From f3d3e77f0fbf8026893178c51933af0767747eed Mon Sep 17 00:00:00 2001
From: John Hess <john@jthess.com>
Date: Wed, 5 Jun 2024 14:16:00 -0500
Subject: [PATCH] breadcrumbs

---
 assets/css/butter-dir-listing.css            |  31 ++-
 assets/images/home.svg                       |   4 +
 assets/images/next.svg                       |   4 +
 assets/js/butter-dir-listing.js              |  34 ++-
 simulated-usb-butter/johns_folder/index.html | 225 +++++++++++++++++++
 5 files changed, 293 insertions(+), 5 deletions(-)
 create mode 100644 assets/images/home.svg
 create mode 100644 assets/images/next.svg
 create mode 100644 simulated-usb-butter/johns_folder/index.html

diff --git a/assets/css/butter-dir-listing.css b/assets/css/butter-dir-listing.css
index fcd0ccb..e258684 100644
--- a/assets/css/butter-dir-listing.css
+++ b/assets/css/butter-dir-listing.css
@@ -1,9 +1,12 @@
 /* Based on the default lighttpd styles, this butters up the UI */
 
-
-
 body {
     font-family: "Poppins", sans-serif;
+    margin: 0;
+}
+
+a {
+    text-decoration: none;
 }
 
 body>h2 {
@@ -21,6 +24,25 @@ div.foot {
     display: none;
 }
 
+.breadcrumbs {
+    display: flex;
+    align-items: center;
+    margin: 10px;
+    height: 34px;
+    .path-next {
+        margin: 0 5px;
+        height: 12px;
+    }
+}
+
+.crumb {
+    align-items: center;
+    color: black;
+    display: flex;
+    font-family: "Poppins", sans-serif;
+    font-size: 14px;
+}
+
 h2 {
     font-size: 18px;
     font-weight: 500;
@@ -33,6 +55,10 @@ hr {
     margin: 20px 10px;
 }
 
+hr.full-width {
+    margin: 0;
+}
+
 .container {
     display: flex;
     align-items: center;
@@ -41,7 +67,6 @@ hr {
     margin: 10px;
     box-sizing: border-box;
     font-family: "Poppins", sans-serif;
-    text-decoration: none;
 }
 
 .logo-container {
diff --git a/assets/images/home.svg b/assets/images/home.svg
new file mode 100644
index 0000000..494c316
--- /dev/null
+++ b/assets/images/home.svg
@@ -0,0 +1,4 @@
+<svg width="22" height="20" viewBox="0 0 22 18" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path d="M14.6923 18.5H17.7692C18.4492 18.5 19 17.9886 19 17.3571V8.48489C19 8.14203 18.8346 7.81775 18.5485 7.6006L12.3446 2.88714C12.0146 2.63714 11.6015 2.5 11.1762 2.5H10.8246C10.3985 2.5 9.98539 2.63714 9.6554 2.88714L3.45154 7.6006C3.16538 7.81775 3 8.14203 3 8.48489V17.3571C3 17.9886 3.55076 18.5 4.23076 18.5H7.30766C7.64766 18.5 7.92304 18.2443 7.92304 17.9286V12.7857C7.92304 12.1543 8.4738 11.6428 9.1538 11.6428H12.8461C13.5261 11.6428 14.0768 12.1543 14.0768 12.7857V17.9286C14.0768 18.2443 14.3523 18.5 14.6923 18.5Z" fill="black"/>
+</svg>
+    
\ No newline at end of file
diff --git a/assets/images/next.svg b/assets/images/next.svg
new file mode 100644
index 0000000..c04632d
--- /dev/null
+++ b/assets/images/next.svg
@@ -0,0 +1,4 @@
+<svg width="7" height="10" viewBox="0 0 7 10" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path d="M0.316 2.17H1.926L5.314 5.376L1.926 8.596H0.316L3.704 5.376L0.316" fill="black"/>
+</svg>
+    
\ No newline at end of file
diff --git a/assets/js/butter-dir-listing.js b/assets/js/butter-dir-listing.js
index d90823c..819628d 100644
--- a/assets/js/butter-dir-listing.js
+++ b/assets/js/butter-dir-listing.js
@@ -96,8 +96,39 @@ window.onload = function () {
     const { files, folders } = extractDirectoryListing();
     console.log('Files:', files);
     console.log('Folders:', folders);
+    const listDiv = document.querySelector('div.list');
 
