X-Git-Url: https://jasonwoof.com/gitweb/?p=wfpl.git;a=blobdiff_plain;f=time.php;h=9aa479dd5ebb3b280ffb83cae8298080ae1737ac;hp=4c6b1f17e84cdfbe45f49b86f6b9cbcb3c2cc975;hb=HEAD;hpb=856f805c6cbb6e712c662214f3b5821442f808a0

diff --git a/time.php b/time.php
index 4c6b1f1..9aa479d 100644
--- a/time.php
+++ b/time.php
@@ -1,25 +1,20 @@
 <?php
 
-#  Copyright (C) 2007 Jason Woofenden
-#
-#  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/>.
+# This program is in the public domain within the United States. Additionally,
+# we waive copyright and related rights in the work worldwide through the CC0
+# 1.0 Universal public domain dedication, which can be found at
+# http://creativecommons.org/publicdomain/zero/1.0/
 
 
 # This file contains functions to manipulate/calculate dates/times
 
+# argument in format: YYYY-MM-DD
+function yyyymmdd_to_days($str) {
+	return ymd_to_days((int)substr($str, 0, 4), (int)substr($str, 5, 2), (int)substr($str, 8, 2));
+}
+# args must be integers
 function ymd_to_days($year, $month, $day) {
-	return (int)(mktime(12,0,0,$month,$day, $year, 0) / 86400);
+	return (int)(mktime(12,0,0,$month,$day, $year) / 86400);
 }
 
 function days_to_ymd($days) {
@@ -62,18 +57,21 @@ function clean_ymd($year, $month, $day) {
 	}
 	if($day < 1) {
 		$day = 1;
-	} elseif($day > 31) {
-		# FIXME this should check the month
-		$day = 31;
+	} else {
+		$max = date('t', mktime(12, 0, 0, $month, 1, $year));
+		if($day > $max) {
+			$day = $max;
+		}
 	}
 
 	return array($year, $month, $day);
 }
 
-# convert date string from mm/dd/yyyy to yyyy-mm-dd
-function mdy_to_ymd($date) {
-	$date = ereg_replace('[^0-9/-]', '', $date);
-	$date = ereg_replace('-', '/', $date);
+# pass date like 3/21/99
+# returns array(year, month, day)
+function mdy_clean($date) {
+	$date = preg_replace('|[^0-9/-]|', '', $date);
+	$date = preg_replace('|-|', '/', $date);
 	$parts = explode('/', $date);
 	switch(count($parts)) {
 		case 1:
@@ -92,20 +90,25 @@ function mdy_to_ymd($date) {
 			list($month, $day, $year) = $parts;
 	}
 
-	list($year, $month, $day) = clean_ymd($year, $month, $day);
+	return clean_ymd($year, $month, $day);
+}
 
+# convert date string from mm/dd/yyyy to yyyy-mm-dd
+function mdy_to_ymd($date) {
+	list($year, $month, $day) = mdy_clean($date);
 	return sprintf('%04u-%02u-%02u', $year, $month, $day);
 }
 
-# convert date string from yyy-mm-dd to mm/dd/yyyy
-function ymd_to_mdy($date) {
-	$date = ereg_replace('[^0-9/-]', '', $date);
-	$date = ereg_replace('/', '-', $date);
+# pass date like 2008-11-21
+# returns array(year, month, day)
+function ymd_clean($date) {
+	$date = preg_replace('|[^0-9/-]|', '', $date);
+	$date = preg_replace('|/|', '-', $date);
 	$parts = explode('-', $date);
 	switch(count($parts)) {
 		case 1:
 			$year = $parts[0];
-			if(strlen($year) == 0) {
+			if(strlen($year) == 0 || $year < 1971 || $year > 2050) {
 				list($year, $month, $day) = explode('-', date('Y-m-d'));
 			} else {
 				list($month, $day) = explode('-', date('m-d'));
@@ -119,13 +122,11 @@ function ymd_to_mdy($date) {
 			list($year, $month, $day) = $parts;
 	}
 
-	list($year, $month, $day) = clean_ymd($year, $month, $day);
-
-	return sprintf('%02u/%02u/%04u', $month, $day, $year);
+	return clean_ymd($year, $month, $day);
 }
 
-function enc_mdy($date) {
-	return ymd_to_mdy($date);
+# convert date string from yyyy-mm-dd to mm/dd/yyyy
+function ymd_to_mdy($str) {
+	list($year, $month, $day) = ymd_clean($str);
+	return sprintf('%02u/%02u/%04u', $month, $day, $year);
 }
-
-?>