Moved string helpers to utilities

lib/common/utils.js

@@ -1,10 +1,11 @@
 // Utilities
-'use strics';
+//
+'use strict';
 
 
 // Merge objects
 //
-exports.assign = function (obj /*from1, from2, from3, ...*/) {
+function assign(obj /*from1, from2, from3, ...*/) {
   var sources = Array.prototype.slice.call(arguments, 1);
   while (sources.length) {
     var source = sources.shift();
@@ -22,4 +23,71 @@ exports.assign = function (obj /*from1, from2, from3, ...*/) {
   }
 
   return obj;
-};
+}
+
+
+function escapeHtml(str) {
+  if (str.indexOf('&') >= 0) { str = str.replace(/&/g, '&'); }
+  if (str.indexOf('<') >= 0) { str = str.replace(/</g, '&lt;'); }
+  if (str.indexOf('>') >= 0) { str = str.replace(/>/g, '&gt;'); }
+  if (str.indexOf('"') >= 0) { str = str.replace(/"/g, '&quot;'); }
+  return str;
+}
+
+var UNESCAPE_MD_RE = /\\([\\!"#$%&'()*+,.\/:;<=>?@[\]^_`{|}~-])/g;
+
+function unescapeMd(str) {
+  if (str.indexOf('\\') < 0) { return str; }
+  return str.replace(UNESCAPE_MD_RE, '$1');
+}
+
+function isValidEntityCode(c) {
+  /*eslint no-bitwise:0*/
+  // broken sequence
+  if (c >= 0xD800 && c <= 0xDFFF) { return false; }
+  if (c >= 0xF5 && c <= 0xFF) { return false; }
+  if (c === 0xC0 || c === 0xC1) { return false; }
+  // never used
+  if (c >= 0xFDD0 && c <= 0xFDEF) { return false; }
+  if ((c & 0xFFFF) === 0xFFFF || (c & 0xFFFF) === 0xFFFE) { return false; }
+  // control codes
+  if (c <= 0x1F) { return false; }
+  if (c >= 0x7F && c <= 0x9F) { return false; }
+  // out of range
+  if (c > 0x10FFFF) { return false; }
+  return true;
+}
+
+function fromCodePoint(c) {
+  /*eslint no-bitwise:0*/
+  if (c > 0xffff) {
+    c -= 0x10000;
+    var surrogate1 = 0xd800 + (c >> 10),
+        surrogate2 = 0xdc00 + (c & 0x3ff);
+
+    return String.fromCharCode(surrogate1, surrogate2);
+  }
+  return String.fromCharCode(c);
+}
+
+var NAMED_ENTITY_RE   = /&([a-z][a-z0-9]{1,31});/gi;
+var entities = require('./entities');
+
+function replaceEntities(str) {
+  if (str.indexOf('&') < 0) { return str; }
+
+  return str.replace(NAMED_ENTITY_RE, function(match, name) {
+    if (entities.hasOwnProperty(name)) {
+      return entities[name];
+    }
+    return match;
+  });
+}
+
+
+exports.assign = assign;
+exports.escapeHtml = escapeHtml;
+exports.unescapeMd = unescapeMd;
+exports.isValidEntityCode = isValidEntityCode;
+exports.fromCodePoint = fromCodePoint;
+exports.replaceEntities = replaceEntities;

lib/helpers.js

@@ -3,10 +3,6 @@
 'use strict';
 
 
-function isWhiteSpace(ch) {
-  return ch === 0x20;
-}
-
 // Check if line has zero length or contains spaces only
 function isEmpty(state, line) {
   return state.bMarks[line] + state.tShift[line] >= state.eMarks[line];
@@ -25,7 +21,7 @@ function skipEmptyLines(state, from) {
 // Skip spaces from given position.
 function skipSpaces(state, pos) {
   for (var max = state.src.length; pos < max; pos++) {
-    if (!isWhiteSpace(state.src.charCodeAt(pos))) { break; }
+    if (state.src.charCodeAt(pos) !== 0x20/* space */) { break; }
   }
   return pos;
 }
@@ -83,73 +79,9 @@ function getLines(state, begin, end, indent, keepLastLF) {
 }
 
