X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;f=src%2Flib%2F16_head.c;h=7f46743e44644c2f9fb9d722358f8b72c9f6620b;hb=ba5025039e28bb59e7894b9d4e85a049c4c70373;hp=f48a09c868fb78fad6e99ae023e9a9fa6fc80f5d;hpb=fa252ebd82649e4f3bab4a53228828766713ad6c;p=16.git

diff --git a/src/lib/16_head.c b/src/lib/16_head.c
index f48a09c8..7f46743e 100755
--- a/src/lib/16_head.c
+++ b/src/lib/16_head.c
@@ -34,6 +34,73 @@ filesize(FILE *fp)
 	return(size_of_file);
 }
 
+//from http://stackoverflow.com/questions/2736753/how-to-remove-extension-from-file-name
+// remove_ext: removes the "extension" from a file spec.
+//   mystr is the string to process.
+//   dot is the extension separator.
+//   sep is the path separator (0 means to ignore).
+// Returns an allocated string identical to the original but
+//   with the extension removed. It must be freed when you're
+//   finished with it.
+// If you pass in NULL or the new string can't be allocated,
+//   it returns NULL.
+
+char *remove_ext (char* mystr, char dot, char sep) {
+	char *retstr, *lastdot, *lastsep;
+
+	// Error checks and allocate string.
+
+	if (mystr == NULL)
+		return NULL;
+	if ((retstr = malloc (strlen (mystr) + 1)) == NULL)
+		return NULL;
+
+	// Make a copy and find the relevant characters.
+
+	strcpy (retstr, mystr);
+	lastdot = strrchr (retstr, dot);
+	lastsep = (sep == 0) ? NULL : strrchr (retstr, sep);
+
+	// If it has an extension separator.
+
+	if (lastdot != NULL) {
+		// and it's before the extenstion separator.
+
+		if (lastsep != NULL) {
+			if (lastsep < lastdot) {
+				// then remove it.
+
+				*lastdot = '\0';
+			}
+		} else {
+			// Has extension separator with no path separator.
+
+			*lastdot = '\0';
+		}
+	}
+
+	// Return the modified string.
+
+	return retstr;
+}
+
+//from http://quiz.geeksforgeeks.org/c-program-cyclically-rotate-array-one/
+void rotateR(byte *arr, byte n)
+{
+	byte x = arr[n-1], i;
+	for (i = n-1; i > 0; i--)
+		arr[i] = arr[i-1];
+	arr[0] = x;
+}
+
+void rotateL(byte *arr, byte n)
+{
+	byte x = arr[n+1], i;
+	for (i = n+1; i > 0; i++)
+		arr[i] = arr[i+1];
+	arr[0] = x;
+}
+
 void printmeminfoline(byte *strc, const byte *pee, size_t h_total, size_t h_used, size_t h_free)
 {
 	byte str[64];