Initial revision

1 files changed, 447 insertions, 0 deletions

diff --git a/libical/src/libicalss/icalgauge.c b/libical/src/libicalss/icalgauge.c
new file mode 100644
index 0000000..b958ecf
--- a/dev/null
+++ b/libical/src/libicalss/icalgauge.c
@@ -0,0 +1,447 @@
+/* -*- Mode: C -*- */
+/*======================================================================
+ FILE: icalgauge.c
+ CREATOR: eric 23 December 1999
+
+
+ $Id$
+ $Locker$
+
+ (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
+
+
+======================================================================*/
+
+#include "ical.h"
+#include "icalgauge.h"
+#include "icalgaugeimpl.h"
+#include <stdlib.h>
+
+extern char* input_buffer;
+extern char* input_buffer_p;
+int ssparse(void);
+
+struct icalgauge_impl *icalss_yy_gauge;
+
+icalgauge* icalgauge_new_from_sql(char* sql)
+{
+    struct icalgauge_impl *impl;
+
+    int r;
+    
+    if ( ( impl = (struct icalgauge_impl*)
+	   malloc(sizeof(struct icalgauge_impl))) == 0) {
+	icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+	return 0;
+    }
+
+    impl->select = pvl_newlist();
+    impl->from = pvl_newlist();
+    impl->where = pvl_newlist();
+
+    icalss_yy_gauge = impl;
+
+    input_buffer_p = input_buffer = sql;
+    r = ssparse();
+
+    return impl;
+}
+
+
+void icalgauge_free(icalgauge* gauge)
+{
+      struct icalgauge_impl *impl =  (struct icalgauge_impl*)gauge;
+      struct icalgauge_where *w;
+
+      assert(impl->select != 0);
+      assert(impl->where != 0);
+      assert(impl->from != 0);
+
+      if(impl->select){
+	  while( (w=pvl_pop(impl->select)) != 0){
+	      if(w->value != 0){
+		  free(w->value);
+	      }
+	      free(w);
+	  }
+	  pvl_free(impl->select);
+      }
+
+      if(impl->where){
+	  while( (w=pvl_pop(impl->where)) != 0){
+	      
+	      if(w->value != 0){
+		  free(w->value);
+	      }
+	      free(w);
+	  }
+	  pvl_free(impl->where);
+      }
+
+      if(impl->from){
+	  pvl_free(impl->from);
+      }
+      
+}
+
+/* Convert a VQUERY component into a gauge */
+icalcomponent* icalgauge_make_gauge(icalcomponent* query);
+
+/* icaldirset_test compares a component against a gauge, and returns
+   true if the component passes the test 
+
+   The gauge is a VCALENDAR component that specifies how to test the
+   target components. The guage holds a collection of VEVENT, VTODO or
+   VJOURNAL sub-components. Each of the sub-components has a
+   collection of properties that are compared to corresponding
+   properties in the target component, according to the
+   X-LIC-COMPARETYPE parameters to the gauge's properties.
+
+   When a gauge has several sub-components, the results of testing the
+   target against each of them is ORed together - the target
+   component will pass if it matches any of the sub-components in the
+   gauge. However, the results of matching the properties in a
+   sub-component are ANDed -- the target must match every property in
+   a gauge sub-component to match the sub-component.
+
+   Here is an example:
+
+   BEGIN:XROOT
+   DTSTART;X-LIC-COMPARETYPE=LESS:19981025T020000
+   ORGANIZER;X-LIC-COMPARETYPE=EQUAL:mrbig@host.com 
+   END:XROOT
+   BEGIN:XROOT
+   LOCATION;X-LIC-COMPARETYPE=EQUAL:McNary's Pub
+   END:XROOT
+
+   This gauge has two sub-components; one which will match a VEVENT
+   based on start time, and organizer, and another that matches based
+   on LOCATION. A target component will pass the test if it matched
+   either of the sub-components.
