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Diffstat (limited to 'notmuch-time.c')
| -rw-r--r-- | notmuch-time.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/notmuch-time.c b/notmuch-time.c new file mode 100644 index 00000000..de56db9e --- /dev/null +++ b/notmuch-time.c @@ -0,0 +1,137 @@ +/* notmuch - Not much of an email program, (just index and search) + * + * Copyright © 2009 Carl Worth + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see http://www.gnu.org/licenses/ . + * + * Author: Carl Worth <cworth@cworth.org> + */ + +#include "notmuch-client.h" + +/* Format a nice representation of 'time' relative to the current time. + * + * Examples include: + * + * 5 mins. ago (For times less than 60 minutes ago) + * Today 12:30 (For times >60 minutes but still today) + * Yest. 12:30 + * Mon. 12:30 (Before yesterday but fewer than 7 days ago) + * October 12 (Between 7 and 180 days ago (about 6 months)) + * 2008-06-30 (More than 180 days ago) + * + * The returned string is either static data (a string literal) or + * newly talloced data belonging to 'ctx'. That is, the caller should + * not modify nor free the returned value. But when the caller + * arranges for 'ctx' to be talloc_freed, then memory allocated here + * (if any) will be reclaimed. + * + */ +#define MINUTE (60) +#define HOUR (60 * MINUTE) +#define DAY (24 * HOUR) +#define RELATIVE_DATE_MAX 20 +const char * +notmuch_time_relative_date (void *ctx, time_t then) +{ + struct tm tm_now, tm_then; + time_t now = time(NULL); + time_t delta; + char *result; + + localtime_r (&now, &tm_now); + localtime_r (&then, &tm_then); + + result = talloc_zero_size (ctx, RELATIVE_DATE_MAX); + if (result == NULL) + return "when?"; + + if (then > now) + return "the future"; + + delta = now - then; + + if (delta > 180 * DAY) { + strftime (result, RELATIVE_DATE_MAX, + "%F", &tm_then); /* 2008-06-30 */ + return result; + } + + if (delta < 3600) { + snprintf (result, RELATIVE_DATE_MAX, + "%d mins. ago", (int) (delta / 60)); + return result; + } + + if (delta <= 7 * DAY) { + if (tm_then.tm_wday == tm_now.tm_wday && + delta < DAY) + { + strftime (result, RELATIVE_DATE_MAX, + "Today %R", &tm_then); /* Today 12:30 */ + return result; + } else if ((tm_now.tm_wday + 7 - tm_then.tm_wday) % 7 == 1) { + strftime (result, RELATIVE_DATE_MAX, + "Yest. %R", &tm_then); /* Yest. 12:30 */ + return result; + } else { + if (tm_then.tm_wday != tm_now.tm_wday) { + strftime (result, RELATIVE_DATE_MAX, + "%a. %R", &tm_then); /* Mon. 12:30 */ + return result; + } + } + } + + strftime (result, RELATIVE_DATE_MAX, + "%B %d", &tm_then); /* October 12 */ + return result; +} +#undef MINUTE +#undef HOUR +#undef DAY + +void +notmuch_time_print_formatted_seconds (double seconds) +{ + int hours; + int minutes; + + if (seconds < 1) { + printf ("almost no time"); + return; + } + + if (seconds > 3600) { + hours = (int) seconds / 3600; + printf ("%dh ", hours); + seconds -= hours * 3600; + } + + if (seconds > 60) { + minutes = (int) seconds / 60; + printf ("%dm ", minutes); + seconds -= minutes * 60; + } + + printf ("%ds", (int) seconds); +} + +/* Compute the number of seconds elapsed from start to end. */ +double +notmuch_time_elapsed (struct timeval start, struct timeval end) +{ + return ((end.tv_sec - start.tv_sec) + + (end.tv_usec - start.tv_usec) / 1e6); +} |