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1.1 moko 1: /** @file
2: Parser: @b array parser class.
3:
4: Copyright (c) 2001-2023 Art. Lebedev Studio (http://www.artlebedev.com)
5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
6: */
7:
8: #include "classes.h"
9: #include "pa_vmethod_frame.h"
10:
11: #include "pa_request.h"
12: #include "pa_charsets.h"
13: #include "pa_varray.h"
14: #include "pa_vvoid.h"
15: #include "pa_sql_connection.h"
16: #include "pa_vtable.h"
17: #include "pa_vbool.h"
18: #include "pa_vmethod_frame.h"
19:
1.14 ! moko 20: volatile const char * IDENT_ARRAY_C="$Id: array.C,v 1.13 2024/09/30 19:03:53 moko Exp $";
1.1 moko 21:
22: // class
23:
24: class MArray: public Methoded {
25: public: // VStateless_class
26: Value* create_new_value(Pool&) { return new VArray; }
27:
28: public:
29: MArray();
30: };
31:
32: // global variable
33:
34: DECLARE_CLASS_VAR(array, new MArray);
35:
1.5 moko 36: const char* const PARAM_ARRAY_OR_HASH = "param must be array or hash";
1.7 moko 37: const char* const PARAM_INDEX = "index must be integer";
1.5 moko 38:
1.1 moko 39: // methods
40:
41: static void _create_or_add(Request& r, MethodParams& params) {
42: if(params.count()) {
1.5 moko 43: Value& vsrc=params.as_no_junction(0, PARAM_ARRAY_OR_HASH);
1.1 moko 44: VArray& self=GET_SELF(r, VArray);
45: ArrayValue& self_array=self.array();
46:
1.3 moko 47: if(VArray* src=dynamic_cast<VArray*>(&vsrc)) {
1.6 moko 48: if(src==&self)
1.14 ! moko 49: return;
! 50: if(self_array.count()){
! 51: for(ArrayValue::Iterator i(src->array()); i; i.next()){
! 52: if(i.value())
! 53: self_array.put(i.index(), i.value());
! 54: }
! 55: } else {
! 56: self_array.append(src->array());
! 57: }
1.1 moko 58: } else {
59: HashStringValue* src_hash=vsrc.get_hash();
1.5 moko 60: if(!src_hash)
61: return;
62: for(HashStringValue::Iterator i(*src_hash); i; i.next()){
1.7 moko 63: self_array.put(VArray::index(i.key()), i.value());
1.5 moko 64: }
1.1 moko 65: }
1.4 moko 66: self.invalidate();
1.1 moko 67: }
68: }
69:
1.6 moko 70: static ArrayValue::Action_options get_action_options(Request& r, MethodParams& params, size_t options_index) {
71: ArrayValue::Action_options result;
72: if(params.count() <= options_index)
73: return result;
74:
75: HashStringValue* options=params.as_hash(options_index);
76: if(!options)
77: return result;
78:
79: result.defined=true;
80: int valid_options=0;
81:
82: if(Value* voffset=options->get(sql_offset_name)) {
83: valid_options++;
1.8 moko 84: int offset=r.process(*voffset).as_int();
85: result.offset=offset < 0 ? 0 : offset;
1.6 moko 86: }
87: if(Value* vlimit=options->get(sql_limit_name)) {
88: valid_options++;
1.8 moko 89: int limit=r.process(*vlimit).as_int();
90: result.limit=limit < 0 ? 0: limit;
1.6 moko 91: }
92:
93: if(valid_options!=options->count())
94: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
95:
96: return result;
97: }
98:
99: static void _join(Request& r, MethodParams& params) {
1.7 moko 100: Value& vsrc=params.as_no_junction(0, PARAM_ARRAY_OR_HASH);
1.6 moko 101: ArrayValue::Action_options o=get_action_options(r, params, 1);
102:
103: VArray& self=GET_SELF(r, VArray);
104: ArrayValue& self_array=self.array();
105:
106: if(VArray* src=dynamic_cast<VArray*>(&vsrc)) {
107: if(src==&self)
108: throw Exception(PARSER_RUNTIME, 0, "source and destination are the same array");
109:
110: if(o.defined){
111: for(ArrayValue::Iterator i(src->array()); i; i.next()){
112: if(i.value()){
113: if(o.offset > 0){
114: o.offset--;
115: continue;
116: }
117: if(o.limit-- == 0)
118: break;
119: self_array+=i.value();
120: }
121: }
122: } else {
123: for(ArrayValue::Iterator i(src->array()); i; i.next()){
