Annotation of parser3/src/types/pa_vtable.C, revision 1.40
1.1 parser 1: /** @file
2: Parser: @b table class.
3:
1.37 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.11 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.14 paf 6: */
1.1 parser 7:
8: #include "pa_vtable.h"
9: #include "pa_vstring.h"
1.5 parser 10: #include "pa_vhash.h"
1.22 paf 11: #include "pa_vvoid.h"
1.1 parser 12:
1.40 ! moko 13: volatile const char * IDENT_PA_VTABLE_C="$Id: pa_vtable.C,v 1.39 2015/07/28 14:42:44 moko Exp $" IDENT_PA_VTABLE_H;
1.39 moko 14:
15: // limits
16: #define MAX_COLUMNS 20000 // equal to MAX_LOOPS
1.37 moko 17:
1.40 ! moko 18: const String table_fields_name(TABLE_FIELDS_ELEMENT_NAME);
! 19:
1.3 parser 20: #ifndef DOXYGEN
1.1 parser 21: struct Record_info {
1.22 paf 22: Table* table;
23: HashStringValue* hash;
1.1 parser 24: };
1.3 parser 25: #endif
1.29 misha 26:
27: static void store_column_item_to_hash(const String* column_name, Record_info *info) {
28: const String* column_item=info->table->item(*column_name);
29: info->hash->put(*column_name,
30: (column_item && !column_item->is_empty())
31: ?new VString(*column_item)
32: :new VString()
33: );
1.1 parser 34: }
1.29 misha 35:
1.22 paf 36: Value* VTable::fields_element() {
1.29 misha 37: Value& result=*new VHash;
1.22 paf 38: Table& ltable=table();
1.29 misha 39: if(!ltable.count())
40: return &result;
41:
42: HashStringValue* hash=result.get_hash();
43:
44: if(Table::columns_type columns=ltable.columns()) { // named
45: Record_info record_info={<able, hash};
1.1 parser 46: columns->for_each(store_column_item_to_hash, &record_info);
1.29 misha 47: } else { // nameless
48: size_t row_size=ltable[ltable.current()]->count(); // number of columns in current row
49: for(size_t index=0; index<row_size; index++){
50: const String* column_item=ltable.item(index);
51: hash->put(String::Body::Format(index),
52: (column_item && !column_item->is_empty())
53: ?new VString(*column_item)
54: :new VString()
55: );
56: }
1.1 parser 57: }
1.29 misha 58:
59: return &result;
1.1 parser 60: }
61:
1.31 misha 62: Value* VTable::get_element(const String& aname) {
1.40 ! moko 63: #ifdef FEATURE_GET_ELEMENT4CALL
1.1 parser 64: // fields
1.40 ! moko 65: if(aname==table_fields_name)
1.1 parser 66: return fields_element();
67:
1.40 ! moko 68: // columns first
! 69: if(ftable) {
! 70: int index=ftable->column_name2index(aname, false);
! 71: if(index>=0) // column aname|number valid
! 72: {
! 73: const String* string=ftable->item(index); // there is such column
! 74: return new VString(string ? *string : String::Empty);
! 75: }
! 76: }
! 77:
1.2 parser 78: // methods
1.31 misha 79: if(Value* result=VStateless_object::get_element(aname))
1.2 parser 80: return result;
81:
1.40 ! moko 82: throw Exception(PARSER_RUNTIME, &aname, "column not found");
! 83: }
! 84:
! 85: Value* VTable::get_element4call(const String& aname) {
! 86: #endif
! 87: // fields
! 88: if(aname==table_fields_name)
! 89: return fields_element();
! 90:
! 91: // methods first
! 92: if(Value* result=VStateless_object::get_element(aname))
! 93: return result;
! 94:
1.1 parser 95: // columns
96: if(ftable) {
1.16 paf 97: int index=ftable->column_name2index(aname, false);
98: if(index>=0) // column aname|number valid
1.32 pretende 99: {
100: const String* string=ftable->item(index); // there is such column
101: return new VString(string ? *string : String::Empty);
102: }
1.1 parser 103: }
104:
1.39 moko 105: throw Exception(PARSER_RUNTIME, &aname, "column not found");
1.1 parser 106: }
1.33 misha 107:
1.39 moko 108: const VJunction* VTable::put_element(const String& aname, Value* avalue) {
109: if(ftable) {
110: int index=ftable->column_name2index(aname, false);
111: if(index>=0) // column aname|number valid
112: {
113: if(index > MAX_COLUMNS)
114: throw Exception(PARSER_RUNTIME, &aname, "too big column number");
115: if(!avalue->is_string())
116: throw Exception(PARSER_RUNTIME, 0, "column value must be string");
117: ftable->put_item(index, avalue->get_string());
118: return PUT_ELEMENT_REPLACED_ELEMENT;
119: }
120: }
121:
122: throw Exception(PARSER_RUNTIME, &aname, "column not found");
123: }
1.36 moko 124:
125: String& VTable::get_json_string_array(String& result, const char *indent) {
126: // [
127: // ["c1", "c2", "c3" ...] || null (for nameless),
128: // ["v11", "v12", "v13" ...],
129: // ["v21", "v22", "v23" ...],
130: // ...
