Support single quotes in table name

Fixes #36

CHANGELOG.md

@@ -1,5 +1,9 @@
 # toml4j Changelog
 
+## 0.7.1 / 2016-07-27
+
+* [Support literal strings in table names](https://github.com/mwanji/toml4j/issues/36) (thanks to __[bruno-medeiros](https://github.com/bruno-medeiros)__)
+
 ## 0.7.0 / 2016-07-12
 
 ## Added

src/main/java/com/moandjiezana/toml/Identifier.java

@@ -139,7 +139,7 @@ class Identifier {
         break;
       }
       
-      if (c == '"') {
+      if (Keys.isQuote(c)) {
         if (!quoteAllowed) {
           valid = false;
         } else if (quoted && trimmed.charAt(i - 1) != '\\') {

src/main/java/com/moandjiezana/toml/IdentifierConverter.java

@@ -16,9 +16,9 @@ class IdentifierConverter {
     
     for (int i = index.get(); i < s.length(); i = index.incrementAndGet()) {
       char c = s.charAt(i);
-      if (c == '"' && (i == 0 || s.charAt(i - 1) != '\\')) {
+      if (Keys.isQuote(c) && (i == 0 || s.charAt(i - 1) != '\\')) {
         quoted = !quoted;
-        name.append('"');
+        name.append(c);
       } else if (c == '\n') {
         index.decrementAndGet();
         break;

src/main/java/com/moandjiezana/toml/Keys.java

@@ -42,7 +42,7 @@ class Keys {
         current = new StringBuilder();
         continue;
       }
-      if (c == '"' && (i == 0 || key.charAt(i - 1) != '\\')) {
+      if (isQuote(c) && (i == 0 || key.charAt(i - 1) != '\\')) {
         quoted = !quoted;
         indexable = false;
       }
@@ -60,6 +60,10 @@ class Keys {
     
     return splitKey.toArray(new Key[0]);
   }
+  
+  static boolean isQuote(char c) {
+    return c == '"' || c == '\'';
+  }
 
   private Keys() {}
 }

src/test/java/com/moandjiezana/toml/TableTest.java

@@ -63,6 +63,34 @@ public class TableTest {
   public void should_return_null_for_missing_table() throws Exception {
     assertNull(new Toml().getTable("a"));
   }
+
+  @Test
+  public void should_accept_table_name_with_basic_string() {
+    Toml toml = new Toml().read("[\"a\"]\nb = 'b'");
+
+    assertEquals("b", toml.getString("\"a\".b"));
+  }
+
+  @Test
+  public void should_accept_table_name_part_with_basic_string() {
+    Toml toml = new Toml().read("[target.\"cfg(unix)\".dependencies]\nb = 'b'");
+
+    assertEquals("b", toml.getString("target.\"cfg(unix)\".dependencies.b"));
+  }
+
+  @Test
+  public void should_accept_table_name_with_literal_string() {
+    Toml toml = new Toml().read("['a']\nb = 'b'");
+
+    assertEquals("b", toml.getString("'a'.b"));
+  }
+
+  @Test
+  public void should_accept_table_name_part_with_literal_string() {
+    Toml toml = new Toml().read("[target.'cfg(unix)'.dependencies]\nb = 'b'");
+
+    assertEquals("b", toml.getString("target.'cfg(unix)'.dependencies.b"));
+  }
   
   @Test
   public void should_return_null_when_navigating_to_missing_value() throws Exception {