pax_global_header 0000666 0000000 0000000 00000000064 13213434112 0014504 g ustar 00root root 0000000 0000000 52 comment=1963b428c08d74d3f60e4fe5fa50f4253506b47b
scanf-1.0.0/ 0000775 0000000 0000000 00000000000 13213434112 0012574 5 ustar 00root root 0000000 0000000 scanf-1.0.0/.gitignore 0000664 0000000 0000000 00000000127 13213434112 0014564 0 ustar 00root root 0000000 0000000 /.bundle/
/.yardoc
/Gemfile.lock
/_yardoc/
/coverage/
/doc/
/pkg/
/spec/reports/
/tmp/
scanf-1.0.0/.travis.yml 0000664 0000000 0000000 00000000146 13213434112 0014706 0 ustar 00root root 0000000 0000000 sudo: false
language: ruby
rvm:
- 2.3.5
- 2.4.2
- ruby-head
before_install: gem install bundler
scanf-1.0.0/Gemfile 0000664 0000000 0000000 00000000132 13213434112 0014063 0 ustar 00root root 0000000 0000000 source 'https://rubygems.org'
# Specify your gem's dependencies in scanf.gemspec
gemspec
scanf-1.0.0/LICENSE.txt 0000664 0000000 0000000 00000002402 13213434112 0014415 0 ustar 00root root 0000000 0000000 Copyright (C) 1993-2013 Yukihiro Matsumoto. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
scanf-1.0.0/README.md 0000664 0000000 0000000 00000005454 13213434112 0014063 0 ustar 00root root 0000000 0000000 # scanf
[](https://travis-ci.org/ruby/scanf)
scanf is an implementation of the C function scanf(3), modified as necessary for Ruby compatibility.
the methods provided are String#scanf, IO#scanf, and Kernel#scanf. Kernel#scanf is a wrapper around TDIN.scanf. IO#scanf can be used on any IO stream, including file handles and sockets. scanf can be called either with or without a block.
Scanf scans an input string or stream according to a format, as described below in Conversions, and returns an array of matches between the format and the input. The format is defined in a string, and is similar (though not identical) to the formats used in Kernel#printf and Kernel#sprintf.
The format may contain conversion specifiers, which tell scanf what form (type) each particular matched substring should be converted to (e.g., decimal integer, floating point number, literal string,
etc.) The matches and conversions take place from left to right, and the conversions themselves are returned as an array.
The format string may also contain characters other than those in the conversion specifiers. White space (blanks, tabs, or newlines) in the format string matches any amount of white space, including none, in the input. Everything else matches only itself.
Scanning stops, and scanf returns, when any input character fails to match the specifications in the format string, or when input is exhausted, or when everything in the format string has been
matched. All matches found up to the stopping point are returned in the return array (or yielded to the block, if a block was given).
## Installation
Add this line to your application's Gemfile:
```ruby
gem 'scanf'
```
And then execute:
$ bundle
Or install it yourself as:
$ gem install scanf
## Usage
```
require 'scanf'
# String#scanf and IO#scanf take a single argument, the format string
array = a_string.scanf("%d%s")
array = an_io.scanf("%d%s")
# Kernel#scanf reads from STDIN
array = scanf("%d%s")
```
## Development
After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake test` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
## Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/ruby/scanf.
## License
The gem is available as open source under the terms of the [2-Clause BSD License](https://opensource.org/licenses/BSD-2-Clause).
scanf-1.0.0/Rakefile 0000664 0000000 0000000 00000000306 13213434112 0014240 0 ustar 00root root 0000000 0000000 require "bundler/gem_tasks"
require "rake/testtask"
Rake::TestTask.new(:test) do |t|
t.libs << "test"
t.libs << "lib"
t.test_files = FileList['test/**/test_*.rb']
end
task :default => :test
scanf-1.0.0/bin/ 0000775 0000000 0000000 00000000000 13213434112 0013344 5 ustar 00root root 0000000 0000000 scanf-1.0.0/bin/console 0000775 0000000 0000000 00000000524 13213434112 0014735 0 ustar 00root root 0000000 0000000 #!/usr/bin/env ruby
require "bundler/setup"
require "scanf"
# You can add fixtures and/or initialization code here to make experimenting
# with your gem easier. You can also use a different console, if you like.
# (If you use this, don't forget to add pry to your Gemfile!)
# require "pry"
# Pry.start
require "irb"
IRB.start(__FILE__)
scanf-1.0.0/bin/setup 0000775 0000000 0000000 00000000203 13213434112 0014425 0 ustar 00root root 0000000 0000000 #!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'
set -vx
bundle install
# Do any other automated setup that you need to do here
scanf-1.0.0/lib/ 0000775 0000000 0000000 00000000000 13213434112 0013342 5 ustar 00root root 0000000 0000000 scanf-1.0.0/lib/scanf.rb 0000664 0000000 0000000 00000057000 13213434112 0014763 0 ustar 00root root 0000000 0000000 # frozen_string_literal: false