131: // ]
1.33 misha 132: Table& ltable=table();
1.35 moko 133:
1.36 moko 134: // columns
135: if(ltable.columns()){
136: // named
137: indent ? result << "\n\t" << indent << "[\"" : result << "\n[\"";
138:
139: bool need_delim=false;
140: for(Array_iterator<const String*> c(*ltable.columns()); c.has_next(); ) {
141: if(need_delim)
142: result << "\",\"";
143: result.append(*c.next(), String::L_JSON, true/*forced lang*/);
144: need_delim=true;
145: }
146: result << "\"]";
147: } else {
148: // nameless
149: indent ? result << "\n\t" << indent << "null" : result << "\nnull";
150: }
151:
152: // data
153: if(ltable.count()){
154: result << ",";
155: for(Array_iterator<ArrayString*> r(ltable); r.has_next(); ) {
156: indent ? result << "\n\t" << indent << "[\"" : result << "\n[\"";
1.33 misha 157: bool need_delim=false;
1.36 moko 158: for(Array_iterator<const String*> c(*r.next()); c.has_next(); ) {
1.33 misha 159: if(need_delim)
160: result << "\",\"";
161: result.append(*c.next(), String::L_JSON, true/*forced lang*/);
162: need_delim=true;
163: }
1.36 moko 164: r.has_next() ? result << "\"]," : result << "\"]";
1.35 moko 165: }
1.36 moko 166: }
167:
168: result << "\n" << indent;
169: return result;
170: }
171:
172: String& VTable::get_json_string_object(String& result, const char *indent) {
173: // [
174: // {"c1":"v11", "c2":"v12", "c3":"v13"},
175: // {"c1":"v21", "c2":"v22", "c3":"v23"},
176: // ...
177: // ]
178: Table& ltable=table();
179: ArrayString* columns=ltable.columns();
180: size_t columns_count = (columns) ? columns->count() : 0;
181:
182: for(Array_iterator<ArrayString*> r(ltable); r.has_next(); ) {
183: indent ? result << "\n\t" << indent << "{\"" : result << "\n{\"";
1.33 misha 184:
1.36 moko 185: ArrayString* row=r.next();
186: for(size_t index=0; index<row->count(); index++){
187: if(index)
188: result << "\",\"";
189: result.append(index < columns_count ? *columns->get(index) : String(format(index, 0)), String::L_JSON, true/*forced lang*/);
190: result << "\":\"";
191: result.append(*row->get(index), String::L_JSON, true/*forced lang*/);
1.33 misha 192: }
1.36 moko 193: r.has_next() ? result << "\"}," : result << "\"}\n" << indent;
194: }
195: return result;
196: }
197:
198: String& VTable::get_json_string_compact(String& result, const char *indent) {
199: // [
200: // "v11",
201: // ["v21", "v22", "v23" ...],
202: // ...
203: // ]
204: Table& ltable=table();
205:
206: for(Array_iterator<ArrayString*> r(ltable); r.has_next(); ) {
207: ArrayString& line=*r.next();
208: if (line.count()==1){
209: indent ? result << "\n\t" << indent << "\"" : result << "\n\"";
1.33 misha 210:
1.36 moko 211: result.append(*line[0], String::L_JSON, true/*forced lang*/);
212: r.has_next() ? result << "\"," : result << "\"\n" << indent;
213: } else {
214: indent ? result << "\n\t" << indent << "[\"" : result << "\n[\"";
1.33 misha 215:
1.36 moko 216: bool need_delim=false;
217: for(Array_iterator<const String*> c(line); c.has_next(); ) {
218: if(need_delim)
1.33 misha 219: result << "\",\"";
1.36 moko 220: result.append(*c.next(), String::L_JSON, true/*forced lang*/);
221: need_delim=true;
1.33 misha 222: }
1.36 moko 223: r.has_next() ? result << "\"]," : result << "\"]\n" << indent;
224: }
225: }
226: return result;
227: }
228:
1.38 moko 229: const String* VTable::get_json_string(Json_options& options) {
1.36 moko 230: String* result = new String("[", String::L_AS_IS);
1.33 misha 231:
1.38 moko 232: switch(options.table){
1.36 moko 233: case Json_options::T_ARRAY:
1.38 moko 234: result=&get_json_string_array(*result, options.indent);
1.36 moko 235: break;
236: case Json_options::T_OBJECT:
1.38 moko 237: result=&get_json_string_object(*result, options.indent);
1.36 moko 238: break;
239: case Json_options::T_COMPACT:
1.38 moko 240: result=&get_json_string_compact(*result, options.indent);
1.36 moko 241: break;
1.33 misha 242: }
243:
1.36 moko 244: *result << "]";
245: return result;
246: }
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