Annotation of parser3/src/classes/table.C, revision 1.235
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.210 paf 4: Copyright (c) 2001-2005 ArtLebedev Group (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:
1.235 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2007/08/28 10:34:49 $";
1.229 misha 9:
10: #include <sstream>
11: using namespace std;
1.1 paf 12:
1.105 parser 13: #include "classes.h"
1.182 paf 14: #include "pa_vmethod_frame.h"
15:
1.16 paf 16: #include "pa_common.h"
1.1 paf 17: #include "pa_request.h"
18: #include "pa_vtable.h"
1.6 paf 19: #include "pa_vint.h"
1.51 paf 20: #include "pa_sql_connection.h"
1.72 paf 21: #include "pa_vbool.h"
1.1 paf 22:
1.66 paf 23: // class
24:
1.182 paf 25: class MTable: public Methoded {
1.66 paf 26: public: // VStateless_class
1.209 paf 27: Value* create_new_value(Pool&, HashStringValue&) { return new VTable(); }
1.66 paf 28:
29: public:
1.182 paf 30: MTable();
1.70 paf 31:
32: public: // Methoded
1.66 paf 33: bool used_directly() { return true; }
34: };
1.1 paf 35:
1.182 paf 36: // global variable
37:
38: DECLARE_CLASS_VAR(table, new MTable, 0);
39:
1.221 paf 40: // externs
41:
42: extern String cycle_data_name;
43:
1.182 paf 44: #define TABLE_REVERSE_NAME "reverse"
45:
46: // globals
47:
1.203 paf 48: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 49: String sql_limit_name(PA_SQL_LIMIT_NAME);
50: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 51: String sql_default_name(SQL_DEFAULT_NAME);
52: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 53: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 54: String table_reverse_name(TABLE_REVERSE_NAME);
55:
1.1 paf 56: // methods
1.66 paf 57:
1.182 paf 58: static Table::Action_options get_action_options(Request& r, MethodParams& params,
59: const Table& source) {
1.176 paf 60: Table::Action_options result;
1.182 paf 61: if(!params.count())
62: return result;
63:
64: Value& maybe_options=params.last();
65: /* can not do it:
66: want to enable ^table::create[$source;
67: # $.option[]
68: ]
69: but there is ^table.locate[name;value]
1.176 paf 70:
1.212 paf 71: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 72: if(maybe_options.is_string()) { // allow empty options
73: result.defined=true;
1.176 paf 74: return result;
1.182 paf 75: }
76: */
77: HashStringValue* options=maybe_options.get_hash();
1.176 paf 78: if(!options)
79: return result;
80:
81: result.defined=true;
82: bool defined_offset=false;
83:
84: int valid_options=0;
1.182 paf 85: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 86: valid_options++;
87: defined_offset=true;
88: if(voffset->is_string()) {
1.182 paf 89: const String& soffset=*voffset->get_string();
1.176 paf 90: if(soffset == "cur")
91: result.offset=source.current();
92: else
1.226 misha 93: throw Exception(PARSER_RUNTIME,
1.176 paf 94: &soffset,
95: "must be 'cur' string or expression");
96: } else
97: result.offset=r.process_to_value(*voffset).as_int();
98: }
1.182 paf 99: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 100: valid_options++;
101: result.limit=r.process_to_value(*vlimit).as_int();
102: }
1.182 paf 103: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
104: valid_options++;
105: result.reverse=r.process_to_value(*vreverse).as_bool();
106: if(result.reverse && !defined_offset)
107: result.offset=source.count()-1;
108: }
109:
110: if(valid_options!=options->count())
1.226 misha 111: throw Exception(PARSER_RUNTIME,
1.182 paf 112: 0,
1.176 paf 113: "called with invalid option");
114:
115: return result;
116: }
1.180 paf 117: static void check_option_param(bool options_defined,
1.182 paf 118: MethodParams& params, size_t next_param_index,
1.176 paf 119: const char *msg) {
1.182 paf 120: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 121: throw Exception(PARSER_RUNTIME,
1.182 paf 122: 0,
1.176 paf 123: "%s", msg);
1.157 paf 124: }
125:
1.182 paf 126: static void _create(Request& r, MethodParams& params) {
1.157 paf 127: // clone/copy part?