124: if(i.value())
125: self_array+=i.value();
126: }
127: }
1.7 moko 128: } else {
129: HashStringValue* src_hash=vsrc.get_hash();
130: if(!src_hash)
131: return;
132: if(o.defined){
133: for(HashStringValue::Iterator i(*src_hash); i; i.next()){
134: if(o.offset > 0){
135: o.offset--;
136: continue;
137: }
138: if(o.limit-- == 0)
139: break;
140: self_array+=i.value();
141: }
142: } else {
143: for(HashStringValue::Iterator i(*src_hash); i; i.next()){
144: self_array+=i.value();
145: }
146: }
147: }
148: self.invalidate();
1.6 moko 149: }
150:
1.11 moko 151: #ifndef DOXYGEN
152:
153: #define STRING(str) ((str) ? *new String(str, String::L_TAINTED /* no length as 0x00 can be inside */) : String::Empty)
154:
155: class SparseArray_sql_event_handlers: public SQL_Driver_query_event_handlers {
156: bool distinct;
157: ArrayValue& result;
158: Value* row_value;
159: int column_index;
1.12 moko 160: ArrayString* columns;
1.11 moko 161: bool one_bool_column;
162: Table2hash_value_type value_type;
163: int columns_count;
164: public:
165: Table* empty;
166: public:
167: SparseArray_sql_event_handlers(bool adistinct, ArrayValue& aresult, Table2hash_value_type avalue_type):
168: distinct(adistinct),
169: result(aresult),
170: row_value(0),
171: column_index(0),
1.12 moko 172: columns(new ArrayString),
1.11 moko 173: one_bool_column(false),
174: value_type(avalue_type),
175: empty(0) {
176: }
177:
178: bool add_column(SQL_Error& error, const char* str, size_t ) {
179: try {
1.12 moko 180: if(columns_count){
181: // another query in multi_statements mode
182: columns=new ArrayString;
183: columns_count=0;
184: }
185: *columns+=&STRING(str);
1.11 moko 186: return false;
187: } catch(...) {
188: error=SQL_Error("exception occurred in Hash_sql_event_handlers::add_column");
189: return true;
190: }
191: }
192:
193: bool before_rows(SQL_Error& error) {
1.12 moko 194: columns_count=columns->count();
195: if(columns_count<1) {
1.11 moko 196: error=SQL_Error("no columns");
197: return true;
198: }
1.12 moko 199: if(columns_count==1) {
1.11 moko 200: one_bool_column=true;
201: } else {
202: switch(value_type){
203: case C_STRING: {
1.12 moko 204: if(columns_count>2){
205: error=SQL_Error("only 2 columns allowed for $.type[string] and $.sparse(true)");
1.11 moko 206: return true;
207: }
208: break;
209: }
210: case C_TABLE: {
211: // create empty table which we'll copy later
1.12 moko 212: empty=new Table(columns);
1.11 moko 213: break;
214: }
215: }
216: }
217: return false;
218: }
219:
220: bool add_row(SQL_Error& /*error*/) {
221: column_index=0;
222: return false;
223: }
224:
225: bool add_row_cell(SQL_Error& error, const char *str, size_t ) {
226: try {
1.12 moko 227: if(column_index==columns_count){
228: // should never happen, buggy driver case
229: error=SQL_Error("columns index exceed the columns count");
230: return true;
231: }
232:
1.11 moko 233: bool duplicate=false;
234: if(one_bool_column) {
235: size_t index=str ? pa_atoui(str) : 0;
236: duplicate=result.put_dont_replace(index, &VBool::get(true)); // put. existed?
237: } else if(column_index==0) {
238: size_t index=str ? pa_atoui(str) : 0;
239: switch(value_type){
240: case C_HASH: {
241: VHash* row_vhash=new VHash;
242: row_value=row_vhash;
243: duplicate=result.put_dont_replace(index, row_vhash); // put. existed?
244: break;
245: }
246: case C_STRING: {
247: VString* row_vstring=new VString();
248: row_value=row_vstring;
249: duplicate=result.put_dont_replace(index, row_vstring); // put. existed?
250: break;
251: }
252: case C_TABLE: {
253: VTable* vtable=(VTable*)result.get(index);
254:
255: if(vtable) { // table with this key exist?
