Annotation of parser3/src/classes/table.C, revision 1.303
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.286 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.144 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.154 paf 6: */
1.221 paf 7:
1.257 misha 8: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 9: #include <sstream>
1.240 misha 10: #endif
1.1 paf 11:
1.105 parser 12: #include "classes.h"
1.182 paf 13: #include "pa_vmethod_frame.h"
14:
1.16 paf 15: #include "pa_common.h"
1.1 paf 16: #include "pa_request.h"
1.265 misha 17: #include "pa_charsets.h"
1.1 paf 18: #include "pa_vtable.h"
1.6 paf 19: #include "pa_vint.h"
1.51 paf 20: #include "pa_sql_connection.h"
1.72 paf 21: #include "pa_vbool.h"
1.277 moko 22: #include "pa_array.h"
1.1 paf 23:
1.303 ! moko 24: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.302 2015/04/06 22:27:25 moko Exp $";
1.286 moko 25:
1.66 paf 26: // class
27:
1.182 paf 28: class MTable: public Methoded {
1.66 paf 29: public: // VStateless_class
1.264 misha 30: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 31: public:
1.182 paf 32: MTable();
1.66 paf 33: };
1.1 paf 34:
1.182 paf 35: // global variable
36:
37: DECLARE_CLASS_VAR(table, new MTable, 0);
38:
39: #define TABLE_REVERSE_NAME "reverse"
40:
41: // globals
42:
1.203 paf 43: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 44: String sql_limit_name(PA_SQL_LIMIT_NAME);
45: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 46: String sql_default_name(SQL_DEFAULT_NAME);
47: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 48: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 49: String table_reverse_name(TABLE_REVERSE_NAME);
50:
1.1 paf 51: // methods
1.66 paf 52:
1.182 paf 53: static Table::Action_options get_action_options(Request& r, MethodParams& params,
1.268 misha 54: size_t options_index, const Table& source) {
1.176 paf 55: Table::Action_options result;
1.268 misha 56: if(params.count() <= options_index)
1.182 paf 57: return result;
58:
1.288 misha 59: HashStringValue* options=params.as_hash(options_index);
1.176 paf 60: if(!options)
61: return result;
62:
63: result.defined=true;
64: bool defined_offset=false;
65:
66: int valid_options=0;
1.182 paf 67: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 68: valid_options++;
69: defined_offset=true;
70: if(voffset->is_string()) {
1.182 paf 71: const String& soffset=*voffset->get_string();
1.176 paf 72: if(soffset == "cur")
73: result.offset=source.current();
74: else
1.226 misha 75: throw Exception(PARSER_RUNTIME,
1.176 paf 76: &soffset,
77: "must be 'cur' string or expression");
78: } else
79: result.offset=r.process_to_value(*voffset).as_int();
80: }
1.182 paf 81: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 82: valid_options++;
83: result.limit=r.process_to_value(*vlimit).as_int();
84: }
1.182 paf 85: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
86: valid_options++;
87: result.reverse=r.process_to_value(*vreverse).as_bool();
88: if(result.reverse && !defined_offset)
89: result.offset=source.count()-1;
90: }
91:
92: if(valid_options!=options->count())
1.272 misha 93: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 94:
95: return result;
96: }
1.157 paf 97:
1.236 misha 98: struct TableSeparators {
99: char column; const String* scolumn;
100: char encloser; const String* sencloser;
101:
102: TableSeparators():
1.254 misha 103: column('\t'), scolumn(new String("\t")),
1.236 misha 104: encloser(0), sencloser(0)
105: {}
106: int load( HashStringValue& options ) {
107: int result=0;
108: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
109: scolumn=&vseparator->as_string();
110: if(scolumn->length()!=1)
111: throw Exception(PARSER_RUNTIME,
112: scolumn,
113: "separator must be one character long");
114: column=scolumn->first_char();
115: result++;
116: }
117: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
118: sencloser=&vencloser->as_string();
1.297 moko 119: if(sencloser->is_empty()){
120: encloser=0;
121: } else {
1.236 misha 122: if(sencloser->length()!=1)
123: throw Exception(PARSER_RUNTIME,
124: sencloser,
125: "encloser must be one character long");
126: encloser=sencloser->first_char();
1.297 moko 127: }
1.236 misha 128: result++;
129: }
130: return result;
131: }
132: };
133:
1.182 paf 134: static void _create(Request& r, MethodParams& params) {
1.157 paf 135: // clone/copy part?
