Annotation of parser3/src/classes/table.C, revision 1.284
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:
1.284 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2011-11-22 22:23:19 $";
1.229 misha 9:
1.257 misha 10: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 11: #include <sstream>
1.240 misha 12: #endif
1.1 paf 13:
1.105 parser 14: #include "classes.h"
1.182 paf 15: #include "pa_vmethod_frame.h"
16:
1.16 paf 17: #include "pa_common.h"
1.1 paf 18: #include "pa_request.h"
1.265 misha 19: #include "pa_charsets.h"
1.1 paf 20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.277 moko 24: #include "pa_array.h"
1.1 paf 25:
1.66 paf 26: // class
27:
1.182 paf 28: class MTable: public Methoded {
1.66 paf 29: public: // VStateless_class
1.264 misha 30: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 31: public:
1.182 paf 32: MTable();
1.66 paf 33: };
1.1 paf 34:
1.182 paf 35: // global variable
36:
37: DECLARE_CLASS_VAR(table, new MTable, 0);
38:
39: #define TABLE_REVERSE_NAME "reverse"
40:
41: // globals
42:
1.203 paf 43: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 44: String sql_limit_name(PA_SQL_LIMIT_NAME);
45: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 46: String sql_default_name(SQL_DEFAULT_NAME);
47: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 48: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 49: String table_reverse_name(TABLE_REVERSE_NAME);
50:
1.1 paf 51: // methods
1.66 paf 52:
1.182 paf 53: static Table::Action_options get_action_options(Request& r, MethodParams& params,
1.268 misha 54: size_t options_index, const Table& source) {
1.176 paf 55: Table::Action_options result;
1.268 misha 56: if(params.count() <= options_index)
1.182 paf 57: return result;
58:
1.268 misha 59: Value& maybe_options=params[options_index];
1.182 paf 60: /* can not do it:
61: want to enable ^table::create[$source;
62: # $.option[]
63: ]
64: but there is ^table.locate[name;value]
1.176 paf 65:
1.212 paf 66: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 67: if(maybe_options.is_string()) { // allow empty options
68: result.defined=true;
1.176 paf 69: return result;
1.182 paf 70: }
71: */
72: HashStringValue* options=maybe_options.get_hash();
1.176 paf 73: if(!options)
74: return result;
75:
76: result.defined=true;
77: bool defined_offset=false;
78:
79: int valid_options=0;
1.182 paf 80: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 81: valid_options++;
82: defined_offset=true;
83: if(voffset->is_string()) {
1.182 paf 84: const String& soffset=*voffset->get_string();
1.176 paf 85: if(soffset == "cur")
86: result.offset=source.current();
87: else
1.226 misha 88: throw Exception(PARSER_RUNTIME,
1.176 paf 89: &soffset,
90: "must be 'cur' string or expression");
91: } else
92: result.offset=r.process_to_value(*voffset).as_int();
93: }
1.182 paf 94: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 95: valid_options++;
96: result.limit=r.process_to_value(*vlimit).as_int();
97: }
1.182 paf 98: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
99: valid_options++;
100: result.reverse=r.process_to_value(*vreverse).as_bool();
101: if(result.reverse && !defined_offset)
102: result.offset=source.count()-1;
103: }
104:
105: if(valid_options!=options->count())
1.272 misha 106: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 107:
108: return result;
109: }
1.180 paf 110: static void check_option_param(bool options_defined,
1.182 paf 111: MethodParams& params, size_t next_param_index,
1.176 paf 112: const char *msg) {
1.182 paf 113: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 114: throw Exception(PARSER_RUNTIME,
1.182 paf 115: 0,
1.176 paf 116: "%s", msg);
1.157 paf 117: }
118:
1.236 misha 119: struct TableSeparators {
120: char column; const String* scolumn;
121: char encloser; const String* sencloser;
122:
123: TableSeparators():
1.254 misha 124: column('\t'), scolumn(new String("\t")),
1.236 misha 125: encloser(0), sencloser(0)
126: {}
127: int load( HashStringValue& options ) {
128: int result=0;
129: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
130: scolumn=&vseparator->as_string();
131: if(scolumn->length()!=1)
132: throw Exception(PARSER_RUNTIME,
133: scolumn,
134: "separator must be one character long");
135: column=scolumn->first_char();
136: result++;
137: }
138: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
139: sencloser=&vencloser->as_string();
140: if(sencloser->length()!=1)
141: throw Exception(PARSER_RUNTIME,
142: sencloser,
143: "encloser must be one character long");
144: encloser=sencloser->first_char();
145: result++;
146: }
147: return result;
148: }
149: };
150:
1.182 paf 151: static void _create(Request& r, MethodParams& params) {
1.157 paf 152: // clone/copy part?