256: if(!distinct) {
257: duplicate=true;
258: break;
259: }
260: } else {
261: // no? creating table of same structure as source
262: Table::Action_options table_options(0, 0);
263: vtable=new VTable(new Table(*empty, table_options/*no rows, just structure*/));
264: result.put(index, vtable); // put
265: }
266: ArrayString* row=new ArrayString(columns_count);
267: *row+=&STRING(str);
268: *vtable->get_table()+=row;
1.12 moko 269: row_value=(Value*)row;
1.11 moko 270: break;
271: }
272: }
273: } else {
274: const String& cell=STRING(str);
275: switch(value_type) {
276: case C_HASH: {
1.12 moko 277: row_value->get_hash()->put(*columns->get(column_index), new VString(cell));
1.11 moko 278: break;
279: }
280: case C_STRING: {
281: VString* row_string=(VString*)row_value;
282: row_string->set_string(cell);
283: break;
284: }
285: case C_TABLE: {
286: ArrayString* row=(ArrayString*)row_value;
287: *row+=&cell;
288: break;
289: }
290: }
291: }
292:
293: if(duplicate & !distinct) {
294: error=SQL_Error("duplicate key");
295: return true;
296: }
297:
298: column_index++;
299: return false;
300: } catch(const Exception& e) {
301: error=SQL_Error(e.type(), e.comment());
302: return true;
303: } catch(...) {
304: error=SQL_Error("exception occurred in Hash_sql_event_handlers::add_row_cell");
305: return true;
306: }
307: }
308: };
309:
310: class Array_sql_event_handlers: public SQL_Driver_query_event_handlers {
311: ArrayValue& result;
312: Value* row_value;
313: int column_index;
1.12 moko 314: ArrayString* columns;
1.11 moko 315: Table2hash_value_type value_type;
316: int columns_count;
317: public:
318: Table* empty;
319: public:
320: Array_sql_event_handlers(ArrayValue& aresult, Table2hash_value_type avalue_type):
321: result(aresult),
322: row_value(0),
323: column_index(0),
1.12 moko 324: columns(new ArrayString),
1.11 moko 325: value_type(avalue_type),
326: empty(0) {
327: }
328:
329: bool add_column(SQL_Error& error, const char* str, size_t ) {
330: try {
1.12 moko 331: if(columns_count){
332: // another query in multi_statements mode
333: columns=new ArrayString;
334: columns_count=0;
335: }
336: *columns+=&STRING(str);
1.11 moko 337: return false;
338: } catch(...) {
339: error=SQL_Error("exception occurred in Hash_sql_event_handlers::add_column");
340: return true;
341: }
342: }
343:
344: bool before_rows(SQL_Error& error) {
1.12 moko 345: columns_count=columns->count();
346: if(columns_count<1) {
1.11 moko 347: error=SQL_Error("no columns");
348: return true;
349: }
350: switch(value_type){
351: case C_STRING: {
1.12 moko 352: if(columns_count>1){
353: error=SQL_Error("only one column allowed for $.type[string]");
1.11 moko 354: return true;
355: }
356: break;
357: }
358: case C_TABLE: {
359: // create empty table which we'll copy later
1.12 moko 360: empty=new Table(columns);
1.11 moko 361: break;
362: }
363: }
364: return false;
365: }
366:
367: bool add_row(SQL_Error& /*error*/) {
368: column_index=0;
369: return false;
370: }
371:
372: bool add_row_cell(SQL_Error& error, const char *str, size_t ) {
373: try {
1.12 moko 374: if(column_index==columns_count){
375: // should never happen, buggy driver case
376: error=SQL_Error("columns index exceed the columns count");
377: return true;
378: }
379:
1.11 moko 380: if(column_index==0) {
381: switch(value_type){
382: case C_HASH: {
383: VHash* row_vhash=new VHash;
384: row_value=row_vhash;
385: result+=row_vhash;
386: break;
387: }
388: case C_STRING: {
389: VString* row_vstring=new VString();
390: row_value=row_vstring;
391: result+=row_vstring;
392: break;
393: }
394: case C_TABLE: {
395: // creating table of same structure as source
396: Table::Action_options table_options(0, 0);
397: VTable* vtable=new VTable(new Table(*empty, table_options/*no rows, just structure*/));
398: ArrayString* row=new ArrayString(columns_count);
399: *vtable->get_table()+=row;
1.12 moko 400: row_value=(Value*)row;
401: result+=vtable;
1.11 moko 402: break;
403: }
404: }
405: }
406:
407: const String& cell=STRING(str);
408: switch(value_type) {
409: case C_HASH: {
1.12 moko 410: row_value->get_hash()->put(*columns->get(column_index), new VString(cell));
1.11 moko 411: break;
412: }
413: case C_STRING: {
414: VString* row_string=(VString*)row_value;
415: row_string->set_string(cell);
416: break;
417: }
418: case C_TABLE: {
419: ArrayString* row=(ArrayString*)row_value;
420: *row+=&cell;
421: break;
422: }
423: }
424:
