Initial revision

1 files changed, 245 insertions, 0 deletions

diff --git a/libical/src/libicalss/icalssyacc.y b/libical/src/libicalss/icalssyacc.y
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+++ b/libical/src/libicalss/icalssyacc.y
@@ -0,0 +1,245 @@
+%{
+/* -*- Mode: C -*-
+  ======================================================================
+  FILE: icalssyacc.y
+  CREATOR: eric 08 Aug 2000
+  
+  DESCRIPTION:
+  
+  $Id$
+  $Locker$
+
+(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 <stdlib.h>
+#include <string.h> /* for strdup() */
+#include <limits.h> /* for SHRT_MAX*/
+#include "ical.h"
+#include "pvl.h"
+#include "icalgauge.h"
+#include "icalgaugeimpl.h"
+
+
+extern struct icalgauge_impl *icalss_yy_gauge;
+
+void ssyacc_add_where(struct icalgauge_impl* impl, char* prop, 
+	icalgaugecompare compare , char* value);
+void ssyacc_add_select(struct icalgauge_impl* impl, char* str1);
+void ssyacc_add_from(struct icalgauge_impl* impl, char* str1);
+void set_logic(struct icalgauge_impl* impl,icalgaugelogic l);
+void sserror(char *s); /* Don't know why I need this.... */
+
+
+
+%}
+
+%union {
+	char* v_string;
+}
+
+
+%token <v_string> STRING
+%token SELECT FROM WHERE COMMA QUOTE EQUALS NOTEQUALS  LESS GREATER LESSEQUALS
+%token GREATEREQUALS AND OR EOL END
+
+%%
+
+query_min: SELECT select_list FROM from_list WHERE where_list
+	   | error { 
+		 icalparser_clear_flex_input();
+                 yyclearin;
+           }	
+	   ;	
+
+select_list:
+	STRING {ssyacc_add_select(icalss_yy_gauge,$1);}
+	| select_list COMMA STRING {ssyacc_add_select(icalss_yy_gauge,$3);}
+	;
+
+
+from_list:
+	STRING {ssyacc_add_from(icalss_yy_gauge,$1);}
+	| from_list COMMA STRING {ssyacc_add_from(icalss_yy_gauge,$3);}
+	;
+
+where_clause:
+	/* Empty */
+	| STRING EQUALS STRING {ssyacc_add_where(icalss_yy_gauge,$1,ICALGAUGECOMPARE_EQUAL,$3); }
+	
+	| STRING NOTEQUALS STRING {ssyacc_add_where(icalss_yy_gauge,$1,ICALGAUGECOMPARE_NOTEQUAL,$3); }
+	| STRING LESS STRING {ssyacc_add_where(icalss_yy_gauge,$1,ICALGAUGECOMPARE_LESS,$3); }
+	| STRING GREATER STRING {ssyacc_add_where(icalss_yy_gauge,$1,ICALGAUGECOMPARE_GREATER,$3); }
+	| STRING LESSEQUALS STRING {ssyacc_add_where(icalss_yy_gauge,$1,ICALGAUGECOMPARE_LESSEQUAL,$3); }
+	| STRING GREATEREQUALS STRING {ssyacc_add_where(icalss_yy_gauge,$1,ICALGAUGECOMPARE_GREATEREQUAL,$3); }
+	;
+
+where_list:
+	where_clause {set_logic(icalss_yy_gauge,ICALGAUGELOGIC_NONE);}
+	| where_list AND where_clause {set_logic(icalss_yy_gauge,ICALGAUGELOGIC_AND);} 
+	| where_list OR where_clause {set_logic(icalss_yy_gauge,ICALGAUGELOGIC_OR);}
+	;
+
+
+%%
+
+void ssyacc_add_where(struct icalgauge_impl* impl, char* str1, 
+	icalgaugecompare compare , char* value_str)
+{
+
+    struct icalgauge_where *where;
+    char *compstr, *propstr, *c, *s,*l;
+    
+    if ( (where = malloc(sizeof(struct icalgauge_where))) ==0){
+	icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+	return;
+    }
+
+    memset(where,0,sizeof(struct icalgauge_where));
