From 14419f066973d26192bea9b97707bd872af772c7 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Thu, 2 Mar 2023 17:09:02 -0500
Subject: initial commit

---
 section-parse.rb | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 section-parse.rb

(limited to 'section-parse.rb')

diff --git a/section-parse.rb b/section-parse.rb
new file mode 100644
index 0000000..0d63f38
--- /dev/null
+++ b/section-parse.rb
@@ -0,0 +1,47 @@
+#!/usr/bin/env ruby
+
+#
+# section-parse.rb: scan standard input and do the following:
+#
+# 1. look for a section that begins with "test-text "STUFF/foo" and ends
+#    with a blank line.
+# 2. print the "bar.DIGITS" suffix for each line in the section
+#
+# Example:
+#   > cat input.txt
+#   test-text "blah blah blah garbage/foo"
+#   random crap bar.1
+#   random crap bar.2
+#   random crap bar.3
+#   random crap bar.4
+#   
+#   test-text "blah blah blah garbage/apple"
+#   random crap bar.1
+#   random crap bar.2
+#   random crap bar.3
+#   random crap bar.4
+#   > ./section-parse.rb < input.txt
+#   bar.1
+#   bar.2
+#   bar.3
+#   bar.4
+#
+
+# default state
+in_body = false
+
+# read lines
+ARGF.readlines.map { |s| s.strip }.each do |s|
+  # check if either of the following conditions are true:
+  #
+  # 1. we are outside the section and the current line is the matching
+  #    section header
+  # 2. we are in the section body and the current line is empty
+  if (!in_body && s =~ /^test-text ".*\/foo"$/) || (in_body && s =~ /^\s*$/)
+    # toggle state
+    in_body = !in_body
+  elsif in_body
+    # print "bar.NUMBERS" line suffix
+    puts s.gsub(/.*(bar\.\d+)$/, '\1')
+  end
+end
-- 
cgit v1.2.3