425: column_index++;
426: return false;
427: } catch(const Exception& e) {
428: error=SQL_Error(e.type(), e.comment());
429: return true;
430: } catch(...) {
431: error=SQL_Error("exception occurred in Hash_sql_event_handlers::add_row_cell");
432: return true;
433: }
434: }
435: };
436:
437: #endif
438:
439: extern Table2hash_value_type get_value_type(Value& vvalue_type);
440: extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders);
441: extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders);
442:
443: static void _sql(Request& r, MethodParams& params) {
444: Value& statement=params.as_junction(0, "statement must be code");
445:
446: HashStringValue* bind=0;
447: ulong limit=SQL_NO_LIMIT;
448: ulong offset=0;
449: bool distinct=false;
450: bool sparse=false;
451: Table2hash_value_type value_type=C_HASH;
452: if(params.count()>1)
453: if(HashStringValue* options=params.as_hash(1, "sql options")) {
454: int valid_options=0;
1.13 moko 455: bool distinct_specified=false;
1.11 moko 456: for(HashStringValue::Iterator i(*options); i; i.next() ){
457: String::Body key=i.key();
458: Value* value=i.value();
459: if(key == sql_bind_name) {
460: bind=value->get_hash();
461: valid_options++;
462: } else if(key == sql_limit_name) {
463: limit=(ulong)r.process(*value).as_double();
464: valid_options++;
465: } else if(key == sql_offset_name) {
466: offset=(ulong)r.process(*value).as_double();
467: valid_options++;
468: } else if (key == sql_distinct_name) {
469: distinct=r.process(*value).as_bool();
1.13 moko 470: distinct_specified=true;
1.11 moko 471: valid_options++;
472: } else if (key == sql_value_type_name) {
1.12 moko 473: value_type=get_value_type(r.process(*value));
1.11 moko 474: valid_options++;
475: } else if (key == "sparse") {
1.12 moko 476: sparse=r.process(*value).as_bool();
1.11 moko 477: valid_options++;
478: }
479: }
480: if(valid_options!=options->count())
481: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.13 moko 482: if(distinct_specified && !sparse)
483: throw Exception(PARSER_RUNTIME, 0, "'distinct' option can only be used when $.sparse(true) is specified");
1.11 moko 484: }
485:
486: SQL_Driver::Placeholder* placeholders=0;
487: uint placeholders_count=0;
488: if(bind)
489: placeholders_count=marshal_binds(*bind, placeholders);
490:
491: const String& statement_string=r.process_to_string(statement);
492: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
493:
494: VArray& self=GET_SELF(r, VArray);
1.13 moko 495:
1.11 moko 496: self.array().clear(); self.invalidate(); // just in case if called as method
497:
498: if(sparse){
499: SparseArray_sql_event_handlers handlers(distinct, self.array(), value_type);
500: r.connection()->query(statement_cstr, placeholders_count, placeholders, offset, limit, handlers, statement_string);
501: } else {
502: Array_sql_event_handlers handlers(self.array(), value_type);
503: r.connection()->query(statement_cstr, placeholders_count, placeholders, offset, limit, handlers, statement_string);
504: }
505:
506: if(bind)
507: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
508: }
509:
1.1 moko 510:
511:
1.10 moko 512: static void mid(Request& r, size_t offset=0, size_t limit=ARRAY_OPTION_LIMIT_ALL) {
1.9 moko 513: ArrayValue& array=GET_SELF(r, VArray).array();
1.10 moko 514: if(limit>0){
1.9 moko 515: VArray *result=new VArray;
516: ArrayValue& result_array=result->array();
517: for(ArrayValue::Iterator i(array); i; i.next()){
518: if(i.value()){
1.10 moko 519: if(offset > 0){
520: offset--;
1.9 moko 521: continue;
522: }
1.10 moko 523: if(limit-- == 0)
1.9 moko 524: break;
525: result_array+=i.value();
526: }
527: }
528: r.write(*result);
529: } else {
530: r.write(*new VArray);
531: }
532: }
1.1 moko 533:
1.9 moko 534: static void _left(Request& r, MethodParams& params) {
535: int sn=params.as_int(0, "n must be int", r);
1.10 moko 536: mid(r, 0, sn < 0 ? 0 : sn);
1.9 moko 537: }
538:
539: static void _right(Request& r, MethodParams& params) {
540: int sn=params.as_int(0, "n must be int", r);
541:
542: if(sn>0){
543: size_t used=GET_SELF(r, VArray).array().used();
544: if(sn<used){
1.10 moko 545: mid(r, used-sn, sn);
1.9 moko 546: } else {
1.10 moko 547: mid(r);
1.9 moko 548: }
549: } else {
1.10 moko 550: mid(r, 0, 0);
1.9 moko 551: }
552: }
553:
554: static void _mid(Request& r, MethodParams& params) {
555: const String& string=GET_SELF(r, VString).string();
556:
557: int begin=params.as_int(0, "p must be int", r);
