1 files changed, 159 insertions, 0 deletions
diff --git a/mixlib/mix_file.c b/mixlib/mix_file.c
new file mode 100644
index 0000000..383d3b4
--- /dev/null
+++ b/mixlib/mix_file.c
@@ -0,0 +1,159 @@
+/* -*-c-*- -------------- mix_file.c :
+ * Implementation of the functions declared in mix_file.h
+ * ------------------------------------------------------------------
+ * Copyright (C) 2000, 2001 Free Software Foundation, Inc. 
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *  
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *  
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *  
+ */
+
+#include <string.h>
+
+#include "xmix_io.h"
+#include "mix_file.h"
+
+const gchar *MIX_SRC_DEFEXT = ".mixal", 
+  *MIX_LIST_DEFEXT = ".mls", *MIX_CODE_DEFEXT = ".mix";
+
+/* file names completions */
+#define needs_completion_(name,defext) \
+  ( strcmp(name + strlen(name) - strlen(defext), defext) != 0 )
+
+#define add_completion_(name, defext) \
+  g_strconcat(name, defext, NULL)
+
+/* The actual definition of mix_file_t */
+struct mix_file_t 
+{
+  mix_iochannel_t parent;
+  gchar *base_name;
+  gchar *ext;
+};
+
+/* Creation/destruction of files */
+static mix_file_t *
+open_file_(const gchar *name, mix_fmode_t mode)
+{
+  mix_file_t *result;
+  FILE *file;
+  const gchar *fmode = fmode_to_type_ (mode);
+
+  /* if the read/write file already exists, open in r+ mode */
+  if (mode == mix_io_RDWRT && (file = fopen (name, "r")))
+    {
+      fmode = "r+";
+      fclose (file);
+    }
+  
+  result = g_new(mix_file_t, 1);
+  file = fopen(name, fmode);
+  if ( file == NULL ) {
+    g_free (result);
+    return NULL;
+  }
+  io_init_from_file_(MIX_IOCHANNEL(result), file);
+  return result;
+}
+  
+mix_file_t *
+mix_file_new(const gchar *name, mix_fmode_t mode)
+{
+  mix_file_t *result;
+  gchar *bname;
+
+  if ( name == NULL ) return NULL;
+  bname = g_strdup(name);
+  if ( bname == NULL ) return NULL;
+  result = open_file_(name, mode);
+  if ( result == NULL )
+    {
+      g_free(bname);
+      return NULL;
+    }
+  result->base_name = bname;
+  result->ext = NULL;
+  return result;
+}
+
+/* creates a file adding to its name the defext if missing */
+mix_file_t *
+mix_file_new_with_def_ext(const gchar *name, mix_fmode_t mode, 
+			  const gchar *defext)
+{
+  const gchar *real_name;
+  mix_file_t *result;
+  
+  if ( name == NULL ) return NULL;
+  if ( defext == NULL ) return mix_file_new(name, mode);
+  real_name =  needs_completion_(name, defext) ? 
+    add_completion_(name, defext) : name;
+  result = open_file_(real_name, mode);
+  if ( real_name != name ) g_free((void *)real_name);
+  if ( result  == NULL ) return NULL;
+  result->ext = g_strdup(defext);
+  if ( needs_completion_(name, defext) )
+    result->base_name = g_strdup(name);
+  else
+    result->base_name = g_strndup(name, strlen(name) - strlen(defext));
+  if ( result->ext == NULL || result->base_name == NULL )
+    {
+      mix_file_delete(result);
+      return NULL;
+    }
+  return result;
+}
+
+void
+mix_file_delete(mix_file_t *file)
+{
+  g_return_if_fail(file != NULL);
+  io_close_(MIX_IOCHANNEL(file));
+  if (file->base_name) g_free(file->base_name);
+  if (file->ext) g_free(file->ext);
+  g_free(file);
+}
+
+/* convert to a standard FILE */
+extern FILE *
+mix_file_to_FILE(const mix_file_t *file)
+{
+  if ( file == NULL ) return NULL;
+  return io_get_FILE_(file);
+}
+
+/* complete a name with an extension, if needed */
+gchar *
+mix_file_complete_name (const gchar *name, const gchar *extension)
+{
+  if (!name) return NULL;
+  if (!extension || !needs_completion_ (name, extension))
+    return g_strdup (name);
+  return add_completion_ (name, extension);
+}
+
+/* Get the base name and extension of file */
+const gchar *
+mix_file_base_name(const mix_file_t *file)
+{
+  g_return_val_if_fail(file != NULL, NULL);
+  return file->base_name;
+}
+
+const gchar *
+mix_file_extension(const mix_file_t *file)
+{
+  g_return_val_if_fail(file != NULL, NULL);
+  return file->ext;
+}