1.182 paf 136: if(Table *source=params[0].get_table()) {
1.268 misha 137: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 ! moko 138: if(params.count()>2)
! 139: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 140: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 141: return;
142: }
1.142 paf 143:
1.236 misha 144: size_t data_param_index=0;
145: bool nameless=false;
146:
147: if(params.count()>1) {
148: if(params[0].is_string()){ // can be nameless only
149: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
150: if(snameless!="nameless")
151: throw Exception(PARSER_RUNTIME,
152: &snameless,
153: "table::create called with more then 1 param, first param may be only 'nameless'");
154: nameless=true;
155: data_param_index++;
156: }
157: }
158:
159: HashStringValue *options=0;
160: TableSeparators separators;
161:
162: size_t options_param_index=data_param_index+1;
163: if(
164: options_param_index<params.count()
1.288 misha 165: && (options=params.as_hash(options_param_index))
1.236 misha 166: ) {
167: // cloning, so that we could change
168: options=new HashStringValue(*options);
169: separators.load(*options);
170: if(separators.encloser){
171: throw Exception(PARSER_RUNTIME,
172: 0,
173: "encloser not supported for table::create yet");
174: }
175: }
176:
177: // data
1.182 paf 178: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
179: const String& data=
1.301 misha 180: r.process_to_string(params.as_junction(data_param_index, "body must be table or code"));
1.44 paf 181:
182: // parse columns
1.182 paf 183: size_t raw_pos_after=0;
184: Table::columns_type columns;
1.236 misha 185:
186: if(nameless){
1.182 paf 187: columns=Table::columns_type(0); // nameless
1.21 paf 188: } else {
1.182 paf 189: columns=Table::columns_type(new ArrayString);
1.44 paf 190:
1.182 paf 191: ArrayString head;
192: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
193: if(head.count()) {
194: size_t col_pos_after=0;
1.285 misha 195: if(head[0]->is_empty())
196: *columns += new String();
197: else
198: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 199: }
1.44 paf 200: }
201:
1.182 paf 202: Table& table=*new Table(columns);
1.44 paf 203: // parse cells
1.182 paf 204:
205: ArrayString rows;
206: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
207: Array_iterator<const String*> i(rows);
1.98 parser 208: while(i.has_next()) {
1.182 paf 209: Table::element_type row(new ArrayString);
1.252 misha 210: const String& string=*i.next();
1.118 parser 211: // remove comment lines
1.252 misha 212: if(string.is_empty())
1.44 paf 213: continue;
214:
1.182 paf 215: size_t col_pos_after=0;
1.236 misha 216: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 217: table+=row;
1.17 paf 218: }
1.1 paf 219:
1.44 paf 220: // replace any previous table value
1.182 paf 221: GET_SELF(r, VTable).set_table(table);
1.44 paf 222: }
223:
1.187 paf 224: struct lsplit_result {
225: char* piece;
226: char delim;
227:
228: operator bool() { return piece!=0; }
229: };
230:
231: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
232: lsplit_result result;
1.273 misha 233: if(string) {
1.187 paf 234: char delims[]={delim1, delim2, 0};
235: if(char* v=strpbrk(string, delims)) {
236: result.delim=*v;
237: *v=0;
238: result.piece=v+1;
239: return result;
240: }
1.273 misha 241: }
1.187 paf 242: result.piece=0;
243: result.delim=0;
1.273 misha 244: return result;
1.187 paf 245: }
246:
247: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
1.273 misha 248: lsplit_result result;
1.187 paf 249: result.piece=*string_ref;
250: lsplit_result next=lsplit(*string_ref, delim1, delim2);
251: result.delim=next.delim;
252: *string_ref=next.piece;
1.273 misha 253: return result;
1.187 paf 254: }
255:
256: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
257: lsplit_result result;
258:
1.273 misha 259: if(char* string=*string_ref) {
1.187 paf 260: if(encloser && *string==encloser) {
1.273 misha 261: string++;
1.187 paf 262:
263: char *read;
264: char *write;
265: write=read=string;
266: char c;
1.290 moko 267: // we are enclosed, searching for second encloser
268: while(c=*read++) {
1.187 paf 269: if(c==encloser) {
1.290 moko 270: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 271: read++;
1.290 moko 272: else
273: break; // note: skipping encloser
1.187 paf 274: }
275: *write++=c;
276: }
1.290 moko 277: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
278: while(c=*read++) {
279: if(c==delim1 || c==delim2) {
280: result.delim=c;
281: break;
282: } else if(c!=encloser)
283: *write++=c;
284: }
1.187 paf 285: *write=0; // terminate
286: *string_ref=c? read: 0;
287: result.piece=string;
288: return result;
289: } else
290: return lsplit(string_ref, delim1, delim2);
1.273 misha 291: }
1.187 paf 292: result.piece=0;
1.273 misha 293: return result;
1.187 paf 294: }
295:
296: static void skip_empty_and_comment_lines( char** data_ref ) {
297: if(char *data=*data_ref) {
298: while( char c=*data ) {
299: if( c== '\n' || c == '#' ) {
300: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 301: if(!(*data_ref=data))
302: break;
1.187 paf 303: continue;
304: }
305: break;
306: }
307: }
308: }
309:
1.273 misha 310: static void skip_empty_lines( char** data_ref ) {
311: if(char *data=*data_ref) {
312: while( char c=*data ) {
313: if( c== '\n' ) {
314: /*nowhere=*/getrow(&data); // remove empty lines
315: if(!(*data_ref=data))
316: break;
317: continue;
318: }
319: break;
320: }
321: }
322: }
323:
324: typedef void (*Skip_lines_action)(char** data_ref);
325:
1.182 paf 326: static void _load(Request& r, MethodParams& params) {
1.232 misha 327: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 328: int filename_param_index=0;
329: bool nameless=first_param=="nameless";
330: if(nameless)
331: filename_param_index++;
1.182 paf 332: size_t options_param_index=filename_param_index+1;
1.186 paf 333:
334: HashStringValue *options=0;
1.187 paf 335: TableSeparators separators;
1.186 paf 336: if(options_param_index<params.count()
1.288 misha 337: && (options=params.as_hash(options_param_index))) {
1.186 paf 338: // cloning, so that we could change [to simplify checks on params inside file_read_text
339: options=new HashStringValue(*options);
1.187 paf 340: separators.load(*options);
1.186 paf 341: }
342:
1.44 paf 343: // loading text
1.247 misha 344: char *data=file_load_text(r,
1.232 misha 345: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 346: true,
1.186 paf 347: options
1.168 paf 348: );
1.44 paf 349:
1.273 misha 350: Skip_lines_action skip_lines_action = (separators.column=='#' || separators.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
351:
1.1 paf 352: // parse columns
1.182 paf 353: Table::columns_type columns;
1.168 paf 354: if(nameless) {
1.182 paf 355: columns=Table::columns_type(0); // nameless
1.1 paf 356: } else {
1.182 paf 357: columns=Table::columns_type(new ArrayString);
1.1 paf 358:
1.273 misha 359: skip_lines_action(&data);
1.187 paf 360: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 361: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 362: if(sr.delim=='\n')
363: break;
1.139 paf 364: }
1.1 paf 365: }
1.187 paf 366:
367: Table& table=*new Table(columns);
1.219 paf 368: int columns_count=columns? columns->count(): 0;
1.1 paf 369:
370: // parse cells
1.218 paf 371: Table::element_type row(new ArrayString(columns_count));
1.273 misha 372: skip_lines_action(&data);
1.187 paf 373: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 374: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
375: break;
1.256 misha 376: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 377: if(sr.delim=='\n') {
378: table+=row;
1.218 paf 379: row=new ArrayString(columns_count);
1.273 misha 380: skip_lines_action(&data);
1.1 paf 381: }
1.187 paf 382: }
383: // last line [if without \n]
384: if(row->count())
1.1 paf 385: table+=row;
1.187 paf 386:
1.1 paf 387: // replace any previous table value
1.182 paf 388: GET_SELF(r, VTable).set_table(table);
1.1 paf 389: }
1.2 paf 390:
1.257 misha 391: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.297 moko 392: #define USE_STRINGSTREAM
393: #endif
1.241 misha 394:
1.297 moko 395: #ifdef USE_STRINGSTREAM
1.269 misha 396: #include "gc_allocator.h"
397:
398: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
399: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
400:
1.298 moko 401: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 402: if(from){
1.257 misha 403: to<<encloser;
1.188 paf 404: // while we have 'encloser'...
