Annotation of parser3/src/classes/table.C, revision 1.276
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:
1.276 ! moko 8: static const char * const IDENT_TABLE_C="$Date: 2010-10-12 01:26:33 $";
1.229 misha 9:
1.257 misha 10: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 11: #include <sstream>
1.240 misha 12: #endif
1.1 paf 13:
1.105 parser 14: #include "classes.h"
1.182 paf 15: #include "pa_vmethod_frame.h"
16:
1.16 paf 17: #include "pa_common.h"
1.1 paf 18: #include "pa_request.h"
1.265 misha 19: #include "pa_charsets.h"
1.1 paf 20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.1 paf 24:
1.66 paf 25: // class
26:
1.182 paf 27: class MTable: public Methoded {
1.66 paf 28: public: // VStateless_class
1.264 misha 29: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 30: public:
1.182 paf 31: MTable();
1.66 paf 32: };
1.1 paf 33:
1.182 paf 34: // global variable
35:
36: DECLARE_CLASS_VAR(table, new MTable, 0);
37:
38: #define TABLE_REVERSE_NAME "reverse"
39:
40: // globals
41:
1.203 paf 42: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 43: String sql_limit_name(PA_SQL_LIMIT_NAME);
44: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 45: String sql_default_name(SQL_DEFAULT_NAME);
46: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 47: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 48: String table_reverse_name(TABLE_REVERSE_NAME);
49:
1.1 paf 50: // methods
1.66 paf 51:
1.182 paf 52: static Table::Action_options get_action_options(Request& r, MethodParams& params,
1.268 misha 53: size_t options_index, const Table& source) {
1.176 paf 54: Table::Action_options result;
1.268 misha 55: if(params.count() <= options_index)
1.182 paf 56: return result;
57:
1.268 misha 58: Value& maybe_options=params[options_index];
1.182 paf 59: /* can not do it:
60: want to enable ^table::create[$source;
61: # $.option[]
62: ]
63: but there is ^table.locate[name;value]
1.176 paf 64:
1.212 paf 65: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 66: if(maybe_options.is_string()) { // allow empty options
67: result.defined=true;
1.176 paf 68: return result;
1.182 paf 69: }
70: */
71: HashStringValue* options=maybe_options.get_hash();
1.176 paf 72: if(!options)
73: return result;
74:
75: result.defined=true;
76: bool defined_offset=false;
77:
78: int valid_options=0;
1.182 paf 79: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 80: valid_options++;
81: defined_offset=true;
82: if(voffset->is_string()) {
1.182 paf 83: const String& soffset=*voffset->get_string();
1.176 paf 84: if(soffset == "cur")
85: result.offset=source.current();
86: else
1.226 misha 87: throw Exception(PARSER_RUNTIME,
1.176 paf 88: &soffset,
89: "must be 'cur' string or expression");
90: } else
91: result.offset=r.process_to_value(*voffset).as_int();
92: }
1.182 paf 93: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 94: valid_options++;
95: result.limit=r.process_to_value(*vlimit).as_int();
96: }
1.182 paf 97: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
98: valid_options++;
99: result.reverse=r.process_to_value(*vreverse).as_bool();
100: if(result.reverse && !defined_offset)
101: result.offset=source.count()-1;
102: }
103:
104: if(valid_options!=options->count())
1.272 misha 105: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 106:
107: return result;
108: }
1.180 paf 109: static void check_option_param(bool options_defined,
1.182 paf 110: MethodParams& params, size_t next_param_index,
1.176 paf 111: const char *msg) {
1.182 paf 112: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 113: throw Exception(PARSER_RUNTIME,
1.182 paf 114: 0,
1.176 paf 115: "%s", msg);
1.157 paf 116: }
117:
1.236 misha 118: struct TableSeparators {
119: char column; const String* scolumn;
120: char encloser; const String* sencloser;
121:
122: TableSeparators():
1.254 misha 123: column('\t'), scolumn(new String("\t")),
1.236 misha 124: encloser(0), sencloser(0)
125: {}
126: int load( HashStringValue& options ) {
127: int result=0;
128: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
129: scolumn=&vseparator->as_string();
130: if(scolumn->length()!=1)
131: throw Exception(PARSER_RUNTIME,
132: scolumn,
133: "separator must be one character long");
134: column=scolumn->first_char();
135: result++;
136: }
137: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
138: sencloser=&vencloser->as_string();
139: if(sencloser->length()!=1)
140: throw Exception(PARSER_RUNTIME,
141: sencloser,
142: "encloser must be one character long");
143: encloser=sencloser->first_char();
144: result++;
145: }
146: return result;
147: }
148: };
149:
1.182 paf 150: static void _create(Request& r, MethodParams& params) {
1.157 paf 151: // clone/copy part?