1.182 paf 153: if(Table *source=params[0].get_table()) {
1.268 misha 154: Table::Action_options o=get_action_options(r, params, 1, *source);
1.182 paf 155: check_option_param(o.defined, params, 1,
1.176 paf 156: "too many parameters");
1.182 paf 157: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 158: return;
159: }
1.142 paf 160:
1.236 misha 161: size_t data_param_index=0;
162: bool nameless=false;
163:
164: if(params.count()>1) {
165: if(params[0].is_string()){ // can be nameless only
166: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
167: if(snameless!="nameless")
168: throw Exception(PARSER_RUNTIME,
169: &snameless,
170: "table::create called with more then 1 param, first param may be only 'nameless'");
171: nameless=true;
172: data_param_index++;
173: }
174: }
175:
176: HashStringValue *options=0;
177: TableSeparators separators;
178:
179: size_t options_param_index=data_param_index+1;
180: if(
181: options_param_index<params.count()
182: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())
183: ) {
184: // cloning, so that we could change
185: options=new HashStringValue(*options);
186: separators.load(*options);
187: if(separators.encloser){
188: throw Exception(PARSER_RUNTIME,
189: 0,
190: "encloser not supported for table::create yet");
191: }
192: }
193:
194: // data
1.182 paf 195: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
196: const String& data=
1.236 misha 197: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 198:
199: // parse columns
1.182 paf 200: size_t raw_pos_after=0;
201: Table::columns_type columns;
1.236 misha 202:
203: if(nameless){
1.182 paf 204: columns=Table::columns_type(0); // nameless
1.21 paf 205: } else {
1.182 paf 206: columns=Table::columns_type(new ArrayString);
1.44 paf 207:
1.182 paf 208: ArrayString head;
209: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
210: if(head.count()) {
211: size_t col_pos_after=0;
1.236 misha 212: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 213: }
1.44 paf 214: }
215:
1.182 paf 216: Table& table=*new Table(columns);
1.44 paf 217: // parse cells
1.182 paf 218:
219: ArrayString rows;
220: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
221: Array_iterator<const String*> i(rows);
1.98 parser 222: while(i.has_next()) {
1.182 paf 223: Table::element_type row(new ArrayString);
1.252 misha 224: const String& string=*i.next();
1.118 parser 225: // remove comment lines
1.252 misha 226: if(string.is_empty())
1.44 paf 227: continue;
228:
1.182 paf 229: size_t col_pos_after=0;
1.236 misha 230: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 231: table+=row;
1.17 paf 232: }
1.1 paf 233:
1.44 paf 234: // replace any previous table value
1.182 paf 235: GET_SELF(r, VTable).set_table(table);
1.44 paf 236: }
237:
1.187 paf 238: struct lsplit_result {
239: char* piece;
240: char delim;
241:
242: operator bool() { return piece!=0; }
243: };
244:
245: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
246: lsplit_result result;
1.273 misha 247: if(string) {
1.187 paf 248: char delims[]={delim1, delim2, 0};
249: if(char* v=strpbrk(string, delims)) {
250: result.delim=*v;
251: *v=0;
252: result.piece=v+1;
253: return result;
254: }
1.273 misha 255: }
1.187 paf 256: result.piece=0;
257: result.delim=0;
1.273 misha 258: return result;
1.187 paf 259: }
260:
261: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
1.273 misha 262: lsplit_result result;
1.187 paf 263: result.piece=*string_ref;
264: lsplit_result next=lsplit(*string_ref, delim1, delim2);
265: result.delim=next.delim;
266: *string_ref=next.piece;
1.273 misha 267: return result;
1.187 paf 268: }
269:
270: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
271: lsplit_result result;
272:
1.273 misha 273: if(char* string=*string_ref) {
1.187 paf 274: if(encloser && *string==encloser) {
1.273 misha 275: string++;
1.187 paf 276:
277: char *read;
278: char *write;
279: write=read=string;
280: char c;
1.193 paf 281: while((c=*read++)) {
1.187 paf 282: if(c==encloser) {
283: char n=*read;
284: if(n==encloser) // double-encloser stands for encloser
285: read++;
286: else if(n==delim1 || n==delim2) {
287: result.delim=n;
288: read++;
289: break;
290: }
291: }
292:
293: *write++=c;
294: }
295: *write=0; // terminate
296: *string_ref=c? read: 0;
297: result.piece=string;
298: return result;
299: } else
300: return lsplit(string_ref, delim1, delim2);
1.273 misha 301: }
1.187 paf 302: result.piece=0;
1.273 misha 303: return result;
1.187 paf 304: }
305:
306: static void skip_empty_and_comment_lines( char** data_ref ) {
307: if(char *data=*data_ref) {
308: while( char c=*data ) {
309: if( c== '\n' || c == '#' ) {
310: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 311: if(!(*data_ref=data))
312: break;
1.187 paf 313: continue;
314: }
315: break;
316: }
317: }
318: }
319:
1.273 misha 320: static void skip_empty_lines( char** data_ref ) {
321: if(char *data=*data_ref) {
322: while( char c=*data ) {
323: if( c== '\n' ) {
324: /*nowhere=*/getrow(&data); // remove empty lines
325: if(!(*data_ref=data))
326: break;
327: continue;
328: }
329: break;
330: }
331: }
332: }
333:
334: typedef void (*Skip_lines_action)(char** data_ref);
335:
1.182 paf 336: static void _load(Request& r, MethodParams& params) {
1.232 misha 337: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 338: int filename_param_index=0;
339: bool nameless=first_param=="nameless";
340: if(nameless)
341: filename_param_index++;
1.182 paf 342: size_t options_param_index=filename_param_index+1;
1.186 paf 343:
344: HashStringValue *options=0;
1.187 paf 345: TableSeparators separators;
1.186 paf 346: if(options_param_index<params.count()
347: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
348: // cloning, so that we could change [to simplify checks on params inside file_read_text
349: options=new HashStringValue(*options);
1.187 paf 350: separators.load(*options);
1.186 paf 351: }
352:
1.44 paf 353: // loading text
1.247 misha 354: char *data=file_load_text(r,
1.232 misha 355: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 356: true,
1.186 paf 357: options
1.168 paf 358: );
1.44 paf 359:
1.273 misha 360: Skip_lines_action skip_lines_action = (separators.column=='#' || separators.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
361:
1.1 paf 362: // parse columns
1.182 paf 363: Table::columns_type columns;
1.168 paf 364: if(nameless) {
1.182 paf 365: columns=Table::columns_type(0); // nameless
1.1 paf 366: } else {
1.182 paf 367: columns=Table::columns_type(new ArrayString);
1.1 paf 368:
1.273 misha 369: skip_lines_action(&data);
1.187 paf 370: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 371: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 372: if(sr.delim=='\n')
373: break;
1.139 paf 374: }
1.1 paf 375: }
1.187 paf 376:
377: Table& table=*new Table(columns);
1.219 paf 378: int columns_count=columns? columns->count(): 0;
1.1 paf 379:
380: // parse cells
1.218 paf 381: Table::element_type row(new ArrayString(columns_count));
1.273 misha 382: skip_lines_action(&data);
1.187 paf 383: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 384: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
385: break;
1.256 misha 386: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 387: if(sr.delim=='\n') {
388: table+=row;
1.218 paf 389: row=new ArrayString(columns_count);
1.273 misha 390: skip_lines_action(&data);
1.1 paf 391: }
1.187 paf 392: }
393: // last line [if without \n]
394: if(row->count())
1.1 paf 395: table+=row;
1.187 paf 396:
1.1 paf 397: // replace any previous table value
1.182 paf 398: GET_SELF(r, VTable).set_table(table);
1.1 paf 399: }
1.2 paf 400:
1.257 misha 401: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 402:
1.269 misha 403: #include "gc_allocator.h"
404:
405: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
406: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
407:
408: void maybe_enclose( pa_stringstream& to, const String& from, char encloser ) {
1.188 paf 409: if(encloser) {
1.257 misha 410: to<<encloser;
1.188 paf 411: // while we have 'encloser'...
