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1 <?php
2 //$Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/webprojs/fboprime/sw/phplib/utimex.inc,v 1.3 2006/09/25 21:11:28 dashley Exp $
3 //
4 //utimex.inc--UTIME-related functions that are not needed by the dayview
5 // scheduler.
6 //********************************************************************************
7 //Copyright (C)2006 David T. Ashley
8 //********************************************************************************
9 //This program or source file is free software; you can redistribute it and/or
10 //modify it under the terms of the GNU General Public License as published by
11 //the Free Software Foundation; either version 2 of the License, or (at your
12 //option) any later version.
13 //
14 //This program or source file is distributed in the hope that it will
15 //be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
17 //GNU General Public License for more details.
18 //
19 //You may have received a copy of the GNU General Public License
20 //along with this program; if not, write to the Free Software
21 //Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 //********************************************************************************
23 //Dave Ashley, 05/06
24 //-------------------------------------------------------------------------------------------------
25 //Copyright 2006 David T. Ashley
26 //-------------------------------------------------------------------------------------------------
27 //This source code and any program in which it is compiled/used is provided under the GNU GENERAL
28 //PUBLIC LICENSE, Version 3, full license text below.
29 //-------------------------------------------------------------------------------------------------
31 // Version 3, 29 June 2007
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576 //not convey it at all. For example, if you agree to terms that obligate you
577 //to collect a royalty for further conveying from those to whom you convey
578 //the Program, the only way you could satisfy both those terms and this
579 //License would be to refrain entirely from conveying the Program.
580 //
581 // 13. Use with the GNU Affero General Public License.
582 //
583 // Notwithstanding any other provision of this License, you have
584 //permission to link or combine any covered work with a work licensed
585 //under version 3 of the GNU Affero General Public License into a single
586 //combined work, and to convey the resulting work. The terms of this
587 //License will continue to apply to the part which is the covered work,
588 //but the special requirements of the GNU Affero General Public License,
589 //section 13, concerning interaction through a network will apply to the
590 //combination as such.
591 //
592 // 14. Revised Versions of this License.
593 //
594 // The Free Software Foundation may publish revised and/or new versions of
595 //the GNU General Public License from time to time. Such new versions will
596 //be similar in spirit to the present version, but may differ in detail to
597 //address new problems or concerns.
598 //
599 // Each version is given a distinguishing version number. If the
600 //Program specifies that a certain numbered version of the GNU General
601 //Public License "or any later version" applies to it, you have the
602 //option of following the terms and conditions either of that numbered
603 //version or of any later version published by the Free Software
604 //Foundation. If the Program does not specify a version number of the
605 //GNU General Public License, you may choose any version ever published
606 //by the Free Software Foundation.
607 //
608 // If the Program specifies that a proxy can decide which future
609 //versions of the GNU General Public License can be used, that proxy's
610 //public statement of acceptance of a version permanently authorizes you
611 //to choose that version for the Program.
612 //
613 // Later license versions may give you additional or different
614 //permissions. However, no additional obligations are imposed on any
615 //author or copyright holder as a result of your choosing to follow a
616 //later version.
617 //
618 // 15. Disclaimer of Warranty.
619 //
628 //
629 // 16. Limitation of Liability.
630 //
640 //
641 // 17. Interpretation of Sections 15 and 16.
642 //
643 // If the disclaimer of warranty and limitation of liability provided
644 //above cannot be given local legal effect according to their terms,
645 //reviewing courts shall apply local law that most closely approximates
646 //an absolute waiver of all civil liability in connection with the
647 //Program, unless a warranty or assumption of liability accompanies a
648 //copy of the Program in return for a fee.
649 //
651 //
652 // How to Apply These Terms to Your New Programs
653 //
654 // If you develop a new program, and you want it to be of the greatest
655 //possible use to the public, the best way to achieve this is to make it
656 //free software which everyone can redistribute and change under these terms.
657 //
658 // To do so, attach the following notices to the program. It is safest
659 //to attach them to the start of each source file to most effectively
660 //state the exclusion of warranty; and each file should have at least
661 //the "copyright" line and a pointer to where the full notice is found.
662 //
663 // <one line to give the program's name and a brief idea of what it does.>
664 // Copyright (C) <year> <name of author>
665 //
666 // This program is free software: you can redistribute it and/or modify
667 // it under the terms of the GNU General Public License as published by
668 // the Free Software Foundation, either version 3 of the License, or
669 // (at your option) any later version.