1.182 paf 152: if(Table *source=params[0].get_table()) {
1.268 misha 153: Table::Action_options o=get_action_options(r, params, 1, *source);
1.182 paf 154: check_option_param(o.defined, params, 1,
1.176 paf 155: "too many parameters");
1.182 paf 156: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 157: return;
158: }
1.142 paf 159:
1.236 misha 160: size_t data_param_index=0;
161: bool nameless=false;
162:
163: if(params.count()>1) {
164: if(params[0].is_string()){ // can be nameless only
165: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
166: if(snameless!="nameless")
167: throw Exception(PARSER_RUNTIME,
168: &snameless,
169: "table::create called with more then 1 param, first param may be only 'nameless'");
170: nameless=true;
171: data_param_index++;
172: }
173: }
174:
175: HashStringValue *options=0;
176: TableSeparators separators;
177:
178: size_t options_param_index=data_param_index+1;
179: if(
180: options_param_index<params.count()
181: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())
182: ) {
183: // cloning, so that we could change
184: options=new HashStringValue(*options);
185: separators.load(*options);
186: if(separators.encloser){
187: throw Exception(PARSER_RUNTIME,
188: 0,
189: "encloser not supported for table::create yet");
190: }
191: }
192:
193: // data
1.182 paf 194: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
195: const String& data=
1.236 misha 196: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 197:
198: // parse columns
1.182 paf 199: size_t raw_pos_after=0;
200: Table::columns_type columns;
1.236 misha 201:
202: if(nameless){
1.182 paf 203: columns=Table::columns_type(0); // nameless
1.21 paf 204: } else {
1.182 paf 205: columns=Table::columns_type(new ArrayString);
1.44 paf 206:
1.182 paf 207: ArrayString head;
208: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
209: if(head.count()) {
210: size_t col_pos_after=0;
1.236 misha 211: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 212: }
1.44 paf 213: }
214:
1.182 paf 215: Table& table=*new Table(columns);
1.44 paf 216: // parse cells
1.182 paf 217:
218: ArrayString rows;
219: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
220: Array_iterator<const String*> i(rows);
1.98 parser 221: while(i.has_next()) {
1.182 paf 222: Table::element_type row(new ArrayString);
1.252 misha 223: const String& string=*i.next();
1.118 parser 224: // remove comment lines
1.252 misha 225: if(string.is_empty())
1.44 paf 226: continue;
227:
1.182 paf 228: size_t col_pos_after=0;
1.236 misha 229: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 230: table+=row;
1.17 paf 231: }
1.1 paf 232:
1.44 paf 233: // replace any previous table value
1.182 paf 234: GET_SELF(r, VTable).set_table(table);
1.44 paf 235: }
236:
1.187 paf 237: struct lsplit_result {
238: char* piece;
239: char delim;
240:
241: operator bool() { return piece!=0; }
242: };
243:
244: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
245: lsplit_result result;
1.273 misha 246: if(string) {
1.187 paf 247: char delims[]={delim1, delim2, 0};
248: if(char* v=strpbrk(string, delims)) {
249: result.delim=*v;
250: *v=0;
251: result.piece=v+1;
252: return result;
253: }
1.273 misha 254: }
1.187 paf 255: result.piece=0;
256: result.delim=0;
1.273 misha 257: return result;
1.187 paf 258: }
259:
260: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
1.273 misha 261: lsplit_result result;
1.187 paf 262: result.piece=*string_ref;
263: lsplit_result next=lsplit(*string_ref, delim1, delim2);
264: result.delim=next.delim;
265: *string_ref=next.piece;
1.273 misha 266: return result;
1.187 paf 267: }
268:
269: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
270: lsplit_result result;
271:
1.273 misha 272: if(char* string=*string_ref) {
1.187 paf 273: if(encloser && *string==encloser) {
1.273 misha 274: string++;
1.187 paf 275:
276: char *read;
277: char *write;
278: write=read=string;
279: char c;
1.193 paf 280: while((c=*read++)) {
1.187 paf 281: if(c==encloser) {
282: char n=*read;
283: if(n==encloser) // double-encloser stands for encloser
284: read++;
285: else if(n==delim1 || n==delim2) {
286: result.delim=n;
287: read++;
288: break;
289: }
290: }
291:
292: *write++=c;
293: }
294: *write=0; // terminate
295: *string_ref=c? read: 0;
296: result.piece=string;
297: return result;
298: } else
299: return lsplit(string_ref, delim1, delim2);
1.273 misha 300: }
1.187 paf 301: result.piece=0;
1.273 misha 302: return result;
1.187 paf 303: }
304:
305: static void skip_empty_and_comment_lines( char** data_ref ) {
306: if(char *data=*data_ref) {
307: while( char c=*data ) {
308: if( c== '\n' || c == '#' ) {
309: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 310: if(!(*data_ref=data))
311: break;
1.187 paf 312: continue;
313: }
314: break;
315: }
316: }
317: }
318:
1.273 misha 319: static void skip_empty_lines( char** data_ref ) {
320: if(char *data=*data_ref) {
321: while( char c=*data ) {
322: if( c== '\n' ) {
323: /*nowhere=*/getrow(&data); // remove empty lines
324: if(!(*data_ref=data))
325: break;
326: continue;
327: }
328: break;
329: }
330: }
331: }
332:
333: typedef void (*Skip_lines_action)(char** data_ref);
334:
1.182 paf 335: static void _load(Request& r, MethodParams& params) {
1.232 misha 336: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 337: int filename_param_index=0;
338: bool nameless=first_param=="nameless";
339: if(nameless)
340: filename_param_index++;