1.189 paf 412: size_t pos_after=0;
1.220 paf 413: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
414: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 415: to<<from.mid(pos_after, pos_before).cstr();
416: to<<encloser; // doubling encloser
1.188 paf 417: }
418: // last piece
419: size_t from_length=from.length();
420: if(pos_after<from_length)
1.257 misha 421: to<<from.mid(pos_after, from_length).cstr();
1.188 paf 422:
1.257 misha 423: to<<encloser;
1.188 paf 424: } else
1.257 misha 425: to<<from.cstr();
1.188 paf 426: }
427:
1.241 misha 428: #else
429:
1.257 misha 430: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.224 misha 431: if(encloser) {
1.257 misha 432: to<<*sencloser;
1.224 misha 433: // while we have 'encloser'...
434: size_t pos_after=0;
435: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
436: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 437: to<<from.mid(pos_after, pos_before);
438: to<<*sencloser; // doubling encloser
1.224 misha 439: }
440: // last piece
441: size_t from_length=from.length();
442: if(pos_after<from_length)
1.257 misha 443: to<<from.mid(pos_after, from_length);
1.224 misha 444:
1.257 misha 445: to<<*sencloser;
1.224 misha 446: } else
1.257 misha 447: to<<from;
1.224 misha 448: }
449:
1.257 misha 450: #endif // don't use stringstream
1.241 misha 451:
452: static void _save(Request& r, MethodParams& params) {
1.237 misha 453: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 454: size_t param_index=1;
455:
456: bool do_append=false;
457: bool output_column_names=true;
458:
459: // mode?
460: if(first_arg=="append")
461: do_append=true;
462: else if(first_arg=="nameless")
463: output_column_names=false;
464: else
465: --param_index;
466:
1.232 misha 467: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 468: String file_spec=r.absolute(file_name);
469:
470: if(do_append && file_exist(file_spec))
471: output_column_names=false;
1.188 paf 472:
473: TableSeparators separators;
1.281 misha 474: if(param_index<params.count())
475: if(HashStringValue* options=params.as_hash(param_index++,
476: "additional params must be hash",
477: "additional params must be hash (did you spell mode parameter correctly?)"
478: )) {
479: int valid_options=separators.load(*options);
480: if(valid_options!=options->count())
481: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 482: }
1.281 misha 483:
1.188 paf 484: if(param_index<params.count())
1.226 misha 485: throw Exception(PARSER_RUNTIME,
1.188 paf 486: 0,
487: "bad mode (must be nameless or append)");
1.22 paf 488:
1.182 paf 489: Table& table=GET_SELF(r, VTable).table();
1.31 paf 490:
1.257 misha 491: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 492:
1.269 misha 493: pa_stringstream ost(std::stringstream::out);
1.257 misha 494:
495: // process header
1.188 paf 496: if(output_column_names) {
1.31 paf 497: if(table.columns()) { // named table
1.182 paf 498: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 499: maybe_enclose( ost, *i.next(), separators.encloser );
500: if(i.has_next()){
501: ost<<separators.column;
502: }
1.31 paf 503: }
1.188 paf 504: } else { // nameless table [we were asked to output column names]
1.182 paf 505: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 506: for(int column=0; column<lsize; column++) {
1.257 misha 507: if(separators.encloser) {
508: ost<<separators.encloser<<column<<separators.encloser;
509: } else {
510: ost<<column;
511: }
512: if(column<lsize-1){
513: ost<<separators.column;
514: }
1.31 paf 515: }
516: else
1.257 misha 517: ost<<"empty nameless table";
1.31 paf 518: }
1.257 misha 519: ost<<'\n';
1.188 paf 520: }
1.129 paf 521:
1.257 misha 522: // process data lines
1.182 paf 523: Array_iterator<ArrayString*> i(table);
1.98 parser 524: while(i.has_next()) {
1.182 paf 525: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 526: maybe_enclose( ost, *c.next(), separators.encloser );
1.98 parser 527: if(c.has_next())
1.257 misha 528: ost<<separators.column;
1.31 paf 529: }
1.257 misha 530: ost<<'\n';
1.31 paf 531: }
532:
533: // write
1.217 paf 534: {
1.269 misha 535: pa_string data=ost.str();
1.257 misha 536: const char* data_cstr=data.c_str();
537:
1.267 misha 538: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.217 paf 539: }
1.22 paf 540:
1.241 misha 541: #else