-    // insert a new div before div.list
+    // Header with breadcrumbs
+    const usbRoot = "/usb-butter/";
+    const h2Path = document.querySelector('h2').textContent;
+    console.log("H2 Path:", h2Path);
+    const path = h2Path.replace('Index of ', '').replace(usbRoot, '');
+    console.log("Path:", path);
+
+    const breadcrumbs = document.createElement("div");
+    breadcrumbs.classList.add('breadcrumbs');
+    let breadcrumbHTML = `
+        <a href="/"><img class="home-icon" src="/assets/images/home.svg" alt="home"></a>
+        <a href="${usbRoot}" class="crumb"><img class="path-next" src="/assets/images/next.svg">Explore</a>
+    `;
+    pathSteps = path.split('/');
+    let pathToHere = usbRoot;
+    pathSteps.forEach((step, index) => {
+        pathToHere += step + '/';
+        if (step !== "") {
+            breadcrumbHTML += `
+            <a href="${pathToHere}" class="crumb"><img class="path-next" src="/assets/images/next.svg">${step}</a>`;
+        }
+    });
+    breadcrumbs.innerHTML = breadcrumbHTML;
+    listDiv.parentNode.insertBefore(breadcrumbs, listDiv);
+
+    // hr
+    const fullWithHR = document.createElement('hr');
+    fullWithHR.classList.add('full-width');
+    listDiv.parentNode.insertBefore(fullWithHR, listDiv);
+
+    // Create a folder listing
     const folderListing = document.createElement("div");
     folderListing.classList.add('folder-list');
     folderListing.innerHTML = '<h2>Folders</h2>';
@@ -111,7 +142,6 @@ window.onload = function () {
     });
 
     // do the insertion
-    const listDiv = document.querySelector('div.list');
     listDiv.parentNode.insertBefore(folderListing, listDiv);
 