1.182 paf 341: size_t options_param_index=filename_param_index+1;
1.186 paf 342:
343: HashStringValue *options=0;
1.187 paf 344: TableSeparators separators;
1.186 paf 345: if(options_param_index<params.count()
346: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
347: // cloning, so that we could change [to simplify checks on params inside file_read_text
348: options=new HashStringValue(*options);
1.187 paf 349: separators.load(*options);
1.186 paf 350: }
351:
1.44 paf 352: // loading text
1.247 misha 353: char *data=file_load_text(r,
1.232 misha 354: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 355: true,
1.186 paf 356: options
1.168 paf 357: );
1.44 paf 358:
1.273 misha 359: Skip_lines_action skip_lines_action = (separators.column=='#' || separators.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
360:
1.1 paf 361: // parse columns
1.182 paf 362: Table::columns_type columns;
1.168 paf 363: if(nameless) {
1.182 paf 364: columns=Table::columns_type(0); // nameless
1.1 paf 365: } else {
1.182 paf 366: columns=Table::columns_type(new ArrayString);
1.1 paf 367:
1.273 misha 368: skip_lines_action(&data);
1.187 paf 369: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 370: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 371: if(sr.delim=='\n')
372: break;
1.139 paf 373: }
1.1 paf 374: }
1.187 paf 375:
376: Table& table=*new Table(columns);
1.219 paf 377: int columns_count=columns? columns->count(): 0;
1.1 paf 378:
379: // parse cells
1.218 paf 380: Table::element_type row(new ArrayString(columns_count));
1.273 misha 381: skip_lines_action(&data);
1.187 paf 382: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 383: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
384: break;
1.256 misha 385: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 386: if(sr.delim=='\n') {
387: table+=row;
1.218 paf 388: row=new ArrayString(columns_count);
1.273 misha 389: skip_lines_action(&data);
1.1 paf 390: }
1.187 paf 391: }
392: // last line [if without \n]
393: if(row->count())
1.1 paf 394: table+=row;
1.187 paf 395:
1.1 paf 396: // replace any previous table value
1.182 paf 397: GET_SELF(r, VTable).set_table(table);
1.1 paf 398: }
1.2 paf 399:
1.257 misha 400: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 401:
1.269 misha 402: #include "gc_allocator.h"
403:
404: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
405: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
406:
407: void maybe_enclose( pa_stringstream& to, const String& from, char encloser ) {
1.188 paf 408: if(encloser) {
1.257 misha 409: to<<encloser;
1.188 paf 410: // while we have 'encloser'...
1.189 paf 411: size_t pos_after=0;
1.220 paf 412: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
413: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 414: to<<from.mid(pos_after, pos_before).cstr();
415: to<<encloser; // doubling encloser
1.188 paf 416: }
417: // last piece
418: size_t from_length=from.length();
419: if(pos_after<from_length)
1.257 misha 420: to<<from.mid(pos_after, from_length).cstr();
1.188 paf 421:
1.257 misha 422: to<<encloser;
1.188 paf 423: } else
1.257 misha 424: to<<from.cstr();
1.188 paf 425: }
426:
1.241 misha 427: #else
428:
1.257 misha 429: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.224 misha 430: if(encloser) {
1.257 misha 431: to<<*sencloser;
1.224 misha 432: // while we have 'encloser'...
433: size_t pos_after=0;
434: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
435: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 436: to<<from.mid(pos_after, pos_before);
437: to<<*sencloser; // doubling encloser
1.224 misha 438: }
439: // last piece
440: size_t from_length=from.length();
441: if(pos_after<from_length)
1.257 misha 442: to<<from.mid(pos_after, from_length);
1.224 misha 443:
1.257 misha 444: to<<*sencloser;
1.224 misha 445: } else
1.257 misha 446: to<<from;
1.224 misha 447: }
448:
1.257 misha 449: #endif // don't use stringstream
1.241 misha 450:
451: static void _save(Request& r, MethodParams& params) {
1.237 misha 452: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 453: size_t param_index=1;
454:
455: bool do_append=false;
456: bool output_column_names=true;
457:
458: // mode?
459: if(first_arg=="append")
460: do_append=true;
461: else if(first_arg=="nameless")
462: output_column_names=false;
463: else
464: --param_index;
465:
1.232 misha 466: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 467: String file_spec=r.absolute(file_name);
468:
469: if(do_append && file_exist(file_spec))
470: output_column_names=false;
1.188 paf 471:
472: TableSeparators separators;
473: if(param_index<params.count()) {
1.222 paf 474: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
475: if( voptions.is_defined() && !voptions.is_string() ) {
476: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 477: int valid_options=separators.load(*options);
478: if(valid_options!=options->count())
1.272 misha 479: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.223 paf 480: } else {
1.226 misha 481: throw Exception(PARSER_RUNTIME,
1.188 paf 482: 0,
1.223 paf 483: "additional params must be hash (did you spell mode parameter correctly?)");
484: }
1.222 paf 485: }
1.188 paf 486: }
487: if(param_index<params.count())
1.226 misha 488: throw Exception(PARSER_RUNTIME,
1.188 paf 489: 0,
490: "bad mode (must be nameless or append)");
1.22 paf 491:
1.182 paf 492: Table& table=GET_SELF(r, VTable).table();
1.31 paf 493:
1.257 misha 494: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 495:
1.269 misha 496: pa_stringstream ost(std::stringstream::out);
1.257 misha 497:
498: // process header
1.188 paf 499: if(output_column_names) {
1.31 paf 500: if(table.columns()) { // named table
1.182 paf 501: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 502: maybe_enclose( ost, *i.next(), separators.encloser );
503: if(i.has_next()){
504: ost<<separators.column;
505: }
1.31 paf 506: }
1.188 paf 507: } else { // nameless table [we were asked to output column names]
1.182 paf 508: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 509: for(int column=0; column<lsize; column++) {
1.257 misha 510: if(separators.encloser) {
511: ost<<separators.encloser<<column<<separators.encloser;
512: } else {
513: ost<<column;
514: }
515: if(column<lsize-1){
516: ost<<separators.column;
517: }
1.31 paf 518: }
519: else
1.257 misha 520: ost<<"empty nameless table";
1.31 paf 521: }
1.257 misha 522: ost<<'\n';
1.188 paf 523: }
1.129 paf 524:
1.257 misha 525: // process data lines
1.182 paf 526: Array_iterator<ArrayString*> i(table);
1.98 parser 527: while(i.has_next()) {
1.182 paf 528: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 529: maybe_enclose( ost, *c.next(), separators.encloser );
1.98 parser 530: if(c.has_next())
1.257 misha 531: ost<<separators.column;
1.31 paf 532: }
1.257 misha 533: ost<<'\n';
1.31 paf 534: }
535:
536: // write
1.217 paf 537: {
1.269 misha 538: pa_string data=ost.str();
1.257 misha 539: const char* data_cstr=data.c_str();
540:
1.267 misha 541: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.217 paf 542: }
1.22 paf 543:
1.241 misha 544: #else
1.240 misha 545:
1.257 misha 546: String sdata;
1.224 misha 547: if(output_column_names) {
548: if(table.columns()) { // named table
549: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 550: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
551: if(i.has_next())
552: sdata<<*separators.scolumn;
1.224 misha 553: }
554: } else { // nameless table [we were asked to output column names]
555: if(int lsize=table.count()?table[0]->count():0)
556: for(int column=0; column<lsize; column++) {
1.257 misha 557: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
558: sdata.append_know_length(cindex_tab,
559: snprintf(cindex_tab, MAX_NUMBER,
560: column<lsize-1?"%d%c":"%d", column, separators.column),
561: String::L_CLEAN);
1.224 misha 562: }
563: else
1.257 misha 564: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.224 misha 565: }
1.257 misha 566: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 567: }
568:
1.257 misha 569: // data lines
1.224 misha 570: Array_iterator<ArrayString*> i(table);
571: while(i.has_next()) {
572: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 573: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.224 misha 574: if(c.has_next())
1.257 misha 575: sdata<<*separators.scolumn;
1.224 misha 576: }
1.257 misha 577: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 578: }
579:
580: // write
581: {
1.257 misha 582: const char* data_cstr=sdata.cstr();
1.267 misha 583: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true, do_append);
1.257 misha 584: if(*data_cstr) // not empty (when empty it's not heap memory)
585: pa_free((void*)data_cstr); // not needed anymore
1.224 misha 586: }
1.240 misha 587:
1.257 misha 588: #endif // don't use stringstream
1.224 misha 589: }
590:
1.182 paf 591: static void _count(Request& r, MethodParams&) {
592: int result=GET_SELF(r, VTable).table().count();
593: r.write_no_lang(*new VInt(result));
1.6 paf 594: }
595:
1.182 paf 596: static void _line(Request& r, MethodParams&) {
597: int result=1+GET_SELF(r, VTable).table().current();
598: r.write_no_lang(*new VInt(result));
1.6 paf 599: }
600:
1.182 paf 601: static void _offset(Request& r, MethodParams& params) {
602: Table& table=GET_SELF(r, VTable).table();
603: if(params.count()) {
1.133 paf 604: bool absolute=false;
1.182 paf 605: if(params.count()>1) {
606: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 607: if(whence=="cur")
1.134 paf 608: absolute=false;
1.133 paf 609: else if(whence=="set")
1.134 paf 610: absolute=true;
1.133 paf 611: else
1.226 misha 612: throw Exception(PARSER_RUNTIME,
1.134 paf 613: &whence,
614: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 615: }
1.133 paf 616:
1.211 paf 617: int offset=params.as_int(params.count()-1, "offset must be expression", r);
618: table.offset(absolute, offset);
1.151 paf 619: } else
1.182 paf 620: r.write_no_lang(*new VInt(table.current()));
1.6 paf 621: }
622:
1.182 paf 623: static void _menu(Request& r, MethodParams& params) {
1.263 misha 624: InCycle temp(r);
1.221 paf 625:
1.182 paf 626: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 627:
1.182 paf 628: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 629:
1.182 paf 630: Table& table=GET_SELF(r, VTable).table();
1.99 parser 631: int saved_current=table.current();
1.182 paf 632: int size=table.count();
1.7 paf 633:
1.251 misha 634: if(delim_maybe_code) { // delimiter set
1.250 misha 635: bool need_delim=false;
636: for(int row=0; row<size; row++) {
637: table.set_current(row);
638:
639: StringOrValue sv_processed=r.process(body_code);
640: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
641:
642: const String* s_processed=sv_processed.get_string();
1.251 misha 643: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 644: if(need_delim) // need delim & iteration produced string?
