Add dirname(3) and basename(3).

libc/Makefile

@@ -155,6 +155,7 @@ arpa/inet/inet_addr.o \
 arpa/inet/inet_ntoa.o \
 arpa/inet/inet_ntop.o \
 arpa/inet/inet_pton.o \
+basename.o \
 calltrace.o \
 canonicalize_file_name_at.o \
 canonicalize_file_name.o \
@@ -168,6 +169,7 @@ $(CPUDIR)/fork.o \
 $(CPUDIR)/signal.o \
 $(CPUDIR)/syscall.o \
 creat.o \
+dirname.o \
 dispmsg_issue.o \
 dlfcn.o \
 dup2.o \

libc/basename.cpp

@@ -0,0 +1,46 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library 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 Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    basename.cpp
+    Returns the name part of a path.
+
+*******************************************************************************/
+
+#include <libgen.h>
+#include <string.h>
+
+char* basename(char* path)
+{
+	static char static_stuff[2];
+	if ( !path || !*path )
+	{
+		static_stuff[0] = '.';
+		static_stuff[1] = '\0';
+		return static_stuff;
+	}
+	size_t path_len = strlen(path);
+	while ( 2 <= path_len && path[path_len-1] == '/' )
+		path[--path_len] = '\0';
+	if ( strcmp(path, "/") == 0 )
+		return path;
+	char* last_slash = strchr(path, '/');
+	if ( !last_slash )
+		return path;
+	return last_slash + 1;
+}

libc/dirname.cpp

@@ -0,0 +1,47 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library 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 Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    dirname.cpp
+    Returns the directory part of a path.
+
+*******************************************************************************/
+
+#include <libgen.h>
+#include <string.h>
+
+char* dirname(char* path)
+{
+	static char static_stuff[2];
+	if ( !path || !*path )
+	{
+		static_stuff[0] = '.';
+		static_stuff[1] = '\0';
+		return static_stuff;
+	}
+	size_t path_len = strlen(path);
+	while ( 2 <= path_len && path[path_len-1] == '/' )
+		path[--path_len] = '\0';
+	if ( strcmp(path, "/") == 0 )
+		return path;
+	char* last_slash = strchr(path, '/');
+	if ( !last_slash )
+		return dirname(NULL);
+	*last_slash = '\0';
+	return path;
+}

libc/include/libgen.h

@@ -0,0 +1,37 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library 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 Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    libgen.h
+    What's left of some old pattern matching library.
+
+*******************************************************************************/
+
+#ifndef INCLUDE_LIBGEN_H
+#define INCLUDE_LIBGEN_H
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+char* dirname(char* path);
+char* basename(char* path);
+
+__END_DECLS
+
+#endif