1.189 paf 405: size_t pos_after=0;
1.297 moko 406: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 407: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 408: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 409: to<<encloser; // doubling encloser
1.188 paf 410: }
411: // last piece
1.297 moko 412: size_t from_length=from->length();
1.188 paf 413: if(pos_after<from_length)
1.297 moko 414: to<<from->mid(pos_after, from_length).cstr();
415: to<<encloser;
416: } else {
417: to<<encloser<<encloser;
418: }
419: }
420:
421: static void table_to_csv(pa_stringstream& result, Table& table, TableSeparators& separators, bool output_column_names) {
422: if(output_column_names) {
423: if(table.columns()) { // named table
424: if(separators.encloser){
425: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.298 moko 426: enclose( result, i.next(), separators.encloser );
1.297 moko 427: if(i.has_next())
428: result<<separators.column;
429: }
430: } else {
431: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
432: result<<i.next()->cstr();
433: if(i.has_next())
434: result<<separators.column;
435: }
436: }
437: } else { // nameless table [we were asked to output column names]
438: if(int lsize=table.count()?table[0]->count():0)
439: for(int column=0; column<lsize; column++) {
440: if(separators.encloser) {
441: result<<separators.encloser<<column<<separators.encloser;
442: } else {
443: result<<column;
444: }
445: if(column<lsize-1){
446: result<<separators.column;
447: }
448: }
449: else
450: result<<"empty nameless table";
451: }
452: result<<'\n';
453: }
1.188 paf 454:
1.297 moko 455: // process data lines
456: Array_iterator<ArrayString*> i(table);
457: if(separators.encloser){
458: while(i.has_next()) {
459: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.298 moko 460: enclose( result, c.next(), separators.encloser );
1.297 moko 461: if(c.has_next())
462: result<<separators.column;
463: }
464: result<<'\n';
465: }
466: } else {
467: while(i.has_next()) {
468: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
469: result<<c.next()->cstr();
470: if(c.has_next())
471: result<<separators.column;
472: }
473: result<<'\n';
474: }
475: }
1.188 paf 476: }
477:
1.241 misha 478: #else
479:
1.298 moko 480: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 481: if(from){
1.257 misha 482: to<<*sencloser;
1.224 misha 483: // while we have 'encloser'...
484: size_t pos_after=0;
1.297 moko 485: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 486: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 487: to<<from->mid(pos_after, pos_before);
1.257 misha 488: to<<*sencloser; // doubling encloser
1.224 misha 489: }
490: // last piece
1.297 moko 491: size_t from_length=from->length();
1.224 misha 492: if(pos_after<from_length)
1.297 moko 493: to<<from->mid(pos_after, from_length);
1.257 misha 494: to<<*sencloser;
1.297 moko 495: } else {
496: to<<*sencloser<<*sencloser;
497: }
1.224 misha 498: }
499:
1.297 moko 500: static void table_to_csv(String& result, Table& table, TableSeparators& separators, bool output_column_names) {
501: if(output_column_names) {
502: if(table.columns()) { // named table
503: if(separators.encloser) {
504: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.298 moko 505: enclose( result, i.next(), separators.encloser, separators.sencloser );
1.297 moko 506: if(i.has_next())
507: result<<*separators.scolumn;
508: }
509: } else {
510: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
511: result<<*i.next();
512: if(i.has_next())
513: result<<*separators.scolumn;
514: }
515: }
516: } else { // nameless table [we were asked to output column names]
517: if(int lsize=table.count()?table[0]->count():0)
518: for(int column=0; column<lsize; column++) {
1.298 moko 519: if(separators.encloser) {
520: result<<*separators.sencloser<<String::Body::Format(column)<<*separators.sencloser;
521: } else {
522: result<<String::Body::Format(column);
523: }
524: if(column<lsize-1){
525: result<<*separators.scolumn;
526: }
1.297 moko 527: }
528: else
529: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
530: }
531: result.append_know_length("\n", 1, String::L_CLEAN);
532: }
533:
534: // data lines
535: Array_iterator<ArrayString*> i(table);
536: if(separators.encloser){
537: while(i.has_next()) {
538: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.298 moko 539: enclose( result, c.next(), separators.encloser, separators.sencloser );
1.297 moko 540: if(c.has_next())
541: result<<*separators.scolumn;
542: }
543: result.append_know_length("\n", 1, String::L_CLEAN);
544: }
545: } else {
546: while(i.has_next()) {
547: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
548: result<<*c.next();
549: if(c.has_next())
550: result<<*separators.scolumn;
551: }
552: result.append_know_length("\n", 1, String::L_CLEAN);
553: }
554: }
555: }
1.257 misha 556: #endif // don't use stringstream
1.241 misha 557:
1.297 moko 558:
1.241 misha 559: static void _save(Request& r, MethodParams& params) {
1.237 misha 560: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 561: size_t param_index=1;
562:
563: bool do_append=false;
564: bool output_column_names=true;
565:
566: // mode?
