From fb351c3a1736e83091054493b28da241234c6af3 Mon Sep 17 00:00:00 2001
From: Pierre Hennequart <pierre@janalis.com>
Date: Tue, 22 Nov 2016 13:21:55 +0100
Subject: [PATCH] Add markdown format

---
 src/background.js |  3 +++
 src/content.js    | 37 +++++++++++++++++++++++++++++++++++++
 src/popup.html    |  1 +
 3 files changed, 41 insertions(+)

diff --git a/src/background.js b/src/background.js
index 067208f..73d91f5 100644
--- a/src/background.js
+++ b/src/background.js
@@ -14,6 +14,7 @@ menu.copy          = chrome.contextMenus.create({ "title": "Copy as...",    "par
 menu.copyHTML      = chrome.contextMenus.create({ "title": "HTML",          "parentId": menu.copy, "enabled": false, "contexts": ctx, "onclick": function() { menuClick("copyHTML")     }});
 menu.copyStyled    = chrome.contextMenus.create({ "title": "Styled HTML",   "parentId": menu.copy, "enabled": false, "contexts": ctx, "onclick": function() { menuClick("copyStyled")  }});
 menu.copyCSV       = chrome.contextMenus.create({ "title": "CSV",           "parentId": menu.copy, "enabled": false, "contexts": ctx, "onclick": function() { menuClick("copyCSV")      }});
+menu.copyMarkdown  = chrome.contextMenus.create({ "title": "Markdown",      "parentId": menu.copy, "enabled": false, "contexts": ctx, "onclick": function() { menuClick("copyMarkdown") }});
 menu.copyText      = chrome.contextMenus.create({ "title": "Text-Only",     "parentId": menu.copy, "enabled": false, "contexts": ctx, "onclick": function() { menuClick("copyText")     }});
 
 // Send a command to tabs.
@@ -44,6 +45,7 @@ chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) {
         case "copyHTML":
         case "copyStyled":
         case "copyCSV":
+        case "copyMarkdown":
             var t = document.getElementById("___copytables_clipboard___");
             t.value = message.content;
             t.focus();
@@ -85,6 +87,7 @@ chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) {
             chrome.contextMenus.update(menu.copyHTML,       {enabled:s.canCopy});
             chrome.contextMenus.update(menu.copyStyled,     {enabled:s.canCopy});
             chrome.contextMenus.update(menu.copyCSV,        {enabled:s.canCopy});
+            chrome.contextMenus.update(menu.copyMarkdown,   {enabled:s.canCopy});
             chrome.contextMenus.update(menu.copyText,       {enabled:s.canCopy});
 
             sendResponse({});
diff --git a/src/content.js b/src/content.js
index edf87dc..b1ac920 100644
--- a/src/content.js
+++ b/src/content.js
@@ -342,6 +342,37 @@
         });
     };
 
+    // Return selected cells (`all=false`) or the whole table (`all=true') as markdown matrix.
+    var selectedMarkdownMatrix = function(table, all) {
+        var useSeparator = false,
+            headerSeparator = [];
+        var m = tableMatrix(table).map(function(row, rowIndex) {
+            return row.map(function(cell, cellIndex) {
+                if (cell.td && (all || isSelected(cell.td))) {
+                    var text = strip(cell.td.innerText.replace(/[\r\n]+/g, " "));
+                    if (0 === rowIndex && "TH" === cell.td.tagName)
+                        useSeparator = true;
+                    if (!headerSeparator[cellIndex] || headerSeparator[cellIndex].length < text.length)
+                        headerSeparator[cellIndex] = "-".repeat(text.length);
+                    return text;
+                }
+                return "";
+            });
+        });
+        if(useSeparator)
+            m.splice(1, 0, headerSeparator);
+
+        return trimMatrix(m, function(cell) {
+            return cell.length > 0;
+        }).map(function(row) {
+            return row.map(function(cell, cellIndex) {
+                if(headerSeparator[cellIndex] && headerSeparator[cellIndex].length > cell.length)
+                    cell = cell + " ".repeat(headerSeparator[cellIndex].length - cell.length);
+                return cell;
+            });
+        });
+    };
+
     // Return selected cells (`all=false`) or the whole table (`all=true') as text-only matrix.
     var selectedTextMatrix = function(table, all) {
         var m = tableMatrix(table).map(function(row) {
@@ -728,6 +759,11 @@
                 return m.map(function(row) {
                     return rstrip(row.join("\t"));
                 }).join("\n");
+            case "copyMarkdown":
+                var m = selectedMarkdownMatrix(selection.table, !anySelected);
+                return m.map(function(row) {
+                    return rstrip(row.join(" | "));
+                }).join("\n");
             case "copyCSV":
                 var m = selectedTextMatrix(selection.table, !anySelected);
                 return m.map(function(row) {
@@ -816,6 +852,7 @@
             case "copyText":
             case "copyHTML":
             case "copyStyled":
+            case "copyMarkdown":
             case "copyCSV":
                 if(selection)
                     doCopy(message.command);
diff --git a/src/popup.html b/src/popup.html
index 929f020..7a313d4 100755
--- a/src/popup.html
+++ b/src/popup.html
@@ -12,6 +12,7 @@
         <a data-command="copyHTML">HTML</a>
         <a data-command="copyStyled">Styled</a>
         <a data-command="copyCSV">CSV</a>
+        <a data-command="copyMarkdown">Markdown</a>
         <a data-command="copyText">Text</a>
     </p>
     <p id="mFind">