1.240 misha 542:
1.257 misha 543: String sdata;
1.224 misha 544: if(output_column_names) {
545: if(table.columns()) { // named table
546: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 547: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
548: if(i.has_next())
549: sdata<<*separators.scolumn;
1.224 misha 550: }
551: } else { // nameless table [we were asked to output column names]
552: if(int lsize=table.count()?table[0]->count():0)
553: for(int column=0; column<lsize; column++) {
1.257 misha 554: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
555: sdata.append_know_length(cindex_tab,
556: snprintf(cindex_tab, MAX_NUMBER,
557: column<lsize-1?"%d%c":"%d", column, separators.column),
558: String::L_CLEAN);
1.224 misha 559: }
560: else
1.257 misha 561: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.224 misha 562: }
1.257 misha 563: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 564: }
565:
1.257 misha 566: // data lines
1.224 misha 567: Array_iterator<ArrayString*> i(table);
568: while(i.has_next()) {
569: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 570: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.224 misha 571: if(c.has_next())
1.257 misha 572: sdata<<*separators.scolumn;
1.224 misha 573: }
1.257 misha 574: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 575: }
576:
577: // write
578: {
1.257 misha 579: const char* data_cstr=sdata.cstr();
1.267 misha 580: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true, do_append);
1.257 misha 581: if(*data_cstr) // not empty (when empty it's not heap memory)
582: pa_free((void*)data_cstr); // not needed anymore
1.224 misha 583: }
1.240 misha 584:
1.257 misha 585: #endif // don't use stringstream
1.224 misha 586: }
587:
1.280 misha 588: static void _count(Request& r, MethodParams& params) {
589: Table& table=GET_SELF(r, VTable).table();
590: size_t result=0;
591: if(params.count()) {
592: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
593: if(param == "columns")
594: result = table.columns() ? table.columns()->count() : 0;
595: else if(param == "cells")
596: result = table.count() ? table[table.current()]->count() : 0;
597: else if(param == "rows") // synonim for ^table.count[]
598: result = table.count();
599: else
600: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
601: } else
602: result = table.count();
603:
1.182 paf 604: r.write_no_lang(*new VInt(result));
1.6 paf 605: }
606:
1.182 paf 607: static void _line(Request& r, MethodParams&) {
608: int result=1+GET_SELF(r, VTable).table().current();
609: r.write_no_lang(*new VInt(result));
1.6 paf 610: }
611:
1.182 paf 612: static void _offset(Request& r, MethodParams& params) {
613: Table& table=GET_SELF(r, VTable).table();
614: if(params.count()) {
1.133 paf 615: bool absolute=false;
1.182 paf 616: if(params.count()>1) {
617: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 618: if(whence=="cur")
1.134 paf 619: absolute=false;
1.133 paf 620: else if(whence=="set")
1.134 paf 621: absolute=true;
1.133 paf 622: else
1.226 misha 623: throw Exception(PARSER_RUNTIME,
1.134 paf 624: &whence,
625: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 626: }
1.133 paf 627:
1.211 paf 628: int offset=params.as_int(params.count()-1, "offset must be expression", r);
629: table.offset(absolute, offset);
1.151 paf 630: } else
1.182 paf 631: r.write_no_lang(*new VInt(table.current()));
1.6 paf 632: }
633:
1.182 paf 634: static void _menu(Request& r, MethodParams& params) {
1.263 misha 635: InCycle temp(r);
1.221 paf 636:
1.182 paf 637: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 638:
1.182 paf 639: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 640:
1.182 paf 641: Table& table=GET_SELF(r, VTable).table();
1.99 parser 642: int saved_current=table.current();
1.182 paf 643: int size=table.count();
1.7 paf 644:
1.251 misha 645: if(delim_maybe_code) { // delimiter set
1.250 misha 646: bool need_delim=false;
647: for(int row=0; row<size; row++) {
648: table.set_current(row);
649:
650: StringOrValue sv_processed=r.process(body_code);
651: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
652:
653: const String* s_processed=sv_processed.get_string();
1.251 misha 654: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 655: if(need_delim) // need delim & iteration produced string?