# scanf for Ruby
#
#--
# $Release Version: 1.1.2 $
# $Revision$
# $Id$
# $Author$
#++
#
# == Description
#
# scanf is an implementation of the C function scanf(3), modified as necessary
# for Ruby compatibility.
#
# the methods provided are String#scanf, IO#scanf, and
# Kernel#scanf. Kernel#scanf is a wrapper around STDIN.scanf. IO#scanf
# can be used on any IO stream, including file handles and sockets.
# scanf can be called either with or without a block.
#
# Scanf scans an input string or stream according to a format, as
# described below in Conversions, and returns an array of matches between
# the format and the input. The format is defined in a string, and is
# similar (though not identical) to the formats used in Kernel#printf and
# Kernel#sprintf.
#
# The format may contain conversion specifiers, which tell scanf
# what form (type) each particular matched substring should be converted
# to (e.g., decimal integer, floating point number, literal string,
# etc.) The matches and conversions take place from left to right, and
# the conversions themselves are returned as an array.
#
# The format string may also contain characters other than those in the
# conversion specifiers. White space (blanks, tabs, or newlines) in the
# format string matches any amount of white space, including none, in
# the input. Everything else matches only itself.
#
# Scanning stops, and scanf returns, when any input character fails to
# match the specifications in the format string, or when input is
# exhausted, or when everything in the format string has been
# matched. All matches found up to the stopping point are returned in
# the return array (or yielded to the block, if a block was given).
#
#
# == Basic usage
#
# require 'scanf'
#
# # String#scanf and IO#scanf take a single argument, the format string
# array = a_string.scanf("%d%s")
# array = an_io.scanf("%d%s")
#
# # Kernel#scanf reads from STDIN
# array = scanf("%d%s")
#
# == Block usage
#
# When called with a block, scanf keeps scanning the input, cycling back
# to the beginning of the format string, and yields a new array of
# conversions to the block every time the format string is matched
# (including partial matches, but not including complete failures). The
# actual return value of scanf when called with a block is an array
# containing the results of all the executions of the block.
#
# str = "123 abc 456 def 789 ghi"
# str.scanf("%d%s") { |num,str| [ num * 2, str.upcase ] }
# # => [[246, "ABC"], [912, "DEF"], [1578, "GHI"]]
#
# == Conversions
#
# The single argument to scanf is a format string, which generally
# includes one or more conversion specifiers. Conversion specifiers
# begin with the percent character ('%') and include information about
# what scanf should next scan for (string, decimal number, single
# character, etc.).
#
# There may be an optional maximum field width, expressed as a decimal
# integer, between the % and the conversion. If no width is given, a
# default of `infinity' is used (with the exception of the %c specifier;
# see below). Otherwise, given a field width of n for a given
# conversion, at most n characters are scanned in processing
# that conversion. Before conversion begins, most conversions skip
# white space in the input string; this white space is not counted
# against the field width.
#
# The following conversions are available.
#
# [%]
# Matches a literal `%'. That is, `%%' in the format string matches a
# single input `%' character. No conversion is done, and the resulting
# '%' is not included in the return array.
#
# [d]
# Matches an optionally signed decimal integer.
#
# [u]
# Same as d.
#
# [i]
# Matches an optionally signed integer. The integer is read in base
# 16 if it begins with `0x' or `0X', in base 8 if it begins with `0',
# and in base 10 other- wise. Only characters that correspond to the
# base are recognized.
#
# [o]
# Matches an optionally signed octal integer.
#
# [x, X]
# Matches an optionally signed hexadecimal integer,
#
# [a, e, f, g, A, E, F, G]
# Matches an optionally signed floating-point number.
#
# [s]
# Matches a sequence of non-white-space character. The input string stops at
# white space or at the maximum field width, whichever occurs first.
#
# [c]
# Matches a single character, or a sequence of n characters if a
# field width of n is specified. The usual skip of leading white
# space is suppressed. To skip white space first, use an explicit space in
# the format.
#
# [[]
# Matches a nonempty sequence of characters from the specified set
# of accepted characters. The usual skip of leading white space is
# suppressed. This bracketed sub-expression is interpreted exactly like a
# character class in a Ruby regular expression. (In fact, it is placed as-is
# in a regular expression.) The matching against the input string ends with
# the appearance of a character not in (or, with a circumflex, in) the set,
# or when the field width runs out, whichever comes first.
#
# === Assignment suppression
#
# To require that a particular match occur, but without including the result
# in the return array, place the assignment suppression flag, which is
# the star character ('*'), immediately after the leading '%' of a format
# specifier (just before the field width, if any).
#
# == scanf for Ruby compared with scanf in C
#
# scanf for Ruby is based on the C function scanf(3), but with modifications,
# dictated mainly by the underlying differences between the languages.
#
# === Unimplemented flags and specifiers
#
# * The only flag implemented in scanf for Ruby is '*' (ignore
# upcoming conversion). Many of the flags available in C versions of
# scanf(3) have to do with the type of upcoming pointer arguments, and are
# meaningless in Ruby.
#
# * The n specifier (store number of characters consumed so far in
# next pointer) is not implemented.
#
# * The p specifier (match a pointer value) is not implemented.
#
# === Altered specifiers
#
# [o, u, x, X]
# In scanf for Ruby, all of these specifiers scan for an optionally signed
# integer, rather than for an unsigned integer like their C counterparts.
#
# === Return values
#
# scanf for Ruby returns an array of successful conversions, whereas
# scanf(3) returns the number of conversions successfully
# completed. (See below for more details on scanf for Ruby's return
# values.)
#
# == Return values
#
# Without a block, scanf returns an array containing all the conversions
# it has found. If none are found, scanf will return an empty array. An
# unsuccessful match is never ignored, but rather always signals the end
# of the scanning operation. If the first unsuccessful match takes place
# after one or more successful matches have already taken place, the
# returned array will contain the results of those successful matches.
#
# With a block scanf returns a 'map'-like array of transformations from
# the block -- that is, an array reflecting what the block did with each
# yielded result from the iterative scanf operation. (See "Block
# usage", above.)
#
# == Current limitations and bugs
#
# When using IO#scanf under Windows, make sure you open your files in
# binary mode:
#
# File.open("filename", "rb")
#
# so that scanf can keep track of characters correctly.
