/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* vi:set ts=4 sts=4 sw=4 expandtab : */ /*====================================================================== FILE: icalvalue.c CREATOR: eric 02 May 1999 $Id$ (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 icalvalue.c Contributions from: Graham Davison (g.m.davison@computer.org) ======================================================================*/ #ifdef HAVE_CONFIG_H #include #endif #include "icalerror.h" #include "icalmemory.h" #include "icalparser.h" #include "icalenums.h" #include "icalvalueimpl.h" #include /* for malloc */ #include /* for sprintf */ #include /* For memset, others */ #include /* For offsetof() macro */ #include #include /* for mktime */ #include /* for atoi and atof */ #include /* for SHRT_MAX */ #ifdef WIN32 #define snprintf _snprintf #define strcasecmp stricmp #endif #if _MAC_OS_ #include "icalmemory_strdup.h" #endif #define TMP_BUF_SIZE 1024 void print_datetime_to_string(char* str, const struct icaltimetype *data); void print_date_to_string(char* str, const struct icaltimetype *data); void print_time_to_string(char* str, const struct icaltimetype *data); struct icalvalue_impl* icalvalue_new_impl(icalvalue_kind kind){ struct icalvalue_impl* v; if (!icalvalue_kind_is_valid(kind)) return NULL; if ( ( v = (struct icalvalue_impl*) malloc(sizeof(struct icalvalue_impl))) == 0) { icalerror_set_errno(ICAL_NEWFAILED_ERROR); return 0; } strcpy(v->id,"val"); v->kind = kind; v->size = 0; v->parent = 0; v->x_value = 0; memset(&(v->data),0,sizeof(v->data)); return v; } icalvalue* icalvalue_new (icalvalue_kind kind) { return (icalvalue*)icalvalue_new_impl(kind); } icalvalue* icalvalue_new_clone(const icalvalue* old) { struct icalvalue_impl* new; new = icalvalue_new_impl(old->kind); if (new == 0){ return 0; } strcpy(new->id, old->id); new->kind = old->kind; new->size = old->size; switch (new->kind){ case ICAL_ATTACH_VALUE: case ICAL_BINARY_VALUE: { /* Hmm. We just ref the attach value, which may not be the right * thing to do. We cannot quite copy the data, anyways, since we * don't know how long it is. */ new->data.v_attach = old->data.v_attach; if (new->data.v_attach) icalattach_ref (new->data.v_attach); break; } case ICAL_QUERY_VALUE: case ICAL_STRING_VALUE: case ICAL_TEXT_VALUE: case ICAL_CALADDRESS_VALUE: case ICAL_URI_VALUE: { if (old->data.v_string != 0) { new->data.v_string=icalmemory_strdup(old->data.v_string); if ( new->data.v_string == 0 ) { return 0; } } break; } case ICAL_RECUR_VALUE: { if(old->data.v_recur != 0){ new->data.v_recur = malloc(sizeof(struct icalrecurrencetype)); if(new->data.v_recur == 0){ return 0; } memcpy( new->data.v_recur, old->data.v_recur, sizeof(struct icalrecurrencetype)); } break; } case ICAL_X_VALUE: { if (old->x_value != 0) { new->x_value=icalmemory_strdup(old->x_value); if (new->x_value == 0) { return 0; } } break; } default: { /* all of the other types are stored as values, not pointers, so we can just copy the whole structure. */ new->data = old->data; } } return new; } static char* icalmemory_strdup_and_dequote(const char* str) { const char* p; char* out = (char*)malloc(sizeof(char) * strlen(str) +1); char* pout; if (out == 0){ return 0; } pout = out; for (p = str; *p!