Annotation of parser3/src/classes/table.C, revision 1.274
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.248 misha 4: Copyright (c) 2001-2009 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:
1.274 ! moko 8: static const char * const IDENT_TABLE_C="$Date: 2010-07-21 22:29:05 $";
1.229 misha 9:
1.257 misha 10: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 11: #include <sstream>
1.240 misha 12: #endif
1.1 paf 13:
1.105 parser 14: #include "classes.h"
1.182 paf 15: #include "pa_vmethod_frame.h"
16:
1.16 paf 17: #include "pa_common.h"
1.1 paf 18: #include "pa_request.h"
1.265 misha 19: #include "pa_charsets.h"
1.1 paf 20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.1 paf 24:
1.66 paf 25: // class
26:
1.182 paf 27: class MTable: public Methoded {
1.66 paf 28: public: // VStateless_class
1.264 misha 29: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 30:
31: public:
1.182 paf 32: MTable();
1.70 paf 33:
34: public: // Methoded
1.66 paf 35: bool used_directly() { return true; }
36: };
1.1 paf 37:
1.182 paf 38: // global variable
39:
40: DECLARE_CLASS_VAR(table, new MTable, 0);
41:
42: #define TABLE_REVERSE_NAME "reverse"
43:
44: // globals
45:
1.203 paf 46: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 47: String sql_limit_name(PA_SQL_LIMIT_NAME);
48: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 49: String sql_default_name(SQL_DEFAULT_NAME);
50: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 51: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 52: String table_reverse_name(TABLE_REVERSE_NAME);
53:
1.1 paf 54: // methods
1.66 paf 55:
1.182 paf 56: static Table::Action_options get_action_options(Request& r, MethodParams& params,
1.268 misha 57: size_t options_index, const Table& source) {
1.176 paf 58: Table::Action_options result;
1.268 misha 59: if(params.count() <= options_index)
1.182 paf 60: return result;
61:
1.268 misha 62: Value& maybe_options=params[options_index];
1.182 paf 63: /* can not do it:
64: want to enable ^table::create[$source;
65: # $.option[]
66: ]
67: but there is ^table.locate[name;value]
1.176 paf 68:
1.212 paf 69: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 70: if(maybe_options.is_string()) { // allow empty options
71: result.defined=true;
1.176 paf 72: return result;
1.182 paf 73: }
74: */
75: HashStringValue* options=maybe_options.get_hash();
1.176 paf 76: if(!options)
77: return result;
78:
79: result.defined=true;
80: bool defined_offset=false;
81:
82: int valid_options=0;
1.182 paf 83: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 84: valid_options++;
85: defined_offset=true;
86: if(voffset->is_string()) {
1.182 paf 87: const String& soffset=*voffset->get_string();
1.176 paf 88: if(soffset == "cur")
89: result.offset=source.current();
90: else
1.226 misha 91: throw Exception(PARSER_RUNTIME,
1.176 paf 92: &soffset,
93: "must be 'cur' string or expression");
94: } else
95: result.offset=r.process_to_value(*voffset).as_int();
96: }
1.182 paf 97: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 98: valid_options++;
99: result.limit=r.process_to_value(*vlimit).as_int();
100: }
1.182 paf 101: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
102: valid_options++;
103: result.reverse=r.process_to_value(*vreverse).as_bool();
104: if(result.reverse && !defined_offset)
105: result.offset=source.count()-1;
106: }
107:
108: if(valid_options!=options->count())
1.272 misha 109: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 110:
111: return result;
112: }
1.180 paf 113: static void check_option_param(bool options_defined,
1.182 paf 114: MethodParams& params, size_t next_param_index,
1.176 paf 115: const char *msg) {
1.182 paf 116: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 117: throw Exception(PARSER_RUNTIME,
1.182 paf 118: 0,
1.176 paf 119: "%s", msg);
1.157 paf 120: }
121:
1.236 misha 122: struct TableSeparators {
123: char column; const String* scolumn;
124: char encloser; const String* sencloser;
125:
126: TableSeparators():
1.254 misha 127: column('\t'), scolumn(new String("\t")),
1.236 misha 128: encloser(0), sencloser(0)
129: {}
130: int load( HashStringValue& options ) {
131: int result=0;
132: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
133: scolumn=&vseparator->as_string();
134: if(scolumn->length()!=1)
135: throw Exception(PARSER_RUNTIME,
136: scolumn,
137: "separator must be one character long");
138: column=scolumn->first_char();
139: result++;
140: }
141: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
142: sencloser=&vencloser->as_string();
143: if(sencloser->length()!=1)
144: throw Exception(PARSER_RUNTIME,
145: sencloser,
146: "encloser must be one character long");
147: encloser=sencloser->first_char();
148: result++;
149: }
150: return result;
151: }
152: };
153:
1.182 paf 154: static void _create(Request& r, MethodParams& params) {
1.157 paf 155: // clone/copy part?
