class WavefrontDisplayPrinter::Terse
Print values which are per-row. The terse listings, primarily
Attributes
data[R]
Public Class Methods
new(data, keys)
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@param data [Hash] data to display, from a response object @param keys [Array] keys to display, in order
# File lib/wavefront-cli/display/printer/terse.rb, line 16 def initialize(data, keys) @data = stringify(data, keys) @fmt = format_string(data, keys) end
Public Instance Methods
format_string(data, keys)
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@return [String] used to format output
# File lib/wavefront-cli/display/printer/terse.rb, line 23 def format_string(data, keys) keys.map { |k| "%-#{data.longest_value_of(k)}<#{k}>s" }.join(' ') end
map_to_string(value)
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If we get a hash as a value (tags, for instance) we squash it down to a “key1=val1;key2=val2” kind of string. Note that this doesn't handle nested hashes. It shouldn't have to.
@param value [Map,Hash] { k1: 'v1', k2: 'v2' } @return [String] 'k1=v1;k2=v2'
# File lib/wavefront-cli/display/printer/terse.rb, line 55 def map_to_string(value) value.map { |k, v| "#{k}=#{v}" }.join(';') end
stringify(data, keys)
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Flatten nested data. @param data [Map,Hash] data to flatten @param keys [Array] keys of interest. We don't bother working on
things we'll only throw away
# File lib/wavefront-cli/display/printer/terse.rb, line 32 def stringify(data, keys) data.map { |e| e.tap { keys.each { |k| e[k] = value_as_string(e[k]) } } } end
to_s()
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Format every element according to the format string @fmt
# File lib/wavefront-cli/display/printer/terse.rb, line 61 def to_s data.map { |e| format(@fmt, e).rstrip }.join("\n") rescue KeyError raise WavefrontCli::Exception::UserError, 'field not found' end
value_as_string(value)
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Turn a (potentially) more complicated structure into a string @param value [Object] @return [String]
# File lib/wavefront-cli/display/printer/terse.rb, line 40 def value_as_string(value) return value.join(', ') if value.is_a?(Array) return map_to_string(value) if value.is_a?(Map) value end