=0; p++){ if( *p == '\\') { p++; switch(*p){ case 0: { *pout = '\0'; break; } case 'n': case 'N': { *pout = '\n'; break; } case 't': case 'T': { *pout = '\t'; break; } case 'r': case 'R': { *pout = '\r'; break; } case 'b': case 'B': { *pout = '\b'; break; } case 'f': case 'F': { *pout = '\f'; break; } case ';': case ',': case '"': case '\\': { *pout = *p; break; } default: { *pout = ' '; } } } else { *pout = *p; } pout++; } *pout = '\0'; return out; } /* * FIXME * * This is a bad API, as it forces callers to specify their own X type. * This function should take care of this by itself. */ static icalvalue* icalvalue_new_enum(icalvalue_kind kind, int x_type, const char* str) { int e = icalproperty_kind_and_string_to_enum(kind, str); struct icalvalue_impl *value; if(e != 0 && icalproperty_enum_belongs_to_property( icalproperty_value_kind_to_kind(kind),e)) { value = icalvalue_new_impl(kind); value->data.v_enum = e; } else { /* Make it an X value */ value = icalvalue_new_impl(kind); value->data.v_enum = x_type; icalvalue_set_x(value,str); } return value; } icalvalue* icalvalue_new_from_string_with_error(icalvalue_kind kind,const char* str,icalproperty** error) { struct icalvalue_impl *value = 0; icalerror_check_arg_rz(str!=0,"str"); if (error != 0){ *error = 0; } switch (kind){ case ICAL_ATTACH_VALUE: { icalattach *attach; attach = icalattach_new_from_url (str); if (!attach) break; value = icalvalue_new_attach (attach); icalattach_unref (attach); break; } case ICAL_BINARY_VALUE: case ICAL_BOOLEAN_VALUE: { /* HACK */ value = 0; if (error != 0){ char temp[TMP_BUF_SIZE]; sprintf(temp,"%s Values are not implemented", icalvalue_kind_to_string(kind)); *error = icalproperty_vanew_xlicerror( temp, icalparameter_new_xlicerrortype( ICAL_XLICERRORTYPE_VALUEPARSEERROR), 0); } break; } case ICAL_TRANSP_VALUE: value = icalvalue_new_enum(kind, (int)ICAL_TRANSP_X,str); break; case ICAL_METHOD_VALUE: value = icalvalue_new_enum(kind, (int)ICAL_METHOD_X,str); break; case ICAL_STATUS_VALUE: value = icalvalue_new_enum(kind, (int)ICAL_STATUS_X,str); break; case ICAL_ACTION_VALUE: value = icalvalue_new_enum(kind, (int)ICAL_ACTION_X,str); break; case ICAL_QUERY_VALUE: value = icalvalue_new_query(str); break; case ICAL_CLASS_VALUE: value = icalvalue_new_enum(kind, (int)ICAL_CLASS_X,str); break; case ICAL_INTEGER_VALUE: value = icalvalue_new_integer(atoi(str)); break; case ICAL_FLOAT_VALUE: value = icalvalue_new_float((float)atof(str)); break; case ICAL_UTCOFFSET_VALUE: { int t,utcoffset, hours, minutes, seconds; /* treat the UTCOFSET string a a decimal number, disassemble its digits and reconstruct it as sections */ t = strtol(str,0,10); /* add phantom seconds field */ if(abs(t)<9999){t *= 100; } hours = (t/10000); minutes = (t-hours*10000)/100; seconds = (t-hours*10000-minutes*100); utcoffset = hours*3600+minutes*60+seconds; value = icalvalue_new_utcoffset(utcoffset); break; } case ICAL_TEXT_VALUE: { char* dequoted_str = icalmemory_strdup_and_dequote(str); value = icalvalue_new_text(dequoted_str); free(dequoted_str); break; } case ICAL_STRING_VALUE: value = icalvalue_new_string(str); break; case ICAL_CALADDRESS_VALUE: value = icalvalue_new_caladdress(str); break; case ICAL_URI_VALUE: value = icalvalue_new_uri(str); break; case ICAL_GEO_VALUE: value = 0; /* HACK */ if (error != 0){ char temp[TMP_BUF_SIZE]; sprintf(temp,"GEO Values are not implemented"); *error = icalproperty_vanew_xlicerror( temp, icalparameter_new_xlicerrortype( ICAL_XLICERRORTYPE_VALUEPARSEERROR), 0); } /*icalerror_warn("Parsing GEO properties is unimplmeneted");*/ break; case ICAL_RECUR_VALUE: { struct icalrecurrencetype rt; rt = icalrecurrencetype_from_string(str); if(rt.freq != ICAL_NO_RECURRENCE){ value = icalvalue_new_recur(rt); } break; } case ICAL_DATE_VALUE: case ICAL_DATETIME_VALUE: { struct icaltimetype tt; tt = icaltime_from_string(str); if(!icaltime_is_null_time(tt)){ value = icalvalue_new_impl(kind); value->data.v_time = tt; icalvalue_reset_kind(value); } break; } case ICAL_DATETIMEPERIOD_VALUE: { struct icaltimetype tt; struct icalperiodtype p; tt = icaltime_from_string(str); if(!icaltime_is_null_time(tt)){ value = icalvalue_new_datetime(tt); break; } p = icalperiodtype_from_string(str); if (!icalperiodtype_is_null_period(p)){ value = icalvalue_new_period(p); } break; } case ICAL_DURATION_VALUE: { struct icaldurationtype dur = icaldurationtype_from_string(str); if (!icaldurationtype_is_bad_duration(dur)) { /* failed to parse */ value = icalvalue_new_duration(dur); } break; } case ICAL_PERIOD_VALUE: { struct icalperiodtype p; p = icalperiodtype_from_string(str); if(!icalperiodtype_is_null_period(p)){ value = icalvalue_new_period(p); } break; } case ICAL_TRIGGER_VALUE: { struct icaltriggertype tr = icaltriggertype_from_string(str); if (!icaltriggertype_is_bad_trigger(tr)) { value = icalvalue_new_trigger(tr); } break; } case ICAL_REQUESTSTATUS_VALUE: { struct icalreqstattype rst = icalreqstattype_from_string(str); if(rst.code != ICAL_UNKNOWN_STATUS){ value = icalvalue_new_requeststatus(rst); } break; } case ICAL_X_VALUE: { char* dequoted_str = icalmemory_strdup_and_dequote(str); value = icalvalue_new_x(dequoted_str); free(dequoted_str); } break; default: { if (error != 0 ){ char temp[TMP_BUF_SIZE]; snprintf(temp,TMP_BUF_SIZE,"Unknown type for \'%s\'",str); *error = icalproperty_vanew_xlicerror( temp, icalparameter_new_xlicerrortype( ICAL_XLICERRORTYPE_VALUEPARSEERROR), 0); } icalerror_warn("icalvalue_new_from_string got an unknown value type"); value=0; } } if (error != 0 && *error == 0 && value == 0){ char temp[TMP_BUF_SIZE]; snprintf(temp,TMP_BUF_SIZE,"Failed to parse value: \'%s\'",str); *error = icalproperty_vanew_xlicerror( temp, icalparameter_new_xlicerrortype( ICAL_XLICERRORTYPE_VALUEPARSEERROR), 0); } return value; } icalvalue* icalvalue_new_from_string(icalvalue_kind kind,const char* str) { return icalvalue_new_from_string_with_error(kind,str,(icalproperty**)0); } void icalvalue_free (icalvalue* v) { icalerror_check_arg_rv((v != 0),"value"); #ifdef ICAL_FREE_ON_LIST_IS_ERROR icalerror_assert( (v->parent ==0),"This value is still attached to a property"); #else if(v->parent !=0){ return; } #endif if(v->x_value != 0){ free(v->x_value); } switch (v->kind){ case ICAL_BINARY_VALUE: case ICAL_ATTACH_VALUE: { if (v->data.v_attach) { icalattach_unref (v->data.v_attach); v->data.v_attach = NULL; } break; } case ICAL_TEXT_VALUE: case ICAL_CALADDRESS_VALUE: case ICAL_URI_VALUE: case ICAL_QUERY_VALUE: { if (v->data.v_string != 0) { free((void*)v->data.v_string); v->data.v_string = 0; } break; } case ICAL_RECUR_VALUE: { if(v->data.v_recur != 0){ free((void*)v->data.v_recur); v->data.v_recur = 0; } break; } default: { /* Nothing to do */ } } v->kind = ICAL_NO_VALUE; v->size = 0; v->parent = 0; memset(&(v->data),0,sizeof(v->data)); v->id[0] = 'X'; free(v); } int icalvalue_is_valid (const icalvalue* value) { if(value == 0){ return 0; } return 1; } static char* icalvalue_binary_as_ical_string(const icalvalue* value) { const char* data; char* str; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_binary(value); str = (char*)icalmemory_tmp_buffer(60); sprintf(str,"icalvalue_binary_as_ical_string is not implemented yet"); return str; } #define MAX_INT_DIGITS 12 /* Enough for 2^32 + sign*/ static char* icalvalue_int_as_ical_string(const icalvalue* value) { int data; char* str = (char*)icalmemory_tmp_buffer(MAX_INT_DIGITS); icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_integer(value); snprintf(str,MAX_INT_DIGITS,"%d",data); return str; } static char* icalvalue_utcoffset_as_ical_string(const icalvalue* value) { int data,h,m,s; char sign; char* str = (char*)icalmemory_tmp_buffer(9); icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_utcoffset(value); if (abs(data) == data){ sign = '+'; } else { sign = '-'; } h = data/3600; m = (data - (h*3600))/ 60; s = (data - (h*3600) - (m*60)); if (s > 0) sprintf(str,"%c%02d%02d%02d",sign,abs(h),abs(m),abs(s)); else sprintf(str,"%c%02d%02d",sign,abs(h),abs(m)); return str; } static char* icalvalue_string_as_ical_string(const icalvalue* value) { const char* data; char* str = 0; icalerror_check_arg_rz( (value!=0),"value"); data = value->data.v_string; str = (char*)icalmemory_tmp_buffer(strlen(data)+1); strcpy(str,data); return str; } static char* icalvalue_recur_as_ical_string(const icalvalue* value) { struct icalrecurrencetype *recur = value->data.v_recur; return icalrecurrencetype_as_string(recur); } /* @todo This is not RFC2445 compliant. * The RFC only allows: * TSAFE-CHAR = %x20-21 / %x23-2B / %x2D-39 / %x3C-5B / %x5D-7E / NON-US-ASCII * As such, \t\r\b\f are not allowed, not even escaped */ static char* icalvalue_text_as_ical_string(const icalvalue* value) { char *str; char *str_p; char *rtrn; const char *p; size_t buf_sz; buf_sz = strlen(value->data.v_string)+1; str_p = str = (char*)icalmemory_new_buffer(buf_sz); if (str_p == 0){ return 0; } for(p=value->data.v_string; *p!=0; p++){ switch(*p){ case '\n': { icalmemory_append_string(&str,&str_p,&buf_sz,"\\n"); break; } case '\t': { icalmemory_append_string(&str,&str_p,&buf_sz,"\\t"); break; } case '\r': { icalmemory_append_string(&str,&str_p,&buf_sz,"\\r"); break; } case '\b': { icalmemory_append_string(&str,&str_p,&buf_sz,"\\b"); break; } case '\f': { icalmemory_append_string(&str,&str_p,&buf_sz,"\\f"); break; } case ';': case ',': case '"': case '\\':{ icalmemory_append_char(&str,&str_p,&buf_sz,'\\'); icalmemory_append_char(&str,&str_p,&buf_sz,*p); break; } default: { icalmemory_append_char(&str,&str_p,&buf_sz,*p); } } } /* Assume the last character is not a '\0' and add one. We could check *str_p != 0, but that would be an uninitialized memory read. */ icalmemory_append_char(&str,&str_p,&buf_sz,'\0'); rtrn = icalmemory_tmp_copy(str); icalmemory_free_buffer(str); return rtrn; } static char* icalvalue_attach_as_ical_string(const icalvalue* value) { icalattach *a; char * str; icalerror_check_arg_rz( (value!