1.182 paf 128: if(Table *source=params[0].get_table()) {
129: Table::Action_options o=get_action_options(r, params, *source);
130: check_option_param(o.defined, params, 1,
1.176 paf 131: "too many parameters");
1.182 paf 132: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 133: return;
134: }
1.142 paf 135:
1.1 paf 136: // data is last parameter
1.182 paf 137: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
138: const String& data=
139: r.process_to_string(params.as_junction(params.count()-1, "body must be code"));
1.44 paf 140:
141: // parse columns
1.182 paf 142: size_t raw_pos_after=0;
143: Table::columns_type columns;
144: if(params.count()==2) {
1.216 paf 145: const String& snameless=params.as_string(0, "called with two params, first param may only be string 'nameless'");
1.213 paf 146: if(snameless!="nameless")
1.226 misha 147: throw Exception(PARSER_RUNTIME,
1.213 paf 148: &snameless,
149: "table::create called with two params, first param may only be 'nameless'");
1.182 paf 150: columns=Table::columns_type(0); // nameless
1.21 paf 151: } else {
1.182 paf 152: columns=Table::columns_type(new ArrayString);
1.44 paf 153:
1.182 paf 154: ArrayString head;
155: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
156: if(head.count()) {
157: size_t col_pos_after=0;
158: head[0]->split(*columns, col_pos_after, "\t", String::L_AS_IS);
159: }
1.44 paf 160: }
161:
1.182 paf 162: Table& table=*new Table(columns);
1.44 paf 163: // parse cells
1.182 paf 164:
165: ArrayString rows;
166: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
167: Array_iterator<const String*> i(rows);
1.98 parser 168: while(i.has_next()) {
1.182 paf 169: Table::element_type row(new ArrayString);
170: const String& string=*i.next();
1.118 parser 171: // remove comment lines
1.182 paf 172: if(!string.length())
1.44 paf 173: continue;
174:
1.182 paf 175: size_t col_pos_after=0;
176: string.split(*row, col_pos_after, "\t", String::L_AS_IS);
177: table+=row;
1.17 paf 178: }
1.1 paf 179:
1.44 paf 180: // replace any previous table value
1.182 paf 181: GET_SELF(r, VTable).set_table(table);
1.44 paf 182: }
183:
1.187 paf 184: struct lsplit_result {
185: char* piece;
186: char delim;
187:
188: operator bool() { return piece!=0; }
189: };
190:
191: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
192: lsplit_result result;
193: if(string) {
194: char delims[]={delim1, delim2, 0};
195: if(char* v=strpbrk(string, delims)) {
196: result.delim=*v;
197: *v=0;
198: result.piece=v+1;
199: return result;
200: }
201: }
202: result.piece=0;
203: result.delim=0;
204: return result;
205: }
206:
207: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
208: lsplit_result result;
209: result.piece=*string_ref;
210: lsplit_result next=lsplit(*string_ref, delim1, delim2);
211: result.delim=next.delim;
212: *string_ref=next.piece;
213: return result;
214: }
215:
216: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
217: lsplit_result result;
218:
219: if(char* string=*string_ref) {
220: if(encloser && *string==encloser) {
221: string++;
222:
223: char *read;
224: char *write;
225: write=read=string;
226: char c;
1.193 paf 227: while((c=*read++)) {
1.187 paf 228: if(c==encloser) {
229: char n=*read;
230: if(n==encloser) // double-encloser stands for encloser
231: read++;
232: else if(n==delim1 || n==delim2) {
233: result.delim=n;
234: read++;
235: break;
236: }
237: }
238:
239: *write++=c;
240: }
241: *write=0; // terminate
242: *string_ref=c? read: 0;
243: result.piece=string;
244: return result;
245: } else
246: return lsplit(string_ref, delim1, delim2);
247: }
248: result.piece=0;
249: return result;
250: }
251:
252: static void skip_empty_and_comment_lines( char** data_ref ) {
253: if(char *data=*data_ref) {
254: while( char c=*data ) {
255: if( c== '\n' || c == '#' ) {
256: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 257: if(!(*data_ref=data))
258: break;
1.187 paf 259: continue;
260: }
261: break;
262: }
263: }
264: }
265:
266: struct TableSeparators {
1.206 paf 267: char column; const String* scolumn;
268: char encloser; const String* sencloser;
269:
270: TableSeparators():
271: column('\t'), scolumn(new String("\t", false)),
272: encloser(0), sencloser(0)
273: {}
1.214 paf 274: int load( HashStringValue& options ) {
275: int result=0;
276: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.206 paf 277: scolumn=&vseparator->as_string();
278: if(scolumn->length()!=1)
1.226 misha 279: throw Exception(PARSER_RUNTIME,
1.206 paf 280: scolumn,
1.187 paf 281: "separator must be one character long");
1.206 paf 282: column=scolumn->first_char();
1.214 paf 283: result++;
1.187 paf 284: }
1.214 paf 285: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
1.188 paf 286: sencloser=&vencloser->as_string();
287: if(sencloser->length()!=1)
1.226 misha 288: throw Exception(PARSER_RUNTIME,
1.188 paf 289: sencloser,
1.187 paf 290: "encloser must be one character long");
1.188 paf 291: encloser=sencloser->first_char();
1.214 paf 292: result++;
1.187 paf 293: }
1.214 paf 294: return result;
1.187 paf 295: }
296: };
297:
1.182 paf 298: static void _load(Request& r, MethodParams& params) {
1.232 misha 299: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 300: int filename_param_index=0;
301: bool nameless=first_param=="nameless";
302: if(nameless)
303: filename_param_index++;
1.182 paf 304: size_t options_param_index=filename_param_index+1;
1.186 paf 305:
306: HashStringValue *options=0;
1.187 paf 307: TableSeparators separators;
1.186 paf 308: if(options_param_index<params.count()
309: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
310: // cloning, so that we could change [to simplify checks on params inside file_read_text
311: options=new HashStringValue(*options);
1.187 paf 312: separators.load(*options);
1.186 paf 313: }
314:
1.44 paf 315: // loading text
1.182 paf 316: char *data=file_read_text(r.charsets,
1.232 misha 317: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 318: true,
1.186 paf 319: options
1.168 paf 320: );
1.44 paf 321:
1.1 paf 322: // parse columns
1.182 paf 323: Table::columns_type columns;
1.168 paf 324: if(nameless) {
1.182 paf 325: columns=Table::columns_type(0); // nameless
1.1 paf 326: } else {
1.182 paf 327: columns=Table::columns_type(new ArrayString);
1.1 paf 328:
1.187 paf 329: skip_empty_and_comment_lines(&data);
330: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
331: *columns+=new String(sr.piece, 0, true);
332: if(sr.delim=='\n')
333: break;
1.139 paf 334: }
1.1 paf 335: }
1.187 paf 336:
337: Table& table=*new Table(columns);
1.219 paf 338: int columns_count=columns? columns->count(): 0;
1.1 paf 339:
340: // parse cells
1.218 paf 341: Table::element_type row(new ArrayString(columns_count));
1.187 paf 342: skip_empty_and_comment_lines(&data);
343: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 344: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
345: break;
1.187 paf 346: *row+=new String(sr.piece, 0, true);
347: if(sr.delim=='\n') {
348: table+=row;
1.218 paf 349: row=new ArrayString(columns_count);
1.187 paf 350: skip_empty_and_comment_lines(&data);
1.1 paf 351: }
1.187 paf 352: }
353: // last line [if without \n]
354: if(row->count())
1.1 paf 355: table+=row;
1.187 paf 356:
1.1 paf 357: // replace any previous table value
1.182 paf 358: GET_SELF(r, VTable).set_table(table);
1.1 paf 359: }
1.2 paf 360:
1.224 misha 361: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.188 paf 362: if(encloser) {
363: to<<*sencloser;
364: // while we have 'encloser'...