#
# Support for character classes is reasonably complete (since it
# essentially piggy-backs on Ruby's regular expression handling of
# character classes), but users are advised that character class testing
# has not been exhaustive, and that they should exercise some caution
# in using any of the more complex and/or arcane character class
# idioms.
#
# == License and copyright
#
# Copyright:: (c) 2002-2003 David Alan Black
# License:: Distributed on the same licensing terms as Ruby itself
#
# == Warranty disclaimer
#
# This software is provided "as is" and without any express or implied
# warranties, including, without limitation, the implied warranties of
# merchantability and fitness for a particular purpose.
#
# == Credits and acknowledgements
#
# scanf was developed as the major activity of the Austin Ruby Codefest
# (Austin, Texas, August 2002).
#
# Principal author:: David Alan Black (mailto:dblack@superlink.net)
# Co-author:: Hal Fulton (mailto:hal9000@hypermetrics.com)
# Project contributors:: Nolan Darilek, Jason Johnston
#
# Thanks to Hal Fulton for hosting the Codefest.
#
# Thanks to Matz for suggestions about the class design.
#
# Thanks to Gavin Sinclair for some feedback on the documentation.
#
# The text for parts of this document, especially the Description and
# Conversions sections, above, were adapted from the Linux Programmer's
# Manual manpage for scanf(3), dated 1995-11-01.
#
# == Bugs and bug reports
#
# scanf for Ruby is based on something of an amalgam of C scanf
# implementations and documentation, rather than on a single canonical
# description. Suggestions for features and behaviors which appear in
# other scanfs, and would be meaningful in Ruby, are welcome, as are
# reports of suspicious behaviors and/or bugs. (Please see "Credits and
# acknowledgements", above, for email addresses.)
module Scanf
# :stopdoc:
# ==Technical notes
#
# ===Rationale behind scanf for Ruby
#
# The impetus for a scanf implementation in Ruby comes chiefly from the fact
# that existing pattern matching operations, such as Regexp#match and
# String#scan, return all results as strings, which have to be converted to
# integers or floats explicitly in cases where what's ultimately wanted are
# integer or float values.
#
# ===Design of scanf for Ruby
#
# scanf for Ruby is essentially a -to- converter.
#
# When scanf is called, a FormatString object is generated from the
# format string ("%d%s...") argument. The FormatString object breaks the
# format string down into atoms ("%d", "%5f", "blah", etc.), and from
# each atom it creates a FormatSpecifier object, which it
# saves.
#
# Each FormatSpecifier has a regular expression fragment and a "handler"
# associated with it. For example, the regular expression fragment
# associated with the format "%d" is "([-+]?\d+)", and the handler
# associated with it is a wrapper around String#to_i. scanf itself calls
# FormatString#match, passing in the input string. FormatString#match
# iterates through its FormatSpecifiers; for each one, it matches the
# corresponding regular expression fragment against the string. If
# there's a match, it sends the matched string to the handler associated
# with the FormatSpecifier.
#
# Thus, to follow up the "%d" example: if "123" occurs in the input
# string when a FormatSpecifier consisting of "%d" is reached, the "123"
# will be matched against "([-+]?\d+)", and the matched string will be
# rendered into an integer by a call to to_i.
#
# The rendered match is then saved to an accumulator array, and the
# input string is reduced to the post-match substring. Thus the string
# is "eaten" from the left as the FormatSpecifiers are applied in
# sequence. (This is done to a duplicate string; the original string is
# not altered.)
#
# As soon as a regular expression fragment fails to match the string, or
# when the FormatString object runs out of FormatSpecifiers, scanning
# stops and results accumulated so far are returned in an array.
class FormatSpecifier
attr_reader :re_string, :matched_string, :conversion, :matched
private
def skip; /^\s*%\*/.match(@spec_string); end
def extract_float(s)
return nil unless s &&! skip
if /\A(?[-+]?)0[xX](?\.\h+|\h+(?:\.\h*)?)[pP](?[-+]?\d+)/ =~ s
f1, f2 = frac.split('.')
f = f1.hex
if f2
len = f2.length
if len > 0
f += f2.hex / (16.0 ** len)
end
end
(sign == ?- ? -1 : 1) * Math.ldexp(f, exp.to_i)
elsif /\A([-+]?\d+)\.([eE][-+]\d+)/ =~ s
($1 << $2).to_f
else
s.to_f
end
end
def extract_decimal(s); s.to_i if s &&! skip; end
def extract_hex(s); s.hex if s &&! skip; end
def extract_octal(s); s.oct if s &&! skip; end
def extract_integer(s); Integer(s) if s &&! skip; end
def extract_plain(s); s unless skip; end
def nil_proc(s); nil; end
public
def to_s
@spec_string
end
def count_space?
/(?:\A|\S)%\*?\d*c|%\d*\[/.match(@spec_string)
end
def initialize(str)
@spec_string = str
h = '[A-Fa-f0-9]'
@re_string, @handler =
case @spec_string
# %[[:...:]]
when /%\*?(\[\[:[a-z]+:\]\])/
[ "(#{$1}+)", :extract_plain ]
# %5[[:...:]]
when /%\*?(\d+)(\[\[:[a-z]+:\]\])/
[ "(#{$2}{1,#{$1}})", :extract_plain ]
# %[...]
when /%\*?\[([^\]]*)\]/
yes = $1
if /^\^/.match(yes) then no = yes[1..-1] else no = '^' + yes end
[ "([#{yes}]+)(?=[#{no}]|\\z)", :extract_plain ]
# %5[...]
when /%\*?(\d+)\[([^\]]*)\]/
yes = $2
w = $1
[ "([#{yes}]{1,#{w}})", :extract_plain ]
# %i
when /%\*?i/
[ "([-+]?(?:(?:0[0-7]+)|(?:0[Xx]#{h}+)|(?:[1-9]\\d*)))", :extract_integer ]
# %5i
when /%\*?(\d+)i/
n = $1.to_i
s = "("
if n > 1 then s += "[1-9]\\d{1,#{n-1}}|" end
if n > 1 then s += "0[0-7]{1,#{n-1}}|" end
if n > 2 then s += "[-+]0[0-7]{1,#{n-2}}|" end
if n > 2 then s += "[-+][1-9]\\d{1,#{n-2}}|" end
if n > 2 then s += "0[Xx]#{h}{1,#{n-2}}|" end
if n > 3 then s += "[-+]0[Xx]#{h}{1,#{n-3}}|" end
s += "\\d"
s += ")"
[ s, :extract_integer ]
# %d, %u
when /%\*?[du]/
[ '([-+]?\d+)', :extract_decimal ]
# %5d, %5u
when /%\*?(\d+)[du]/
n = $1.to_i
s = "("
if n > 1 then s += "[-+]\\d{1,#{n-1}}|" end
s += "\\d{1,#{$1}})"
[ s, :extract_decimal ]
# %x
when /%\*?[Xx]/
[ "([-+]?(?:0[Xx])?#{h}+)", :extract_hex ]
# %5x
when /%\*?(\d+)[Xx]/
n = $1.to_i
s = "("
if n > 3 then s += "[-+]0[Xx]#{h}{1,#{n-3}}|" end
if n > 2 then s += "0[Xx]#{h}{1,#{n-2}}|" end
if n > 1 then s += "[-+]#{h}{1,#{n-1}}|" end
s += "#{h}{1,#{n}}"
s += ")"
[ s, :extract_hex ]
# %o
when /%\*?o/
[ '([-+]?[0-7]+)', :extract_octal ]
# %5o
when /%\*?(\d+)o/
[ "([-+][0-7]{1,#{$1.to_i-1}}|[0-7]{1,#{$1}})", :extract_octal ]
# %f
when /%\*?[aefgAEFG]/
[ '([-+]?(?:0[xX](?:\.\h+|\h+(?:\.\h*)?)[pP][-+]?\d+|\d+(?![\d.])|\d*\.\d*(?:[eE][-+]?\d+)?))', :extract_float ]
# %5f
when /%\*?(\d+)[aefgAEFG]/
[ '(?=[-+]?(?:0[xX](?:\.\h+|\h+(?:\.\h*)?)[pP][-+]?\d+|\d+(?![\d.])|\d*\.\d*(?:[eE][-+]?\d+)?))' +
"(\\S{1,#{$1}})", :extract_float ]
# %5s
when /%\*?(\d+)s/
[ "(\\S{1,#{$1}})", :extract_plain ]
# %s
when /%\*?s/
[ '(\S+)', :extract_plain ]
# %c
when /\s%\*?c/
[ "\\s*(.)", :extract_plain ]
# %c
when /%\*?c/
[ "(.)", :extract_plain ]
# %5c (whitespace issues are handled by the count_*_space? methods)
when /%\*?(\d+)c/
[ "(.{1,#{$1}})", :extract_plain ]
# %%
when /%%/
[ '(\s*%)', :nil_proc ]
# literal characters
else
[ "(#{Regexp.escape(@spec_string)})", :nil_proc ]
end
@re_string = '\A' + @re_string
end
def to_re
Regexp.new(@re_string,Regexp::MULTILINE)
end
def match(str)
@matched = false
s = str.dup
s.sub!(/\A\s+/,'') unless count_space?
