Annotation of parser3/src/classes/table.C, revision 1.280
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:
1.280 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2010-11-26 06:40:01 $";
1.229 misha 9:
1.257 misha 10: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 11: #include <sstream>
1.240 misha 12: #endif
1.1 paf 13:
1.105 parser 14: #include "classes.h"
1.182 paf 15: #include "pa_vmethod_frame.h"
16:
1.16 paf 17: #include "pa_common.h"
1.1 paf 18: #include "pa_request.h"
1.265 misha 19: #include "pa_charsets.h"
1.1 paf 20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.277 moko 24: #include "pa_array.h"
1.1 paf 25:
1.66 paf 26: // class
27:
1.182 paf 28: class MTable: public Methoded {
1.66 paf 29: public: // VStateless_class
1.264 misha 30: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 31: public:
1.182 paf 32: MTable();
1.66 paf 33: };
1.1 paf 34:
1.182 paf 35: // global variable
36:
37: DECLARE_CLASS_VAR(table, new MTable, 0);
38:
39: #define TABLE_REVERSE_NAME "reverse"
40:
41: // globals
42:
1.203 paf 43: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 44: String sql_limit_name(PA_SQL_LIMIT_NAME);
45: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 46: String sql_default_name(SQL_DEFAULT_NAME);
47: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 48: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 49: String table_reverse_name(TABLE_REVERSE_NAME);
50:
1.1 paf 51: // methods
1.66 paf 52:
1.182 paf 53: static Table::Action_options get_action_options(Request& r, MethodParams& params,
1.268 misha 54: size_t options_index, const Table& source) {
1.176 paf 55: Table::Action_options result;
1.268 misha 56: if(params.count() <= options_index)
1.182 paf 57: return result;
58:
1.268 misha 59: Value& maybe_options=params[options_index];
1.182 paf 60: /* can not do it:
61: want to enable ^table::create[$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;
474: if(param_index<params.count()) {
1.222 paf 475: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
476: if( voptions.is_defined() && !voptions.is_string() ) {
477: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 478: int valid_options=separators.load(*options);
479: if(valid_options!=options->count())
1.272 misha 480: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.223 paf 481: } else {
1.226 misha 482: throw Exception(PARSER_RUNTIME,
1.188 paf 483: 0,
1.223 paf 484: "additional params must be hash (did you spell mode parameter correctly?)");
485: }
1.222 paf 486: }
1.188 paf 487: }
488: if(param_index<params.count())
1.226 misha 489: throw Exception(PARSER_RUNTIME,
1.188 paf 490: 0,
491: "bad mode (must be nameless or append)");
1.22 paf 492:
1.182 paf 493: Table& table=GET_SELF(r, VTable).table();
1.31 paf 494:
1.257 misha 495: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 496:
1.269 misha 497: pa_stringstream ost(std::stringstream::out);
1.257 misha 498:
499: // process header
1.188 paf 500: if(output_column_names) {
1.31 paf 501: if(table.columns()) { // named table
1.182 paf 502: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 503: maybe_enclose( ost, *i.next(), separators.encloser );
504: if(i.has_next()){
505: ost<<separators.column;
506: }
1.31 paf 507: }
1.188 paf 508: } else { // nameless table [we were asked to output column names]
1.182 paf 509: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 510: for(int column=0; column<lsize; column++) {
1.257 misha 511: if(separators.encloser) {
512: ost<<separators.encloser<<column<<separators.encloser;
513: } else {
514: ost<<column;
515: }
516: if(column<lsize-1){
517: ost<<separators.column;
518: }
1.31 paf 519: }
520: else
1.257 misha 521: ost<<"empty nameless table";
1.31 paf 522: }
1.257 misha 523: ost<<'\n';
1.188 paf 524: }
1.129 paf 525:
1.257 misha 526: // process data lines
1.182 paf 527: Array_iterator<ArrayString*> i(table);
1.98 parser 528: while(i.has_next()) {
1.182 paf 529: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 530: maybe_enclose( ost, *c.next(), separators.encloser );
1.98 parser 531: if(c.has_next())
1.257 misha 532: ost<<separators.column;
1.31 paf 533: }
1.257 misha 534: ost<<'\n';
1.31 paf 535: }
536:
537: // write
1.217 paf 538: {
1.269 misha 539: pa_string data=ost.str();
1.257 misha 540: const char* data_cstr=data.c_str();
541:
1.267 misha 542: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.217 paf 543: }
1.22 paf 544:
1.241 misha 545: #else
1.240 misha 546:
1.257 misha 547: String sdata;
1.224 misha 548: if(output_column_names) {
549: if(table.columns()) { // named table
550: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 551: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
552: if(i.has_next())
553: sdata<<*separators.scolumn;
1.224 misha 554: }
555: } else { // nameless table [we were asked to output column names]
556: if(int lsize=table.count()?table[0]->count():0)
557: for(int column=0; column<lsize; column++) {
1.257 misha 558: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
559: sdata.append_know_length(cindex_tab,
560: snprintf(cindex_tab, MAX_NUMBER,
561: column<lsize-1?"%d%c":"%d", column, separators.column),
562: String::L_CLEAN);
1.224 misha 563: }
564: else
1.257 misha 565: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.224 misha 566: }
1.257 misha 567: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 568: }
569:
1.257 misha 570: // data lines
1.224 misha 571: Array_iterator<ArrayString*> i(table);
572: while(i.has_next()) {
573: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 574: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.224 misha 575: if(c.has_next())
1.257 misha 576: sdata<<*separators.scolumn;
1.224 misha 577: }
1.257 misha 578: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 579: }
580:
581: // write
582: {
1.257 misha 583: const char* data_cstr=sdata.cstr();
1.267 misha 584: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true, do_append);
1.257 misha 585: if(*data_cstr) // not empty (when empty it's not heap memory)
586: pa_free((void*)data_cstr); // not needed anymore
1.224 misha 587: }
1.240 misha 588:
1.257 misha 589: #endif // don't use stringstream
1.224 misha 590: }
591:
1.280 ! misha 592: static void _count(Request& r, MethodParams& params) {
! 593: Table& table=GET_SELF(r, VTable).table();
! 594: size_t result=0;
! 595: if(params.count()) {
! 596: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
! 597: if(param == "columns")
! 598: result = table.columns() ? table.columns()->count() : 0;
! 599: else if(param == "cells")
! 600: result = table.count() ? table[table.current()]->count() : 0;
! 601: else if(param == "rows") // synonim for ^table.count[]
! 602: result = table.count();
! 603: else
! 604: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
! 605: } else
! 606: result = table.count();
! 607:
1.182 paf 608: r.write_no_lang(*new VInt(result));
1.6 paf 609: }
610:
1.182 paf 611: static void _line(Request& r, MethodParams&) {
612: int result=1+GET_SELF(r, VTable).table().current();
613: r.write_no_lang(*new VInt(result));
1.6 paf 614: }
615:
1.182 paf 616: static void _offset(Request& r, MethodParams& params) {
617: Table& table=GET_SELF(r, VTable).table();
618: if(params.count()) {
1.133 paf 619: bool absolute=false;
1.182 paf 620: if(params.count()>1) {
621: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 622: if(whence=="cur")
1.134 paf 623: absolute=false;
1.133 paf 624: else if(whence=="set")
1.134 paf 625: absolute=true;
1.133 paf 626: else
1.226 misha 627: throw Exception(PARSER_RUNTIME,
1.134 paf 628: &whence,
629: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 630: }
1.133 paf 631:
1.211 paf 632: int offset=params.as_int(params.count()-1, "offset must be expression", r);
633: table.offset(absolute, offset);
1.151 paf 634: } else
1.182 paf 635: r.write_no_lang(*new VInt(table.current()));
1.6 paf 636: }
637:
1.182 paf 638: static void _menu(Request& r, MethodParams& params) {
1.263 misha 639: InCycle temp(r);
1.221 paf 640:
1.182 paf 641: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 642:
1.182 paf 643: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 644:
1.182 paf 645: Table& table=GET_SELF(r, VTable).table();
1.99 parser 646: int saved_current=table.current();
1.182 paf 647: int size=table.count();
1.7 paf 648:
1.251 misha 649: if(delim_maybe_code) { // delimiter set
1.250 misha 650: bool need_delim=false;
651: for(int row=0; row<size; row++) {
652: table.set_current(row);
653:
654: StringOrValue sv_processed=r.process(body_code);
655: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
656:
657: const String* s_processed=sv_processed.get_string();
1.251 misha 658: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 659: if(need_delim) // need delim & iteration produced string?
660: r.write_pass_lang(r.process(*delim_maybe_code));
661: else
662: need_delim=true;
663: }
664:
665: r.write_pass_lang(sv_processed);
1.242 misha 666:
1.250 misha 667: if(lskip==Request::SKIP_BREAK)
668: break;
669: }
670: } else {
671: for(int row=0; row<size; row++) {
672: table.set_current(row);
673:
674: r.process_write(body_code);
675: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
676:
677: if(lskip==Request::SKIP_BREAK)
678: break;
1.7 paf 679: }
680: }
1.99 parser 681: table.set_current(saved_current);
1.7 paf 682: }
683:
1.110 parser 684: #ifndef DOXYGEN
1.74 paf 685: struct Row_info {
1.166 paf 686: Request *r;
1.74 paf 687: Table *table;
1.182 paf 688: Value* key_code;
689: size_t key_field;
690: Array<int>* value_fields;
691: HashStringValue* hash;
1.174 paf 692: Table2hash_distint distinct;
1.182 paf 693: size_t row;
1.227 misha 694: Table2hash_value_type value_type;
1.74 paf 695: };
1.110 parser 696: #endif
1.182 paf 697: static void table_row_to_hash(Table::element_type row, Row_info *info) {
698: const String* key;
699: if(info->key_code) {
700: info->table->set_current(info->row++); // change context row
701: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 702: key=&sv_processed.as_string();
1.227 misha 703: } else {
1.182 paf 704: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 705: }
1.166 paf 706:
707: if(!key)
708: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 709:
1.243 misha 710: bool exist=false;
711: switch(info->value_type) {
712: case C_STRING: {
1.271 misha 713: size_t index=info->value_fields->get(0);
714: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 715: break;
1.227 misha 716: }
1.243 misha 717: case C_HASH: {
1.182 paf 718: VHash* vhash=new VHash;
719: HashStringValue& hash=vhash->hash();
720: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
721: size_t value_field=i.next();
722: if(value_field<row->count())
1.174 paf 723: hash.put(
1.182 paf 724: *info->table->columns()->get(value_field),
725: new VString(*row->get(value_field)));
1.174 paf 726: }
727:
1.227 misha 728: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 729: break;
1.174 paf 730: }
1.243 misha 731: case C_TABLE: {
732: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 733: Table* table;
1.227 misha 734: if(vtable) {
1.243 misha 735: if(info->distinct==D_ILLEGAL) {
736: exist=true;
737: break;
738: }
1.174 paf 739: table=vtable->get_table();
1.227 misha 740: } else {
1.174 paf 741: // no? creating table of same structure as source
1.179 paf 742: Table::Action_options table_options(0, 0);
1.182 paf 743: table=new Table(*info->table, table_options/*no rows, just structure*/);
744: info->hash->put(*key, new VTable(table));
1.174 paf 745: }
1.182 paf 746: *table+=row;
1.243 misha 747: break;
1.174 paf 748: }
1.74 paf 749: }
1.227 misha 750: if(exist && info->distinct==D_ILLEGAL)
751: throw Exception(PARSER_RUNTIME,
752: key,
753: "duplicate key");
1.74 paf 754: }
1.235 misha 755:
756: Table2hash_value_type get_value_type(Value& vvalue_type){
757: if(vvalue_type.is_string()) {
758: const String& svalue_type=*vvalue_type.get_string();
759: if(svalue_type == "table"){
760: return C_TABLE;
761: } else if (svalue_type == "string") {
762: return C_STRING;
763: } else if (svalue_type == "hash") {
764: return C_HASH;
765: } else {
766: throw Exception(PARSER_RUNTIME,
767: &svalue_type,
768: "must be 'hash', 'table' or 'string'");
769: }
770: } else {
771: throw Exception(PARSER_RUNTIME,
772: 0,
773: "'type' must be hash");
774: }
775: }
776:
1.182 paf 777: static void _hash(Request& r, MethodParams& params) {
778: Table& self_table=GET_SELF(r, VTable).table();
779: VHash& result=*new VHash;
1.238 misha 780: if(Table::columns_type columns=self_table.columns()){
1.182 paf 781: if(columns->count()>0) {
1.174 paf 782: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 783: Table2hash_value_type value_type=C_HASH;
1.182 paf 784: int param_index=params.count()-1;
1.166 paf 785: if(param_index>0) {
1.238 misha 786: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 787: --param_index;
788: int valid_options=0;
1.238 misha 789: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 790: valid_options++;
1.174 paf 791: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
792: if(vdistinct_value.is_string()) {
793: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 794: if(sdistinct=="tables") {
795: value_type=C_TABLE;
796: distinct=D_FIRST;
1.238 misha 797: } else {
1.226 misha 798: throw Exception(PARSER_RUNTIME,
1.174 paf 799: &sdistinct,
800: "must be 'tables' or true/false");
1.238 misha 801: }
802: } else {
1.174 paf 803: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 804: }
1.166 paf 805: }
1.238 misha 806: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
807: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 808: throw Exception(PARSER_RUNTIME,
809: 0,
1.238 misha 810: "you can't specify $.distinct[tables] and $.type[] together");
811:
812: valid_options++;
813: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
814: }
1.226 misha 815:
1.182 paf 816: if(valid_options!=options->count())
1.272 misha 817: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 818: }
819: }
1.238 misha 820:
821: if(param_index==2) // options was specified but not as hash
1.272 misha 822: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.163 paf 823:
1.182 paf 824: Array<int> value_fields;
1.238 misha 825: if(param_index==0){ // list of columns wasn't specified
826: if(value_type==C_STRING) // $.type[string]
827: throw Exception(PARSER_RUNTIME,
828: 0,
829: "you must specify one value field with option $.type[string]");
830:
831: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
832: value_fields+=i;
833:
834: } else { // list of columns was specified
1.227 misha 835: if(value_type==C_TABLE)
836: throw Exception(PARSER_RUNTIME,
1.174 paf 837: 0,
1.238 misha 838: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
839:
1.182 paf 840: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 841: if(value_fields_param.is_string()) { // one column as string was specified
842: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
843: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
844: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
845: const String& value_field_name =*i.next()->get(0);
846: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 847: }
848: } else
1.226 misha 849: throw Exception(PARSER_RUNTIME,
1.182 paf 850: 0,
1.226 misha 851: "value field(s) must be string or table");
1.239 misha 852: }
1.74 paf 853:
1.227 misha 854: if(value_type==C_STRING && value_fields.count()!=1)
855: throw Exception(PARSER_RUNTIME,
856: 0,
1.238 misha 857: "you can specify only one value field with option $.type[string]");
1.182 paf 858:
859: {
860: Value* key_param=¶ms[0];
1.193 paf 861: Row_info info={
862: &r,
863: &self_table,
864: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 865: /*key_field=*/0/*filled below*/,
1.193 paf 866: &value_fields,
867: &result.hash(),
868: distinct,
1.227 misha 869: /*row=*/0,
870: value_type
1.193 paf 871: };
1.195 paf 872: info.key_field=(info.key_code?-1
873: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 874:
875: int saved_current=self_table.current();
876: self_table.for_each(table_row_to_hash, &info);
877: self_table.set_current(saved_current);
1.207 paf 878:
879: result.extract_default();
1.182 paf 880: }
1.74 paf 881: }
1.238 misha 882: }
1.97 parser 883: r.write_no_lang(result);
1.74 paf 884: }
885:
1.110 parser 886: #ifndef DOXYGEN
1.78 paf 887: struct Table_seq_item {
1.182 paf 888: ArrayString* row;
1.34 paf 889: union {
1.182 paf 890: const char *c_str;
1.34 paf 891: double d;
892: } value;
1.32 paf 893: };
1.110 parser 894: #endif
1.34 paf 895: static int sort_cmp_string(const void *a, const void *b) {
896: return strcmp(
1.78 paf 897: static_cast<const Table_seq_item *>(a)->value.c_str,
898: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 899: );
900: }
901: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 902: double va=static_cast<const Table_seq_item *>(a)->value.d;
903: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 904: if(va<vb)
905: return -1;
906: else if(va>vb)
907: return +1;
908: else
909: return 0;
910: }
1.182 paf 911: static void _sort(Request& r, MethodParams& params) {
912: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 913:
1.182 paf 914: bool reverse=params.count()>1/*..[desc|asc|]*/?
915: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 916: false; // default=asc
1.32 paf 917:
1.182 paf 918: Table& old_table=GET_SELF(r, VTable).table();
919: Table& new_table=*new Table(old_table.columns());
1.34 paf 920:
1.182 paf 921: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 922: int i;
923:
924: // calculate key values
925: bool key_values_are_strings=true;
1.182 paf 926: int old_count=old_table.count();
927: for(i=0; i<old_count; i++) {
1.101 parser 928: old_table.set_current(i);
1.32 paf 929: // calculate key value
1.182 paf 930: seq[i].row=old_table[i];
931: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 932: if(i==0) // determining key values type by first one
933: key_values_are_strings=value.is_string();
934:
935: if(key_values_are_strings)
936: seq[i].value.c_str=value.as_string().cstr();
937: else
938: seq[i].value.d=value.as_double();
1.32 paf 939: }
1.265 misha 940:
941: // @todo: handle this elsewhere
942: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
943: for(i=0; i<old_count; i++)
944: if(*seq[i].value.c_str)
945: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
946: }
947:
1.266 misha 948: // sort keys
1.182 paf 949: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 950: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 951:
1.34 paf 952: // reorder table as they require in 'seq'
1.182 paf 953: for(i=0; i<old_count; i++)
954: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
955:
956: delete[] seq;
1.32 paf 957:
1.116 parser 958: // replace any previous table value
1.182 paf 959: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 960: }
961:
1.176 paf 962: #ifndef DOXYGEN
1.182 paf 963: struct Expression_is_true_info {
1.176 paf 964: Request* r;
965: Value* expression_code;
966: };
967: #endif
1.275 misha 968:
1.191 paf 969: static bool expression_is_true(Table&, Expression_is_true_info* info) {
970: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 971: }
1.275 misha 972:
973: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 974: Value& expression_code=params.as_junction(0, "must be expression");
1.275 misha 975: const size_t options_index=1;
976: Table::Action_options o=get_action_options(r, params, options_index, table);
977: check_option_param(o.defined, params, options_index, "locate by expression only has parameters: expression and, maybe, options");
1.145 paf 978:
1.182 paf 979: Expression_is_true_info info={&r, &expression_code};
980: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 981: }
1.275 misha 982:
983: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 984: const String& name=params.as_string(0, "column name must be string");
1.232 misha 985: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.275 misha 986: const size_t options_index=2;
987: Table::Action_options o=get_action_options(r, params, options_index, table);
988: check_option_param(o.defined, params, options_index, "locate by name has parameters: name, value and, maybe, options");
989:
1.182 paf 990: return table.locate(name, value, o);
991: }
1.275 misha 992:
1.182 paf 993: static void _locate(Request& r, MethodParams& params) {
994: Table& table=GET_SELF(r, VTable).table();
1.72 paf 995:
1.182 paf 996: bool result=params[0].get_junction()?
1.275 misha 997: _locate_expression(table, r, params) :
998: _locate_name_value(table, r, params);
1.249 misha 999: r.write_no_lang(VBool::get(result));
1.145 paf 1000: }
1.182 paf 1001:
1002:
1.191 paf 1003: static void _flip(Request& r, MethodParams&) {
1.182 paf 1004: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1005: Table& new_table=*new Table(0);
1.182 paf 1006: if(size_t old_count=old_table.count())
1.270 misha 1007: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 1008: for(size_t column=0; column<old_cols; column++) {
1009: Table::element_type new_row(new ArrayString(old_count));
1010: for(size_t i=0; i<old_count; i++) {
1011: Table::element_type old_row=old_table[i];
1012: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1013: }
1.182 paf 1014: new_table+=new_row;
1.39 paf 1015: }
1016:
1.182 paf 1017: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1018: }
1019:
1.182 paf 1020: static void _append(Request& r, MethodParams& params) {
1021: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1022: const String& string=r.process_to_string(params[0]);
1.41 paf 1023:
1024: // parse cells
1.182 paf 1025: Table::element_type row=new ArrayString;
1026: size_t pos_after=0;
1027: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1028:
1.182 paf 1029: GET_SELF(r, VTable).table()+=row;
1.41 paf 1030: }
1031:
1.182 paf 1032: static void join_named_row(Table& src, Table* dest) {
1033: Table::columns_type dest_columns=dest->columns();
1034: size_t dest_columns_count=dest_columns->count();
1035: Table::element_type dest_row(new ArrayString(dest_columns_count));
1036: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1037: const String* src_item=src.item(*dest_columns->get(dest_column));
1038: *dest_row+=src_item?src_item:new String;
1039: }
1040: *dest+=dest_row;
1041: }
1042: static void join_nameless_row(Table& src, Table* dest) {
1043: *dest+=src[src.current()];
1044: }
1045: static void _join(Request& r, MethodParams& params) {
1046: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1047: if(!maybe_src)
1.226 misha 1048: throw Exception(PARSER_RUNTIME,
1.182 paf 1049: 0,
1.42 paf 1050: "source is not a table");
1.176 paf 1051: Table& src=*maybe_src;
1052:
1.268 misha 1053: Table::Action_options o=get_action_options(r, params, 1, src);
1.182 paf 1054: check_option_param(o.defined, params, 1,
1.176 paf 1055: "invalid extra parameter");
1.42 paf 1056:
1.182 paf 1057: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1058: if(&src == &dest)
1.226 misha 1059: throw Exception(PARSER_RUNTIME,
1.182 paf 1060: 0,
1.42 paf 1061: "source and destination are same table");
1062:
1.193 paf 1063: if(dest.columns()) // dest is named
1.182 paf 1064: src.table_for_each(join_named_row, &dest, o);
1065: else // dest is nameless
1066: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1067: }
1068:
1.94 parser 1069: #ifndef DOXYGEN
1.169 paf 1070: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1071: ArrayString& columns;
1.218 paf 1072: int columns_count;
1.182 paf 1073: ArrayString* row;
1.94 parser 1074: public:
1.182 paf 1075: Table* table;
1076: public:
1077: Table_sql_event_handlers() :
1078: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1079: }
1080:
1.279 misha 1081: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1082: try {
1.274 moko 1083: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1084: return false;
1085: } catch(...) {
1086: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1087: return true;
1088: }
1089: }
1090: bool before_rows(SQL_Error& error) {
1091: try {
1.182 paf 1092: table=new Table(&columns);
1.218 paf 1093: columns_count=columns.count();
1.170 paf 1094: return false;
1095: } catch(...) {
1096: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1097: return true;
1098: }
1099: }
1100: bool add_row(SQL_Error& error) {
1101: try {
1.218 paf 1102: *table+=row=new ArrayString(columns_count);
1.170 paf 1103: return false;
1104: } catch(...) {
1105: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1106: return true;
1107: }
1108: }
1.279 misha 1109: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1110: try {
1.274 moko 1111: *row+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1112: return false;
1113: } catch(...) {
1114: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1115: return true;
1116: }
1.94 parser 1117: }
1118: };
1119: #endif
1.204 paf 1120:
1121: static void marshal_bind(
1122: HashStringValue::key_type aname,
1123: HashStringValue::value_type avalue,
1124: SQL_Driver::Placeholder** pptr)
1125: {
1126: SQL_Driver::Placeholder& ph=**pptr;
1127: ph.name=aname.cstr();
1.261 misha 1128: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1129: ph.is_null=avalue->get_class()==void_class;
1130: ph.were_updated=false;
1131:
1132: (*pptr)++;
1133: }
1134:
1135: // not static, used elsewhere
1136: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1137: int hash_count=hash.count();
1138: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1139: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1140: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1141: return hash_count;
1142: }
1143:
1144: // not static, used elsewhere
1145: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1146: SQL_Driver::Placeholder* ph=placeholders;
1147: for(int i=0; i<placeholder_count; i++, ph++)
1148: if(ph->were_updated) {
1149: Value* value;
1150: if(ph->is_null)
1.248 misha 1151: value=VVoid::get();
1.204 paf 1152: else
1.256 misha 1153: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1154: hash.put(ph->name, value);
1155: }
1156: }
1157:
1.182 paf 1158: static void _sql(Request& r, MethodParams& params) {
1159: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1160:
1.204 paf 1161: HashStringValue* bind=0;
1.244 misha 1162: ulong limit=SQL_NO_LIMIT;
1.100 parser 1163: ulong offset=0;
1.182 paf 1164: if(params.count()>1) {
1165: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1166: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1167: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1168: int valid_options=0;
1.204 paf 1169: if(Value* vbind=options->get(sql_bind_name)) {
1170: valid_options++;
1171: bind=vbind->get_hash();
1172: }
1.182 paf 1173: if(Value* vlimit=options->get(sql_limit_name)) {
1.245 misha 1174: valid_options++;
1175: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1176: }
1.182 paf 1177: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1178: valid_options++;
1.147 paf 1179: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1180: }
1.182 paf 1181: if(valid_options!=options->count())
1.272 misha 1182: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.109 parser 1183: } else
1.272 misha 1184: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.49 paf 1185: }
1186:
1.204 paf 1187: SQL_Driver::Placeholder* placeholders=0;
1188: uint placeholders_count=0;
1189: if(bind)
1190: placeholders_count=marshal_binds(*bind, placeholders);
1191:
1.182 paf 1192: Temp_lang temp_lang(r, String::L_SQL);
1193: const String& statement_string=r.process_to_string(statement);
1.262 misha 1194: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1195:
1.182 paf 1196: Table_sql_event_handlers handlers;
1.135 paf 1197: #ifdef RESOURCES_DEBUG
1198: struct timeval mt[2];
1199: //measure:before
1200: gettimeofday(&mt[0],NULL);
1201: #endif
1.182 paf 1202: r.connection()->query(
1.203 paf 1203: statement_cstr,
1.208 paf 1204: placeholders_count, placeholders,
1.203 paf 1205: offset, limit,
1.160 paf 1206: handlers,
1207: statement_string);
1.135 paf 1208:
1209: #ifdef RESOURCES_DEBUG
1210: //measure:after connect
1211: gettimeofday(&mt[1],NULL);
1212:
1213: double t[2];
1214: for(int i=0;i<2;i++)
1215: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1216:
1217: r.sql_request_time+=t[1]-t[0];
1218: #endif
1.204 paf 1219:
1220: if(bind)
1221: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1222:
1.182 paf 1223: Table& result=
1224: handlers.table?*handlers.table: // query resulted in table? return it
1225: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1226:
1227: // replace any previous table value
1.182 paf 1228: GET_SELF(r, VTable).set_table(result);
1.49 paf 1229: }
1230:
1.233 misha 1231: static void _columns(Request& r, MethodParams& params) {
1232: const String* column_column_name;
1233: if(params.count()>0)
1234: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1235: else
1236: column_column_name=new String("column");
1.88 parser 1237:
1.182 paf 1238: Table::columns_type result_columns(new ArrayString);
1.233 misha 1239: *result_columns+=column_column_name;
1.182 paf 1240: Table& result_table=*new Table(result_columns);
1.88 parser 1241:
1.182 paf 1242: Table& source_table=GET_SELF(r, VTable).table();
1243: if(Table::columns_type source_columns=source_table.columns()) {
1244: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1245: Table::element_type result_row(new ArrayString);
1246: *result_row+=i.next();
1247: result_table+=result_row;
1.88 parser 1248: }
1249: }
1250:
1.182 paf 1251: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1252: }
1253:
1.182 paf 1254: static void _select(Request& r, MethodParams& params) {
1.231 misha 1255: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1256:
1.182 paf 1257: Table& source_table=GET_SELF(r, VTable).table();
1258: Table& result_table=*new Table(source_table.columns());
1.148 paf 1259:
1.277 moko 1260: int limit=source_table.count();
1261: int offset = 0;
1262: bool reverse = false;
1.278 moko 1263:
1.277 moko 1264: if(params.count()>1) {
1265: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1266: if(voptions.is_defined() && !voptions.is_string())
1267: if(HashStringValue* options=voptions.get_hash()) {
1268: int valid_options=0;
1269: if(Value* vlimit=options->get(sql_limit_name)) {
1270: valid_options++;
1271: limit=r.process_to_value(*vlimit).as_int();
1272: }
1273: if(Value* voffset=options->get(sql_offset_name)) {
1274: valid_options++;
1275: offset=r.process_to_value(*voffset).as_int();
1276: }
1277: if(Value* vreverse=options->get(table_reverse_name)) {
1278: valid_options++;
1279: reverse=r.process_to_value(*vreverse).as_bool();
1280: }
1281: if(valid_options!=options->count())
1282: throw Exception(PARSER_RUNTIME,
1283: 0,
1284: "called with invalid option");
1285: } else
1286: throw Exception(PARSER_RUNTIME,
1287: 0,
1288: "options must be hash");
1289: }
1290:
1.148 paf 1291: int saved_current=source_table.current();
1.182 paf 1292: int size=source_table.count();
1.277 moko 1293: int appended = 0;
1294:
1295: if(reverse){
1296: for(int row=size-1; row >=0 && result_table.count() < limit; row--) {
1.278 moko 1297: source_table.set_current(row);
1.148 paf 1298:
1.277 moko 1299: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1300:
1301: if(condition && ++appended > offset) // ...condition is true, adding to the result
1.278 moko 1302: result_table+=source_table[row];
1303: }
1.277 moko 1304: } else {
1305: for(int row=0; row < size && result_table.count() < limit; row++) {
1306: source_table.set_current(row);
1307:
1308: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.148 paf 1309:
1.277 moko 1310: if(condition && ++appended > offset) // ...condition is true, adding to the result
1.278 moko 1311: result_table+=source_table[row];
1.277 moko 1312: }
1.148 paf 1313: }
1314: source_table.set_current(saved_current);
1315:
1.182 paf 1316: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1317: }
1318:
1.66 paf 1319: // constructor
1320:
1.182 paf 1321: MTable::MTable(): Methoded("table") {
1.142 paf 1322: // ^table::create{data}
1323: // ^table::create[nameless]{data}
1324: // ^table::create[table]
1.236 misha 1325: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1326: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1327: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1328:
1.142 paf 1329: // ^table::load[file]
1330: // ^table::load[nameless;file]
1.168 paf 1331: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1332:
1333: // ^table.save[file]
1334: // ^table.save[nameless;file]
1.188 paf 1335: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1336:
1.224 misha 1337: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1338:
1.6 paf 1339: // ^table.count[]
1.280 ! misha 1340: // ^table.count[rows]
! 1341: // ^table.count[columns]
! 1342: // ^table.count[cells]
! 1343: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1344:
1345: // ^table.line[]
1.66 paf 1346: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1347:
1.10 paf 1348: // ^table.offset[]
1.133 paf 1349: // ^table.offset(offset)
1350: // ^table.offset[cur|set](offset)
1351: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1352:
1.10 paf 1353: // ^table.menu{code}
1354: // ^table.menu{code}[delim]
1.66 paf 1355: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1356:
1.239 misha 1357: // ^table.hash[key field name]
1358: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1359: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1360:
1.102 parser 1361: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1362: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1363: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1364:
1.36 paf 1365: // ^table.locate[field;value]
1.176 paf 1366: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1367:
1368: // ^table.flip[]
1.66 paf 1369: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1370:
1371: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1372: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1373:
1.157 paf 1374: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1375: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1376:
1377:
1.239 misha 1378: // ^table::sql[query]
1379: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1380: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1381:
1.239 misha 1382: // ^table.columns[[column name]]
1.233 misha 1383: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1384:
1385: // ^table.select(expression) = table
1.277 moko 1386: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1387: }
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