1.189 paf 365: size_t pos_after=0;
1.220 paf 366: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
367: pos_before++; // including first encloser (and skipping it for next pos)
368: to<<from.mid(pos_after, pos_before);
369: to<<*sencloser; // doubling encloser
1.188 paf 370: }
371: // last piece
372: size_t from_length=from.length();
373: if(pos_after<from_length)
374: to<<from.mid(pos_after, from_length);
375:
376: to<<*sencloser;
377: } else
1.202 paf 378: to<<from;
1.188 paf 379: }
380:
1.224 misha 381: void maybe_enclose( ostringstream& to, const String& from, char encloser ) {
382: if(encloser) {
383: to<<encloser;
384: // while we have 'encloser'...
385: size_t pos_after=0;
386: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
387: pos_before++; // including first encloser (and skipping it for next pos)
388: to<<from.mid(pos_after, pos_before).cstr();
389: to<<encloser; // doubling encloser
390: }
391: // last piece
392: size_t from_length=from.length();
393: if(pos_after<from_length)
394: to<<from.mid(pos_after, from_length).cstr();
395:
396: to<<encloser;
397: } else
398: to<<from.cstr();
399: }
400:
1.188 paf 401:
1.224 misha 402: static void _save_old(Request& r, MethodParams& params) {
1.188 paf 403: const String& first_arg=params.as_string(0, "first argument must not be code");
404: size_t param_index=1;
405:
406: bool do_append=false;
407: bool output_column_names=true;
408:
409: // mode?
410: if(first_arg=="append")
411: do_append=true;
412: else if(first_arg=="nameless")
413: output_column_names=false;
414: else
415: --param_index;
416:
1.232 misha 417: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.188 paf 418:
419: TableSeparators separators;
420: if(param_index<params.count()) {
1.222 paf 421: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
422: if( voptions.is_defined() && !voptions.is_string() ) {
423: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 424: int valid_options=separators.load(*options);
425: if(valid_options!=options->count())
1.226 misha 426: throw Exception(PARSER_RUNTIME,
1.223 paf 427: 0,
428: "invalid option passed");
429: } else {
1.226 misha 430: throw Exception(PARSER_RUNTIME,
1.188 paf 431: 0,
1.223 paf 432: "additional params must be hash (did you spell mode parameter correctly?)");
433: }
1.222 paf 434: }
1.188 paf 435: }
436: if(param_index<params.count())
1.226 misha 437: throw Exception(PARSER_RUNTIME,
1.188 paf 438: 0,
439: "bad mode (must be nameless or append)");
1.22 paf 440:
1.182 paf 441: Table& table=GET_SELF(r, VTable).table();
1.31 paf 442:
1.182 paf 443: String sdata;
1.188 paf 444: if(output_column_names) {
1.31 paf 445: if(table.columns()) { // named table
1.182 paf 446: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.188 paf 447: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
1.98 parser 448: if(i.has_next())
1.206 paf 449: sdata<<*separators.scolumn;
1.31 paf 450: }
1.188 paf 451: } else { // nameless table [we were asked to output column names]
1.182 paf 452: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 453: for(int column=0; column<lsize; column++) {
1.182 paf 454: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
455: sdata.append_know_length(cindex_tab,
1.185 paf 456: snprintf(cindex_tab, MAX_NUMBER,
1.206 paf 457: column<lsize-1?"%d%c":"%d", column, separators.column),
1.185 paf 458: String::L_CLEAN);
1.31 paf 459: }
460: else
1.182 paf 461: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.31 paf 462: }
1.182 paf 463: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.188 paf 464: }
1.129 paf 465:
1.31 paf 466: // data lines
1.182 paf 467: Array_iterator<ArrayString*> i(table);
1.98 parser 468: while(i.has_next()) {
1.182 paf 469: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.188 paf 470: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.98 parser 471: if(c.has_next())
1.206 paf 472: sdata<<*separators.scolumn;
1.31 paf 473: }
1.182 paf 474: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.31 paf 475: }
476:
477: // write
1.217 paf 478: {
479: const char* data_cstr=sdata.cstr();
480: file_write(r.absolute(file_name),
481: data_cstr, sdata.length(), true, do_append);
482: if(*data_cstr) // not empty (when empty it's not heap memory)
483: pa_free((void*)data_cstr); // not needed anymore
484: }
1.22 paf 485: }
486:
1.224 misha 487: static void _save(Request& r, MethodParams& params) {
488: const String& first_arg=params.as_string(0, "first argument must not be code");
489: size_t param_index=1;
490:
491: bool do_append=false;
492: bool output_column_names=true;
493:
494: // mode?
