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npe: add libgen.h

--- /dev/null

+++ b/include/npe/libgen.h

@@ -1,0 +1,9 @@

+#ifndef _npe_libgen_h_

+#define _npe_libgen_h_

+

+#include <npe.h>

+

+char *dirname(char *path);

+char *basename(char *path);

+

+#endif

--- /dev/null

+++ b/libnpe/basename.c

@@ -1,0 +1,20 @@

+#include <libgen.h>

+

+char*

+basename(char *path)

+{

+	char *p;

+

+	if(path == nil || path[0] == 0)

+		return ".";

+	if(path[0] != 0 && path[0] == '/' && path[1] == 0)

+		return path;

+	p = path + strlen(path);

+	for(p--; p > path+1 && *p == '/'; p--)

+		*p = 0;

+	for(p--; p > path && *p != '/'; p--)

+		;

+	if(*p == '/')

+		return p+1;

+	return p;

+}

--- /dev/null

+++ b/libnpe/dirname.c

@@ -1,0 +1,24 @@

+#include <libgen.h>

+

+char*

+dirname(char *path)

+{

+	char *p;

+

+	if(path == nil || path[0] == 0)

+		return ".";

+	if(path[0] != 0 && path[0] == '/' && path[1] == 0)

+		return path;

+	p = path + strlen(path);

+	for(p--; p > path+1 && *p == '/'; p--)

+		*p = 0;

+	for(p--; p > path && *p != '/'; p--)

+		;

+	if(*p == '/' && p == path)

+		return "/";

+	if(p == path)

+		return ".";

+	if(*p == '/')

+		*p = 0;

+	return path;

+}

--- a/libnpe/mkfile

+++ b/libnpe/mkfile

@@ -11,8 +11,10 @@

 OFILES=\

 	_main.$O\

 	_npe.$O\

+	basename.$O\

 	closedir.$O\

 	dirfd.$O\

+	dirname.$O\

 	exp2.$O\

 	fstatat.$O\

 	fts_children.$O\