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Diffstat (limited to 'doc/csv/options/parsing/skip_lines.rdoc')
-rw-r--r-- | doc/csv/options/parsing/skip_lines.rdoc | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/doc/csv/options/parsing/skip_lines.rdoc b/doc/csv/options/parsing/skip_lines.rdoc new file mode 100644 index 0000000000..1481c40a5f --- /dev/null +++ b/doc/csv/options/parsing/skip_lines.rdoc @@ -0,0 +1,37 @@ +====== Option +skip_lines+ + +Specifies an object to use in identifying comment lines in the input that are to be ignored: +* If a \Regexp, ignores lines that match it. +* If a \String, converts it to a \Regexp, ignores lines that match it. +* If +nil+, no lines are considered to be comments. + +Default value: + CSV::DEFAULT_OPTIONS.fetch(:skip_lines) # => nil + +For examples in this section: + str = <<-EOT + # Comment + foo,0 + bar,1 + baz,2 + # Another comment + EOT + str # => "# Comment\nfoo,0\nbar,1\nbaz,2\n# Another comment\n" + +Using the default, +nil+: + ary = CSV.parse(str) + ary # => [["# Comment"], ["foo", "0"], ["bar", "1"], ["baz", "2"], ["# Another comment"]] + +Using a \Regexp: + ary = CSV.parse(str, skip_lines: /^#/) + ary # => [["foo", "0"], ["bar", "1"], ["baz", "2"]] + +Using a \String: + ary = CSV.parse(str, skip_lines: '#') + ary # => [["foo", "0"], ["bar", "1"], ["baz", "2"]] + +--- + +Raises an exception if given an object that is not a \Regexp, a \String, or +nil+: + # Raises ArgumentError (:skip_lines has to respond to #match: 0) + CSV.parse(str, skip_lines: 0) |