=0),"value"); a = icalvalue_get_attach(value); if (icalattach_get_is_url (a)) { const char *url; url = icalattach_get_url (a); str = icalmemory_tmp_buffer (strlen (url) + 1); strcpy (str, url); return str; } else return icalvalue_binary_as_ical_string (value); } static char* icalvalue_duration_as_ical_string(const icalvalue* value) { struct icaldurationtype data; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_duration(value); return icaldurationtype_as_ical_string(data); } void print_time_to_string(char* str, const struct icaltimetype *data) { char temp[20]; if (icaltime_is_utc(*data)){ sprintf(temp,"%02d%02d%02dZ",data->hour,data->minute,data->second); } else { sprintf(temp,"%02d%02d%02d",data->hour,data->minute,data->second); } strcat(str,temp); } void print_date_to_string(char* str, const struct icaltimetype *data) { char temp[20]; sprintf(temp,"%04d%02d%02d",data->year,data->month,data->day); strcat(str,temp); } static char* icalvalue_date_as_ical_string(const icalvalue* value) { struct icaltimetype data; char* str; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_date(value); str = (char*)icalmemory_tmp_buffer(9); str[0] = 0; print_date_to_string(str,&data); return str; } void print_datetime_to_string(char* str, const struct icaltimetype *data) { print_date_to_string(str,data); strcat(str,"T"); print_time_to_string(str,data); } static const char* icalvalue_datetime_as_ical_string(const icalvalue* value) { struct icaltimetype data; char* str; icalvalue_kind kind = icalvalue_isa(value); icalerror_check_arg_rz( (value!=0),"value"); if( !(kind == ICAL_DATE_VALUE || kind == ICAL_DATETIME_VALUE )) { icalerror_set_errno(ICAL_BADARG_ERROR); return 0; } data = icalvalue_get_datetime(value); str = (char*)icalmemory_tmp_buffer(20); str[0] = 0; print_datetime_to_string(str,&data); return str; } static char* icalvalue_float_as_ical_string(const icalvalue* value) { float data; char* str; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_float(value); str = (char*)icalmemory_tmp_buffer(15); sprintf(str,"%f",data); return str; } static char* icalvalue_geo_as_ical_string(const icalvalue* value) { struct icalgeotype data; char* str; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_geo(value); str = (char*)icalmemory_tmp_buffer(25); sprintf(str,"%f;%f",data.lat,data.lon); return str; } static const char* icalvalue_datetimeperiod_as_ical_string(const icalvalue* value) { struct icaldatetimeperiodtype dtp = icalvalue_get_datetimeperiod(value); icalerror_check_arg_rz( (value!=0),"value"); if(!icaltime_is_null_time(dtp.time)){ return icaltime_as_ical_string(dtp.time); } else { return icalperiodtype_as_ical_string(dtp.period); } } static const char* icalvalue_period_as_ical_string(const icalvalue* value) { struct icalperiodtype data; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_period(value); return icalperiodtype_as_ical_string(data); } static const char* icalvalue_trigger_as_ical_string(const icalvalue* value) { struct icaltriggertype data; icalerror_check_arg_rz( (value!