res = to_re.match(s)
if res
@conversion = send(@handler, res[1])
@matched_string = @conversion.to_s
@matched = true
end
res
end
def letter
@spec_string[/%\*?\d*([a-z\[])/, 1]
end
def width
@spec_string[/%\*?(\d+)/, 1]&.to_i
end
def mid_match?
return false unless @matched
cc_no_width = letter == '[' &&! width
c_or_cc_width = (letter == 'c' || letter == '[') && width
width_left = c_or_cc_width && (matched_string.size < width)
return width_left || cc_no_width
end
end
class FormatString
attr_reader :string_left, :last_spec_tried,
:last_match_tried, :matched_count, :space
SPECIFIERS = 'diuXxofFeEgGscaA'
REGEX = /
# possible space, followed by...
(?:\s*
# percent sign, followed by...
%
# another percent sign, or...
(?:%|
# optional assignment suppression flag
\*?
# optional maximum field width
\d*
# named character class, ...
(?:\[\[:\w+:\]\]|
# traditional character class, or...
\[[^\]]*\]|
# specifier letter.
[#{SPECIFIERS}])))|
# or miscellaneous characters
[^%\s]+/ix
def initialize(str)
@specs = []
@i = 1
s = str.to_s
return unless /\S/.match(s)
@space = true if /\s\z/.match(s)
@specs.replace s.scan(REGEX).map {|spec| FormatSpecifier.new(spec) }
end
def to_s
@specs.join('')
end
def prune(n=matched_count)
n.times { @specs.shift }
end
def spec_count
@specs.size
end
def last_spec
@i == spec_count - 1
end
def match(str)
accum = []
@string_left = str
@matched_count = 0
@specs.each_with_index do |spec,i|
@i=i
@last_spec_tried = spec
@last_match_tried = spec.match(@string_left)
break unless @last_match_tried
@matched_count += 1
accum << spec.conversion
@string_left = @last_match_tried.post_match
break if @string_left.empty?
end
return accum.compact
end
end
# :startdoc:
end
class IO
#:stopdoc:
# The trick here is doing a match where you grab one *line*
# of input at a time. The linebreak may or may not occur
# at the boundary where the string matches a format specifier.
# And if it does, some rule about whitespace may or may not
# be in effect...
#
# That's why this is much more elaborate than the string
# version.
#
# For each line:
#
# Match succeeds (non-emptily)
# and the last attempted spec/string sub-match succeeded:
#
# could the last spec keep matching?
# yes: save interim results and continue (next line)
#
# The last attempted spec/string did not match:
#
# are we on the next-to-last spec in the string?
# yes:
# is fmt_string.string_left all spaces?
# yes: does current spec care about input space?
# yes: fatal failure
# no: save interim results and continue
# no: continue [this state could be analyzed further]
#
#:startdoc:
# Scans the current string until the match is exhausted,
# yielding each match as it is encountered in the string.
# A block is not necessary though, as the results will simply
# be aggregated into the final array.
#
# "123 456".block_scanf("%d")
# # => [123, 456]
#
# If a block is given, the value from that is returned from
# the yield is added to an output array.
#
# "123 456".block_scanf("%d") do |digit,| # the ',' unpacks the Array
# digit + 100
# end
# # => [223, 556]
#
# See Scanf for details on creating a format string.
#
# You will need to require 'scanf' to use IO#scanf.
def scanf(str,&b) #:yield: current_match
return block_scanf(str,&b) if b
return [] unless str.size > 0
start_position = pos rescue 0
matched_so_far = 0
source_buffer = ""
result_buffer = []
final_result = []
fstr = Scanf::FormatString.new(str)
loop do
if eof || (tty? &&! fstr.match(source_buffer))
final_result.concat(result_buffer)
break
end
source_buffer << gets
current_match = fstr.match(source_buffer)
spec = fstr.last_spec_tried
if spec.matched
if spec.mid_match?
result_buffer.replace(current_match)
next
end
elsif (fstr.matched_count == fstr.spec_count - 1)
if /\A\s*\z/.match(fstr.string_left)
break if spec.count_space?
result_buffer.replace(current_match)
next
end
end
final_result.concat(current_match)
matched_so_far += source_buffer.size
source_buffer.replace(fstr.string_left)
matched_so_far -= source_buffer.size
break if fstr.last_spec
fstr.prune
end
begin
seek(start_position + matched_so_far, IO::SEEK_SET)
rescue Errno::ESPIPE
end
soak_up_spaces if fstr.last_spec && fstr.space
return final_result
end
private
def soak_up_spaces
c = getc
ungetc(c) if c
until eof ||! c || /\S/.match(c.chr)
c = getc
end
ungetc(c) if (c && /\S/.match(c.chr))
end
def block_scanf(str)
final = []
# Sub-ideal, since another FS gets created in scanf.
# But used here to determine the number of specifiers.
fstr = Scanf::FormatString.new(str)
last_spec = fstr.last_spec
begin
current = scanf(str)
break if current.empty?
