Sha256: f65af8af160e3c2248bcb2e201c1d985d3968254a440bb56a36dd6375ad8e2c5
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Size: 1.33 KB
Versions: 31
Compression:
Stored size: 1.33 KB
Contents
module Lono::Yamler
class Validator
def initialize(path)
@path = path
end
def validate!
validate_yaml(@path)
end
def validate_yaml(path)
text = IO.read(path)
begin
YAML.load(text)
rescue Psych::SyntaxError => e
handle_yaml_syntax_error(e, path)
end
end
def handle_yaml_syntax_error(e, path)
io = StringIO.new
io.puts "Invalid yaml. Output written for debugging: #{path}".color(:red)
io.puts "ERROR: #{e.message}".color(:red)
# Grab line info. Example error:
# ERROR: (<unknown>): could not find expected ':' while scanning a simple key at line 2 column 1
md = e.message.match(/at line (\d+) column (\d+)/)
line = md[1].to_i
lines = IO.read(path).split("\n")
context = 5 # lines of context
top, bottom = [line-context-1, 0].max, line+context-1
spacing = lines.size.to_s.size
lines[top..bottom].each_with_index do |line_content, index|
line_number = top+index+1
if line_number == line
io.printf("%#{spacing}d %s\n".color(:red), line_number, line_content)
else
io.printf("%#{spacing}d %s\n", line_number, line_content)
end
end
if ENV['LONO_TEST']
io.string
else
puts io.string
exit 1
end
end
end
end
Version data entries
31 entries across 31 versions & 1 rubygems