1.182 paf 156: if(Table *source=params[0].get_table()) {
1.268 misha 157: Table::Action_options o=get_action_options(r, params, 1, *source);
1.182 paf 158: check_option_param(o.defined, params, 1,
1.176 paf 159: "too many parameters");
1.182 paf 160: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 161: return;
162: }
1.142 paf 163:
1.236 misha 164: size_t data_param_index=0;
165: bool nameless=false;
166:
167: if(params.count()>1) {
168: if(params[0].is_string()){ // can be nameless only
169: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
170: if(snameless!="nameless")
171: throw Exception(PARSER_RUNTIME,
172: &snameless,
173: "table::create called with more then 1 param, first param may be only 'nameless'");
174: nameless=true;
175: data_param_index++;
176: }
177: }
178:
179: HashStringValue *options=0;
180: TableSeparators separators;
181:
182: size_t options_param_index=data_param_index+1;
183: if(
184: options_param_index<params.count()
185: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())
186: ) {
187: // cloning, so that we could change
188: options=new HashStringValue(*options);
189: separators.load(*options);
190: if(separators.encloser){
191: throw Exception(PARSER_RUNTIME,
192: 0,
193: "encloser not supported for table::create yet");
194: }
195: }
196:
197: // data
1.182 paf 198: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
199: const String& data=
1.236 misha 200: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 201:
202: // parse columns
1.182 paf 203: size_t raw_pos_after=0;
204: Table::columns_type columns;
1.236 misha 205:
206: if(nameless){
1.182 paf 207: columns=Table::columns_type(0); // nameless
1.21 paf 208: } else {
1.182 paf 209: columns=Table::columns_type(new ArrayString);
1.44 paf 210:
1.182 paf 211: ArrayString head;
212: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
213: if(head.count()) {
214: size_t col_pos_after=0;
1.236 misha 215: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 216: }
1.44 paf 217: }
218:
1.182 paf 219: Table& table=*new Table(columns);
1.44 paf 220: // parse cells
1.182 paf 221:
222: ArrayString rows;
223: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
224: Array_iterator<const String*> i(rows);
1.98 parser 225: while(i.has_next()) {
1.182 paf 226: Table::element_type row(new ArrayString);
1.252 misha 227: const String& string=*i.next();
1.118 parser 228: // remove comment lines
1.252 misha 229: if(string.is_empty())
1.44 paf 230: continue;
231:
1.182 paf 232: size_t col_pos_after=0;
1.236 misha 233: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 234: table+=row;
1.17 paf 235: }
1.1 paf 236:
1.44 paf 237: // replace any previous table value
1.182 paf 238: GET_SELF(r, VTable).set_table(table);
1.44 paf 239: }
240:
1.187 paf 241: struct lsplit_result {
242: char* piece;
243: char delim;
244:
245: operator bool() { return piece!=0; }
246: };
247:
248: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
249: lsplit_result result;
1.273 misha 250: if(string) {
1.187 paf 251: char delims[]={delim1, delim2, 0};
252: if(char* v=strpbrk(string, delims)) {
253: result.delim=*v;
254: *v=0;
255: result.piece=v+1;
256: return result;
257: }
1.273 misha 258: }
1.187 paf 259: result.piece=0;
260: result.delim=0;
1.273 misha 261: return result;
1.187 paf 262: }
263:
264: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
1.273 misha 265: lsplit_result result;
1.187 paf 266: result.piece=*string_ref;
267: lsplit_result next=lsplit(*string_ref, delim1, delim2);
268: result.delim=next.delim;
269: *string_ref=next.piece;
1.273 misha 270: return result;
1.187 paf 271: }
272:
273: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
274: lsplit_result result;
275:
1.273 misha 276: if(char* string=*string_ref) {
1.187 paf 277: if(encloser && *string==encloser) {
1.273 misha 278: string++;
1.187 paf 279:
280: char *read;
281: char *write;
282: write=read=string;
283: char c;
1.193 paf 284: while((c=*read++)) {
1.187 paf 285: if(c==encloser) {
286: char n=*read;
287: if(n==encloser) // double-encloser stands for encloser
288: read++;
289: else if(n==delim1 || n==delim2) {
290: result.delim=n;
291: read++;
292: break;
293: }
294: }
295:
296: *write++=c;
297: }
298: *write=0; // terminate
299: *string_ref=c? read: 0;
300: result.piece=string;
301: return result;
302: } else
303: return lsplit(string_ref, delim1, delim2);
1.273 misha 304: }
1.187 paf 305: result.piece=0;
1.273 misha 306: return result;
1.187 paf 307: }
308:
309: static void skip_empty_and_comment_lines( char** data_ref ) {
310: if(char *data=*data_ref) {
311: while( char c=*data ) {
312: if( c== '\n' || c == '#' ) {
313: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 314: if(!(*data_ref=data))
315: break;
1.187 paf 316: continue;
317: }
318: break;
319: }
320: }
321: }
322:
1.273 misha 323: static void skip_empty_lines( char** data_ref ) {
324: if(char *data=*data_ref) {
325: while( char c=*data ) {
326: if( c== '\n' ) {
327: /*nowhere=*/getrow(&data); // remove empty lines
328: if(!(*data_ref=data))
329: break;
330: continue;
331: }
332: break;
333: }
334: }
335: }
336:
337: typedef void (*Skip_lines_action)(char** data_ref);
338:
1.182 paf 339: static void _load(Request& r, MethodParams& params) {
1.232 misha 340: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 341: int filename_param_index=0;
342: bool nameless=first_param=="nameless";
343: if(nameless)
344: filename_param_index++;
