feat: acquire-core full legacy C corpus (~2066 files, build-verified) + generator + inventory

app/shared/include/acq_util.h

@@ -0,0 +1,27 @@
+/*
+ * acq_util.h - 공통 유틸리티 (일자/금액/전문) 선언 (공유)
+ */
+#ifndef ACQ_UTIL_H
+#define ACQ_UTIL_H
+
+#include "msg_layout.h"
+
+int  date_is_valid(const char *yyyymmdd);
+int  date_weekday(const char *yyyymmdd);
+int  date_is_weekend(const char *yyyymmdd);
+int  date_next_business(const char *yyyymmdd, char *out);
+void date_today(char *out);
+
+long amount_parse(const char *field, int len);
+int  amount_format(long amount, char *out, int len);
+void amount_format_won(long amount, char *out, int outlen);
+int  amount_is_valid(long amount);
+
+void msg_field_copy(char *out, const char *field, int len);
+void msg_field_set(char *field, const char *src, int len);
+void msg_field_set_num(char *field, const char *src, int len);
+int  msg_unpack(acq_msg_t *msg, const char *raw, int rawlen);
+int  msg_pack(const acq_msg_t *msg, char *raw, int rawlen);
+int  msg_validate(const acq_msg_t *msg);
+
+#endif /* ACQ_UTIL_H */

app/shared/include/msg_layout.h

@@ -0,0 +1,43 @@
+/*
+ * msg_layout.h - 카드 매입 전문(電文) 고정길이 레이아웃 (공유)
+ */
+#ifndef MSG_LAYOUT_H
+#define MSG_LAYOUT_H
+
+#define MSG_TYPE_RECV   "0200"
+#define MSG_TYPE_RESP   "0210"
+#define MSG_TYPE_RECON  "0500"
+
+#define RESP_OK         "0000"
+#define RESP_INVALID    "9001"
+#define RESP_NOMERCH    "9002"
+#define RESP_SYSERR     "9999"
+
+typedef struct {
+    char msg_type[4];
+    char trans_code[6];
+    char merch_id[15];
+    char card_no[16];
+    char approval_no[9];
+    char amount[12];
+    char txn_date[8];
+    char txn_time[6];
+    char inst_month[2];
+    char resp_code[4];
+    char filler[18];
+} acq_msg_t;
+
+#define MSG_ACQ_LEN   ((int)sizeof(acq_msg_t))
+
+#define FLD_MSG_TYPE_LEN   4
+#define FLD_TRANS_CODE_LEN 6
+#define FLD_MERCH_ID_LEN   15
+#define FLD_CARD_NO_LEN    16
+#define FLD_APPROVAL_LEN   9
+#define FLD_AMOUNT_LEN     12
+#define FLD_TXN_DATE_LEN   8
+#define FLD_TXN_TIME_LEN   6
+#define FLD_INST_LEN       2
+#define FLD_RESP_LEN       4
+
+#endif /* MSG_LAYOUT_H */