Move most of the resource loading code into ResourceManager_base

I mostly do this to avoid code duplication between fluxbox and fluxbox-update_configs.

5 files changed, 52 insertions, 43 deletions

diff --git a/src/FbTk/LResource.cc b/src/FbTk/LResource.cc
index de90b95..18209cb 100644
--- a/src/FbTk/LResource.cc
+++ b/src/FbTk/LResource.cc
@@ -116,34 +116,12 @@ LResourceManager::LResourceManager(const std::string &root, Lua &l, unsigned int
     setLua(l);
 }
 
-void LResourceManager::load(const std::string &filename, const std::string &fallback) {
-    _FB_USES_NLS;
+void LResourceManager::doLoad(const std::string &filename) {
     m_l->checkstack(1);
     lua::stack_sentry s(*m_l);
 
-    m_filename = filename;
-
-    try {
-        m_l->loadfile(filename.c_str());
-        m_l->call(0, 0);
-    }
-    catch(lua::exception &e) {
-        std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database",
-                "Failed trying to read rc file") << ":" << filename << std::endl;
-        std::cerr << "Fluxbox: " << e.what() << std::endl;
-        std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFileTrying, "Retrying with",
-                "Retrying rc file loading with (the following file)")
-            << ": " << fallback << std::endl;
-        try {
-            m_l->loadfile(fallback.c_str());
-            m_l->call(0, 0);
-        }
-        catch(lua::exception &e) {
-            std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database", "")
-                << ": " << fallback << std::endl;
-            std::cerr << "Fluxbox: " << e.what() << std::endl;
-        }
-    }
+    m_l->loadfile(filename.c_str());
+    m_l->call(0, 0);
 }
 
 bool LResourceManager::save(const char *filename, const char *) {
@@ -153,8 +131,6 @@ bool LResourceManager::save(const char *filename, const char *) {
     if(filename == NULL)
         filename = m_filename.c_str();
 
-    std::cerr << "XXX SAVING " << filename << std::endl;
-
     m_l->getfield(lua::REGISTRYINDEX, dump_resources);
     m_l->getfield(lua::GLOBALSINDEX, m_root.c_str());
     m_l->pushstring(filename);
diff --git a/src/FbTk/LResource.hh b/src/FbTk/LResource.hh
index 30f0e02..a198197 100644
--- a/src/FbTk/LResource.hh
+++ b/src/FbTk/LResource.hh
@@ -45,7 +45,6 @@ public:
      * starts a timer. If another resource is modified, the timer is restarted. 0 = disabled
      */
     LResourceManager(const std::string &root, Lua &l, unsigned int autosave = 0);
-    void load(const std::string &filename, const std::string &fallback);
     virtual bool save(const char *filename, const char *);
     virtual void addResource(Resource_base &r);
     virtual void removeResource(Resource_base &r);
@@ -55,9 +54,9 @@ public:
 private:
     void doAddResource(Resource_base &r);
     void doRemoveResource(Resource_base &r);
+    virtual void doLoad(const std::string &filename);
 
     Lua *m_l;
-    std::string m_filename;
     Timer m_savetimer;
 };
 
diff --git a/src/FbTk/Resource.cc b/src/FbTk/Resource.cc
index 37555b3..8f63322 100644
--- a/src/FbTk/Resource.cc
+++ b/src/FbTk/Resource.cc
@@ -38,6 +38,33 @@ using std::string;
 namespace FbTk {
 
 
+void ResourceManager_base::load(const std::string &filename, const std::string &fallback) {
+    _FB_USES_NLS;
+
+    m_filename = filename;
+
+    try {
+        doLoad(filename);
+    }
+    catch(std::runtime_error &e) {
+        std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database",
+                "Failed trying to read rc file") << ":" << filename << std::endl;
+        std::cerr << "Fluxbox: " << e.what() << std::endl;
+        std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFileTrying, "Retrying with",
+                "Retrying rc file loading with (the following file)")
+            << ": " << fallback << std::endl;
+        try {
+            doLoad(fallback);
+        }
+        catch(std::runtime_error &e) {
+            std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database", "")
+                << ": " << fallback << std::endl;
+            std::cerr << "Fluxbox: " << e.what() << std::endl;
+            throw;
+        }
+    }
+}
+
 void ResourceManager_base::addResource(Resource_base &r) {
     m_resourcelist.push_back(&r);
     m_resourcelist.unique();
@@ -87,7 +114,6 @@ ResourceManager::ResourceManager(const std::string &root, const std::string &alt
  ResourceManager_base(root),
  m_db_lock(0),
  m_database(0),
- m_filename(filename ? filename : ""),
  m_alt_root(alt_root)
 {
     static bool xrm_initialized = false;
@@ -96,6 +122,7 @@ ResourceManager::ResourceManager(const std::string &root, const std::string &alt
         xrm_initialized = true;
     }
 