495: if(first_arg=="append")
496: do_append=true;
497: else if(first_arg=="nameless")
498: output_column_names=false;
499: else
500: --param_index;
501:
1.232 misha 502: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.224 misha 503:
504: TableSeparators separators;
505: if(param_index<params.count()) {
506: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
507: if( voptions.is_defined() && !voptions.is_string() ) {
508: if(HashStringValue* options=voptions.get_hash()) {
509: int valid_options=separators.load(*options);
510: if(valid_options!=options->count())
1.226 misha 511: throw Exception(PARSER_RUNTIME,
1.224 misha 512: 0,
513: "invalid option passed");
514: } else {
1.226 misha 515: throw Exception(PARSER_RUNTIME,
1.224 misha 516: 0,
517: "additional params must be hash (did you spell mode parameter correctly?)");
518: }
519: }
520: }
521: if(param_index<params.count())
1.226 misha 522: throw Exception(PARSER_RUNTIME,
1.224 misha 523: 0,
524: "bad mode (must be nameless or append)");
525:
526: Table& table=GET_SELF(r, VTable).table();
527:
528: ostringstream ost(stringstream::out);
529:
530: // process header
531: if(output_column_names) {
532: if(table.columns()) { // named table
533: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
534: maybe_enclose( ost, *i.next(), separators.encloser );
535: if(i.has_next()){
536: ost<<separators.column;
537: }
538: }
539: } else { // nameless table [we were asked to output column names]
540: if(int lsize=table.count()?table[0]->count():0)
541: for(int column=0; column<lsize; column++) {
1.225 misha 542: if(separators.encloser) {
543: ost<<separators.encloser<<column<<separators.encloser;
544: } else {
1.224 misha 545: ost<<column;
1.225 misha 546: }
1.224 misha 547: if(column<lsize-1){
548: ost<<separators.column;
549: }
550: }
551: else
552: ost<<"empty nameless table";
553: }
554: ost<<'\n';
555: }
556:
557: // process data lines
558: Array_iterator<ArrayString*> i(table);
559: while(i.has_next()) {
560: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
561: maybe_enclose( ost, *c.next(), separators.encloser );
562: if(c.has_next())
563: ost<<separators.column;
564: }
565: ost<<'\n';
566: }
567:
568: // write
569: {
570: string data=ost.str();
571: const char* data_cstr = data.c_str();
572:
573: file_write(r.absolute(file_name), data_cstr, data.length(), true /* as text */, do_append);
574: }
575: }
576:
1.182 paf 577: static void _count(Request& r, MethodParams&) {
578: int result=GET_SELF(r, VTable).table().count();
579: r.write_no_lang(*new VInt(result));
1.6 paf 580: }
581:
1.182 paf 582: static void _line(Request& r, MethodParams&) {
583: int result=1+GET_SELF(r, VTable).table().current();
584: r.write_no_lang(*new VInt(result));
1.6 paf 585: }
586:
1.182 paf 587: static void _offset(Request& r, MethodParams& params) {
588: Table& table=GET_SELF(r, VTable).table();
589: if(params.count()) {
1.133 paf 590: bool absolute=false;
1.182 paf 591: if(params.count()>1) {
592: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 593: if(whence=="cur")
1.134 paf 594: absolute=false;
1.133 paf 595: else if(whence=="set")
1.134 paf 596: absolute=true;
1.133 paf 597: else
1.226 misha 598: throw Exception(PARSER_RUNTIME,
1.134 paf 599: &whence,
600: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 601: }
1.133 paf 602:
1.211 paf 603: int offset=params.as_int(params.count()-1, "offset must be expression", r);
604: table.offset(absolute, offset);
1.151 paf 605: } else
1.182 paf 606: r.write_no_lang(*new VInt(table.current()));
1.6 paf 607: }
608:
1.182 paf 609: static void _menu(Request& r, MethodParams& params) {
1.221 paf 610: Temp_hash_value<const String::Body, void*>
611: cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r);
612:
1.182 paf 613: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 614:
1.182 paf 615: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 616:
1.182 paf 617: Table& table=GET_SELF(r, VTable).table();
1.7 paf 618: bool need_delim=false;
1.99 parser 619: int saved_current=table.current();
1.182 paf 620: int size=table.count();
1.99 parser 621: for(int row=0; row<size; row++) {
1.22 paf 622: table.set_current(row);
1.7 paf 623:
1.161 paf 624: StringOrValue sv_processed=r.process(body_code);
1.221 paf 625: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1.182 paf 626: const String* s_processed=sv_processed.get_string();
627: if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 628: if(need_delim) // need delim & iteration produced string?
1.150 paf 629: r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 630: need_delim=true;
631: }
1.161 paf 632: r.write_pass_lang(sv_processed);
1.221 paf 633:
634: if(lskip==Request::SKIP_BREAK)
635: break;
1.7 paf 636: }
1.99 parser 637: table.set_current(saved_current);
1.7 paf 638: }
639:
1.110 parser 640: #ifndef DOXYGEN
1.74 paf 641: struct Row_info {
1.166 paf 642: Request *r;
1.74 paf 643: Table *table;
1.182 paf 644: Value* key_code;
645: size_t key_field;
646: Array<int>* value_fields;
647: HashStringValue* hash;
1.174 paf 648: Table2hash_distint distinct;
1.182 paf 649: size_t row;
1.227 misha 650: Table2hash_value_type value_type;
1.74 paf 651: };
1.110 parser 652: #endif
1.182 paf 653: static void table_row_to_hash(Table::element_type row, Row_info *info) {
654: const String* key;
655: if(info->key_code) {
656: info->table->set_current(info->row++); // change context row
657: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 658: key=&sv_processed.as_string();
1.227 misha 659: } else {
1.182 paf 660: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 661: }
1.166 paf 662:
663: if(!key)
664: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 665:
1.227 misha 666: bool exist = false;
667: switch (info->value_type) {
668: case C_STRING:
669: {
670: exist=info->hash->put_dont_replace(*key, new VString(*row->get(info->value_fields->get(0))));
671: }
672: break;
673: case C_HASH:
1.174 paf 674: {
1.182 paf 675: VHash* vhash=new VHash;
676: HashStringValue& hash=vhash->hash();
677: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
678: size_t value_field=i.next();
679: if(value_field<row->count())
1.174 paf 680: hash.put(
1.182 paf 681: *info->table->columns()->get(value_field),
682: new VString(*row->get(value_field)));
1.174 paf 683: }
684:
1.227 misha 685: exist=info->hash->put_dont_replace(*key, vhash);
1.174 paf 686: }
687: break;
1.227 misha 688: case C_TABLE:
1.174 paf 689: {
1.182 paf 690: VTable* vtable=(VTable*)info->hash->get(*key); // put. table existed?
1.227 misha 691: if( info->distinct==D_ILLEGAL ){
692: exist=true;
693: break;
694: }
695:
1.174 paf 696: Table* table;
1.227 misha 697: if(vtable) {
1.174 paf 698: table=vtable->get_table();
1.227 misha 699: } else {
1.174 paf 700: // no? creating table of same structure as source
1.179 paf 701: Table::Action_options table_options(0, 0);
1.182 paf 702: table=new Table(*info->table, table_options/*no rows, just structure*/);
703: info->hash->put(*key, new VTable(table));
1.174 paf 704: }
1.182 paf 705: *table+=row;
1.174 paf 706: }
707: break;
1.74 paf 708: }
1.227 misha 709: if(exist && info->distinct==D_ILLEGAL)
710: throw Exception(PARSER_RUNTIME,
711: key,
712: "duplicate key");
1.74 paf 713: }
1.235 ! misha 714:
! 715: Table2hash_value_type get_value_type(Value& vvalue_type){
! 716: if(vvalue_type.is_string()) {
! 717: const String& svalue_type=*vvalue_type.get_string();
! 718: if(svalue_type == "table"){
! 719: return C_TABLE;
! 720: } else if (svalue_type == "string") {
! 721: return C_STRING;
! 722: } else if (svalue_type == "hash") {
! 723: return C_HASH;
! 724: } else {
! 725: throw Exception(PARSER_RUNTIME,
! 726: &svalue_type,
! 727: "must be 'hash', 'table' or 'string'");
! 728: }
! 729: } else {
! 730: throw Exception(PARSER_RUNTIME,
! 731: 0,
! 732: "'type' must be hash");
! 733: }
! 734: }
! 735:
1.182 paf 736: static void _hash(Request& r, MethodParams& params) {
737: Table& self_table=GET_SELF(r, VTable).table();
738: VHash& result=*new VHash;
739: if(Table::columns_type columns=self_table.columns())
740: if(columns->count()>0) {
1.174 paf 741: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 742: Table2hash_value_type value_type=C_HASH;
1.182 paf 743: int param_index=params.count()-1;
1.166 paf 744: if(param_index>0) {
1.182 paf 745: if(HashStringValue* options=
1.227 misha 746: params.as_no_junction(param_index, "param must not be code").get_hash()
747: ){
1.166 paf 748: --param_index;
749: int valid_options=0;
1.182 paf 750: if(Value* vdistinct_code=options->get(sql_distinct_name)) {
1.166 paf 751: valid_options++;
1.174 paf 752: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
753: if(vdistinct_value.is_string()) {
754: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 755: if(sdistinct=="tables") {
756: value_type=C_TABLE;
757: distinct=D_FIRST;
758: } else
1.226 misha 759: throw Exception(PARSER_RUNTIME,
1.174 paf 760: &sdistinct,
761: "must be 'tables' or true/false");
762: } else
763: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.166 paf 764: }
1.227 misha 765: if(Value* vvalue_type_code=options->get(sql_value_type_name)) {
1.233 misha 766: if(value_type==C_TABLE){ // $.distinct[tables] was specified already
1.227 misha 767: throw Exception(PARSER_RUNTIME,
768: 0,
1.233 misha 769: "you can't specify $.distinct[tables] and $.type[] together.");
1.227 misha 770: } else {
771: valid_options++;
1.235 ! misha 772: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
1.227 misha 773: }
774: }
1.226 misha 775:
1.182 paf 776: if(valid_options!=options->count())
1.226 misha 777: throw Exception(PARSER_RUNTIME,
1.182 paf 778: 0,
1.166 paf 779: "called with invalid option");
1.163 paf 780: }
781: }
782: if(param_index==2) // bad options param type
1.226 misha 783: throw Exception(PARSER_RUNTIME,
1.182 paf 784: 0,
1.163 paf 785: "options must be hash");
786:
1.182 paf 787: Array<int> value_fields;
1.163 paf 788: if(param_index>0) {
1.227 misha 789: if(value_type==C_TABLE)
790: throw Exception(PARSER_RUNTIME,
1.174 paf 791: 0,
792: "in distinct[tables] mode you may not specify value field(s)");
1.182 paf 793: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.123 parser 794: if(value_fields_param.is_string()) {
1.182 paf 795: value_fields+=self_table.column_name2index(
796: *value_fields_param.get_string(), true);
797: } else if(Table* value_fields_table=value_fields_param.get_table()) {
798: for(Array_iterator<Table::element_type> i(*value_fields_table);
799: i.has_next(); ) {
800: const String& value_field_name
801: =*i.next()->get(0);
802: value_fields
803: +=self_table.column_name2index(value_field_name, true);
1.123 parser 804: }
805: } else
1.226 misha 806: throw Exception(PARSER_RUNTIME,
1.182 paf 807: 0,
1.226 misha 808: "value field(s) must be string or table");
809:
1.123 parser 810: } else { // by all columns, including key
1.227 misha 811: if(value_type==C_STRING)
812: throw Exception(PARSER_RUNTIME,
813: 0,
1.233 misha 814: "with $.type[string] you must specify one value field(s)");
1.227 misha 815: // if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST))
1.182 paf 816: for(size_t i=0; i<columns->count(); i++)