 
-function escapeHtml(str) {
-  if (str.indexOf('&') >= 0) { str = str.replace(/&/g, '&amp;'); }
-  if (str.indexOf('<') >= 0) { str = str.replace(/</g, '&lt;'); }
-  if (str.indexOf('>') >= 0) { str = str.replace(/>/g, '&gt;'); }
-  if (str.indexOf('"') >= 0) { str = str.replace(/"/g, '&quot;'); }
-  return str;
-}
-
-var UNESCAPE_MD_RE = /\\([\\!"#$%&'()*+,.\/:;<=>?@[\]^_`{|}~-])/g;
-
-function unescapeMd(str) {
-  if (str.indexOf('\\') < 0) { return str; }
-  return str.replace(UNESCAPE_MD_RE, '$1');
-}
-
-function isValidEntityCode(c) {
-  /*eslint no-bitwise:0*/
-  // broken sequence
-  if (c >= 0xD800 && c <= 0xDFFF) { return false; }
-  if (c >= 0xF5 && c <= 0xFF) { return false; }
-  if (c === 0xC0 || c === 0xC1) { return false; }
-  // never used
-  if (c >= 0xFDD0 && c <= 0xFDEF) { return false; }
-  if ((c & 0xFFFF) === 0xFFFF || (c & 0xFFFF) === 0xFFFE) { return false; }
-  // control codes
-  if (c <= 0x1F) { return false; }
-  if (c >= 0x7F && c <= 0x9F) { return false; }
-  // out of range
-  if (c > 0x10FFFF) { return false; }
-  return true;
-}
-
-function fromCodePoint(c) {
-  /*eslint no-bitwise:0*/
-  if (c > 0xffff) {
-    c -= 0x10000;
-    var surrogate1 = 0xd800 + (c >> 10),
-        surrogate2 = 0xdc00 + (c & 0x3ff);
-
-    return String.fromCharCode(surrogate1, surrogate2);
-  }
-  return String.fromCharCode(c);
-}
-
-var NAMED_ENTITY_RE   = /&([a-z][a-z0-9]{1,31});/gi;
-var entities = require('./common/entities');
-
-function replaceEntities(str) {
-  if (str.indexOf('&') < 0) { return str; }
-
-  return str.replace(NAMED_ENTITY_RE, function(match, name) {
-    if (entities.hasOwnProperty(name)) {
-      return entities[name];
-    }
-    return match;
-  });
-}
-
-exports.isWhiteSpace = isWhiteSpace;
 exports.isEmpty = isEmpty;
 exports.skipEmptyLines = skipEmptyLines;
 exports.skipSpaces = skipSpaces;
 exports.skipChars = skipChars;
 exports.getLines = getLines;
 exports.skipCharsBack = skipCharsBack;
-exports.escapeHtml = escapeHtml;
-exports.unescapeMd = unescapeMd;
-exports.isValidEntityCode = isValidEntityCode;
-exports.fromCodePoint = fromCodePoint;
-exports.replaceEntities = replaceEntities;

lib/renderer.js

@@ -2,9 +2,9 @@
 
 
 var assign          = require('./common/utils').assign;
-var escapeHtml      = require('./helpers').escapeHtml;
-var unescapeMd      = require('./helpers').unescapeMd;
-var replaceEntities = require('./helpers').replaceEntities;
+var escapeHtml      = require('./common/utils').escapeHtml;
+var unescapeMd      = require('./common/utils').unescapeMd;
+var replaceEntities = require('./common/utils').replaceEntities;
 
 
 function escapeUrl(str) {

lib/rules_block/heading.js

@@ -3,7 +3,6 @@
 'use strict';
 
 
-var isWhiteSpace    = require('../helpers').isWhiteSpace;
 var skipSpaces      = require('../helpers').skipSpaces;
 var skipCharsBack   = require('../helpers').skipCharsBack;
 
@@ -27,7 +26,7 @@ module.exports = function heading(state, startLine, endLine, silent) {
     ch = state.src.charCodeAt(++pos);
   }
 
-  if (level > 6 || (pos < max && !isWhiteSpace(ch))) { return false; }
+  if (level > 6 || (pos < max && ch !== 0x20/* space */)) { return false; }
 
   // skip spaces before heading text
   pos = skipSpaces(state, pos);

lib/rules_block/hr.js

@@ -3,9 +3,6 @@
 'use strict';
 
 
-var isWhiteSpace    = require('../helpers').isWhiteSpace;
-
-
 module.exports = function hr(state, startLine, endLine, silent) {
   var marker, cnt, ch,
       pos = state.bMarks[startLine],
@@ -29,7 +26,7 @@ module.exports = function hr(state, startLine, endLine, silent) {
   cnt = 1;
   while (pos < max) {
     ch = state.src.charCodeAt(pos++);
-    if (ch !== marker && !isWhiteSpace(ch)) { return false; }
+    if (ch !== marker && ch !== 0x20/* space */) { return false; }
     if (ch === marker) { cnt++; }
   }
 

lib/rules_inline/autolink.js

@@ -1,7 +1,7 @@
 // Process autolinks '<protocol:...>'
 
 
-var escapeHtml  = require('../helpers').escapeHtml;
+var escapeHtml  = require('../common/utils').escapeHtml;
 var url_schemas = require('../common/url_schemas');
 
 

lib/rules_inline/entity.js

@@ -3,9 +3,9 @@
 'use strict';
 
 var entities          = require('../common/entities');
-var escapeHtml        = require('../helpers').escapeHtml;
-var isValidEntityCode = require('../helpers').isValidEntityCode;
-var fromCodePoint     = require('../helpers').fromCodePoint;
+var escapeHtml        = require('../common/utils').escapeHtml;
+var isValidEntityCode = require('../common/utils').isValidEntityCode;
+var fromCodePoint     = require('../common/utils').fromCodePoint;
 
 
 var DIGITAL_RE = /^&#((?:x[a-f0-9]{1,8}|[0-9]{1,8}));/i;

lib/rules_typographer/linkify.js

@@ -6,7 +6,7 @@
 
 
 var Autolinker = require('autolinker');
-var escapeHtml = require('../helpers').escapeHtml;
+var escapeHtml = require('../common/utils').escapeHtml;
 
 
 var links = [];