+    m_filename = filename ? filename : "";
     if (lock_db)
         lock();
 }
@@ -108,11 +135,9 @@ ResourceManager::~ResourceManager() {
 
 /**
   reloads all resources from resourcefile
-  @return true on success else false
+  throws an exception in case of failure
 */
-bool ResourceManager::load(const char *filename) {
-    m_filename = StringUtil::expandFilename(filename).c_str();
-
+void ResourceManager::doLoad(const std::string &filename) {
     // force reload (lock will ensure it exists)
     if (m_database) {
         delete m_database;
@@ -122,7 +147,7 @@ bool ResourceManager::load(const char *filename) {
     lock();
     if (!m_database) {
         unlock();
-        return false;
+        throw std::runtime_error("");
     }
 
     XrmValue value;
@@ -146,8 +171,6 @@ bool ResourceManager::load(const char *filename) {
     }
 
     unlock();
-
-    return true;
 }
 
 /**
diff --git a/src/FbTk/Resource.hh b/src/FbTk/Resource.hh
index c4a7951..700fe70 100644
--- a/src/FbTk/Resource.hh
+++ b/src/FbTk/Resource.hh
@@ -92,6 +92,11 @@ public:
 
     virtual ~ResourceManager_base() {}
 
+    /// Load all resources registered to this class
+    /// if loading of filename fails, it tries to load fallback
+    /// if that fails, it throws an exception
+    void load(const std::string &filename, const std::string &fallback);
+
     /// Save all resouces registered to this class
     /// @return true on success
     virtual bool save(const char *filename, const char *mergefilename=0) = 0;
@@ -130,8 +135,12 @@ public:
     ResourceList::const_iterator end() { return m_resourcelist.end(); }
 
 protected:
+    /// does the actual loading
+    virtual void doLoad(const std::string &filename) = 0;
+
     ResourceList m_resourcelist;
     const std::string m_root;
+    std::string m_filename;
 };
 
 class ResourceManager: public ResourceManager_base
@@ -143,10 +152,6 @@ public:
             const char *filename, bool lock_db);
     virtual ~ResourceManager();
 
-    /// Load all resources registered to this class
-    /// @return true on success
-    virtual bool load(const char *filename);
-
     /// Save all resouces registered to this class
     /// @return true on success
     virtual bool save(const char *filename, const char *mergefilename=0);
@@ -173,6 +178,7 @@ public:
         }
     }
 protected:
+    virtual void doLoad(const std::string &filename);
 
     int m_db_lock;
 
@@ -180,7 +186,6 @@ private:
 
     XrmDatabaseHelper *m_database;
 
-    std::string m_filename;
     std::string m_alt_root;
 };
 
diff --git a/src/fluxbox.cc b/src/fluxbox.cc
index 75f38d7..9e40f1f 100644
--- a/src/fluxbox.cc
+++ b/src/fluxbox.cc
@@ -1150,7 +1150,13 @@ string Fluxbox::getDefaultDataFilename(const char *name) const {
 /// loads resources
 void Fluxbox::load_rc() {
 
-    m_resourcemanager.load(getRcFilename(), DEFAULT_INITFILE);
+    try {
+        m_resourcemanager.load(getRcFilename(), DEFAULT_INITFILE);
+    }
+    catch(std::runtime_error &) {
+        // This should only happen if system-wide init file is broken.
+        // Not much we can do about that, so we just ignore it
+    }
 
     if (m_rc_menufile->empty())
         m_rc_menufile.setDefaultValue();