1.174 paf 817: value_fields+=i;
1.74 paf 818: }
819:
1.227 misha 820: if(value_type==C_STRING && value_fields.count()!=1)
821: throw Exception(PARSER_RUNTIME,
822: 0,
823: "you can specify one value field with this $.type[].");
1.182 paf 824:
825: {
826: Value* key_param=¶ms[0];
1.193 paf 827: Row_info info={
828: &r,
829: &self_table,
830: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 831: /*key_field=*/0/*filled below*/,
1.193 paf 832: &value_fields,
833: &result.hash(),
834: distinct,
1.227 misha 835: /*row=*/0,
836: value_type
1.193 paf 837: };
1.195 paf 838: info.key_field=(info.key_code?-1
839: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 840:
841: int saved_current=self_table.current();
842: self_table.for_each(table_row_to_hash, &info);
843: self_table.set_current(saved_current);
1.207 paf 844:
845: result.extract_default();
1.182 paf 846: }
1.74 paf 847: }
1.97 parser 848: r.write_no_lang(result);
1.74 paf 849: }
850:
1.110 parser 851: #ifndef DOXYGEN
1.78 paf 852: struct Table_seq_item {
1.182 paf 853: ArrayString* row;
1.34 paf 854: union {
1.182 paf 855: const char *c_str;
1.34 paf 856: double d;
857: } value;
1.32 paf 858: };
1.110 parser 859: #endif
1.34 paf 860: static int sort_cmp_string(const void *a, const void *b) {
861: return strcmp(
1.78 paf 862: static_cast<const Table_seq_item *>(a)->value.c_str,
863: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 864: );
865: }
866: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 867: double va=static_cast<const Table_seq_item *>(a)->value.d;
868: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 869: if(va<vb)
870: return -1;
871: else if(va>vb)
872: return +1;
873: else
874: return 0;
875: }
1.182 paf 876: static void _sort(Request& r, MethodParams& params) {
877: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 878:
1.182 paf 879: bool reverse=params.count()>1/*..[desc|asc|]*/?
880: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 881: false; // default=asc
1.32 paf 882:
1.182 paf 883: Table& old_table=GET_SELF(r, VTable).table();
884: Table& new_table=*new Table(old_table.columns());
1.34 paf 885:
1.182 paf 886: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 887: int i;
888:
889: // calculate key values
890: bool key_values_are_strings=true;
1.182 paf 891: int old_count=old_table.count();
892: for(i=0; i<old_count; i++) {
1.101 parser 893: old_table.set_current(i);
1.32 paf 894: // calculate key value
1.182 paf 895: seq[i].row=old_table[i];
896: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 897: if(i==0) // determining key values type by first one
898: key_values_are_strings=value.is_string();
899:
900: if(key_values_are_strings)
901: seq[i].value.c_str=value.as_string().cstr();
902: else
903: seq[i].value.d=value.as_double();
1.32 paf 904: }
905: // sort keys
1.182 paf 906: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 907: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 908:
1.34 paf 909: // reorder table as they require in 'seq'
1.182 paf 910: for(i=0; i<old_count; i++)
911: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
912:
913: delete[] seq;
1.32 paf 914:
1.116 parser 915: // replace any previous table value
1.182 paf 916: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 917: }
918:
1.176 paf 919: #ifndef DOXYGEN
1.182 paf 920: struct Expression_is_true_info {
1.176 paf 921: Request* r;
922: Value* expression_code;
923: };
924: #endif
1.191 paf 925: static bool expression_is_true(Table&, Expression_is_true_info* info) {
926: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 927: }
928: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 929: Request& r, MethodParams& params) {
930: check_option_param(o.defined, params, 1,
1.176 paf 931: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 932: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 933:
1.182 paf 934: Expression_is_true_info info={&r, &expression_code};
935: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 936: }
1.176 paf 937: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 938: Request&, MethodParams& params) {
1.182 paf 939: check_option_param(o.defined, params, 2,
1.176 paf 940: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 941: const String& name=params.as_string(0, "column name must be string");
1.232 misha 942: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 943: return table.locate(name, value, o);
944: }
945: static void _locate(Request& r, MethodParams& params) {
946: Table& table=GET_SELF(r, VTable).table();
1.72 paf 947:
1.182 paf 948: Table::Action_options o=get_action_options(r, params, table);
949:
950: bool result=params[0].get_junction()?
