{"id":2184,"date":"2012-11-05T12:56:45","date_gmt":"2012-11-05T03:56:45","guid":{"rendered":"http:\/\/www.lancard.com\/blog\/?p=2184"},"modified":"2025-03-12T11:29:20","modified_gmt":"2025-03-12T02:29:20","slug":"opencobol%e3%81%a7%e4%bb%bb%e6%84%8f%e3%81%ae%e6%97%a5%e4%bb%98%e3%82%92%e8%bf%94%e3%81%99%e6%a9%9f%e8%83%bd%e8%bf%bd%e5%8a%a0","status":"publish","type":"post","link":"https:\/\/www.lancard.com\/blog\/2012\/11\/05\/opencobol%e3%81%a7%e4%bb%bb%e6%84%8f%e3%81%ae%e6%97%a5%e4%bb%98%e3%82%92%e8%bf%94%e3%81%99%e6%a9%9f%e8%83%bd%e8%bf%bd%e5%8a%a0\/","title":{"rendered":"OpenCOBOL\u3067\u4efb\u610f\u306e\u65e5\u4ed8\u3092\u8fd4\u3059\u6a5f\u80fd\u8ffd\u52a0"},"content":{"rendered":"

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\u5b9f\u969b\u306b\u3001\u6c4e\u7528\u6a5f\u306a\u3069\u3067\u306f\u540c\u69d8\u306e\u6a5f\u80fd\u3092\u6301\u3064\u7269\u304c\u3042\u308a\u3001JCL\u4e2d\u3067\u51e6\u7406DATE\u3092\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3068\u305d\u306e\u8a2d\u5b9a\u306b\u3057\u305f\u304c\u3063\u3066\u4ee5\u964d\u306e\u65e5\u4ed8\u51e6\u7406\u3092\u304a\u3053\u306a\u3063\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n

\u305d\u3053\u3067\u3001OpenCOBOL\u306b\u4efb\u610f\u306e\u65e5\u4ed8\u3092\u8fd4\u3059\u6a5f\u80fd\u3092\u8ffd\u52a0\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u30b3\u30fc\u30c9\u306e\u6982\u7565\u3068\u3057\u3066\u306f\u3001libc \u306e time\u95a2\u6570\u3092\u30d5\u30c3\u30af\u3057\u3066\u304a\u3044\u3066COB_DATE\u74b0\u5883\u5909\u6570\u306b\u5024\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u305f\u3089\u3053\u306e\u5024\u3092\u73fe\u5728\u65e5\u4ed8\u3068\u3057\u3066\u8fd4\u3059\u3068\u3044\u3046\u5185\u5bb9\u306b\u306a\u308a\u307e\u3059\u3002time\u95a2\u6570\u3092\u4f7f\u3063\u3066\u3044\u308b\u7b87\u6240\u304c libcob\u4e2d\u306b\u7d50\u69cb\u591a\u304f\u6563\u3089\u3070\u3063\u3066\u3044\u307e\u3059\u3057\u3001\u30b5\u30d6\u30eb\u30fc\u30c1\u30f3\u3067\u3082\u6709\u52b9\u306b\u52b9\u304b\u305b\u305f\u3044\u306e\u3067\u3053\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3092\u63a1\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\r\nstatic time_t (*time0)(time_t *t);\r\ntime_t time(time_t *t);\r\n\r\n#define COB_DATE_ENVNAME \"COB_DATE\"\r\ntime_t time(time_t *t)\r\n{\r\n    if (t == NULL && getenv(COB_DATE_ENVNAME)) {\r\n        char cob_date_envval[512];\r\n        long fake_t = 0; \r\n        struct tm tm;\r\n        strncpy(&cob_date_envval[0],\r\n            getenv(COB_DATE_ENVNAME),\r\n            sizeof(cob_date_envval));\r\n        fake_t = atol(&cob_date_envval[0]);\r\n        tm.tm_sec  = 0; \r\n        tm.tm_min  = 0; \r\n        tm.tm_hour = 0; \r\n        tm.tm_mday = fake_t % 100; \r\n        tm.tm_mon  = ((fake_t \/ 100) % 100) - 1; \r\n        tm.tm_year = fake_t \/ 10000 - 1900;\r\n        tm.tm_wday = 0; \r\n        tm.tm_yday = 0; \r\n        tm.tm_isdst   = 0; \r\n        \/* you must set validated value *\/\r\n        fake_t = (long)mktime(&tm);\r\n        return (time_t)fake_t; \r\n    }else{\r\n        return time0(t);\r\n    }    \r\n}\r\n\r\nint\r\nmain (int argc, char **argv)\r\n{\r\n    \/* \u7565 *\/\r\n    time0 = dlsym(RTLD_NEXT, \"time\");\r\n    \/* \u7565 *\/    \r\n}\r\n<\/pre>\n
\u4e0a\u8a18\u30b3\u30fc\u30c9\u3067\u306f\u5024\u306e\u30c1\u30a7\u30c3\u30af\u7b49\u8272\u3005\u3068\u30b5\u30dc\u3063\u3066\u3066\u8352\u3044\u306e\u3067\u3059\u304c\u3001\u3084\u308a\u305f\u3044\u5185\u5bb9\u306f\u3060\u3044\u305f\u3044\u4f1d\u308f\u308b\u3068\u601d\u3044\u307e\u3059\u3002COB_DATE\u74b0\u5883\u5909\u6570\u306b20121231\u7b49\u8a2d\u5b9a\u3057\u3066\u3042\u308b\u72b6\u614b\u3067\u4e0a\u8a18\u30b3\u30fc\u30c9\u304c\u8d70\u308b\u3068\u3001time\u95a2\u6570\u306f\u5e38\u306b 2012\u5e7412\u670831\u65e5 00\u664200\u520600\u79d2\u3092\u8fd4\u3057\u307e\u3059\u3002
\n\u3053\u308c\u3067\u5e74\u672b\u5e74\u59cb\u3067\u306e\u51e6\u7406\u3092\u5148\u306b\u691c\u8a3c\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u306d\u3002<\/p>\n\"Facebook\"<\/a>\"twitter\"<\/a>\"linkedin\"<\/a>\"tumblr\"<\/a>\"mail\"<\/a>","protected":false},"excerpt":{"rendered":"
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