final.push(yield(current))
end until eof || fstr.last_spec_tried == last_spec
return final
end
end
class String
# :section: scanf
#
# You will need to require 'scanf' to use these methods
# Scans the current string. If a block is given, it
# functions exactly like block_scanf.
#
# arr = "123 456".scanf("%d%d")
# # => [123, 456]
#
# require 'pp'
#
# "this 123 read that 456 other".scanf("%s%d%s") {|m| pp m}
#
# # ["this", 123, "read"]
# # ["that", 456, "other"]
# # => [["this", 123, "read"], ["that", 456, "other"]]
#
# See Scanf for details on creating a format string.
#
# You will need to require 'scanf' to use String#scanf
def scanf(fstr,&b) #:yield: current_match
if b
block_scanf(fstr,&b)
else
fs =
if fstr.is_a? Scanf::FormatString
fstr
else
Scanf::FormatString.new(fstr)
end
fs.match(self)
end
end
# Scans the current string until the match is exhausted
# yielding each match as it is encountered in the string.
# A block is not necessary as the results will simply
# be aggregated into the final array.
#
# "123 456".block_scanf("%d")
# # => [123, 456]
#
# If a block is given, the value from that is returned from
# the yield is added to an output array.
#
# "123 456".block_scanf("%d) do |digit,| # the ',' unpacks the Array
# digit + 100
# end
# # => [223, 556]
#
# See Scanf for details on creating a format string.
#
# You will need to require 'scanf' to use String#block_scanf
def block_scanf(fstr) #:yield: current_match
fs = Scanf::FormatString.new(fstr)
str = self.dup
final = []
begin
current = str.scanf(fs)
final.push(yield(current)) unless current.empty?
str = fs.string_left
end until current.empty? || str.empty?
return final
end
end
module Kernel
private
# Scans STDIN for data matching +format+. See IO#scanf for details.
#
# See Scanf for details on creating a format string.
#
# You will need to require 'scanf' to use Kernel#scanf.
def scanf(format, &b) #:doc:
STDIN.scanf(format ,&b)
end
end
scanf-1.0.0/scanf.gemspec 0000664 0000000 0000000 00000001604 13213434112 0015234 0 ustar 00root root 0000000 0000000 # coding: utf-8
# frozen_string_literal: true
Gem::Specification.new do |spec|
spec.name = "scanf"
spec.version = "1.0.0"
spec.date = '2017-12-11'
spec.authors = ["David Alan Black"]
spec.email = ['dblack@superlink.net']
spec.summary = "scanf is an implementation of the C function scanf(3)."
spec.description = "scanf is an implementation of the C function scanf(3)."
spec.homepage = "https://github.com/ruby/scanf"
spec.license = "BSD-2-Clause"
spec.files = ["lib/scanf.rb"]
spec.bindir = "exe"
spec.executables = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
spec.require_paths = ["lib"]
spec.required_ruby_version = ">= 2.3.0"
spec.add_development_dependency "bundler", "~> 1.14"
spec.add_development_dependency "rake", "~> 10.0"
spec.add_development_dependency "test-unit"
end
scanf-1.0.0/test/ 0000775 0000000 0000000 00000000000 13213434112 0013553 5 ustar 00root root 0000000 0000000 scanf-1.0.0/test/scanf/ 0000775 0000000 0000000 00000000000 13213434112 0014645 5 ustar 00root root 0000000 0000000 scanf-1.0.0/test/scanf/data.txt 0000664 0000000 0000000 00000000065 13213434112 0016320 0 ustar 00root root 0000000 0000000 this is 33 a fun
little input file
with
characters
scanf-1.0.0/test/scanf/test_scanf.rb 0000664 0000000 0000000 00000027431 13213434112 0017332 0 ustar 00root root 0000000 0000000 # frozen_string_literal: false
# $Id$
#
# scanf for Ruby
#
# Unit tests
#
require 'scanf.rb'
require 'test/unit'
require 'tempfile'
# Comment out either of these lines to skip those tests.
class TestStringScanf < Test::Unit::TestCase;end
class TestIOScanf < Test::Unit::TestCase;end
module ScanfTests
def tests
[
# Scratchpad
[ "%2[a]", "nbc", []],
[ "%*d %*3d %*s", "123 +456 abc", [] ],
[ "%d%c", "123 x", [ 123, " " ] ],
[ "%d%c", "123x", [ 123, "x" ] ],
[ "%d %c", "123x", [ 123, "x" ] ],
[ "%d %c", "123 x", [ 123, "x" ] ],
# Testing failures
[ "%x", "x", [] ],
[ "%2x", "x", [] ],
[ "%i", "x", [] ],
# ]; end; def nothing; [
[ "%2i", "x", [] ],
[ "%2o", "x", [] ],