     if (folders.length > 0 && files.length > 0) {
diff --git a/simulated-usb-butter/johns_folder/index.html b/simulated-usb-butter/johns_folder/index.html
new file mode 100644
index 0000000..964eb50
--- /dev/null
+++ b/simulated-usb-butter/johns_folder/index.html
@@ -0,0 +1,225 @@
+---
+layout: empty
+---
+
+<!-- This simulates a drive being plugged in.  CI moves this into place as /usb-butter.  You can too. -->
+<!-- Mostly, this is a copy paste of the real dirlisting.  We modify the JS and CSS links to load ones from this repo. -->
+
+
+<!DOCTYPE html>
+<html>
+
+<head>
+    <title>Index of /usb-butter/johns_folder/</title>
+    <meta name="viewport" content="initial-scale=1">
+    <link rel="stylesheet" type="text/css" href="{{ site.baseurl }}/assets/css/butter-dir-listing.css">
+    <script src="{{ site.baseurl }}/assets/js/butter-dir-listing.js"></script>
+</head>
+<body>
+<h2>Index of /usb-butter/johns_folder/</h2>
+<div class="list">
+<table summary="Directory Listing" cellpadding="0" cellspacing="0">
+<thead><tr><th class="n">Name</th><th class="m">Last Modified</th><th class="s">Size</th><th class="t">Type</th></tr></thead>
+<tbody>
+<tr class="d"><td class="n"><a href="../">..</a>/</td><td class="m">&nbsp;</td><td class="s">- &nbsp;</td><td class="t">Directory</td></tr>
+<tr class="d"><td class="n"><a href="johns_subfolder1/">johns_subfolder1</a>/</td><td class="m">2024-Apr-30 17:11:52</td><td class="s">- &nbsp;</td><td class="t">Directory</td></tr>
+<tr class="d"><td class="n"><a href="johns_subfolder2/">johns_subfolder2</a>/</td><td class="m">2024-Apr-30 17:11:54</td><td class="s">- &nbsp;</td><td class="t">Directory</td></tr>
+<tr><td class="n"><a href="lub.zip">lub.zip</a></td><td class="m">2024-May-01 15:38:22</td><td class="s">30.3M</td><td class="t">application/zip</td></tr>
+<tr><td class="n"><a href="test.txt">test.txt</a></td><td class="m">2024-Mar-07 14:55:59</td><td class="s">0.0K</td><td class="t">text/plain;charset=utf-8</td></tr>
+</tbody>
+</table>
+</div>
+<div class="foot">lighttpd/1.4.69</div>
+
+<script type="text/javascript">
+// <!--
+
+var click_column;
+var name_column = 0;
+var date_column = 1;
+var size_column = 2;
+var type_column = 3;
+var prev_span = null;
+
+if (typeof(String.prototype.localeCompare) === 'undefined') {
+ String.prototype.localeCompare = function(str, locale, options) {
+   return ((this == str) ? 0 : ((this > str) ? 1 : -1));
+ };
+}
+
+if (typeof(String.prototype.toLocaleUpperCase) === 'undefined') {
+ String.prototype.toLocaleUpperCase = function() {
+  return this.toUpperCase();
+ };
+}
+
+function get_inner_text(el) {
+ if((typeof el == 'string')||(typeof el == 'undefined'))
+  return el;
+ if(el.innerText)
+  return el.innerText;
+ else {
+  var str = "";
+  var cs = el.childNodes;
+  var l = cs.length;
+  for (var i=0;i<l;i++) {
+   if (cs[i].nodeType==1) str += get_inner_text(cs[i]);
+   else if (cs[i].nodeType==3) str += cs[i].nodeValue;
+  }
+ }
+ return str;
+}
+
+function isdigit(c) {
+ return (c >= '0' && c <= '9');
+}
+
+function unit_multiplier(unit) {
+ return (unit=='K') ? 1000
+      : (unit=='M') ? 1000000
+      : (unit=='G') ? 1000000000
+      : (unit=='T') ? 1000000000000
+      : (unit=='P') ? 1000000000000000
+      : (unit=='E') ? 1000000000000000000 : 1;
+}
+
+var li_date_regex=/(\d{4})-(\w{3})-(\d{2}) (\d{2}):(\d{2}):(\d{2})/;
+
+var li_mon = ['Jan','Feb','Mar','Apr','May','Jun',
+              'Jul','Aug','Sep','Oct','Nov','Dec'];
+
+function li_mon_num(mon) {
+ var i; for (i = 0; i < 12 && mon != li_mon[i]; ++i); return i;
+}
+
+function li_date_cmp(s1, s2) {
+ var dp1 = li_date_regex.exec(s1)
+ var dp2 = li_date_regex.exec(s2)
+ for (var i = 1; i < 7; ++i) {
+  var cmp = (2 != i)
+   ? parseInt(dp1[i]) - parseInt(dp2[i])