1.182 paf 345: size_t options_param_index=filename_param_index+1;
1.186 paf 346:
347: HashStringValue *options=0;
1.187 paf 348: TableSeparators separators;
1.186 paf 349: if(options_param_index<params.count()
350: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
351: // cloning, so that we could change [to simplify checks on params inside file_read_text
352: options=new HashStringValue(*options);
1.187 paf 353: separators.load(*options);
1.186 paf 354: }
355:
1.44 paf 356: // loading text
1.247 misha 357: char *data=file_load_text(r,
1.232 misha 358: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 359: true,
1.186 paf 360: options
1.168 paf 361: );
1.44 paf 362:
1.273 misha 363: Skip_lines_action skip_lines_action = (separators.column=='#' || separators.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
364:
1.1 paf 365: // parse columns
1.182 paf 366: Table::columns_type columns;
1.168 paf 367: if(nameless) {
1.182 paf 368: columns=Table::columns_type(0); // nameless
1.1 paf 369: } else {
1.182 paf 370: columns=Table::columns_type(new ArrayString);
1.1 paf 371:
1.273 misha 372: skip_lines_action(&data);
1.187 paf 373: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 374: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 375: if(sr.delim=='\n')
376: break;
1.139 paf 377: }
1.1 paf 378: }
1.187 paf 379:
380: Table& table=*new Table(columns);
1.219 paf 381: int columns_count=columns? columns->count(): 0;
1.1 paf 382:
383: // parse cells
1.218 paf 384: Table::element_type row(new ArrayString(columns_count));
1.273 misha 385: skip_lines_action(&data);
1.187 paf 386: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 387: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
388: break;
1.256 misha 389: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 390: if(sr.delim=='\n') {
391: table+=row;
1.218 paf 392: row=new ArrayString(columns_count);
1.273 misha 393: skip_lines_action(&data);
1.1 paf 394: }
1.187 paf 395: }
396: // last line [if without \n]
397: if(row->count())
1.1 paf 398: table+=row;
1.187 paf 399:
1.1 paf 400: // replace any previous table value
1.182 paf 401: GET_SELF(r, VTable).set_table(table);
1.1 paf 402: }
1.2 paf 403:
1.257 misha 404: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 405:
1.269 misha 406: #include "gc_allocator.h"
407:
408: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
409: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
410:
411: void maybe_enclose( pa_stringstream& to, const String& from, char encloser ) {
1.188 paf 412: if(encloser) {
1.257 misha 413: to<<encloser;
1.188 paf 414: // while we have 'encloser'...
1.189 paf 415: size_t pos_after=0;
1.220 paf 416: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
417: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 418: to<<from.mid(pos_after, pos_before).cstr();
419: to<<encloser; // doubling encloser
1.188 paf 420: }
421: // last piece
422: size_t from_length=from.length();
423: if(pos_after<from_length)
1.257 misha 424: to<<from.mid(pos_after, from_length).cstr();
1.188 paf 425:
1.257 misha 426: to<<encloser;
1.188 paf 427: } else
1.257 misha 428: to<<from.cstr();
1.188 paf 429: }
430:
1.241 misha 431: #else
432:
1.257 misha 433: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.224 misha 434: if(encloser) {
1.257 misha 435: to<<*sencloser;
1.224 misha 436: // while we have 'encloser'...
437: size_t pos_after=0;
438: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
439: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 440: to<<from.mid(pos_after, pos_before);
441: to<<*sencloser; // doubling encloser
1.224 misha 442: }
443: // last piece
444: size_t from_length=from.length();
445: if(pos_after<from_length)
1.257 misha 446: to<<from.mid(pos_after, from_length);
1.224 misha 447:
1.257 misha 448: to<<*sencloser;
1.224 misha 449: } else
1.257 misha 450: to<<from;
1.224 misha 451: }
452:
1.257 misha 453: #endif // don't use stringstream
1.241 misha 454:
455: static void _save(Request& r, MethodParams& params) {
1.237 misha 456: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 457: size_t param_index=1;
458:
459: bool do_append=false;
460: bool output_column_names=true;
461:
462: // mode?
463: if(first_arg=="append")
464: do_append=true;
465: else if(first_arg=="nameless")
466: output_column_names=false;
467: else
468: --param_index;
469:
1.232 misha 470: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 471: String file_spec=r.absolute(file_name);
472:
473: if(do_append && file_exist(file_spec))
474: output_column_names=false;
1.188 paf 475:
476: TableSeparators separators;
477: if(param_index<params.count()) {
1.222 paf 478: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
479: if( voptions.is_defined() && !voptions.is_string() ) {
480: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 481: int valid_options=separators.load(*options);
482: if(valid_options!=options->count())
1.272 misha 483: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.223 paf 484: } else {
1.226 misha 485: throw Exception(PARSER_RUNTIME,
1.188 paf 486: 0,
1.223 paf 487: "additional params must be hash (did you spell mode parameter correctly?)");
488: }
1.222 paf 489: }
1.188 paf 490: }
491: if(param_index<params.count())
1.226 misha 492: throw Exception(PARSER_RUNTIME,
1.188 paf 493: 0,
494: "bad mode (must be nameless or append)");
1.22 paf 495:
1.182 paf 496: Table& table=GET_SELF(r, VTable).table();
1.31 paf 497:
1.257 misha 498: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 499:
1.269 misha 500: pa_stringstream ost(std::stringstream::out);
1.257 misha 501:
502: // process header
1.188 paf 503: if(output_column_names) {
1.31 paf 504: if(table.columns()) { // named table
1.182 paf 505: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 506: maybe_enclose( ost, *i.next(), separators.encloser );
507: if(i.has_next()){
508: ost<<separators.column;
509: }
1.31 paf 510: }
1.188 paf 511: } else { // nameless table [we were asked to output column names]
1.182 paf 512: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 513: for(int column=0; column<lsize; column++) {
1.257 misha 514: if(separators.encloser) {
515: ost<<separators.encloser<<column<<separators.encloser;
516: } else {
517: ost<<column;
518: }
519: if(column<lsize-1){
520: ost<<separators.column;
521: }
1.31 paf 522: }
523: else
1.257 misha 524: ost<<"empty nameless table";
1.31 paf 525: }
1.257 misha 526: ost<<'\n';
1.188 paf 527: }
1.129 paf 528:
1.257 misha 529: // process data lines
1.182 paf 530: Array_iterator<ArrayString*> i(table);
1.98 parser 531: while(i.has_next()) {
1.182 paf 532: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 533: maybe_enclose( ost, *c.next(), separators.encloser );
1.98 parser 534: if(c.has_next())
1.257 misha 535: ost<<separators.column;
1.31 paf 536: }
1.257 misha 537: ost<<'\n';
1.31 paf 538: }
539:
540: // write
1.217 paf 541: {
1.269 misha 542: pa_string data=ost.str();
1.257 misha 543: const char* data_cstr=data.c_str();
544:
1.267 misha 545: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.217 paf 546: }
1.22 paf 547:
1.241 misha 548: #else
1.240 misha 549:
1.257 misha 550: String sdata;
1.224 misha 551: if(output_column_names) {
552: if(table.columns()) { // named table
553: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 554: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
555: if(i.has_next())
556: sdata<<*separators.scolumn;
1.224 misha 557: }
558: } else { // nameless table [we were asked to output column names]
559: if(int lsize=table.count()?table[0]->count():0)
560: for(int column=0; column<lsize; column++) {
1.257 misha 561: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
562: sdata.append_know_length(cindex_tab,
563: snprintf(cindex_tab, MAX_NUMBER,
564: column<lsize-1?"%d%c":"%d", column, separators.column),
565: String::L_CLEAN);
1.224 misha 566: }
567: else
1.257 misha 568: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.224 misha 569: }
1.257 misha 570: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 571: }
572:
1.257 misha 573: // data lines
1.224 misha 574: Array_iterator<ArrayString*> i(table);
575: while(i.has_next()) {
576: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 577: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.224 misha 578: if(c.has_next())
1.257 misha 579: sdata<<*separators.scolumn;
1.224 misha 580: }
1.257 misha 581: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 582: }
583:
584: // write
585: {
1.257 misha 586: const char* data_cstr=sdata.cstr();
1.267 misha 587: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true, do_append);
1.257 misha 588: if(*data_cstr) // not empty (when empty it's not heap memory)
589: pa_free((void*)data_cstr); // not needed anymore
1.224 misha 590: }
1.240 misha 591:
1.257 misha 592: #endif // don't use stringstream
1.224 misha 593: }
594:
1.182 paf 595: static void _count(Request& r, MethodParams&) {
596: int result=GET_SELF(r, VTable).table().count();
597: r.write_no_lang(*new VInt(result));
1.6 paf 598: }
599:
1.182 paf 600: static void _line(Request& r, MethodParams&) {
601: int result=1+GET_SELF(r, VTable).table().current();
602: r.write_no_lang(*new VInt(result));
1.6 paf 603: }
604:
1.182 paf 605: static void _offset(Request& r, MethodParams& params) {
606: Table& table=GET_SELF(r, VTable).table();
607: if(params.count()) {
1.133 paf 608: bool absolute=false;
1.182 paf 609: if(params.count()>1) {
610: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 611: if(whence=="cur")
1.134 paf 612: absolute=false;
1.133 paf 613: else if(whence=="set")
1.134 paf 614: absolute=true;
1.133 paf 615: else
1.226 misha 616: throw Exception(PARSER_RUNTIME,
1.134 paf 617: &whence,
618: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 619: }
1.133 paf 620:
1.211 paf 621: int offset=params.as_int(params.count()-1, "offset must be expression", r);
622: table.offset(absolute, offset);
1.151 paf 623: } else
1.182 paf 624: r.write_no_lang(*new VInt(table.current()));
1.6 paf 625: }
626:
1.182 paf 627: static void _menu(Request& r, MethodParams& params) {
1.263 misha 628: InCycle temp(r);
1.221 paf 629:
1.182 paf 630: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 631:
1.182 paf 632: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 633:
1.182 paf 634: Table& table=GET_SELF(r, VTable).table();
1.99 parser 635: int saved_current=table.current();
1.182 paf 636: int size=table.count();
1.7 paf 637:
1.251 misha 638: if(delim_maybe_code) { // delimiter set
1.250 misha 639: bool need_delim=false;
640: for(int row=0; row<size; row++) {
641: table.set_current(row);
642:
643: StringOrValue sv_processed=r.process(body_code);
644: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
645:
646: const String* s_processed=sv_processed.get_string();
1.251 misha 647: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 648: if(need_delim) // need delim & iteration produced string?