951: _locate_expression(table, o, r, params) :
952: _locate_name_value(table, o, r, params);
953: r.write_no_lang(*new VBool(result));
1.145 paf 954: }
1.182 paf 955:
956:
1.191 paf 957: static void _flip(Request& r, MethodParams&) {
1.182 paf 958: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 959: Table& new_table=*new Table(0);
1.182 paf 960: if(size_t old_count=old_table.count())
961: if(size_t old_cols=old_table[0]->count())
962: for(size_t column=0; column<old_cols; column++) {
963: Table::element_type new_row(new ArrayString(old_count));
964: for(size_t i=0; i<old_count; i++) {
965: Table::element_type old_row=old_table[i];
966: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 967: }
1.182 paf 968: new_table+=new_row;
1.39 paf 969: }
970:
1.182 paf 971: r.write_no_lang(*new VTable(&new_table));
1.39 paf 972: }
973:
1.182 paf 974: static void _append(Request& r, MethodParams& params) {
1.134 paf 975: // data
1.182 paf 976: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
977: const String& string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 978:
979: // parse cells
1.182 paf 980: Table::element_type row=new ArrayString;
981: size_t pos_after=0;
982: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 983:
1.182 paf 984: GET_SELF(r, VTable).table()+=row;
1.41 paf 985: }
986:
1.182 paf 987: static void join_named_row(Table& src, Table* dest) {
988: Table::columns_type dest_columns=dest->columns();
989: size_t dest_columns_count=dest_columns->count();
990: Table::element_type dest_row(new ArrayString(dest_columns_count));
991: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
992: const String* src_item=src.item(*dest_columns->get(dest_column));
993: *dest_row+=src_item?src_item:new String;
994: }
995: *dest+=dest_row;
996: }
997: static void join_nameless_row(Table& src, Table* dest) {
998: *dest+=src[src.current()];
999: }
1000: static void _join(Request& r, MethodParams& params) {
1001: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1002: if(!maybe_src)
1.226 misha 1003: throw Exception(PARSER_RUNTIME,
1.182 paf 1004: 0,
1.42 paf 1005: "source is not a table");
1.176 paf 1006: Table& src=*maybe_src;
1007:
1.182 paf 1008: Table::Action_options o=get_action_options(r, params, src);
1009: check_option_param(o.defined, params, 1,
1.176 paf 1010: "invalid extra parameter");
1.42 paf 1011:
1.182 paf 1012: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1013: if(&src == &dest)
1.226 misha 1014: throw Exception(PARSER_RUNTIME,
1.182 paf 1015: 0,
1.42 paf 1016: "source and destination are same table");
1017:
1.193 paf 1018: if(dest.columns()) // dest is named
1.182 paf 1019: src.table_for_each(join_named_row, &dest, o);
1020: else // dest is nameless
1021: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1022: }
1023:
1.94 parser 1024: #ifndef DOXYGEN
1.169 paf 1025: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1026: ArrayString& columns;
1.218 paf 1027: int columns_count;
1.182 paf 1028: ArrayString* row;
1.94 parser 1029: public:
1.182 paf 1030: Table* table;
1031: public:
1032: Table_sql_event_handlers() :
1033: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1034: }
1035:
1.182 paf 1036: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1037: try {
1.182 paf 1038: columns+=new String(str, length, true);
1.170 paf 1039: return false;
1040: } catch(...) {
1041: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1042: return true;
1043: }
1044: }
1045: bool before_rows(SQL_Error& error) {
1046: try {
1.182 paf 1047: table=new Table(&columns);
1.218 paf 1048: columns_count=columns.count();
1.170 paf 1049: return false;
1050: } catch(...) {
1051: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1052: return true;
1053: }
1054: }
1055: bool add_row(SQL_Error& error) {
1056: try {
1.218 paf 1057: *table+=row=new ArrayString(columns_count);
1.170 paf 1058: return false;
1059: } catch(...) {
1060: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1061: return true;
1062: }
1063: }
1.182 paf 1064: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1065: try {
1.182 paf 1066: String& cell=*new String;
1067: if(length)
1068: cell.append_know_length(str, length, String::L_TAINTED);
1069: *row+=&cell;
1.170 paf 1070: return false;
1071: } catch(...) {
1072: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1073: return true;
1074: }
1.94 parser 1075: }
1076: };
1077: #endif
1.204 paf 1078:
1079: static void marshal_bind(
1080: HashStringValue::key_type aname,
1081: HashStringValue::value_type avalue,
1082: SQL_Driver::Placeholder** pptr)
1083: {
1084: SQL_Driver::Placeholder& ph=**pptr;
1085: ph.name=aname.cstr();
1.205 paf 1086: ph.value=avalue->as_string().cstr(String::L_UNSPECIFIED);
1.204 paf 1087: ph.is_null=avalue->get_class()==void_class;
1088: ph.were_updated=false;
1089:
1090: (*pptr)++;
1091: }
1092:
1093: // not static, used elsewhere
1094: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1095: int hash_count=hash.count();
1096: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1097: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1098: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1099: return hash_count;
1100: }
1101:
1102: // not static, used elsewhere
1103: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1104: SQL_Driver::Placeholder* ph=placeholders;
1105: for(int i=0; i<placeholder_count; i++, ph++)
1106: if(ph->were_updated) {
1107: Value* value;
1108: if(ph->is_null)
1109: value=new VVoid();
1110: else
1111: if(ph->value)
1112: value=new VString(*new String(ph->value, 0, true/*tainted*/));
1113: else
1114: value=new VString(*new String());
1115: hash.put(ph->name, value);
1116: }
1117: }
1118:
1.182 paf 1119: static void _sql(Request& r, MethodParams& params) {
1120: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1121:
1.204 paf 1122: HashStringValue* bind=0;
1.53 paf 1123: ulong limit=0;
1.100 parser 1124: ulong offset=0;
1.182 paf 1125: if(params.count()>1) {
1126: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1127: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1128: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1129: int valid_options=0;
1.204 paf 1130: if(Value* vbind=options->get(sql_bind_name)) {
1131: valid_options++;
1132: bind=vbind->get_hash();
1133: }
1.182 paf 1134: if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 1135: valid_options++;
