Annotation of parser3/src/classes/table.C, revision 1.322
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:
1.322 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.321 2016/09/07 11:56:20 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:
1.322 ! moko 135: struct lsplit_sresult {
! 136: String* piece;
! 137: char delim;
! 138:
! 139: lsplit_sresult() : piece(0), delim(0){}
! 140:
! 141: operator bool() { return piece!=0; }
! 142:
! 143: void append(String *str){
! 144: if(piece)
! 145: *piece << *str;
! 146: else
! 147: piece = str;
! 148: }
! 149: };
! 150:
! 151: class StringSplitHelper : public String {
! 152: public:
! 153: char* base;
! 154:
! 155: StringSplitHelper(String astring) : String(astring), base(cstrm()) {}
! 156:
! 157: bool check_lang(const char *pos){
! 158: return langs.check_lang(L_AS_IS, pos-base, 1);
! 159: }
! 160:
! 161: String *extract(char *pos){
! 162: String *result=new String;
! 163: // first: their langs
! 164: result->langs.append(result->body, langs, pos-base, strlen(pos));
! 165: // next: letters themselves
! 166: result->body=Body(pos);
! 167: return result;
! 168: }
! 169: };
! 170:
! 171: inline lsplit_sresult lsplit(char* *string_ref, const char* delims, StringSplitHelper& helper) {
! 172: lsplit_sresult result;
! 173: if(char *pos=*string_ref) {
! 174: while(char* v=strpbrk(pos, delims)) {
! 175: if(helper.check_lang(v)){
! 176: result.delim=*v;
! 177: *v=0;
! 178: result.piece=helper.extract(*string_ref);
! 179: *string_ref=v+1;
! 180: return result;
! 181: }
! 182: pos=v+1;
! 183: }
! 184: result.piece=helper.extract(*string_ref);
! 185: *string_ref=0;
! 186: }
! 187: return result;
! 188: }
! 189:
! 190: static lsplit_sresult lsplit(char** string_ref, const char* delims, char encloser, StringSplitHelper& helper) {
! 191: lsplit_sresult result;
! 192:
! 193: if(char *pos=*string_ref) {
! 194: if(encloser && *pos==encloser && helper.check_lang(pos)) {
! 195: *string_ref=++pos;
! 196:
! 197: // we are enclosed, searching for second encloser
! 198: while(1) {
! 199: if(char* v=strchr(pos, encloser)){
! 200: if(helper.check_lang(v)){
! 201: *(v++)=0;
! 202: result.append(helper.extract(*string_ref));
! 203: if(*v==encloser && helper.check_lang(v)){ // double-encloser stands for encloser
! 204: *string_ref=v+1;
! 205: } else {
! 206: *string_ref=pos=v;
! 207: break;
! 208: }
! 209: }
! 210: pos=v+1;
! 211: }{
! 212: result.append(helper.extract(*string_ref));
! 213: *string_ref=0;
! 214: return result;
! 215: }
! 216: }
! 217:
! 218: // we are no longer enclosed, searching for delimiter
! 219: while(char* v=strpbrk(pos, delims)) {
! 220: if(helper.check_lang(v)){
! 221: result.delim=*v;
! 222: if(v>*string_ref){
! 223: *v=0;
! 224: result.append(helper.extract(*string_ref));
! 225: }
! 226: *string_ref=v+1;
! 227: return result;
! 228: }
! 229: pos=v+1;
! 230: }
! 231: result.append(helper.extract(*string_ref));
! 232: *string_ref=0;
! 233: } else
! 234: return lsplit(string_ref, delims, helper);
! 235: }
! 236: return result;
! 237: }
! 238:
! 239: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
! 240: if(*data_ref) {
! 241: while(**data_ref == '\n' && helper.check_lang(*data_ref))
! 242: (*data_ref)++;
! 243: }
! 244: }
! 245:
1.182 paf 246: static void _create(Request& r, MethodParams& params) {
1.157 paf 247: // clone/copy part?
1.182 paf 248: if(Table *source=params[0].get_table()) {
1.268 misha 249: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 250: if(params.count()>2)
251: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 252: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 253: return;
254: }
1.142 paf 255:
1.236 misha 256: size_t data_param_index=0;
257: bool nameless=false;
258:
259: if(params.count()>1) {
260: if(params[0].is_string()){ // can be nameless only
261: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
262: if(snameless!="nameless")
1.318 moko 263: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 264: nameless=true;
265: data_param_index++;
266: }
267: }
268:
269: HashStringValue *options=0;
1.319 moko 270: TableControlChars control_chars;
1.236 misha 271:
272: size_t options_param_index=data_param_index+1;
1.322 ! moko 273: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.236 misha 274: // cloning, so that we could change
275: options=new HashStringValue(*options);
1.319 moko 276: control_chars.load(*options);
1.236 misha 277: }
278:
279: // data
1.182 paf 280: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.322 ! moko 281: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
! 282: char *data=sdata.base;
1.44 paf 283:
284: // parse columns
1.182 paf 285: Table::columns_type columns;
1.322 ! moko 286: if(nameless) {
! 287: columns=0; // nameless
1.21 paf 288: } else {
1.322 ! moko 289: columns=new ArrayString;
! 290: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
! 291: *columns+=sr.piece;
! 292: if(sr.delim=='\n')
! 293: break;
1.182 paf 294: }
1.44 paf 295: }
1.322 ! moko 296:
! 297: Table& table=*new Table(columns);
! 298: int columns_count=columns ? columns->count(): 0;
1.44 paf 299:
300: // parse cells
1.322 ! moko 301: Table::element_type row(new ArrayString(columns_count));
! 302: skip_clean_empty_lines(&data, sdata);
! 303: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
! 304: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
! 305: break;
! 306: *row+=sr.piece;
