Added md046 sentences-per-line

lib/md046.js

@@ -0,0 +1,40 @@
+// @ts-check
+
+"use strict";
+
+const shared = require("./shared");
+
+const isAlphabetCharacter = (char) => {
+  const charCode = char.charCodeAt(0);
+
+  return charCode >= "A".charCodeAt(0) && charCode <= "Z".charCodeAt(0);
+};
+
+module.exports = {
+  "names": [ "MD046", "sentences-per-line" ],
+  "description": "Each sentence should be on its own line",
+  "tags": [ "sentences" ],
+  "function": function MD046(params, onError) {
+    let inFence = false;
+    shared.forEachLine(function forLine(line, lineIndex) {
+      if (line.substring(0, 3) === "```") {
+        inFence = !inFence;
+        return;
+      }
+
+      if (inFence) {
+        return;
+      }
+
+      for (let i = 0; i < line.length - 2; i += 1) {
+        if (line[i] === "`" && (i === 0 || line[i - 1] === "\\")) {
+          i = line.indexOf("`", i);
+        }
+
+        if (line[i] === "." && line[i + 1] === " " && isAlphabetCharacter(line[i + 2])) {
+          shared.addError(onError, lineIndex, null, line.substr(i, 2));
+        }
+      }
+    });
+  }
+};