558: if(begin<0)
559: throw Exception(PARSER_RUNTIME, 0, "p(%d) must be >=0", begin);
560:
561: size_t end;
562: size_t length=0;
1.1 moko 563:
1.9 moko 564: if(params.count()>1) {
565: int n=params.as_int(1, "n must be int", r);
566: if(n<0)
567: throw Exception(PARSER_RUNTIME, 0, "n(%d) must be >=0", n);
1.10 moko 568: mid(r, begin, n);
1.9 moko 569: } else {
1.10 moko 570: mid(r, begin);
1.9 moko 571: }
572: }
1.1 moko 573:
574: static void _keys(Request& r, MethodParams& params) {
575: const String* keys_column_name;
576: if(params.count()>0)
577: keys_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
578: else
579: keys_column_name=new String("key");
580:
581: Table::columns_type columns(new ArrayString(1));
582: *columns+=keys_column_name;
583: Table* table=new Table(columns);
584:
585: ArrayValue& array=GET_SELF(r, VArray).array();
586: for(ArrayValue::Iterator i(array); i; i.next()){
587: if(i.value()){
588: Table::element_type row(new ArrayString(1));
589: *row+=new String(i.key(), String::L_TAINTED);
590: *table+=row;
591: }
592: }
593:
594: r.write(*new VTable(table));
595: }
596:
1.5 moko 597: static void _count(Request& r, MethodParams& params) {
598: ArrayValue& array=GET_SELF(r, VArray).array();
599: if(params.count()>0){
600: const String& what=params.as_string(0, PARAMETER_MUST_BE_STRING);
601: if(!what.is_empty()){
602: if(what != "all")
603: throw Exception(PARSER_RUNTIME, &what, "param must be empty or 'all'");
604: return r.write(*new VInt(array.count()));
605: }
606: }
607: r.write(*new VInt(array.used()));
1.1 moko 608: }
609:
1.2 moko 610: static void _append(Request& r, MethodParams& params) {
611: VArray& self=GET_SELF(r, VArray);
612: ArrayValue& array=self.array();
613:
614: int count=params.count();
615:
616: for(int i=0; i<count; i++){
617: array+=&r.process(params[i]);
618: }
1.4 moko 619: self.invalidate();
1.2 moko 620: }
621:
622: static void _insert(Request& r, MethodParams& params) {
623: VArray& self=GET_SELF(r, VArray);
624: ArrayValue& array=self.array();
625:
626: int count=params.count();
1.7 moko 627: size_t index=VArray::index(params.as_int(0, PARAM_INDEX, r));
1.2 moko 628:
629: for(int i=1; i<count; i++){
1.8 moko 630: array.insert(index++, &r.process(params[i]));
1.2 moko 631: }
1.4 moko 632: self.invalidate();
1.2 moko 633: }
634:
1.1 moko 635: static void _delete(Request& r, MethodParams& params) {
1.7 moko 636: VArray& self=GET_SELF(r, VArray);
1.1 moko 637: if(params.count()>0)
1.7 moko 638: self.array().clear(VArray::index(params.as_int(0, PARAM_INDEX, r)));
1.1 moko 639: else
1.7 moko 640: self.array().clear();
641: self.invalidate();
642: }
643:
644: static void _remove(Request& r, MethodParams& params) {
645: VArray& self=GET_SELF(r, VArray);
646: self.array().remove(VArray::index(params.as_int(0, PARAM_INDEX, r)));
647: self.invalidate();
1.1 moko 648: }
649:
650: static void _contains(Request& r, MethodParams& params) {
651: VArray& self=GET_SELF(r, VArray);
1.7 moko 652: bool result=self.contains(VArray::index(params.as_int(0, PARAM_INDEX, r)));
1.1 moko 653: r.write(VBool::get(result));
654: }
655:
1.5 moko 656: static void _for(Request& r, MethodParams& params) {
657: InCycle temp(r);
658:
1.7 moko 659: const String* key_var_name=¶ms.as_string(0, "key-var name must be string");
660: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
661: Value* body_code=¶ms.as_junction(2, "body must be code");
662: Value* delim_maybe_code=params.count()>3 ? ¶ms[3] : 0;
1.5 moko 663: Value& caller=*r.get_method_frame()->caller();
664:
1.7 moko 665: if(key_var_name->is_empty()) key_var_name=0;
1.5 moko 666: if(value_var_name->is_empty()) value_var_name=0;
667:
668: ArrayValue& array=GET_SELF(r, VArray).array();
669:
670: if(delim_maybe_code){ // delimiter set
671: bool need_delim=false;
672: for(ArrayValue::Iterator i(array); i; i.next()){
1.7 moko 673: if(key_var_name){
674: VString* vkey=new VString(*new String(i.key(), String::L_TAINTED));
675: r.put_element(caller, *key_var_name, vkey);
676: }
677:
1.5 moko 678: if(value_var_name)
679: r.put_element(caller, *value_var_name, i.value() ? i.value() : VVoid::get());
680:
681: Value& sv_processed=r.process(*body_code);
682: TempSkip4Delimiter skip(r);
683:
684: const String* s_processed=sv_processed.get_string();
685: if(s_processed && !s_processed->is_empty()) { // we have body
686: if(need_delim) // need delim & iteration produced string?