! 307: if(sr.delim=='\n') {
! 308: table+=row;
! 309: row=new ArrayString(columns_count);
! 310: skip_clean_empty_lines(&data, sdata);
! 311: }
! 312: }
! 313: // last line [if without \n]
! 314: if(row->count())
1.182 paf 315: table+=row;
1.322 ! moko 316:
1.44 paf 317: // replace any previous table value
1.182 paf 318: GET_SELF(r, VTable).set_table(table);
1.44 paf 319: }
320:
1.187 paf 321: struct lsplit_result {
322: char* piece;
323: char delim;
324:
1.321 moko 325: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 326: operator bool() { return piece!=0; }
327: };
328:
1.321 moko 329: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
330: lsplit_result result(*string_ref);
331: if(result.piece) {
332: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 333: result.delim=*v;
334: *v=0;
1.321 moko 335: *string_ref=v+1;
1.187 paf 336: return result;
337: }
1.322 ! moko 338: *string_ref=0;
1.273 misha 339: }
340: return result;
1.187 paf 341: }
342:
1.320 moko 343: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 344: lsplit_result result(*string_ref);
1.187 paf 345:
1.321 moko 346: if(result.piece) {
347: if(encloser && *result.piece==encloser) {
348: result.piece++;
1.187 paf 349:
1.321 moko 350: char c;
1.187 paf 351: char *read;
352: char *write;
1.321 moko 353: write=read=result.piece;
354:
1.290 moko 355: // we are enclosed, searching for second encloser
356: while(c=*read++) {
1.187 paf 357: if(c==encloser) {
1.290 moko 358: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 359: read++;
1.290 moko 360: else
361: break; // note: skipping encloser
1.187 paf 362: }
363: *write++=c;
364: }
1.321 moko 365:
1.290 moko 366: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
367: while(c=*read++) {
1.320 moko 368: if(c==delims[0] || c==delims[1]) {
1.290 moko 369: result.delim=c;
370: break;
371: } else if(c!=encloser)
372: *write++=c;
373: }
1.321 moko 374:
1.187 paf 375: *write=0; // terminate
1.321 moko 376: *string_ref=c ? read : 0;
1.187 paf 377: return result;
378: } else
1.320 moko 379: return lsplit(string_ref, delims);
1.273 misha 380: }
381: return result;
1.187 paf 382: }
383:
384: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 ! moko 385: while(*data_ref) {
! 386: if(**data_ref == '\n'){
! 387: (*data_ref)++;
! 388: } else {
! 389: if(**data_ref == '#' )
! 390: /*nowhere=*/getrow(data_ref);
! 391: else
! 392: break;
1.187 paf 393: }
394: }
395: }
396:
1.273 misha 397: static void skip_empty_lines( char** data_ref ) {
1.322 ! moko 398: if(*data_ref) {
! 399: while(**data_ref == '\n')
! 400: (*data_ref)++;
1.273 misha 401: }
402: }
403:
404: typedef void (*Skip_lines_action)(char** data_ref);
405:
1.182 paf 406: static void _load(Request& r, MethodParams& params) {
1.232 misha 407: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 408: int filename_param_index=0;
409: bool nameless=first_param=="nameless";
410: if(nameless)
411: filename_param_index++;
1.182 paf 412: size_t options_param_index=filename_param_index+1;
1.186 paf 413:
414: HashStringValue *options=0;
1.319 moko 415: TableControlChars control_chars;
1.186 paf 416: if(options_param_index<params.count()
1.288 misha 417: && (options=params.as_hash(options_param_index))) {
1.186 paf 418: // cloning, so that we could change [to simplify checks on params inside file_read_text
419: options=new HashStringValue(*options);
1.319 moko 420: control_chars.load(*options);
1.186 paf 421: }
422:
1.44 paf 423: // loading text
1.321 moko 424: char *data=file_load_text(r, r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)), true, options);
1.44 paf 425:
1.319 moko 426: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 427:
1.1 paf 428: // parse columns
1.182 paf 429: Table::columns_type columns;
1.168 paf 430: if(nameless) {
1.322 ! moko 431: columns=0; // nameless
1.1 paf 432: } else {
1.322 ! moko 433: columns=new ArrayString;
1.1 paf 434:
1.273 misha 435: skip_lines_action(&data);
1.320 moko 436: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 437: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 438: if(sr.delim=='\n')
439: break;
1.139 paf 440: }
1.1 paf 441: }
1.187 paf 442:
443: Table& table=*new Table(columns);
1.322 ! moko 444: int columns_count=columns ? columns->count(): 0;
1.1 paf 445:
446: // parse cells
1.218 paf 447: Table::element_type row(new ArrayString(columns_count));
1.273 misha 448: skip_lines_action(&data);
1.320 moko 449: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 450: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
451: break;
1.256 misha 452: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 453: if(sr.delim=='\n') {
454: table+=row;
1.218 paf 455: row=new ArrayString(columns_count);
1.273 misha 456: skip_lines_action(&data);
1.1 paf 457: }
1.187 paf 458: }
459: // last line [if without \n]
460: if(row->count())
1.1 paf 461: table+=row;
1.187 paf 462:
1.1 paf 463: // replace any previous table value
1.182 paf 464: GET_SELF(r, VTable).set_table(table);
1.1 paf 465: }
1.2 paf 466:
1.297 moko 467: #ifdef USE_STRINGSTREAM
1.269 misha 468: #include "gc_allocator.h"
469:
470: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
471: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
472:
1.298 moko 473: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 474: if(from){
1.257 misha 475: to<<encloser;
1.188 paf 476: // while we have 'encloser'...
1.189 paf 477: size_t pos_after=0;
1.297 moko 478: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 479: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 480: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 481: to<<encloser; // doubling encloser
1.188 paf 482: }
483: // last piece
1.297 moko 484: size_t from_length=from->length();
1.188 paf 485: if(pos_after<from_length)
1.297 moko 486: to<<from->mid(pos_after, from_length).cstr();
487: to<<encloser;
488: } else {
489: to<<encloser<<encloser;
490: }
491: }
492:
1.319 moko 493: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 494: if(output_column_names) {
495: if(table.columns()) { // named table
1.319 moko 496: if(control_chars.encloser){
1.297 moko 497: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 498: enclose( result, i.next(), control_chars.encloser );
1.297 moko 499: if(i.has_next())
1.319 moko 500: result<<control_chars.separator;
1.297 moko 501: }
502: } else {
503: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
504: result<<i.next()->cstr();
505: if(i.has_next())
1.319 moko 506: result<<control_chars.separator;
1.297 moko 507: }
508: }
509: } else { // nameless table [we were asked to output column names]
510: if(int lsize=table.count()?table[0]->count():0)
511: for(int column=0; column<lsize; column++) {
1.319 moko 512: if(control_chars.encloser) {
513: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 514: } else {
515: result<<column;
516: }
517: if(column<lsize-1){
1.319 moko 518: result<<control_chars.separator;
1.297 moko 519: }
520: }
521: else
522: result<<"empty nameless table";
523: }
524: result<<'\n';
525: }
1.188 paf 526:
1.297 moko 527: // process data lines
528: Array_iterator<ArrayString*> i(table);
1.319 moko 529: if(control_chars.encloser){
1.297 moko 530: while(i.has_next()) {
531: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 532: enclose( result, c.next(), control_chars.encloser );
1.297 moko 533: if(c.has_next())
1.319 moko 534: result<<control_chars.separator;
1.297 moko 535: }
536: result<<'\n';
537: }
538: } else {
539: while(i.has_next()) {
540: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
541: result<<c.next()->cstr();
542: if(c.has_next())
1.319 moko 543: result<<control_chars.separator;
1.297 moko 544: }
545: result<<'\n';
546: }
547: }
1.188 paf 548: }
549:
1.241 misha 550: #else
551:
1.298 moko 552: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 553: if(from){
1.257 misha 554: to<<*sencloser;
1.224 misha 555: // while we have 'encloser'...
556: size_t pos_after=0;
1.297 moko 557: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 558: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 559: to<<from->mid(pos_after, pos_before);
1.257 misha 560: to<<*sencloser; // doubling encloser
1.224 misha 561: }
562: // last piece
1.297 moko 563: size_t from_length=from->length();
1.224 misha 564: if(pos_after<from_length)
1.297 moko 565: to<<from->mid(pos_after, from_length);
1.257 misha 566: to<<*sencloser;
1.297 moko 567: } else {
568: to<<*sencloser<<*sencloser;
569: }
1.224 misha 570: }
571:
1.319 moko 572: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 573: if(output_column_names) {
574: if(table.columns()) { // named table
1.319 moko 575: if(control_chars.encloser) {
1.297 moko 576: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 577: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 578: if(i.has_next())
1.319 moko 579: result<<*control_chars.sseparator;
1.297 moko 580: }
581: } else {
582: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
583: result<<*i.next();
584: if(i.has_next())
1.319 moko 585: result<<*control_chars.sseparator;
1.297 moko 586: }
587: }
588: } else { // nameless table [we were asked to output column names]
589: if(int lsize=table.count()?table[0]->count():0)
590: for(int column=0; column<lsize; column++) {
1.319 moko 591: if(control_chars.encloser) {
592: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 593: } else {
594: result<<String::Body::Format(column);
595: }
596: if(column<lsize-1){
1.319 moko 597: result<<*control_chars.sseparator;
1.298 moko 598: }
1.297 moko 599: }
600: else
601: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
602: }
603: result.append_know_length("\n", 1, String::L_CLEAN);
604: }
605:
606: // data lines
607: Array_iterator<ArrayString*> i(table);
1.319 moko 608: if(control_chars.encloser){
1.297 moko 609: while(i.has_next()) {
610: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 611: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 612: if(c.has_next())
1.319 moko 613: result<<*control_chars.sseparator;
1.297 moko 614: }
615: result.append_know_length("\n", 1, String::L_CLEAN);
616: }
617: } else {
618: while(i.has_next()) {
619: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
620: result<<*c.next();
621: if(c.has_next())
1.319 moko 622: result<<*control_chars.sseparator;
1.297 moko 623: }
624: result.append_know_length("\n", 1, String::L_CLEAN);
625: }
626: }
627: }
1.257 misha 628: #endif // don't use stringstream
1.241 misha 629:
1.297 moko 630:
1.241 misha 631: static void _save(Request& r, MethodParams& params) {
1.237 misha 632: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 633: size_t param_index=1;
634:
635: bool do_append=false;
636: bool output_column_names=true;
637:
638: // mode?
639: if(first_arg=="append")
640: do_append=true;
641: else if(first_arg=="nameless")
642: output_column_names=false;
643: else
644: --param_index;
645:
1.232 misha 646: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 647: String file_spec=r.absolute(file_name);
648:
649: if(do_append && file_exist(file_spec))
650: output_column_names=false;
1.188 paf 651:
1.319 moko 652: TableControlChars control_chars;
1.281 misha 653: if(param_index<params.count())
1.288 misha 654: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 655: int valid_options=control_chars.load(*options);
1.281 misha 656: if(valid_options!=options->count())
657: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 658: }
1.281 misha 659:
1.188 paf 660: if(param_index<params.count())
1.318 moko 661: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 662:
1.182 paf 663: Table& table=GET_SELF(r, VTable).table();
1.31 paf 664:
1.297 moko 665: #ifdef USE_STRINGSTREAM
1.269 misha 666: pa_stringstream ost(std::stringstream::out);
1.257 misha 667:
1.319 moko 668: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 669:
670: // write
1.269 misha 671: pa_string data=ost.str();
1.257 misha 672: const char* data_cstr=data.c_str();
1.267 misha 673: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 674: #else
1.257 misha 675: String sdata;
1.224 misha 676:
1.319 moko 677: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 678:
679: // write
1.257 misha 680: const char* data_cstr=sdata.cstr();
1.297 moko 681: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 682: if(*data_cstr) // not empty (when empty it's not heap memory)
683: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 684: #endif
685: }
686:
687: static void _csv_string(Request& r, MethodParams& params) {
688: bool output_column_names=true;
689: size_t param_index=0;
690: if(params.count()>0 && params[0].is_string()) {
691: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
692: output_column_names=false;
693: param_index++;
694: } else {
1.318 moko 695: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 696: }
1.224 misha 697: }
1.240 misha 698:
1.319 moko 699: TableControlChars control_chars;
1.297 moko 700: if(param_index<params.count())
701: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 702: int valid_options=control_chars.load(*options);
1.297 moko 703: if(valid_options!=options->count())
704: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
705: }
706:
707: Table& table=GET_SELF(r, VTable).table();
708:
709: #ifdef USE_STRINGSTREAM
710: pa_stringstream ost(std::stringstream::out);
711:
1.319 moko 712: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 713:
714: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
715: #else
716: String sdata;
717:
1.319 moko 718: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 719:
720: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
721: #endif
1.224 misha 722: }
723:
1.280 misha 724: static void _count(Request& r, MethodParams& params) {
725: Table& table=GET_SELF(r, VTable).table();
726: size_t result=0;
727: if(params.count()) {
728: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
729: if(param == "columns")
1.310 moko 730: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 731: else if(param == "cells")
732: result = table.count() ? table[table.current()]->count() : 0;
733: else if(param == "rows") // synonim for ^table.count[]
734: result = table.count();
735: else
736: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
737: } else
738: result = table.count();
739:
1.182 paf 740: r.write_no_lang(*new VInt(result));
1.6 paf 741: }
742:
1.182 paf 743: static void _line(Request& r, MethodParams&) {
744: int result=1+GET_SELF(r, VTable).table().current();
745: r.write_no_lang(*new VInt(result));
1.6 paf 746: }
747:
1.182 paf 748: static void _offset(Request& r, MethodParams& params) {
749: Table& table=GET_SELF(r, VTable).table();
750: if(params.count()) {
1.133 paf 751: bool absolute=false;
1.182 paf 752: if(params.count()>1) {
753: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 754: if(whence=="cur")
1.134 paf 755: absolute=false;
1.133 paf 756: else if(whence=="set")
1.134 paf 757: absolute=true;
1.133 paf 758: else
1.318 moko 759: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 760: }
1.133 paf 761:
1.211 paf 762: int offset=params.as_int(params.count()-1, "offset must be expression", r);
763: table.offset(absolute, offset);
1.151 paf 764: } else
1.182 paf 765: r.write_no_lang(*new VInt(table.current()));
1.6 paf 766: }
767:
1.182 paf 768: static void _menu(Request& r, MethodParams& params) {
1.263 misha 769: InCycle temp(r);
1.221 paf 770:
1.182 paf 771: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 772:
1.182 paf 773: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 774:
1.182 paf 775: Table& table=GET_SELF(r, VTable).table();
1.293 misha 776: size_t saved_current=table.current();
1.7 paf 777:
1.251 misha 778: if(delim_maybe_code) { // delimiter set
1.250 misha 779: bool need_delim=false;
1.316 moko 780: for(size_t row=0; row<table.count(); row++) {
1.250 misha 781: table.set_current(row);
782:
783: StringOrValue sv_processed=r.process(body_code);
784: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
785:
786: const String* s_processed=sv_processed.get_string();
1.251 misha 787: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 788: if(need_delim) // need delim & iteration produced string?
789: r.write_pass_lang(r.process(*delim_maybe_code));
790: else
791: need_delim=true;
792: }
793:
794: r.write_pass_lang(sv_processed);
1.242 misha 795:
1.250 misha 796: if(lskip==Request::SKIP_BREAK)
797: break;
798: }
799: } else {
1.316 moko 800: for(size_t row=0; row<table.count(); row++) {
1.250 misha 801: table.set_current(row);
802:
803: r.process_write(body_code);
804: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
805:
806: if(lskip==Request::SKIP_BREAK)
807: break;
1.7 paf 808: }
809: }
1.99 parser 810: table.set_current(saved_current);
1.7 paf 811: }
812:
1.110 parser 813: #ifndef DOXYGEN
1.74 paf 814: struct Row_info {
1.166 paf 815: Request *r;
1.74 paf 816: Table *table;
1.182 paf 817: Value* key_code;
818: size_t key_field;
819: Array<int>* value_fields;
1.315 moko 820: Value* value_code;
1.182 paf 821: HashStringValue* hash;
1.174 paf 822: Table2hash_distint distinct;
1.182 paf 823: size_t row;
1.227 misha 824: Table2hash_value_type value_type;
1.74 paf 825: };
1.110 parser 826: #endif
1.182 paf 827: static void table_row_to_hash(Table::element_type row, Row_info *info) {
828: const String* key;
829: if(info->key_code) {
830: info->table->set_current(info->row++); // change context row
831: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 832: key=&sv_processed.as_string();
1.227 misha 833: } else {
1.182 paf 834: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 835: }
1.166 paf 836:
837: if(!key)
838: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 839:
1.243 misha 840: bool exist=false;
841: switch(info->value_type) {
842: case C_STRING: {
1.317 moko 843: if(info->value_fields->count()){
844: size_t index=info->value_fields->get(0);
845: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
846: } else {
847: exist=info->hash->put_dont_replace(*key, VString::empty());
848: }
1.243 misha 849: break;
1.227 misha 850: }
1.243 misha 851: case C_HASH: {
1.182 paf 852: VHash* vhash=new VHash;
853: HashStringValue& hash=vhash->hash();
854: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
855: size_t value_field=i.next();
856: if(value_field<row->count())
1.314 moko 857: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 858: }
859:
1.227 misha 860: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 861: break;
1.174 paf 862: }
1.243 misha 863: case C_TABLE: {
864: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 865: Table* table;
1.227 misha 866: if(vtable) {
1.243 misha 867: if(info->distinct==D_ILLEGAL) {
868: exist=true;
869: break;
870: }
1.174 paf 871: table=vtable->get_table();
1.227 misha 872: } else {
1.174 paf 873: // no? creating table of same structure as source
1.179 paf 874: Table::Action_options table_options(0, 0);
1.182 paf 875: table=new Table(*info->table, table_options/*no rows, just structure*/);
876: info->hash->put(*key, new VTable(table));
1.174 paf 877: }
1.308 moko 878: Table::element_type row_copy(new ArrayString(row->count()));
879: row_copy->append(*row);
880: *table+=row_copy;
1.243 misha 881: break;
1.174 paf 882: }
1.315 moko 883: case C_CODE: {
884: if(!info->key_code)
885: info->table->set_current(info->row++); // change context row
886: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code).as_value());
887: break;
888: }
1.74 paf 889: }
1.227 misha 890: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 891: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 892: }
1.235 misha 893:
894: Table2hash_value_type get_value_type(Value& vvalue_type){
895: if(vvalue_type.is_string()) {
896: const String& svalue_type=*vvalue_type.get_string();
897: if(svalue_type == "table"){
898: return C_TABLE;
899: } else if (svalue_type == "string") {
900: return C_STRING;
901: } else if (svalue_type == "hash") {
902: return C_HASH;
903: } else {
1.314 moko 904: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 905: }
906: } else {
1.314 moko 907: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 908: }
909: }
910:
1.315 moko 911: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
912: if(vdistinct.is_string()) {
913: const String& sdistinct=*vdistinct.get_string();
914: if(sdistinct!="tables")
915: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
916: value_type=C_TABLE;
917: return D_FIRST;
918: }
919: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
920: }
921:
1.182 paf 922: static void _hash(Request& r, MethodParams& params) {
923: Table& self_table=GET_SELF(r, VTable).table();
924: VHash& result=*new VHash;
1.238 misha 925: if(Table::columns_type columns=self_table.columns()){
1.182 paf 926: if(columns->count()>0) {
1.174 paf 927: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 928: Table2hash_value_type value_type=C_HASH;
1.182 paf 929: int param_index=params.count()-1;
1.166 paf 930: if(param_index>0) {
1.315 moko 931:
932: if(params[1].get_junction())
933: value_type=C_CODE;
934:
935: 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 936: --param_index;
937: int valid_options=0;
1.238 misha 938: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 939: valid_options++;
1.315 moko 940: distinct=get_distinct(r.process_to_value(*vdistinct_code), value_type);
1.166 paf 941: }
1.238 misha 942: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
943: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 944: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 945: if(value_type==C_CODE)
946: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 947: valid_options++;
948: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
949: }
1.226 misha 950:
1.182 paf 951: if(valid_options!=options->count())
1.272 misha 952: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 953: }
954: }
1.238 misha 955:
1.315 moko 956: if(param_index==2) // options were specified but not as hash
1.289 misha 957: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
958:
1.182 paf 959: Array<int> value_fields;
1.315 moko 960: Value* value_code=0;
961:
1.238 misha 962: if(param_index==0){ // list of columns wasn't specified
963: if(value_type==C_STRING) // $.type[string]
1.314 moko 964: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 965:
966: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
967: value_fields+=i;
968:
1.315 moko 969: } else { // list of columns or code was specified
1.227 misha 970: if(value_type==C_TABLE)
1.314 moko 971: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 972:
1.315 moko 973: Value& value_fields_param=params[1];
1.317 moko 974: if(value_fields_param.get_junction()){ // code specified
1.315 moko 975: value_code=&value_fields_param;
976: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 977: const String &field_name=*value_fields_param.get_string();
978: if(!field_name.is_empty())
979: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 980: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
981: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
982: const String& value_field_name =*i.next()->get(0);
983: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 984: }
985: } else
1.315 moko 986: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 987: }
1.74 paf 988:
1.227 misha 989: if(value_type==C_STRING && value_fields.count()!=1)
1.314 moko 990: throw Exception(PARSER_RUNTIME, 0, "you can specify only one value field with option $.type[string]");
1.182 paf 991:
992: {
993: Value* key_param=¶ms[0];
1.193 paf 994: Row_info info={
995: &r,
996: &self_table,
1.315 moko 997: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 998: /*key_field=*/0/*filled below*/,
1.193 paf 999: &value_fields,
1.315 moko 1000: value_code,
1.193 paf 1001: &result.hash(),
1002: distinct,
1.227 misha 1003: /*row=*/0,
1004: value_type
1.193 paf 1005: };
1.314 moko 1006: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 1007:
1008: int saved_current=self_table.current();
1009: self_table.for_each(table_row_to_hash, &info);
1010: self_table.set_current(saved_current);
1.207 paf 1011:
1012: result.extract_default();
1.182 paf 1013: }
1.74 paf 1014: }
1.238 misha 1015: }
1.97 parser 1016: r.write_no_lang(result);
1.74 paf 1017: }
1018:
1.110 parser 1019: #ifndef DOXYGEN
1.78 paf 1020: struct Table_seq_item {
1.182 paf 1021: ArrayString* row;
1.34 paf 1022: union {
1.182 paf 1023: const char *c_str;
1.34 paf 1024: double d;
1025: } value;
1.32 paf 1026: };
1.110 parser 1027: #endif
1.34 paf 1028: static int sort_cmp_string(const void *a, const void *b) {
1029: return strcmp(
1.78 paf 1030: static_cast<const Table_seq_item *>(a)->value.c_str,
1031: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1032: );
1033: }
1034: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1035: double va=static_cast<const Table_seq_item *>(a)->value.d;
1036: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1037: if(va<vb)
1038: return -1;
1039: else if(va>vb)
1040: return +1;
1041: else
1042: return 0;
1043: }
1.182 paf 1044: static void _sort(Request& r, MethodParams& params) {
1045: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1046:
1.182 paf 1047: bool reverse=params.count()>1/*..[desc|asc|]*/?
1048: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 1049: false; // default=asc
1.32 paf 1050:
1.182 paf 1051: Table& old_table=GET_SELF(r, VTable).table();
1052: Table& new_table=*new Table(old_table.columns());
1.34 paf 1053:
1.182 paf 1054: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 1055: int i;
1056:
1057: // calculate key values
1058: bool key_values_are_strings=true;
1.182 paf 1059: int old_count=old_table.count();
1060: for(i=0; i<old_count; i++) {
1.101 parser 1061: old_table.set_current(i);
1.32 paf 1062: // calculate key value
1.182 paf 1063: seq[i].row=old_table[i];
1.287 moko 1064: Value& value=r.process_to_value(key_maker);
1.34 paf 1065: if(i==0) // determining key values type by first one
1066: key_values_are_strings=value.is_string();
1067:
1068: if(key_values_are_strings)
1069: seq[i].value.c_str=value.as_string().cstr();
1070: else
1.287 moko 1071: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1072: }
1.265 misha 1073:
1074: // @todo: handle this elsewhere
1075: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1076: for(i=0; i<old_count; i++)
1077: if(*seq[i].value.c_str)
1078: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
1079: }
1080:
1.266 misha 1081: // sort keys
1.295 moko 1082: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1083:
1.34 paf 1084: // reorder table as they require in 'seq'
1.182 paf 1085: for(i=0; i<old_count; i++)
1086: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1087:
1088: delete[] seq;
1.32 paf 1089:
1.116 parser 1090: // replace any previous table value
1.182 paf 1091: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1092: }
1093:
1.176 paf 1094: #ifndef DOXYGEN
1.182 paf 1095: struct Expression_is_true_info {
1.176 paf 1096: Request* r;
1097: Value* expression_code;
1098: };
1099: #endif
1.275 misha 1100:
1.191 paf 1101: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1102: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1103: }
1.275 misha 1104:
1105: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1106: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1107: Table::Action_options o=get_action_options(r, params, 1, table);
1108: if(params.count()>2)
1109: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1110: Expression_is_true_info info={&r, &expression_code};
1111: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1112: }
1.275 misha 1113:
1114: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1115: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1116: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1117: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1118: return table.locate(name, value, o);
1119: }
1.275 misha 1120:
1.182 paf 1121: static void _locate(Request& r, MethodParams& params) {
1122: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1123:
1.291 moko 1124: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1125: _locate_expression(table, r, params) :
1126: _locate_name_value(table, r, params);
1.249 misha 1127: r.write_no_lang(VBool::get(result));
1.145 paf 1128: }
1.182 paf 1129:
1130:
1.191 paf 1131: static void _flip(Request& r, MethodParams&) {
1.182 paf 1132: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1133: Table& new_table=*new Table(0);
1.182 paf 1134: if(size_t old_count=old_table.count())
1.310 moko 1135: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1136: for(size_t column=0; column<old_cols; column++) {
1137: Table::element_type new_row(new ArrayString(old_count));
1138: for(size_t i=0; i<old_count; i++) {
1139: Table::element_type old_row=old_table[i];
1140: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1141: }
1.182 paf 1142: new_table+=new_row;
1.39 paf 1143: }
1144:
1.182 paf 1145: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1146: }
1147:
1.293 misha 1148: static void _foreach(Request& r, MethodParams& params) {
1149: InCycle temp(r);
1150:
1151: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1152: const String& value_name=params.as_string(1, "value-var name must be string");
1153:
1154: Value& body_code=params.as_junction(2, "body must be code");
1155:
1156: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1157:
1158: Table& table=GET_SELF(r, VTable).table();
1159: size_t saved_current=table.current();
1160:
1161: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1162: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1163:
1164: Value* var_context=r.get_method_frame()->caller();
1165:
1166: if(delim_maybe_code) { // delimiter set
1167: bool need_delim=false;
1.316 moko 1168: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1169: table.set_current(row);
1170:
1171: if(rownum_var_name)
1.299 moko 1172: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1173: if(value_var_name)
1.299 moko 1174: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1175:
1176: StringOrValue sv_processed=r.process(body_code);
1177: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1178:
1179: const String* s_processed=sv_processed.get_string();
1180: if(s_processed && !s_processed->is_empty()) { // we have body
1181: if(need_delim) // need delim & iteration produced string?
1182: r.write_pass_lang(r.process(*delim_maybe_code));
1183: else
1184: need_delim=true;
1185: }
1186:
1187: r.write_pass_lang(sv_processed);
1188:
1189: if(lskip==Request::SKIP_BREAK)
1190: break;
1191: }
1192: } else {
1.316 moko 1193: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1194: table.set_current(row);
1195:
1196: if(rownum_var_name)
1.300 moko 1197: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1198: if(value_var_name)
1.300 moko 1199: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1200:
1201: r.process_write(body_code);
1202: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1203:
1204: if(lskip==Request::SKIP_BREAK)
1205: break;
1206: }
1207: }
1208: table.set_current(saved_current);
1209: }
1210:
1.309 moko 1211: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1212: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1213: }
1214:
1215: inline Table::element_type row_from_string(Request& r, Value ¶m){
1216: if(!param.is_string() && !param.get_junction())
1217: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1218:
1.182 paf 1219: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.309 moko 1220: const String& string=r.process_to_string(param);
1.41 paf 1221:
1222: // parse cells
1.182 paf 1223: Table::element_type row=new ArrayString;
1224: size_t pos_after=0;
1225: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1226:
1.309 moko 1227: return row;
1.41 paf 1228: }
1229:
1.309 moko 1230: static void _append(Request& r, MethodParams& params) {
1231: VTable vtable=GET_SELF(r, VTable);
1232: Table& table=vtable.table();
1.306 moko 1233:
1.309 moko 1234: HashStringValue* hash=params[0].get_hash();
1235: if(hash){
1236: table+=new ArrayString();
1237: size_t saved_current=table.current();
1238: table.set_current(table.count()-1);
1239: hash->for_each<VTable*>(update_cell, &vtable);
1240: table.set_current(saved_current);
1241: } else {
1242: table+=row_from_string(r, params[0]);
1243: }
1244: }
1.306 moko 1245:
1.309 moko 1246: static void _insert(Request& r, MethodParams& params) {
1247: VTable vtable=GET_SELF(r, VTable);
1248: Table& table=vtable.table();
1249: HashStringValue* hash=params[0].get_hash();
1250: if(hash){
1251: table.insert(table.current(), new ArrayString());
1252: hash->for_each<VTable*>(update_cell, &vtable);
1253: } else {
1254: table.insert(table.current(), row_from_string(r, params[0]));
1255: }
1.306 moko 1256: }
1257:
1.311 moko 1258: static void _delete(Request& r, MethodParams&) {
1.307 moko 1259: Table& table=GET_SELF(r, VTable).table();
1260: table.remove_current();
1261: }
1262:
1.182 paf 1263: static void join_named_row(Table& src, Table* dest) {
1264: Table::columns_type dest_columns=dest->columns();
1265: size_t dest_columns_count=dest_columns->count();
1266: Table::element_type dest_row(new ArrayString(dest_columns_count));
1267: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1268: const String* src_item=src.item(*dest_columns->get(dest_column));
1269: *dest_row+=src_item?src_item:new String;
1270: }
1271: *dest+=dest_row;
1272: }
1273: static void join_nameless_row(Table& src, Table* dest) {
1274: *dest+=src[src.current()];
1275: }
1276: static void _join(Request& r, MethodParams& params) {
1.288 misha 1277: Table& src=*params.as_table(0, "source");
1.176 paf 1278:
1.268 misha 1279: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1280:
1.182 paf 1281: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1282: if(&src == &dest)
1.318 moko 1283: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1284:
1.193 paf 1285: if(dest.columns()) // dest is named
1.182 paf 1286: src.table_for_each(join_named_row, &dest, o);
1287: else // dest is nameless
1288: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1289: }
1290:
1.94 parser 1291: #ifndef DOXYGEN
1.169 paf 1292: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1293: ArrayString& columns;
1.218 paf 1294: int columns_count;
1.182 paf 1295: ArrayString* row;
1.94 parser 1296: public:
1.182 paf 1297: Table* table;
1298: public:
1299: Table_sql_event_handlers() :
1300: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1301: }
1302:
1.279 misha 1303: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1304: try {
1.274 moko 1305: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1306: return false;
1307: } catch(...) {
1308: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1309: return true;
1310: }
1311: }
1312: bool before_rows(SQL_Error& error) {
1313: try {
1.182 paf 1314: table=new Table(&columns);
1.218 paf 1315: columns_count=columns.count();
1.170 paf 1316: return false;
1317: } catch(...) {
1318: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1319: return true;
1320: }
1321: }
1322: bool add_row(SQL_Error& error) {
1323: try {
1.218 paf 1324: *table+=row=new ArrayString(columns_count);
1.170 paf 1325: return false;
1326: } catch(...) {
1327: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1328: return true;
1329: }
1330: }
1.279 misha 1331: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1332: try {
1.292 misha 1333: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1334: return false;
1335: } catch(...) {
1336: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1337: return true;
1338: }
1.94 parser 1339: }
1340: };
1341: #endif
1.204 paf 1342:
1343: static void marshal_bind(
1344: HashStringValue::key_type aname,
1345: HashStringValue::value_type avalue,
1346: SQL_Driver::Placeholder** pptr)
1347: {
1348: SQL_Driver::Placeholder& ph=**pptr;
1349: ph.name=aname.cstr();
1.261 misha 1350: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1351: ph.is_null=avalue->get_class()==void_class;
1352: ph.were_updated=false;
1353:
1354: (*pptr)++;
1355: }
1356:
1357: // not static, used elsewhere
1358: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1359: int hash_count=hash.count();
1.302 moko 1360: placeholders=new SQL_Driver::Placeholder[hash_count];
1.204 paf 1361: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1362: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1363: return hash_count;
1364: }
1365:
1366: // not static, used elsewhere
1367: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1368: SQL_Driver::Placeholder* ph=placeholders;
1369: for(int i=0; i<placeholder_count; i++, ph++)
1370: if(ph->were_updated) {
1371: Value* value;
1372: if(ph->is_null)
1.248 misha 1373: value=VVoid::get();
1.204 paf 1374: else
1.256 misha 1375: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1376: hash.put(ph->name, value);
1377: }
1378: }
1379:
1.182 paf 1380: static void _sql(Request& r, MethodParams& params) {
1381: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1382:
1.204 paf 1383: HashStringValue* bind=0;
1.244 misha 1384: ulong limit=SQL_NO_LIMIT;
1.100 parser 1385: ulong offset=0;
1.281 misha 1386: if(params.count()>1)
1.288 misha 1387: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1388: int valid_options=0;
1389: if(Value* vbind=options->get(sql_bind_name)) {
1390: valid_options++;
1391: bind=vbind->get_hash();
1392: }
1393: if(Value* vlimit=options->get(sql_limit_name)) {
1394: valid_options++;
1395: limit=(ulong)r.process_to_value(*vlimit).as_double();
1396: }
1397: if(Value* voffset=options->get(sql_offset_name)) {
1398: valid_options++;
1399: offset=(ulong)r.process_to_value(*voffset).as_double();
1400: }
1401: if(valid_options!=options->count())
1402: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1403: }
1.49 paf 1404:
1.204 paf 1405: SQL_Driver::Placeholder* placeholders=0;
1406: uint placeholders_count=0;
1407: if(bind)
1408: placeholders_count=marshal_binds(*bind, placeholders);
1409:
1.182 paf 1410: Temp_lang temp_lang(r, String::L_SQL);
1411: const String& statement_string=r.process_to_string(statement);
1.262 misha 1412: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1413:
1.182 paf 1414: Table_sql_event_handlers handlers;
1.294 moko 1415:
1.182 paf 1416: r.connection()->query(
1.203 paf 1417: statement_cstr,
1.208 paf 1418: placeholders_count, placeholders,
1.203 paf 1419: offset, limit,
1.160 paf 1420: handlers,
1421: statement_string);
1.135 paf 1422:
1.204 paf 1423: if(bind)
1424: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1425:
1.182 paf 1426: Table& result=
1427: handlers.table?*handlers.table: // query resulted in table? return it
1428: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1429:
1430: // replace any previous table value
1.182 paf 1431: GET_SELF(r, VTable).set_table(result);
1.49 paf 1432: }
1433:
1.233 misha 1434: static void _columns(Request& r, MethodParams& params) {
1435: const String* column_column_name;
1436: if(params.count()>0)
1437: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1438: else
1439: column_column_name=new String("column");
1.88 parser 1440:
1.182 paf 1441: Table::columns_type result_columns(new ArrayString);
1.233 misha 1442: *result_columns+=column_column_name;
1.182 paf 1443: Table& result_table=*new Table(result_columns);
1.88 parser 1444:
1.182 paf 1445: Table& source_table=GET_SELF(r, VTable).table();
1446: if(Table::columns_type source_columns=source_table.columns()) {
1447: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1448: Table::element_type result_row(new ArrayString);
1449: *result_row+=i.next();
1450: result_table+=result_row;
1.88 parser 1451: }
1452: }
1453:
1.182 paf 1454: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1455: }
1456:
1.182 paf 1457: static void _select(Request& r, MethodParams& params) {
1.231 misha 1458: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1459:
1.182 paf 1460: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1461:
1.277 moko 1462: int limit=source_table.count();
1.282 misha 1463: int offset=0;
1464: bool reverse=false;
1.278 moko 1465:
1.281 misha 1466: if(params.count()>1)
1467: if(HashStringValue* options=params.as_hash(1)) {
1468: int valid_options=0;
1469: if(Value* vlimit=options->get(sql_limit_name)) {
1470: valid_options++;
1471: limit=r.process_to_value(*vlimit).as_int();
1472: }
1473: if(Value* voffset=options->get(sql_offset_name)) {
1474: valid_options++;
1475: offset=r.process_to_value(*voffset).as_int();
1476: }
1477: if(Value* vreverse=options->get(table_reverse_name)) {
1478: valid_options++;
1479: reverse=r.process_to_value(*vreverse).as_bool();
1480: }
1481: if(valid_options!=options->count())
1.288 misha 1482: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1483: }
1484:
1485: Table& result_table=*new Table(source_table.columns());
1.277 moko 1486:
1.283 misha 1487: size_t size=source_table.count();
1488: if(offset<0)
1489: offset+=size;
1.284 misha 1490: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1491: size_t saved_current=source_table.current();
1492: size_t appended=0;
1493:
1494: if(reverse){
1495: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1496: source_table.set_current(row);
1497:
1498: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1499:
1500: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1501: result_table+=source_table[row];
1502: if(row==0) break;
1503: }
1504: } else {
1505: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1506: source_table.set_current(row);
1.148 paf 1507:
1.282 misha 1508: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1509:
1.282 misha 1510: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1511: result_table+=source_table[row];
1512: }
1.277 moko 1513: }
1.282 misha 1514: source_table.set_current(saved_current);
1.148 paf 1515: }
1516:
1.182 paf 1517: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1518: }
1519:
1.66 paf 1520: // constructor
1521:
1.182 paf 1522: MTable::MTable(): Methoded("table") {
1.142 paf 1523: // ^table::create{data}
1524: // ^table::create[nameless]{data}
1525: // ^table::create[table]
1.236 misha 1526: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1527: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1528: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1529:
1.142 paf 1530: // ^table::load[file]
1531: // ^table::load[nameless;file]
1.168 paf 1532: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1533:
1534: // ^table.save[file]
1535: // ^table.save[nameless;file]
1.188 paf 1536: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1537:
1.224 misha 1538: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1539:
1.297 moko 1540: // ^table.csv-string[]
1541: // ^table.csv-string[nameless]
1542: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1543: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1544:
1.6 paf 1545: // ^table.count[]
1.280 misha 1546: // ^table.count[rows]
1547: // ^table.count[columns]
1548: // ^table.count[cells]
1549: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1550:
1551: // ^table.line[]
1.66 paf 1552: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1553:
1.10 paf 1554: // ^table.offset[]
1.133 paf 1555: // ^table.offset(offset)
1556: // ^table.offset[cur|set](offset)
1557: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1558:
1.10 paf 1559: // ^table.menu{code}
1560: // ^table.menu{code}[delim]
1.66 paf 1561: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1562:
1.239 misha 1563: // ^table.hash[key field name]
1564: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1565: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1566:
1.102 parser 1567: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1568: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1569: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1570:
1.36 paf 1571: // ^table.locate[field;value]
1.176 paf 1572: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1573:
1574: // ^table.flip[]
1.66 paf 1575: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1576:
1.293 misha 1577: // ^table.foreach[row-num;value]{code}
1578: // ^table.foreach[row-num;value]{code}[delim]
1579: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1580:
1.306 moko 1581: // ^table.append{row{tab}data}
1.66 paf 1582: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1583:
1.306 moko 1584: // ^table.insert{row{tab}data} before current row
1585: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1586:
1.307 moko 1587: // ^table.delete[] current row
1588: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1589:
1.157 paf 1590: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1591: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1592:
1593:
1.239 misha 1594: // ^table::sql[query]
1595: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1596: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1597:
1.239 misha 1598: // ^table.columns[[column name]]
1.233 misha 1599: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1600:
1601: // ^table.select(expression) = table
1.277 moko 1602: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1603: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to table.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes