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/****************************************************************************
(C) Nick Marley, 2001 -
This software is distributed under the GNU Lesser General Public Licence.
Please read and understand the comments at the top of vf_iface.h before use!
FILE
$Workfile: vf_access.c $
$Revision: 1.7 $
$Author: tilda $
ORIGINAL AUTHOR
Nick Marley
DESCRIPTION
Wrappers on the core access functions & other utility functions.
REFERENCES
(none)
MODIFICATION HISTORY
* $Log: vf_access_calendar.c,v $
* Revision 1.7 2002/11/24 14:26:22 tilda
* IID484686 - More vcard work.
*
* Revision 1.6 2002/11/15 09:15:00 tilda
* IID638823 - Various portability issues.
*
* Revision 1.5 2002/11/03 18:43:16 tilda
* IID619851 - Update and check headers and function prototypes.
*
* Revision 1.4 2002/10/26 16:09:24 tilda
* IID629125 - Ensure string functions used are portable.
*
* Revision 1.3 2002/10/08 21:45:07 tilda
* IID620473 - reduce c-runtime dependencies.
*
* Revision 1.2 2002/10/08 21:11:36 tilda
* Remove common.h.
*
* Revision 1.1 2002/01/06 16:18:48 tilda
* Add dialog box for events / todos.
*
*****************************************************************************/
#ifndef NORCSID
static const char vf_access_calendar_c_vss_id[] = "$Header: /cvsroot/vformat/src/vformat/src/vf_access_calendar.c,v 1.7 2002/11/24 14:26:22 tilda Exp $";
#endif
/*============================================================================*
ANSI C & System-wide Header Files
*============================================================================*/
#include <time.h>
#include <stdio.h>
#include <ctype.h>
/*===========================================================================*
Interface Header Files
*===========================================================================*/
#include "vformat/vf_iface.h"
/*===========================================================================*
Local Header File
*===========================================================================*/
#include "vf_config.h"
#include "vf_malloc.h"
#include "vf_internals.h"
#include "vf_strings.h"
#include "vf_string_arrays.h"
/*===========================================================================*
Public Data
*===========================================================================*/
/* None */
/*===========================================================================*
Private Defines
*===========================================================================*/
#define ISO8061_TOKEN_YEARS 'Y'
#define ISO8061_TOKEN_MONTHS 'M'
#define ISO8061_TOKEN_WEEKS 'W'
#define ISO8061_TOKEN_DAYS 'D'
#define ISO8061_TOKEN_HOURS 'H'
#define ISO8061_TOKEN_MINUTES 'M'
#define ISO8061_TOKEN_SECONDS 'S'
#define ISO8061_TOKEN_TIME 'T'
#define ISO8061_TOKEN_PERIOD 'P'
/*===========================================================================*
Private Data Types
*===========================================================================*/
/* None */
/*===========================================================================*
Private Function Prototypes
*===========================================================================*/
static void append_iso8061_value(char *p_string, uint32_t value, char symbol);
static void append_iso8061_tag(char *p_string, char symbol);
/*===========================================================================*
Private Data
*===========================================================================*/
/* None */
/*===========================================================================*
Public Function Implementations
*===========================================================================*/
/*---------------------------------------------------------------------------*
* NAME
* vf_set_prop_value_time()
*
* DESCRIPTION
* Set a time_t value into a VF property.
*
* RETURNS
* TRUE iff property added & set OK.
*---------------------------------------------------------------------------*/
bool_t vf_set_prop_value_time(
VF_PROP_T *p_prop, /* The property */
uint32_t n_string, /* Which string we're encoding to */
const time_t t_value /* Time value */
)
{
bool_t ret;
struct tm *p_tm;
p_tm = localtime(&t_value);
if (p_tm)
{
char value[256];
if (p_tm->tm_hour || p_tm->tm_min || p_tm->tm_sec)
{
sprintf(value, "%4d%02d%02dT%02d%02d%02d",
1900 + p_tm->tm_year,
1 + p_tm->tm_mon,
p_tm->tm_mday,
p_tm->tm_hour,
p_tm->tm_min,
p_tm->tm_sec);
}
else
{
sprintf(value, "%4d%02d%02d",
1900 + p_tm->tm_year,
1 + p_tm->tm_mon,
p_tm->tm_mday);
}
ret = vf_set_prop_value_string(p_prop, n_string, value);
}
else
{
ret = FALSE;
}
return ret;
}
/*---------------------------------------------------------------------------*
* NAME
* vf_get_prop_value_time()
*
* DESCRIPTION
* Fetch a time_t value from a VF property.
*
* RETURNS
* TRUE iff foudn & converted OK.
*---------------------------------------------------------------------------*/
bool_t vf_get_prop_value_time(
VF_PROP_T *p_prop, /* The property */
uint32_t n_string, /* Which string we're decoding */
time_t *p_t_value /* Pointer to output time value */
)
{
bool_t ret;
const char *p_value;
p_value = vf_get_prop_value_string(p_prop, n_string);
if (p_value)
{
ret = vf_date_string_to_time(p_t_value, p_value);
}
else
{
ret = FALSE;
}
return ret;
}
/*---------------------------------------------------------------------------*
* NAME
* vf_date_string_to_time()
*
* DESCRIPTION
* Convert calendar string to absolute time. The basic formats are
* 19960401, 19960401T073000Z
*
* RETURNS
* TRUE <=> conversion OK, FALSE else.
*---------------------------------------------------------------------------*/
bool_t vf_date_string_to_time(
uint32_t *p_time, /* Output time value */
const char *p_string /* Input string */
)
{
bool_t ret = FALSE;
if (p_string && p_time)
{
time_t t;
struct tm tm;
p_memset(&tm, '\0', sizeof(tm));
/*
* p_string[8] is either 'T' or '\0' or an error.
*/
if (ISO8061_TOKEN_TIME == p_string[8])
{
if (6 == sscanf(p_string, "%4d%2d%2dT%2d%2d%2d",
&tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec))
{
if ((1970 <= tm.tm_year) &&
((1 <= tm.tm_mon) && (tm.tm_mon <= 12)) &&
((1 <= tm.tm_mday) && (tm.tm_mday <= 28)) &&
((0 <= tm.tm_hour) && (tm.tm_hour <= 23)) &&
((0 <= tm.tm_min) && (tm.tm_hour <= 59)) &&
((0 <= tm.tm_sec) && (tm.tm_sec <= 59)))
{
ret = TRUE;
}
}
}
else
if ('\0' == p_string[8])
{
if (3 == sscanf(p_string, "%4d%2d%2d",
&tm.tm_year, &tm.tm_mon, &tm.tm_mday))
{
if ((1970 <= tm.tm_year) &&
((1 <= tm.tm_mon) && (tm.tm_mon <= 12)) &&
((1 <= tm.tm_mday) && (tm.tm_mday <= 28)))
{
ret = TRUE;
}
}
}
else
{
/* Nor flesh nor fish nor fowl */
}
/*
* Reduce the year value to correct range & convert to time_t.
*/
if (ret)
{
tm.tm_mon -= 1;
tm.tm_year -= 1900;
tm.tm_isdst = -1;
t = mktime(&tm);
if ((-1) == t)
{
ret = FALSE;
}
else
{
*p_time = (uint32_t)t;
}
}
}
return ret;
}
/*---------------------------------------------------------------------------*
* NAME
* vf_period_string_to_time()
*
* DESCRIPTION
* Convert period definition string to time value. The format is
* P[aaaY][bbbM][cccW][dddD]T[eeeH][fffM][gggS] where 'aaa' is a
* number of years, bbb months etc.
*
* RETURNS
* TRUE <=> conversion OK, FALSE else.
