Diffstat (limited to 'libical/src/libical/icalduration.c') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | libical/src/libical/icalduration.c | 89 |
1 files changed, 49 insertions, 40 deletions
diff --git a/libical/src/libical/icalduration.c b/libical/src/libical/icalduration.c index 4468e0f..821a3b7 100644 --- a/libical/src/libical/icalduration.c +++ b/libical/src/libical/icalduration.c @@ -1,323 +1,332 @@ /* -*- Mode: C -*- ====================================================================== FILE: icaltime.c CREATOR: eric 02 June 2000 $Id$ $Locker$ (C) COPYRIGHT 2000, Eric Busboom, http://www.softwarestudio.org This program is free software; you can redistribute it and/or modify it under the terms of either: The LGPL as published by the Free Software Foundation, version 2.1, available at: http://www.fsf.org/copyleft/lesser.html Or: The Mozilla Public License Version 1.0. You may obtain a copy of the License at http://www.mozilla.org/MPL/ The Original Code is eric. The Initial Developer of the Original Code is Eric Busboom ======================================================================*/ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "icalduration.h" #include <assert.h> #include <string.h> #include <stdlib.h> #include <stdio.h> -#ifdef ICAL_NO_LIBICAL -#define icalerror_set_errno(x) -#define icalerror_check_arg_rv(x,y) -#define icalerror_check_arg_re(x,y,z) -#else #include "icalerror.h" #include "icalmemory.h" -#endif +#include "icalvalue.h" /* From Seth Alves, <alves@hungry.com> */ struct icaldurationtype icaldurationtype_from_int(int t) { - struct icaldurationtype dur; - int used = 0; - - dur = icaldurationtype_null_duration(); - - if(t < 0){ - dur.is_neg = 1; - t = -t; - } - - if (t % (60 * 60 * 24 * 7) == 0) { - dur.weeks = t / (60 * 60 * 24 * 7); - } else { - used += dur.weeks * (60 * 60 * 24 * 7); - dur.days = (t - used) / (60 * 60 * 24); - used += dur.days * (60 * 60 * 24); - dur.hours = (t - used) / (60 * 60); - used += dur.hours * (60 * 60); - dur.minutes = (t - used) / (60); - used += dur.minutes * (60); - dur.seconds = (t - used); - } + struct icaldurationtype dur; + int used = 0; + + dur = icaldurationtype_null_duration(); + + if(t < 0){ + dur.is_neg = 1; + t = -t; + } + + if (t % (60 * 60 * 24 * 7) == 0) { + dur.weeks = t / (60 * 60 * 24 * 7); + } else { + used += dur.weeks * (60 * 60 * 24 * 7); + dur.days = (t - used) / (60 * 60 * 24); + used += dur.days * (60 * 60 * 24); + dur.hours = (t - used) / (60 * 60); + used += dur.hours * (60 * 60); + dur.minutes = (t - used) / (60); + used += dur.minutes * (60); + dur.seconds = (t - used); + } - return dur; + return dur; } -#ifndef ICAL_NO_LIBICAL -#include "icalvalue.h" struct icaldurationtype icaldurationtype_from_string(const char* str) { int i; int begin_flag = 0; int time_flag = 0; int date_flag = 0; int week_flag = 0; int digits=-1; int scan_size = -1; int size = strlen(str); char p; struct icaldurationtype d; memset(&d, 0, sizeof(struct icaldurationtype)); for(i=0;i != size;i++){ p = str[i]; switch(p) { case '-': { if(i != 0 || begin_flag == 1) goto error; d.is_neg = 1; break; } case 'P': { if (i != 0 && i !=1 ) goto error; begin_flag = 1; break; } case 'T': { time_flag = 1; break; } case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': { /* HACK. Skip any more digits if the l;ast one read has not been assigned */ if(digits != -1){ break; } if (begin_flag == 0) goto error; /* Get all of the digits, not one at a time */ - scan_size = sscanf((char*)(str+i),"%d",&digits); + scan_size = sscanf(&str[i],"%d",&digits); if(scan_size == 0) goto error; break; } case 'H': { if (time_flag == 0||week_flag == 1||d.hours !=0||digits ==-1) goto error; d.hours = digits; digits = -1; break; } case 'M': { if (time_flag == 0||week_flag==1||d.minutes != 0||digits ==-1) goto error; d.minutes = digits; digits = -1; break; } case 'S': { if (time_flag == 0||week_flag==1||d.seconds!=0||digits ==-1) goto error; d.seconds = digits; digits = -1; break; } case 'W': { if (time_flag==1||date_flag==1||d.weeks!=0||digits ==-1) goto error; week_flag = 1; d.weeks = digits; digits = -1; break; } case 'D': { if (time_flag==1||week_flag==1||d.days!=0||digits ==-1) goto error; date_flag = 1; d.days = digits; digits = -1; break; } default: { goto error; } } } return d; error: icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR); - memset(&d, 0, sizeof(struct icaldurationtype)); - return d; - + return icaldurationtype_bad_duration(); } #define TMP_BUF_SIZE 1024 +static void append_duration_segment(char** buf, char** buf_ptr, size_t* buf_size, char* sep, unsigned int value) { char temp[TMP_BUF_SIZE]; sprintf(temp,"%d",value); icalmemory_append_string(buf, buf_ptr, buf_size, temp); icalmemory_append_string(buf, buf_ptr, buf_size, sep); } char* icaldurationtype_as_ical_string(struct icaldurationtype d) { char *buf, *output_line; size_t buf_size = 256; char* buf_ptr = 0; int seconds; buf = (char*)icalmemory_new_buffer(buf_size); buf_ptr = buf; seconds = icaldurationtype_as_int(d); if(seconds !=0){ if(d.is_neg == 1){ icalmemory_append_char(&buf, &buf_ptr, &buf_size, '-'); } icalmemory_append_char(&buf, &buf_ptr, &buf_size, 'P'); if (d.weeks != 0 ) { append_duration_segment(&buf, &buf_ptr, &buf_size, "W", d.weeks); } if (d.days != 0 ) { append_duration_segment(&buf, &buf_ptr, &buf_size, "D", d.days); } if (d.hours != 0 || d.minutes != 0 || d.seconds != 0) { icalmemory_append_string(&buf, &buf_ptr, &buf_size, "T"); if (d.hours != 0 ) { append_duration_segment(&buf, &buf_ptr, &buf_size, "H", d.hours); } if (d.minutes != 0 ) { append_duration_segment(&buf, &buf_ptr, &buf_size, "M", d.minutes); } if (d.seconds != 0 ) { append_duration_segment(&buf, &buf_ptr, &buf_size, "S", d.seconds); } } } else { - icalmemory_append_string(&buf, &buf_ptr, &buf_size, "PTS0"); + icalmemory_append_string(&buf, &buf_ptr, &buf_size, "PT0S"); } output_line = icalmemory_tmp_copy(buf); icalmemory_free_buffer(buf); return output_line; } -#endif - /* From Russel Steinthal */ int icaldurationtype_as_int(struct icaldurationtype dur) { return (int)( (dur.seconds + (60 * dur.minutes) + (60 * 60 * dur.hours) + (60 * 60 * 24 * dur.days) + (60 * 60 * 24 * 7 * dur.weeks)) * (dur.is_neg==1? -1 : 1) ) ; } -struct icaldurationtype icaldurationtype_null_duration() +struct icaldurationtype icaldurationtype_null_duration(void) { struct icaldurationtype d; memset(&d,0,sizeof(struct icaldurationtype)); return d; } int icaldurationtype_is_null_duration(struct icaldurationtype d) { if(icaldurationtype_as_int(d) == 0){ return 1; } else { return 0; } } +/* in icalvalue_new_from_string_with_error, we should not call + icaldurationtype_is_null_duration() to see if there is an error + condition. Null duration is perfectly valid for an alarm. + We cannot depend on the caller to check icalerrno either, + following the philosophy of unix errno. we set the is_neg + to -1 to indicate that this is a bad duration. +*/ +struct icaldurationtype icaldurationtype_bad_duration() +{ + struct icaldurationtype d; + memset(&d,0,sizeof(struct icaldurationtype)); + d.is_neg = -1; + return d; +} + +int icaldurationtype_is_bad_duration(struct icaldurationtype d) +{ + return (d.is_neg == -1); +} struct icaltimetype icaltime_add(struct icaltimetype t, struct icaldurationtype d) { int dt = icaldurationtype_as_int(d); t.second += dt; t = icaltime_normalize(t); return t; } struct icaldurationtype icaltime_subtract(struct icaltimetype t1, struct icaltimetype t2) { time_t t1t = icaltime_as_timet(t1); time_t t2t = icaltime_as_timet(t2); - return icaldurationtype_from_int(t1t-t2t); + return icaldurationtype_from_int((int)(t1t-t2t)); } |