Annotation of parser3/src/classes/table.C, revision 1.288
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.286 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (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:
1.257 misha 8: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 9: #include <sstream>
1.240 misha 10: #endif
1.1 paf 11:
1.105 parser 12: #include "classes.h"
1.182 paf 13: #include "pa_vmethod_frame.h"
14:
1.16 paf 15: #include "pa_common.h"
1.1 paf 16: #include "pa_request.h"
1.265 misha 17: #include "pa_charsets.h"
1.1 paf 18: #include "pa_vtable.h"
1.6 paf 19: #include "pa_vint.h"
1.51 paf 20: #include "pa_sql_connection.h"
1.72 paf 21: #include "pa_vbool.h"
1.277 moko 22: #include "pa_array.h"
1.1 paf 23:
1.288 ! misha 24: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.287 2012-05-23 16:26:40 moko Exp $";
1.286 moko 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:
1.288 ! misha 59: HashStringValue* options=params.as_hash(options_index);
1.176 paf 60: if(!options)
61: return result;
62:
63: result.defined=true;
64: bool defined_offset=false;
65:
66: int valid_options=0;
1.182 paf 67: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 68: valid_options++;
69: defined_offset=true;
70: if(voffset->is_string()) {
1.182 paf 71: const String& soffset=*voffset->get_string();
1.176 paf 72: if(soffset == "cur")
73: result.offset=source.current();
74: else
1.226 misha 75: throw Exception(PARSER_RUNTIME,
1.176 paf 76: &soffset,
77: "must be 'cur' string or expression");
78: } else
79: result.offset=r.process_to_value(*voffset).as_int();
80: }
1.182 paf 81: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 82: valid_options++;
83: result.limit=r.process_to_value(*vlimit).as_int();
84: }
1.182 paf 85: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
86: valid_options++;
87: result.reverse=r.process_to_value(*vreverse).as_bool();
88: if(result.reverse && !defined_offset)
89: result.offset=source.count()-1;
90: }
91:
92: if(valid_options!=options->count())
1.272 misha 93: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 94:
95: return result;
96: }
1.180 paf 97: static void check_option_param(bool options_defined,
1.182 paf 98: MethodParams& params, size_t next_param_index,
1.176 paf 99: const char *msg) {
1.182 paf 100: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 101: throw Exception(PARSER_RUNTIME,
1.182 paf 102: 0,
1.176 paf 103: "%s", msg);
1.157 paf 104: }
105:
1.236 misha 106: struct TableSeparators {
107: char column; const String* scolumn;
108: char encloser; const String* sencloser;
109:
110: TableSeparators():
1.254 misha 111: column('\t'), scolumn(new String("\t")),
1.236 misha 112: encloser(0), sencloser(0)
113: {}
114: int load( HashStringValue& options ) {
115: int result=0;
116: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
117: scolumn=&vseparator->as_string();
118: if(scolumn->length()!=1)
119: throw Exception(PARSER_RUNTIME,
120: scolumn,
121: "separator must be one character long");
122: column=scolumn->first_char();
123: result++;
124: }
125: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
126: sencloser=&vencloser->as_string();
127: if(sencloser->length()!=1)
128: throw Exception(PARSER_RUNTIME,
129: sencloser,
130: "encloser must be one character long");
131: encloser=sencloser->first_char();
132: result++;
133: }
134: return result;
135: }
136: };
137:
1.182 paf 138: static void _create(Request& r, MethodParams& params) {
1.157 paf 139: // clone/copy part?
1.182 paf 140: if(Table *source=params[0].get_table()) {
1.268 misha 141: Table::Action_options o=get_action_options(r, params, 1, *source);
1.182 paf 142: check_option_param(o.defined, params, 1,
1.176 paf 143: "too many parameters");
1.182 paf 144: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 145: return;
146: }
1.142 paf 147:
1.236 misha 148: size_t data_param_index=0;
149: bool nameless=false;
150:
151: if(params.count()>1) {
152: if(params[0].is_string()){ // can be nameless only
153: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
154: if(snameless!="nameless")
155: throw Exception(PARSER_RUNTIME,
156: &snameless,
157: "table::create called with more then 1 param, first param may be only 'nameless'");
158: nameless=true;
159: data_param_index++;
160: }
161: }
162:
163: HashStringValue *options=0;
164: TableSeparators separators;
165:
166: size_t options_param_index=data_param_index+1;
167: if(
168: options_param_index<params.count()
1.288 ! misha 169: && (options=params.as_hash(options_param_index))
1.236 misha 170: ) {
171: // cloning, so that we could change
172: options=new HashStringValue(*options);
173: separators.load(*options);
174: if(separators.encloser){
175: throw Exception(PARSER_RUNTIME,
176: 0,
177: "encloser not supported for table::create yet");
178: }
179: }
180:
181: // data
1.182 paf 182: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
183: const String& data=
1.236 misha 184: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 185:
186: // parse columns
1.182 paf 187: size_t raw_pos_after=0;
188: Table::columns_type columns;
1.236 misha 189:
190: if(nameless){
1.182 paf 191: columns=Table::columns_type(0); // nameless
1.21 paf 192: } else {
1.182 paf 193: columns=Table::columns_type(new ArrayString);
1.44 paf 194:
1.182 paf 195: ArrayString head;
196: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
197: if(head.count()) {
198: size_t col_pos_after=0;
1.285 misha 199: if(head[0]->is_empty())
200: *columns += new String();
201: else
202: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 203: }
1.44 paf 204: }
205:
1.182 paf 206: Table& table=*new Table(columns);
1.44 paf 207: // parse cells
1.182 paf 208:
209: ArrayString rows;
210: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
211: Array_iterator<const String*> i(rows);
1.98 parser 212: while(i.has_next()) {
1.182 paf 213: Table::element_type row(new ArrayString);
1.252 misha 214: const String& string=*i.next();
1.118 parser 215: // remove comment lines
1.252 misha 216: if(string.is_empty())
1.44 paf 217: continue;
218:
1.182 paf 219: size_t col_pos_after=0;
1.236 misha 220: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 221: table+=row;
1.17 paf 222: }
1.1 paf 223:
1.44 paf 224: // replace any previous table value
1.182 paf 225: GET_SELF(r, VTable).set_table(table);
1.44 paf 226: }
227:
1.187 paf 228: struct lsplit_result {
229: char* piece;
230: char delim;
231:
232: operator bool() { return piece!=0; }
233: };
234:
235: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
236: lsplit_result result;
1.273 misha 237: if(string) {
1.187 paf 238: char delims[]={delim1, delim2, 0};
239: if(char* v=strpbrk(string, delims)) {
240: result.delim=*v;
241: *v=0;
242: result.piece=v+1;
243: return result;
244: }
1.273 misha 245: }
1.187 paf 246: result.piece=0;
247: result.delim=0;
1.273 misha 248: return result;
1.187 paf 249: }
250:
251: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
1.273 misha 252: lsplit_result result;
1.187 paf 253: result.piece=*string_ref;
254: lsplit_result next=lsplit(*string_ref, delim1, delim2);
255: result.delim=next.delim;
256: *string_ref=next.piece;
1.273 misha 257: return result;
1.187 paf 258: }
259:
260: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
261: lsplit_result result;
262:
1.273 misha 263: if(char* string=*string_ref) {
1.187 paf 264: if(encloser && *string==encloser) {
1.273 misha 265: string++;
1.187 paf 266:
267: char *read;
268: char *write;
269: write=read=string;
270: char c;
1.193 paf 271: while((c=*read++)) {
1.187 paf 272: if(c==encloser) {
273: char n=*read;
274: if(n==encloser) // double-encloser stands for encloser
275: read++;
276: else if(n==delim1 || n==delim2) {
277: result.delim=n;
278: read++;
279: break;
280: }
281: }
282:
283: *write++=c;
284: }
285: *write=0; // terminate
286: *string_ref=c? read: 0;
287: result.piece=string;
288: return result;
289: } else
290: return lsplit(string_ref, delim1, delim2);
1.273 misha 291: }
1.187 paf 292: result.piece=0;
1.273 misha 293: return result;
1.187 paf 294: }
295:
296: static void skip_empty_and_comment_lines( char** data_ref ) {
297: if(char *data=*data_ref) {
298: while( char c=*data ) {
299: if( c== '\n' || c == '#' ) {
300: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 301: if(!(*data_ref=data))
302: break;
1.187 paf 303: continue;
304: }
305: break;
306: }
307: }
308: }
309:
1.273 misha 310: static void skip_empty_lines( char** data_ref ) {
311: if(char *data=*data_ref) {
312: while( char c=*data ) {
313: if( c== '\n' ) {
314: /*nowhere=*/getrow(&data); // remove empty lines
315: if(!(*data_ref=data))
316: break;
317: continue;
318: }
319: break;
320: }
321: }
322: }
323:
324: typedef void (*Skip_lines_action)(char** data_ref);
325:
1.182 paf 326: static void _load(Request& r, MethodParams& params) {
1.232 misha 327: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 328: int filename_param_index=0;
329: bool nameless=first_param=="nameless";
330: if(nameless)
331: filename_param_index++;
1.182 paf 332: size_t options_param_index=filename_param_index+1;
1.186 paf 333:
334: HashStringValue *options=0;
1.187 paf 335: TableSeparators separators;
1.186 paf 336: if(options_param_index<params.count()
1.288 ! misha 337: && (options=params.as_hash(options_param_index))) {
1.186 paf 338: // cloning, so that we could change [to simplify checks on params inside file_read_text
339: options=new HashStringValue(*options);
1.187 paf 340: separators.load(*options);
1.186 paf 341: }
342:
1.44 paf 343: // loading text
1.247 misha 344: char *data=file_load_text(r,
1.232 misha 345: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 346: true,
1.186 paf 347: options
1.168 paf 348: );
1.44 paf 349:
1.273 misha 350: Skip_lines_action skip_lines_action = (separators.column=='#' || separators.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
351:
1.1 paf 352: // parse columns
1.182 paf 353: Table::columns_type columns;
1.168 paf 354: if(nameless) {
1.182 paf 355: columns=Table::columns_type(0); // nameless
1.1 paf 356: } else {
1.182 paf 357: columns=Table::columns_type(new ArrayString);
1.1 paf 358:
1.273 misha 359: skip_lines_action(&data);
1.187 paf 360: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 361: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 362: if(sr.delim=='\n')
363: break;
1.139 paf 364: }
1.1 paf 365: }
1.187 paf 366:
367: Table& table=*new Table(columns);
1.219 paf 368: int columns_count=columns? columns->count(): 0;
1.1 paf 369:
370: // parse cells
1.218 paf 371: Table::element_type row(new ArrayString(columns_count));
1.273 misha 372: skip_lines_action(&data);
1.187 paf 373: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 374: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
375: break;
1.256 misha 376: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 377: if(sr.delim=='\n') {
378: table+=row;
1.218 paf 379: row=new ArrayString(columns_count);
1.273 misha 380: skip_lines_action(&data);
1.1 paf 381: }
1.187 paf 382: }
383: // last line [if without \n]
384: if(row->count())
1.1 paf 385: table+=row;
1.187 paf 386:
1.1 paf 387: // replace any previous table value
1.182 paf 388: GET_SELF(r, VTable).set_table(table);
1.1 paf 389: }
1.2 paf 390:
1.257 misha 391: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 392:
1.269 misha 393: #include "gc_allocator.h"
394:
395: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
396: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
397:
398: void maybe_enclose( pa_stringstream& to, const String& from, char encloser ) {
1.188 paf 399: if(encloser) {
1.257 misha 400: to<<encloser;
1.188 paf 401: // while we have 'encloser'...
1.189 paf 402: size_t pos_after=0;
1.220 paf 403: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
404: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 405: to<<from.mid(pos_after, pos_before).cstr();
406: to<<encloser; // doubling encloser
1.188 paf 407: }
408: // last piece
409: size_t from_length=from.length();
410: if(pos_after<from_length)
1.257 misha 411: to<<from.mid(pos_after, from_length).cstr();
1.188 paf 412:
1.257 misha 413: to<<encloser;
1.188 paf 414: } else
1.257 misha 415: to<<from.cstr();
1.188 paf 416: }
417:
1.241 misha 418: #else
419:
1.257 misha 420: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.224 misha 421: if(encloser) {
1.257 misha 422: to<<*sencloser;
1.224 misha 423: // while we have 'encloser'...
424: size_t pos_after=0;
425: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
426: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 427: to<<from.mid(pos_after, pos_before);
428: to<<*sencloser; // doubling encloser
1.224 misha 429: }
430: // last piece
431: size_t from_length=from.length();
432: if(pos_after<from_length)
1.257 misha 433: to<<from.mid(pos_after, from_length);
1.224 misha 434:
1.257 misha 435: to<<*sencloser;
1.224 misha 436: } else
1.257 misha 437: to<<from;
1.224 misha 438: }
439:
1.257 misha 440: #endif // don't use stringstream
1.241 misha 441:
442: static void _save(Request& r, MethodParams& params) {
1.237 misha 443: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 444: size_t param_index=1;
445:
446: bool do_append=false;
447: bool output_column_names=true;
448:
449: // mode?
450: if(first_arg=="append")
451: do_append=true;
452: else if(first_arg=="nameless")
453: output_column_names=false;
454: else
455: --param_index;
456:
1.232 misha 457: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 458: String file_spec=r.absolute(file_name);
459:
460: if(do_append && file_exist(file_spec))
461: output_column_names=false;
1.188 paf 462:
463: TableSeparators separators;
1.281 misha 464: if(param_index<params.count())
1.288 ! misha 465: if(HashStringValue* options=params.as_hash(param_index++)) {
1.281 misha 466: int valid_options=separators.load(*options);
467: if(valid_options!=options->count())
468: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 469: }
1.281 misha 470:
1.188 paf 471: if(param_index<params.count())
1.226 misha 472: throw Exception(PARSER_RUNTIME,
1.188 paf 473: 0,
474: "bad mode (must be nameless or append)");
1.22 paf 475:
1.182 paf 476: Table& table=GET_SELF(r, VTable).table();
1.31 paf 477:
1.257 misha 478: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 479:
1.269 misha 480: pa_stringstream ost(std::stringstream::out);
1.257 misha 481:
482: // process header
1.188 paf 483: if(output_column_names) {
1.31 paf 484: if(table.columns()) { // named table
1.182 paf 485: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 486: maybe_enclose( ost, *i.next(), separators.encloser );
487: if(i.has_next()){
488: ost<<separators.column;
489: }
1.31 paf 490: }
1.188 paf 491: } else { // nameless table [we were asked to output column names]
1.182 paf 492: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 493: for(int column=0; column<lsize; column++) {
1.257 misha 494: if(separators.encloser) {
495: ost<<separators.encloser<<column<<separators.encloser;
496: } else {
497: ost<<column;
498: }
499: if(column<lsize-1){
500: ost<<separators.column;
501: }
1.31 paf 502: }
503: else
1.257 misha 504: ost<<"empty nameless table";
1.31 paf 505: }
1.257 misha 506: ost<<'\n';
1.188 paf 507: }
1.129 paf 508:
1.257 misha 509: // process data lines
1.182 paf 510: Array_iterator<ArrayString*> i(table);
1.98 parser 511: while(i.has_next()) {
1.182 paf 512: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 513: maybe_enclose( ost, *c.next(), separators.encloser );
1.98 parser 514: if(c.has_next())
1.257 misha 515: ost<<separators.column;
1.31 paf 516: }
1.257 misha 517: ost<<'\n';
1.31 paf 518: }
519:
520: // write
1.217 paf 521: {
1.269 misha 522: pa_string data=ost.str();
1.257 misha 523: const char* data_cstr=data.c_str();
524:
1.267 misha 525: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.217 paf 526: }
1.22 paf 527:
1.241 misha 528: #else
1.240 misha 529:
1.257 misha 530: String sdata;
1.224 misha 531: if(output_column_names) {
532: if(table.columns()) { // named table
533: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 534: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
535: if(i.has_next())
536: sdata<<*separators.scolumn;
1.224 misha 537: }
538: } else { // nameless table [we were asked to output column names]
539: if(int lsize=table.count()?table[0]->count():0)
540: for(int column=0; column<lsize; column++) {
1.257 misha 541: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
542: sdata.append_know_length(cindex_tab,
543: snprintf(cindex_tab, MAX_NUMBER,
544: column<lsize-1?"%d%c":"%d", column, separators.column),
545: String::L_CLEAN);
1.224 misha 546: }
547: else
1.257 misha 548: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.224 misha 549: }
1.257 misha 550: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 551: }
552:
1.257 misha 553: // data lines
1.224 misha 554: Array_iterator<ArrayString*> i(table);
555: while(i.has_next()) {
556: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 557: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.224 misha 558: if(c.has_next())
1.257 misha 559: sdata<<*separators.scolumn;
1.224 misha 560: }
1.257 misha 561: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 562: }
563:
564: // write
565: {
1.257 misha 566: const char* data_cstr=sdata.cstr();
1.267 misha 567: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true, do_append);
1.257 misha 568: if(*data_cstr) // not empty (when empty it's not heap memory)
569: pa_free((void*)data_cstr); // not needed anymore
1.224 misha 570: }
1.240 misha 571:
1.257 misha 572: #endif // don't use stringstream
1.224 misha 573: }
574:
1.280 misha 575: static void _count(Request& r, MethodParams& params) {
576: Table& table=GET_SELF(r, VTable).table();
577: size_t result=0;
578: if(params.count()) {
579: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
580: if(param == "columns")
581: result = table.columns() ? table.columns()->count() : 0;
582: else if(param == "cells")
583: result = table.count() ? table[table.current()]->count() : 0;
584: else if(param == "rows") // synonim for ^table.count[]
585: result = table.count();
586: else
587: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
588: } else
589: result = table.count();
590:
1.182 paf 591: r.write_no_lang(*new VInt(result));
1.6 paf 592: }
593:
1.182 paf 594: static void _line(Request& r, MethodParams&) {
595: int result=1+GET_SELF(r, VTable).table().current();
596: r.write_no_lang(*new VInt(result));
1.6 paf 597: }
598:
1.182 paf 599: static void _offset(Request& r, MethodParams& params) {
600: Table& table=GET_SELF(r, VTable).table();
601: if(params.count()) {
1.133 paf 602: bool absolute=false;
1.182 paf 603: if(params.count()>1) {
604: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 605: if(whence=="cur")
1.134 paf 606: absolute=false;
1.133 paf 607: else if(whence=="set")
1.134 paf 608: absolute=true;
1.133 paf 609: else
1.226 misha 610: throw Exception(PARSER_RUNTIME,
1.134 paf 611: &whence,
612: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 613: }
1.133 paf 614:
1.211 paf 615: int offset=params.as_int(params.count()-1, "offset must be expression", r);
616: table.offset(absolute, offset);
1.151 paf 617: } else
1.182 paf 618: r.write_no_lang(*new VInt(table.current()));
1.6 paf 619: }
620:
1.182 paf 621: static void _menu(Request& r, MethodParams& params) {
1.263 misha 622: InCycle temp(r);
1.221 paf 623:
1.182 paf 624: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 625:
1.182 paf 626: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 627:
1.182 paf 628: Table& table=GET_SELF(r, VTable).table();
1.99 parser 629: int saved_current=table.current();
1.182 paf 630: int size=table.count();
1.7 paf 631:
1.251 misha 632: if(delim_maybe_code) { // delimiter set
1.250 misha 633: bool need_delim=false;
634: for(int row=0; row<size; row++) {
635: table.set_current(row);
636:
637: StringOrValue sv_processed=r.process(body_code);
638: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
639:
640: const String* s_processed=sv_processed.get_string();
1.251 misha 641: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 642: if(need_delim) // need delim & iteration produced string?
643: r.write_pass_lang(r.process(*delim_maybe_code));
644: else
645: need_delim=true;
646: }
647:
648: r.write_pass_lang(sv_processed);
1.242 misha 649:
1.250 misha 650: if(lskip==Request::SKIP_BREAK)
651: break;
652: }
653: } else {
654: for(int row=0; row<size; row++) {
655: table.set_current(row);
656:
657: r.process_write(body_code);
658: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
659:
660: if(lskip==Request::SKIP_BREAK)
661: break;
1.7 paf 662: }
663: }
1.99 parser 664: table.set_current(saved_current);
1.7 paf 665: }
666:
1.110 parser 667: #ifndef DOXYGEN
1.74 paf 668: struct Row_info {
1.166 paf 669: Request *r;
1.74 paf 670: Table *table;
1.182 paf 671: Value* key_code;
672: size_t key_field;
673: Array<int>* value_fields;
674: HashStringValue* hash;
1.174 paf 675: Table2hash_distint distinct;
1.182 paf 676: size_t row;
1.227 misha 677: Table2hash_value_type value_type;
1.74 paf 678: };
1.110 parser 679: #endif
1.182 paf 680: static void table_row_to_hash(Table::element_type row, Row_info *info) {
681: const String* key;
682: if(info->key_code) {
683: info->table->set_current(info->row++); // change context row
684: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 685: key=&sv_processed.as_string();
1.227 misha 686: } else {
1.182 paf 687: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 688: }
1.166 paf 689:
690: if(!key)
691: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 692:
1.243 misha 693: bool exist=false;
694: switch(info->value_type) {
695: case C_STRING: {
1.271 misha 696: size_t index=info->value_fields->get(0);
697: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 698: break;
1.227 misha 699: }
1.243 misha 700: case C_HASH: {
1.182 paf 701: VHash* vhash=new VHash;
702: HashStringValue& hash=vhash->hash();
703: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
704: size_t value_field=i.next();
705: if(value_field<row->count())
1.174 paf 706: hash.put(
1.182 paf 707: *info->table->columns()->get(value_field),
708: new VString(*row->get(value_field)));
1.174 paf 709: }
710:
1.227 misha 711: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 712: break;
1.174 paf 713: }
1.243 misha 714: case C_TABLE: {
715: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 716: Table* table;
1.227 misha 717: if(vtable) {
1.243 misha 718: if(info->distinct==D_ILLEGAL) {
719: exist=true;
720: break;
721: }
1.174 paf 722: table=vtable->get_table();
1.227 misha 723: } else {
1.174 paf 724: // no? creating table of same structure as source
1.179 paf 725: Table::Action_options table_options(0, 0);
1.182 paf 726: table=new Table(*info->table, table_options/*no rows, just structure*/);
727: info->hash->put(*key, new VTable(table));
1.174 paf 728: }
1.182 paf 729: *table+=row;
1.243 misha 730: break;
1.174 paf 731: }
1.74 paf 732: }
1.227 misha 733: if(exist && info->distinct==D_ILLEGAL)
734: throw Exception(PARSER_RUNTIME,
735: key,
736: "duplicate key");
1.74 paf 737: }
1.235 misha 738:
739: Table2hash_value_type get_value_type(Value& vvalue_type){
740: if(vvalue_type.is_string()) {
741: const String& svalue_type=*vvalue_type.get_string();
742: if(svalue_type == "table"){
743: return C_TABLE;
744: } else if (svalue_type == "string") {
745: return C_STRING;
746: } else if (svalue_type == "hash") {
747: return C_HASH;
748: } else {
749: throw Exception(PARSER_RUNTIME,
750: &svalue_type,
751: "must be 'hash', 'table' or 'string'");
752: }
753: } else {
754: throw Exception(PARSER_RUNTIME,
755: 0,
756: "'type' must be hash");
757: }
758: }
759:
1.182 paf 760: static void _hash(Request& r, MethodParams& params) {
761: Table& self_table=GET_SELF(r, VTable).table();
762: VHash& result=*new VHash;
1.238 misha 763: if(Table::columns_type columns=self_table.columns()){
1.182 paf 764: if(columns->count()>0) {
1.174 paf 765: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 766: Table2hash_value_type value_type=C_HASH;
1.182 paf 767: int param_index=params.count()-1;
1.166 paf 768: if(param_index>0) {
1.288 ! misha 769: if(HashStringValue* options=params.as_hash(param_index)){ // options where specified
1.166 paf 770: --param_index;
771: int valid_options=0;
1.238 misha 772: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 773: valid_options++;
1.174 paf 774: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
775: if(vdistinct_value.is_string()) {
776: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 777: if(sdistinct=="tables") {
778: value_type=C_TABLE;
779: distinct=D_FIRST;
1.238 misha 780: } else {
1.226 misha 781: throw Exception(PARSER_RUNTIME,
1.174 paf 782: &sdistinct,
783: "must be 'tables' or true/false");
1.238 misha 784: }
785: } else {
1.174 paf 786: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 787: }
1.166 paf 788: }
1.238 misha 789: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
790: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 791: throw Exception(PARSER_RUNTIME,
792: 0,
1.238 misha 793: "you can't specify $.distinct[tables] and $.type[] together");
794:
795: valid_options++;
796: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
797: }
1.226 misha 798:
1.182 paf 799: if(valid_options!=options->count())
1.272 misha 800: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 801: }
802: }
1.238 misha 803:
1.182 paf 804: Array<int> value_fields;
1.238 misha 805: if(param_index==0){ // list of columns wasn't specified
806: if(value_type==C_STRING) // $.type[string]
807: throw Exception(PARSER_RUNTIME,
808: 0,
809: "you must specify one value field with option $.type[string]");
810:
811: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
812: value_fields+=i;
813:
814: } else { // list of columns was specified
1.227 misha 815: if(value_type==C_TABLE)
816: throw Exception(PARSER_RUNTIME,
1.174 paf 817: 0,
1.238 misha 818: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
819:
1.182 paf 820: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 821: if(value_fields_param.is_string()) { // one column as string was specified
822: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
823: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
824: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
825: const String& value_field_name =*i.next()->get(0);
826: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 827: }
828: } else
1.226 misha 829: throw Exception(PARSER_RUNTIME,
1.182 paf 830: 0,
1.226 misha 831: "value field(s) must be string or table");
1.239 misha 832: }
1.74 paf 833:
1.227 misha 834: if(value_type==C_STRING && value_fields.count()!=1)
835: throw Exception(PARSER_RUNTIME,
836: 0,
1.238 misha 837: "you can specify only one value field with option $.type[string]");
1.182 paf 838:
839: {
840: Value* key_param=¶ms[0];
1.193 paf 841: Row_info info={
842: &r,
843: &self_table,
844: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 845: /*key_field=*/0/*filled below*/,
1.193 paf 846: &value_fields,
847: &result.hash(),
848: distinct,
1.227 misha 849: /*row=*/0,
850: value_type
1.193 paf 851: };
1.195 paf 852: info.key_field=(info.key_code?-1
853: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 854:
855: int saved_current=self_table.current();
856: self_table.for_each(table_row_to_hash, &info);
857: self_table.set_current(saved_current);
1.207 paf 858:
859: result.extract_default();
1.182 paf 860: }
1.74 paf 861: }
1.238 misha 862: }
1.97 parser 863: r.write_no_lang(result);
1.74 paf 864: }
865:
1.110 parser 866: #ifndef DOXYGEN
1.78 paf 867: struct Table_seq_item {
1.182 paf 868: ArrayString* row;
1.34 paf 869: union {
1.182 paf 870: const char *c_str;
1.34 paf 871: double d;
872: } value;
1.32 paf 873: };
1.110 parser 874: #endif
1.34 paf 875: static int sort_cmp_string(const void *a, const void *b) {
876: return strcmp(
1.78 paf 877: static_cast<const Table_seq_item *>(a)->value.c_str,
878: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 879: );
880: }
881: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 882: double va=static_cast<const Table_seq_item *>(a)->value.d;
883: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 884: if(va<vb)
885: return -1;
886: else if(va>vb)
887: return +1;
888: else
889: return 0;
890: }
1.182 paf 891: static void _sort(Request& r, MethodParams& params) {
892: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 893:
1.182 paf 894: bool reverse=params.count()>1/*..[desc|asc|]*/?
895: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 896: false; // default=asc
1.32 paf 897:
1.182 paf 898: Table& old_table=GET_SELF(r, VTable).table();
899: Table& new_table=*new Table(old_table.columns());
1.34 paf 900:
1.182 paf 901: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 902: int i;
903:
904: // calculate key values
905: bool key_values_are_strings=true;
1.182 paf 906: int old_count=old_table.count();
907: for(i=0; i<old_count; i++) {
1.101 parser 908: old_table.set_current(i);
1.32 paf 909: // calculate key value
1.182 paf 910: seq[i].row=old_table[i];
1.287 moko 911: Value& value=r.process_to_value(key_maker);
1.34 paf 912: if(i==0) // determining key values type by first one
913: key_values_are_strings=value.is_string();
914:
915: if(key_values_are_strings)
916: seq[i].value.c_str=value.as_string().cstr();
917: else
1.287 moko 918: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 919: }
1.265 misha 920:
921: // @todo: handle this elsewhere
922: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
923: for(i=0; i<old_count; i++)
924: if(*seq[i].value.c_str)
925: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
926: }
927:
1.266 misha 928: // sort keys
1.182 paf 929: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 930: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 931:
1.34 paf 932: // reorder table as they require in 'seq'
1.182 paf 933: for(i=0; i<old_count; i++)
934: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
935:
936: delete[] seq;
1.32 paf 937:
1.116 parser 938: // replace any previous table value
1.182 paf 939: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 940: }
941:
1.176 paf 942: #ifndef DOXYGEN
1.182 paf 943: struct Expression_is_true_info {
1.176 paf 944: Request* r;
945: Value* expression_code;
946: };
947: #endif
1.275 misha 948:
1.191 paf 949: static bool expression_is_true(Table&, Expression_is_true_info* info) {
950: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 951: }
1.275 misha 952:
953: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 954: Value& expression_code=params.as_junction(0, "must be expression");
1.275 misha 955: const size_t options_index=1;
956: Table::Action_options o=get_action_options(r, params, options_index, table);
957: check_option_param(o.defined, params, options_index, "locate by expression only has parameters: expression and, maybe, options");
1.145 paf 958:
1.182 paf 959: Expression_is_true_info info={&r, &expression_code};
960: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 961: }
1.275 misha 962:
963: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 964: const String& name=params.as_string(0, "column name must be string");
1.232 misha 965: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.275 misha 966: const size_t options_index=2;
967: Table::Action_options o=get_action_options(r, params, options_index, table);
968: check_option_param(o.defined, params, options_index, "locate by name has parameters: name, value and, maybe, options");
969:
1.182 paf 970: return table.locate(name, value, o);
971: }
1.275 misha 972:
1.182 paf 973: static void _locate(Request& r, MethodParams& params) {
974: Table& table=GET_SELF(r, VTable).table();
1.72 paf 975:
1.182 paf 976: bool result=params[0].get_junction()?
1.275 misha 977: _locate_expression(table, r, params) :
978: _locate_name_value(table, r, params);
1.249 misha 979: r.write_no_lang(VBool::get(result));
1.145 paf 980: }
1.182 paf 981:
982:
1.191 paf 983: static void _flip(Request& r, MethodParams&) {
1.182 paf 984: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 985: Table& new_table=*new Table(0);
1.182 paf 986: if(size_t old_count=old_table.count())
1.270 misha 987: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 988: for(size_t column=0; column<old_cols; column++) {
989: Table::element_type new_row(new ArrayString(old_count));
990: for(size_t i=0; i<old_count; i++) {
991: Table::element_type old_row=old_table[i];
992: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 993: }
1.182 paf 994: new_table+=new_row;
1.39 paf 995: }
996:
1.182 paf 997: r.write_no_lang(*new VTable(&new_table));
1.39 paf 998: }
999:
1.182 paf 1000: static void _append(Request& r, MethodParams& params) {
1001: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1002: const String& string=r.process_to_string(params[0]);
1.41 paf 1003:
1004: // parse cells
1.182 paf 1005: Table::element_type row=new ArrayString;
1006: size_t pos_after=0;
1007: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1008:
1.182 paf 1009: GET_SELF(r, VTable).table()+=row;
1.41 paf 1010: }
1011:
1.182 paf 1012: static void join_named_row(Table& src, Table* dest) {
1013: Table::columns_type dest_columns=dest->columns();
1014: size_t dest_columns_count=dest_columns->count();
1015: Table::element_type dest_row(new ArrayString(dest_columns_count));
1016: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1017: const String* src_item=src.item(*dest_columns->get(dest_column));
1018: *dest_row+=src_item?src_item:new String;
1019: }
1020: *dest+=dest_row;
1021: }
1022: static void join_nameless_row(Table& src, Table* dest) {
1023: *dest+=src[src.current()];
1024: }
1025: static void _join(Request& r, MethodParams& params) {
1.288 ! misha 1026: Table& src=*params.as_table(0, "source");
1.176 paf 1027:
1.268 misha 1028: Table::Action_options o=get_action_options(r, params, 1, src);
1.288 ! misha 1029: check_option_param(o.defined, params, 1, "invalid extra parameter");
1.42 paf 1030:
1.182 paf 1031: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1032: if(&src == &dest)
1.226 misha 1033: throw Exception(PARSER_RUNTIME,
1.182 paf 1034: 0,
1.42 paf 1035: "source and destination are same table");
1036:
1.193 paf 1037: if(dest.columns()) // dest is named
1.182 paf 1038: src.table_for_each(join_named_row, &dest, o);
1039: else // dest is nameless
1040: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1041: }
1042:
1.94 parser 1043: #ifndef DOXYGEN
1.169 paf 1044: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1045: ArrayString& columns;
1.218 paf 1046: int columns_count;
1.182 paf 1047: ArrayString* row;
1.94 parser 1048: public:
1.182 paf 1049: Table* table;
1050: public:
1051: Table_sql_event_handlers() :
1052: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1053: }
1054:
1.279 misha 1055: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1056: try {
1.274 moko 1057: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1058: return false;
1059: } catch(...) {
1060: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1061: return true;
1062: }
1063: }
1064: bool before_rows(SQL_Error& error) {
1065: try {
1.182 paf 1066: table=new Table(&columns);
1.218 paf 1067: columns_count=columns.count();
1.170 paf 1068: return false;
1069: } catch(...) {
1070: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1071: return true;
1072: }
1073: }
1074: bool add_row(SQL_Error& error) {
1075: try {
1.218 paf 1076: *table+=row=new ArrayString(columns_count);
1.170 paf 1077: return false;
1078: } catch(...) {
1079: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1080: return true;
1081: }
1082: }
1.279 misha 1083: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1084: try {
1.274 moko 1085: *row+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1086: return false;
1087: } catch(...) {
1088: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1089: return true;
1090: }
1.94 parser 1091: }
1092: };
1093: #endif
1.204 paf 1094:
1095: static void marshal_bind(
1096: HashStringValue::key_type aname,
1097: HashStringValue::value_type avalue,
1098: SQL_Driver::Placeholder** pptr)
1099: {
1100: SQL_Driver::Placeholder& ph=**pptr;
1101: ph.name=aname.cstr();
1.261 misha 1102: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1103: ph.is_null=avalue->get_class()==void_class;
1104: ph.were_updated=false;
1105:
1106: (*pptr)++;
1107: }
1108:
1109: // not static, used elsewhere
1110: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1111: int hash_count=hash.count();
1112: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1113: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1114: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1115: return hash_count;
1116: }
1117:
1118: // not static, used elsewhere
1119: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1120: SQL_Driver::Placeholder* ph=placeholders;
1121: for(int i=0; i<placeholder_count; i++, ph++)
1122: if(ph->were_updated) {
1123: Value* value;
1124: if(ph->is_null)
1.248 misha 1125: value=VVoid::get();
1.204 paf 1126: else
1.256 misha 1127: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1128: hash.put(ph->name, value);
1129: }
1130: }
1131:
1.182 paf 1132: static void _sql(Request& r, MethodParams& params) {
1133: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1134:
1.204 paf 1135: HashStringValue* bind=0;
1.244 misha 1136: ulong limit=SQL_NO_LIMIT;
1.100 parser 1137: ulong offset=0;
1.281 misha 1138: if(params.count()>1)
1.288 ! misha 1139: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1140: int valid_options=0;
1141: if(Value* vbind=options->get(sql_bind_name)) {
1142: valid_options++;
1143: bind=vbind->get_hash();
1144: }
1145: if(Value* vlimit=options->get(sql_limit_name)) {
1146: valid_options++;
1147: limit=(ulong)r.process_to_value(*vlimit).as_double();
1148: }
1149: if(Value* voffset=options->get(sql_offset_name)) {
1150: valid_options++;
1151: offset=(ulong)r.process_to_value(*voffset).as_double();
1152: }
1153: if(valid_options!=options->count())
1154: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1155: }
1.49 paf 1156:
1.204 paf 1157: SQL_Driver::Placeholder* placeholders=0;
1158: uint placeholders_count=0;
1159: if(bind)
1160: placeholders_count=marshal_binds(*bind, placeholders);
1161:
1.182 paf 1162: Temp_lang temp_lang(r, String::L_SQL);
1163: const String& statement_string=r.process_to_string(statement);
1.262 misha 1164: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1165:
1.182 paf 1166: Table_sql_event_handlers handlers;
1.135 paf 1167: #ifdef RESOURCES_DEBUG
1168: struct timeval mt[2];
1169: //measure:before
1170: gettimeofday(&mt[0],NULL);
1171: #endif
1.182 paf 1172: r.connection()->query(
1.203 paf 1173: statement_cstr,
1.208 paf 1174: placeholders_count, placeholders,
1.203 paf 1175: offset, limit,
1.160 paf 1176: handlers,
1177: statement_string);
1.135 paf 1178:
1179: #ifdef RESOURCES_DEBUG
1180: //measure:after connect
1181: gettimeofday(&mt[1],NULL);
1182:
1183: double t[2];
1184: for(int i=0;i<2;i++)
1185: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1186:
1187: r.sql_request_time+=t[1]-t[0];
1188: #endif
1.204 paf 1189:
1190: if(bind)
1191: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1192:
1.182 paf 1193: Table& result=
1194: handlers.table?*handlers.table: // query resulted in table? return it
1195: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1196:
1197: // replace any previous table value
1.182 paf 1198: GET_SELF(r, VTable).set_table(result);
1.49 paf 1199: }
1200:
1.233 misha 1201: static void _columns(Request& r, MethodParams& params) {
1202: const String* column_column_name;
1203: if(params.count()>0)
1204: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1205: else
1206: column_column_name=new String("column");
1.88 parser 1207:
1.182 paf 1208: Table::columns_type result_columns(new ArrayString);
1.233 misha 1209: *result_columns+=column_column_name;
1.182 paf 1210: Table& result_table=*new Table(result_columns);
1.88 parser 1211:
1.182 paf 1212: Table& source_table=GET_SELF(r, VTable).table();
1213: if(Table::columns_type source_columns=source_table.columns()) {
1214: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1215: Table::element_type result_row(new ArrayString);
1216: *result_row+=i.next();
1217: result_table+=result_row;
1.88 parser 1218: }
1219: }
1220:
1.182 paf 1221: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1222: }
1223:
1.182 paf 1224: static void _select(Request& r, MethodParams& params) {
1.231 misha 1225: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1226:
1.182 paf 1227: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1228:
1.277 moko 1229: int limit=source_table.count();
1.282 misha 1230: int offset=0;
1231: bool reverse=false;
1.278 moko 1232:
1.281 misha 1233: if(params.count()>1)
1234: if(HashStringValue* options=params.as_hash(1)) {
1235: int valid_options=0;
1236: if(Value* vlimit=options->get(sql_limit_name)) {
1237: valid_options++;
1238: limit=r.process_to_value(*vlimit).as_int();
1239: }
1240: if(Value* voffset=options->get(sql_offset_name)) {
1241: valid_options++;
1242: offset=r.process_to_value(*voffset).as_int();
1243: }
1244: if(Value* vreverse=options->get(table_reverse_name)) {
1245: valid_options++;
1246: reverse=r.process_to_value(*vreverse).as_bool();
1247: }
1248: if(valid_options!=options->count())
1.288 ! misha 1249: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1250: }
1251:
1252: Table& result_table=*new Table(source_table.columns());
1.277 moko 1253:
1.283 misha 1254: size_t size=source_table.count();
1255: if(offset<0)
1256: offset+=size;
1.284 misha 1257: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1258: size_t saved_current=source_table.current();
1259: size_t appended=0;
1260:
1261: if(reverse){
1262: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1263: source_table.set_current(row);
1264:
1265: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1266:
1267: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1268: result_table+=source_table[row];
1269: if(row==0) break;
1270: }
1271: } else {
1272: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1273: source_table.set_current(row);
1.148 paf 1274:
1.282 misha 1275: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1276:
1.282 misha 1277: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1278: result_table+=source_table[row];
1279: }
1.277 moko 1280: }
1.282 misha 1281: source_table.set_current(saved_current);
1.148 paf 1282: }
1283:
1.182 paf 1284: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1285: }
1286:
1.66 paf 1287: // constructor
1288:
1.182 paf 1289: MTable::MTable(): Methoded("table") {
1.142 paf 1290: // ^table::create{data}
1291: // ^table::create[nameless]{data}
1292: // ^table::create[table]
1.236 misha 1293: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1294: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1295: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1296:
1.142 paf 1297: // ^table::load[file]
1298: // ^table::load[nameless;file]
1.168 paf 1299: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1300:
1301: // ^table.save[file]
1302: // ^table.save[nameless;file]
1.188 paf 1303: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1304:
1.224 misha 1305: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1306:
1.6 paf 1307: // ^table.count[]
1.280 misha 1308: // ^table.count[rows]
1309: // ^table.count[columns]
1310: // ^table.count[cells]
1311: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1312:
1313: // ^table.line[]
1.66 paf 1314: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1315:
1.10 paf 1316: // ^table.offset[]
1.133 paf 1317: // ^table.offset(offset)
1318: // ^table.offset[cur|set](offset)
1319: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1320:
1.10 paf 1321: // ^table.menu{code}
1322: // ^table.menu{code}[delim]
1.66 paf 1323: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1324:
1.239 misha 1325: // ^table.hash[key field name]
1326: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1327: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1328:
1.102 parser 1329: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1330: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1331: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1332:
1.36 paf 1333: // ^table.locate[field;value]
1.176 paf 1334: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1335:
1336: // ^table.flip[]
1.66 paf 1337: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1338:
1339: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1340: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1341:
1.157 paf 1342: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1343: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1344:
1345:
1.239 misha 1346: // ^table::sql[query]
1347: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1348: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1349:
1.239 misha 1350: // ^table.columns[[column name]]
1.233 misha 1351: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1352:
1353: // ^table.select(expression) = table
1.277 moko 1354: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1355: }
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