ReadmeStaticUrl returns the static path for the README.md file.

AvailableIcons returns the list of supported icons and existing in the FS.

ChartDataExists checks if the chart cache directory is present.

DataDirBase is the directory used to store cached data like readme files Variable so it can be mocked.

DownloadAndExtractChartTarball the chart tar file linked by metadata.Urls and store the wanted files (i.e README.md) under chartDataDir.

DownloadAndProcessChartIcon the chart icon and process it.

ReadFromCache reads a file from the local cache based on the chart and filename provided.

TarballPath returns the location of the chart package in the local cache.

IconOutput defines the output used by the consumer.