1 files changed, 29 insertions, 0 deletions
diff --git a/util/arid.cpp b/util/arid.cpp
new file mode 100644
index 000000000..ab2bccb60
--- /dev/null
+++ b/util/arid.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+#include "minimal/mapping.h"
+
+struct ar_hdr {
+    char ar_name[16];
+    char ar_date[12];
+    char ar_uid[6];
+    char ar_gid[6];
+    char ar_mode[8];
+    char ar_size[10];
+#define	ARFMAG "`\n"
+    char ar_fmag[2];
+};
+
+int main(int argc, char *argv[]) {
+    size_t size;
+    _assert(argc == 2);
+    uint8_t *data = reinterpret_cast<uint8_t *>(map(argv[1], 0, _not(size_t), &size, false));
+    data += 8;
+    uint8_t *end = data + size;
+    while (end - data >= sizeof(struct ar_hdr)) {
+        struct ar_hdr *head = reinterpret_cast<struct ar_hdr *>(data);
+        memset(head->ar_date + 1, ' ', sizeof(head->ar_date) - 1);
+        head->ar_date[0] = '0';
+        size_t length = strtoul(head->ar_size, NULL, 10);
+        data += length + sizeof(struct ar_hdr);
+    }
+    return 0;
+}