+   : li_mon_num(dp1[2]) - li_mon_num(dp2[2]);
+  if (0 != cmp) return cmp;
+ }
+ return 0;
+}
+
+function sortfn_then_by_name(a,b,sort_column) {
+ if (sort_column == name_column || sort_column == type_column) {
+  var ad = (a.cells[type_column].innerHTML === 'Directory');
+  var bd = (b.cells[type_column].innerHTML === 'Directory');
+  if (ad != bd) return (ad ? -1 : 1);
+ }
+ var at = get_inner_text(a.cells[sort_column]);
+ var bt = get_inner_text(b.cells[sort_column]);
+ var cmp;
+ if (sort_column == name_column) {
+  if (at == '../') return -1;
+  if (bt == '../') return  1;
+ }
+ if (a.cells[sort_column].className == 'int') {
+  cmp = parseInt(at)-parseInt(bt);
+ } else if (sort_column == date_column) {
+  var ad = isdigit(at.substr(0,1));
+  var bd = isdigit(bt.substr(0,1));
+  if (ad != bd) return (!ad ? -1 : 1);
+  cmp = li_date_cmp(at,bt);
+ } else if (sort_column == size_column) {
+  var ai = parseInt(at, 10) * unit_multiplier(at.substr(-1,1));
+  var bi = parseInt(bt, 10) * unit_multiplier(bt.substr(-1,1));
+  if (at.substr(0,1) == '-') ai = -1;
+  if (bt.substr(0,1) == '-') bi = -1;
+  cmp = ai - bi;
+ } else {
+  cmp = at.toLocaleUpperCase().localeCompare(bt.toLocaleUpperCase());
+  if (0 != cmp) return cmp;
+  cmp = at.localeCompare(bt);
+ }
+ if (0 != cmp || sort_column == name_column) return cmp;
+ return sortfn_then_by_name(a,b,name_column);
+}
+
+function sortfn(a,b) {
+ return sortfn_then_by_name(a,b,click_column);
+}
+
+function resort(lnk) {
+ var span = lnk.childNodes[1];
+ var table = lnk.parentNode.parentNode.parentNode.parentNode;
+ var rows = new Array();
+ for (var j=1;j<table.rows.length;j++)
+  rows[j-1] = table.rows[j];
+ click_column = lnk.parentNode.cellIndex;
+ rows.sort(sortfn);
+
+ if (prev_span != null) prev_span.innerHTML = '';
+ if (span.getAttribute('sortdir')=='down') {
+  span.innerHTML = '&uarr;';
+  span.setAttribute('sortdir','up');
+  rows.reverse();
+ } else {
+  span.innerHTML = '&darr;';
+  span.setAttribute('sortdir','down');
+ }
+ for (var i=0;i<rows.length;i++)
+  table.tBodies[0].appendChild(rows[i]);
+ prev_span = span;
+}
+
+function init_sort(init_sort_column, ascending) {
+ var tables = document.getElementsByTagName("table");
+ for (var i = 0; i < tables.length; i++) {
+  var table = tables[i];
+  //var c = table.getAttribute("class")
+  //if (-1 != c.split(" ").indexOf("sort")) {
+   var row = table.rows[0].cells;
+   for (var j = 0; j < row.length; j++) {
+    var n = row[j];
+    if (n.childNodes.length == 1 && n.childNodes[0].nodeType == 3) {
+     var link = document.createElement("a");
+     var title = n.childNodes[0].nodeValue.replace(/:$/, "");
+     link.appendChild(document.createTextNode(title));
+     link.setAttribute("href", "#");
+     link.setAttribute("class", "sortheader");
+     link.setAttribute("onclick", "resort(this);return false;");
+     var arrow = document.createElement("span");
+     arrow.setAttribute("class", "sortarrow");
+     arrow.appendChild(document.createTextNode(":"));
+     link.appendChild(arrow)
+     n.replaceChild(link, n.firstChild);
+    }
+   }
+   var lnk = row[init_sort_column].firstChild;
+   if (ascending) {
+    var span = lnk.childNodes[1];
+    span.setAttribute('sortdir','down');
+   }
+   resort(lnk);
+  //}
+ }
+}
+
+function init_sort_from_query() {
+  var urlParams = new URLSearchParams(location.search);
+  var c = 0;
+  var o = 0;
+  switch (urlParams.get('C')) {
+    case "N": c=0; break;
+    case "M": c=1; break;
+    case "S": c=2; break;
+    case "T":
+    case "D": c=3; break;
+  }
+  switch (urlParams.get('O')) {
+    case "A": o=1; break;
+    case "D": o=0; break;
+  }
+  init_sort(c,o);
+}
+init_sort_from_query();
+
+// -->
+</script>
+
+</body>
+</html>
\ No newline at end of file