Annotation of parser3/src/classes/table.C, revision 1.347
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.342 moko 4: Copyright (c) 2001-2017 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:
1.345 moko 20: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4) && !defined(PA_DEBUG_DISABLE_GC))
1.305 moko 21: #include <sstream>
22: #define USE_STRINGSTREAM
23: #endif
24:
1.347 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.346 2017/12/05 22:59:57 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: // globals
41:
1.347 ! moko 42: #define TABLE_REVERSE_NAME "reverse"
1.182 paf 43: String table_reverse_name(TABLE_REVERSE_NAME);
44:
1.1 paf 45: // methods
1.66 paf 46:
1.319 moko 47: static Table::Action_options get_action_options(Request& r, MethodParams& params, size_t options_index, const Table& source) {
1.176 paf 48: Table::Action_options result;
1.268 misha 49: if(params.count() <= options_index)
1.182 paf 50: return result;
51:
1.288 misha 52: HashStringValue* options=params.as_hash(options_index);
1.176 paf 53: if(!options)
54: return result;
55:
56: result.defined=true;
57: bool defined_offset=false;
58:
59: int valid_options=0;
1.182 paf 60: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 61: valid_options++;
62: defined_offset=true;
63: if(voffset->is_string()) {
1.182 paf 64: const String& soffset=*voffset->get_string();
1.176 paf 65: if(soffset == "cur")
66: result.offset=source.current();
67: else
1.318 moko 68: throw Exception(PARSER_RUNTIME, &soffset, "must be 'cur' string or expression");
1.176 paf 69: } else
1.335 moko 70: result.offset=r.process(*voffset).as_int();
1.176 paf 71: }
1.182 paf 72: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 73: valid_options++;
1.335 moko 74: result.limit=r.process(*vlimit).as_int();
1.176 paf 75: }
1.182 paf 76: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
77: valid_options++;
1.335 moko 78: result.reverse=r.process(*vreverse).as_bool();
1.182 paf 79: if(result.reverse && !defined_offset)
80: result.offset=source.count()-1;
81: }
82:
83: if(valid_options!=options->count())
1.272 misha 84: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 85:
86: return result;
87: }
1.157 paf 88:
1.319 moko 89: struct TableControlChars {
90: char separator; const String* sseparator;
1.236 misha 91: char encloser; const String* sencloser;
92:
1.320 moko 93: char separators[3];
94:
1.319 moko 95: TableControlChars():
96: separator('\t'), sseparator(new String("\t")),
1.236 misha 97: encloser(0), sencloser(0)
1.320 moko 98: {
99: strcpy(separators,"\t\n");
100: }
101:
1.236 misha 102: int load( HashStringValue& options ) {
103: int result=0;
104: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.319 moko 105: sseparator=&vseparator->as_string();
106: if(sseparator->length()!=1)
1.323 moko 107: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one byte character");
1.319 moko 108: separator=sseparator->first_char();
1.320 moko 109: separators[0]=separator;
1.236 misha 110: result++;
111: }
112: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
113: sencloser=&vencloser->as_string();
1.297 moko 114: if(sencloser->is_empty()){
115: encloser=0;
116: } else {
1.325 moko 117: if(sencloser->length()!=1)
118: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be empty or one byte character");
119: encloser=sencloser->first_char();
1.297 moko 120: }
1.236 misha 121: result++;
122: }
123: return result;
124: }
125: };
126:
1.319 moko 127:
1.322 moko 128: struct lsplit_sresult {
129: String* piece;
130: char delim;
131:
132: lsplit_sresult() : piece(0), delim(0){}
133:
134: operator bool() { return piece!=0; }
135:
136: void append(String *str){
137: if(piece)
138: *piece << *str;
139: else
140: piece = str;
141: }
142: };
143:
144: class StringSplitHelper : public String {
145: public:
146: char* base;
147:
148: StringSplitHelper(String astring) : String(astring), base(cstrm()) {}
149:
150: bool check_lang(const char *pos){
151: return langs.check_lang(L_AS_IS, pos-base, 1);
152: }
153:
154: String *extract(char *pos){
155: String *result=new String;
1.330 moko 156: if(size_t len=strlen(pos)){
157: // first: their langs
158: result->langs.append(result->body, langs, pos-base, len);
159: // next: letters themselves
160: result->body=Body(pos);
161: }
1.322 moko 162: return result;
163: }
164: };
165:
166: inline lsplit_sresult lsplit(char* *string_ref, const char* delims, StringSplitHelper& helper) {
167: lsplit_sresult result;
168: if(char *pos=*string_ref) {
1.327 moko 169: while(pos=strpbrk(pos, delims)) {
170: if(helper.check_lang(pos)){
171: result.delim=*pos;
172: *pos=0;