567: if(first_arg=="append")
568: do_append=true;
569: else if(first_arg=="nameless")
570: output_column_names=false;
571: else
572: --param_index;
573:
1.232 misha 574: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 575: String file_spec=r.absolute(file_name);
576:
577: if(do_append && file_exist(file_spec))
578: output_column_names=false;
1.188 paf 579:
580: TableSeparators separators;
1.281 misha 581: if(param_index<params.count())
1.288 misha 582: if(HashStringValue* options=params.as_hash(param_index++)) {
1.281 misha 583: int valid_options=separators.load(*options);
584: if(valid_options!=options->count())
585: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 586: }
1.281 misha 587:
1.188 paf 588: if(param_index<params.count())
1.226 misha 589: throw Exception(PARSER_RUNTIME,
1.188 paf 590: 0,
591: "bad mode (must be nameless or append)");
1.22 paf 592:
1.182 paf 593: Table& table=GET_SELF(r, VTable).table();
1.31 paf 594:
1.297 moko 595: #ifdef USE_STRINGSTREAM
1.269 misha 596: pa_stringstream ost(std::stringstream::out);
1.257 misha 597:
1.297 moko 598: table_to_csv(ost, table, separators, output_column_names);
1.31 paf 599:
600: // write
1.269 misha 601: pa_string data=ost.str();
1.257 misha 602: const char* data_cstr=data.c_str();
1.267 misha 603: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 604: #else
1.257 misha 605: String sdata;
1.224 misha 606:
1.297 moko 607: table_to_csv(sdata, table, separators, output_column_names);
1.224 misha 608:
609: // write
1.257 misha 610: const char* data_cstr=sdata.cstr();
1.297 moko 611: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 612: if(*data_cstr) // not empty (when empty it's not heap memory)
613: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 614: #endif
615: }
616:
617: static void _csv_string(Request& r, MethodParams& params) {
618: bool output_column_names=true;
619: size_t param_index=0;
620: if(params.count()>0 && params[0].is_string()) {
621: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
622: output_column_names=false;
623: param_index++;
624: } else {
625: throw Exception(PARSER_RUNTIME,
626: 0,
627: "bad mode (must be nameless)");
628: }
1.224 misha 629: }
1.240 misha 630:
1.297 moko 631: TableSeparators separators;
632: if(param_index<params.count())
633: if(HashStringValue* options=params.as_hash(param_index++)) {
634: int valid_options=separators.load(*options);
635: if(valid_options!=options->count())
636: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
637: }
638:
639: Table& table=GET_SELF(r, VTable).table();
640:
641: #ifdef USE_STRINGSTREAM
642: pa_stringstream ost(std::stringstream::out);
643:
644: table_to_csv(ost, table, separators, output_column_names);
645:
646: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
647: #else
648: String sdata;
649:
650: table_to_csv(sdata, table, separators, output_column_names);
651:
652: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
653: #endif
1.224 misha 654: }
655:
1.280 misha 656: static void _count(Request& r, MethodParams& params) {
657: Table& table=GET_SELF(r, VTable).table();
658: size_t result=0;
659: if(params.count()) {
660: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
661: if(param == "columns")
662: result = table.columns() ? table.columns()->count() : 0;
663: else if(param == "cells")
664: result = table.count() ? table[table.current()]->count() : 0;
665: else if(param == "rows") // synonim for ^table.count[]
666: result = table.count();
667: else
668: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
669: } else
670: result = table.count();
671:
1.182 paf 672: r.write_no_lang(*new VInt(result));
1.6 paf 673: }
674:
1.182 paf 675: static void _line(Request& r, MethodParams&) {
676: int result=1+GET_SELF(r, VTable).table().current();
677: r.write_no_lang(*new VInt(result));
1.6 paf 678: }
679:
1.182 paf 680: static void _offset(Request& r, MethodParams& params) {
681: Table& table=GET_SELF(r, VTable).table();
682: if(params.count()) {
1.133 paf 683: bool absolute=false;
1.182 paf 684: if(params.count()>1) {
685: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 686: if(whence=="cur")
1.134 paf 687: absolute=false;
1.133 paf 688: else if(whence=="set")
1.134 paf 689: absolute=true;
1.133 paf 690: else
1.226 misha 691: throw Exception(PARSER_RUNTIME,
1.134 paf 692: &whence,
693: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 694: }
1.133 paf 695:
1.211 paf 696: int offset=params.as_int(params.count()-1, "offset must be expression", r);
697: table.offset(absolute, offset);
1.151 paf 698: } else
1.182 paf 699: r.write_no_lang(*new VInt(table.current()));
1.6 paf 700: }
701:
1.182 paf 702: static void _menu(Request& r, MethodParams& params) {
1.263 misha 703: InCycle temp(r);
1.221 paf 704:
1.182 paf 705: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 706:
1.182 paf 707: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 708:
1.182 paf 709: Table& table=GET_SELF(r, VTable).table();
1.293 misha 710: size_t saved_current=table.current();
711: size_t size=table.count();
1.7 paf 712:
1.251 misha 713: if(delim_maybe_code) { // delimiter set
1.250 misha 714: bool need_delim=false;
1.293 misha 715: for(size_t row=0; row<size; row++) {
1.250 misha 716: table.set_current(row);
717:
718: StringOrValue sv_processed=r.process(body_code);
719: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
720:
721: const String* s_processed=sv_processed.get_string();
1.251 misha 722: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 723: if(need_delim) // need delim & iteration produced string?
