#set text(font: "FreeSans")
#set page(margin: 1cm)

#show link: item => [
  #text(blue)[#item]
]

#show raw: set text(font: "Fira Code")
#show raw.where(block: false): item => {
  box(inset: (x: 1pt))[#box(
      stroke: luma(40%) + .1pt,
      fill: luma(97%),
      outset: (y: 3pt, x: 1pt),
      radius: 2pt,
    )[#item]]
}
#show raw.where(block: true): item => {
  set par(leading: .5em, justify: false)
  align(center)[
    #block(
      outset: 0pt,
      stroke: luma(40%) + .5pt,
      fill: luma(97%),
      radius: 3pt,
    )[
      #align(left)[#rect(
          radius: (
            top-left: 3pt,
            bottom-right: 3pt,
          ),
          inset: .3em,
          stroke: (
            bottom: luma(40%) + .5pt,
            right: luma(40%) + .5pt,
          ),
          fill: blue.transparentize(95%),
        )[#text(fill: blue)[#item.lang]]]
      #v(-1em)
      #box(inset: 4pt)[#item]
    ]]
}

#let answer(ans) = {
  set text(size: .95em, style: "italic", fill: rgb(64, 90, 95))
  block(
    inset: 4pt,
    stroke: blue + .5pt,
    fill: rgb(0, 149, 255, 5%),
    radius: 3pt,
  )[#for child in ans.fields().children {
      if child.func() == raw {
        text(fill: black)[#child]
      } else {
        child
      }
    }
  ]
}

#align(center)[#text(size: 1.3em)[= CS 3424 Quiz - Week 5]]
#align(center)[
  #("Price Hiller", "zfp106", "Quiz 4", "CS 3424").join(" ⋄ ")
  #v(-.5em)
  #text(size: 0.8em)[#block(
      inset: 4pt,
      radius: 1pt,
      stroke: luma(40%) + .2pt,
      width: 40%,
      fill: luma(97%),
    )[#par(leading: .4em)[If you are interested in viewing the source code of this document, you can do so
        by clicking
        #link(
          "https://git.orion-technologies.io/Price/college/src/branch/Development/Summer-2024/CS-3424/Quizzes/Quiz-4/Assignment.typ",
          "here.",
        )]]]
  #v(-.5em)
  #line(length: 100%, stroke: (dash: "densely-dotted"))
  #v(-.5em)
]

1. Create a ```bash sed``` script which makes all comments consistent. Comment lines will begin with either "\//" or "\#" and may have leading spaces or tabs. Replace these instances with "\//" followed by a space and the rest of the original line (the comment itself). Also remove any lines beginning with "%". Include the command to run the script for a file named `file1.php` (contents below) and print output to `file1Clean.php`.
  #align(center)[
    ```php
    // file1.php
     // Week 4
     // Quiz
    <?php
    # print something
    echo “hello world”;
           # close php tag
    ?>
    % this isn’t a correct comment
    ```
  ]

  #answer[
    I made two assumptions about the desired output:
    1. The assignment wants the leading spaces or tabs removed from the comment line
    2. The assignment wants lines that have a comment symbol and no spaces after the symbol to also be supported

    The script below assumes it will be run via `sed -f <sed-script-here> file1.php`.
    ```sed
    s/^\s*\(#\|\/\/\)\s*\(.*\)$/\/\/ \2/g
    /^%/d
    w file1Clean.php
    ```

    // #figure(
    //   image("assets/script-in-action.png", height: 40%),
    //   caption: [],
    // ) <fig-script-in-action>
    #figure(
      box(clip: true, radius: 4pt)[#image(
          "assets/script-in-action.png",
          height: 40%,
          fit: "contain",
          alt: "",
        )],
      caption: [
        Image of the provided ```bash sed``` script being ran and showing the output it wrote to `file1Clean.php`. Notice that the second ```bash cat``` invocation returns an error showing that `file1Clean.php` doesn't exist just yet. The ```bash sed``` invocation afterwards creates `file1Clean.php`.
      ],
    )
  ]