+   
+  */
+
+
+int icalgauge_compare_recurse(icalcomponent* comp, icalcomponent* gauge)
+{
+    int pass = 1,localpass = 0;
+    icalproperty *p;
+    icalcomponent *child,*subgauge; 
+    icalcomponent_kind gaugekind, compkind;
+
+    icalerror_check_arg_rz( (comp!=0), "comp");
+    icalerror_check_arg_rz( (gauge!=0), "gauge");
+
+    gaugekind = icalcomponent_isa(gauge);
+    compkind = icalcomponent_isa(comp);
+
+    if( ! (gaugekind == compkind || gaugekind == ICAL_ANY_COMPONENT) ){
+	return 0;
+    }   
+
+    /* Test properties. For each property in the gauge, search through
+       the component for a similar property. If one is found, compare
+       the two properties value with the comparison specified in the
+       gauge with the X-LIC-COMPARETYPE parameter */
+    
+    for(p = icalcomponent_get_first_property(gauge,ICAL_ANY_PROPERTY);
+	p != 0;
+	p = icalcomponent_get_next_property(gauge,ICAL_ANY_PROPERTY)){
+	
+	icalproperty* targetprop; 
+	icalparameter* compareparam;
+	icalparameter_xliccomparetype compare;
+	int rel; /* The relationship between the gauge and target values.*/
+	
+	/* Extract the comparison type from the gauge. If there is no
+	   comparison type, assume that it is "EQUAL" */
+	
+	compareparam = icalproperty_get_first_parameter(
+	    p,
+	    ICAL_XLICCOMPARETYPE_PARAMETER);
+	
+	if (compareparam!=0){
+	    compare = icalparameter_get_xliccomparetype(compareparam);
+	} else {
+	    compare = ICAL_XLICCOMPARETYPE_EQUAL;
+	}
+	
+	/* Find a property in the component that has the same type
+	   as the gauge property. HACK -- multiples of a single
+	   property type in the gauge will match only the first
+	   instance in the component */
+	
+	targetprop = icalcomponent_get_first_property(comp,
+						      icalproperty_isa(p));
+	
+	if(targetprop != 0){
+	
+	    /* Compare the values of the gauge property and the target
+	       property */
+	    
+	    rel = icalvalue_compare(icalproperty_get_value(p),
+				    icalproperty_get_value(targetprop));
+	    
+	    /* Now see if the comparison is equavalent to the comparison
+	       specified in the gauge */
+	    
+	    if (rel == compare){ 
+		localpass++; 
+	    } else if (compare == ICAL_XLICCOMPARETYPE_LESSEQUAL && 
+		       ( rel == ICAL_XLICCOMPARETYPE_LESS ||
+			 rel == ICAL_XLICCOMPARETYPE_EQUAL)) {
+		localpass++;
+	    } else if (compare == ICAL_XLICCOMPARETYPE_GREATEREQUAL && 
+		       ( rel == ICAL_XLICCOMPARETYPE_GREATER ||
+			 rel == ICAL_XLICCOMPARETYPE_EQUAL)) {
+		localpass++;
+	    } else if (compare == ICAL_XLICCOMPARETYPE_NOTEQUAL && 
+		       ( rel == ICAL_XLICCOMPARETYPE_GREATER ||
+			 rel == ICAL_XLICCOMPARETYPE_LESS)) {
+		localpass++;
+	    } else {
+		localpass = 0;
+	    }
+	    
+	    pass = pass && (localpass>0);
+	}
+    }
+    
+    /* Test subcomponents. Look for a child component that has a
+       counterpart in the gauge. If one is found, recursively call
+       icaldirset_test */
+    
+    for(subgauge = icalcomponent_get_first_component(gauge,ICAL_ANY_COMPONENT);
+	subgauge != 0;
+	subgauge = icalcomponent_get_next_component(gauge,ICAL_ANY_COMPONENT)){
+	
+	gaugekind = icalcomponent_isa(subgauge);
+
+	if (gaugekind == ICAL_ANY_COMPONENT){
+	    child = icalcomponent_get_first_component(comp,ICAL_ANY_COMPONENT);
+	} else {
+	    child = icalcomponent_get_first_component(comp,gaugekind);
+	}
+	
+	if(child !=0){
+	    localpass = icalgauge_compare_recurse(child,subgauge);
+	    pass = pass && localpass;
+	} else {
+	    pass = 0;
+	}
+    }
+    
+    return pass;   
+}
+
+
+int icalgauge_compare(icalgauge* gauge,icalcomponent* comp)
+{
+
+    struct icalgauge_impl *impl = (struct icalgauge_impl*)gauge;
+    icalcomponent *inner; 
+    int local_pass = 0;
+    int last_clause = 1, this_clause = 1;
+    pvl_elem e;
+
+    icalerror_check_arg_rz( (comp!=0), "comp");
+    icalerror_check_arg_rz( (gauge!=0), "gauge");
+    
+    inner = icalcomponent_get_first_real_component(comp);
+
+    if(inner == 0){
+	icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR);
+	return 0;
+    }
+
+
+    /* Check that this component is one of the FROM types */
+    local_pass = 0;
