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index.n0m
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index.n0m
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#!/usr/bin/env n0m
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$ #!/bin/bash
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Content-Type: text/html
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# Constants
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# =========
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$ true=1;
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$ false=0;
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#
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$ restaurant_file="restaurants.txt";
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$ title="FeedMe";
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#
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# Components
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# ==========
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#
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# $1: string: input value
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# $2: number: 0=existing restaurant, 1=new restaurant
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$ restaurant_form () {
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$ enforce_arguments "${FUNCNAME[0]}" "$#" 2;
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$ local icon_class;
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$ if [ "$2" -eq 0 ]; then
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$ icon_class="ri-save-2-fill";
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$ else
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$ icon_class="ri-add-line";
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$ fi
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<form class="restaurant-form" method="POST" action="">
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<input type="hidden" name="old" value="<% $1 %>" />
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<input type="text" placeholder="Restaurant" name="new" value="<% $1 %>" />
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<label class="button <% $icon_class %>">
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$ local action;
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$ if [ "$2" -eq 0 ]; then
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$ action="save";
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$ else
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$ action="add";
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$ fi;
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<input type="submit" name="action" value="<% $action %>" />
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</label>
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$ if [ "$2" -eq 0 ]; then
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<label class="button ri-delete-bin-2-fill">
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<input type="submit" name="action" value="delete" />
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</label>
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$ fi
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</form>
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$ }
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#
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# Utility Functions
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# =================
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#
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# $1: string: function name
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# $2: number: $#
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# $3: number: expected number of arguments
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$ enforce_arguments () {
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$ if [ "$2" -lt "$3" ]; then
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$ printf '%s %s %s\n' 'Function:' "$1" 'called with too few arguments';
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$ exit 1;
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$ elif [ "$2" -gt "$3" ]; then
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$ printf '%s %s %s\n' 'Function:' "$1" 'called with too many arguments';
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$ exit 1;
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$ fi;
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$ }
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#
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$ decode_uri () {
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$ local i="${*//+/ }";
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$ echo -e "${i//%/\\x}";
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$ }
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#
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#
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# Restaurant List Functions
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# =========================
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#
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# $1: string: restaurant to remove
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$ remove_restaurant () {
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$ enforce_arguments "${FUNCNAME[0]}" "$#" 1;
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$ cat "$restaurant_file" | grep -Fxv "$1" | tee "$restaurant_file" >/dev/null;
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$ }
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#
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# $1: string: restuarant to add
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$ add_restaurant () {
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$ enforce_arguments "${FUNCNAME[0]}" "$#" 1;
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$ cat "$restaurant_file" |\
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$ (grep -Fxv "$1"; printf '%s\n' "$1") |\
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$ tee "$restaurant_file" >/dev/null;
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$ }
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#
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# $1 (optional): number: 0=don't overwrite, 1=overwrite
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$ todays_restaurant () {
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$ local today="$(date +'%Y%m%d')";
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$ local filename="$today.pick";
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$ if [ -n "$1" ] && [ "$1" -ne 0 ]; then
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$ rm "$filename";
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$ fi;
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$ if [ ! -f "$filename" ]; then
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$ shuf -n 1 "$restaurant_file" > "$filename";
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$ fi;
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$ cat "$filename";
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$ }
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#
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# Initialization
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# ==============
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#
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# Make sure restaurant file eixsts
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$ touch -a "$restaurant_file";
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#
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# Parse body
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# ----------
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$ declare -A body;
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$ while IFS= read -d '&' -r pair || [ "$pair" ]; do
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$ name=$(decode_uri "${pair%%=*}");
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$ value=$(decode_uri "${pair#*=}");
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$ if [ -n "$name" ]; then
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$ body["$name"]="$value";
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$ fi;
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$ done #>
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#
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# Perform requested action
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# ------------------------
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$ case "${body['action']}" in
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$ add)
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$ add_restaurant "${body['new']}";
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$ ;;
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$ delete)
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$ remove_restaurant "${body['old']}";
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$ ;;
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$ save)
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$ remove_restaurant "${body['old']}";
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$ add_restaurant "${body['new']}";
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$ ;;
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$ new_restaurant)
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$ todays_restaurant $true >/dev/null;
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$ ;;
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$ esac
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#
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#
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<!doctype html>
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<html>
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<head>
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<title><% $title %></title>
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<style>
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:root {
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--border-color: gray;
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}
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html, body {
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margin: 0;
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padding: 0;
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}
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html {
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font-family: sans-serif;
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}
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body {
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background-color: #f5f5f5;
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}
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\#title {
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color: rgba(0, 0, 0, 0.15);
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text-align: center;
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}
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\#content {
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margin: 0 auto;
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width: fit-content;
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min-width: 400px;
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}
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\#todays-restaurant {
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text-align: center;
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font-size: 1.3em;
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}
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\#restaurant-list {
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list-style-type: none;
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padding: 0;
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}
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.restaurant-form {
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display: flex;
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}
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.restaurant-form input[type='text'] {
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flex-grow: 1;
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border: 1px solid var(--border-color);
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padding: 0.4em 0.7em;
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}
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.restaurant-form label.button {
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border-radius: 0;
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}
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.restaurant-form > :not(:first-child) {
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border-left: 0;
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}
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\#restaurant-list > li:not(:last-child) .restaurant-form > * {
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border-bottom: 0;
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}
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label.button {
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display: flex;
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border: 1px solid var(--border-color);
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border-radius: 0.3em;
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padding: 0.2em 0.5em;
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background: #FDFDFD;
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align-items: center;
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}
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label.button > span:first-of-type {
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flex-grow: 1;
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text-align: center;
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}
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label.button > input {
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display: none;
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}
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</style>
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<link
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href="https://cdn.jsdelivr.net/npm/remixicon@2.5.0/fonts/remixicon.css"
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rel="stylesheet"
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>
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</head>
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<body>
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<div id="content">
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<h1 id="title"><% $title %></h1>
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<p id="todays-restaurant">
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Today's Restaurant: <strong><$% todays_restaurant %></strong>
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<form method="POST" action="">
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<label class="button">
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<span>I want to go somewhere else</span>
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<input type="submit" name="action" value="new_restaurant" />
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</label>
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</form>
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</p>
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<ul id="restaurant-list">
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$ while IFS= read -r line || [ "$line" ]; do
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<li><$!% restaurant_form "$line" $false %></li>
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$ done <restaurants.txt #>
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<li><$!% restaurant_form "" $true %></li>
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</ul>
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</div>
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</body>
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</html>
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