state(): uCDB state. open(): hash tab pos can't be 0. More tests

extras/tests/tests.ino

@@ -133,6 +133,86 @@ bool closed_test3() {
   return true;
 }
 
+int read_value_without_find_test() {
+  uCDB<SdFat, File> ucdb(fat);
+  byte buff[64];
+
+  if (ucdb.open("airports.cdb" ) != CDB_OK) {
+    ucdb.close();
+    return -1;
+  }
+
+  if (ucdb.state() != CDB_OK)
+    return -100;
+
+  if (ucdb.valueAvailable() != 0)
+    return -2;
+  if (ucdb.readValue() != -1)
+    return -3;
+  if (ucdb.readValue(buff, 1) != -1)
+    return -4;
+
+  return 1;
+}
+
+int read_value_find_fail_test() {
+  uCDB<SdFat, File> ucdb(fat);
+  byte buff[64];
+
+  if (ucdb.open("airports.cdb" ) != CDB_OK) {
+    ucdb.close();
+    return -1;
+  }
+
+  if (ucdb.state() != CDB_OK)
+    return -100;
+
+  if (ucdb.findKey("AAAAAAAA", 8) != KEY_NOT_FOUND)
+    return -2;
+
+  if (ucdb.valueAvailable() != 0)
+    return -3;
+  if (ucdb.readValue() != -1)
+    return -4;
+  if (ucdb.readValue(buff, 1) != -1)
+    return -5;
+
+  return 1;
+}
+
+int read_value_find_ok_test() {
+  uCDB<SdFat, File> ucdb(fat);
+  byte buff[64];
+
+  if (ucdb.open("airports.cdb" ) != CDB_OK) {
+    ucdb.close();
+    return -1;
+  }
+
+  if (ucdb.state() != CDB_OK)
+    return -100;
+
+  if (ucdb.findKey("ZYGH", 4) != KEY_FOUND)
+    return -2;
+
+  if (ucdb.valueAvailable() <= 0)
+    return -3;
+
+  while (ucdb.readValue() >= 0);
+
+  if (ucdb.valueAvailable() != 0)
+    return -4;
+
+  if (ucdb.readValue() != -1)
+    return -5;
+  if (ucdb.readValue(buff, 1) != 0)
+    return -6;
+  if (ucdb.valueAvailable() != 0)
+    return -7;
+
+  return 1;
+}
+
 bool random_test1() {
   uCDB<SdFat, File> ucdb(fat);
   byte buff[64];
@@ -315,6 +395,16 @@ void loop() {
   Serial.println(closed_test1());
   Serial.println(closed_test2());
   Serial.println(closed_test3());
+
+  Serial.println("read_value_without_find_test");
+  Serial.println(read_value_without_find_test());
+
+  Serial.println("read_value_find_fail_test");
+  Serial.println(read_value_find_fail_test());
+
+  Serial.println("read_value_find_ok_test");
+  Serial.println(read_value_find_ok_test());
+
   Serial.println(random_test1());
   Serial.println(random_test2());
   Serial.println(random_test3());

library.properties

@@ -1,5 +1,5 @@
 name=uCDB
-version=0.5.4
+version=0.5.5
 author=Ioulianos Kakoulidis
 maintainer=Ioulianos Kakoulidis <[email protected]>
 sentence=API for querying Constant DataBase file store.

src/uCDB.hpp

@@ -50,7 +50,7 @@
 
 #define UCDB_VERSION_MAJOR 0
 #define UCDB_VERSION_MINOR 5
-#define UCDB_VERSION_PATCH 4
+#define UCDB_VERSION_PATCH 5
 
 #ifdef TRACE_CDB
 #ifndef TracePrinter
@@ -144,6 +144,13 @@ class uCDB
       return (state_ == KEY_FOUND ? valueBytesAvail_ : 0);
     }
 
+    /**
+        The UCDB state
+    */
+    cdbResult state() const {
+      return state_;
+    }
+
     /**
         Close CDB
     */
@@ -164,7 +171,7 @@ class uCDB
     unsigned long keyHash_;
 
     unsigned long dataEndPos_; ///< Data end position
-    unsigned long slotsNum_;   ///< Total slots number in CDB.
+    unsigned long slotsNum_;   ///< Total slots number in CDB
 
     unsigned int hashTabID_; ///< Last accessed hash table
     /// @name Hash table descriptor (HEADER section)
@@ -245,9 +252,6 @@ cdbResult uCDB<TFileSystem, TFile>::open(const char *fileName, unsigned long (*u
     htPos = unpack(buff);
     htSlotsNum = unpack(buff + 4);
 
-    if (!htPos) {
-      continue; // Empty hash table
-    }
     if ((htPos < CDB_HEADER_SIZE) || (htPos > cdb_.size())) {
       RETURN(state_ = CDB_ERROR, htPos); // Critical CDB format or data integrity error
     }
@@ -273,6 +277,7 @@ cdbResult uCDB<TFileSystem, TFile>::open(const char *fileName, unsigned long (*u
   dataEndPos_ = dend;
   slotsNum_ = snum;
   hashFunc = userHashFunc;
+
   return (state_ = CDB_OK);
 }