Annotation of parser3/src/classes/table.C, revision 1.321
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.312 moko 4: Copyright (c) 2001-2015 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:
1.105 parser 8: #include "classes.h"
1.182 paf 9: #include "pa_vmethod_frame.h"
10:
1.16 paf 11: #include "pa_common.h"
1.1 paf 12: #include "pa_request.h"
1.265 misha 13: #include "pa_charsets.h"
1.1 paf 14: #include "pa_vtable.h"
1.6 paf 15: #include "pa_vint.h"
1.51 paf 16: #include "pa_sql_connection.h"
1.72 paf 17: #include "pa_vbool.h"
1.277 moko 18: #include "pa_array.h"
1.1 paf 19:
1.305 moko 20: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
21: #include <sstream>
22: #define USE_STRINGSTREAM
23: #endif
24:
1.321 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.320 2016/09/06 22:38:44 moko Exp $";
1.286 moko 26:
1.66 paf 27: // class
28:
1.182 paf 29: class MTable: public Methoded {
1.66 paf 30: public: // VStateless_class
1.264 misha 31: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 32: public:
1.182 paf 33: MTable();
1.66 paf 34: };
1.1 paf 35:
1.182 paf 36: // global variable
37:
1.313 moko 38: DECLARE_CLASS_VAR(table, new MTable);
1.182 paf 39:
40: #define TABLE_REVERSE_NAME "reverse"
41:
42: // globals
43:
1.203 paf 44: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 45: String sql_limit_name(PA_SQL_LIMIT_NAME);
46: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 47: String sql_default_name(SQL_DEFAULT_NAME);
48: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 49: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 50: String table_reverse_name(TABLE_REVERSE_NAME);
51:
1.1 paf 52: // methods
1.66 paf 53:
1.319 moko 54: static Table::Action_options get_action_options(Request& r, MethodParams& params, 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
1.318 moko 75: throw Exception(PARSER_RUNTIME, &soffset, "must be 'cur' string or expression");
1.176 paf 76: } else
77: result.offset=r.process_to_value(*voffset).as_int();
78: }
1.182 paf 79: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 80: valid_options++;
81: result.limit=r.process_to_value(*vlimit).as_int();
82: }
1.182 paf 83: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
84: valid_options++;
85: result.reverse=r.process_to_value(*vreverse).as_bool();
86: if(result.reverse && !defined_offset)
87: result.offset=source.count()-1;
88: }
89:
90: if(valid_options!=options->count())
1.272 misha 91: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 92:
93: return result;
94: }
1.157 paf 95:
1.319 moko 96: struct TableControlChars {
97: char separator; const String* sseparator;
1.236 misha 98: char encloser; const String* sencloser;
99:
1.320 moko 100: char separators[3];
101:
1.319 moko 102: TableControlChars():
103: separator('\t'), sseparator(new String("\t")),
1.236 misha 104: encloser(0), sencloser(0)
1.320 moko 105: {
106: strcpy(separators,"\t\n");
107: }
108:
1.236 misha 109: int load( HashStringValue& options ) {
110: int result=0;
111: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.319 moko 112: sseparator=&vseparator->as_string();
113: if(sseparator->length()!=1)
114: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one character long");
115: separator=sseparator->first_char();
1.320 moko 116: separators[0]=separator;
1.236 misha 117: result++;
118: }
119: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
120: sencloser=&vencloser->as_string();
1.297 moko 121: if(sencloser->is_empty()){
122: encloser=0;
123: } else {
1.236 misha 124: if(sencloser->length()!=1)
1.318 moko 125: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be one character long");
1.236 misha 126: encloser=sencloser->first_char();
1.297 moko 127: }
1.236 misha 128: result++;
129: }
130: return result;
131: }
132: };
133:
1.319 moko 134:
1.182 paf 135: static void _create(Request& r, MethodParams& params) {
1.157 paf 136: // clone/copy part?
1.182 paf 137: if(Table *source=params[0].get_table()) {
1.268 misha 138: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 139: if(params.count()>2)
140: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 141: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 142: return;
143: }
1.142 paf 144:
1.236 misha 145: size_t data_param_index=0;
146: bool nameless=false;
147:
148: if(params.count()>1) {
149: if(params[0].is_string()){ // can be nameless only
150: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
151: if(snameless!="nameless")
1.318 moko 152: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 153: nameless=true;
154: data_param_index++;
155: }
156: }
157:
158: HashStringValue *options=0;
1.319 moko 159: TableControlChars control_chars;
1.236 misha 160:
161: size_t options_param_index=data_param_index+1;
162: if(
163: options_param_index<params.count()
1.288 misha 164: && (options=params.as_hash(options_param_index))
1.236 misha 165: ) {
166: // cloning, so that we could change
167: options=new HashStringValue(*options);
1.319 moko 168: control_chars.load(*options);
169: if(control_chars.encloser){
1.318 moko 170: throw Exception(PARSER_RUNTIME, 0, "encloser not supported for table::create yet");
1.236 misha 171: }
172: }
173:
174: // data
1.182 paf 175: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
176: const String& data=
1.301 misha 177: r.process_to_string(params.as_junction(data_param_index, "body must be table or code"));
1.44 paf 178:
179: // parse columns
1.182 paf 180: size_t raw_pos_after=0;
181: Table::columns_type columns;
1.236 misha 182:
183: if(nameless){
1.182 paf 184: columns=Table::columns_type(0); // nameless
1.21 paf 185: } else {
1.182 paf 186: columns=Table::columns_type(new ArrayString);
1.44 paf 187:
1.182 paf 188: ArrayString head;
189: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
190: if(head.count()) {
191: size_t col_pos_after=0;
1.285 misha 192: if(head[0]->is_empty())
193: *columns += new String();
194: else
1.319 moko 195: head[0]->split(*columns, col_pos_after, *control_chars.sseparator, String::L_AS_IS);
1.182 paf 196: }
1.44 paf 197: }
