unless defined $type;
+
+    return $JSON->encode({
+        contents => "$contents",
+        format   => _formats($package, $format),
+        type     => $type,
+        (defined $args{formula}
+            ? (formula => $args{formula})
+            : ()),
+    });
+}
+
+sub true  { JSON::true  }
+sub false { JSON::false }
+
+sub _formats {
+    my ($package, $format) = @_;
+
+    return $format if ref($format);
+
+    return $formats{$package}{$format};
+}
+
+sub _curry_package {
+    my ($package, $name) = @_;
+    return sub { $package->$name(@_) };
+}
+
+1;
diff --git a/lib/Spreadsheet/Template/Processor/Xslate.pm b/lib/Spreadsheet/Template/Processor/Xslate.pm
index 1ae2454..9c62bb3 100644
--- a/lib/Spreadsheet/Template/Processor/Xslate.pm
+++ b/lib/Spreadsheet/Template/Processor/Xslate.pm
@@ -19,7 +19,8 @@ has xslate => (
         my $self = shift;
         return Text::Xslate->new(
             type   => 'text',
-            syntax => $self->syntax
+            syntax => $self->syntax,
+            module => ['Spreadsheet::Template::Helpers::Xslate'],
         );
     },
 );