[ "%d", "x", [] ],
[ "%2d", "x", [] ],
[ "%3d", "+x3", [] ],
[ "%d%[abc]", "eabc", [] ],
[ "%d\n%[abc]", "\neabc", [] ],
[ "%d%[^abc]", "ghiabc", [ ] ],
[ "%d%[abc]", "abc", [] ],
[ "%d%s", "", [] ],
[ "%d%s", "blah 123 string", [] ],
[ "%[\n]", "abc\n", [] ],
[ "%f", "x", [] ],
[ "%f", "z", [] ],
[ "%f", "z3.2534", [] ],
[ "", "", [] ],
[ "", "abc 123", [] ],
[ '%[^\\w]%c', "a...1", [] ],
# Testing 'x'
[ "%3x", "0xz", [0] ],
# Testing 'i'
[ "%3i", "097", [0] ],
[ "%3i", "0xz", [0] ],
[ "%1i", "3", [ 3 ] ],
[ "%2i", "07", [ 7 ] ],
[ "%2i", "0a", [ 0 ] ],
# Testing 'c'
[ "%3c", "abc", [ "abc" ] ],
[ "%3c", "a\nb", [ "a\nb" ] ],
[ "%3c", "a\nbcd", [ "a\nb" ] ],
[ "%c\n\n", "x\n\n", [ "x" ] ],
[ "%c", "\n", [ "\n" ] ],
[ "%c", "x\n", [ "x" ] ],
[ "%2c", " 123", [" 1"] ],
[ " %c", " x", ["x"] ],
[ "%c", " x", [" "] ],
[ "%c", "123", ["1"] ],
[ "%2c", "123", ["12"] ],
[ "%5c", "a\nb\n\n", [ "a\nb\n\n" ] ],
[ "%6c", "a\nb\n\nx", [ "a\nb\n\nx" ] ],
[ "%5c", "ab\ncd", [ "ab\ncd" ] ],
# Testing 'o'
[ "%3o", "0xz", [0] ],
# Testing 'd'
[ "%d", "\n123", [ 123 ] ],
[ "%d", "\n\n123", [ 123 ] ],
[ "%1d", "2", [2] ],
# Mixed tests
# Includes:
# whitespace/newline
# mixed integer bases
# various mixed specifiers
[ "%[^\\w]%c", "...1", [ "...", "1"] ],
[ "%[abc\n]%d", "a\n\nb\n\nc 123", [ "a\n\nb\n\nc", 123 ] ],
[ "%[abc\n]%d", "a\n\nb\n\nc \t 123", [ "a\n\nb\n\nc", 123 ] ],
[ "%[abc\t]%d", "a\t\tb\t\tc 123", [ "a\t\tb\t\tc", 123 ] ],
[ "%d%3[abc\n]", "123a\nbeaab", [ 123, "a\nb" ] ],
[ "%d%20c", "42 is the key", [ 42, " is the key" ] ],
[ "%d %20c", "42 is the key", [ 42, "is the key" ] ],
[ "%d%3[^abc\n]%d", "123de\nf123", [ 123, "de" ] ],
[ "%d %4c", "3abc", [ 3, "abc" ] ],
[ "%f%d\n%[abc]", "1\neabc", [1.0] ],
[ "%d%3[abc]", "123aaab", [ 123, "aaa" ] ],
[ "%d%3[abc]", "123 aaab", [ 123 ] ],
[ "%d%3[abc]", "123aeaab", [ 123, "a" ] ],
[ "%d%[^abc]", "123defabc", [123, "def" ] ],
[ "%d%3[^abc]", "123defdef", [ 123, "def" ] ],
[ "%d%3[^abc] ", "123defdef ", [ 123, "def" ] ],
[ "%d%3[^abc]ghi", "123defghi", [ 123, "def" ] ],
[ "%d%3[^abc]", "123adefdef", [ 123 ] ],
[ "%d%3[^abc]", "123deafdef", [ 123, "de" ] ],
[ "%d%3[^abc\n]", "123de\nf", [ 123, "de" ] ],
[ "%s%c%c%s", "abc\n\ndef", ["abc", "\n","\n", "def" ] ],
[ "%c%d", "\n\n123", [ "\n",123 ] ],
[ "%s%c%d", "abc\n123", [ "abc", "\n", 123 ] ],
[ "%s%c%d", "abc\n\n123", [ "abc", "\n", 123 ] ],
[ "%c%d", "\t\n123", [ "\t",123 ] ],
[ "%s%c%d", "abc\t\n123", [ "abc", "\t", 123 ] ],
[ "%3c%d", "abc123", [ "abc", 123 ] ],
[ "%3c\n%d", "abc123", [ "abc", 123 ] ],
[ "%3c\n%d", "abc 123", [ "abc", 123 ] ],
[ "%3c %d", "abc123", [ "abc", 123 ] ],
[ "%3c\t%d", "abc \n 123", [ "abc", 123 ] ],
[ "%3c\t%d", "abc \n 123 ", [ "abc", 123 ] ],
[ "%3c%d", "a\nb123", [ "a\nb", 123 ] ],
[ "%f%3c", "1.2x\ny", [ 1.2, "x\ny"] ],
[ "%d\n%d\n%d", "123 456 789", [ 123,456,789 ] ],
[ "%d\n%i%2d%x\n%d", "123 0718932", [ 123, 071, 89, 0x32] ],
[ "%c\n%c", "x y", [ "x", "y" ] ],
[ "%c\t%c", "x y", [ "x", "y" ] ],
[ "%s\n%s", "x y", [ "x", "y" ] ],
[ "%s%s\n", "x y", [ "x", "y" ] ],
[ "%c\n\n%c", "x\n\ny", [ "x", "y" ] ],
[ "%s%d%d", "abc\n123\n456", [ "abc", 123, 456 ] ],
[ "%3s%c%3c%d", "1.2x\n\ny123", [ "1.2", "x", "\n\ny", 123 ] ],
[ "%c\n%c", "x\n\ny", [ "x", "y" ] ],
[ "%c %c", "x\n\ny", [ "x", "y" ] ],
[ "%s\n\n%c", "x\n\ny", [ "x", "y" ] ],
[ "%s\n\n%s", "x\n\ny", [ "x", "y" ] ],
[ "%d\n\n%d", "23\n\n45", [ 23, 45 ] ],
[ "%d\n%d", "23\n\n45", [ 23, 45 ] ],
[ "%c\n\n%c", "x y", [ "x", "y" ] ],
[ "%c%c", "x\n\ny", [ "x", "\n" ] ],
[ "%c%c", "x\n", [ "x", "\n" ] ],
[ "%d%c%c%d", "345 678", [ 345, " ", " ", 678] ],
[ "%d %c%s", "123 x hello", [123, "x", "hello"] ],
[ "%d%2c", "654 123", [654," 1"] ],
[ "%5c%s", "a\nb\n\nxyz", [ "a\nb\n\n","xyz" ] ],
[ "%s%[ xyz]%d", "hello x 32", ["hello", " x ", 32] ],
[ "%5s%8[a-z]%d", "helloblahblah 32", ["hello", "blahblah", 32] ],
[ '%s%[abcde\\s]%d', "hello badea 32", ["hello", " badea ", 32] ],
[ '%d%[\\s]%c', "123 \n\t X", [ 123," \n\t ", "X"] ],
[ "%4s%2c%c", "1.2x\n\ny", [ "1.2x", "\n\n","y"] ],