=0),"value"); data = icalvalue_get_trigger(value); if(!icaltime_is_null_time(data.time)){ return icaltime_as_ical_string(data.time); } else { return icaldurationtype_as_ical_string(data.duration); } } const char* icalvalue_as_ical_string(const icalvalue* value) { if(value == 0){ return 0; } switch (value->kind){ case ICAL_ATTACH_VALUE: return icalvalue_attach_as_ical_string(value); case ICAL_BINARY_VALUE: return icalvalue_binary_as_ical_string(value); case ICAL_BOOLEAN_VALUE: case ICAL_INTEGER_VALUE: return icalvalue_int_as_ical_string(value); case ICAL_UTCOFFSET_VALUE: return icalvalue_utcoffset_as_ical_string(value); case ICAL_TEXT_VALUE: return icalvalue_text_as_ical_string(value); case ICAL_QUERY_VALUE: return icalvalue_string_as_ical_string(value); case ICAL_STRING_VALUE: case ICAL_URI_VALUE: case ICAL_CALADDRESS_VALUE: return icalvalue_string_as_ical_string(value); case ICAL_DATE_VALUE: return icalvalue_date_as_ical_string(value); case ICAL_DATETIME_VALUE: return icalvalue_datetime_as_ical_string(value); case ICAL_DURATION_VALUE: return icalvalue_duration_as_ical_string(value); case ICAL_PERIOD_VALUE: return icalvalue_period_as_ical_string(value); case ICAL_DATETIMEPERIOD_VALUE: return icalvalue_datetimeperiod_as_ical_string(value); case ICAL_FLOAT_VALUE: return icalvalue_float_as_ical_string(value); case ICAL_GEO_VALUE: return icalvalue_geo_as_ical_string(value); case ICAL_RECUR_VALUE: return icalvalue_recur_as_ical_string(value); case ICAL_TRIGGER_VALUE: return icalvalue_trigger_as_ical_string(value); case ICAL_REQUESTSTATUS_VALUE: return icalreqstattype_as_string(value->data.v_requeststatus); case ICAL_ACTION_VALUE: case ICAL_METHOD_VALUE: case ICAL_STATUS_VALUE: case ICAL_TRANSP_VALUE: case ICAL_CLASS_VALUE: if(value->x_value !=0){ return icalmemory_tmp_copy(value->x_value); } return icalproperty_enum_to_string(value->data.v_enum); case ICAL_X_VALUE: if (value->x_value != 0) return icalmemory_tmp_copy(value->x_value); /* FALLTHRU */ case ICAL_NO_VALUE: default: { return 0; } } } icalvalue_kind icalvalue_isa (const icalvalue* value) { if(value == 0){ return ICAL_NO_VALUE; } return value->kind; } int icalvalue_isa_value (void* value) { struct icalvalue_impl *impl = (struct icalvalue_impl *)value; icalerror_check_arg_rz( (value!=0), "value"); if (strcmp(impl->id,"val") == 0) { return 1; } else { return 0; } } static int icalvalue_is_time(const icalvalue* a) { icalvalue_kind kind = icalvalue_isa(a); if(kind == ICAL_DATETIME_VALUE || kind == ICAL_DATE_VALUE ){ return 1; } return 0; } /* * In case of error, this function returns 0. This is partly bogus, as 0 is * not part of the returned enum. * FIXME We should probably add an error value to the enum. */ icalparameter_xliccomparetype icalvalue_compare(const icalvalue* a, const icalvalue *b) { icalerror_check_arg_rz( (a!=0), "a"); icalerror_check_arg_rz( (b!=0), "b"); /* Not the same type; they can only be unequal */ if( ! (icalvalue_is_time(a) && icalvalue_is_time(b)) && icalvalue_isa(a) != icalvalue_isa(b)){ return ICAL_XLICCOMPARETYPE_NOTEQUAL; } switch (icalvalue_isa(a)){ case ICAL_ATTACH_VALUE: { if (icalattach_get_is_url(a->data.v_attach) && icalattach_get_is_url(b->data.v_attach)) { if (strcasecmp(icalattach_get_url(a->data.v_attach), icalattach_get_url(b->data.v_attach)) == 0) return ICAL_XLICCOMPARETYPE_EQUAL; else return ICAL_XLICCOMPARETYPE_NOTEQUAL; } else { if (a->data.v_attach == b->data.v_attach) return ICAL_XLICCOMPARETYPE_EQUAL; else return ICAL_XLICCOMPARETYPE_NOTEQUAL; } } case ICAL_BINARY_VALUE: { if (a->data.v_attach == b->data.v_attach) return ICAL_XLICCOMPARETYPE_EQUAL; else return ICAL_XLICCOMPARETYPE_NOTEQUAL; } case ICAL_BOOLEAN_VALUE: { if (icalvalue_get_boolean(a) == icalvalue_get_boolean(b)){ return ICAL_XLICCOMPARETYPE_EQUAL; } else { return ICAL_XLICCOMPARETYPE_NOTEQUAL; } } case ICAL_FLOAT_VALUE: { if (a->data.v_float > b->data.v_float){ return ICAL_XLICCOMPARETYPE_GREATER; } else if (a->data.v_float < b->data.v_float){ return ICAL_XLICCOMPARETYPE_LESS; } else { return ICAL_XLICCOMPARETYPE_EQUAL; } } case ICAL_INTEGER_VALUE: case ICAL_UTCOFFSET_VALUE: { if (a->data.v_int > b->data.v_int){ return ICAL_XLICCOMPARETYPE_GREATER; } else if (a->data.v_int < b->data.v_int){ return ICAL_XLICCOMPARETYPE_LESS; } else { return ICAL_XLICCOMPARETYPE_EQUAL; } } case ICAL_DURATION_VALUE: { int dur_a = icaldurationtype_as_int(a->data.v_duration); int dur_b = icaldurationtype_as_int(b->data.v_duration); if (dur_a > dur_b){ return ICAL_XLICCOMPARETYPE_GREATER; } else if (dur_a < dur_b){ return ICAL_XLICCOMPARETYPE_LESS; } else { return ICAL_XLICCOMPARETYPE_EQUAL; } } case ICAL_TEXT_VALUE: case ICAL_URI_VALUE: case ICAL_CALADDRESS_VALUE: case ICAL_TRIGGER_VALUE: case ICAL_DATE_VALUE: case ICAL_DATETIME_VALUE: case ICAL_DATETIMEPERIOD_VALUE: case ICAL_QUERY_VALUE: case ICAL_RECUR_VALUE: { int r; r = strcmp(icalvalue_as_ical_string(a), icalvalue_as_ical_string(b)); if (r > 0) { return ICAL_XLICCOMPARETYPE_GREATER; } else if (r < 0){ return ICAL_XLICCOMPARETYPE_LESS; } else { return ICAL_XLICCOMPARETYPE_EQUAL; } } case ICAL_METHOD_VALUE: { if (icalvalue_get_method(a) == icalvalue_get_method(b)){ return ICAL_XLICCOMPARETYPE_EQUAL; } else { return ICAL_XLICCOMPARETYPE_NOTEQUAL; } } case ICAL_STATUS_VALUE: { if (icalvalue_get_status(a) == icalvalue_get_status(b)){ return ICAL_XLICCOMPARETYPE_EQUAL; } else { return ICAL_XLICCOMPARETYPE_NOTEQUAL; } } case ICAL_TRANSP_VALUE: { if (icalvalue_get_transp(a) == icalvalue_get_transp(b)){ return ICAL_XLICCOMPARETYPE_EQUAL; } else { return ICAL_XLICCOMPARETYPE_NOTEQUAL; } } case ICAL_ACTION_VALUE: { if (icalvalue_get_action(a) == icalvalue_get_action(b)){ return ICAL_XLICCOMPARETYPE_EQUAL; } else { return ICAL_XLICCOMPARETYPE_NOTEQUAL; } } case ICAL_PERIOD_VALUE: case ICAL_GEO_VALUE: case ICAL_NO_VALUE: default: { icalerror_warn("Comparison not implemented for value type"); return 0; } } } /** Examine the value and possibly change the kind to agree with the * value */ void icalvalue_reset_kind(icalvalue* value) { if( (value->kind==ICAL_DATETIME_VALUE || value->kind==ICAL_DATE_VALUE )&& !icaltime_is_null_time(value->data.v_time) ) { if(icaltime_is_date(value->data.v_time)){ value->kind = ICAL_DATE_VALUE; } else { value->kind = ICAL_DATETIME_VALUE; } } } void icalvalue_set_parent(icalvalue* value, icalproperty* property) { value->parent = property; } icalproperty* icalvalue_get_parent(icalvalue* value) { return value->parent; } int icalvalue_encode_ical_string(const char *szText, char *szEncText, int nMaxBufferLen) { char *ptr; icalvalue *value = 0; if ((szText == 0) || (szEncText == 0)) return 0; value = icalvalue_new_from_string(ICAL_STRING_VALUE, szText); if (value == 0) return 0; ptr = icalvalue_text_as_ical_string(value); if (ptr == 0) return 0; if ((int)strlen(ptr) >= nMaxBufferLen) { icalvalue_free (value); return 0; } strcpy(szEncText, ptr); icalvalue_free ((icalvalue*)value); return 1; } /* The remaining interfaces are 'new', 'set' and 'get' for each of the value types */