649: r.write_pass_lang(r.process(*delim_maybe_code));
650: else
651: need_delim=true;
652: }
653:
654: r.write_pass_lang(sv_processed);
1.242 misha 655:
1.250 misha 656: if(lskip==Request::SKIP_BREAK)
657: break;
658: }
659: } else {
660: for(int row=0; row<size; row++) {
661: table.set_current(row);
662:
663: r.process_write(body_code);
664: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
665:
666: if(lskip==Request::SKIP_BREAK)
667: break;
1.7 paf 668: }
669: }
1.99 parser 670: table.set_current(saved_current);
1.7 paf 671: }
672:
1.110 parser 673: #ifndef DOXYGEN
1.74 paf 674: struct Row_info {
1.166 paf 675: Request *r;
1.74 paf 676: Table *table;
1.182 paf 677: Value* key_code;
678: size_t key_field;
679: Array<int>* value_fields;
680: HashStringValue* hash;
1.174 paf 681: Table2hash_distint distinct;
1.182 paf 682: size_t row;
1.227 misha 683: Table2hash_value_type value_type;
1.74 paf 684: };
1.110 parser 685: #endif
1.182 paf 686: static void table_row_to_hash(Table::element_type row, Row_info *info) {
687: const String* key;
688: if(info->key_code) {
689: info->table->set_current(info->row++); // change context row
690: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 691: key=&sv_processed.as_string();
1.227 misha 692: } else {
1.182 paf 693: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 694: }
1.166 paf 695:
696: if(!key)
697: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 698:
1.243 misha 699: bool exist=false;
700: switch(info->value_type) {
701: case C_STRING: {
1.271 misha 702: size_t index=info->value_fields->get(0);
703: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 704: break;
1.227 misha 705: }
1.243 misha 706: case C_HASH: {
1.182 paf 707: VHash* vhash=new VHash;
708: HashStringValue& hash=vhash->hash();
709: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
710: size_t value_field=i.next();
711: if(value_field<row->count())
1.174 paf 712: hash.put(
1.182 paf 713: *info->table->columns()->get(value_field),
714: new VString(*row->get(value_field)));
1.174 paf 715: }
716:
1.227 misha 717: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 718: break;
1.174 paf 719: }
1.243 misha 720: case C_TABLE: {
721: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 722: Table* table;
1.227 misha 723: if(vtable) {
1.243 misha 724: if(info->distinct==D_ILLEGAL) {
725: exist=true;
726: break;
727: }
1.174 paf 728: table=vtable->get_table();
1.227 misha 729: } else {
1.174 paf 730: // no? creating table of same structure as source
1.179 paf 731: Table::Action_options table_options(0, 0);
1.182 paf 732: table=new Table(*info->table, table_options/*no rows, just structure*/);
733: info->hash->put(*key, new VTable(table));
1.174 paf 734: }
1.182 paf 735: *table+=row;
1.243 misha 736: break;
1.174 paf 737: }
1.74 paf 738: }
1.227 misha 739: if(exist && info->distinct==D_ILLEGAL)
740: throw Exception(PARSER_RUNTIME,
741: key,
742: "duplicate key");
1.74 paf 743: }
1.235 misha 744:
745: Table2hash_value_type get_value_type(Value& vvalue_type){
746: if(vvalue_type.is_string()) {
747: const String& svalue_type=*vvalue_type.get_string();
748: if(svalue_type == "table"){
749: return C_TABLE;
750: } else if (svalue_type == "string") {
751: return C_STRING;
752: } else if (svalue_type == "hash") {
753: return C_HASH;
754: } else {
755: throw Exception(PARSER_RUNTIME,
756: &svalue_type,
757: "must be 'hash', 'table' or 'string'");
758: }
759: } else {
760: throw Exception(PARSER_RUNTIME,
761: 0,
762: "'type' must be hash");
763: }
764: }
765:
1.182 paf 766: static void _hash(Request& r, MethodParams& params) {
767: Table& self_table=GET_SELF(r, VTable).table();
768: VHash& result=*new VHash;
1.238 misha 769: if(Table::columns_type columns=self_table.columns()){
1.182 paf 770: if(columns->count()>0) {
1.174 paf 771: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 772: Table2hash_value_type value_type=C_HASH;
1.182 paf 773: int param_index=params.count()-1;
1.166 paf 774: if(param_index>0) {
1.238 misha 775: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 776: --param_index;
777: int valid_options=0;
1.238 misha 778: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 779: valid_options++;
1.174 paf 780: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
781: if(vdistinct_value.is_string()) {
782: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 783: if(sdistinct=="tables") {
784: value_type=C_TABLE;
785: distinct=D_FIRST;
1.238 misha 786: } else {
1.226 misha 787: throw Exception(PARSER_RUNTIME,
1.174 paf 788: &sdistinct,
789: "must be 'tables' or true/false");
1.238 misha 790: }
791: } else {
1.174 paf 792: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 793: }
1.166 paf 794: }
1.238 misha 795: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
796: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 797: throw Exception(PARSER_RUNTIME,
798: 0,
1.238 misha 799: "you can't specify $.distinct[tables] and $.type[] together");
800:
801: valid_options++;
802: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
803: }
1.226 misha 804:
1.182 paf 805: if(valid_options!=options->count())
1.272 misha 806: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 807: }
808: }
1.238 misha 809:
810: if(param_index==2) // options was specified but not as hash
1.272 misha 811: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.163 paf 812:
1.182 paf 813: Array<int> value_fields;
1.238 misha 814: if(param_index==0){ // list of columns wasn't specified
815: if(value_type==C_STRING) // $.type[string]
816: throw Exception(PARSER_RUNTIME,
817: 0,
818: "you must specify one value field with option $.type[string]");
819:
820: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
821: value_fields+=i;
822:
823: } else { // list of columns was specified
1.227 misha 824: if(value_type==C_TABLE)
825: throw Exception(PARSER_RUNTIME,
1.174 paf 826: 0,
1.238 misha 827: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
828:
1.182 paf 829: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 830: if(value_fields_param.is_string()) { // one column as string was specified
831: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
832: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
833: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
834: const String& value_field_name =*i.next()->get(0);
835: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 836: }
837: } else
1.226 misha 838: throw Exception(PARSER_RUNTIME,
1.182 paf 839: 0,
1.226 misha 840: "value field(s) must be string or table");
1.239 misha 841: }
1.74 paf 842:
1.227 misha 843: if(value_type==C_STRING && value_fields.count()!=1)
844: throw Exception(PARSER_RUNTIME,
845: 0,
1.238 misha 846: "you can specify only one value field with option $.type[string]");
1.182 paf 847:
848: {
849: Value* key_param=¶ms[0];
1.193 paf 850: Row_info info={
851: &r,
852: &self_table,
853: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 854: /*key_field=*/0/*filled below*/,
1.193 paf 855: &value_fields,
856: &result.hash(),
857: distinct,
1.227 misha 858: /*row=*/0,
859: value_type
1.193 paf 860: };
1.195 paf 861: info.key_field=(info.key_code?-1
862: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 863:
864: int saved_current=self_table.current();
865: self_table.for_each(table_row_to_hash, &info);
866: self_table.set_current(saved_current);
1.207 paf 867:
868: result.extract_default();
1.182 paf 869: }
1.74 paf 870: }
1.238 misha 871: }
1.97 parser 872: r.write_no_lang(result);
1.74 paf 873: }
874:
1.110 parser 875: #ifndef DOXYGEN
1.78 paf 876: struct Table_seq_item {
1.182 paf 877: ArrayString* row;
1.34 paf 878: union {
1.182 paf 879: const char *c_str;
1.34 paf 880: double d;
881: } value;
1.32 paf 882: };
1.110 parser 883: #endif
1.34 paf 884: static int sort_cmp_string(const void *a, const void *b) {
885: return strcmp(
1.78 paf 886: static_cast<const Table_seq_item *>(a)->value.c_str,
887: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 888: );
889: }
890: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 891: double va=static_cast<const Table_seq_item *>(a)->value.d;
892: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 893: if(va<vb)
894: return -1;
895: else if(va>vb)
896: return +1;
897: else
898: return 0;
899: }
1.182 paf 900: static void _sort(Request& r, MethodParams& params) {
901: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 902:
1.182 paf 903: bool reverse=params.count()>1/*..[desc|asc|]*/?
904: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 905: false; // default=asc
1.32 paf 906:
1.182 paf 907: Table& old_table=GET_SELF(r, VTable).table();
908: Table& new_table=*new Table(old_table.columns());
1.34 paf 909:
1.182 paf 910: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 911: int i;
912:
913: // calculate key values
914: bool key_values_are_strings=true;
1.182 paf 915: int old_count=old_table.count();
916: for(i=0; i<old_count; i++) {
1.101 parser 917: old_table.set_current(i);
1.32 paf 918: // calculate key value
1.182 paf 919: seq[i].row=old_table[i];
920: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 921: if(i==0) // determining key values type by first one
922: key_values_are_strings=value.is_string();
923:
924: if(key_values_are_strings)
925: seq[i].value.c_str=value.as_string().cstr();
926: else
927: seq[i].value.d=value.as_double();
1.32 paf 928: }
1.265 misha 929:
930: // @todo: handle this elsewhere
931: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
932: for(i=0; i<old_count; i++)
933: if(*seq[i].value.c_str)
934: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
935: }
936:
1.266 misha 937: // sort keys
1.182 paf 938: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 939: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 940:
1.34 paf 941: // reorder table as they require in 'seq'
1.182 paf 942: for(i=0; i<old_count; i++)
943: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
944:
945: delete[] seq;
1.32 paf 946:
1.116 parser 947: // replace any previous table value
1.182 paf 948: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 949: }
950:
1.176 paf 951: #ifndef DOXYGEN
1.182 paf 952: struct Expression_is_true_info {
1.176 paf 953: Request* r;
954: Value* expression_code;
955: };
956: #endif
1.191 paf 957: static bool expression_is_true(Table&, Expression_is_true_info* info) {
958: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 959: }
960: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 961: Request& r, MethodParams& params) {
962: check_option_param(o.defined, params, 1,
1.176 paf 963: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 964: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 965:
1.182 paf 966: Expression_is_true_info info={&r, &expression_code};
967: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 968: }
1.176 paf 969: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 970: Request&, MethodParams& params) {
1.182 paf 971: check_option_param(o.defined, params, 2,
1.176 paf 972: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 973: const String& name=params.as_string(0, "column name must be string");
1.232 misha 974: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 975: return table.locate(name, value, o);
976: }
977: static void _locate(Request& r, MethodParams& params) {
978: Table& table=GET_SELF(r, VTable).table();
1.72 paf 979:
1.268 misha 980: Table::Action_options o=get_action_options(r, params, 1, table);
1.182 paf 981:
982: bool result=params[0].get_junction()?