656: r.write_pass_lang(r.process(*delim_maybe_code));
657: else
658: need_delim=true;
659: }
660:
661: r.write_pass_lang(sv_processed);
1.242 misha 662:
1.250 misha 663: if(lskip==Request::SKIP_BREAK)
664: break;
665: }
666: } else {
667: for(int row=0; row<size; row++) {
668: table.set_current(row);
669:
670: r.process_write(body_code);
671: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
672:
673: if(lskip==Request::SKIP_BREAK)
674: break;
1.7 paf 675: }
676: }
1.99 parser 677: table.set_current(saved_current);
1.7 paf 678: }
679:
1.110 parser 680: #ifndef DOXYGEN
1.74 paf 681: struct Row_info {
1.166 paf 682: Request *r;
1.74 paf 683: Table *table;
1.182 paf 684: Value* key_code;
685: size_t key_field;
686: Array<int>* value_fields;
687: HashStringValue* hash;
1.174 paf 688: Table2hash_distint distinct;
1.182 paf 689: size_t row;
1.227 misha 690: Table2hash_value_type value_type;
1.74 paf 691: };
1.110 parser 692: #endif
1.182 paf 693: static void table_row_to_hash(Table::element_type row, Row_info *info) {
694: const String* key;
695: if(info->key_code) {
696: info->table->set_current(info->row++); // change context row
697: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 698: key=&sv_processed.as_string();
1.227 misha 699: } else {
1.182 paf 700: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 701: }
1.166 paf 702:
703: if(!key)
704: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 705:
1.243 misha 706: bool exist=false;
707: switch(info->value_type) {
708: case C_STRING: {
1.271 misha 709: size_t index=info->value_fields->get(0);
710: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 711: break;
1.227 misha 712: }
1.243 misha 713: case C_HASH: {
1.182 paf 714: VHash* vhash=new VHash;
715: HashStringValue& hash=vhash->hash();
716: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
717: size_t value_field=i.next();
718: if(value_field<row->count())
1.174 paf 719: hash.put(
1.182 paf 720: *info->table->columns()->get(value_field),
721: new VString(*row->get(value_field)));
1.174 paf 722: }
723:
1.227 misha 724: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 725: break;
1.174 paf 726: }
1.243 misha 727: case C_TABLE: {
728: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 729: Table* table;
1.227 misha 730: if(vtable) {
1.243 misha 731: if(info->distinct==D_ILLEGAL) {
732: exist=true;
733: break;
734: }
1.174 paf 735: table=vtable->get_table();
1.227 misha 736: } else {
1.174 paf 737: // no? creating table of same structure as source
1.179 paf 738: Table::Action_options table_options(0, 0);
1.182 paf 739: table=new Table(*info->table, table_options/*no rows, just structure*/);
740: info->hash->put(*key, new VTable(table));
1.174 paf 741: }
1.182 paf 742: *table+=row;
1.243 misha 743: break;
1.174 paf 744: }
1.74 paf 745: }
1.227 misha 746: if(exist && info->distinct==D_ILLEGAL)
747: throw Exception(PARSER_RUNTIME,
748: key,
749: "duplicate key");
1.74 paf 750: }
1.235 misha 751:
752: Table2hash_value_type get_value_type(Value& vvalue_type){
753: if(vvalue_type.is_string()) {
754: const String& svalue_type=*vvalue_type.get_string();
755: if(svalue_type == "table"){
756: return C_TABLE;
757: } else if (svalue_type == "string") {
758: return C_STRING;
759: } else if (svalue_type == "hash") {
760: return C_HASH;
761: } else {
762: throw Exception(PARSER_RUNTIME,
763: &svalue_type,
764: "must be 'hash', 'table' or 'string'");
765: }
766: } else {
767: throw Exception(PARSER_RUNTIME,
768: 0,
769: "'type' must be hash");
770: }
771: }
772:
1.182 paf 773: static void _hash(Request& r, MethodParams& params) {
774: Table& self_table=GET_SELF(r, VTable).table();
775: VHash& result=*new VHash;
1.238 misha 776: if(Table::columns_type columns=self_table.columns()){
1.182 paf 777: if(columns->count()>0) {
1.174 paf 778: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 779: Table2hash_value_type value_type=C_HASH;
1.182 paf 780: int param_index=params.count()-1;
1.166 paf 781: if(param_index>0) {
1.238 misha 782: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 783: --param_index;
784: int valid_options=0;
1.238 misha 785: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 786: valid_options++;
1.174 paf 787: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
788: if(vdistinct_value.is_string()) {
789: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 790: if(sdistinct=="tables") {
791: value_type=C_TABLE;
792: distinct=D_FIRST;
1.238 misha 793: } else {
1.226 misha 794: throw Exception(PARSER_RUNTIME,
1.174 paf 795: &sdistinct,
796: "must be 'tables' or true/false");
1.238 misha 797: }
798: } else {
1.174 paf 799: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 800: }
1.166 paf 801: }
1.238 misha 802: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
803: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 804: throw Exception(PARSER_RUNTIME,
805: 0,
1.238 misha 806: "you can't specify $.distinct[tables] and $.type[] together");
807:
808: valid_options++;
809: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
810: }
1.226 misha 811:
1.182 paf 812: if(valid_options!=options->count())
1.272 misha 813: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 814: }
815: }
1.238 misha 816:
817: if(param_index==2) // options was specified but not as hash
1.272 misha 818: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.163 paf 819:
1.182 paf 820: Array<int> value_fields;
1.238 misha 821: if(param_index==0){ // list of columns wasn't specified
822: if(value_type==C_STRING) // $.type[string]
823: throw Exception(PARSER_RUNTIME,
824: 0,
825: "you must specify one value field with option $.type[string]");
826:
827: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
828: value_fields+=i;
829:
830: } else { // list of columns was specified
1.227 misha 831: if(value_type==C_TABLE)
832: throw Exception(PARSER_RUNTIME,
1.174 paf 833: 0,
1.238 misha 834: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
835:
1.182 paf 836: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 837: if(value_fields_param.is_string()) { // one column as string was specified
838: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
839: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
840: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
841: const String& value_field_name =*i.next()->get(0);
842: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 843: }
844: } else
1.226 misha 845: throw Exception(PARSER_RUNTIME,
1.182 paf 846: 0,
1.226 misha 847: "value field(s) must be string or table");
1.239 misha 848: }
1.74 paf 849:
1.227 misha 850: if(value_type==C_STRING && value_fields.count()!=1)
851: throw Exception(PARSER_RUNTIME,
852: 0,
1.238 misha 853: "you can specify only one value field with option $.type[string]");
1.182 paf 854:
855: {
856: Value* key_param=¶ms[0];
1.193 paf 857: Row_info info={
858: &r,
859: &self_table,
860: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 861: /*key_field=*/0/*filled below*/,
1.193 paf 862: &value_fields,
863: &result.hash(),
864: distinct,
1.227 misha 865: /*row=*/0,
866: value_type
1.193 paf 867: };
1.195 paf 868: info.key_field=(info.key_code?-1
869: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 870:
871: int saved_current=self_table.current();
872: self_table.for_each(table_row_to_hash, &info);
873: self_table.set_current(saved_current);
1.207 paf 874:
875: result.extract_default();
1.182 paf 876: }
1.74 paf 877: }
1.238 misha 878: }
1.97 parser 879: r.write_no_lang(result);
1.74 paf 880: }
881:
1.110 parser 882: #ifndef DOXYGEN
1.78 paf 883: struct Table_seq_item {
1.182 paf 884: ArrayString* row;
1.34 paf 885: union {
1.182 paf 886: const char *c_str;
1.34 paf 887: double d;
888: } value;
1.32 paf 889: };
1.110 parser 890: #endif
1.34 paf 891: static int sort_cmp_string(const void *a, const void *b) {
892: return strcmp(
1.78 paf 893: static_cast<const Table_seq_item *>(a)->value.c_str,
894: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 895: );
896: }
897: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 898: double va=static_cast<const Table_seq_item *>(a)->value.d;
899: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 900: if(va<vb)
901: return -1;
902: else if(va>vb)
903: return +1;
904: else
905: return 0;
906: }
1.182 paf 907: static void _sort(Request& r, MethodParams& params) {
908: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 909:
1.182 paf 910: bool reverse=params.count()>1/*..[desc|asc|]*/?