724: r.write_pass_lang(r.process(*delim_maybe_code));
725: else
726: need_delim=true;
727: }
728:
729: r.write_pass_lang(sv_processed);
1.242 misha 730:
1.250 misha 731: if(lskip==Request::SKIP_BREAK)
732: break;
733: }
734: } else {
1.293 misha 735: for(size_t row=0; row<size; row++) {
1.250 misha 736: table.set_current(row);
737:
738: r.process_write(body_code);
739: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
740:
741: if(lskip==Request::SKIP_BREAK)
742: break;
1.7 paf 743: }
744: }
1.99 parser 745: table.set_current(saved_current);
1.7 paf 746: }
747:
1.110 parser 748: #ifndef DOXYGEN
1.74 paf 749: struct Row_info {
1.166 paf 750: Request *r;
1.74 paf 751: Table *table;
1.182 paf 752: Value* key_code;
753: size_t key_field;
754: Array<int>* value_fields;
755: HashStringValue* hash;
1.174 paf 756: Table2hash_distint distinct;
1.182 paf 757: size_t row;
1.227 misha 758: Table2hash_value_type value_type;
1.74 paf 759: };
1.110 parser 760: #endif
1.182 paf 761: static void table_row_to_hash(Table::element_type row, Row_info *info) {
762: const String* key;
763: if(info->key_code) {
764: info->table->set_current(info->row++); // change context row
765: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 766: key=&sv_processed.as_string();
1.227 misha 767: } else {
1.182 paf 768: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 769: }
1.166 paf 770:
771: if(!key)
772: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 773:
1.243 misha 774: bool exist=false;
775: switch(info->value_type) {
776: case C_STRING: {
1.271 misha 777: size_t index=info->value_fields->get(0);
778: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 779: break;
1.227 misha 780: }
1.243 misha 781: case C_HASH: {
1.182 paf 782: VHash* vhash=new VHash;
783: HashStringValue& hash=vhash->hash();
784: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
785: size_t value_field=i.next();
786: if(value_field<row->count())
1.174 paf 787: hash.put(
1.182 paf 788: *info->table->columns()->get(value_field),
789: new VString(*row->get(value_field)));
1.174 paf 790: }
791:
1.227 misha 792: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 793: break;
1.174 paf 794: }
1.243 misha 795: case C_TABLE: {
796: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 797: Table* table;
1.227 misha 798: if(vtable) {
1.243 misha 799: if(info->distinct==D_ILLEGAL) {
800: exist=true;
801: break;
802: }
1.174 paf 803: table=vtable->get_table();
1.227 misha 804: } else {
1.174 paf 805: // no? creating table of same structure as source
1.179 paf 806: Table::Action_options table_options(0, 0);
1.182 paf 807: table=new Table(*info->table, table_options/*no rows, just structure*/);
808: info->hash->put(*key, new VTable(table));
1.174 paf 809: }
1.182 paf 810: *table+=row;
1.243 misha 811: break;
1.174 paf 812: }
1.74 paf 813: }
1.227 misha 814: if(exist && info->distinct==D_ILLEGAL)
815: throw Exception(PARSER_RUNTIME,
816: key,
817: "duplicate key");
1.74 paf 818: }
1.235 misha 819:
820: Table2hash_value_type get_value_type(Value& vvalue_type){
821: if(vvalue_type.is_string()) {
822: const String& svalue_type=*vvalue_type.get_string();
823: if(svalue_type == "table"){
824: return C_TABLE;
825: } else if (svalue_type == "string") {
826: return C_STRING;
827: } else if (svalue_type == "hash") {
828: return C_HASH;
829: } else {
830: throw Exception(PARSER_RUNTIME,
831: &svalue_type,
832: "must be 'hash', 'table' or 'string'");
833: }
834: } else {
835: throw Exception(PARSER_RUNTIME,
836: 0,
837: "'type' must be hash");
838: }
839: }
840:
1.182 paf 841: static void _hash(Request& r, MethodParams& params) {
842: Table& self_table=GET_SELF(r, VTable).table();
843: VHash& result=*new VHash;
1.238 misha 844: if(Table::columns_type columns=self_table.columns()){
1.182 paf 845: if(columns->count()>0) {
1.174 paf 846: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 847: Table2hash_value_type value_type=C_HASH;
1.182 paf 848: int param_index=params.count()-1;
1.166 paf 849: if(param_index>0) {
1.289 misha 850: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // can't use .as_has because the 2nd param could be table so .as_hash throws an error
1.166 paf 851: --param_index;
852: int valid_options=0;
1.238 misha 853: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 854: valid_options++;
1.174 paf 855: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
856: if(vdistinct_value.is_string()) {
857: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 858: if(sdistinct=="tables") {
859: value_type=C_TABLE;
860: distinct=D_FIRST;
1.238 misha 861: } else {
1.226 misha 862: throw Exception(PARSER_RUNTIME,
1.174 paf 863: &sdistinct,
864: "must be 'tables' or true/false");
1.238 misha 865: }
866: } else {
1.174 paf 867: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 868: }
1.166 paf 869: }
1.238 misha 870: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
871: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 872: throw Exception(PARSER_RUNTIME,
873: 0,
1.238 misha 874: "you can't specify $.distinct[tables] and $.type[] together");
875:
876: valid_options++;
877: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
878: }
1.226 misha 879:
1.182 paf 880: if(valid_options!=options->count())
1.272 misha 881: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 882: }
883: }
1.238 misha 884:
1.289 misha 885: if(param_index==2) // options was specified but not as hash
886: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
887:
1.182 paf 888: Array<int> value_fields;
1.238 misha 889: if(param_index==0){ // list of columns wasn't specified
890: if(value_type==C_STRING) // $.type[string]
891: throw Exception(PARSER_RUNTIME,
892: 0,
893: "you must specify one value field with option $.type[string]");
894:
895: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
896: value_fields+=i;
897:
898: } else { // list of columns was specified
1.227 misha 899: if(value_type==C_TABLE)
900: throw Exception(PARSER_RUNTIME,
1.174 paf 901: 0,
1.238 misha 902: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
903:
1.182 paf 904: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 905: if(value_fields_param.is_string()) { // one column as string was specified
906: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
907: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
908: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
909: const String& value_field_name =*i.next()->get(0);
910: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 911: }
912: } else
1.226 misha 913: throw Exception(PARSER_RUNTIME,
1.182 paf 914: 0,
1.226 misha 915: "value field(s) must be string or table");
1.239 misha 916: }
1.74 paf 917:
1.227 misha 918: if(value_type==C_STRING && value_fields.count()!=1)
919: throw Exception(PARSER_RUNTIME,
920: 0,
1.238 misha 921: "you can specify only one value field with option $.type[string]");
1.182 paf 922:
923: {
924: Value* key_param=¶ms[0];
1.193 paf 925: Row_info info={
926: &r,
927: &self_table,
928: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 929: /*key_field=*/0/*filled below*/,
1.193 paf 930: &value_fields,
931: &result.hash(),
932: distinct,
1.227 misha 933: /*row=*/0,
934: value_type
1.193 paf 935: };
1.195 paf 936: info.key_field=(info.key_code?-1
937: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 938:
939: int saved_current=self_table.current();
940: self_table.for_each(table_row_to_hash, &info);
941: self_table.set_current(saved_current);
1.207 paf 942:
943: result.extract_default();
1.182 paf 944: }
1.74 paf 945: }
1.238 misha 946: }
1.97 parser 947: r.write_no_lang(result);
1.74 paf 948: }
949:
1.110 parser 950: #ifndef DOXYGEN
1.78 paf 951: struct Table_seq_item {
1.182 paf 952: ArrayString* row;
1.34 paf 953: union {
1.182 paf 954: const char *c_str;
1.34 paf 955: double d;
956: } value;
1.32 paf 957: };
1.110 parser 958: #endif
1.34 paf 959: static int sort_cmp_string(const void *a, const void *b) {
960: return strcmp(
1.78 paf 961: static_cast<const Table_seq_item *>(a)->value.c_str,
962: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 963: );
964: }
965: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 966: double va=static_cast<const Table_seq_item *>(a)->value.d;
967: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 968: if(va<vb)
969: return -1;
970: else if(va>vb)
971: return +1;
972: else
973: return 0;
974: }
1.182 paf 975: static void _sort(Request& r, MethodParams& params) {
976: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 977:
1.182 paf 978: bool reverse=params.count()>1/*..[desc|asc|]*/?
979: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 980: false; // default=asc
1.32 paf 981:
1.182 paf 982: Table& old_table=GET_SELF(r, VTable).table();
983: Table& new_table=*new Table(old_table.columns());
1.34 paf 984:
1.182 paf 985: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 986: int i;
987:
988: // calculate key values
989: bool key_values_are_strings=true;
1.182 paf 990: int old_count=old_table.count();
991: for(i=0; i<old_count; i++) {
1.101 parser 992: old_table.set_current(i);
1.32 paf 993: // calculate key value
1.182 paf 994: seq[i].row=old_table[i];
1.287 moko 995: Value& value=r.process_to_value(key_maker);
1.34 paf 996: if(i==0) // determining key values type by first one
997: key_values_are_strings=value.is_string();
998:
999: if(key_values_are_strings)
1000: seq[i].value.c_str=value.as_string().cstr();
1001: else
1.287 moko 1002: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1003: }
1.265 misha 1004:
1005: // @todo: handle this elsewhere
1006: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1007: for(i=0; i<old_count; i++)
1008: if(*seq[i].value.c_str)
1009: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
1010: }
1011:
1.266 misha 1012: // sort keys
1.295 moko 1013: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1014:
1.34 paf 1015: // reorder table as they require in 'seq'
1.182 paf 1016: for(i=0; i<old_count; i++)
1017: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1018:
1019: delete[] seq;
1.32 paf 1020:
1.116 parser 1021: // replace any previous table value
1.182 paf 1022: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1023: }
1024:
1.176 paf 1025: #ifndef DOXYGEN
1.182 paf 1026: struct Expression_is_true_info {
1.176 paf 1027: Request* r;
1028: Value* expression_code;
1029: };
1030: #endif
1.275 misha 1031:
1.191 paf 1032: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1033: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1034: }
1.275 misha 1035:
1036: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1037: Value& expression_code=params.as_junction(0, "must be expression");
1.303 ! moko 1038: Table::Action_options o=get_action_options(r, params, 1, table);
! 1039: if(params.count()>2)
! 1040: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1041: Expression_is_true_info info={&r, &expression_code};
1042: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1043: }
1.275 misha 1044:
1045: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1046: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1047: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 ! moko 1048: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1049: return table.locate(name, value, o);
1050: }
1.275 misha 1051:
1.182 paf 1052: static void _locate(Request& r, MethodParams& params) {
1053: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1054:
1.291 moko 1055: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1056: _locate_expression(table, r, params) :
1057: _locate_name_value(table, r, params);
1.249 misha 1058: r.write_no_lang(VBool::get(result));
1.145 paf 1059: }
1.182 paf 1060:
1061:
1.191 paf 1062: static void _flip(Request& r, MethodParams&) {
1.182 paf 1063: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1064: Table& new_table=*new Table(0);
1.182 paf 1065: if(size_t old_count=old_table.count())
1.270 misha 1066: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 1067: for(size_t column=0; column<old_cols; column++) {
1068: Table::element_type new_row(new ArrayString(old_count));
1069: for(size_t i=0; i<old_count; i++) {
1070: Table::element_type old_row=old_table[i];
1071: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1072: }
1.182 paf 1073: new_table+=new_row;
1.39 paf 1074: }
1075:
1.182 paf 1076: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1077: }
1078:
1.293 misha 1079: static void _foreach(Request& r, MethodParams& params) {
1080: InCycle temp(r);
1081:
1082: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1083: const String& value_name=params.as_string(1, "value-var name must be string");
1084:
1085: Value& body_code=params.as_junction(2, "body must be code");
1086:
1087: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1088:
1089: Table& table=GET_SELF(r, VTable).table();
1090: size_t saved_current=table.current();
1091: size_t size=table.count();
1092:
1093: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1094: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1095:
1096: Value* var_context=r.get_method_frame()->caller();
1097:
1098: if(delim_maybe_code) { // delimiter set
1099: bool need_delim=false;
1100: for(size_t row=0; row<size; row++) {
1101: table.set_current(row);
1102:
1103: if(rownum_var_name)
1.299 moko 1104: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1105: if(value_var_name)
1.299 moko 1106: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1107:
1108: StringOrValue sv_processed=r.process(body_code);
1109: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1110:
1111: const String* s_processed=sv_processed.get_string();
1112: if(s_processed && !s_processed->is_empty()) { // we have body
1113: if(need_delim) // need delim & iteration produced string?
1114: r.write_pass_lang(r.process(*delim_maybe_code));
1115: else
1116: need_delim=true;
1117: }
1118:
1119: r.write_pass_lang(sv_processed);
1120:
1121: if(lskip==Request::SKIP_BREAK)
1122: break;
1123: }
1124: } else {
1125: for(size_t row=0; row<size; row++) {
1126: table.set_current(row);
1127:
1128: if(rownum_var_name)
1.300 moko 1129: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1130: if(value_var_name)
1.300 moko 1131: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1132:
1133: r.process_write(body_code);
1134: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1135:
1136: if(lskip==Request::SKIP_BREAK)
1137: break;
1138: }
1139: }
1140: table.set_current(saved_current);
1141: }
1142:
1.182 paf 1143: static void _append(Request& r, MethodParams& params) {
1144: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1145: const String& string=r.process_to_string(params[0]);
1.41 paf 1146:
1147: // parse cells
1.182 paf 1148: Table::element_type row=new ArrayString;
1149: size_t pos_after=0;
1150: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1151:
1.182 paf 1152: GET_SELF(r, VTable).table()+=row;
1.41 paf 1153: }
1154:
1.182 paf 1155: static void join_named_row(Table& src, Table* dest) {
1156: Table::columns_type dest_columns=dest->columns();
1157: size_t dest_columns_count=dest_columns->count();
1158: Table::element_type dest_row(new ArrayString(dest_columns_count));
1159: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1160: const String* src_item=src.item(*dest_columns->get(dest_column));
1161: *dest_row+=src_item?src_item:new String;
1162: }
1163: *dest+=dest_row;
1164: }
1165: static void join_nameless_row(Table& src, Table* dest) {
1166: *dest+=src[src.current()];
1167: }
1168: static void _join(Request& r, MethodParams& params) {
1.288 misha 1169: Table& src=*params.as_table(0, "source");
1.176 paf 1170:
1.268 misha 1171: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1172:
1.182 paf 1173: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1174: if(&src == &dest)
1.226 misha 1175: throw Exception(PARSER_RUNTIME,
1.182 paf 1176: 0,
1.42 paf 1177: "source and destination are same table");
1178:
1.193 paf 1179: if(dest.columns()) // dest is named
1.182 paf 1180: src.table_for_each(join_named_row, &dest, o);
1181: else // dest is nameless
1182: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1183: }
1184:
1.94 parser 1185: #ifndef DOXYGEN
1.169 paf 1186: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1187: ArrayString& columns;
1.218 paf 1188: int columns_count;
1.182 paf 1189: ArrayString* row;
1.94 parser 1190: public:
1.182 paf 1191: Table* table;
1192: public:
1193: Table_sql_event_handlers() :
1194: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1195: }
1196:
1.279 misha 1197: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1198: try {
1.274 moko 1199: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1200: return false;
1201: } catch(...) {
1202: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1203: return true;
1204: }
1205: }
1206: bool before_rows(SQL_Error& error) {
1207: try {
1.182 paf 1208: table=new Table(&columns);
1.218 paf 1209: columns_count=columns.count();
1.170 paf 1210: return false;
1211: } catch(...) {
1212: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1213: return true;
1214: }
1215: }
1216: bool add_row(SQL_Error& error) {
1217: try {
1.218 paf 1218: *table+=row=new ArrayString(columns_count);
1.170 paf 1219: return false;
1220: } catch(...) {
1221: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1222: return true;
1223: }
1224: }
1.279 misha 1225: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1226: try {
1.292 misha 1227: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1228: return false;
1229: } catch(...) {
1230: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1231: return true;
1232: }
1.94 parser 1233: }
1234: };
1235: #endif
1.204 paf 1236:
1237: static void marshal_bind(
1238: HashStringValue::key_type aname,
1239: HashStringValue::value_type avalue,
1240: SQL_Driver::Placeholder** pptr)
1241: {
1242: SQL_Driver::Placeholder& ph=**pptr;
1243: ph.name=aname.cstr();
1.261 misha 1244: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1245: ph.is_null=avalue->get_class()==void_class;
1246: ph.were_updated=false;
1247:
1248: (*pptr)++;
1249: }
1250:
1251: // not static, used elsewhere
1252: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1253: int hash_count=hash.count();
1.302 moko 1254: placeholders=new SQL_Driver::Placeholder[hash_count];
1.204 paf 1255: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1256: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1257: return hash_count;
1258: }
1259:
1260: // not static, used elsewhere
1261: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1262: SQL_Driver::Placeholder* ph=placeholders;
1263: for(int i=0; i<placeholder_count; i++, ph++)
1264: if(ph->were_updated) {
1265: Value* value;
1266: if(ph->is_null)
1.248 misha 1267: value=VVoid::get();
1.204 paf 1268: else
1.256 misha 1269: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1270: hash.put(ph->name, value);
1271: }
1272: }
1273:
1.182 paf 1274: static void _sql(Request& r, MethodParams& params) {
1275: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1276:
1.204 paf 1277: HashStringValue* bind=0;
1.244 misha 1278: ulong limit=SQL_NO_LIMIT;
1.100 parser 1279: ulong offset=0;
1.281 misha 1280: if(params.count()>1)
1.288 misha 1281: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1282: int valid_options=0;
1283: if(Value* vbind=options->get(sql_bind_name)) {
1284: valid_options++;
1285: bind=vbind->get_hash();
1286: }
1287: if(Value* vlimit=options->get(sql_limit_name)) {
1288: valid_options++;
1289: limit=(ulong)r.process_to_value(*vlimit).as_double();
1290: }
1291: if(Value* voffset=options->get(sql_offset_name)) {
1292: valid_options++;
1293: offset=(ulong)r.process_to_value(*voffset).as_double();
1294: }
1295: if(valid_options!=options->count())
1296: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1297: }
1.49 paf 1298:
1.204 paf 1299: SQL_Driver::Placeholder* placeholders=0;
1300: uint placeholders_count=0;
1301: if(bind)
1302: placeholders_count=marshal_binds(*bind, placeholders);
1303:
1.182 paf 1304: Temp_lang temp_lang(r, String::L_SQL);
1305: const String& statement_string=r.process_to_string(statement);
1.262 misha 1306: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1307:
1.182 paf 1308: Table_sql_event_handlers handlers;
1.294 moko 1309:
1.182 paf 1310: r.connection()->query(
1.203 paf 1311: statement_cstr,
1.208 paf 1312: placeholders_count, placeholders,
1.203 paf 1313: offset, limit,
1.160 paf 1314: handlers,
1315: statement_string);
1.135 paf 1316:
1.204 paf 1317: if(bind)
1318: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1319:
1.182 paf 1320: Table& result=
1321: handlers.table?*handlers.table: // query resulted in table? return it
1322: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1323:
1324: // replace any previous table value
1.182 paf 1325: GET_SELF(r, VTable).set_table(result);
1.49 paf 1326: }
1327:
1.233 misha 1328: static void _columns(Request& r, MethodParams& params) {
1329: const String* column_column_name;
1330: if(params.count()>0)
1331: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1332: else
1333: column_column_name=new String("column");
1.88 parser 1334:
1.182 paf 1335: Table::columns_type result_columns(new ArrayString);
1.233 misha 1336: *result_columns+=column_column_name;
1.182 paf 1337: Table& result_table=*new Table(result_columns);
1.88 parser 1338:
1.182 paf 1339: Table& source_table=GET_SELF(r, VTable).table();
1340: if(Table::columns_type source_columns=source_table.columns()) {
1341: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1342: Table::element_type result_row(new ArrayString);
1343: *result_row+=i.next();
1344: result_table+=result_row;
1.88 parser 1345: }
1346: }
1347:
1.182 paf 1348: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1349: }
1350:
1.182 paf 1351: static void _select(Request& r, MethodParams& params) {
1.231 misha 1352: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1353:
1.182 paf 1354: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1355:
1.277 moko 1356: int limit=source_table.count();
1.282 misha 1357: int offset=0;
1358: bool reverse=false;
1.278 moko 1359:
1.281 misha 1360: if(params.count()>1)
1361: if(HashStringValue* options=params.as_hash(1)) {
1362: int valid_options=0;
1363: if(Value* vlimit=options->get(sql_limit_name)) {
1364: valid_options++;
1365: limit=r.process_to_value(*vlimit).as_int();
1366: }
1367: if(Value* voffset=options->get(sql_offset_name)) {
1368: valid_options++;
1369: offset=r.process_to_value(*voffset).as_int();
1370: }
1371: if(Value* vreverse=options->get(table_reverse_name)) {
1372: valid_options++;
1373: reverse=r.process_to_value(*vreverse).as_bool();
1374: }
1375: if(valid_options!=options->count())
1.288 misha 1376: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1377: }
1378:
1379: Table& result_table=*new Table(source_table.columns());
1.277 moko 1380:
1.283 misha 1381: size_t size=source_table.count();
1382: if(offset<0)
1383: offset+=size;
1.284 misha 1384: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1385: size_t saved_current=source_table.current();
1386: size_t appended=0;
1387:
1388: if(reverse){
1389: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1390: source_table.set_current(row);
1391:
1392: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1393:
1394: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1395: result_table+=source_table[row];
1396: if(row==0) break;
1397: }
1398: } else {
1399: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1400: source_table.set_current(row);
1.148 paf 1401:
1.282 misha 1402: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1403:
1.282 misha 1404: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1405: result_table+=source_table[row];
1406: }
1.277 moko 1407: }
1.282 misha 1408: source_table.set_current(saved_current);
1.148 paf 1409: }
1410:
1.182 paf 1411: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1412: }
1413:
1.66 paf 1414: // constructor
1415:
1.182 paf 1416: MTable::MTable(): Methoded("table") {
1.142 paf 1417: // ^table::create{data}
1418: // ^table::create[nameless]{data}
1419: // ^table::create[table]
1.236 misha 1420: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1421: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1422: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1423:
1.142 paf 1424: // ^table::load[file]
1425: // ^table::load[nameless;file]
1.168 paf 1426: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1427:
1428: // ^table.save[file]
1429: // ^table.save[nameless;file]
1.188 paf 1430: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1431:
1.224 misha 1432: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1433:
1.297 moko 1434: // ^table.csv-string[]
1435: // ^table.csv-string[nameless]
1436: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1437: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1438:
1.6 paf 1439: // ^table.count[]
1.280 misha 1440: // ^table.count[rows]
1441: // ^table.count[columns]
1442: // ^table.count[cells]
1443: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1444:
1445: // ^table.line[]
1.66 paf 1446: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1447:
1.10 paf 1448: // ^table.offset[]
1.133 paf 1449: // ^table.offset(offset)
1450: // ^table.offset[cur|set](offset)
1451: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1452:
1.10 paf 1453: // ^table.menu{code}
1454: // ^table.menu{code}[delim]
1.66 paf 1455: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1456:
1.239 misha 1457: // ^table.hash[key field name]
1458: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1459: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1460:
1.102 parser 1461: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1462: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1463: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1464:
1.36 paf 1465: // ^table.locate[field;value]
1.176 paf 1466: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1467:
1468: // ^table.flip[]
1.66 paf 1469: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1470:
1.293 misha 1471: // ^table.foreach[row-num;value]{code}
1472: // ^table.foreach[row-num;value]{code}[delim]
1473: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1474:
1.41 paf 1475: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1476: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1477:
1.157 paf 1478: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1479: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1480:
1481:
1.239 misha 1482: // ^table::sql[query]
1483: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1484: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1485:
1.239 misha 1486: // ^table.columns[[column name]]
1.233 misha 1487: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1488:
1489: // ^table.select(expression) = table
1.277 moko 1490: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1491: }
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