128 lines
3.5 KiB
Ruby
128 lines
3.5 KiB
Ruby
require "active_support/core_ext/enumerable"
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module ActionView
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# = Action View Errors
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class ActionViewError < StandardError #:nodoc:
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end
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class EncodingError < StandardError #:nodoc:
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end
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class WrongEncodingError < EncodingError #:nodoc:
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def initialize(string, encoding)
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@string, @encoding = string, encoding
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end
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def message
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@string.force_encoding("BINARY")
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"Your template was not saved as valid #{@encoding}. Please " \
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"either specify #{@encoding} as the encoding for your template " \
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"in your text editor, or mark the template with its " \
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"encoding by inserting the following as the first line " \
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"of the template:\n\n# encoding: <name of correct encoding>.\n\n" \
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"The source of your template was:\n\n#{@string}"
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end
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end
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class MissingTemplate < ActionViewError #:nodoc:
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attr_reader :path
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def initialize(paths, path, prefixes, partial, details, *)
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@path = path
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prefixes = Array(prefixes)
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template_type = if partial
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"partial"
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elsif path =~ /layouts/i
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'layout'
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else
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'template'
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end
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searched_paths = prefixes.map { |prefix| [prefix, path].join("/") }
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out = "Missing #{template_type} #{searched_paths.join(", ")} with #{details.inspect}. Searched in:\n"
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out += paths.compact.map { |p| " * #{p.to_s.inspect}\n" }.join
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super out
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end
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end
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class Template
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# The Template::Error exception is raised when the compilation or rendering of the template
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# fails. This exception then gathers a bunch of intimate details and uses it to report a
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# precise exception message.
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class Error < ActionViewError #:nodoc:
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SOURCE_CODE_RADIUS = 3
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attr_reader :original_exception, :backtrace
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def initialize(template, original_exception)
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super(original_exception.message)
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@template, @original_exception = template, original_exception
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@sub_templates = nil
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@backtrace = original_exception.backtrace
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end
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def file_name
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@template.identifier
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end
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def sub_template_message
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if @sub_templates
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"Trace of template inclusion: " +
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@sub_templates.collect { |template| template.inspect }.join(", ")
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else
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""
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end
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end
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def source_extract(indentation = 0)
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return unless num = line_number
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num = num.to_i
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source_code = @template.source.split("\n")
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start_on_line = [ num - SOURCE_CODE_RADIUS - 1, 0 ].max
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end_on_line = [ num + SOURCE_CODE_RADIUS - 1, source_code.length].min
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indent = ' ' * indentation
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line_counter = start_on_line
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return unless source_code = source_code[start_on_line..end_on_line]
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source_code.sum do |line|
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line_counter += 1
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"#{indent}#{line_counter}: #{line}\n"
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end
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end
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def sub_template_of(template_path)
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@sub_templates ||= []
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@sub_templates << template_path
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end
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def line_number
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@line_number ||=
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if file_name
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regexp = /#{Regexp.escape File.basename(file_name)}:(\d+)/
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$1 if message =~ regexp || backtrace.find { |line| line =~ regexp }
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end
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end
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def annoted_source_code
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source_extract(4)
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end
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private
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def source_location
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if line_number
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"on line ##{line_number} of "
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else
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'in '
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end + file_name
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end
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end
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end
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TemplateError = Template::Error
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end
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