[ "%f%c %3c%d", "1.2x\n\ny123", [ 1.2, "x", "y12", 3 ] ],
[ "%s%5c", "abc ab\ncd", [ "abc", " ab\nc" ] ],
[ "%5c%f", "ab\ncd1.2", [ "ab\ncd",1.2 ] ],
[ "%5c%c", "ab\ncd1", [ "ab\ncd","1" ] ],
[ "%f%c%2c%d", "1.2x\ny123", [ 1.2, "x", "\ny", 123 ] ],
[ "%f%c%3c", "1.2x\ny123", [ 1.2, "x", "\ny1"] ],
[ "%s\n%s", "blah\n\nand\nmore stuff", [ "blah", "and" ] ],
[ "%o%d%x", "21912a3", [ "21".oct, 912, "a3".hex ] ],
[ "%3o%4d%3x", "21912a3", [ "21".oct, 912, "a3".hex ] ],
[ "%3o%4d%5x", "2191240xa3", [ "21".oct, 9124, "a3".hex ] ],
[ "%3d%3x", "12abc", [12, "abc".hex] ],
[ "%s%i%d", "hello +0xdef 123", [ "hello", "def".hex, 123] ],
[ "%s%i%d", "hello -0xdef 123", [ "hello", -"def".hex, 123] ],
[ "%s%i%i%i%i", "hello 012 -012 100 1", [ "hello", 10, -10, 100, 1 ] ],
[ "%s%i%i%i%i", "hello 012 0x12 100 1", [ "hello", 10, 18, 100, 1 ] ],
[ "%s%5i%3i%4i", "hello 0x123 123 0123", [ "hello", "0x123".hex, 123,"0123".oct] ],
[ "%s%3i%4i", "hello 1230123", [ "hello", 123,"0123".oct] ],
[ "%s%3i", "hello 1230", [ "hello", 123] ],
[ "%s%5x%d", "hello 0xdef 123", [ "hello", "def".hex, 123] ],
[ "%s%6x%d", "hello +0xdef 123", [ "hello", "def".hex, 123] ],
[ "%s%6x%d", "hello -0xdef 123", [ "hello", -"def".hex, 123] ],
[ "%s%4x%d", "hello -def 123", [ "hello", -"def".hex, 123] ],
[ "%s%3x%d", "hello def 123", [ "hello", "def".hex, 123] ],
[ "%s%x%d", "hello -def 123", [ "hello", -"def".hex, 123] ],
[ "%s%x%d", "hello -0xdef 123", [ "hello", -"def".hex, 123] ],
[ "%s%x%d", "hello 0xdef 123", [ "hello", "def".hex, 123] ],
[ "%s%d%x%s", "hello 123 abc def", [ "hello", 123, "abc".hex, "def"] ],
[ "%s%d%o%d", "hello 012 012 100", [ "hello", 12, 10, 100 ] ],
[ "%s%d%o%d", "hello 012 -012 100", [ "hello", 12, -10, 100 ] ],
[ "%s%o%x%d", "hello 012 0x12 100", [ "hello", 10, 18, 100 ] ],
[ "%s%d%o%d", "hello 012 +01288", [ "hello", 12, 10, 88 ] ],
[ "%f %d %s", "12.3e23 45 string", ["12.3e23".to_f, 45, "string"] ],
[ "%f %d %s", "12.3e+23 45 string", ["12.3e23".to_f, 45, "string"] ],
[ "%f %d %s", "12.3e-23 45 string", ["12.3e-23".to_f, 45, "string"] ],
[ "%f %d %s", "-12.3e-23 45 string", ["-12.3e-23".to_f, 45, "string"] ],
[ "%f %d %s", "12.e23 45 string", ["12.e23".to_f, 45, "string"] ],
[ "%5f %d %s", "1.2e23 string", ["1.2e2".to_f, 3, "string"] ],
[ "%5f%d %s", "1.2e23 string", ["1.2e2".to_f, 3, "string"] ],
[ "%5f%d %d %s", "1.2e23 45 string", ["1.2e2".to_f, 3, 45, "string"] ],
[ "%6f %d %d %s", "+1.2e23 45 string", ["1.2e2".to_f, 3, 45, "string"] ],
[ "%d %d", "123 \n 345", [123, 345] ],
[ "%d %*d", "123 \n 345", [123] ],
[ "%d %3d789", "123 +45789", [123, 45] ],
[ "%d %3d%d", "123 +456789", [123, 45, 6789] ],
[ "%d %3dabc", "123 456abc", [123, 456] ],
[ "%d %s", "123abc", [123, "abc"] ],
[ "%d%s %s", "123 abc def", [123, "abc", "def"] ],
[ "%s%s", "abc123 def", ["abc123", "def"] ],
[ "%s%s %s", "123 abc def", ["123", "abc", "def"] ],
[ "%s%%%s", "abc % def", ["abc", "def"] ],
[ "%d %3d %s", "+123 456abc", [123, 456, "abc"] ],
[ "%d %3d %s", "123 456abc", [123, 456, "abc"] ],
[ "%d %3d %s", "123 +456 abc", [123, 45, "6"] ],
[ "%d %3d %s", "-123-456abc", [-123, -45, "6abc"] ],
[ "%dabc%d", "123abc345", [123, 345] ],
[ "%d%5s%d", "123 abcde12", [123, "abcde", 12] ],
[ "%5d%5s%5d", "12345abcde67890", [12345, "abcde", 67890] ],
[ "%5d%*5s%5d", "12345abcde67890", [12345, 67890] ],
[ " 12345%5s%5d", "12345abcde67890", [ "abcde", 67890] ],
[ "%5dabcde%5d", "12345abcde67890", [ 12345, 67890] ],
[ "%s%%%*s", "abc % def", ["abc"] ],
[ "%*6s %d", "string 123", [123] ],
[ "%d %*3d %s", "-123-456abc", [-123, "6abc"] ],
[ "%d%s", "123", [123] ],
[ "%s%d", "abc", ["abc"] ],
[ "%f%x", "3.2e45x", ["3.2e45x".to_f] ],
[ "%*5f%d %d %s", "1.2e23 45 string", [3, 45, "string"] ],
[ "%5f%*d %d %s", "1.2e23 45 string", ["1.2e2".to_f, 45, "string"] ],
[ "%*5f%*d %*d %s", "1.2e23 45 string", ["string"] ],
[ "%f %*d %s", "12.e23 45 string", ["12.e23".to_f, "string"] ],
[ "%s %f %s %d %x%c%c%c%c",
"float: 1.2e23 dec/hex: 135a23 abc",
["float:", "1.2e23".to_f, "dec/hex:", 135, "a23".hex, " ", "a", "b", "c" ] ],
