106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
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/*
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* datestrconv.c - convert string to time and time to string
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*
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* include LICENSE
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*
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*/
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#define _XOPEN_SOURCE
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#include <datestrconv.h>
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#include <duprintf.h>
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char *deffmt = "%d-%m-%Y %H:%M:%S";
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/*
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* convert a data time string to time_t
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* ex: "27 1 2016 0:02:24" -> 1401197380
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* *str_time must freed by caller if used.
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*/
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void
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convert_datestr(char *datestr, char *fmt, time_t *int_time, char **str_time )
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{
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struct tm tm;
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time_t mytime;
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char *format = deffmt;
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if ( fmt ){
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format = fmt;
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}
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memset(&tm, 0, sizeof(struct tm));
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if ( strptime( datestr, format, &tm) == NULL ){
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fprintf(stderr, "Bad format: \"%s\" expected \"%s\"\n", datestr, format );
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}
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tm.tm_isdst = -1;
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mytime = mktime(&tm);
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if ( int_time ){
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*int_time = mytime;
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}
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if ( str_time ){
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*str_time = app_strdup_printf("%lu", (unsigned long) mytime );
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}
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#ifdef HQDEBUG
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if ( prog_debug ){
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char buf[255];
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strftime(buf, sizeof(buf), format, &tm);
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fprintf(stderr, "\"%s\" converted to \"%s\"\n", datestr, buf );
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struct tm *ptm;
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ptm = localtime(&mytime);
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strftime(buf, sizeof(buf), format, ptm);
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fprintf(stderr, "Result for %lu is \"%s\"\n", (unsigned long) mytime, buf );
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}
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#endif
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}
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/*
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* time_t to date
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* -cd 1418979685
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* -cd 0x547BA1A2
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*/
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void convert_time_t_to_date( time_t mytime, char *fmt, char *buf, int buflen )
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{
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struct tm *ptm;
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char *format = deffmt;
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if ( fmt ){
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format = fmt;
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}
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ptm = localtime(&mytime);
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strftime(buf, buflen, format, ptm);
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#ifdef HQDEBUG
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if ( prog_debug ){
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fprintf(stderr, "%lu -> 0x%lX -> \"%s\"\n",
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(unsigned long) mytime, (unsigned long) mytime, buf );
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}
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#endif
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}
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void convert_string_to_date( char *arg, char *fmt, char *buf, int buflen )
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{
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time_t mytime;
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mytime = strtoul(arg, NULL, 0);
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convert_time_t_to_date( mytime, fmt, buf, buflen );
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}
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/*
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* convert a time_t representing a diff between 2 dates
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* to a string
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*/
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void convert_difftime_str( time_t mytime, char *fmt, char *buf, int buflen )
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{
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int days = mytime / (24 * 3600);
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mytime = mytime % (24 * 3600);
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int hours = mytime / 3600;
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mytime = mytime % 3600;
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int mins = mytime / 60;
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int secs = mytime % 60;
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snprintf( buf, buflen, fmt, days, hours, mins, secs );
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}
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