645: r.write_pass_lang(r.process(*delim_maybe_code));
646: else
647: need_delim=true;
648: }
649:
650: r.write_pass_lang(sv_processed);
1.242 misha 651:
1.250 misha 652: if(lskip==Request::SKIP_BREAK)
653: break;
654: }
655: } else {
656: for(int row=0; row<size; row++) {
657: table.set_current(row);
658:
659: r.process_write(body_code);
660: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
661:
662: if(lskip==Request::SKIP_BREAK)
663: break;
1.7 paf 664: }
665: }
1.99 parser 666: table.set_current(saved_current);
1.7 paf 667: }
668:
1.110 parser 669: #ifndef DOXYGEN
1.74 paf 670: struct Row_info {
1.166 paf 671: Request *r;
1.74 paf 672: Table *table;
1.182 paf 673: Value* key_code;
674: size_t key_field;
675: Array<int>* value_fields;
676: HashStringValue* hash;
1.174 paf 677: Table2hash_distint distinct;
1.182 paf 678: size_t row;
1.227 misha 679: Table2hash_value_type value_type;
1.74 paf 680: };
1.110 parser 681: #endif
1.182 paf 682: static void table_row_to_hash(Table::element_type row, Row_info *info) {
683: const String* key;
684: if(info->key_code) {
685: info->table->set_current(info->row++); // change context row
686: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 687: key=&sv_processed.as_string();
1.227 misha 688: } else {
1.182 paf 689: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 690: }
1.166 paf 691:
692: if(!key)
693: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 694:
1.243 misha 695: bool exist=false;
696: switch(info->value_type) {
697: case C_STRING: {
1.271 misha 698: size_t index=info->value_fields->get(0);
699: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 700: break;
1.227 misha 701: }
1.243 misha 702: case C_HASH: {
1.182 paf 703: VHash* vhash=new VHash;
704: HashStringValue& hash=vhash->hash();
705: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
706: size_t value_field=i.next();
707: if(value_field<row->count())
1.174 paf 708: hash.put(
1.182 paf 709: *info->table->columns()->get(value_field),
710: new VString(*row->get(value_field)));
1.174 paf 711: }
712:
1.227 misha 713: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 714: break;
1.174 paf 715: }
1.243 misha 716: case C_TABLE: {
717: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 718: Table* table;
1.227 misha 719: if(vtable) {
1.243 misha 720: if(info->distinct==D_ILLEGAL) {
721: exist=true;
722: break;
723: }
1.174 paf 724: table=vtable->get_table();
1.227 misha 725: } else {
1.174 paf 726: // no? creating table of same structure as source
1.179 paf 727: Table::Action_options table_options(0, 0);
1.182 paf 728: table=new Table(*info->table, table_options/*no rows, just structure*/);
729: info->hash->put(*key, new VTable(table));
1.174 paf 730: }
1.182 paf 731: *table+=row;
1.243 misha 732: break;
1.174 paf 733: }
1.74 paf 734: }
1.227 misha 735: if(exist && info->distinct==D_ILLEGAL)
736: throw Exception(PARSER_RUNTIME,
737: key,
738: "duplicate key");
1.74 paf 739: }
1.235 misha 740:
741: Table2hash_value_type get_value_type(Value& vvalue_type){
742: if(vvalue_type.is_string()) {
743: const String& svalue_type=*vvalue_type.get_string();
744: if(svalue_type == "table"){
745: return C_TABLE;
746: } else if (svalue_type == "string") {
747: return C_STRING;
748: } else if (svalue_type == "hash") {
749: return C_HASH;
750: } else {
751: throw Exception(PARSER_RUNTIME,
752: &svalue_type,
753: "must be 'hash', 'table' or 'string'");
754: }
755: } else {
756: throw Exception(PARSER_RUNTIME,
757: 0,
758: "'type' must be hash");
759: }
760: }
761:
1.182 paf 762: static void _hash(Request& r, MethodParams& params) {
763: Table& self_table=GET_SELF(r, VTable).table();
764: VHash& result=*new VHash;
1.238 misha 765: if(Table::columns_type columns=self_table.columns()){
1.182 paf 766: if(columns->count()>0) {
1.174 paf 767: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 768: Table2hash_value_type value_type=C_HASH;
1.182 paf 769: int param_index=params.count()-1;
1.166 paf 770: if(param_index>0) {
1.238 misha 771: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 772: --param_index;
773: int valid_options=0;
1.238 misha 774: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 775: valid_options++;
1.174 paf 776: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
777: if(vdistinct_value.is_string()) {
778: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 779: if(sdistinct=="tables") {
780: value_type=C_TABLE;
781: distinct=D_FIRST;
1.238 misha 782: } else {
1.226 misha 783: throw Exception(PARSER_RUNTIME,
1.174 paf 784: &sdistinct,
785: "must be 'tables' or true/false");
1.238 misha 786: }
787: } else {
1.174 paf 788: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 789: }
1.166 paf 790: }
1.238 misha 791: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
792: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 793: throw Exception(PARSER_RUNTIME,
794: 0,
1.238 misha 795: "you can't specify $.distinct[tables] and $.type[] together");
796:
797: valid_options++;
798: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
799: }
1.226 misha 800:
1.182 paf 801: if(valid_options!=options->count())
1.272 misha 802: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 803: }
804: }
1.238 misha 805:
806: if(param_index==2) // options was specified but not as hash
1.272 misha 807: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.163 paf 808:
1.182 paf 809: Array<int> value_fields;
1.238 misha 810: if(param_index==0){ // list of columns wasn't specified
811: if(value_type==C_STRING) // $.type[string]
812: throw Exception(PARSER_RUNTIME,
813: 0,
814: "you must specify one value field with option $.type[string]");
815:
816: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
817: value_fields+=i;
818:
819: } else { // list of columns was specified
1.227 misha 820: if(value_type==C_TABLE)
821: throw Exception(PARSER_RUNTIME,