+    where->logic = ICALGAUGELOGIC_NONE;
+    where->compare = ICALGAUGECOMPARE_NONE;
+    where->comp = ICAL_NO_COMPONENT;
+    where->prop = ICAL_NO_PROPERTY;
+
+    /* remove enclosing quotes */
+    s = value_str;
+    if(*s == '\''){
+	s++;
+    }
+    l = s+strlen(s)-1;
+    if(*l == '\''){
+	*l=0;
+    }
+	
+    where->value = strdup(s);
+
+    /* Is there a period in str1 ? If so, the string specified both a
+       component and a property*/
+    if( (c = strrchr(str1,'.')) != 0){
+	compstr = str1;
+	propstr = c+1;
+	*c = '\0';
+    } else {
+	compstr = 0;
+	propstr = str1;
+    }
+
+
+    /* Handle the case where a component was specified */
+    if(compstr != 0){
+	where->comp = icalenum_string_to_component_kind(compstr);
+    } else {
+	where->comp = ICAL_NO_COMPONENT;
+    }
+
+    where->prop = icalenum_string_to_property_kind(propstr);    
+
+    where->compare = compare;
+
+    if(where->value == 0){
+	icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+	free(where->value);
+	return;
+    }
+
+    pvl_push(impl->where,where);
+}
+
+void set_logic(struct icalgauge_impl* impl,icalgaugelogic l)
+{
+    pvl_elem e = pvl_tail(impl->where);
+    struct icalgauge_where *where = pvl_data(e);
+
+    where->logic = l;
+   
+}
+
+
+
+void ssyacc_add_select(struct icalgauge_impl* impl, char* str1)
+{
+    char *c, *compstr, *propstr;
+    struct icalgauge_where *where;
+    
+    /* Uses only the prop and comp fields of the where structure */
+    if ( (where = malloc(sizeof(struct icalgauge_where))) ==0){
+	icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+	return;
+    }
+
+    memset(where,0,sizeof(struct icalgauge_where));
+    where->logic = ICALGAUGELOGIC_NONE;
+    where->compare = ICALGAUGECOMPARE_NONE;
+    where->comp = ICAL_NO_COMPONENT;
+    where->prop = ICAL_NO_PROPERTY;
+
+    /* Is there a period in str1 ? If so, the string specified both a
+       component and a property*/
+    if( (c = strrchr(str1,'.')) != 0){
+	compstr = str1;
+	propstr = c+1;
+	*c = '\0';
+    } else {
+	compstr = 0;
+	propstr = str1;
+    }
+
+
+    /* Handle the case where a component was specified */
+    if(compstr != 0){
+	where->comp = icalenum_string_to_component_kind(compstr);
+    } else {
+	where->comp = ICAL_NO_COMPONENT;
+    }
+
+
+    /* If the property was '*', then accept all properties */
+    if(strcmp("*",propstr) == 0) {
+	where->prop = ICAL_ANY_PROPERTY; 	    
+    } else {
+	where->prop = icalenum_string_to_property_kind(propstr);    
+    }
+    
+
+    if(where->prop == ICAL_NO_PROPERTY){
+	icalgauge_free(where);
+	icalerror_set_errno(ICAL_BADARG_ERROR);
+	return;
+    }
+
+    pvl_push(impl->select,where);
+}
+
+void ssyacc_add_from(struct icalgauge_impl* impl, char* str1)
+{
+    icalcomponent_kind ckind;
+
+    ckind = icalenum_string_to_component_kind(str1);
+
+    if(ckind == ICAL_NO_COMPONENT){
+	assert(0);
+    }
+
+    pvl_push(impl->from,(void*)ckind);
+
+}
+
+
+void sserror(char *s){
+    fprintf(stderr,"Parse error \'%s\'\n", s);
+}