1 files changed, 47 insertions, 0 deletions
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..44d8a96
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,47 @@
+/*
+	Copyright 2022-2023 Gabriel Jensen.
+
+	This file is part of agbsum.
+	agbsum is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+	agbsum is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
+	You should have received a copy of the GNU Affero General Public License along with agbsum. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <agbsum.h>
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#if CHAR_BIT != 0x8
+#error "agbsum only support 8-bit byte systems"
+#endif
+
+int main (int const argc, char const* const* const argv)
+{
+	agb_dat dat;
+
+	agb_inidat (&dat);
+
+	agb_chkpar (&dat, argc, argv);
+
+	dat.rom = agb_opn (dat.pth);
+
+	unsigned char buf[agb_chksumoff+0x1u];
+
+	agb_red (buf, dat.rom);
+
+	unsigned char const chksum    = agb_getsum (buf);
+	unsigned char const romchksum = buf[agb_chksumoff];
+
+	if (romchksum == chksum || !dat.dopat) {
+		if (!dat.sil) {printf ("\"%s\": %hhX (%hhX in file)\n", dat.pth, chksum, romchksum);}
+		agb_exi (agb_cnd_oky, dat.rom);
+	}
+
+	agb_pat (dat.rom, chksum);
+
+	if (!dat.sil) {printf ("\"%s\" @ %zX: %hhX => %hhX\n", dat.pth, agb_romsrt+agb_chksumoff, romchksum, chksum);}
+
+	agb_exi (agb_cnd_oky, dat.rom);
+}