911: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 912: false; // default=asc
1.32 paf 913:
1.182 paf 914: Table& old_table=GET_SELF(r, VTable).table();
915: Table& new_table=*new Table(old_table.columns());
1.34 paf 916:
1.182 paf 917: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 918: int i;
919:
920: // calculate key values
921: bool key_values_are_strings=true;
1.182 paf 922: int old_count=old_table.count();
923: for(i=0; i<old_count; i++) {
1.101 parser 924: old_table.set_current(i);
1.32 paf 925: // calculate key value
1.182 paf 926: seq[i].row=old_table[i];
927: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 928: if(i==0) // determining key values type by first one
929: key_values_are_strings=value.is_string();
930:
931: if(key_values_are_strings)
932: seq[i].value.c_str=value.as_string().cstr();
933: else
934: seq[i].value.d=value.as_double();
1.32 paf 935: }
1.265 misha 936:
937: // @todo: handle this elsewhere
938: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
939: for(i=0; i<old_count; i++)
940: if(*seq[i].value.c_str)
941: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
942: }
943:
1.266 misha 944: // sort keys
1.182 paf 945: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 946: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 947:
1.34 paf 948: // reorder table as they require in 'seq'
1.182 paf 949: for(i=0; i<old_count; i++)
950: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
951:
952: delete[] seq;
1.32 paf 953:
1.116 parser 954: // replace any previous table value
1.182 paf 955: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 956: }
957:
1.176 paf 958: #ifndef DOXYGEN
1.182 paf 959: struct Expression_is_true_info {
1.176 paf 960: Request* r;
961: Value* expression_code;
962: };
963: #endif
1.275 misha 964:
1.191 paf 965: static bool expression_is_true(Table&, Expression_is_true_info* info) {
966: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 967: }
1.275 misha 968:
969: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 970: Value& expression_code=params.as_junction(0, "must be expression");
1.275 misha 971: const size_t options_index=1;
972: Table::Action_options o=get_action_options(r, params, options_index, table);
973: check_option_param(o.defined, params, options_index, "locate by expression only has parameters: expression and, maybe, options");
1.145 paf 974:
1.182 paf 975: Expression_is_true_info info={&r, &expression_code};
976: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 977: }
1.275 misha 978:
979: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 980: const String& name=params.as_string(0, "column name must be string");
1.232 misha 981: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.275 misha 982: const size_t options_index=2;
983: Table::Action_options o=get_action_options(r, params, options_index, table);
984: check_option_param(o.defined, params, options_index, "locate by name has parameters: name, value and, maybe, options");
985:
1.182 paf 986: return table.locate(name, value, o);
987: }
1.275 misha 988:
1.182 paf 989: static void _locate(Request& r, MethodParams& params) {
990: Table& table=GET_SELF(r, VTable).table();
1.72 paf 991:
1.182 paf 992: bool result=params[0].get_junction()?
