Merge updates from Guru

.gitignore

@@ -25,3 +25,6 @@ build/Release
 # Dependency directory
 # https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
 node_modules
+
+# Package
+package-lock.json

README.md

@@ -7,5 +7,8 @@ example usage:
 var slackify = require('slackify-html');
 
 var text = slackify('this <a href="http://github.com">link</a> is <b>important</b>');
-// text variable contains 'this <http://github.com|link> is *important*' 
+// text variable contains 'this <http://github.com|link> is *important*'
 ```
+
+### How to setup repo and test locally
+https://app.getguru.com/card/TqGjya8c/slackifyhtml-basic-setup

package.json

@@ -29,6 +29,6 @@
     "htmlparser": "^1.7.7"
   },
   "devDependencies": {
-    "tap": "^1.4.0"
+    "tap": "^14.10.7"
   }
 }

slackify-html.js

@@ -14,27 +14,268 @@ module.exports = function slackify(html) {
     return entities.decode(walk(dom));
   else
     return '';
+};
+
+function walkList(dom, ordered, nesting, start) {
+  var out = '';
+  if (dom) {
+    var listItemIndex = start ? start : 1;
+    dom.forEach(function (el) {
+      if ('text' === el.type && el.data.trim() !== '') {
+        out += el.data;
+      }
+      else if ('tag' === el.type) {
+        switch (el.name) {
+          case 'li':
+            for (i=0; i < nesting * 2; i++) {
+              out += ' ';
+            }
+            out += (ordered ? listItemIndex++ + '. ' : "• ") + walk(el.children, nesting + 1) + '\n';
+            break;
+          default:
+            out += walk(el.children, nesting + 1);
+        }
+      }
+    });
+  }
+  return out;
 }
 
-function walk(dom) {
+function walkPre(dom) {
   var out = '';
-  if (dom)
+  if (dom) {
     dom.forEach(function (el) {
       if ('text' === el.type) {
         out += el.data;
       }
+      else if ('tag' === el.type) {
+        out += walkPre(el.children) + '\n';
+      }
+    });
+  }
+  return out;
+}
+
+function walkTable(dom) {
+  var out = '';
+  if (dom) {
+    dom.forEach(function (el) {
       if ('tag' === el.type) {
+        if ('thead' === el.name) {
+          out += walkTableHead(el.children);
+        }
+        else if ('tbody' === el.name) {
+          out += walkTableBody(el.children);
+        }
+      }
+    });
+  }
+
+  return out;
+}
+
+function walkTableHead(dom) {
+  var out = '';
+  if (dom) {
+    var headers = [];
+    dom.forEach(function (el) {
+      if ('text' === el.type && el.data.trim() !== '') {
+        out += el.data;
+      }
+      else if ('tr' === el.name) {
+        out += walkTableHead(el.children);
+      }
+      else if ('th' === el.name) {
+        var header = walkTableHead(el.children);
+        headers.push(header);
+        out += '| ' + header + ' ';
+      }
+    });
+    if (headers.length > 0) {
+      out += ' |\n';
+      headers.forEach(function (item) {
+        out += '| ';
+        for (i = 0; i < item.length; i++) {
+          out += '-';
+        }
+        out += ' ';
+      });
+      out += ' |\n';
+    }
+  }
+
+  return out;
+}
+
+function walkTableBody(dom) {
+  var out = '';
+  if (dom) {
+    dom.forEach(function (el) {
+      if ('text' === el.type && el.data.trim() !== '') {
+        out += el.data;
+      }
+      else if ('td' === el.name) {
+        out += '| ' + walk(el.children) + ' ';
+      }
+      else if ('tr' === el.name) {
+        out += walkTableBody(el.children) + '|\n';
+      }
+    });
+  }
+  return out;
+}
+
+function walk(dom, nesting) {
+  if (!nesting) {
+    nesting = 0;
+  }
+  var out = '';
+  if (dom)
+    dom.forEach(function (el) {
+      if ('text' === el.type) {
+        out += el.data;
+      }
+      else if ('tag' === el.type) {
         switch (el.name) {
           case 'a':
-            out += '<' + el.attribs.href + '|' + walk(el.children) + '>';
+            if (el.attribs && el.attribs.href) {
+              out += '<' + el.attribs.href + '|' + walk(el.children) + '>';
+            }
+            else {
+              out += walk(el.children);
+            }
             break;
+          case 'h1':
+          case 'h2':
+          case 'h3':
+          case 'h4':
           case 'strong':
           case 'b':
-            out += '*' + walk(el.children) + '*';
+            content = walk(el.children);
+            var contentArr = content.split('\n');
+            var innerOutput = '';
+            for (var i=0; i<contentArr.length; i++) {
+              content = contentArr[i];
+              if (content.trim() !== '') {
+                var prefixSpace = false;
+                var suffixSpace = false;
+                if (content && content.charAt(0) === ' ') {