1.322 moko 173: result.piece=helper.extract(*string_ref);
1.327 moko 174: *string_ref=pos+1;
1.322 moko 175: return result;
176: }
1.327 moko 177: pos++;
1.322 moko 178: }
179: result.piece=helper.extract(*string_ref);
180: *string_ref=0;
181: }
182: return result;
183: }
184:
185: static lsplit_sresult lsplit(char** string_ref, const char* delims, char encloser, StringSplitHelper& helper) {
186: lsplit_sresult result;
187:
188: if(char *pos=*string_ref) {
189: if(encloser && *pos==encloser && helper.check_lang(pos)) {
190: *string_ref=++pos;
191:
192: // we are enclosed, searching for second encloser
193: while(1) {
1.328 moko 194: if(pos=strchr(pos, encloser)){
195: if(helper.check_lang(pos)){
196: *(pos++)=0;
1.322 moko 197: result.append(helper.extract(*string_ref));
1.328 moko 198: if(*pos==encloser && helper.check_lang(pos)){ // double-encloser stands for encloser
1.333 moko 199: *string_ref=pos;
1.322 moko 200: } else {
1.328 moko 201: *string_ref=pos;
1.322 moko 202: break;
203: }
204: }
1.333 moko 205: pos++;
1.327 moko 206: } else {
1.322 moko 207: result.append(helper.extract(*string_ref));
208: *string_ref=0;
209: return result;
210: }
211: }
212:
213: // we are no longer enclosed, searching for delimiter
1.328 moko 214: while(pos=strpbrk(pos, delims)) {
215: if(helper.check_lang(pos)){
216: result.delim=*pos;
217: if(pos>*string_ref){
218: *pos=0;
1.322 moko 219: result.append(helper.extract(*string_ref));
220: }
1.328 moko 221: *string_ref=pos+1;
1.322 moko 222: return result;
223: }
1.328 moko 224: pos++;
1.322 moko 225: }
226: result.append(helper.extract(*string_ref));
227: *string_ref=0;
228: } else
229: return lsplit(string_ref, delims, helper);
230: }
231: return result;
232: }
233:
234: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
235: if(*data_ref) {
236: while(**data_ref == '\n' && helper.check_lang(*data_ref))
237: (*data_ref)++;
238: }
239: }
240:
1.182 paf 241: static void _create(Request& r, MethodParams& params) {
1.157 paf 242: // clone/copy part?
1.182 paf 243: if(Table *source=params[0].get_table()) {
1.268 misha 244: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 245: if(params.count()>2)
246: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 247: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 248: return;
249: }
1.142 paf 250:
1.236 misha 251: size_t data_param_index=0;
252: bool nameless=false;
253:
254: if(params.count()>1) {
255: if(params[0].is_string()){ // can be nameless only
256: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
257: if(snameless!="nameless")
1.318 moko 258: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 259: nameless=true;
260: data_param_index++;
261: }
262: }
263:
264: HashStringValue *options=0;
1.319 moko 265: TableControlChars control_chars;
1.236 misha 266:
267: size_t options_param_index=data_param_index+1;
1.322 moko 268: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.324 moko 269: if(control_chars.load(*options)!=options->count())
270: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.236 misha 271: }
272:
273: // data
1.322 moko 274: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
275: char *data=sdata.base;
1.44 paf 276:
277: // parse columns
1.182 paf 278: Table::columns_type columns;
1.322 moko 279: if(nameless) {
280: columns=0; // nameless
1.21 paf 281: } else {
1.322 moko 282: columns=new ArrayString;
283: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
284: *columns+=sr.piece;
285: if(sr.delim=='\n')
286: break;
1.182 paf 287: }
1.44 paf 288: }
1.322 moko 289:
290: Table& table=*new Table(columns);
291: int columns_count=columns ? columns->count(): 0;
1.44 paf 292:
293: // parse cells
1.322 moko 294: Table::element_type row(new ArrayString(columns_count));
295: skip_clean_empty_lines(&data, sdata);
296: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
297: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
298: break;
299: *row+=sr.piece;
300: if(sr.delim=='\n') {
301: table+=row;
302: row=new ArrayString(columns_count);
303: skip_clean_empty_lines(&data, sdata);
304: }
305: }
306: // last line [if without \n]
307: if(row->count())
1.182 paf 308: table+=row;
1.322 moko 309:
1.44 paf 310: // replace any previous table value
1.182 paf 311: GET_SELF(r, VTable).set_table(table);
1.44 paf 312: }
313:
1.187 paf 314: struct lsplit_result {
315: char* piece;
316: char delim;
317:
1.321 moko 318: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 319: operator bool() { return piece!=0; }
320: };
321:
1.321 moko 322: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
323: lsplit_result result(*string_ref);
324: if(result.piece) {
