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module SitemapGenerator
# A class for generating sitemap names given the base for the filename.
#
# === Example
# namer = SitemapNamer.new(:sitemap)
# namer.to_s => 'sitemap1.xml.gz'
# namer.next.to_s => 'sitemap2.xml.gz'
class SitemapNamer
NameError = Class.new(StandardError)
# Params:
# base - string or symbol that forms the base of the generated filename
#
# Options include:
# :extension - Default: '.xml.gz'. File extension to append.
# :start - Default: 1. Index at which to start counting.
def initialize(base, options={});
@options = options.reverse_merge(
:extension => '.xml.gz',
:start => 1
)
@base = base
reset
end
def to_s
"#{@base}#{@count}#{@options[:extension]}"
end
# Increment count and return self
def next
@count += 1
self
end
# Decrement count and return self
def previous
raise NameError, "Already at the start of the series" if start?
@count -= 1
self
end
# Reset count to the starting index
def reset
@count = @options[:start]
end
def start?
@count <= @options[:start]
end
end
# A Namer for Sitemap Indexes. The name never changes.
class SitemapIndexNamer < SitemapNamer
def to_s
"#{@base}#{@options[:extension]}"
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems