added more file-based classes; file_status needs to output timestamp info too

svn path=/trunk/externals/hcs/; revision=5192

1 files changed, 222 insertions, 0 deletions

diff --git a/file_status.c b/file_status.c
new file mode 100644
index 0000000..89780e1
--- /dev/null
+++ b/file_status.c
@@ -0,0 +1,222 @@
+/* --------------------------------------------------------------------------*/
+/*                                                                           */
+/* object for getting file type (dir, link, exe, etc) using a filename       */
+/* Written by Hans-Christoph Steiner <hans@at.or.at>                         */
+/*                                                                           */
+/* Copyright (c) 2006 Hans-Christoph Steiner                                 */
+/*                                                                           */
+/* 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.                    */
+/*                                                                           */
+/* See file LICENSE for further informations on licensing terms.             */
+/*                                                                           */
+/* 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.           */
+/*                                                                           */
+/* --------------------------------------------------------------------------*/
+
+#include <m_pd.h>
+
+#ifdef _WIN32
+#define _WIN32_WINNT 0x0400
+#include <windows.h>
+#include <stdio.h>
+#else
+#include <stdlib.h>
+#endif
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+
+static char *version = "$Revision: 1.1 $";
+
+t_int file_status_instance_count;
+
+#define DEBUG(x)
+//#define DEBUG(x) x 
+
+/*------------------------------------------------------------------------------
+ *  CLASS DEF
+ */
+static t_class *file_status_class;
+
+typedef struct _file_status {
+	t_object            x_obj;
+	t_symbol            *x_filename;
+	t_outlet            *x_data_outlet;
+	t_outlet            *x_status_outlet;
+} t_file_status;
+
+/*------------------------------------------------------------------------------
+ * IMPLEMENTATION                    
+ */
+
+static void file_status_output_error(t_file_status *x, int error_number)
+{
+	t_atom output_atoms[2];
+	switch(error_number)
+	{
+	case EACCES:
+		error("[file_status]: access denied: %s", x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("access"));
+		break;
+	case EIO:
+		error("[file_status]: An error occured while reading %s", 
+			  x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("io"));
+		break;
+	case ELOOP:
+		error("[file_status]: A loop exists in symbolic links in %s", 
+			  x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("loop"));
+		break;
+	case ENAMETOOLONG:
+		error("[file_status]: The filename %s is too long", 
+			  x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("name_too_long"));
+		break;
+	case ENOENT:
+		error("[file_status]: %s does not exist", x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("does_not_exist"));
+		break;
+	case ENOTDIR:
+		error("[file_status]: A component of %s is not a existing folder", 
+			  x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("not_folder"));
+		break;
+	case EOVERFLOW:
+		error("[file_status]: %s caused overflow in stat struct", 
+			  x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("overflow"));
+		break;
+	case EFAULT:
+		error("[file_status]: fault in stat struct (%s)", x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("fault"));
+		break;
+	case EINVAL:
+		error("[file_status]: invalid argument to stat() (%s)", 
+			  x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("invalid"));
+		break;
+	default:
+		error("[file_status]: unknown error %d: %s", 
+			  error_number, x->x_filename->s_name);
+		SETSYMBOL(output_atoms, gensym("unknown"));
+	}
+	SETSYMBOL(output_atoms + 2, x->x_filename);
+	outlet_anything(x->x_status_outlet, gensym("error"), 2, output_atoms);
+}
+
+static void file_status_output(t_file_status* x)
+{
+	DEBUG(post("file_status_output"););
+	struct stat stat_buffer;
+	int result;
+	t_atom output_atoms[7];
+
+#ifdef _WIN32
+	result = _stat(x->x_filename, &stat_buffer);
+#else
+	result = stat(x->x_filename->s_name, &stat_buffer);
+#endif /* _WIN32 */
+	if(result != 0)
+	{
+		file_status_output_error(x, result);
+	}
+	else
+	{
+		/* TODO: output time stamps, in which format? */
+		SETFLOAT(output_atoms, (t_float) stat_buffer.st_nlink);
+		SETFLOAT(output_atoms + 1, (t_float) stat_buffer.st_uid);
+		SETFLOAT(output_atoms + 2, (t_float) stat_buffer.st_gid);
+		SETFLOAT(output_atoms + 3, (t_float) stat_buffer.st_rdev);
+		SETFLOAT(output_atoms + 4, (t_float) stat_buffer.st_size);
+		SETFLOAT(output_atoms + 5, (t_float) stat_buffer.st_blocks);
+		SETFLOAT(output_atoms + 6, (t_float) stat_buffer.st_blksize);
+		outlet_anything(x->x_data_outlet,x->x_filename,7,output_atoms);
+	}
+}
+
+
+static void file_status_set(t_file_status* x, t_symbol *s) 
+{
+	DEBUG(post("file_status_set"););
+#ifdef _WIN32
+	char string_buffer[MAX_PATH];
+	ExpandEnvironmentStrings(s->s_name, string_buffer, MAX_PATH);
+	x->x_filename = gensym(string_buffer);
+#else
+	x->x_filename = s;
+#endif	
+}
+
+
+static void file_status_symbol(t_file_status *x, t_symbol *s) 
+{
+   file_status_set(x,s);
+   file_status_output(x);
+}
+
+
+static void *file_status_new(t_symbol *s) 
+{
+	DEBUG(post("file_status_new"););
+
+	t_file_status *x = (t_file_status *)pd_new(file_status_class);
+
+	if(!file_status_instance_count) 
+	{
+		post("[file_status] %s",version);  
+		post("\twritten by Hans-Christoph Steiner <hans@at.or.at>");
+		post("\tcompiled on "__DATE__" at "__TIME__ " ");
+	}
+	file_status_instance_count++;
+
+
+    symbolinlet_new(&x->x_obj, &x->x_filename);
+	x->x_data_outlet = outlet_new(&x->x_obj, 0);
+	x->x_status_outlet = outlet_new(&x->x_obj, 0);
+
+	/* set to the value from the object argument, if that exists */
+	if (s != &s_)
+	{
+		x->x_filename = s;
+	}
+	else
+	{
+		x->x_filename = canvas_getcurrentdir();
+		post("setting pattern to default: %s",x->x_filename->s_name);
+	}
+
+	return (x);
+}
+
+void file_status_setup(void) 
+{
+	DEBUG(post("file_status_setup"););
+	file_status_class = class_new(gensym("file_status"), 
+								  (t_newmethod)file_status_new, 
+								  0,
+								  sizeof(t_file_status), 
+								  0, 
+								  A_DEFSYM, 
+								  0);
+	/* add inlet datatype methods */
+	class_addbang(file_status_class,(t_method) file_status_output);
+	class_addsymbol(file_status_class,(t_method) file_status_symbol);
+	
+	/* add inlet message methods */
+	class_addmethod(file_status_class,(t_method) file_status_set,gensym("set"), 
+					A_DEFSYM, 0);
+}
+