* simdb_error() : refactor

src/database.c

@@ -149,28 +149,20 @@ simdb_close(simdb_t *db) {
 
 const char *
 simdb_error(int error) {
-  if (error == SIMDB_SUCCESS) {
+  const char *errstr = NULL;
-    return "success";
+  switch (error) {
-  } else if (error == SIMDB_ERR_SYSTEM) {
+    case SIMDB_SUCCESS        : errstr = "success"; break;
-    return strerror(errno);
+    case SIMDB_ERR_SYSTEM     : errstr = strerror(errno); break;
-  } else if (error == SIMDB_ERR_OOM) {
+    case SIMDB_ERR_OOM        : errstr = "can't allocate memory"; break;
-    return "can't allocate memory";
+    case SIMDB_ERR_CORRUPTDB  : errstr = "database corrupted"; break;
-  } else if (error == SIMDB_ERR_CORRUPTDB) {
+    case SIMDB_ERR_WRONGVERS  : errstr = "database version differs from library version"; break;
-    return "database corrupted";
+    case SIMDB_ERR_READONLY   : errstr = "database opened in read-only mode"; break;
-  } else if (error == SIMDB_ERR_WRONGVERS) {
+    case SIMDB_ERR_NXRECORD   : errstr = "no such record in database"; break;
-    return "database version differs from library version";
+    case SIMDB_ERR_USAGE      : errstr = "wrong parameters passed to finction"; break;
-  } else if (error == SIMDB_ERR_READONLY) {
+    case SIMDB_ERR_LOCK       : errstr = "can't add lock on database file"; break;
-    return "database opened in read-only mode";
+    default                   : errstr = "unknown error"; break;
-  } else if (error == SIMDB_ERR_NXRECORD) {
+  }
-    return "no such record in database";
+  return errstr;
-  } else if (error == SIMDB_ERR_USAGE) {
-    return "wrong parameters passed to finction";
-  } else if (error == SIMDB_ERR_SAMPLER) {
-    return "given file not an image, damaged or has unsupported format";
-  } else if (error == SIMDB_ERR_LOCK) {
-    return "can't add lock on database file";
-  }
-  return "unknown error";
 }
 
 int