fossilize-prune: add --max-size option

cli/cli_parser.cpp

@@ -143,4 +143,32 @@ const char *CLIParser::next_string()
 	argv++;
 	return ret;
 }
+
+size_t CLIParser::next_size()
+{
+	const char *max_size_str = next_string();
+	size_t max_size;
+	if (max_size_str) {
+		char *end;
+		max_size = strtoul(max_size_str, &end, 10);
+		if (end == max_size_str) {
+			max_size = 0;
+		} else {
+			switch (*end)
+			{
+			case 'K':
+			case 'k':
+				max_size *= 1024;
+				break;
+			case 'M':
+			case 'm':
+				max_size *= 1024*1024;
+				break;
+			default:
+				break;
+			}
+		}
+   }
+   return max_size;
+}
 }

cli/cli_parser.hpp

@@ -59,6 +59,8 @@ class CLIParser
 
 	const char *next_string();
 
+	size_t next_size();
+
 	bool is_ended_state() const
 	{
 		return ended_state;