1 files changed, 64 insertions, 0 deletions
diff --git a/e2fsprogs/e2p/parse_num.c b/e2fsprogs/e2p/parse_num.c
new file mode 100644
index 0000000..3910e70
--- /dev/null
+++ b/e2fsprogs/e2p/parse_num.c
@@ -0,0 +1,64 @@
+/*
+ * parse_num.c		- Parse the number of blocks 
+ *
+ * Copyright (C) 2004,2005  Theodore Ts'o <tytso@mit.edu>
+ * 
+ * This file can be redistributed under the terms of the GNU Library General
+ * Public License
+ */
+
+#include "e2p.h"
+
+#include <stdlib.h>
+
+unsigned long parse_num_blocks(const char *arg, int log_block_size)
+{
+	char *p;
+	unsigned long long num;
+
+	num = strtoull(arg, &p, 0);
+
+	if (p[0] && p[1]) 
+		return 0;
+
+	switch (*p) {		/* Using fall-through logic */
+	case 'T': case 't': 
+		num <<= 10;
+	case 'G': case 'g': 
+		num <<= 10;
+	case 'M': case 'm': 
+		num <<= 10;
+	case 'K': case 'k': 
+		num >>= log_block_size; 
+		break;
+	case 's': 
+		num >>= 1;
+		break;
+	case '\0':
+		break;
+	default: 
+		return 0;
+	}
+	return num;
+}
+
+#ifdef DEBUG
+#include <unistd.h>
+#include <stdio.h>
+
+main(int argc, char **argv)
+{
+	unsigned long num;
+	int log_block_size = 0;
+
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s arg\n", argv[0]);
+		exit(1);
+	}
+
+	num = parse_num_blocks(argv[1], log_block_size);
+
+	printf("Parsed number: %lu\n", num);
+	exit(0);
+}
+#endif