/* Time formatting functions Copyright (C) 1994-2016 Free Software Foundation, Inc. Written by: Miguel de Icaza, 1994, 1995, 1996 Janne Kukonlehto, 1994, 1995, 1996 Dugan Porter, 1994, 1995, 1996 Jakub Jelinek, 1994, 1995, 1996 Mauricio Plaza, 1994, 1995, 1996 The file_date routine is mostly from GNU's fileutils package, written by Richard Stallman and David MacKenzie. This file is part of the Midnight Commander. The Midnight Commander 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. The Midnight Commander 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 . */ /** \file * \brief Source: time formatting functions */ #include #include #include "lib/global.h" #include "lib/strutil.h" #include "lib/timefmt.h" /*** global variables ****************************************************************************/ char *user_recent_timeformat = NULL; /* time format string for recent dates */ char *user_old_timeformat = NULL; /* time format string for older dates */ /*** file scope macro definitions ****************************************************************/ /*** file scope type declarations ****************************************************************/ /*** file scope variables ************************************************************************/ /* * Cache variable for the i18n_checktimelength function, * initially set to a clearly invalid value to show that * it hasn't been initialized yet. */ static size_t i18n_timelength_cache = MAX_I18NTIMELENGTH + 1; /*** file scope functions ************************************************************************/ /*** public functions ****************************************************************************/ /* --------------------------------------------------------------------------------------------- */ /** * Check strftime() results. Some systems (i.e. Solaris) have different * short-month and month name sizes for different locales */ size_t i18n_checktimelength (void) { size_t length = 0; time_t testtime; struct tm *lt; if (i18n_timelength_cache <= MAX_I18NTIMELENGTH) return i18n_timelength_cache; testtime = time (NULL); lt = localtime (&testtime); if (lt == NULL) { /* huh, localtime() doesnt seem to work ... falling back to "(invalid)" */ length = str_term_width1 (_(INVALID_TIME_TEXT)); } else { char buf[MB_LEN_MAX * MAX_I18NTIMELENGTH + 1]; size_t tlen; /* We are interested in the longest possible date */ lt->tm_sec = lt->tm_min = lt->tm_hour = lt->tm_mday = 10; /* Loop through all months to find out the longest one */ for (lt->tm_mon = 0; lt->tm_mon < 12; lt->tm_mon++) { strftime (buf, sizeof (buf) - 1, user_recent_timeformat, lt); tlen = (size_t) str_term_width1 (buf); length = max (tlen, length); strftime (buf, sizeof (buf) - 1, user_old_timeformat, lt); tlen = (size_t) str_term_width1 (buf); length = max (tlen, length); } tlen = (size_t) str_term_width1 (_(INVALID_TIME_TEXT)); length = max (tlen, length); } /* Don't handle big differences. Use standard value (email bug, please) */ if (length > MAX_I18NTIMELENGTH || length < MIN_I18NTIMELENGTH) length = STD_I18NTIMELENGTH; /* Save obtained value to the cache */ i18n_timelength_cache = length; return i18n_timelength_cache; } /* --------------------------------------------------------------------------------------------- */ const char * file_date (time_t when) { static char timebuf[MB_LEN_MAX * MAX_I18NTIMELENGTH + 1]; time_t current_time = time (NULL); const char *fmt; if (current_time > when + 6L * 30L * 24L * 60L * 60L /* Old. */ || current_time < when - 60L * 60L) /* In the future. */ /* The file is fairly old or in the future. POSIX says the cutoff is 6 months old; approximate this by 6*30 days. Allow a 1 hour slop factor for what is considered "the future", to allow for NFS server/client clock disagreement. Show the year instead of the time of day. */ fmt = user_old_timeformat; else fmt = user_recent_timeformat; FMT_LOCALTIME (timebuf, sizeof (timebuf), fmt, when); return timebuf; } /* --------------------------------------------------------------------------------------------- */