Accept FS #7667 by Alexander Levin with minor fixes by me. Splits the shortcuts plugin into two, one for adding and one for viewing. Removes hard-coded file extension and allows to link from one shortcut file to another.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14599 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/shortcuts/shortcuts_append.c

@@ -0,0 +1,109 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2007 Bryan Childs
+ * Copyright (c) 2007 Alexander Levin
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "shortcuts.h"
+
+PLUGIN_HEADER
+
+
+bool append_entry_to_file(sc_file_t *file, char *path, bool is_dir)
+{
+    sc_entry_t entry;
+
+    unsigned int required_len = rb->strlen(path);
+    if (is_dir) {
+        required_len += PATH_SEPARATOR_LEN; /* Add 1 for the trailing / */
+    }
+    if (required_len >= sizeof(entry.path)) {
+        /* no attempt to print it: it will also be so too long for the splash */
+        rb->splash(HZ*2, "Can't append shortcut, it's too long");
+        return false;
+    }
+    entry.explicit_disp = false;
+    rb->strcpy(entry.path, path);
+    if (is_dir) {
+        rb->strcat(entry.path, PATH_SEPARATOR);
+    }
+    if (!append_entry(file, &entry)) {
+        rb->splash(HZ*2, "Too many entries!");
+        return false;
+    }
+    return true;
+}
+
+
+enum plugin_status plugin_start(struct plugin_api* api, void* void_parameter)
+{
+    rb = api;
+    bool found;
+    bool its_a_dir;
+    
+    /* This is a viewer, so a parameter must have been specified */
+    if (void_parameter == NULL) {
+        rb->splash(HZ*2, "No parameter specified!");
+        return PLUGIN_ERROR;
+    }
+    char *parameter = (char*)void_parameter;
+    DEBUGF("Trying to append '%s' to the default link file '%s'...\n",
+            parameter, SHORTCUTS_FILENAME);
+
+    allocate_memory(&memory_buf, &memory_bufsize);
+
+    /* Determine if it's a file or a directory. First check
+     * if it's a dir and then file (not vice versa) since
+     * open() can also open a dir */
+    found = true;
+    if (dir_exists(parameter)) {
+        its_a_dir = true;
+    } else if (file_exists(parameter)) {
+        its_a_dir = false;
+    } else {
+        found = false;
+    }
+    /* now we know if it's a file or a directory
+     * (or something went wrong) */
+
+    if (!found) {
+        /* Something's gone properly pear shaped -
+         * we couldn't even find the entry */
+        rb->splash(HZ*2, "File/Dir not found: %s", parameter);
+        return PLUGIN_ERROR;
+    }
+
+    DEBUGF("'%s' is a %s\n", parameter, (its_a_dir ? "dir" : "file"));
+
+    if (!load_sc_file(&sc_file, SHORTCUTS_FILENAME, false,
+                memory_buf, memory_bufsize)) {
+        DEBUGF("Couldn't load '%s'\n", SHORTCUTS_FILENAME);
+        return PLUGIN_ERROR;
+    }
+    
+    if (!append_entry_to_file(&sc_file, parameter, its_a_dir)) {
+        DEBUGF("Couldn't append entry (too many entries?)\n");
+        return PLUGIN_ERROR;
+    }
+    
+    if (!dump_sc_file(&sc_file, SHORTCUTS_FILENAME)) {
+        DEBUGF("Couldn't write shortcuts to '%s'\n", SHORTCUTS_FILENAME);
+        return PLUGIN_ERROR;
+    }
+
+    return PLUGIN_OK;
+}