325: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 326: result.delim=*v;
327: *v=0;
1.321 moko 328: *string_ref=v+1;
1.187 paf 329: return result;
330: }
1.322 moko 331: *string_ref=0;
1.273 misha 332: }
333: return result;
1.187 paf 334: }
335:
1.320 moko 336: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 337: lsplit_result result(*string_ref);
1.187 paf 338:
1.321 moko 339: if(result.piece) {
340: if(encloser && *result.piece==encloser) {
341: result.piece++;
1.187 paf 342:
1.321 moko 343: char c;
1.187 paf 344: char *read;
345: char *write;
1.321 moko 346: write=read=result.piece;
347:
1.290 moko 348: // we are enclosed, searching for second encloser
349: while(c=*read++) {
1.187 paf 350: if(c==encloser) {
1.290 moko 351: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 352: read++;
1.290 moko 353: else
354: break; // note: skipping encloser
1.187 paf 355: }
356: *write++=c;
357: }
1.321 moko 358:
1.329 moko 359: // we are no longer enclosed, searching for delimiter
1.290 moko 360: while(c=*read++) {
1.320 moko 361: if(c==delims[0] || c==delims[1]) {
1.290 moko 362: result.delim=c;
363: break;
1.329 moko 364: } else
1.290 moko 365: *write++=c;
366: }
1.321 moko 367:
1.187 paf 368: *write=0; // terminate
1.321 moko 369: *string_ref=c ? read : 0;
1.187 paf 370: return result;
371: } else
1.320 moko 372: return lsplit(string_ref, delims);
1.273 misha 373: }
374: return result;
1.187 paf 375: }
376:
377: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 moko 378: while(*data_ref) {
379: if(**data_ref == '\n'){
380: (*data_ref)++;
381: } else {
382: if(**data_ref == '#' )
383: /*nowhere=*/getrow(data_ref);
384: else
385: break;
1.187 paf 386: }
387: }
388: }
389:
1.273 misha 390: static void skip_empty_lines( char** data_ref ) {
1.322 moko 391: if(*data_ref) {
392: while(**data_ref == '\n')
393: (*data_ref)++;
1.273 misha 394: }
395: }
396:
397: typedef void (*Skip_lines_action)(char** data_ref);
398:
1.182 paf 399: static void _load(Request& r, MethodParams& params) {
1.232 misha 400: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 401: int filename_param_index=0;
402: bool nameless=first_param=="nameless";
403: if(nameless)
404: filename_param_index++;
1.182 paf 405: size_t options_param_index=filename_param_index+1;
1.186 paf 406:
407: HashStringValue *options=0;
1.319 moko 408: TableControlChars control_chars;
1.186 paf 409: if(options_param_index<params.count()
1.288 misha 410: && (options=params.as_hash(options_param_index))) {
1.186 paf 411: // cloning, so that we could change [to simplify checks on params inside file_read_text
412: options=new HashStringValue(*options);
1.319 moko 413: control_chars.load(*options);
1.186 paf 414: }
415:
1.44 paf 416: // loading text
1.321 moko 417: char *data=file_load_text(r, r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)), true, options);
1.44 paf 418:
1.319 moko 419: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 420:
1.1 paf 421: // parse columns
1.182 paf 422: Table::columns_type columns;
1.168 paf 423: if(nameless) {
1.322 moko 424: columns=0; // nameless
1.1 paf 425: } else {
1.322 moko 426: columns=new ArrayString;
1.1 paf 427:
1.273 misha 428: skip_lines_action(&data);
1.320 moko 429: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 430: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 431: if(sr.delim=='\n')
432: break;
1.139 paf 433: }
1.1 paf 434: }
1.187 paf 435:
436: Table& table=*new Table(columns);
1.322 moko 437: int columns_count=columns ? columns->count(): 0;
1.1 paf 438:
439: // parse cells
1.218 paf 440: Table::element_type row(new ArrayString(columns_count));
1.273 misha 441: skip_lines_action(&data);
1.320 moko 442: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 443: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
444: break;
1.256 misha 445: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 446: if(sr.delim=='\n') {
447: table+=row;
1.218 paf 448: row=new ArrayString(columns_count);
1.273 misha 449: skip_lines_action(&data);
1.1 paf 450: }
1.187 paf 451: }
452: // last line [if without \n]
453: if(row->count())
1.1 paf 454: table+=row;
1.187 paf 455:
1.1 paf 456: // replace any previous table value
1.182 paf 457: GET_SELF(r, VTable).set_table(table);
1.1 paf 458: }
1.2 paf 459:
1.297 moko 460: #ifdef USE_STRINGSTREAM
1.346 moko 461: #include "../lib/gc/include/gc_allocator.h"
1.269 misha 462:
463: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
464: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
465:
1.298 moko 466: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 467: if(from){
1.257 misha 468: to<<encloser;
1.188 paf 469: // while we have 'encloser'...