687: r.write(r.process(*delim_maybe_code));
688: else
689: need_delim=true;
690: }
691:
692: r.write(sv_processed);
693:
694: if(skip.check_break())
695: break;
696: }
697: } else {
698: for(ArrayValue::Iterator i(array); i; i.next()){
1.7 moko 699: if(key_var_name){
700: VString* vkey=new VString(*new String(i.key(), String::L_TAINTED));
701: r.put_element(caller, *key_var_name, vkey);
702: }
703:
1.5 moko 704: if(value_var_name)
705: r.put_element(caller, *value_var_name, i.value() ? i.value() : VVoid::get());
706:
707: r.process_write(*body_code);
708:
709: if(r.check_skip_break())
710: break;
711: }
712: }
713: }
714:
1.1 moko 715: static void _foreach(Request& r, MethodParams& params) {
716: InCycle temp(r);
717:
718: const String* key_var_name=¶ms.as_string(0, "key-var name must be string");
719: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
720: Value* body_code=¶ms.as_junction(2, "body must be code");
1.7 moko 721: Value* delim_maybe_code=params.count()>3 ? ¶ms[3] : 0;
1.1 moko 722: Value& caller=*r.get_method_frame()->caller();
723:
724: if(key_var_name->is_empty()) key_var_name=0;
725: if(value_var_name->is_empty()) value_var_name=0;
726:
727: ArrayValue& array=GET_SELF(r, VArray).array();
728:
729: if(delim_maybe_code){ // delimiter set
730: bool need_delim=false;
731: for(ArrayValue::Iterator i(array); i; i.next()){
732: if(i.value()){
733: if(key_var_name){
734: VString* vkey=new VString(*new String(i.key(), String::L_TAINTED));
735: r.put_element(caller, *key_var_name, vkey);
736: }
737:
738: if(value_var_name)
739: r.put_element(caller, *value_var_name, i.value());
740:
741: Value& sv_processed=r.process(*body_code);
742: TempSkip4Delimiter skip(r);
743:
744: const String* s_processed=sv_processed.get_string();
745: if(s_processed && !s_processed->is_empty()) { // we have body
746: if(need_delim) // need delim & iteration produced string?
747: r.write(r.process(*delim_maybe_code));
748: else
749: need_delim=true;
750: }
751:
752: r.write(sv_processed);
753:
754: if(skip.check_break())
755: break;
756: }
757: }
758: } else {
759: for(ArrayValue::Iterator i(array); i; i.next()){
760: if(i.value()){
761: if(key_var_name){
762: VString* vkey=new VString(*new String(i.key(), String::L_TAINTED));
763: r.put_element(caller, *key_var_name, vkey);
764: }
765:
766: if(value_var_name)
767: r.put_element(caller, *value_var_name, i.value());
768:
769: r.process_write(*body_code);
770:
771: if(r.check_skip_break())
772: break;
773: }
774: }
775: }
776: }
777:
778: #ifndef DOXYGEN
779: struct Array_seq_item : public PA_Allocated {
780: Value *array_data;
781: union {
782: const char *c_str;
783: double d;
784: } value;
785: };
786: #endif
787:
788: static int sort_cmp_string(const void *a, const void *b) {
789: return strcmp(
790: static_cast<const Array_seq_item *>(a)->value.c_str,
791: static_cast<const Array_seq_item *>(b)->value.c_str
792: );
793: }
794: static int sort_cmp_double(const void *a, const void *b) {
795: double va=static_cast<const Array_seq_item *>(a)->value.d;
796: double vb=static_cast<const Array_seq_item *>(b)->value.d;
797: if(va<vb)
798: return -1;
799: else if(va>vb)
800: return +1;
801: else
802: return 0;
803: }
804:
805: static void _sort(Request& r, MethodParams& params){
806: const String& key_var_name=params.as_string(0, "key-var name must be string");
807: const String& value_var_name=params.as_string(1, "value-var name must be string");
808: Value& key_maker=params.as_junction(2, "key-maker must be code");
809: bool reverse=params.count()>3 && params.as_no_junction(3, "order must not be code").as_string()=="desc"; // default=asc
810:
811: const String* key_var=key_var_name.is_empty()? 0 : &key_var_name;
812: const String* value_var=value_var_name.is_empty()? 0 : &value_var_name;
813: VMethodFrame* context=r.get_method_frame()->caller();
814:
815: VArray& self=GET_SELF(r, VArray);
816: ArrayValue& array=self.array();
1.4 moko 817: int count=array.used(); // not array.count()
1.1 moko 818:
819: Array_seq_item* seq=new Array_seq_item[count];
820: int pos=0;
821: bool key_values_are_strings=true;
822:
823: for(ArrayValue::Iterator i(array); i; i.next() ){
824: if(i.value()){
825: if(key_var)
826: r.put_element(*context, *key_var, new VString(*new String(i.key(), String::L_TAINTED)));
827: if(value_var)
828: r.put_element(*context, *value_var, i.value());
829:
830: Value& value=r.process(key_maker);
831: if(pos==0) // determining key values type by first one