1.174 paf 822: 0,
1.238 misha 823: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
824:
1.182 paf 825: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 826: if(value_fields_param.is_string()) { // one column as string was specified
827: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
828: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
829: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
830: const String& value_field_name =*i.next()->get(0);
831: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 832: }
833: } else
1.226 misha 834: throw Exception(PARSER_RUNTIME,
1.182 paf 835: 0,
1.226 misha 836: "value field(s) must be string or table");
1.239 misha 837: }
1.74 paf 838:
1.227 misha 839: if(value_type==C_STRING && value_fields.count()!=1)
840: throw Exception(PARSER_RUNTIME,
841: 0,
1.238 misha 842: "you can specify only one value field with option $.type[string]");
1.182 paf 843:
844: {
845: Value* key_param=¶ms[0];
1.193 paf 846: Row_info info={
847: &r,
848: &self_table,
849: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 850: /*key_field=*/0/*filled below*/,
1.193 paf 851: &value_fields,
852: &result.hash(),
853: distinct,
1.227 misha 854: /*row=*/0,
855: value_type
1.193 paf 856: };
1.195 paf 857: info.key_field=(info.key_code?-1
858: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 859:
860: int saved_current=self_table.current();
861: self_table.for_each(table_row_to_hash, &info);
862: self_table.set_current(saved_current);
1.207 paf 863:
864: result.extract_default();
1.182 paf 865: }
1.74 paf 866: }
1.238 misha 867: }
1.97 parser 868: r.write_no_lang(result);
1.74 paf 869: }
870:
1.110 parser 871: #ifndef DOXYGEN
1.78 paf 872: struct Table_seq_item {
1.182 paf 873: ArrayString* row;
1.34 paf 874: union {
1.182 paf 875: const char *c_str;
1.34 paf 876: double d;
877: } value;
1.32 paf 878: };
1.110 parser 879: #endif
1.34 paf 880: static int sort_cmp_string(const void *a, const void *b) {
881: return strcmp(
1.78 paf 882: static_cast<const Table_seq_item *>(a)->value.c_str,
883: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 884: );
885: }
886: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 887: double va=static_cast<const Table_seq_item *>(a)->value.d;
888: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 889: if(va<vb)
890: return -1;
891: else if(va>vb)
892: return +1;
893: else
894: return 0;
895: }
1.182 paf 896: static void _sort(Request& r, MethodParams& params) {
897: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 898:
1.182 paf 899: bool reverse=params.count()>1/*..[desc|asc|]*/?
900: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 901: false; // default=asc
1.32 paf 902:
1.182 paf 903: Table& old_table=GET_SELF(r, VTable).table();
904: Table& new_table=*new Table(old_table.columns());
1.34 paf 905:
1.182 paf 906: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 907: int i;
908:
909: // calculate key values
910: bool key_values_are_strings=true;
1.182 paf 911: int old_count=old_table.count();
912: for(i=0; i<old_count; i++) {
1.101 parser 913: old_table.set_current(i);
1.32 paf 914: // calculate key value
1.182 paf 915: seq[i].row=old_table[i];
916: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 917: if(i==0) // determining key values type by first one
918: key_values_are_strings=value.is_string();
919:
920: if(key_values_are_strings)
921: seq[i].value.c_str=value.as_string().cstr();
922: else
923: seq[i].value.d=value.as_double();
1.32 paf 924: }
1.265 misha 925:
926: // @todo: handle this elsewhere
927: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
928: for(i=0; i<old_count; i++)
929: if(*seq[i].value.c_str)
930: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
931: }
932:
1.266 misha 933: // sort keys
1.182 paf 934: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 935: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 936:
1.34 paf 937: // reorder table as they require in 'seq'
1.182 paf 938: for(i=0; i<old_count; i++)
939: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
940:
941: delete[] seq;
1.32 paf 942:
1.116 parser 943: // replace any previous table value
1.182 paf 944: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 945: }
946:
1.176 paf 947: #ifndef DOXYGEN
1.182 paf 948: struct Expression_is_true_info {
1.176 paf 949: Request* r;
950: Value* expression_code;
951: };
952: #endif
1.275 misha 953:
1.191 paf 954: static bool expression_is_true(Table&, Expression_is_true_info* info) {
955: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 956: }
1.275 misha 957:
958: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 959: Value& expression_code=params.as_junction(0, "must be expression");
1.275 misha 960: const size_t options_index=1;
961: Table::Action_options o=get_action_options(r, params, options_index, table);
962: check_option_param(o.defined, params, options_index, "locate by expression only has parameters: expression and, maybe, options");
1.145 paf 963:
1.182 paf 964: Expression_is_true_info info={&r, &expression_code};
965: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 966: }
1.275 misha 967:
968: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 969: const String& name=params.as_string(0, "column name must be string");
1.232 misha 970: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.275 misha 971: const size_t options_index=2;
972: Table::Action_options o=get_action_options(r, params, options_index, table);
973: check_option_param(o.defined, params, options_index, "locate by name has parameters: name, value and, maybe, options");
974:
1.182 paf 975: return table.locate(name, value, o);
976: }
1.275 misha 977:
1.182 paf 978: static void _locate(Request& r, MethodParams& params) {
979: Table& table=GET_SELF(r, VTable).table();
1.72 paf 980:
1.182 paf 981: bool result=params[0].get_junction()?