1.189 paf 470: size_t pos_after=0;
1.297 moko 471: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 472: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 473: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 474: to<<encloser; // doubling encloser
1.188 paf 475: }
476: // last piece
1.297 moko 477: size_t from_length=from->length();
1.188 paf 478: if(pos_after<from_length)
1.297 moko 479: to<<from->mid(pos_after, from_length).cstr();
480: to<<encloser;
481: } else {
482: to<<encloser<<encloser;
483: }
484: }
485:
1.319 moko 486: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 487: if(output_column_names) {
488: if(table.columns()) { // named table
1.319 moko 489: if(control_chars.encloser){
1.297 moko 490: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 491: enclose( result, i.next(), control_chars.encloser );
1.297 moko 492: if(i.has_next())
1.319 moko 493: result<<control_chars.separator;
1.297 moko 494: }
495: } else {
496: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
497: result<<i.next()->cstr();
498: if(i.has_next())
1.319 moko 499: result<<control_chars.separator;
1.297 moko 500: }
501: }
502: } else { // nameless table [we were asked to output column names]
503: if(int lsize=table.count()?table[0]->count():0)
504: for(int column=0; column<lsize; column++) {
1.319 moko 505: if(control_chars.encloser) {
506: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 507: } else {
508: result<<column;
509: }
510: if(column<lsize-1){
1.319 moko 511: result<<control_chars.separator;
1.297 moko 512: }
513: }
514: else
515: result<<"empty nameless table";
516: }
517: result<<'\n';
518: }
1.188 paf 519:
1.297 moko 520: // process data lines
521: Array_iterator<ArrayString*> i(table);
1.319 moko 522: if(control_chars.encloser){
1.297 moko 523: while(i.has_next()) {
524: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 525: enclose( result, c.next(), control_chars.encloser );
1.297 moko 526: if(c.has_next())
1.319 moko 527: result<<control_chars.separator;
1.297 moko 528: }
529: result<<'\n';
530: }
531: } else {
532: while(i.has_next()) {
533: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
534: result<<c.next()->cstr();
535: if(c.has_next())
1.319 moko 536: result<<control_chars.separator;
1.297 moko 537: }
538: result<<'\n';
539: }
540: }
1.188 paf 541: }
542:
1.241 misha 543: #else
544:
1.298 moko 545: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 546: if(from){
1.257 misha 547: to<<*sencloser;
1.224 misha 548: // while we have 'encloser'...
549: size_t pos_after=0;
1.297 moko 550: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 551: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 552: to<<from->mid(pos_after, pos_before);
1.257 misha 553: to<<*sencloser; // doubling encloser
1.224 misha 554: }
555: // last piece
1.297 moko 556: size_t from_length=from->length();
1.224 misha 557: if(pos_after<from_length)
1.297 moko 558: to<<from->mid(pos_after, from_length);
1.257 misha 559: to<<*sencloser;
1.297 moko 560: } else {
561: to<<*sencloser<<*sencloser;
562: }
1.224 misha 563: }
564:
1.319 moko 565: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 566: if(output_column_names) {
567: if(table.columns()) { // named table
1.319 moko 568: if(control_chars.encloser) {
1.297 moko 569: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 570: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 571: if(i.has_next())
1.319 moko 572: result<<*control_chars.sseparator;
1.297 moko 573: }
574: } else {
575: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
576: result<<*i.next();
577: if(i.has_next())
1.319 moko 578: result<<*control_chars.sseparator;
1.297 moko 579: }
580: }
581: } else { // nameless table [we were asked to output column names]
582: if(int lsize=table.count()?table[0]->count():0)
583: for(int column=0; column<lsize; column++) {
1.319 moko 584: if(control_chars.encloser) {
585: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 586: } else {
587: result<<String::Body::Format(column);
588: }
589: if(column<lsize-1){
1.319 moko 590: result<<*control_chars.sseparator;
1.298 moko 591: }
1.297 moko 592: }
593: else
594: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
595: }
596: result.append_know_length("\n", 1, String::L_CLEAN);
597: }
598:
599: // data lines
600: Array_iterator<ArrayString*> i(table);
1.319 moko 601: if(control_chars.encloser){
1.297 moko 602: while(i.has_next()) {
603: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 604: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 605: if(c.has_next())
1.319 moko 606: result<<*control_chars.sseparator;
1.297 moko 607: }
608: result.append_know_length("\n", 1, String::L_CLEAN);
609: }
610: } else {
611: while(i.has_next()) {
612: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
613: result<<*c.next();
614: if(c.has_next())
1.319 moko 615: result<<*control_chars.sseparator;
1.297 moko 616: }
617: result.append_know_length("\n", 1, String::L_CLEAN);
618: }
619: }
620: }
1.257 misha 621: #endif // don't use stringstream
1.241 misha 622:
1.297 moko 623:
1.241 misha 624: static void _save(Request& r, MethodParams& params) {
1.237 misha 625: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 626: size_t param_index=1;
627:
628: bool do_append=false;
629: bool output_column_names=true;
630:
631: // mode?
