Added form::startsWithVowelSound convenience method

1 files changed, 33 insertions, 11 deletions

@@ -1,26 +1,26 @@
 #include "form.h"
 #include <sqlite3.h>
 #include "filter.h"
-#include "pronunciation.h"
 #include "database.h"
 #include "query.h"
+#include "util.h"
 
 namespace verbly {
-  
+
   const object form::objectType = object::form;
-  
+
   const std::list<std::string> form::select = {"form_id", "form", "complexity", "proper"};
-  
+
   const field form::id = field::integerField(object::form, "form_id");
   const field form::text = field::stringField(object::form, "form");
   const field form::complexity = field::integerField(object::form, "complexity");
   const field form::proper = field::booleanField(object::form, "proper");
-  
+
   const field form::pronunciation = field::joinThrough(object::form, "form_id", object::pronunciation, "forms_pronunciations", "pronunciation_id");
-  
+
   const field form::lemmaJoin = field::joinField(object::form, "form_id", object::lemma);
   const field form::inflectionCategory = field::integerField("lemmas_forms", "category");
-  
+
   form::form(const database& db, sqlite3_stmt* row) : db_(&db), valid_(true)
   {
     id_ = sqlite3_column_int(row, 0);
@@ -28,7 +28,7 @@ namespace verbly {
     complexity_ = sqlite3_column_int(row, 2);
     proper_ = (sqlite3_column_int(row, 3) == 1);
   }
-  
+
   filter operator%=(form::inflection_field check, filter joinCondition)
   {
     return (form::lemmaJoin %= (joinCondition && (form::inflectionCategory == check.getCategory())));
@@ -40,14 +40,36 @@ namespace verbly {
     {
       throw std::domain_error("Bad access to uninitialized form");
     }
-    
+
     if (!initializedPronunciations_)
     {
       pronunciations_ = db_->pronunciations(pronunciation::form %= *this, false, -1).all();
       initializedPronunciations_ = true;
     }
-    
+
     return pronunciations_;
   }
-  
+
+  bool form::startsWithVowelSound() const
+  {
+    if (!valid_)
+    {
+      throw std::domain_error("Bad access to uninitialized form");
+    }
+
+    const std::vector<verbly::pronunciation>& pronunciations = getPronunciations();
+    if (!pronunciations.empty())
+    {
+      return std::any_of(std::begin(pronunciations), std::end(pronunciations), [] (const verbly::pronunciation& p) {
+        std::cout << "phonemes: " << implode(std::begin(p.getPhonemes()), std::end(p.getPhonemes()), ",") << std::endl;
+        return p.getPhonemes().front().find_first_of("012") != std::string::npos;
+      });
+    } else {
+      // If the word is not in CMUDICT, fall back to checking whether the first letter is a vowel.
+      // Not perfect but will work in most cases.
+      char ch = std::tolower(text_.front());
+      return (ch == 'a') || (ch == 'e') || (ch == 'i') || (ch == 'o') || (ch == 'u');
+    }
+  }
+
 };