1.275 misha 993: _locate_expression(table, r, params) :
994: _locate_name_value(table, r, params);
1.249 misha 995: r.write_no_lang(VBool::get(result));
1.145 paf 996: }
1.182 paf 997:
998:
1.191 paf 999: static void _flip(Request& r, MethodParams&) {
1.182 paf 1000: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1001: Table& new_table=*new Table(0);
1.182 paf 1002: if(size_t old_count=old_table.count())
1.270 misha 1003: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 1004: for(size_t column=0; column<old_cols; column++) {
1005: Table::element_type new_row(new ArrayString(old_count));
1006: for(size_t i=0; i<old_count; i++) {
1007: Table::element_type old_row=old_table[i];
1008: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1009: }
1.182 paf 1010: new_table+=new_row;
1.39 paf 1011: }
1012:
1.182 paf 1013: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1014: }
1015:
1.182 paf 1016: static void _append(Request& r, MethodParams& params) {
1017: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1018: const String& string=r.process_to_string(params[0]);
1.41 paf 1019:
1020: // parse cells
1.182 paf 1021: Table::element_type row=new ArrayString;
1022: size_t pos_after=0;
1023: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1024:
1.182 paf 1025: GET_SELF(r, VTable).table()+=row;
1.41 paf 1026: }
1027:
1.182 paf 1028: static void join_named_row(Table& src, Table* dest) {
1029: Table::columns_type dest_columns=dest->columns();
1030: size_t dest_columns_count=dest_columns->count();
1031: Table::element_type dest_row(new ArrayString(dest_columns_count));
1032: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1033: const String* src_item=src.item(*dest_columns->get(dest_column));
1034: *dest_row+=src_item?src_item:new String;
1035: }
1036: *dest+=dest_row;
1037: }
1038: static void join_nameless_row(Table& src, Table* dest) {
1039: *dest+=src[src.current()];
1040: }
1041: static void _join(Request& r, MethodParams& params) {
1042: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1043: if(!maybe_src)
1.226 misha 1044: throw Exception(PARSER_RUNTIME,
1.182 paf 1045: 0,
1.42 paf 1046: "source is not a table");
1.176 paf 1047: Table& src=*maybe_src;
1048:
1.268 misha 1049: Table::Action_options o=get_action_options(r, params, 1, src);
1.182 paf 1050: check_option_param(o.defined, params, 1,
1.176 paf 1051: "invalid extra parameter");
1.42 paf 1052:
1.182 paf 1053: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1054: if(&src == &dest)
1.226 misha 1055: throw Exception(PARSER_RUNTIME,
1.182 paf 1056: 0,
1.42 paf 1057: "source and destination are same table");
1058:
1.193 paf 1059: if(dest.columns()) // dest is named
1.182 paf 1060: src.table_for_each(join_named_row, &dest, o);
1061: else // dest is nameless
1062: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1063: }
1064:
1.94 parser 1065: #ifndef DOXYGEN
1.169 paf 1066: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1067: ArrayString& columns;
1.218 paf 1068: int columns_count;
1.182 paf 1069: ArrayString* row;
1.94 parser 1070: public:
1.182 paf 1071: Table* table;
1072: public:
1073: Table_sql_event_handlers() :
1074: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1075: }
1076:
1.279 misha 1077: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1078: try {
1.274 moko 1079: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1080: return false;
1081: } catch(...) {
1082: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1083: return true;
1084: }
1085: }
1086: bool before_rows(SQL_Error& error) {
1087: try {
1.182 paf 1088: table=new Table(&columns);
1.218 paf 1089: columns_count=columns.count();
1.170 paf 1090: return false;
1091: } catch(...) {
1092: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1093: return true;
1094: }
1095: }
1096: bool add_row(SQL_Error& error) {
1097: try {
1.218 paf 1098: *table+=row=new ArrayString(columns_count);
1.170 paf 1099: return false;
1100: } catch(...) {
1101: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1102: return true;
1103: }
1104: }
1.279 misha 1105: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1106: try {
1.274 moko 1107: *row+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1108: return false;
1109: } catch(...) {
1110: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1111: return true;
1112: }
1.94 parser 1113: }
1114: };
1115: #endif
1.204 paf 1116:
1117: static void marshal_bind(
1118: HashStringValue::key_type aname,
1119: HashStringValue::value_type avalue,
1120: SQL_Driver::Placeholder** pptr)
1121: {
1122: SQL_Driver::Placeholder& ph=**pptr;
1123: ph.name=aname.cstr();
1.261 misha 1124: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1125: ph.is_null=avalue->get_class()==void_class;
1126: ph.were_updated=false;
1127:
1128: (*pptr)++;
1129: }
1130:
1131: // not static, used elsewhere
1132: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1133: int hash_count=hash.count();
1134: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1135: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1136: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1137: return hash_count;
1138: }
1139:
1140: // not static, used elsewhere
1141: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1142: SQL_Driver::Placeholder* ph=placeholders;
1143: for(int i=0; i<placeholder_count; i++, ph++)
1144: if(ph->were_updated) {
1145: Value* value;
1146: if(ph->is_null)
1.248 misha 1147: value=VVoid::get();
1.204 paf 1148: else
1.256 misha 1149: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1150: hash.put(ph->name, value);
1151: }
1152: }
1153:
1.182 paf 1154: static void _sql(Request& r, MethodParams& params) {
1155: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1156:
1.204 paf 1157: HashStringValue* bind=0;
1.244 misha 1158: ulong limit=SQL_NO_LIMIT;
1.100 parser 1159: ulong offset=0;
1.281 misha 1160: if(params.count()>1)
1161: if(HashStringValue* options=params.as_hash(1)) {
1162: int valid_options=0;
1163: if(Value* vbind=options->get(sql_bind_name)) {
1164: valid_options++;
1165: bind=vbind->get_hash();
1166: }
1167: if(Value* vlimit=options->get(sql_limit_name)) {
1168: valid_options++;
1169: limit=(ulong)r.process_to_value(*vlimit).as_double();
1170: }
1171: if(Value* voffset=options->get(sql_offset_name)) {
1172: valid_options++;
1173: offset=(ulong)r.process_to_value(*voffset).as_double();
1174: }
1175: if(valid_options!=options->count())
1176: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1177: }
1.49 paf 1178:
1.204 paf 1179: SQL_Driver::Placeholder* placeholders=0;
1180: uint placeholders_count=0;
1181: if(bind)
1182: placeholders_count=marshal_binds(*bind, placeholders);
1183:
1.182 paf 1184: Temp_lang temp_lang(r, String::L_SQL);
1185: const String& statement_string=r.process_to_string(statement);
1.262 misha 1186: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1187:
1.182 paf 1188: Table_sql_event_handlers handlers;
1.135 paf 1189: #ifdef RESOURCES_DEBUG
1190: struct timeval mt[2];
1191: //measure:before
1192: gettimeofday(&mt[0],NULL);
1193: #endif
1.182 paf 1194: r.connection()->query(
1.203 paf 1195: statement_cstr,
1.208 paf 1196: placeholders_count, placeholders,
1.203 paf 1197: offset, limit,
1.160 paf 1198: handlers,
1199: statement_string);
1.135 paf 1200:
1201: #ifdef RESOURCES_DEBUG
1202: //measure:after connect
1203: gettimeofday(&mt[1],NULL);
1204:
1205: double t[2];
1206: for(int i=0;i<2;i++)
1207: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1208:
1209: r.sql_request_time+=t[1]-t[0];
1210: #endif
1.204 paf 1211:
1212: if(bind)
1213: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1214:
1.182 paf 1215: Table& result=
1216: handlers.table?*handlers.table: // query resulted in table? return it
1217: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1218:
1219: // replace any previous table value
1.182 paf 1220: GET_SELF(r, VTable).set_table(result);
1.49 paf 1221: }
1222:
1.233 misha 1223: static void _columns(Request& r, MethodParams& params) {
1224: const String* column_column_name;
1225: if(params.count()>0)
1226: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1227: else
1228: column_column_name=new String("column");
1.88 parser 1229:
1.182 paf 1230: Table::columns_type result_columns(new ArrayString);
1.233 misha 1231: *result_columns+=column_column_name;
1.182 paf 1232: Table& result_table=*new Table(result_columns);
1.88 parser 1233:
1.182 paf 1234: Table& source_table=GET_SELF(r, VTable).table();
1235: if(Table::columns_type source_columns=source_table.columns()) {
1236: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1237: Table::element_type result_row(new ArrayString);
1238: *result_row+=i.next();
1239: result_table+=result_row;
1.88 parser 1240: }
1241: }
1242:
1.182 paf 1243: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1244: }
1245:
1.182 paf 1246: static void _select(Request& r, MethodParams& params) {
1.231 misha 1247: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1248:
1.182 paf 1249: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1250:
1.277 moko 1251: int limit=source_table.count();
1.282 misha 1252: int offset=0;
1253: bool reverse=false;
1.278 moko 1254:
1.281 misha 1255: if(params.count()>1)
1256: if(HashStringValue* options=params.as_hash(1)) {
1257: int valid_options=0;
1258: if(Value* vlimit=options->get(sql_limit_name)) {
1259: valid_options++;
1260: limit=r.process_to_value(*vlimit).as_int();
1261: }
1262: if(Value* voffset=options->get(sql_offset_name)) {
1263: valid_options++;
1264: offset=r.process_to_value(*voffset).as_int();
1265: }
1266: if(Value* vreverse=options->get(table_reverse_name)) {
1267: valid_options++;
1268: reverse=r.process_to_value(*vreverse).as_bool();
1269: }
1270: if(valid_options!=options->count())
1.277 moko 1271: throw Exception(PARSER_RUNTIME,
1272: 0,
1.281 misha 1273: "called with invalid option");
1274: }
1275:
1276: Table& result_table=*new Table(source_table.columns());
1.277 moko 1277:
1.283 misha 1278: size_t size=source_table.count();
1279: if(offset<0)
1280: offset+=size;
1.284 ! misha 1281: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1282: size_t saved_current=source_table.current();
1283: size_t appended=0;
1284:
1285: if(reverse){
1286: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1287: source_table.set_current(row);
1288:
1289: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1290:
1291: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1292: result_table+=source_table[row];
1293: if(row==0) break;
1294: }
1295: } else {
1296: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1297: source_table.set_current(row);
1.148 paf 1298:
1.282 misha 1299: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1300:
1.282 misha 1301: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1302: result_table+=source_table[row];
1303: }
1.277 moko 1304: }
1.282 misha 1305: source_table.set_current(saved_current);
1.148 paf 1306: }
1307:
1.182 paf 1308: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1309: }
1310:
1.66 paf 1311: // constructor
1312:
1.182 paf 1313: MTable::MTable(): Methoded("table") {
1.142 paf 1314: // ^table::create{data}
1315: // ^table::create[nameless]{data}
1316: // ^table::create[table]
1.236 misha 1317: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1318: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1319: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1320:
1.142 paf 1321: // ^table::load[file]
1322: // ^table::load[nameless;file]
1.168 paf 1323: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1324:
1325: // ^table.save[file]
1326: // ^table.save[nameless;file]
1.188 paf 1327: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1328:
1.224 misha 1329: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1330:
1.6 paf 1331: // ^table.count[]
1.280 misha 1332: // ^table.count[rows]
1333: // ^table.count[columns]
1334: // ^table.count[cells]
1335: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1336:
1337: // ^table.line[]
1.66 paf 1338: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1339:
1.10 paf 1340: // ^table.offset[]
1.133 paf 1341: // ^table.offset(offset)
1342: // ^table.offset[cur|set](offset)
1343: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1344:
1.10 paf 1345: // ^table.menu{code}
1346: // ^table.menu{code}[delim]
1.66 paf 1347: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1348:
1.239 misha 1349: // ^table.hash[key field name]
1350: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1351: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1352:
1.102 parser 1353: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1354: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1355: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1356:
1.36 paf 1357: // ^table.locate[field;value]
1.176 paf 1358: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1359:
1360: // ^table.flip[]
1.66 paf 1361: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1362:
1363: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1364: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1365:
1.157 paf 1366: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1367: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1368:
1369:
1.239 misha 1370: // ^table::sql[query]
1371: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1372: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1373:
1.239 misha 1374: // ^table.columns[[column name]]
1.233 misha 1375: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1376:
1377: // ^table.select(expression) = table
1.277 moko 1378: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1379: }
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