fix mixing Arabic with English.

Signed-off-by: Anas Altair <anastr244@gmail.com>

 # Changelog
 
+## 1.10.2
+
+- Fix mixing Arabic with English [Anas Altair]
+- Support Dagger alif in Arabic [Anas Altair]
 
 ## 1.10.1
 

@@ -25,8 +25,6 @@ class PdfArabic {
   /// Arabic shape substitutions: char code => (isolated, final, initial, medial).
   /// Arabic Substition A
   static const Map<int, dynamic> _arabicSubstitionA = <int, dynamic>{
-//    0x0652: <int>[0xFE7E, 0xFE7F],
-
     0x0621: <int>[0xFE80], // ARABIC LETTER HAMZA
     0x0622: <int>[0xFE81, 0xFE82], // ARABIC LETTER ALEF WITH MADDA ABOVE
     0x0623: <int>[0xFE83, 0xFE84], // ARABIC LETTER ALEF WITH HAMZA ABOVE
@@ -128,6 +126,7 @@ class PdfArabic {
       0x064E: 0xFC60, // Shadda + Fatha
       0x064F: 0xFC61, // Shadda + Damma
       0x0650: 0xFC62, // Shadda + Kasra
+      0x0670: 0xFC63, // Shadda + Dagger alif
     },
   };
 
@@ -160,20 +159,23 @@ class PdfArabic {
   static const List<int> _alfletter = <int>[1570, 1571, 1573, 1575];
 
   static const Map<int, int> _arabicDiacritics = <int, int>{
-    1611: 1611, // Fathatan
-    1612: 1612, // Dammatan
-    1613: 1613, // Kasratan
-    1614: 1614, // Fatha
-    1615: 1615, // Damma
-    1616: 1616, // Kasra
-    1617: 1617,
-    1618: 1618,
-
-    64606: 64606, // Shadda + Dammatan
-    64607: 64607, // Shadda + Kasratan
-    64608: 64608, // Shadda + Fatha
-    64609: 64609, // Shadda + Damma
-    64610: 64610, // Shadda + Kasra
+    0x064B: 0x064B, // Fathatan
+    0x064C: 0x064C, // Dammatan
+    0x064D: 0x064D, // Kasratan
+    0x064E: 0x064E, // Fatha
+    0x064F: 0x064F, // Damma
+    0x0650: 0x0650, // Kasra
+    0x0651: 0x0651, // Shadda
+    0x0652: 0x0652, // Sukun
+
+    0x0670: 0x0670, // Dagger alif
+
+    0xFC5E: 0xFC5E, // Shadda + Dammatan
+    0xFC5F: 0xFC5F, // Shadda + Kasratan
+    0xFC60: 0xFC60, // Shadda + Fatha
+    0xFC61: 0xFC61, // Shadda + Damma
+    0xFC62: 0xFC62, // Shadda + Kasra
+    0xFC63: 0xFC63, // Shadda + Dagger alif
     // 1548: 1548,
   };
 
@@ -324,10 +326,12 @@ class PdfArabic {
   static Iterable<String> _parse(String text) sync* {
     final List<String> words = text.split(' ');
 
+    final List<List<int>> notArabicWords = <List<int>>[];
+
     bool first = true;
     for (String word in words) {
       final List<int> newWord = <int>[];
-      bool isArabic = false;
+      bool isNewWordArabic = false;
 
       int prevLetter = 0;
 
@@ -348,31 +352,48 @@ class PdfArabic {
             );
 
         if (_isArabicLetter(currentLetter)) {
-          isArabic = true;
+          isNewWordArabic = true;
 
           final int position =
               _getCorrectForm(currentLetter, prevLetter, nextLetter);
+          prevLetter = currentLetter;
           if (position != -1) {
             newWord.insert(0, _arabicSubstitionA[currentLetter][position]);
           } else {
             newWord.add(currentLetter);
           }
         } else {
-          if (isArabic && currentLetter > 32) {
+          prevLetter = 0;
+          if (isNewWordArabic && currentLetter > 32) {
             newWord.insert(0, currentLetter);
           } else {
             newWord.add(currentLetter);
           }
         }
-        prevLetter = currentLetter;
       }
 
-      if (!first) {
+      if (!first && isNewWordArabic) {
         yield ' ';
       }
       first = false;
 
-      yield String.fromCharCodes(_resolveLigatures(newWord));
+      if (isNewWordArabic) {
+        isNewWordArabic = false;
+        for (List<int> notArabicNewWord in notArabicWords) {
+          yield '${String.fromCharCodes(notArabicNewWord)} ';
+        }
+        notArabicWords.clear();
+        yield String.fromCharCodes(_resolveLigatures(newWord));
+      } else {
+        notArabicWords.insert(0, newWord);
+      }
+    }
+    // if notArabicWords.length != 0, that means all sentence doesn't contain Arabic.
+    for (int i = 0; i < notArabicWords.length; i++) {
+      yield String.fromCharCodes(notArabicWords[i]);
+      if (i != notArabicWords.length - 1) {
+        yield ' ';
+      }
     }
   }
 

@@ -4,7 +4,7 @@ description: A pdf producer for Dart. It can create pdf files for both web or fl
 homepage: https://github.com/DavBfr/dart_pdf/tree/master/pdf
 repository: https://github.com/DavBfr/dart_pdf
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
-version: 1.10.1
+version: 1.10.2
 
 environment:
   sdk: ">=2.3.0 <3.0.0"