832: key_values_are_strings=value.is_string();
833:
834: seq[pos].array_data=i.value();
835: if(key_values_are_strings)
836: seq[pos++].value.c_str=value.as_string().cstr();
837: else
838: seq[pos++].value.d=value.as_expr_result().as_double();
839: }
840: }
841:
842: // @todo: handle this elsewhere
843: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings)
844: for(pos=0; pos<count; pos++)
845: if(*seq[pos].value.c_str)
846: seq[pos].value.c_str=Charset::transcode(seq[pos].value.c_str, r.charsets.source(), pa_UTF8_charset).cstr();
847:
848: // sort keys
849: qsort(seq, count, sizeof(Array_seq_item), key_values_are_strings ? sort_cmp_string : sort_cmp_double);
850:
851: // reorder array as required in 'seq'
852: array.clear();
853: if(reverse)
854: for(pos=count-1; pos>=0; pos--)
855: array+=seq[pos].array_data;
856: else
857: for(pos=0; pos<count; pos++)
858: array+=seq[pos].array_data;
859:
860: delete[] seq;
861: }
862:
1.5 moko 863: enum AtResultType {
864: AtResultTypeValue = 0,
865: AtResultTypeKey = 1,
866: AtResultTypeHash = 2
867: };
868:
869: inline Value& SingleElementHash(String::Body akey, Value* avalue) {
870: Value& result=*new VHash;
871: result.put_element(*new String(akey, String::L_TAINTED), avalue);
872: return result;
873: }
874:
1.1 moko 875: static void _at(Request& r, MethodParams& params) {
876: VArray& self=GET_SELF(r, VArray);
877: ArrayValue& array=self.array();
1.5 moko 878: size_t count=array.used(); // not array.count()
1.1 moko 879:
880: int pos=0;
881:
882: AtResultType result_type=AtResultTypeValue;
883: if(params.count() > 1) {
884: const String& stype=params.as_string(1, "type must be string");
885: if(stype == "key")
886: result_type=AtResultTypeKey;
887: else if(stype == "hash")
888: result_type=AtResultTypeHash;
889: else if(stype != "value")
890: throw Exception(PARSER_RUNTIME, &stype, "type must be 'key', 'value' or 'hash'");
891: }
892:
893: Value& vwhence=params[0];
894: if(vwhence.is_string()) {
895: const String& swhence=*vwhence.get_string();
896: if(swhence == "last")
897: pos=count-1;
898: else if(swhence != "first")
899: throw Exception(PARSER_RUNTIME, &swhence, "whence must be 'first', 'last' or expression");
900: } else {
901: pos=r.process(vwhence).as_int();
902: if(pos < 0)
903: pos+=count;
904: }
905:
906: if(count && pos >= 0 && (size_t)pos < count){
907: switch(result_type) {
908: case AtResultTypeKey:
909: {
910: for(ArrayValue::Iterator i(array); i; i.next() ){
911: if(i.value() && !(pos--)){
912: r.write(*new VString(*new String(i.key(), String::L_TAINTED)));
913: break;
914: }
915: }
916: break;
917: }
918: case AtResultTypeValue:
919: {
920: for(ArrayValue::Iterator i(array); i; i.next() )
921: if(i.value() &&!(pos--)){
922: r.write(*i.value());
923: break;
924: }
925: break;
926: }
927: case AtResultTypeHash:
928: {
929: for(ArrayValue::Iterator i(array); i; i.next() )
930: if(i.value() &&!(pos--)){
931: r.write(SingleElementHash(i.key(), i.value()));
932: break;
933: }
934: break;
935: }
936: }
937: }
938: }
939:
940:
941: extern String table_reverse_name;
942:
943: static void _select(Request& r, MethodParams& params) {
944: InCycle temp(r);
945: const String* key_var_name=¶ms.as_string(0, "key-var name must be string");
946: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
947: Value& vcondition=params.as_expression(2, "condition must be number, bool or expression");
948:
949: if(key_var_name->is_empty()) key_var_name=0;
950: if(value_var_name->is_empty()) value_var_name=0;
951:
952: ArrayValue& source_array=GET_SELF(r, VArray).array();
953: Value& caller=*r.get_method_frame()->caller();
954:
955: int limit=source_array.count();
956: bool reverse=false;
957:
958: if(params.count()>3)
959: if(HashStringValue* options=params.as_hash(3)) {
960: int valid_options=0;
961: if(Value* vlimit=options->get(sql_limit_name)) {
962: valid_options++;
963: limit=r.process(*vlimit).as_int();
964: }
965: if(Value* vreverse=options->get(table_reverse_name)) {
966: valid_options++;
967: reverse=r.process(*vreverse).as_bool();
968: }
969: if(valid_options!=options->count())
970: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
971: }
972:
973: VArray *result=new VArray;
974: ArrayValue& result_array=result->array();
975:
976: if(limit>0){
977: if(reverse){
978: for(ArrayValue::ReverseIterator i(source_array); i; ){
1.5 moko 979: if(Value *value=i.prev()){ // here for correct i.key()
980: if(key_var_name)
