ff0b0b60a2
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TxCore/ECPG legacy 매입·정산 C 슬라이스(빌드검증) + Spring Boot 멀티모듈 골격(mvn test green) + MIGRATION.md 전환룰 + CI(boot 빌드).
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/*
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* util_amount.c - 금액/통화 유틸리티 (plain C)
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*/
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#include "acq_util.h"
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#include <string.h>
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#include <ctype.h>
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#include <stdio.h>
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/* 거래금액 상한 (원). 건당 1억원 */
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#define AMOUNT_MAX 100000000L
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long amount_parse(const char *field, int len)
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{
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long v = 0;
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int i;
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if (!field || len <= 0)
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return -1;
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for (i = 0; i < len; i++) {
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char c = field[i];
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if (c == ' ') /* 선행 공백 허용 */
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continue;
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if (!isdigit((unsigned char)c))
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return -1;
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v = v * 10 + (c - '0');
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}
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return v;
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}
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int amount_format(long amount, char *out, int len)
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{
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char tmp[32];
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int n;
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if (!out || len <= 0 || amount < 0)
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return -1;
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n = snprintf(tmp, sizeof(tmp), "%0*ld", len, amount);
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if (n < 0 || n > len) /* 폭 초과 = 오버플로우 */
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return -1;
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memcpy(out, tmp, len); /* 널 종료 없이 고정폭 복사 */
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return 0;
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}
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void amount_format_won(long amount, char *out, int outlen)
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{
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char raw[32];
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int n, i, j, digits, first;
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if (!out || outlen <= 0)
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return;
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n = snprintf(raw, sizeof(raw), "%ld", amount);
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if (n < 0) {
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out[0] = '\0';
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return;
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}
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first = (raw[0] == '-') ? 1 : 0;
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digits = n - first;
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j = 0;
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if (first && j < outlen - 1)
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out[j++] = '-';
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for (i = first; i < n && j < outlen - 1; i++) {
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int pos = i - first; /* 0-based 자릿수 위치 */
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if (pos > 0 && (digits - pos) % 3 == 0)
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if (j < outlen - 1)
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out[j++] = ',';
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out[j++] = raw[i];
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}
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out[j] = '\0';
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}
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int amount_is_valid(long amount)
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{
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return (amount >= 1 && amount <= AMOUNT_MAX) ? 1 : 0;
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}
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