632: if(first_arg=="append")
633: do_append=true;
634: else if(first_arg=="nameless")
635: output_column_names=false;
636: else
637: --param_index;
638:
1.232 misha 639: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 640: String file_spec=r.absolute(file_name);
641:
642: if(do_append && file_exist(file_spec))
643: output_column_names=false;
1.188 paf 644:
1.319 moko 645: TableControlChars control_chars;
1.281 misha 646: if(param_index<params.count())
1.288 misha 647: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 648: int valid_options=control_chars.load(*options);
1.281 misha 649: if(valid_options!=options->count())
650: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 651: }
1.281 misha 652:
1.188 paf 653: if(param_index<params.count())
1.318 moko 654: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 655:
1.182 paf 656: Table& table=GET_SELF(r, VTable).table();
1.31 paf 657:
1.297 moko 658: #ifdef USE_STRINGSTREAM
1.269 misha 659: pa_stringstream ost(std::stringstream::out);
1.257 misha 660:
1.319 moko 661: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 662:
663: // write
1.269 misha 664: pa_string data=ost.str();
1.257 misha 665: const char* data_cstr=data.c_str();
1.267 misha 666: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 667: #else
1.257 misha 668: String sdata;
1.224 misha 669:
1.319 moko 670: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 671:
672: // write
1.257 misha 673: const char* data_cstr=sdata.cstr();
1.297 moko 674: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 675: if(*data_cstr) // not empty (when empty it's not heap memory)
676: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 677: #endif
678: }
679:
680: static void _csv_string(Request& r, MethodParams& params) {
681: bool output_column_names=true;
682: size_t param_index=0;
683: if(params.count()>0 && params[0].is_string()) {
684: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
685: output_column_names=false;
686: param_index++;
687: } else {
1.318 moko 688: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 689: }
1.224 misha 690: }
1.240 misha 691:
1.319 moko 692: TableControlChars control_chars;
1.297 moko 693: if(param_index<params.count())
694: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 695: int valid_options=control_chars.load(*options);
1.297 moko 696: if(valid_options!=options->count())
697: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
698: }
699:
700: Table& table=GET_SELF(r, VTable).table();
701:
702: #ifdef USE_STRINGSTREAM
703: pa_stringstream ost(std::stringstream::out);
704:
1.319 moko 705: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 706:
1.338 moko 707: r.write(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
1.297 moko 708: #else
709: String sdata;
710:
1.319 moko 711: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 712:
1.338 moko 713: r.write(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
1.297 moko 714: #endif
1.224 misha 715: }
716:
1.280 misha 717: static void _count(Request& r, MethodParams& params) {
718: Table& table=GET_SELF(r, VTable).table();
719: size_t result=0;
720: if(params.count()) {
721: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
722: if(param == "columns")
1.310 moko 723: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 724: else if(param == "cells")
725: result = table.count() ? table[table.current()]->count() : 0;
726: else if(param == "rows") // synonim for ^table.count[]
727: result = table.count();
728: else
729: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
730: } else
731: result = table.count();
732:
1.338 moko 733: r.write(*new VInt(result));
1.6 paf 734: }
735:
1.182 paf 736: static void _line(Request& r, MethodParams&) {
737: int result=1+GET_SELF(r, VTable).table().current();
1.338 moko 738: r.write(*new VInt(result));
1.6 paf 739: }
740:
1.182 paf 741: static void _offset(Request& r, MethodParams& params) {
742: Table& table=GET_SELF(r, VTable).table();
743: if(params.count()) {
1.133 paf 744: bool absolute=false;
1.182 paf 745: if(params.count()>1) {
746: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 747: if(whence=="cur")
1.134 paf 748: absolute=false;
1.133 paf 749: else if(whence=="set")
1.134 paf 750: absolute=true;
1.133 paf 751: else
1.318 moko 752: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 753: }
1.133 paf 754:
1.211 paf 755: int offset=params.as_int(params.count()-1, "offset must be expression", r);
756: table.offset(absolute, offset);
1.151 paf 757: } else
1.338 moko 758: r.write(*new VInt(table.current()));
1.6 paf 759: }
760:
1.182 paf 761: static void _menu(Request& r, MethodParams& params) {
1.263 misha 762: InCycle temp(r);
1.221 paf 763:
1.182 paf 764: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 765:
1.182 paf 766: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 767:
1.182 paf 768: Table& table=GET_SELF(r, VTable).table();
1.293 misha 769: size_t saved_current=table.current();
1.7 paf 770:
1.251 misha 771: if(delim_maybe_code) { // delimiter set
1.250 misha 772: bool need_delim=false;
1.316 moko 773: for(size_t row=0; row<table.count(); row++) {
1.250 misha 774: table.set_current(row);
775:
1.334 moko 776: Value& sv_processed=r.process(body_code);
1.341 moko 777: TempSkip4Delimiter skip(r);
1.250 misha 778:
779: const String* s_processed=sv_processed.get_string();
1.251 misha 780: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 781: if(need_delim) // need delim & iteration produced string?