1.147 paf 1136: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1137: }
1.182 paf 1138: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1139: valid_options++;
1.147 paf 1140: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1141: }
1.182 paf 1142: if(valid_options!=options->count())
1.226 misha 1143: throw Exception(PARSER_RUNTIME,
1.182 paf 1144: 0,
1.164 paf 1145: "called with invalid option");
1.109 parser 1146: } else
1.226 misha 1147: throw Exception(PARSER_RUNTIME,
1.182 paf 1148: 0,
1.109 parser 1149: "options must be hash");
1.49 paf 1150: }
1151:
1.204 paf 1152: SQL_Driver::Placeholder* placeholders=0;
1153: uint placeholders_count=0;
1154: if(bind)
1155: placeholders_count=marshal_binds(*bind, placeholders);
1156:
1.182 paf 1157: Temp_lang temp_lang(r, String::L_SQL);
1158: const String& statement_string=r.process_to_string(statement);
1159: const char* statement_cstr=
1160: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
1161: Table_sql_event_handlers handlers;
1.135 paf 1162: #ifdef RESOURCES_DEBUG
1163: struct timeval mt[2];
1164: //measure:before
1165: gettimeofday(&mt[0],NULL);
1166: #endif
1.182 paf 1167: r.connection()->query(
1.203 paf 1168: statement_cstr,
1.208 paf 1169: placeholders_count, placeholders,
1.203 paf 1170: offset, limit,
1.160 paf 1171: handlers,
1172: statement_string);
1.135 paf 1173:
1174: #ifdef RESOURCES_DEBUG
1175: //measure:after connect
1176: gettimeofday(&mt[1],NULL);
1177:
1178: double t[2];
1179: for(int i=0;i<2;i++)
1180: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1181:
1182: r.sql_request_time+=t[1]-t[0];
1183: #endif
1.204 paf 1184:
1185: if(bind)
1186: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1187:
1.182 paf 1188: Table& result=
1189: handlers.table?*handlers.table: // query resulted in table? return it
1190: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1191:
1192: // replace any previous table value
1.182 paf 1193: GET_SELF(r, VTable).set_table(result);
1.49 paf 1194: }
1195:
1.233 misha 1196: static void _columns(Request& r, MethodParams& params) {
1197: const String* column_column_name;
1198: if(params.count()>0)
1199: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1200: else
1201: column_column_name=new String("column");
1.88 parser 1202:
1.182 paf 1203: Table::columns_type result_columns(new ArrayString);
1.233 misha 1204: *result_columns+=column_column_name;
1.182 paf 1205: Table& result_table=*new Table(result_columns);
1.88 parser 1206:
1.182 paf 1207: Table& source_table=GET_SELF(r, VTable).table();
1208: if(Table::columns_type source_columns=source_table.columns()) {
1209: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1210: Table::element_type result_row(new ArrayString);
1211: *result_row+=i.next();
1212: result_table+=result_row;
1.88 parser 1213: }
1214: }
1215:
1.182 paf 1216: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1217: }
1218:
1.182 paf 1219: static void _select(Request& r, MethodParams& params) {
1.231 misha 1220: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1221:
1.182 paf 1222: Table& source_table=GET_SELF(r, VTable).table();
1223: Table& result_table=*new Table(source_table.columns());
1.148 paf 1224:
1225: int saved_current=source_table.current();
1.182 paf 1226: int size=source_table.count();
1.148 paf 1227: for(int row=0; row<size; row++) {
1228: source_table.set_current(row);
1229:
1.150 paf 1230: bool condition=r.process_to_value(vcondition,
1.148 paf 1231: false/*don't intercept string*/).as_bool();
1232:
1233: if(condition) // ...condition is true=
1.182 paf 1234: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1235: }
1236: source_table.set_current(saved_current);
1237:
1.182 paf 1238: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1239: }
1240:
1.66 paf 1241: // constructor
1242:
1.182 paf 1243: MTable::MTable(): Methoded("table") {
1.142 paf 1244: // ^table::create{data}
1245: // ^table::create[nameless]{data}
1246: // ^table::create[table]
1247: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
1248: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1249: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 1250:
1.142 paf 1251: // ^table::load[file]
1252: // ^table::load[nameless;file]
1.168 paf 1253: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1254:
1255: // ^table.save[file]
1256: // ^table.save[nameless;file]
1.188 paf 1257: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1258:
1.224 misha 1259: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1260:
1.6 paf 1261: // ^table.count[]
1.66 paf 1262: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1263:
1264: // ^table.line[]
1.66 paf 1265: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1266:
1.10 paf 1267: // ^table.offset[]
1.133 paf 1268: // ^table.offset(offset)
1269: // ^table.offset[cur|set](offset)
1270: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1271:
1.10 paf 1272: // ^table.menu{code}
1273: // ^table.menu{code}[delim]
1.66 paf 1274: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1275:
1.79 paf 1276: // ^table:hash[key field name]
1.123 parser 1277: // ^table:hash[key field name][value field name(s) string/table]
1.163 paf 1278: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1279:
1.102 parser 1280: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1281: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1282: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1283:
1.36 paf 1284: // ^table.locate[field;value]
1.176 paf 1285: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1286:
1287: // ^table.flip[]
1.66 paf 1288: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1289:
1290: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1291: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1292:
1.157 paf 1293: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1294: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1295:
1296:
1.100 parser 1297: // ^table:sql[query]
1298: // ^table:sql[query][$.limit(1) $.offset(2)]
1299: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1300:
1.233 misha 1301: // ^table:columns[[column name]]
1302: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1303:
1304: // ^table.select(expression) = table
1305: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1306: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to table.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes