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Fixed an issue with IOSource#read_until when reaching the end of a file #288

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Merged
merged 1 commit into from
Sep 4, 2025
Merged

Fixed an issue with IOSource#read_until when reaching the end of a file #288

merged 1 commit into from
Sep 4, 2025

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naitoh
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@naitoh naitoh commented Aug 28, 2025 •
edited by kou
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Fix GH-287

Why?

If @source = nil is set at the end of the file, prevent IOSource#read_until from raising an error.

/.gems/gems/rexml-3.4.2/lib/rexml/parsers/baseparser.rb:524:in 'REXML::Parsers::BaseParser#pull_event': #<NoMethodError: undefined method 'eof?' for nil> (REXML::ParseException)
.gems/gems/rexml-3.4.2/lib/rexml/source.rb:275:in 'REXML::IOSource#read_until'

rexml/lib/rexml/source.rb

Lines 266 to 276 in 185bdc7

def read_until(term)
pattern = Private::PRE_DEFINED_TERM_PATTERNS[term] || /#{Regexp.escape(term)}/
term = @encoded_terms[term] ||= encode(term)
until str = @scanner.scan_until(pattern)
break if @source.nil?
break if @source.eof?
@scanner << readline(term)
end
if str
read if @scanner.eos? and !@source.eof?
str

  1. Reaching the end of a file in IOSource#read.
  2. If the string remains in @scanner.rest, use @scanner.scan_until(pattern) to return str.
  3. If @source is nil, an exception occurs.

@naitoh naitoh marked this pull request as draft August 28, 2025 13:24
@naitoh naitoh marked this pull request as ready for review September 3, 2025 08:35
@naitoh naitoh requested a review from kou September 3, 2025 08:50
kou
kou reviewed Sep 3, 2025
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@naitoh naitoh force-pushed the fix_read_until_error branch from 3ed00ef to cd1c156 Compare September 3, 2025 14:14
@naitoh naitoh changed the title Fixed initialization processing when reaching the end of a file in IOSource#read Fixed an issue with IOSource#read_until when reaching the end of a file Sep 3, 2025
@naitoh naitoh requested a review from kou September 3, 2025 14:18
kou
kou reviewed Sep 4, 2025
View reviewed changes
@naitoh
Fixed an issue with IOSource#read_until when reaching the end of a …
9ddcf5c 
…file

## Why?
If `@source = nil` is set at the end of the file, prevent `IOSource#read_until` from raising an error.

> /.gems/gems/rexml-3.4.2/lib/rexml/parsers/baseparser.rb:524:in 'REXML::Parsers::BaseParser#pull_event': #<NoMethodError: undefined method 'eof?' for nil> (REXML::ParseException)
> .gems/gems/rexml-3.4.2/lib/rexml/source.rb:275:in 'REXML::IOSource#read_until'

See: https://github.com/ruby/rexml/blob/185bdc737da406ba4f9564726849ad3477858eb2/lib/rexml/source.rb#L266-L276
@naitoh naitoh force-pushed the fix_read_until_error branch from cd1c156 to 9ddcf5c Compare September 4, 2025 10:46
@naitoh naitoh requested a review from kou September 4, 2025 10:51
@kou kou merged commit 1531862 into ruby:master Sep 4, 2025
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kou commented Sep 4, 2025

Thanks.

@naitoh naitoh deleted the fix_read_until_error branch September 7, 2025 08:14
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