1.338 moko 782: r.write(r.process(*delim_maybe_code));
1.250 misha 783: else
784: need_delim=true;
785: }
786:
1.338 moko 787: r.write(sv_processed);
1.242 misha 788:
1.341 moko 789: if(skip.check_break())
1.250 misha 790: break;
791: }
792: } else {
1.316 moko 793: for(size_t row=0; row<table.count(); row++) {
1.250 misha 794: table.set_current(row);
795:
796: r.process_write(body_code);
797:
1.341 moko 798: if(r.check_skip_break())
1.250 misha 799: break;
1.7 paf 800: }
801: }
1.99 parser 802: table.set_current(saved_current);
1.7 paf 803: }
804:
1.110 parser 805: #ifndef DOXYGEN
1.74 paf 806: struct Row_info {
1.166 paf 807: Request *r;
1.74 paf 808: Table *table;
1.182 paf 809: Value* key_code;
810: size_t key_field;
811: Array<int>* value_fields;
1.315 moko 812: Value* value_code;
1.182 paf 813: HashStringValue* hash;
1.174 paf 814: Table2hash_distint distinct;
1.182 paf 815: size_t row;
1.227 misha 816: Table2hash_value_type value_type;
1.74 paf 817: };
1.110 parser 818: #endif
1.182 paf 819: static void table_row_to_hash(Table::element_type row, Row_info *info) {
820: const String* key;
821: if(info->key_code) {
822: info->table->set_current(info->row++); // change context row
1.334 moko 823: Value& sv_processed=info->r->process(*info->key_code);
1.166 paf 824: key=&sv_processed.as_string();
1.227 misha 825: } else {
1.182 paf 826: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 827: }
1.166 paf 828:
829: if(!key)
830: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 831:
1.243 misha 832: bool exist=false;
833: switch(info->value_type) {
834: case C_STRING: {
1.317 moko 835: if(info->value_fields->count()){
836: size_t index=info->value_fields->get(0);
837: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
838: } else {
839: exist=info->hash->put_dont_replace(*key, VString::empty());
840: }
1.243 misha 841: break;
1.227 misha 842: }
1.243 misha 843: case C_HASH: {
1.182 paf 844: VHash* vhash=new VHash;
845: HashStringValue& hash=vhash->hash();
846: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
847: size_t value_field=i.next();
848: if(value_field<row->count())
1.314 moko 849: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 850: }
851:
1.227 misha 852: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 853: break;
1.174 paf 854: }
1.243 misha 855: case C_TABLE: {
856: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 857: Table* table;
1.227 misha 858: if(vtable) {
1.243 misha 859: if(info->distinct==D_ILLEGAL) {
860: exist=true;
861: break;
862: }
1.174 paf 863: table=vtable->get_table();
1.227 misha 864: } else {
1.174 paf 865: // no? creating table of same structure as source
1.179 paf 866: Table::Action_options table_options(0, 0);
1.182 paf 867: table=new Table(*info->table, table_options/*no rows, just structure*/);
868: info->hash->put(*key, new VTable(table));
1.174 paf 869: }
1.308 moko 870: Table::element_type row_copy(new ArrayString(row->count()));
871: row_copy->append(*row);
872: *table+=row_copy;
1.243 misha 873: break;
1.174 paf 874: }
1.315 moko 875: case C_CODE: {
876: if(!info->key_code)
877: info->table->set_current(info->row++); // change context row
1.334 moko 878: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code));
1.315 moko 879: break;
880: }
1.74 paf 881: }
1.227 misha 882: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 883: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 884: }
1.235 misha 885:
886: Table2hash_value_type get_value_type(Value& vvalue_type){
887: if(vvalue_type.is_string()) {
888: const String& svalue_type=*vvalue_type.get_string();
889: if(svalue_type == "table"){
890: return C_TABLE;
891: } else if (svalue_type == "string") {
892: return C_STRING;
893: } else if (svalue_type == "hash") {
894: return C_HASH;
895: } else {
1.314 moko 896: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 897: }
898: } else {
1.314 moko 899: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 900: }
901: }
902:
1.315 moko 903: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
904: if(vdistinct.is_string()) {
905: const String& sdistinct=*vdistinct.get_string();
906: if(sdistinct!="tables")
907: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
908: value_type=C_TABLE;
909: return D_FIRST;
910: }
911: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
912: }
913:
1.182 paf 914: static void _hash(Request& r, MethodParams& params) {
915: Table& self_table=GET_SELF(r, VTable).table();
916: VHash& result=*new VHash;
1.238 misha 917: if(Table::columns_type columns=self_table.columns()){
1.182 paf 918: if(columns->count()>0) {
1.174 paf 919: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 920: Table2hash_value_type value_type=C_HASH;
1.182 paf 921: int param_index=params.count()-1;
1.166 paf 922: if(param_index>0) {
1.315 moko 923:
924: if(params[1].get_junction())
925: value_type=C_CODE;
926:
927: 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 928: --param_index;
929: int valid_options=0;
1.238 misha 930: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 931: valid_options++;
1.335 moko 932: distinct=get_distinct(r.process(*vdistinct_code), value_type);
1.166 paf 933: }
1.238 misha 934: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
935: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 936: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 937: if(value_type==C_CODE)
938: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 939: valid_options++;
1.335 moko 940: value_type=get_value_type(r.process(*vvalue_type_code));
1.238 misha 941: }
1.226 misha 942:
1.182 paf 943: if(valid_options!=options->count())
1.272 misha 944: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 945: }
946: }
1.238 misha 947:
1.315 moko 948: if(param_index==2) // options were specified but not as hash
1.289 misha 949: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
950:
1.182 paf 951: Array<int> value_fields;
1.315 moko 952: Value* value_code=0;
953:
1.238 misha 954: if(param_index==0){ // list of columns wasn't specified
955: if(value_type==C_STRING) // $.type[string]
1.314 moko 956: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 957:
958: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
959: value_fields+=i;
960:
1.315 moko 961: } else { // list of columns or code was specified
1.227 misha 962: if(value_type==C_TABLE)
1.314 moko 963: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 964:
1.315 moko 965: Value& value_fields_param=params[1];
1.317 moko 966: if(value_fields_param.get_junction()){ // code specified
1.315 moko 967: value_code=&value_fields_param;
968: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 969: const String &field_name=*value_fields_param.get_string();
970: if(!field_name.is_empty())
971: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 972: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
973: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
974: const String& value_field_name =*i.next()->get(0);
975: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 976: }
977: } else
1.315 moko 978: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 979: }
1.74 paf 980:
1.340 moko 981: if(value_type==C_STRING && value_fields.count()>1)
982: throw Exception(PARSER_RUNTIME, 0, "you can't specify more then one value field with option $.type[string]");
1.182 paf 983:
984: {
985: Value* key_param=¶ms[0];
1.193 paf 986: Row_info info={
987: &r,
988: &self_table,
1.315 moko 989: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 990: /*key_field=*/0/*filled below*/,
1.193 paf 991: &value_fields,
1.315 moko 992: value_code,
1.193 paf 993: &result.hash(),
994: distinct,
1.227 misha 995: /*row=*/0,
996: value_type
1.193 paf 997: };
1.314 moko 998: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 999:
1000: int saved_current=self_table.current();
1001: self_table.for_each(table_row_to_hash, &info);
1002: self_table.set_current(saved_current);
1.207 paf 1003:
1004: result.extract_default();
1.182 paf 1005: }
1.74 paf 1006: }
1.238 misha 1007: }
1.338 moko 1008: r.write(result);
1.74 paf 1009: }
1010:
1.110 parser 1011: #ifndef DOXYGEN
1.344 moko 1012: struct Table_seq_item : public PA_Allocated {
1.182 paf 1013: ArrayString* row;
1.34 paf 1014: union {
1.182 paf 1015: const char *c_str;
1.34 paf 1016: double d;
1017: } value;
1.32 paf 1018: };
1.110 parser 1019: #endif
1.34 paf 1020: static int sort_cmp_string(const void *a, const void *b) {
1021: return strcmp(
1.78 paf 1022: static_cast<const Table_seq_item *>(a)->value.c_str,
1023: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1024: );
1025: }
1026: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1027: double va=static_cast<const Table_seq_item *>(a)->value.d;
1028: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1029: if(va<vb)
1030: return -1;
1031: else if(va>vb)
1032: return +1;
1033: else
1034: return 0;
1035: }
1.182 paf 1036: static void _sort(Request& r, MethodParams& params) {
1037: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1038:
1.339 moko 1039: bool reverse=params.count()>1 /*..[desc|asc|]*/ && params.as_no_junction(1, "order must not be code").as_string()=="desc"; // default=asc
1.32 paf 1040:
1.182 paf 1041: Table& old_table=GET_SELF(r, VTable).table();
1042: Table& new_table=*new Table(old_table.columns());
1.34 paf 1043:
1.344 moko 1044: Table_seq_item* seq=new Table_seq_item[old_table.count()];
1.34 paf 1045: int i;
1046:
1047: // calculate key values
1048: bool key_values_are_strings=true;
1.182 paf 1049: int old_count=old_table.count();
1050: for(i=0; i<old_count; i++) {
1.101 parser 1051: old_table.set_current(i);
1.32 paf 1052: // calculate key value
1.182 paf 1053: seq[i].row=old_table[i];
1.335 moko 1054: Value& value=r.process(key_maker);
1.34 paf 1055: if(i==0) // determining key values type by first one
1056: key_values_are_strings=value.is_string();
1057:
1058: if(key_values_are_strings)
1059: seq[i].value.c_str=value.as_string().cstr();
1060: else
1.287 moko 1061: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1062: }
1.265 misha 1063:
1064: // @todo: handle this elsewhere
1065: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1066: for(i=0; i<old_count; i++)
1067: if(*seq[i].value.c_str)
1.332 moko 1068: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), pa_UTF8_charset).cstr();
1.265 misha 1069: }
1070:
1.266 misha 1071: // sort keys