1.275 misha 982: _locate_expression(table, r, params) :
983: _locate_name_value(table, r, params);
1.249 misha 984: r.write_no_lang(VBool::get(result));
1.145 paf 985: }
1.182 paf 986:
987:
1.191 paf 988: static void _flip(Request& r, MethodParams&) {
1.182 paf 989: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 990: Table& new_table=*new Table(0);
1.182 paf 991: if(size_t old_count=old_table.count())
1.270 misha 992: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 993: for(size_t column=0; column<old_cols; column++) {
994: Table::element_type new_row(new ArrayString(old_count));
995: for(size_t i=0; i<old_count; i++) {
996: Table::element_type old_row=old_table[i];
997: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 998: }
1.182 paf 999: new_table+=new_row;
1.39 paf 1000: }
1001:
1.182 paf 1002: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1003: }
1004:
1.182 paf 1005: static void _append(Request& r, MethodParams& params) {
1006: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1007: const String& string=r.process_to_string(params[0]);
1.41 paf 1008:
1009: // parse cells
1.182 paf 1010: Table::element_type row=new ArrayString;
1011: size_t pos_after=0;
1012: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1013:
1.182 paf 1014: GET_SELF(r, VTable).table()+=row;
1.41 paf 1015: }
1016:
1.182 paf 1017: static void join_named_row(Table& src, Table* dest) {
1018: Table::columns_type dest_columns=dest->columns();
1019: size_t dest_columns_count=dest_columns->count();
1020: Table::element_type dest_row(new ArrayString(dest_columns_count));
1021: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1022: const String* src_item=src.item(*dest_columns->get(dest_column));
1023: *dest_row+=src_item?src_item:new String;
1024: }
1025: *dest+=dest_row;
1026: }
1027: static void join_nameless_row(Table& src, Table* dest) {
1028: *dest+=src[src.current()];
1029: }
1030: static void _join(Request& r, MethodParams& params) {
1031: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1032: if(!maybe_src)
1.226 misha 1033: throw Exception(PARSER_RUNTIME,
1.182 paf 1034: 0,
1.42 paf 1035: "source is not a table");
1.176 paf 1036: Table& src=*maybe_src;
1037:
1.268 misha 1038: Table::Action_options o=get_action_options(r, params, 1, src);
1.182 paf 1039: check_option_param(o.defined, params, 1,
1.176 paf 1040: "invalid extra parameter");
1.42 paf 1041:
1.182 paf 1042: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1043: if(&src == &dest)
1.226 misha 1044: throw Exception(PARSER_RUNTIME,
1.182 paf 1045: 0,
1.42 paf 1046: "source and destination are same table");
1047:
1.193 paf 1048: if(dest.columns()) // dest is named
1.182 paf 1049: src.table_for_each(join_named_row, &dest, o);
1050: else // dest is nameless
1051: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1052: }
1053:
1.94 parser 1054: #ifndef DOXYGEN
1.169 paf 1055: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1056: ArrayString& columns;
1.218 paf 1057: int columns_count;
1.182 paf 1058: ArrayString* row;
1.94 parser 1059: public:
1.182 paf 1060: Table* table;
1061: public:
1062: Table_sql_event_handlers() :
1063: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1064: }
1065:
1.259 misha 1066: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1067: try {
1.274 moko 1068: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1069: return false;
1070: } catch(...) {
1071: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1072: return true;
1073: }
1074: }
1075: bool before_rows(SQL_Error& error) {
1076: try {
1.182 paf 1077: table=new Table(&columns);
1.218 paf 1078: columns_count=columns.count();
1.170 paf 1079: return false;
1080: } catch(...) {
1081: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1082: return true;
1083: }
1084: }
1085: bool add_row(SQL_Error& error) {
1086: try {
1.218 paf 1087: *table+=row=new ArrayString(columns_count);
1.170 paf 1088: return false;
1089: } catch(...) {
1090: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1091: return true;
1092: }
1093: }
1.259 misha 1094: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1095: try {
1.274 moko 1096: *row+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1097: return false;
1098: } catch(...) {
1099: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1100: return true;
1101: }
1.94 parser 1102: }
1103: };
1104: #endif
1.204 paf 1105:
1106: static void marshal_bind(
1107: HashStringValue::key_type aname,
1108: HashStringValue::value_type avalue,
1109: SQL_Driver::Placeholder** pptr)
1110: {
1111: SQL_Driver::Placeholder& ph=**pptr;
1112: ph.name=aname.cstr();
1.261 misha 1113: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1114: ph.is_null=avalue->get_class()==void_class;
1115: ph.were_updated=false;
1116:
1117: (*pptr)++;
1118: }
1119:
1120: // not static, used elsewhere
1121: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1122: int hash_count=hash.count();
1123: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1124: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1125: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1126: return hash_count;
1127: }
1128:
1129: // not static, used elsewhere
1130: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1131: SQL_Driver::Placeholder* ph=placeholders;
1132: for(int i=0; i<placeholder_count; i++, ph++)
1133: if(ph->were_updated) {
1134: Value* value;
1135: if(ph->is_null)
1.248 misha 1136: value=VVoid::get();
1.204 paf 1137: else
1.256 misha 1138: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1139: hash.put(ph->name, value);
1140: }
1141: }
1142:
1.182 paf 1143: static void _sql(Request& r, MethodParams& params) {
1144: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1145:
1.204 paf 1146: HashStringValue* bind=0;
1.244 misha 1147: ulong limit=SQL_NO_LIMIT;
1.100 parser 1148: ulong offset=0;
1.182 paf 1149: if(params.count()>1) {
1150: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1151: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1152: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1153: int valid_options=0;
1.204 paf 1154: if(Value* vbind=options->get(sql_bind_name)) {
1155: valid_options++;
1156: bind=vbind->get_hash();
1157: }
1.182 paf 1158: if(Value* vlimit=options->get(sql_limit_name)) {
1.245 misha 1159: valid_options++;
1160: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1161: }
1.182 paf 1162: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1163: valid_options++;
1.147 paf 1164: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1165: }
1.182 paf 1166: if(valid_options!=options->count())
1.272 misha 1167: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.109 parser 1168: } else
1.272 misha 1169: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.49 paf 1170: }
1171:
1.204 paf 1172: SQL_Driver::Placeholder* placeholders=0;
1173: uint placeholders_count=0;
1174: if(bind)
1175: placeholders_count=marshal_binds(*bind, placeholders);
1176:
1.182 paf 1177: Temp_lang temp_lang(r, String::L_SQL);
1178: const String& statement_string=r.process_to_string(statement);
1.262 misha 1179: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1180:
1.182 paf 1181: Table_sql_event_handlers handlers;
1.135 paf 1182: #ifdef RESOURCES_DEBUG
1183: struct timeval mt[2];
1184: //measure:before
1185: gettimeofday(&mt[0],NULL);
1186: #endif
1.182 paf 1187: r.connection()->query(
1.203 paf 1188: statement_cstr,
1.208 paf 1189: placeholders_count, placeholders,
1.203 paf 1190: offset, limit,
1.160 paf 1191: handlers,
1192: statement_string);
1.135 paf 1193:
1194: #ifdef RESOURCES_DEBUG
1195: //measure:after connect
1196: gettimeofday(&mt[1],NULL);
1197:
1198: double t[2];
1199: for(int i=0;i<2;i++)
1200: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1201:
1202: r.sql_request_time+=t[1]-t[0];
1203: #endif
1.204 paf 1204:
1205: if(bind)
1206: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1207:
1.182 paf 1208: Table& result=
1209: handlers.table?*handlers.table: // query resulted in table? return it
1210: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1211:
1212: // replace any previous table value
1.182 paf 1213: GET_SELF(r, VTable).set_table(result);
1.49 paf 1214: }
1215:
1.233 misha 1216: static void _columns(Request& r, MethodParams& params) {
1217: const String* column_column_name;
1218: if(params.count()>0)
1219: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1220: else
1221: column_column_name=new String("column");
1.88 parser 1222:
1.182 paf 1223: Table::columns_type result_columns(new ArrayString);
1.233 misha 1224: *result_columns+=column_column_name;
1.182 paf 1225: Table& result_table=*new Table(result_columns);
1.88 parser 1226:
1.182 paf 1227: Table& source_table=GET_SELF(r, VTable).table();
1228: if(Table::columns_type source_columns=source_table.columns()) {
1229: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1230: Table::element_type result_row(new ArrayString);
1231: *result_row+=i.next();
1232: result_table+=result_row;
1.88 parser 1233: }
1234: }
1235:
1.182 paf 1236: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1237: }
1238:
1.182 paf 1239: static void _select(Request& r, MethodParams& params) {
1.231 misha 1240: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1241:
1.182 paf 1242: Table& source_table=GET_SELF(r, VTable).table();
1243: Table& result_table=*new Table(source_table.columns());
1.148 paf 1244:
1245: int saved_current=source_table.current();
1.182 paf 1246: int size=source_table.count();
1.148 paf 1247: for(int row=0; row<size; row++) {
1248: source_table.set_current(row);
1249:
1.150 paf 1250: bool condition=r.process_to_value(vcondition,
1.148 paf 1251: false/*don't intercept string*/).as_bool();
1252:
1253: if(condition) // ...condition is true=
1.182 paf 1254: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1255: }
1256: source_table.set_current(saved_current);
1257:
1.182 paf 1258: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1259: }
1260:
1.66 paf 1261: // constructor
1262:
1.182 paf 1263: MTable::MTable(): Methoded("table") {
1.142 paf 1264: // ^table::create{data}
1265: // ^table::create[nameless]{data}
1266: // ^table::create[table]
1.236 misha 1267: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1268: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1269: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1270:
1.142 paf 1271: // ^table::load[file]
1272: // ^table::load[nameless;file]
1.168 paf 1273: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1274:
1275: // ^table.save[file]
1276: // ^table.save[nameless;file]
1.188 paf 1277: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1278:
1.224 misha 1279: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1280:
1.6 paf 1281: // ^table.count[]
1.66 paf 1282: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1283:
1284: // ^table.line[]
1.66 paf 1285: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1286:
1.10 paf 1287: // ^table.offset[]
1.133 paf 1288: // ^table.offset(offset)
1289: // ^table.offset[cur|set](offset)
1290: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1291:
1.10 paf 1292: // ^table.menu{code}
1293: // ^table.menu{code}[delim]
1.66 paf 1294: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1295:
1.239 misha 1296: // ^table.hash[key field name]
1297: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1298: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1299:
1.102 parser 1300: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1301: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1302: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1303:
1.36 paf 1304: // ^table.locate[field;value]
1.176 paf 1305: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1306:
1307: // ^table.flip[]
1.66 paf 1308: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1309:
1310: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1311: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1312:
1.157 paf 1313: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1314: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1315:
1316:
1.239 misha 1317: // ^table::sql[query]
1318: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1319: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1320:
1.239 misha 1321: // ^table.columns[[column name]]
1.233 misha 1322: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1323:
1324: // ^table.select(expression) = table
1325: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1326: }
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