983: _locate_expression(table, o, r, params) :
984: _locate_name_value(table, o, r, params);
1.249 misha 985: r.write_no_lang(VBool::get(result));
1.145 paf 986: }
1.182 paf 987:
988:
1.191 paf 989: static void _flip(Request& r, MethodParams&) {
1.182 paf 990: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 991: Table& new_table=*new Table(0);
1.182 paf 992: if(size_t old_count=old_table.count())
1.270 misha 993: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 994: for(size_t column=0; column<old_cols; column++) {
995: Table::element_type new_row(new ArrayString(old_count));
996: for(size_t i=0; i<old_count; i++) {
997: Table::element_type old_row=old_table[i];
998: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 999: }
1.182 paf 1000: new_table+=new_row;
1.39 paf 1001: }
1002:
1.182 paf 1003: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1004: }
1005:
1.182 paf 1006: static void _append(Request& r, MethodParams& params) {
1007: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1008: const String& string=r.process_to_string(params[0]);
1.41 paf 1009:
1010: // parse cells
1.182 paf 1011: Table::element_type row=new ArrayString;
1012: size_t pos_after=0;
1013: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1014:
1.182 paf 1015: GET_SELF(r, VTable).table()+=row;
1.41 paf 1016: }
1017:
1.182 paf 1018: static void join_named_row(Table& src, Table* dest) {
1019: Table::columns_type dest_columns=dest->columns();
1020: size_t dest_columns_count=dest_columns->count();
1021: Table::element_type dest_row(new ArrayString(dest_columns_count));
1022: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1023: const String* src_item=src.item(*dest_columns->get(dest_column));
1024: *dest_row+=src_item?src_item:new String;
1025: }
1026: *dest+=dest_row;
1027: }
1028: static void join_nameless_row(Table& src, Table* dest) {
1029: *dest+=src[src.current()];
1030: }
1031: static void _join(Request& r, MethodParams& params) {
1032: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1033: if(!maybe_src)
1.226 misha 1034: throw Exception(PARSER_RUNTIME,
1.182 paf 1035: 0,
1.42 paf 1036: "source is not a table");
1.176 paf 1037: Table& src=*maybe_src;
1038:
1.268 misha 1039: Table::Action_options o=get_action_options(r, params, 1, src);
1.182 paf 1040: check_option_param(o.defined, params, 1,
1.176 paf 1041: "invalid extra parameter");
1.42 paf 1042:
1.182 paf 1043: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1044: if(&src == &dest)
1.226 misha 1045: throw Exception(PARSER_RUNTIME,
1.182 paf 1046: 0,
1.42 paf 1047: "source and destination are same table");
1048:
1.193 paf 1049: if(dest.columns()) // dest is named
1.182 paf 1050: src.table_for_each(join_named_row, &dest, o);
1051: else // dest is nameless
1052: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1053: }
1054:
1.94 parser 1055: #ifndef DOXYGEN
1.169 paf 1056: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1057: ArrayString& columns;
1.218 paf 1058: int columns_count;
1.182 paf 1059: ArrayString* row;
1.94 parser 1060: public:
1.182 paf 1061: Table* table;
1062: public:
1063: Table_sql_event_handlers() :
1064: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1065: }
1066:
1.259 misha 1067: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1068: try {
1.274 ! moko 1069: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1070: return false;
1071: } catch(...) {
1072: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1073: return true;
1074: }
1075: }
1076: bool before_rows(SQL_Error& error) {
1077: try {
1.182 paf 1078: table=new Table(&columns);
1.218 paf 1079: columns_count=columns.count();
1.170 paf 1080: return false;
1081: } catch(...) {
1082: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1083: return true;
1084: }
1085: }
1086: bool add_row(SQL_Error& error) {
1087: try {
1.218 paf 1088: *table+=row=new ArrayString(columns_count);
1.170 paf 1089: return false;
1090: } catch(...) {
1091: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1092: return true;
1093: }
1094: }
1.259 misha 1095: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1096: try {
1.274 ! moko 1097: *row+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1098: return false;
1099: } catch(...) {
1100: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1101: return true;
1102: }
1.94 parser 1103: }
1104: };
1105: #endif
1.204 paf 1106:
1107: static void marshal_bind(
1108: HashStringValue::key_type aname,
1109: HashStringValue::value_type avalue,
1110: SQL_Driver::Placeholder** pptr)
1111: {
1112: SQL_Driver::Placeholder& ph=**pptr;
1113: ph.name=aname.cstr();
1.261 misha 1114: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1115: ph.is_null=avalue->get_class()==void_class;
1116: ph.were_updated=false;
1117:
1118: (*pptr)++;
1119: }
1120:
1121: // not static, used elsewhere
1122: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1123: int hash_count=hash.count();
1124: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1125: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1126: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1127: return hash_count;
1128: }
1129:
1130: // not static, used elsewhere
1131: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1132: SQL_Driver::Placeholder* ph=placeholders;
1133: for(int i=0; i<placeholder_count; i++, ph++)
1134: if(ph->were_updated) {
1135: Value* value;
1136: if(ph->is_null)
1.248 misha 1137: value=VVoid::get();
1.204 paf 1138: else
1.256 misha 1139: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1140: hash.put(ph->name, value);
1141: }
1142: }
1143:
1.182 paf 1144: static void _sql(Request& r, MethodParams& params) {
1145: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1146:
1.204 paf 1147: HashStringValue* bind=0;
1.244 misha 1148: ulong limit=SQL_NO_LIMIT;
1.100 parser 1149: ulong offset=0;
1.182 paf 1150: if(params.count()>1) {
1151: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1152: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1153: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1154: int valid_options=0;
1.204 paf 1155: if(Value* vbind=options->get(sql_bind_name)) {
1156: valid_options++;
1157: bind=vbind->get_hash();
1158: }
1.182 paf 1159: if(Value* vlimit=options->get(sql_limit_name)) {
