mirror of https://github.com/postgres/postgres
to go out after all :(pull/19/head
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/*-------------------------------------------------------------------------
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*
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* sysfunc.c-- |
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* process system functions and return a string result |
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*
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* Notes: |
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* 1) I return a string result because most of the functions cannot return any |
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* normal type anyway (e.g. SYS_DATE, SYS_TIME, etc...), and the few that |
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* might (SYS_UID or whatever) can just return it as a string - no problem. |
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* This keeps the function flexible enough to be of good use. |
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*
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* Written by Chad Robinson, chadr@brttech.com |
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* Last modified: 04/27/1996 |
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* ------------------------------------------------------------------------- |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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/*
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* Can't get much more obvious than this. Might need to replace localtime() |
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* on older systems... |
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*/ |
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char *Sysfunc_system_date(void) |
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{ |
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time_t cur_time_secs; |
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struct tm *cur_time_expanded; |
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static char buf[12]; /* Just for safety, y'understand... */ |
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time(&cur_time_secs); |
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cur_time_expanded = localtime(&cur_time_secs); |
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sprintf(buf, "%02.2d-%02.2d-%04.4d", cur_time_expanded->tm_mon+1, |
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cur_time_expanded->tm_mday, cur_time_expanded->tm_year+1900); |
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return &buf[0]; |
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} |
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char *SystemFunctionHandler(char *funct) |
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{ |
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if (!strcmp(funct, "SYS_DATE")) |
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return Sysfunc_system_date(); |
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return "*unknown function*"; |
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} |
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#ifdef SYSFUNC_TEST |
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/*
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* Chad's rule of coding #4 - never delete a test function, even a stupid |
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* one - you always need it 10 minutes after you delete it. |
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*/ |
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void main(void) |
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{ |
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printf("Current system date: %s\n", SystemFunctionHandler("SYS_DATE")); |
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return; |
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} |
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#endif |
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/*-------------------------------------------------------------------------
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*
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* sysfunc.h-- |
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* support for system functions |
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*
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* ------------------------------------------------------------------------- |
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*/ |
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extern char *SystemFunctionHandler(char *funct); |
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