IO: add functions to get the path of a binary archive

src/IO/binary_archive.cpp

@@ -41,6 +41,39 @@ namespace bitpit {
 
 const std::string BinaryArchive::EXTENSION_DEFAULT = "dat";
 
+/*!
+    Generates the path of the archive with the specified properties.
+
+    \param name is the name of the file
+    \param block is the parallel block thefile belongs to, a negative value
+    mean that the file is serial
+    \result The path of the archive with the specified properties.
+*/
+std::string BinaryArchive::generatePath(const std::string &name, int block)
+{
+    return generatePath(name, EXTENSION_DEFAULT, block);
+}
+
+/*!
+    Generates the path of the archive with the specified properties.
+
+    \param name is the name of the file
+    \param extension is the extension of the file
+    \param block is the parallel block thefile belongs to, a negative value
+    mean that the file is serial
+    \result The path of the archive with the specified properties.
+*/
+std::string BinaryArchive::generatePath(const std::string &name, const std::string &extension, int block)
+{
+    FileHandler fileHandler("", name, extension);
+    if (block >= 0) {
+        fileHandler.setParallel(true);
+        fileHandler.setBlock(block);
+    }
+
+    return fileHandler.getPath();
+}
+
 /*!
     Default constructor
 */
@@ -74,13 +107,8 @@ void BinaryArchive::open(const std::string &name, const std::string &extension,
         close();
     }
 
-    FileHandler fileHandler("", name, extension);
-    if (block >= 0) {
-        fileHandler.setParallel(true);
-        fileHandler.setBlock(block);
-    }
-
-    std::fstream::open(fileHandler.getPath().c_str(), std::ios::binary | mode);
+    m_path = generatePath(name, extension, block);
+    std::fstream::open(m_path.c_str(), std::ios::binary | mode);
     if (fail() && bad()) {
         return;
     }
@@ -106,6 +134,16 @@ std::string BinaryArchive::getHeader() const
     return m_header;
 }
 
+/*!
+    Gets the path of the archive.
+
+    \result The path of the archive.
+*/
+std::string BinaryArchive::getPath() const
+{
+    return m_path;
+}
+
 /*!
     \ingroup Binary
     \class IBinaryArchive

src/IO/binary_archive.hpp

@@ -40,17 +40,22 @@ class BinaryArchive : protected std::fstream
 
     static const std::string EXTENSION_DEFAULT;
 
+    static std::string generatePath(const std::string &name, int block = -1);
+    static std::string generatePath(const std::string &name, const std::string &extension, int block = -1);
+
     using std::fstream::close;
 
     BinaryArchive();
     ~BinaryArchive();
 
     int getVersion() const;
     std::string getHeader() const;
+    std::string getPath() const;
 
 protected:
     int m_version;
     std::string m_header;
+    std::string m_path;
 
     void open(const std::string &name, const std::string &extension,
               ios_base::openmode mode, int block = -1);