1.245 misha 1160: valid_options++;
1161: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1162: }
1.182 paf 1163: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1164: valid_options++;
1.147 paf 1165: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1166: }
1.182 paf 1167: if(valid_options!=options->count())
1.272 misha 1168: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.109 parser 1169: } else
1.272 misha 1170: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.49 paf 1171: }
1172:
1.204 paf 1173: SQL_Driver::Placeholder* placeholders=0;
1174: uint placeholders_count=0;
1175: if(bind)
1176: placeholders_count=marshal_binds(*bind, placeholders);
1177:
1.182 paf 1178: Temp_lang temp_lang(r, String::L_SQL);
1179: const String& statement_string=r.process_to_string(statement);
1.262 misha 1180: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1181:
1.182 paf 1182: Table_sql_event_handlers handlers;
1.135 paf 1183: #ifdef RESOURCES_DEBUG
1184: struct timeval mt[2];
1185: //measure:before
1186: gettimeofday(&mt[0],NULL);
1187: #endif
1.182 paf 1188: r.connection()->query(
1.203 paf 1189: statement_cstr,
1.208 paf 1190: placeholders_count, placeholders,
1.203 paf 1191: offset, limit,
1.160 paf 1192: handlers,
1193: statement_string);
1.135 paf 1194:
1195: #ifdef RESOURCES_DEBUG
1196: //measure:after connect
1197: gettimeofday(&mt[1],NULL);
1198:
1199: double t[2];
1200: for(int i=0;i<2;i++)
1201: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1202:
1203: r.sql_request_time+=t[1]-t[0];
1204: #endif
1.204 paf 1205:
1206: if(bind)
1207: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1208:
1.182 paf 1209: Table& result=
1210: handlers.table?*handlers.table: // query resulted in table? return it
1211: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1212:
1213: // replace any previous table value
1.182 paf 1214: GET_SELF(r, VTable).set_table(result);
1.49 paf 1215: }
1216:
1.233 misha 1217: static void _columns(Request& r, MethodParams& params) {
1218: const String* column_column_name;
1219: if(params.count()>0)
1220: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1221: else
1222: column_column_name=new String("column");
1.88 parser 1223:
1.182 paf 1224: Table::columns_type result_columns(new ArrayString);
1.233 misha 1225: *result_columns+=column_column_name;
1.182 paf 1226: Table& result_table=*new Table(result_columns);
1.88 parser 1227:
1.182 paf 1228: Table& source_table=GET_SELF(r, VTable).table();
1229: if(Table::columns_type source_columns=source_table.columns()) {
1230: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1231: Table::element_type result_row(new ArrayString);
1232: *result_row+=i.next();
1233: result_table+=result_row;
1.88 parser 1234: }
1235: }
1236:
1.182 paf 1237: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1238: }
1239:
1.182 paf 1240: static void _select(Request& r, MethodParams& params) {
1.231 misha 1241: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1242:
1.182 paf 1243: Table& source_table=GET_SELF(r, VTable).table();
1244: Table& result_table=*new Table(source_table.columns());
1.148 paf 1245:
1246: int saved_current=source_table.current();
1.182 paf 1247: int size=source_table.count();
1.148 paf 1248: for(int row=0; row<size; row++) {
1249: source_table.set_current(row);
1250:
1.150 paf 1251: bool condition=r.process_to_value(vcondition,
1.148 paf 1252: false/*don't intercept string*/).as_bool();
1253:
1254: if(condition) // ...condition is true=
1.182 paf 1255: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1256: }
1257: source_table.set_current(saved_current);
1258:
1.182 paf 1259: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1260: }
1261:
1.66 paf 1262: // constructor
1263:
1.182 paf 1264: MTable::MTable(): Methoded("table") {
1.142 paf 1265: // ^table::create{data}
1266: // ^table::create[nameless]{data}
1267: // ^table::create[table]
1.236 misha 1268: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1269: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1270: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1271:
1.142 paf 1272: // ^table::load[file]
1273: // ^table::load[nameless;file]
1.168 paf 1274: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1275:
1276: // ^table.save[file]
1277: // ^table.save[nameless;file]
1.188 paf 1278: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1279:
1.224 misha 1280: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1281:
1.6 paf 1282: // ^table.count[]
1.66 paf 1283: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1284:
1285: // ^table.line[]
1.66 paf 1286: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1287:
1.10 paf 1288: // ^table.offset[]
1.133 paf 1289: // ^table.offset(offset)
1290: // ^table.offset[cur|set](offset)
1291: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1292:
1.10 paf 1293: // ^table.menu{code}
1294: // ^table.menu{code}[delim]
1.66 paf 1295: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1296:
1.239 misha 1297: // ^table.hash[key field name]
1298: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1299: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1300:
1.102 parser 1301: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1302: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1303: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1304:
1.36 paf 1305: // ^table.locate[field;value]
1.176 paf 1306: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1307:
1308: // ^table.flip[]
1.66 paf 1309: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1310:
1311: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1312: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1313:
1.157 paf 1314: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1315: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1316:
1317:
1.239 misha 1318: // ^table::sql[query]
1319: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1320: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1321:
1.239 misha 1322: // ^table.columns[[column name]]
1.233 misha 1323: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1324:
1325: // ^table.select(expression) = table
1326: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1327: }
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