# Testing 's'
[ "%s\n", "blah\n\n\n", [ "blah" ] ],
# Testing '['
[ "%[a\nb]", "a\nb", [ "a\nb" ] ],
[ "%[abc]", "acb", [ "acb" ] ],
[ "%[abc\n]", "a\nb", [ "a\nb" ] ],
[ "%[^abc]", "defabc", [ "def" ] ],
[ "%[-abc]", "abc-cba", [ "abc-cba" ] ],
[ "%[\n]", "\n", [ "\n" ] ],
[ "%[\n]", "\nabc", [ "\n" ] ],
[ "%[\n\t]", "\t\n", [ "\t\n" ] ],
[ "%[a-f]", "abczef", [ "abc" ] ],
[ "%d%3[[:lower:]] %f", "123ade1.2", [ 123,"ade",1.2 ] ],
[ "%d%3[[:lower:]] %f", "123ad1.2", [ 123,"ad",1.2 ] ],
[ "%d%3[[:lower:]] %f", "123 ad1.2", [ 123 ] ],
[ "%d%[[:lower:]]", "123abcdef1.2", [ 123, "abcdef" ] ],
[ "%[[:lower:]]%d", "abcdef123", [ "abcdef", 123 ] ],
[ "%[[:digit:]]%[[:alpha:]]", "123abcdef", [ "123", "abcdef" ] ],
[ "%[[:digit:]]%d", "123 123", [ "123", 123 ] ],
[ "%[[:upper:]]", "ABCdefGHI", [ "ABC" ] ],
# Testing 'f'
[ "%2f", "x", [] ],
[ "%F", "1.23e45", [1.23e+45] ],
[ "%e", "3.25ee", [3.25] ],
[ "%E", "3..25", [3.0] ],
[ "%g", "+3.25", [3.25] ],
[ "%G", "+3.25e2", [325.0] ],
[ "%f", "3.z", [3.0] ],
[ "%a", "0X1P+10", [1024.0] ],
[ "%a", "0X1P10", [1024.0] ],
[ "%A", "0x1.deadbeefp+99", [1.1851510441583988e+30] ],
# Testing embedded matches including literal '[' behavior
[",%d,%f", ",10,1.1", [10,1.1] ],
[" ,%d,%f", " ,10,1.1", [10,1.1] ],
["[%d,%f", "[10,1.1", [10,1.1] ],
[" [%d,%f", " [10,1.1", [10,1.1] ],
]
end
def each_test
self.tests.each do |test|
format, string, = test
yield test, "#{string.dump}(#{format.dump})"
end
end
end
class TestStringScanf
include Scanf
extend ScanfTests
self.each_test do |test, i|
define_method("test_#{i}") do ||
assert_equal(test[2], test[1].scanf(test[0]))
end
end
end
class TestIOScanf
include Scanf
extend ScanfTests
self.each_test do |test, i|
define_method("test_#{i}") do ||
Tempfile.create("iotest.dat") do |fh|
fh.print test[1]
fh.rewind
assert_equal(test[2], fh.scanf(test[0]))
end
end
end
end
scanf-1.0.0/test/scanf/test_scanfblocks.rb 0000664 0000000 0000000 00000003340 13213434112 0020521 0 ustar 00root root 0000000 0000000 # frozen_string_literal: false
# $Id$
#
# scanf for Ruby
#
# Some not very comprehensive tests of block behavior.
require 'test/unit'
require 'scanf'
require 'tmpdir'
class TestScanfBlock < Test::Unit::TestCase
def setup
@str = <<-EOS
Beethoven 1770
Bach 1685
Handel 1685
Scarlatti 1685
Brahms 1833
EOS
end
alias set_up setup
def test_str1
res = @str.scanf("%s%d") { |name, year| "#{name} was born in #{year}." }
assert_equal(res,
[ "Beethoven was born in 1770.",
"Bach was born in 1685.",
"Handel was born in 1685.",
"Scarlatti was born in 1685.",
"Brahms was born in 1833." ])
end
def test_str2
names = @str.scanf("%s%d") { |name, year| name.upcase }
assert_equal(names, ["BEETHOVEN", "BACH", "HANDEL", "SCARLATTI", "BRAHMS"])
end
def test_str3
assert_equal("".scanf("%d%f%s") {}, [])
end
def test_str4
assert_equal("abc".scanf("%d%f%s") {}, [])
end
def test_str5
assert_equal("abc".scanf("") {}, [])
end
def test_io1
fn = "#{Dir.tmpdir}/iotest.dat.#{$$}"
File.open(fn, "w") { |fh| fh.puts(@str) }
fh = File.open(fn, "rb")
res = fh.scanf("%s%d") { |name, year| "#{name} was born in #{year}." }
assert_equal(
[ "Beethoven was born in 1770.",
"Bach was born in 1685.",
"Handel was born in 1685.",
"Scarlatti was born in 1685.",
"Brahms was born in 1833." ],res)
fh.close
ensure
File.delete(fn)
end
def test_io2
fn = "#{Dir.tmpdir}/iotest.dat.#{$$}"
File.open(fn, "w").close
fh = File.open(fn,"rb")
assert_equal(fh.scanf("") {}, [])
fh.seek(0)
assert_equal(fh.scanf("%d%f%s") {}, [])
fh.close
ensure
File.delete(fn)
end
end
scanf-1.0.0/test/scanf/test_scanfio.rb 0000664 0000000 0000000 00000000645 13213434112 0017660 0 ustar 00root root 0000000 0000000 # frozen_string_literal: false
# $Id$
#
# scanf for Ruby
#
# Ad hoc tests of IO#scanf (needs to be expanded)
require "scanf"
class TestScanfIO < Test::Unit::TestCase
def test_io
fh = File.new(File.join(File.dirname(__FILE__), "data.txt"), "r")
assert_equal(0, fh.pos)
assert_equal(["this", "is"], fh.scanf("%s%s"))
assert_equal([33, "little"], fh.scanf("%da fun%s"))
ensure
fh.close
end
end