initial commit

.gitignore

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+.stack-work/
+.idea
+*~

ChangeLog.md

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+# Changelog for hrep
+
+## Unreleased changes

LICENSE

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+Copyright Author name here (c) 2021
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * 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.
+
+    * Neither the name of Author name here nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
+OWNER 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.

README.md

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+# hrep

Setup.hs

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+import Distribution.Simple
+main = defaultMain

app/Main.hs

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+module Main where
+
+import Lib
+import System.Environment
+
+main :: IO ()
+main = do
+  args <- getArgs
+  start args

hrep.cabal

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+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.33.0.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 1cf5881e6c4dddde1098f346e24a54eef59b5ddc90e166cc9648fd8a50a2cf45
+
+name:           hrep
+version:        0.1.0.0
+description:    Please see the README on GitHub at <https://github.com/Github username here/hrep#readme>
+homepage:       https://github.com/Github username here/hrep#readme
+bug-reports:    https://github.com/Github username here/hrep/issues
+author:         Author name here
+maintainer:     Author email here
+copyright:      2019 Author name here
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+extra-source-files:
+    README.md
+    ChangeLog.md
+
+source-repository head
+  type: git
+  location: https://github.com/Github username here/hrep
+
+library
+  exposed-modules:
+      Lib
+  other-modules:
+      Paths_hrep
+  hs-source-dirs:
+      src
+  build-depends:
+      base >=4.7 && <5
+  default-language: Haskell2010
+
+executable hrep-exe
+  main-is: Main.hs
+  other-modules:
+      Paths_hrep
+  hs-source-dirs:
+      app
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base >=4.7 && <5
+    , hrep
+  default-language: Haskell2010
+
+test-suite hrep-test
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Paths_hrep
+  hs-source-dirs:
+      test
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base >=4.7 && <5
+    , hrep
+  default-language: Haskell2010

hrep.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="HASKELL_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/app" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/.stack-work" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="base-4.14.1.0" level="project" />
+    <orderEntry type="library" name="ghc-prim-0.6.1" level="project" />
+    <orderEntry type="library" name="integer-gmp-1.0.3.0" level="project" />
+  </component>
+</module>

package.yaml

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+name:                hrep
+version:             0.1.0.0
+github:              "Github username here/hrep"
+license:             BSD3
+author:              "Author name here"
+maintainer:          "Author email here"
+copyright:           "2019 Author name here"
+
+extra-source-files:
+- README.md
+- ChangeLog.md
+
+# Metadata used when publishing your package
+# synopsis:            Short description of your package
+# category:            App category here
+
+# To avoid duplicated efforts in documentation and dealing with the
+# complications of embedding Haddock markup inside cabal files, it is
+# common to point users to the README.md file.
+description:         Please see the README on GitHub at <https://github.com/Github username here/hrep#readme>
+
+dependencies:
+- base >= 4.7 && < 5
+
+library:
+  source-dirs: src
+
+executables:
+  hrep-exe:
+    main:                Main.hs
+    source-dirs:         app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - hrep
+
+tests:
+  hrep-test:
+    main:                Spec.hs
+    source-dirs:         test
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - hrep

src/Lib.hs

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+module Lib
+  ( start,
+  )
+where
+
+import System.IO
+import Data.List (isInfixOf)
+
+start :: [String] -> IO ()
+start args = do
+  content <- getFileContent $ head args
+  let allLines = lines content
+  let filtered = filterLines allLines $ get2ndElement args
+  let filteredMinus = map addLeadMinus filtered
+  printElements $ showWhenNoLines filteredMinus
+
+printElements :: [String] -> IO ()
+printElements [] = return ()
+printElements (x:xs) = do
+  putStrLn x
+  printElements xs
+
+get2ndElement :: [String] -> String
+get2ndElement (_ : x : _) = x
+get2ndElement _ = []
+
+getFileContent :: FilePath -> IO String
+getFileContent path = do
+  file <- openFile path ReadMode
+  hGetContents file
+
+filterLines :: [String] -> String -> [String]
+filterLines [] _ = []
+filterLines [x] query
+  | query `isInfixOf` x = [x]
+  | otherwise = []
+filterLines (x : xs) query
+  | query `isInfixOf` x = x : filterLines xs query
+  | otherwise = filterLines xs query
+
+addLeadMinus :: String -> String
+addLeadMinus [] = []
+addLeadMinus x = "- " ++ x
+
+showWhenNoLines :: [String] -> [String]
+showWhenNoLines [] = ["- No lines found"]
+showWhenNoLines x = x

stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver:
+  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/17/5.yaml
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+#   subdirs:
+#   - auto-update
+#   - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver.
+# These entries can reference officially published versions as well as
+# forks / in-progress versions pinned to a git hash. For example:
+#
+# extra-deps:
+# - acme-missiles-0.3
+# - git: https://github.com/commercialhaskell/stack.git
+#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#
+# extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=2.5"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

stack.yaml.lock

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+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages: []
+snapshots:
+- completed:
+    size: 565266
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/17/5.yaml
+    sha256: 78e8ebabf11406261abbc95b44f240acf71802630b368888f6d758de7fc3a2f7
+  original:
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/17/5.yaml

test.txt

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+old house owner:
+look there were like 34 horror movies shot here do you really want to be the 35-
+family: sold
+Ich hab ein pretty Girl, pretty Girl
+Hob macht nen Rimworld Video
+Rimworld Sales go brrrrrrrrrrrrrrrrrrrrrrr
+ich hoffe du bekommst ein paar shortys
+rrr

test/Spec.hs

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+main :: IO ()
+main = putStrLn "Test suite not yet implemented"