198:
1.182 paf 199: Table& table=*new Table(columns);
1.44 paf 200: // parse cells
1.182 paf 201:
202: ArrayString rows;
203: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
204: Array_iterator<const String*> i(rows);
1.98 parser 205: while(i.has_next()) {
1.182 paf 206: Table::element_type row(new ArrayString);
1.252 misha 207: const String& string=*i.next();
1.118 parser 208: // remove comment lines
1.252 misha 209: if(string.is_empty())
1.44 paf 210: continue;
211:
1.182 paf 212: size_t col_pos_after=0;
1.319 moko 213: string.split(*row, col_pos_after, *control_chars.sseparator, String::L_AS_IS);
1.182 paf 214: table+=row;
1.17 paf 215: }
1.1 paf 216:
1.44 paf 217: // replace any previous table value
1.182 paf 218: GET_SELF(r, VTable).set_table(table);
1.44 paf 219: }
220:
1.187 paf 221: struct lsplit_result {
222: char* piece;
223: char delim;
224:
1.321 ! moko 225: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 226: operator bool() { return piece!=0; }
227: };
228:
1.321 ! moko 229: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
! 230: lsplit_result result(*string_ref);
! 231: if(result.piece) {
! 232: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 233: result.delim=*v;
234: *v=0;
1.321 ! moko 235: *string_ref=v+1;
1.187 paf 236: return result;
1.321 ! moko 237: } else {
! 238: *string_ref=0;
1.187 paf 239: }
1.273 misha 240: }
241: return result;
1.187 paf 242: }
243:
1.320 moko 244: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 ! moko 245: lsplit_result result(*string_ref);
1.187 paf 246:
1.321 ! moko 247: if(result.piece) {
! 248: if(encloser && *result.piece==encloser) {
! 249: result.piece++;
1.187 paf 250:
1.321 ! moko 251: char c;
1.187 paf 252: char *read;
253: char *write;
1.321 ! moko 254: write=read=result.piece;
! 255:
1.290 moko 256: // we are enclosed, searching for second encloser
257: while(c=*read++) {
1.187 paf 258: if(c==encloser) {
1.290 moko 259: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 260: read++;
1.290 moko 261: else
262: break; // note: skipping encloser
1.187 paf 263: }
264: *write++=c;
265: }
1.321 ! moko 266:
1.290 moko 267: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
268: while(c=*read++) {
1.320 moko 269: if(c==delims[0] || c==delims[1]) {
1.290 moko 270: result.delim=c;
271: break;
272: } else if(c!=encloser)
273: *write++=c;
274: }
1.321 ! moko 275:
1.187 paf 276: *write=0; // terminate
1.321 ! moko 277: *string_ref=c ? read : 0;
1.187 paf 278: return result;
279: } else
1.320 moko 280: return lsplit(string_ref, delims);
1.273 misha 281: }
282: return result;
1.187 paf 283: }
284:
285: static void skip_empty_and_comment_lines( char** data_ref ) {
286: if(char *data=*data_ref) {
287: while( char c=*data ) {
288: if( c== '\n' || c == '#' ) {
289: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 290: if(!(*data_ref=data))
291: break;
1.187 paf 292: continue;
293: }
294: break;
295: }
296: }
297: }
298:
1.273 misha 299: static void skip_empty_lines( char** data_ref ) {
300: if(char *data=*data_ref) {
301: while( char c=*data ) {
302: if( c== '\n' ) {
303: /*nowhere=*/getrow(&data); // remove empty lines
304: if(!(*data_ref=data))
305: break;
306: continue;
307: }
308: break;
309: }
310: }
311: }
312:
313: typedef void (*Skip_lines_action)(char** data_ref);
314:
1.182 paf 315: static void _load(Request& r, MethodParams& params) {
1.232 misha 316: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 317: int filename_param_index=0;
318: bool nameless=first_param=="nameless";
319: if(nameless)
320: filename_param_index++;
1.182 paf 321: size_t options_param_index=filename_param_index+1;
1.186 paf 322:
323: HashStringValue *options=0;
1.319 moko 324: TableControlChars control_chars;
1.186 paf 325: if(options_param_index<params.count()
1.288 misha 326: && (options=params.as_hash(options_param_index))) {
1.186 paf 327: // cloning, so that we could change [to simplify checks on params inside file_read_text
328: options=new HashStringValue(*options);
1.319 moko 329: control_chars.load(*options);
1.186 paf 330: }
331:
1.44 paf 332: // loading text
1.321 ! moko 333: char *data=file_load_text(r, r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)), true, options);
1.44 paf 334:
1.319 moko 335: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 336:
1.1 paf 337: // parse columns
1.182 paf 338: Table::columns_type columns;
1.168 paf 339: if(nameless) {
1.182 paf 340: columns=Table::columns_type(0); // nameless
1.1 paf 341: } else {
1.182 paf 342: columns=Table::columns_type(new ArrayString);
1.1 paf 343:
1.273 misha 344: skip_lines_action(&data);
1.320 moko 345: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 346: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 347: if(sr.delim=='\n')
348: break;
1.139 paf 349: }
1.1 paf 350: }
1.187 paf 351:
352: Table& table=*new Table(columns);
1.219 paf 353: int columns_count=columns? columns->count(): 0;
1.1 paf 354:
355: // parse cells
1.218 paf 356: Table::element_type row(new ArrayString(columns_count));
1.273 misha 357: skip_lines_action(&data);
1.320 moko 358: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 359: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
360: break;
1.256 misha 361: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 362: if(sr.delim=='\n') {
363: table+=row;
1.218 paf 364: row=new ArrayString(columns_count);
1.273 misha 365: skip_lines_action(&data);
1.1 paf 366: }
1.187 paf 367: }
368: // last line [if without \n]
369: if(row->count())
1.1 paf 370: table+=row;
1.187 paf 371:
1.1 paf 372: // replace any previous table value
1.182 paf 373: GET_SELF(r, VTable).set_table(table);
1.1 paf 374: }
1.2 paf 375:
1.297 moko 376: #ifdef USE_STRINGSTREAM
1.269 misha 377: #include "gc_allocator.h"
378:
379: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
380: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
381:
1.298 moko 382: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 383: if(from){
1.257 misha 384: to<<encloser;
1.188 paf 385: // while we have 'encloser'...
1.189 paf 386: size_t pos_after=0;
1.297 moko 387: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 388: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 389: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 390: to<<encloser; // doubling encloser
1.188 paf 391: }
392: // last piece
1.297 moko 393: size_t from_length=from->length();
1.188 paf 394: if(pos_after<from_length)
1.297 moko 395: to<<from->mid(pos_after, from_length).cstr();
396: to<<encloser;
397: } else {
398: to<<encloser<<encloser;
399: }
400: }
401:
1.319 moko 402: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 403: if(output_column_names) {
404: if(table.columns()) { // named table
1.319 moko 405: if(control_chars.encloser){
1.297 moko 406: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 407: enclose( result, i.next(), control_chars.encloser );
1.297 moko 408: if(i.has_next())
1.319 moko 409: result<<control_chars.separator;
1.297 moko 410: }
411: } else {
412: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
413: result<<i.next()->cstr();
414: if(i.has_next())
1.319 moko 415: result<<control_chars.separator;
1.297 moko 416: }
417: }
418: } else { // nameless table [we were asked to output column names]
419: if(int lsize=table.count()?table[0]->count():0)
420: for(int column=0; column<lsize; column++) {
1.319 moko 421: if(control_chars.encloser) {
422: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 423: } else {
424: result<<column;
425: }
426: if(column<lsize-1){
1.319 moko 427: result<<control_chars.separator;
1.297 moko 428: }
429: }
430: else
431: result<<"empty nameless table";
432: }
433: result<<'\n';
434: }
1.188 paf 435:
1.297 moko 436: // process data lines
437: Array_iterator<ArrayString*> i(table);
1.319 moko 438: if(control_chars.encloser){
1.297 moko 439: while(i.has_next()) {
440: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 441: enclose( result, c.next(), control_chars.encloser );
1.297 moko 442: if(c.has_next())
1.319 moko 443: result<<control_chars.separator;
1.297 moko 444: }
445: result<<'\n';
446: }
447: } else {
448: while(i.has_next()) {
449: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
450: result<<c.next()->cstr();
451: if(c.has_next())
1.319 moko 452: result<<control_chars.separator;
1.297 moko 453: }
454: result<<'\n';
455: }
456: }
1.188 paf 457: }
458:
1.241 misha 459: #else
460:
1.298 moko 461: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 462: if(from){
1.257 misha 463: to<<*sencloser;
1.224 misha 464: // while we have 'encloser'...
465: size_t pos_after=0;
1.297 moko 466: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 467: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 468: to<<from->mid(pos_after, pos_before);
1.257 misha 469: to<<*sencloser; // doubling encloser
1.224 misha 470: }
471: // last piece
1.297 moko 472: size_t from_length=from->length();
1.224 misha 473: if(pos_after<from_length)
1.297 moko 474: to<<from->mid(pos_after, from_length);
1.257 misha 475: to<<*sencloser;
1.297 moko 476: } else {
477: to<<*sencloser<<*sencloser;
478: }
1.224 misha 479: }
480:
1.319 moko 481: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 482: if(output_column_names) {
483: if(table.columns()) { // named table
1.319 moko 484: if(control_chars.encloser) {
1.297 moko 485: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 486: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 487: if(i.has_next())
1.319 moko 488: result<<*control_chars.sseparator;
1.297 moko 489: }
490: } else {
491: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
492: result<<*i.next();
493: if(i.has_next())
1.319 moko 494: result<<*control_chars.sseparator;
1.297 moko 495: }
496: }
497: } else { // nameless table [we were asked to output column names]
498: if(int lsize=table.count()?table[0]->count():0)
499: for(int column=0; column<lsize; column++) {
1.319 moko 500: if(control_chars.encloser) {
501: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 502: } else {
503: result<<String::Body::Format(column);
504: }
505: if(column<lsize-1){
1.319 moko 506: result<<*control_chars.sseparator;
1.298 moko 507: }
1.297 moko 508: }
509: else
510: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
511: }
512: result.append_know_length("\n", 1, String::L_CLEAN);
513: }
514:
515: // data lines
516: Array_iterator<ArrayString*> i(table);
1.319 moko 517: if(control_chars.encloser){
1.297 moko 518: while(i.has_next()) {
519: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 520: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 521: if(c.has_next())
1.319 moko 522: result<<*control_chars.sseparator;
1.297 moko 523: }
524: result.append_know_length("\n", 1, String::L_CLEAN);
525: }
526: } else {
527: while(i.has_next()) {
528: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
529: result<<*c.next();
530: if(c.has_next())
1.319 moko 531: result<<*control_chars.sseparator;
1.297 moko 532: }
533: result.append_know_length("\n", 1, String::L_CLEAN);
534: }
535: }
536: }
1.257 misha 537: #endif // don't use stringstream
1.241 misha 538:
1.297 moko 539:
1.241 misha 540: static void _save(Request& r, MethodParams& params) {
1.237 misha 541: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 542: size_t param_index=1;
543:
544: bool do_append=false;
545: bool output_column_names=true;
546:
547: // mode?
548: if(first_arg=="append")
549: do_append=true;
550: else if(first_arg=="nameless")
551: output_column_names=false;
552: else
553: --param_index;
554:
1.232 misha 555: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 556: String file_spec=r.absolute(file_name);
557:
558: if(do_append && file_exist(file_spec))
559: output_column_names=false;
1.188 paf 560:
1.319 moko 561: TableControlChars control_chars;
1.281 misha 562: if(param_index<params.count())
1.288 misha 563: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 564: int valid_options=control_chars.load(*options);
1.281 misha 565: if(valid_options!=options->count())
566: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 567: }
1.281 misha 568:
1.188 paf 569: if(param_index<params.count())
1.318 moko 570: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 571:
1.182 paf 572: Table& table=GET_SELF(r, VTable).table();
1.31 paf 573:
1.297 moko 574: #ifdef USE_STRINGSTREAM
1.269 misha 575: pa_stringstream ost(std::stringstream::out);
1.257 misha 576:
1.319 moko 577: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 578:
579: // write
1.269 misha 580: pa_string data=ost.str();
1.257 misha 581: const char* data_cstr=data.c_str();
1.267 misha 582: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 583: #else
1.257 misha 584: String sdata;
1.224 misha 585:
1.319 moko 586: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 587:
588: // write
1.257 misha 589: const char* data_cstr=sdata.cstr();
1.297 moko 590: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 591: if(*data_cstr) // not empty (when empty it's not heap memory)
592: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 593: #endif
594: }
595:
596: static void _csv_string(Request& r, MethodParams& params) {
597: bool output_column_names=true;
598: size_t param_index=0;
599: if(params.count()>0 && params[0].is_string()) {
600: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
601: output_column_names=false;
602: param_index++;
603: } else {
1.318 moko 604: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 605: }
1.224 misha 606: }
1.240 misha 607:
1.319 moko 608: TableControlChars control_chars;
1.297 moko 609: if(param_index<params.count())
610: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 611: int valid_options=control_chars.load(*options);
1.297 moko 612: if(valid_options!=options->count())
613: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
614: }
615:
616: Table& table=GET_SELF(r, VTable).table();
617:
618: #ifdef USE_STRINGSTREAM
619: pa_stringstream ost(std::stringstream::out);
620:
1.319 moko 621: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 622:
623: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
624: #else
625: String sdata;
626:
1.319 moko 627: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 628:
629: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
630: #endif
1.224 misha 631: }
632:
1.280 misha 633: static void _count(Request& r, MethodParams& params) {
634: Table& table=GET_SELF(r, VTable).table();
635: size_t result=0;
636: if(params.count()) {
637: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
638: if(param == "columns")
1.310 moko 639: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 640: else if(param == "cells")
641: result = table.count() ? table[table.current()]->count() : 0;
642: else if(param == "rows") // synonim for ^table.count[]
643: result = table.count();
644: else
645: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
646: } else
647: result = table.count();
648:
1.182 paf 649: r.write_no_lang(*new VInt(result));
1.6 paf 650: }
651:
1.182 paf 652: static void _line(Request& r, MethodParams&) {
653: int result=1+GET_SELF(r, VTable).table().current();
654: r.write_no_lang(*new VInt(result));
1.6 paf 655: }
656:
1.182 paf 657: static void _offset(Request& r, MethodParams& params) {
658: Table& table=GET_SELF(r, VTable).table();
659: if(params.count()) {
1.133 paf 660: bool absolute=false;
1.182 paf 661: if(params.count()>1) {
662: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 663: if(whence=="cur")
1.134 paf 664: absolute=false;
1.133 paf 665: else if(whence=="set")
1.134 paf 666: absolute=true;
1.133 paf 667: else
1.318 moko 668: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 669: }
1.133 paf 670:
1.211 paf 671: int offset=params.as_int(params.count()-1, "offset must be expression", r);
672: table.offset(absolute, offset);
1.151 paf 673: } else
1.182 paf 674: r.write_no_lang(*new VInt(table.current()));
1.6 paf 675: }
676:
1.182 paf 677: static void _menu(Request& r, MethodParams& params) {
1.263 misha 678: InCycle temp(r);
1.221 paf 679:
1.182 paf 680: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 681:
1.182 paf 682: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 683:
1.182 paf 684: Table& table=GET_SELF(r, VTable).table();
1.293 misha 685: size_t saved_current=table.current();
1.7 paf 686:
1.251 misha 687: if(delim_maybe_code) { // delimiter set
1.250 misha 688: bool need_delim=false;
1.316 moko 689: for(size_t row=0; row<table.count(); row++) {
1.250 misha 690: table.set_current(row);
691:
692: StringOrValue sv_processed=r.process(body_code);
693: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
694:
695: const String* s_processed=sv_processed.get_string();
1.251 misha 696: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 697: if(need_delim) // need delim & iteration produced string?
698: r.write_pass_lang(r.process(*delim_maybe_code));
699: else
700: need_delim=true;
701: }
702:
703: r.write_pass_lang(sv_processed);
1.242 misha 704:
1.250 misha 705: if(lskip==Request::SKIP_BREAK)
706: break;
707: }
708: } else {
1.316 moko 709: for(size_t row=0; row<table.count(); row++) {
1.250 misha 710: table.set_current(row);
711:
712: r.process_write(body_code);
713: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
714:
715: if(lskip==Request::SKIP_BREAK)
716: break;
1.7 paf 717: }
718: }
1.99 parser 719: table.set_current(saved_current);
1.7 paf 720: }
721:
1.110 parser 722: #ifndef DOXYGEN
1.74 paf 723: struct Row_info {
1.166 paf 724: Request *r;
1.74 paf 725: Table *table;
1.182 paf 726: Value* key_code;
727: size_t key_field;
728: Array<int>* value_fields;
1.315 moko 729: Value* value_code;
1.182 paf 730: HashStringValue* hash;
1.174 paf 731: Table2hash_distint distinct;
1.182 paf 732: size_t row;
1.227 misha 733: Table2hash_value_type value_type;
1.74 paf 734: };
1.110 parser 735: #endif
1.182 paf 736: static void table_row_to_hash(Table::element_type row, Row_info *info) {
737: const String* key;
738: if(info->key_code) {
739: info->table->set_current(info->row++); // change context row
740: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 741: key=&sv_processed.as_string();
1.227 misha 742: } else {
1.182 paf 743: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 744: }
1.166 paf 745:
746: if(!key)
747: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 748:
1.243 misha 749: bool exist=false;
750: switch(info->value_type) {
751: case C_STRING: {
1.317 moko 752: if(info->value_fields->count()){
753: size_t index=info->value_fields->get(0);
754: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
755: } else {
756: exist=info->hash->put_dont_replace(*key, VString::empty());
757: }
1.243 misha 758: break;
1.227 misha 759: }
1.243 misha 760: case C_HASH: {
1.182 paf 761: VHash* vhash=new VHash;
762: HashStringValue& hash=vhash->hash();
763: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
764: size_t value_field=i.next();
765: if(value_field<row->count())
1.314 moko 766: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 767: }
768:
1.227 misha 769: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 770: break;
1.174 paf 771: }
1.243 misha 772: case C_TABLE: {
773: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 774: Table* table;
1.227 misha 775: if(vtable) {
1.243 misha 776: if(info->distinct==D_ILLEGAL) {
777: exist=true;
778: break;
779: }
1.174 paf 780: table=vtable->get_table();
1.227 misha 781: } else {
1.174 paf 782: // no? creating table of same structure as source
1.179 paf 783: Table::Action_options table_options(0, 0);
1.182 paf 784: table=new Table(*info->table, table_options/*no rows, just structure*/);
785: info->hash->put(*key, new VTable(table));
1.174 paf 786: }
1.308 moko 787: Table::element_type row_copy(new ArrayString(row->count()));
788: row_copy->append(*row);
789: *table+=row_copy;
1.243 misha 790: break;
1.174 paf 791: }
1.315 moko 792: case C_CODE: {
793: if(!info->key_code)
794: info->table->set_current(info->row++); // change context row
795: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code).as_value());
796: break;
797: }
1.74 paf 798: }
1.227 misha 799: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 800: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 801: }
1.235 misha 802:
803: Table2hash_value_type get_value_type(Value& vvalue_type){
804: if(vvalue_type.is_string()) {
805: const String& svalue_type=*vvalue_type.get_string();
806: if(svalue_type == "table"){
807: return C_TABLE;
808: } else if (svalue_type == "string") {
809: return C_STRING;
810: } else if (svalue_type == "hash") {
811: return C_HASH;
812: } else {
1.314 moko 813: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 814: }
815: } else {
1.314 moko 816: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 817: }
818: }
819:
1.315 moko 820: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
821: if(vdistinct.is_string()) {
822: const String& sdistinct=*vdistinct.get_string();
823: if(sdistinct!="tables")
824: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
825: value_type=C_TABLE;
826: return D_FIRST;
827: }
828: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
829: }
830:
1.182 paf 831: static void _hash(Request& r, MethodParams& params) {
832: Table& self_table=GET_SELF(r, VTable).table();
833: VHash& result=*new VHash;
1.238 misha 834: if(Table::columns_type columns=self_table.columns()){
1.182 paf 835: if(columns->count()>0) {
1.174 paf 836: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 837: Table2hash_value_type value_type=C_HASH;
1.182 paf 838: int param_index=params.count()-1;
1.166 paf 839: if(param_index>0) {
1.315 moko 840:
841: if(params[1].get_junction())
842: value_type=C_CODE;
843:
844: if(HashStringValue* options=params[param_index].get_hash()){ // can't use .as_hash because the 2nd param could be table so .as_hash throws an error
1.166 paf 845: --param_index;
846: int valid_options=0;
1.238 misha 847: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 848: valid_options++;
1.315 moko 849: distinct=get_distinct(r.process_to_value(*vdistinct_code), value_type);
1.166 paf 850: }
1.238 misha 851: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
852: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 853: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 854: if(value_type==C_CODE)
855: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 856: valid_options++;
857: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
858: }
1.226 misha 859:
1.182 paf 860: if(valid_options!=options->count())
1.272 misha 861: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 862: }
863: }
1.238 misha 864:
1.315 moko 865: if(param_index==2) // options were specified but not as hash
1.289 misha 866: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
867:
1.182 paf 868: Array<int> value_fields;
1.315 moko 869: Value* value_code=0;
870:
1.238 misha 871: if(param_index==0){ // list of columns wasn't specified
872: if(value_type==C_STRING) // $.type[string]
1.314 moko 873: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 874:
875: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
876: value_fields+=i;
877:
1.315 moko 878: } else { // list of columns or code was specified
1.227 misha 879: if(value_type==C_TABLE)
1.314 moko 880: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 881:
1.315 moko 882: Value& value_fields_param=params[1];
1.317 moko 883: if(value_fields_param.get_junction()){ // code specified
1.315 moko 884: value_code=&value_fields_param;
885: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 886: const String &field_name=*value_fields_param.get_string();
887: if(!field_name.is_empty())
888: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 889: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
890: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
891: const String& value_field_name =*i.next()->get(0);
892: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 893: }
894: } else
1.315 moko 895: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 896: }
1.74 paf 897:
1.227 misha 898: if(value_type==C_STRING && value_fields.count()!=1)
1.314 moko 899: throw Exception(PARSER_RUNTIME, 0, "you can specify only one value field with option $.type[string]");
1.182 paf 900:
901: {
902: Value* key_param=¶ms[0];
1.193 paf 903: Row_info info={
904: &r,
905: &self_table,
1.315 moko 906: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 907: /*key_field=*/0/*filled below*/,
1.193 paf 908: &value_fields,
1.315 moko 909: value_code,
1.193 paf 910: &result.hash(),
911: distinct,
1.227 misha 912: /*row=*/0,
913: value_type
1.193 paf 914: };
1.314 moko 915: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 916:
917: int saved_current=self_table.current();
918: self_table.for_each(table_row_to_hash, &info);
919: self_table.set_current(saved_current);
1.207 paf 920:
921: result.extract_default();
1.182 paf 922: }
1.74 paf 923: }
1.238 misha 924: }
1.97 parser 925: r.write_no_lang(result);
1.74 paf 926: }
927:
1.110 parser 928: #ifndef DOXYGEN
1.78 paf 929: struct Table_seq_item {
1.182 paf 930: ArrayString* row;
1.34 paf 931: union {
1.182 paf 932: const char *c_str;
1.34 paf 933: double d;
934: } value;
1.32 paf 935: };
1.110 parser 936: #endif
1.34 paf 937: static int sort_cmp_string(const void *a, const void *b) {
938: return strcmp(
1.78 paf 939: static_cast<const Table_seq_item *>(a)->value.c_str,
940: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 941: );
942: }
943: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 944: double va=static_cast<const Table_seq_item *>(a)->value.d;
945: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 946: if(va<vb)
947: return -1;
948: else if(va>vb)
949: return +1;
950: else
951: return 0;
952: }
1.182 paf 953: static void _sort(Request& r, MethodParams& params) {
954: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 955:
1.182 paf 956: bool reverse=params.count()>1/*..[desc|asc|]*/?
957: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 958: false; // default=asc
1.32 paf 959:
1.182 paf 960: Table& old_table=GET_SELF(r, VTable).table();
961: Table& new_table=*new Table(old_table.columns());
1.34 paf 962:
1.182 paf 963: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 964: int i;
965:
966: // calculate key values
967: bool key_values_are_strings=true;
1.182 paf 968: int old_count=old_table.count();
969: for(i=0; i<old_count; i++) {
1.101 parser 970: old_table.set_current(i);
1.32 paf 971: // calculate key value
1.182 paf 972: seq[i].row=old_table[i];
1.287 moko 973: Value& value=r.process_to_value(key_maker);
1.34 paf 974: if(i==0) // determining key values type by first one
975: key_values_are_strings=value.is_string();
976:
977: if(key_values_are_strings)
978: seq[i].value.c_str=value.as_string().cstr();
979: else
1.287 moko 980: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 981: }
1.265 misha 982:
983: // @todo: handle this elsewhere
984: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
985: for(i=0; i<old_count; i++)
986: if(*seq[i].value.c_str)
987: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
988: }
989:
1.266 misha 990: // sort keys
1.295 moko 991: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 992:
1.34 paf 993: // reorder table as they require in 'seq'
1.182 paf 994: for(i=0; i<old_count; i++)
995: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
996:
997: delete[] seq;
1.32 paf 998:
1.116 parser 999: // replace any previous table value
1.182 paf 1000: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1001: }
1002:
1.176 paf 1003: #ifndef DOXYGEN
1.182 paf 1004: struct Expression_is_true_info {
1.176 paf 1005: Request* r;
1006: Value* expression_code;
1007: };
1008: #endif
1.275 misha 1009:
1.191 paf 1010: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1011: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1012: }
1.275 misha 1013:
1014: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1015: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1016: Table::Action_options o=get_action_options(r, params, 1, table);
1017: if(params.count()>2)
1018: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1019: Expression_is_true_info info={&r, &expression_code};
1020: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1021: }
1.275 misha 1022:
1023: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1024: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1025: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1026: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1027: return table.locate(name, value, o);
1028: }
1.275 misha 1029:
1.182 paf 1030: static void _locate(Request& r, MethodParams& params) {
1031: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1032:
1.291 moko 1033: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1034: _locate_expression(table, r, params) :
1035: _locate_name_value(table, r, params);
1.249 misha 1036: r.write_no_lang(VBool::get(result));
1.145 paf 1037: }
1.182 paf 1038:
1039:
1.191 paf 1040: static void _flip(Request& r, MethodParams&) {
1.182 paf 1041: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1042: Table& new_table=*new Table(0);
1.182 paf 1043: if(size_t old_count=old_table.count())
1.310 moko 1044: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1045: for(size_t column=0; column<old_cols; column++) {
1046: Table::element_type new_row(new ArrayString(old_count));
1047: for(size_t i=0; i<old_count; i++) {
1048: Table::element_type old_row=old_table[i];
1049: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1050: }
1.182 paf 1051: new_table+=new_row;
1.39 paf 1052: }
1053:
1.182 paf 1054: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1055: }
1056:
1.293 misha 1057: static void _foreach(Request& r, MethodParams& params) {
1058: InCycle temp(r);
1059:
1060: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1061: const String& value_name=params.as_string(1, "value-var name must be string");
1062:
1063: Value& body_code=params.as_junction(2, "body must be code");
1064:
1065: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1066:
1067: Table& table=GET_SELF(r, VTable).table();
1068: size_t saved_current=table.current();
1069:
1070: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1071: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1072:
1073: Value* var_context=r.get_method_frame()->caller();
1074:
1075: if(delim_maybe_code) { // delimiter set
1076: bool need_delim=false;
1.316 moko 1077: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1078: table.set_current(row);
1079:
1080: if(rownum_var_name)
1.299 moko 1081: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1082: if(value_var_name)
1.299 moko 1083: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1084:
1085: StringOrValue sv_processed=r.process(body_code);
1086: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1087:
1088: const String* s_processed=sv_processed.get_string();
1089: if(s_processed && !s_processed->is_empty()) { // we have body
1090: if(need_delim) // need delim & iteration produced string?
1091: r.write_pass_lang(r.process(*delim_maybe_code));
1092: else
1093: need_delim=true;
1094: }
1095:
1096: r.write_pass_lang(sv_processed);
1097:
1098: if(lskip==Request::SKIP_BREAK)
1099: break;
1100: }
1101: } else {
1.316 moko 1102: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1103: table.set_current(row);
1104:
1105: if(rownum_var_name)
1.300 moko 1106: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1107: if(value_var_name)
1.300 moko 1108: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1109:
1110: r.process_write(body_code);
1111: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1112:
1113: if(lskip==Request::SKIP_BREAK)
1114: break;
1115: }
1116: }
1117: table.set_current(saved_current);
1118: }
1119:
1.309 moko 1120: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1121: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1122: }
1123:
1124: inline Table::element_type row_from_string(Request& r, Value ¶m){
1125: if(!param.is_string() && !param.get_junction())
1126: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1127:
1.182 paf 1128: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.309 moko 1129: const String& string=r.process_to_string(param);
1.41 paf 1130:
1131: // parse cells
1.182 paf 1132: Table::element_type row=new ArrayString;
1133: size_t pos_after=0;
1134: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1135:
1.309 moko 1136: return row;
1.41 paf 1137: }
1138:
1.309 moko 1139: static void _append(Request& r, MethodParams& params) {
1140: VTable vtable=GET_SELF(r, VTable);
1141: Table& table=vtable.table();
1.306 moko 1142:
1.309 moko 1143: HashStringValue* hash=params[0].get_hash();
1144: if(hash){
1145: table+=new ArrayString();
1146: size_t saved_current=table.current();
1147: table.set_current(table.count()-1);
1148: hash->for_each<VTable*>(update_cell, &vtable);
1149: table.set_current(saved_current);
1150: } else {
1151: table+=row_from_string(r, params[0]);
1152: }
1153: }
1.306 moko 1154:
1.309 moko 1155: static void _insert(Request& r, MethodParams& params) {
1156: VTable vtable=GET_SELF(r, VTable);
1157: Table& table=vtable.table();
1158: HashStringValue* hash=params[0].get_hash();
1159: if(hash){
1160: table.insert(table.current(), new ArrayString());
1161: hash->for_each<VTable*>(update_cell, &vtable);
1162: } else {
1163: table.insert(table.current(), row_from_string(r, params[0]));
1164: }
1.306 moko 1165: }
1166:
1.311 moko 1167: static void _delete(Request& r, MethodParams&) {
1.307 moko 1168: Table& table=GET_SELF(r, VTable).table();
1169: table.remove_current();
1170: }
1171:
1.182 paf 1172: static void join_named_row(Table& src, Table* dest) {
1173: Table::columns_type dest_columns=dest->columns();
1174: size_t dest_columns_count=dest_columns->count();
1175: Table::element_type dest_row(new ArrayString(dest_columns_count));
1176: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1177: const String* src_item=src.item(*dest_columns->get(dest_column));
1178: *dest_row+=src_item?src_item:new String;
1179: }
1180: *dest+=dest_row;
1181: }
1182: static void join_nameless_row(Table& src, Table* dest) {
1183: *dest+=src[src.current()];
1184: }
1185: static void _join(Request& r, MethodParams& params) {
1.288 misha 1186: Table& src=*params.as_table(0, "source");
1.176 paf 1187:
1.268 misha 1188: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1189:
1.182 paf 1190: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1191: if(&src == &dest)
1.318 moko 1192: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1193:
1.193 paf 1194: if(dest.columns()) // dest is named
1.182 paf 1195: src.table_for_each(join_named_row, &dest, o);
1196: else // dest is nameless
1197: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1198: }
1199:
1.94 parser 1200: #ifndef DOXYGEN
1.169 paf 1201: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1202: ArrayString& columns;
1.218 paf 1203: int columns_count;
1.182 paf 1204: ArrayString* row;
1.94 parser 1205: public:
1.182 paf 1206: Table* table;
1207: public:
1208: Table_sql_event_handlers() :
1209: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1210: }
1211:
1.279 misha 1212: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1213: try {
1.274 moko 1214: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1215: return false;
1216: } catch(...) {
1217: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1218: return true;
1219: }
1220: }
1221: bool before_rows(SQL_Error& error) {
1222: try {
1.182 paf 1223: table=new Table(&columns);
1.218 paf 1224: columns_count=columns.count();
1.170 paf 1225: return false;
1226: } catch(...) {
1227: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1228: return true;
1229: }
1230: }
1231: bool add_row(SQL_Error& error) {
1232: try {
1.218 paf 1233: *table+=row=new ArrayString(columns_count);
1.170 paf 1234: return false;
1235: } catch(...) {
1236: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1237: return true;
1238: }
1239: }
1.279 misha 1240: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1241: try {
1.292 misha 1242: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1243: return false;
1244: } catch(...) {
1245: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1246: return true;
1247: }
1.94 parser 1248: }
1249: };
1250: #endif
1.204 paf 1251:
1252: static void marshal_bind(
1253: HashStringValue::key_type aname,
1254: HashStringValue::value_type avalue,
1255: SQL_Driver::Placeholder** pptr)
1256: {
1257: SQL_Driver::Placeholder& ph=**pptr;
1258: ph.name=aname.cstr();
1.261 misha 1259: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1260: ph.is_null=avalue->get_class()==void_class;
1261: ph.were_updated=false;
1262:
1263: (*pptr)++;
1264: }
1265:
1266: // not static, used elsewhere
1267: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1268: int hash_count=hash.count();
1.302 moko 1269: placeholders=new SQL_Driver::Placeholder[hash_count];
1.204 paf 1270: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1271: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1272: return hash_count;
1273: }
1274:
1275: // not static, used elsewhere
1276: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1277: SQL_Driver::Placeholder* ph=placeholders;
1278: for(int i=0; i<placeholder_count; i++, ph++)
1279: if(ph->were_updated) {
1280: Value* value;
1281: if(ph->is_null)
1.248 misha 1282: value=VVoid::get();
1.204 paf 1283: else
1.256 misha 1284: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1285: hash.put(ph->name, value);
1286: }
1287: }
1288:
1.182 paf 1289: static void _sql(Request& r, MethodParams& params) {
1290: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1291:
1.204 paf 1292: HashStringValue* bind=0;
1.244 misha 1293: ulong limit=SQL_NO_LIMIT;
1.100 parser 1294: ulong offset=0;
1.281 misha 1295: if(params.count()>1)
1.288 misha 1296: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1297: int valid_options=0;
1298: if(Value* vbind=options->get(sql_bind_name)) {
1299: valid_options++;
1300: bind=vbind->get_hash();
1301: }
1302: if(Value* vlimit=options->get(sql_limit_name)) {
1303: valid_options++;
1304: limit=(ulong)r.process_to_value(*vlimit).as_double();
1305: }
1306: if(Value* voffset=options->get(sql_offset_name)) {
1307: valid_options++;
1308: offset=(ulong)r.process_to_value(*voffset).as_double();
1309: }
1310: if(valid_options!=options->count())
1311: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1312: }
1.49 paf 1313:
1.204 paf 1314: SQL_Driver::Placeholder* placeholders=0;
1315: uint placeholders_count=0;
1316: if(bind)
1317: placeholders_count=marshal_binds(*bind, placeholders);
1318:
1.182 paf 1319: Temp_lang temp_lang(r, String::L_SQL);
1320: const String& statement_string=r.process_to_string(statement);
1.262 misha 1321: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1322:
1.182 paf 1323: Table_sql_event_handlers handlers;
1.294 moko 1324:
1.182 paf 1325: r.connection()->query(
1.203 paf 1326: statement_cstr,
1.208 paf 1327: placeholders_count, placeholders,
1.203 paf 1328: offset, limit,
1.160 paf 1329: handlers,
1330: statement_string);
1.135 paf 1331:
1.204 paf 1332: if(bind)
1333: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1334:
1.182 paf 1335: Table& result=
1336: handlers.table?*handlers.table: // query resulted in table? return it
1337: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1338:
1339: // replace any previous table value
1.182 paf 1340: GET_SELF(r, VTable).set_table(result);
1.49 paf 1341: }
1342:
1.233 misha 1343: static void _columns(Request& r, MethodParams& params) {
1344: const String* column_column_name;
1345: if(params.count()>0)
1346: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1347: else
1348: column_column_name=new String("column");
1.88 parser 1349:
1.182 paf 1350: Table::columns_type result_columns(new ArrayString);
1.233 misha 1351: *result_columns+=column_column_name;
1.182 paf 1352: Table& result_table=*new Table(result_columns);
1.88 parser 1353:
1.182 paf 1354: Table& source_table=GET_SELF(r, VTable).table();
1355: if(Table::columns_type source_columns=source_table.columns()) {
1356: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1357: Table::element_type result_row(new ArrayString);
1358: *result_row+=i.next();
1359: result_table+=result_row;
1.88 parser 1360: }
1361: }
1362:
1.182 paf 1363: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1364: }
1365:
1.182 paf 1366: static void _select(Request& r, MethodParams& params) {
1.231 misha 1367: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1368:
1.182 paf 1369: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1370:
1.277 moko 1371: int limit=source_table.count();
1.282 misha 1372: int offset=0;
1373: bool reverse=false;
1.278 moko 1374:
1.281 misha 1375: if(params.count()>1)
1376: if(HashStringValue* options=params.as_hash(1)) {
1377: int valid_options=0;
1378: if(Value* vlimit=options->get(sql_limit_name)) {
1379: valid_options++;
1380: limit=r.process_to_value(*vlimit).as_int();
1381: }
1382: if(Value* voffset=options->get(sql_offset_name)) {
1383: valid_options++;
1384: offset=r.process_to_value(*voffset).as_int();
1385: }
1386: if(Value* vreverse=options->get(table_reverse_name)) {
1387: valid_options++;
1388: reverse=r.process_to_value(*vreverse).as_bool();
1389: }
1390: if(valid_options!=options->count())
1.288 misha 1391: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1392: }
1393:
1394: Table& result_table=*new Table(source_table.columns());
1.277 moko 1395:
1.283 misha 1396: size_t size=source_table.count();
1397: if(offset<0)
1398: offset+=size;
1.284 misha 1399: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1400: size_t saved_current=source_table.current();
1401: size_t appended=0;
1402:
1403: if(reverse){
1404: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1405: source_table.set_current(row);
1406:
1407: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1408:
1409: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1410: result_table+=source_table[row];
1411: if(row==0) break;
1412: }
1413: } else {
1414: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1415: source_table.set_current(row);
1.148 paf 1416:
1.282 misha 1417: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1418:
1.282 misha 1419: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1420: result_table+=source_table[row];
1421: }
1.277 moko 1422: }
1.282 misha 1423: source_table.set_current(saved_current);
1.148 paf 1424: }
1425:
1.182 paf 1426: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1427: }
1428:
1.66 paf 1429: // constructor
1430:
1.182 paf 1431: MTable::MTable(): Methoded("table") {
1.142 paf 1432: // ^table::create{data}
1433: // ^table::create[nameless]{data}
1434: // ^table::create[table]
1.236 misha 1435: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1436: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1437: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1438:
1.142 paf 1439: // ^table::load[file]
1440: // ^table::load[nameless;file]
1.168 paf 1441: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1442:
1443: // ^table.save[file]
1444: // ^table.save[nameless;file]
1.188 paf 1445: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1446:
1.224 misha 1447: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1448:
1.297 moko 1449: // ^table.csv-string[]
1450: // ^table.csv-string[nameless]
1451: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1452: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1453:
1.6 paf 1454: // ^table.count[]
1.280 misha 1455: // ^table.count[rows]
1456: // ^table.count[columns]
1457: // ^table.count[cells]
1458: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1459:
1460: // ^table.line[]
1.66 paf 1461: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1462:
1.10 paf 1463: // ^table.offset[]
1.133 paf 1464: // ^table.offset(offset)
1465: // ^table.offset[cur|set](offset)
1466: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1467:
1.10 paf 1468: // ^table.menu{code}
1469: // ^table.menu{code}[delim]
1.66 paf 1470: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1471:
1.239 misha 1472: // ^table.hash[key field name]
1473: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1474: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1475:
1.102 parser 1476: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1477: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1478: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1479:
1.36 paf 1480: // ^table.locate[field;value]
1.176 paf 1481: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1482:
1483: // ^table.flip[]
1.66 paf 1484: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1485:
1.293 misha 1486: // ^table.foreach[row-num;value]{code}
1487: // ^table.foreach[row-num;value]{code}[delim]
1488: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1489:
1.306 moko 1490: // ^table.append{row{tab}data}
1.66 paf 1491: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1492:
1.306 moko 1493: // ^table.insert{row{tab}data} before current row
1494: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1495:
1.307 moko 1496: // ^table.delete[] current row
1497: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1498:
1.157 paf 1499: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1500: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1501:
1502:
1.239 misha 1503: // ^table::sql[query]
1504: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1505: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1506:
1.239 misha 1507: // ^table.columns[[column name]]
1.233 misha 1508: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1509:
1510: // ^table.select(expression) = table
1.277 moko 1511: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1512: }
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