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Diffstat (limited to 'src/vf_access_calendar.c')
| -rw-r--r-- | src/vf_access_calendar.c | 528 |
1 files changed, 528 insertions, 0 deletions
diff --git a/src/vf_access_calendar.c b/src/vf_access_calendar.c new file mode 100644 index 0000000..159c432 --- /dev/null +++ b/src/vf_access_calendar.c @@ -0,0 +1,528 @@ +/**************************************************************************** + + (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 <common/types.h> + +#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 + *===========================================================================*/ |