Change lfta code generation form C to C++

[com/gs-lite.git] / src / lib / gscplftaaux / rts_udaf.c

diff --git a/src/lib/gscplftaaux/rts_udaf.c b/src/lib/gscplftaaux/rts_udaf.c
index 460cd3f..7d89295 100644 (file)
--- a/src/lib/gscplftaaux/rts_udaf.c
+++ b/src/lib/gscplftaaux/rts_udaf.c
@@ -482,3 +482,62 @@ void running_array_aggr_lfta_LFTA_AGGR_OUTPUT_(struct gs_string* res, char* scra
 
 void running_array_aggr_lfta_LFTA_AGGR_DESTROY_(char* scratch) { }
 
+
+
+/////////////////////////////////////////////////////////
+// ==============================================================
+//             other rts functions.
+
+// sum_int_in_list
+// given e.g. '34|45|56' and sepchar '|', return 135.
+// gracefully handle empty entries, e.g. '|8|' should return 8
+gs_int64_t sum_uint_in_list(struct gs_string *list, struct gs_string *sepchar){
+       gs_int64_t ret = 0;
+       gs_int64_t val = 0;
+       gs_uint8_t sep;
+       gs_uint8_t v;
+       int c;
+
+       if(sepchar->length < 1)
+               return 0;
+       sep = sepchar->data[0];
+
+       for(c=0;c<list->length;++c){
+               v = list->data[c];
+               if(v==sep){
+                       ret+=val;
+                       val = 0;
+               }else{
+                       val = 10*val + (v>='0' && v<='9')*(v-'0');
+               }
+       }
+       ret += val;
+       return ret;
+}
+
+//     Convert an string to an integer
+gs_int64_t to_llong(struct gs_string *v){
+       gs_int64_t ret=0;
+       gs_uint8_t d;
+       int c;
+       int neg=1;
+
+       if(v->length < 1)
+               return 0;
+       d = v->data[0];
+       if(d=='-'){
+               neg=-1;
+       }else{
+               ret = (d>='0' && d<='9')*(d-'0');
+       }
+
+       for(c=1;c<v->length;++c){
+               d = v->data[c];
+               ret = 10*ret+(d>='0' && d<='9')*(d-'0');
+       }
+
+       return neg*ret;
+}
+
+       
+