+                  content = content.substr(1, content.length);
+                  prefixSpace = true;
+                }
+                if (content && content.charAt(content.length - 1) === ' ') {
+                  content = content.substr(0, content.length - 1);
+                  suffixSpace = true;
+                }
+                if (prefixSpace) {
+                  innerOutput += ' ';
+                }
+                if (el.name === 'h1' || el.name === 'h2' || el.name === 'h3' || el.name === 'h4') {
+                  content = content.replace(/\*/g, '');
+                  innerOutput += '*' + content + '*';
+                }
+                else if (content.charAt(0) === '*' && content.charAt(content.length - 1) === '*') {
+                  innerOutput += content;
+                }
+                else {
+                  innerOutput += '*' + content + '*';
+                }
+                if (suffixSpace) {
+                  innerOutput += ' ';
+                }
+              }
+              if (i < contentArr.length - 1) {
+                innerOutput += '\n';
+              }
+            }
+            out += innerOutput;
+
+            switch (el.name) {
+              case 'h1':
+              case 'h2':
+              case 'h3':
+              case 'h4':
+                out += '\n';
+                break;
+            }
             break;
           case 'i':
           case 'em':
-            out += '_' + walk(el.children) + '_';
+            content = walk(el.children);
+            var contentArr = content.split('\n');
+            var innerOutput = '';
+            for (var i=0; i<contentArr.length; i++) {
+              content = contentArr[i];
+              if (content.trim() !== '') {
+                var prefixSpace = false;
+                var suffixSpace = false;
+                if (content && content.charAt(0) === ' ') {
+                  content = content.substr(1, content.length);
+                  prefixSpace = true;
+                }
+                if (content && content.charAt(content.length - 1) === ' ') {
+                  content = content.substr(0, content.length - 1);
+                  suffixSpace = true;
+                }
+                if (prefixSpace) {
+                  innerOutput += ' ';
+                }
+                innerOutput += '_' + content + '_';
+                if (suffixSpace) {
+                  innerOutput += ' ';
+                }
+                out += innerOutput;
+              }
+              if (i < contentArr.length - 1) {
+                out += '\n';
+              }
+            }
+            break;
+          case 'div':
+            out += walk(el.children);
+            if (el.attribs && el.attribs.class === 'ghq-card-content__paragraph') {
+              out += '\n';
+            }
+            break;
+          case 'p':
+            out += walk(el.children) + '\n';
+            break;
+          case 'br':
+            out += walk(el.children) + '\n';
+            break;
+          case 'ol':
+          case 'ul':
+            var startIndex = (el.attribs) ? el.attribs.start : false;
+            out += walkList(el.children, 'ol' === el.name, nesting, startIndex);
+            break;
+          case 'code':
+            out += '`' + walk(el.children) + '`';
+            break;
+          case 'pre':
+            out += '```\n' + walkPre(el.children) + '```\n';
+            break;
+          case 'table':
+            out += walkTable(el.children);
+            break;
+          case 'img':
+            var alt = el.attribs.alt;
+            out += '<Inline Image' + (alt !== '' ? '('+alt+')' : '') + ': ' + el.attribs.src + '>';
+            break;
+          case 'blockquote':
+            content = walk(el.children);
+            var innerOutput = '';
+            var contentArr = content.split('\n');
+            contentArr.forEach((item) => {
+              if (el.name === 'br' || el.name === 'p') {
+                innerOutput += '>' + item;
+              } else {
+                innerOutput += '>' + item + '\n';
+              }
+            });
+            if (innerOutput.endsWith('\n>\n')) {
+              innerOutput = innerOutput.substr(0, innerOutput.length - 2);
+            }
+            out += innerOutput + '\n';
             break;
           default:
             out += walk(el.children);

tester.js

@@ -0,0 +1,8 @@
+var slackify = require('./slackify-html');
+var fs = require('fs');
+fs.readFile('/Users/petermichel/Desktop/delme.html', 'utf8', function (err,data) {
+  if (err) {
+    return console.log(err);
+  }
+  console.log(slackify(data));
+});