1 files changed, 42 insertions, 0 deletions
diff --git a/system/lib/libc/musl/src/string/strverscmp.c b/system/lib/libc/musl/src/string/strverscmp.c
new file mode 100644
index 00000000..94d2e15c
--- /dev/null
+++ b/system/lib/libc/musl/src/string/strverscmp.c
@@ -0,0 +1,42 @@
+#define _GNU_SOURCE
+#include <ctype.h>
+#include <string.h>
+#include <sys/types.h>
+
+int strverscmp(const char *l, const char *r)
+{
+	int haszero=1;
+	while (*l==*r) {
+		if (!*l) return 0;
+
+		if (*l=='0') {
+			if (haszero==1) {
+				haszero=0;
+			}
+		} else if (isdigit(*l)) {
+			if (haszero==1) {
+				haszero=2;
+			}
+		} else {
+			haszero=1;
+		}
+		l++; r++;
+	}
+	if (haszero==1 && (*l=='0' || *r=='0')) {
+		haszero=0;
+	}
+	if ((isdigit(*l) && isdigit(*r) ) && haszero) {
+		size_t lenl=0, lenr=0;
+		while (isdigit(l[lenl]) ) lenl++;
+		while (isdigit(r[lenr]) ) lenr++;
+		if (lenl==lenr) {
+			return (*l -  *r);
+		} else if (lenl>lenr) {
+			return 1;
+		} else {
+			return -1;
+		}
+	} else {
+		return (*l -  *r);
+	}
+}