+    for(e = pvl_head(impl->from);e!=0;e=pvl_next(e)){
+	icalcomponent_kind k = (icalcomponent_kind)pvl_data(e);
+
+	if(k == icalcomponent_isa(inner)){
+	    local_pass=1;
+	}
+    }
+    
+    if(local_pass == 0){
+	return 0;
+    }
+
+    
+    /* Check each where clause against the component */
+    for(e = pvl_head(impl->where);e!=0;e=pvl_next(e)){
+	struct icalgauge_where *w = pvl_data(e);
+	icalcomponent *sub_comp;
+	icalvalue *v;
+	icalproperty *prop;
+	icalvalue_kind vk;
+
+	if(w->prop == ICAL_NO_PROPERTY || w->value == 0){
+	    icalerror_set_errno(ICAL_INTERNAL_ERROR);
+	    return 0;
+	}
+
+	/* First, create a value from the gauge */
+	vk = icalenum_property_kind_to_value_kind(w->prop);
+
+	if(vk == ICAL_NO_VALUE){
+	    icalerror_set_errno(ICAL_INTERNAL_ERROR);
+	    return 0;
+	}
+
+	v = icalvalue_new_from_string(vk,w->value);
+
+	if (v == 0){
+	    /* Keep error set by icalvalue_from-string*/
+	    return 0;
+	}
+	    
+	/* Now find the corresponding property in the component,
+	   descending into a sub-component if necessary */
+
+	if(w->comp == ICAL_NO_COMPONENT){
+	    sub_comp = inner;
+	} else {
+	    sub_comp = icalcomponent_get_first_component(inner,w->comp);
+	    if(sub_comp == 0){
+		return 0;
+	    }
+	}	   
+
+	this_clause = 0;
+	local_pass = 0;
+	for(prop = icalcomponent_get_first_property(sub_comp,w->prop);
+	    prop != 0;
+	    prop = icalcomponent_get_next_property(sub_comp,w->prop)){
+	    icalvalue* prop_value;
+	    icalgaugecompare relation;
+
+	    prop_value = icalproperty_get_value(prop);
+
+	    relation = (icalgaugecompare)icalvalue_compare(prop_value,v);
+	    
+	    if (relation  == w->compare){ 
+		local_pass++; 
+	    } else if (w->compare == ICALGAUGECOMPARE_LESSEQUAL && 
+		       ( relation  == ICALGAUGECOMPARE_LESS ||
+			 relation  == ICALGAUGECOMPARE_EQUAL)) {
+		local_pass++;
+	    } else if (w->compare == ICALGAUGECOMPARE_GREATEREQUAL && 
+		       ( relation  == ICALGAUGECOMPARE_GREATER ||
+			 relation  == ICALGAUGECOMPARE_EQUAL)) {
+		local_pass++;
+	    } else if (w->compare == ICALGAUGECOMPARE_NOTEQUAL && 
+		       ( relation  == ICALGAUGECOMPARE_GREATER ||
+			 relation  == ICALGAUGECOMPARE_LESS)) {
+		local_pass++;
+	    } else {
+		local_pass = 0;
+	    }
+	}
+    
+	this_clause = local_pass > 0 ? 1 : 0;
+
+	/* Now look at the logic operator for this clause to see how
+           the value should be merge with the previous clause */
+
+	if(w->logic == ICALGAUGELOGIC_AND){
+	    last_clause = this_clause && last_clause;
+	} else if(w->logic == ICALGAUGELOGIC_AND) {
+	    last_clause = this_clause || last_clause;
+	} else {
+	    last_clause = this_clause;
+	}
+    }
+
+    return last_clause;
+
+}
+    
+
+void icalgauge_dump(icalcomponent* gauge)
+{
+
+    pvl_elem *p;
+    struct icalgauge_impl *impl = (struct icalgauge_impl*)gauge;
+  
+  
+    printf("--- Select ---\n");
+    for(p = pvl_head(impl->select);p!=0;p=pvl_next(p)){
+	struct icalgauge_where *w = pvl_data(p);
+
+	if(w->comp != ICAL_NO_COMPONENT){
+	    printf("%s ",icalenum_component_kind_to_string(w->comp));
+	}
+
+	if(w->prop != ICAL_NO_PROPERTY){
+	    printf("%s ",icalenum_property_kind_to_string(w->prop));
+	}
+	
+	if (w->compare != ICALGAUGECOMPARE_NONE){
+	    printf("%d ",w->compare);
+	}
+
+
+	if (w->value!=0){
+	    printf("%s",w->value);
+	}
+
+
+	printf("\n");
+    }
+
+    printf("--- From ---\n");
+    for(p = pvl_head(impl->from);p!=0;p=pvl_next(p)){
+	icalcomponent_kind k = (icalcomponent_kind)pvl_data(p);
+
+	printf("%s\n",icalenum_component_kind_to_string(k));
+    }
+
+    printf("--- Where ---\n");
+    for(p = pvl_head(impl->where);p!=0;p=pvl_next(p)){
+	struct icalgauge_where *w = pvl_data(p);
+
+	if(w->logic != ICALGAUGELOGIC_NONE){
+	    printf("%d ",w->logic);
+	}
+	
+	if(w->comp != ICAL_NO_COMPONENT){
+	    printf("%s ",icalenum_component_kind_to_string(w->comp));
+	}
+
+	if(w->prop != ICAL_NO_PROPERTY){
+	    printf("%s ",icalenum_property_kind_to_string(w->prop));
+	}
+	
+	if (w->compare != ICALGAUGECOMPARE_NONE){
+	    printf("%d ",w->compare);
+	}
+
+
+	if (w->value!=0){
+	    printf("%s",w->value);
+	}
+
+
+	printf("\n");
+    }
+
+    
+}
+