*---------------------------------------------------------------------------*/
bool_t vf_period_string_to_time(
VF_ISO8601_PERIOD_T *p_period, /* Output time value */
const char *p_string /* Input string */
)
{
bool_t ret = TRUE;
bool_t in_time_part = FALSE;
p_memset(p_period, '\0', sizeof(*p_period));
if (p_string && ('P' == p_string[0]) && *(++p_string))
{
while (ret && *p_string)
{
uint32_t value = 0;
while (isdigit((int)*p_string))
{
value = (value * 10) + *(p_string++) - '0';
}
switch (*p_string++)
{
case '\0':
{
ret = FALSE;
}
break;
case ISO8061_TOKEN_YEARS:
{
p_period->years = value;
}
break;
case ISO8061_TOKEN_MONTHS:
/*case ISO8061_TOKEN_MINUTES:*/
{
if (in_time_part)
{
p_period->minutes = value;
}
else
{
p_period->months = value;
}
}
break;
case ISO8061_TOKEN_WEEKS:
{
p_period->weeks = value;
}
break;
case ISO8061_TOKEN_DAYS:
{
p_period->days = value;
}
break;
case ISO8061_TOKEN_TIME:
{
if (in_time_part)
{
ret = FALSE;
}
else
{
in_time_part = TRUE;
}
}
break;
case ISO8061_TOKEN_HOURS:
{
p_period->hours = value;
}
break;
case ISO8061_TOKEN_SECONDS:
{
p_period->seconds = value;
}
break;
default:
{
ret = FALSE;
}
break;
}
}
}
else
{
ret = FALSE;
}
return ret;
}
/*---------------------------------------------------------------------------*
* NAME
* vf_period_time_to_string()
*
* DESCRIPTION
* Convert a VF_ISO8601_PERIOD_T to a string.
*
* RETURNS
* Number of characters written.
*---------------------------------------------------------------------------*/
uint32_t vf_period_time_to_string(
char *p_string, /* Output string */
const VF_ISO8601_PERIOD_T *p_period /* Input period value */
)
{
uint32_t ret = 0;
if (p_string && p_period)
{
p_string[0] = '\0';
append_iso8061_tag(p_string, ISO8061_TOKEN_PERIOD);
append_iso8061_value(p_string, p_period->years, ISO8061_TOKEN_YEARS);
append_iso8061_value(p_string, p_period->months, ISO8061_TOKEN_MONTHS);
append_iso8061_value(p_string, p_period->weeks, ISO8061_TOKEN_WEEKS);
append_iso8061_value(p_string, p_period->days, ISO8061_TOKEN_DAYS);
if (p_period->hours || p_period->minutes || p_period->seconds)
{
append_iso8061_tag(p_string, ISO8061_TOKEN_TIME);
}
append_iso8061_value(p_string, p_period->hours, ISO8061_TOKEN_HOURS);
append_iso8061_value(p_string, p_period->minutes, ISO8061_TOKEN_MINUTES);
append_iso8061_value(p_string, p_period->seconds, ISO8061_TOKEN_SECONDS);
ret = p_strlen(p_string);
}
return ret;
}
/*===========================================================================*
Private Function Implementations
*===========================================================================*/
/*---------------------------------------------------------------------------*
* NAME
* append_iso8061_value()
*
* DESCRIPTION
* Append xxxY value to the current encoded string.
*
* RETURNS
* (none)
*---------------------------------------------------------------------------*/
void append_iso8061_value(char *p_string, uint32_t value, char symbol)
{
if (value)
{
sprintf(p_string + p_strlen(p_string), "%lu%c", (unsigned long)value, symbol);
}
}
/*---------------------------------------------------------------------------*
* NAME
* append_iso8061_tag()
*
* DESCRIPTION
* Append indicated character to string.
*
* RETURNS
* (none).
*---------------------------------------------------------------------------*/
void append_iso8061_tag(char *p_string, char symbol)
{
p_string += p_strlen(p_string);
*p_string++ = symbol;
*p_string++ = '\0';
}
/*===========================================================================*
End Of File
*===========================================================================*/
|