diff -r 000000000000 -r 218904410231 gclib/utils.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gclib/utils.c	Fri Jan 27 00:28:11 2012 +0000
@@ -0,0 +1,46 @@
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <gclib/mem.h>
+#include <gclib/strfuncs.h>
+#include <gclib/utils.h>
+
+#define is_valid_drive(d)	((d)>='a' && (d)<='z' || (d)>='A' && (d)<='Z')
+
+/*
+ * Gets the last component of the filename. If filename ends with a directory
+ * separator it gets the component before the last slash. If filename consists
+ * only of directory separators (and on Windows, possibly a drive letter), a
+ * single separator is returned. If filename is empty, it gets ".".
+ */
+char *path_get_basename(const char *filename)
+{
+    ssize_t base,last_nonslash;
+    size_t len;
+    char *retval;
+    if (*filename=='\0')
+        return str_dup(".");
+    last_nonslash=strlen(filename)-1;
+    while (last_nonslash>=0 && GC_IS_DIR_SEPARATOR(filename[last_nonslash]))
+	last_nonslash--;
+    if (last_nonslash<0)
+	/* string only containing slashes */
+    return str_dup(GC_DIR_SEPARATOR_S);
+#ifdef WIN32
+    if (last_nonslash==1 && is_valid_drive(filename[0]) && filename[1]==':')
+	/* string only containing slashes and a drive */
+	return str_dup(GC_DIR_SEPARATOR_S);
+#endif
+    base=last_nonslash;
+    while (base>=0 && !GC_IS_DIR_SEPARATOR(filename[base]))
+	base--;
+#ifdef WIN32
+    if (base==-1 && is_valid_drive(filename[0]) && filename[1] == ':')
+	  base=1;
+#endif
+    len=last_nonslash-base;
+    retval=mem_alloc(len+1,1);
+    memcpy(retval,filename+base+1,len);
+    retval[len]='\0';
+    return retval;
+}