981: r.put_element(caller, *key_var_name, new VString(*new String(i.key(), String::L_TAINTED)));
982: if(value_var_name)
983: r.put_element(caller, *value_var_name, value);
1.1 moko 984:
1.5 moko 985: bool condition=r.process(vcondition).as_bool();
1.1 moko 986:
1.5 moko 987: if(r.check_skip_break())
988: break;
1.1 moko 989:
1.5 moko 990: if(condition){
991: result_array+=value;
992: if(!--limit)
993: break;
994: }
1.1 moko 995: }
996: }
997: } else {
998: for(ArrayValue::Iterator i(source_array); i; i.next() ){
1.5 moko 999: if(Value *value=i.value()){
1.1 moko 1000: if(key_var_name)
1001: r.put_element(caller, *key_var_name, new VString(*new String(i.key(), String::L_TAINTED)));
1002: if(value_var_name)
1003: r.put_element(caller, *value_var_name, value);
1004:
1005: bool condition=r.process(vcondition).as_bool();
1006:
1007: if(r.check_skip_break())
1008: break;
1009:
1010: if(condition){
1011: result_array+=value;
1012: if(!--limit)
1013: break;
1014: }
1015: }
1016: }
1017: }
1018: }
1019:
1020: r.write(*result);
1021: }
1022:
1023: static void _reverse(Request& r, MethodParams& params) {
1.5 moko 1024: ArrayValue& source_array=GET_SELF(r, VArray).array();
1.1 moko 1025:
1.5 moko 1026: VArray& result=*new VArray(source_array.count());
1.1 moko 1027: ArrayValue& result_array=result.array();
1028:
1.4 moko 1029: for(ArrayValue::ReverseIterator i(source_array); i; ){
1030: result_array+=i.prev();
1.1 moko 1031: }
1032:
1033: r.write(result);
1034: }
1035:
1036:
1037: // constructor
1038:
1039: MArray::MArray(): Methoded(VARRAY_TYPE) {
1040:
1041: // ^array::create[[copy_from]]
1042: add_native_method("create", Method::CT_DYNAMIC, _create_or_add, 0, 1);
1043: // ^array.add[add_from]
1044: add_native_method("add", Method::CT_DYNAMIC, _create_or_add, 1, 1);
1.6 moko 1045: // ^array.join[join_from[;options]]
1046: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.1 moko 1047:
1.9 moko 1048: // ^array.left(n)
1049: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1050: // ^array.right(n)
1051: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1052: // ^array.mid(p)
1053: // ^array.mid(p;n)
1054: add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2);
1.1 moko 1055:
1.8 moko 1056: // ^array::new[value;value]
1057: add_native_method("new", Method::CT_DYNAMIC, _append, 0, 10000);
1.2 moko 1058: // ^array.append[value;value]
1059: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 10000);
1060: // ^array.insert[index;value...]
1061: add_native_method("insert", Method::CT_DYNAMIC, _insert, 2, 10000);
1062:
1063: // ^array.delete[index]
1.1 moko 1064: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 1);
1.7 moko 1065: // ^array.remove[index]
1066: add_native_method("remove", Method::CT_DYNAMIC, _remove, 1, 1);
1.1 moko 1067:
1.2 moko 1068: // ^array.contains[index]
1.1 moko 1069: add_native_method("contains", Method::CT_DYNAMIC, _contains, 1, 1);
1070:
1071: // ^array::sql[query][options array]
1072: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1073:
1074: // ^array._keys[[column name]]
1075: add_native_method("_keys", Method::CT_DYNAMIC, _keys, 0, 1);
1076:
1.5 moko 1077: // ^array._count[[all]]
1078: add_native_method("_count", Method::CT_DYNAMIC, _count, 0, 1);
1.1 moko 1079:
1.7 moko 1080: // ^array.for[index;value]{code}[delim]
1081: add_native_method("for", Method::CT_DYNAMIC, _for, 3, 3+1);
1.2 moko 1082: // ^array.foreach[index;value]{code}[delim]
1.7 moko 1083: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 3+1);
1.1 moko 1084:
1.2 moko 1085: // ^array.sort[index;value]{string-key-maker}[[asc|desc]]
1086: // ^array.sort[index;value](numeric-key-maker)[[asc|desc]]
1.1 moko 1087: add_native_method("sort", Method::CT_DYNAMIC, _sort, 3, 4);
1088:
1.2 moko 1089: // ^array.select[index;value](bool-condition)[options hash]
1.1 moko 1090: add_native_method("select", Method::CT_DYNAMIC, _select, 3, 4);
1091:
1092: // ^array.reverse[]
1093: add_native_method("reverse", Method::CT_DYNAMIC, _reverse, 0, 0);
1094:
1.2 moko 1095: // ^array._at[first|last[;'key'|'value'|'hash']]
1096: // ^array._at([-+]offset)[['key'|'value'|'hash']]
1.1 moko 1097: add_native_method("_at", Method::CT_DYNAMIC, _at, 1, 2);
1098:
1099: #ifdef FEATURE_GET_ELEMENT4CALL
1100: // aliases without "_"
1101: add_native_method("keys", Method::CT_DYNAMIC, _keys, 0, 1);
1.14 ! moko 1102: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.1 moko 1103: add_native_method("at", Method::CT_DYNAMIC, _at, 1, 2);
1104: #endif
1105:
1106: }