670 //
671 // This program is distributed in the hope that it will be useful,
672 // but WITHOUT ANY WARRANTY; without even the implied warranty of
674 // GNU General Public License for more details.
675 //
676 // You should have received a copy of the GNU General Public License
677 // along with this program. If not, see <http://www.gnu.org/licenses/>.
678 //
679 //Also add information on how to contact you by electronic and paper mail.
680 //
681 // If the program does terminal interaction, make it output a short
682 //notice like this when it starts in an interactive mode:
683 //
684 // <program> Copyright (C) <year> <name of author>
685 // This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
686 // This is free software, and you are welcome to redistribute it
687 // under certain conditions; type `show c' for details.
688 //
689 //The hypothetical commands `show w' and `show c' should show the appropriate
690 //parts of the General Public License. Of course, your program's commands
691 //might be different; for a GUI interface, you would use an "about box".
692 //
693 // You should also get your employer (if you work as a programmer) or school,
694 //if any, to sign a "copyright disclaimer" for the program, if necessary.
695 //For more information on this, and how to apply and follow the GNU GPL, see
696 //<http://www.gnu.org/licenses/>.
697 //
698 // The GNU General Public License does not permit incorporating your program
699 //into proprietary programs. If your program is a subroutine library, you
700 //may consider it more useful to permit linking proprietary applications with
701 //the library. If this is what you want to do, use the GNU Lesser General
702 //Public License instead of this License. But first, please read
703 //<http://www.gnu.org/philosophy/why-not-lgpl.html>.
704 //-------------------------------------------------------------------------------------------------
705 //
706 //This source file contains Unix time functions.
707 //
708 require_once("strfunc.inc"); //Necessary to left-zero pad string representations of integers
709 require_once("timeraw.inc"); //Raw time acquisition.
710 //
711 //--------------------------------------------------------------------------------
712 //Returns a UTIME corresponding to the time (in a coarse sense, meaning that
713 //fractional seconds are ignored) a certain integer number of seconds offset from
714 //The minimum and maximum values of the UTIME are used as the floor and ceiling
715 //limits of the result.
716 //
717 function UTIME_time_offset_coarse($ut_in, $offset_in)
718 {
719 //Extract the integer seconds string.
720 $int_secs_string = SubStr($ut_in, 2, 11);
722 //Strip off any leading zeros.
723 while ((strlen($int_secs_string) > 1) && (SubStr($int_secs_string, 0, 1) == "0"))
724 $int_secs_string = SubStr($int_secs_string, 1);
726 //Form an integer result that is offset from this integer by the passed
727 //value.
728 $offset_time = bcadd($int_secs_string, (string)$offset_in);
730 //Apply the floor and ceiling.
731 if (bccomp($offset_time, "0") == -1)
732 {
733 //Result is below the Unix epoch. Apply floor.
734 //
735 return("UT00000000000000000000");
736 }
737 else if (bccomp($offset_time, "99999999999") == 1)
738 {
739 //Result is above the max value that can be represented. Apply ceiling.
740 //
741 return("UT99999999999000000000");
742 }
743 else
744 {
745 //Result is valid. Format the string and return.
746 $offset_time = (string)$offset_time;
747 //
748 $offset_time = STRFUNC_pad_left_zero($offset_time, 11);
749 return("UT" . $offset_time . "000000000");
750 }
751 }
752 //
753 //--------------------------------------------------------------------------------
754 //Reformats an UTIME string to include dots at strategic places for more
755 //human-friendly display.
756 //
757 function UTIME_dotted_display_string_a($utime_in)
758 {
759 if (! is_string($utime_in))
760 {
761 //Don't know what this is ... it isn't an utime. Just send it back.
762 return($utime_in);
763 }
764 else if (strlen($utime_in) != 22)
765 {
766 //This doesn't seem to be the right length for an utime. Give it back.
767 return($utime_in);
768 }
769 else
770 {
771 //Seems right.
772 return(
773 SubStr($utime_in, 0, 2)
774 .
775 "."
776 .
777 SubStr($utime_in, 2, 11)
778 .
779 "."
780 .
781 SubStr($utime_in, 13, 9)
782 );
783 }
784 }
785 //
786 //--------------------------------------------------------------------------------
787 //End of $RCSfile: utimex.inc,v $.
788 //--------------------------------------------------------------------------------
789 ?>

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