1.295 moko 1072: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1073:
1.34 paf 1074: // reorder table as they require in 'seq'
1.182 paf 1075: for(i=0; i<old_count; i++)
1076: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1077:
1078: delete[] seq;
1.32 paf 1079:
1.116 parser 1080: // replace any previous table value
1.182 paf 1081: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1082: }
1083:
1.176 paf 1084: #ifndef DOXYGEN
1.182 paf 1085: struct Expression_is_true_info {
1.176 paf 1086: Request* r;
1087: Value* expression_code;
1088: };
1089: #endif
1.275 misha 1090:
1.191 paf 1091: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1.335 moko 1092: return info->r->process(*info->expression_code).as_bool();
1.176 paf 1093: }
1.275 misha 1094:
1095: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1096: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1097: Table::Action_options o=get_action_options(r, params, 1, table);
1098: if(params.count()>2)
1099: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1100: Expression_is_true_info info={&r, &expression_code};
1101: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1102: }
1.275 misha 1103:
1104: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1105: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1106: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1107: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1108: return table.locate(name, value, o);
1109: }
1.275 misha 1110:
1.182 paf 1111: static void _locate(Request& r, MethodParams& params) {
1112: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1113:
1.291 moko 1114: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1115: _locate_expression(table, r, params) :
1116: _locate_name_value(table, r, params);
1.338 moko 1117: r.write(VBool::get(result));
1.145 paf 1118: }
1.182 paf 1119:
1120:
1.191 paf 1121: static void _flip(Request& r, MethodParams&) {
1.182 paf 1122: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1123: Table& new_table=*new Table(0);
1.182 paf 1124: if(size_t old_count=old_table.count())
1.310 moko 1125: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1126: for(size_t column=0; column<old_cols; column++) {
1127: Table::element_type new_row(new ArrayString(old_count));
1128: for(size_t i=0; i<old_count; i++) {
1129: Table::element_type old_row=old_table[i];
1130: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1131: }
1.182 paf 1132: new_table+=new_row;
1.39 paf 1133: }
1134:
1.338 moko 1135: r.write(*new VTable(&new_table));
1.39 paf 1136: }
1137:
1.293 misha 1138: static void _foreach(Request& r, MethodParams& params) {
1139: InCycle temp(r);
1140:
1.331 moko 1141: const String* rownum_var_name=¶ms.as_string(0, "rownum-var name must be string");
1142: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
1.293 misha 1143:
1144: Value& body_code=params.as_junction(2, "body must be code");
1145:
1146: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1147:
1148: Table& table=GET_SELF(r, VTable).table();
1149: size_t saved_current=table.current();
1150:
1.331 moko 1151: rownum_var_name=rownum_var_name->is_empty()? 0 : rownum_var_name;
1152: value_var_name=value_var_name->is_empty()? 0 : value_var_name;
1.293 misha 1153:
1154: Value* var_context=r.get_method_frame()->caller();
1155:
1156: if(delim_maybe_code) { // delimiter set
1157: bool need_delim=false;
1.316 moko 1158: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1159: table.set_current(row);
1160:
1161: if(rownum_var_name)
1.299 moko 1162: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1163: if(value_var_name)
1.299 moko 1164: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1165:
1.334 moko 1166: Value& sv_processed=r.process(body_code);
1.341 moko 1167: TempSkip4Delimiter skip(r);
1.293 misha 1168:
1169: const String* s_processed=sv_processed.get_string();
1170: if(s_processed && !s_processed->is_empty()) { // we have body
1171: if(need_delim) // need delim & iteration produced string?
1.338 moko 1172: r.write(r.process(*delim_maybe_code));
1.293 misha 1173: else
1174: need_delim=true;
1175: }
1176:
1.338 moko 1177: r.write(sv_processed);
1.293 misha 1178:
1.341 moko 1179: if(skip.check_break())
1.293 misha 1180: break;
1181: }
1182: } else {
1.316 moko 1183: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1184: table.set_current(row);
1185:
1186: if(rownum_var_name)
1.300 moko 1187: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1188: if(value_var_name)
1.300 moko 1189: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1190:
1191: r.process_write(body_code);
1192:
1.341 moko 1193: if(r.check_skip_break())
1.293 misha 1194: break;
1195: }
1196: }
1197: table.set_current(saved_current);
1198: }
1199:
1.309 moko 1200: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1201: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1202: }
1203:
1204: inline Table::element_type row_from_string(Request& r, Value ¶m){
1205: if(!param.is_string() && !param.get_junction())
1206: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1207:
1208: const String& string=r.process_to_string(param);
1.41 paf 1209:
1210: // parse cells
1.182 paf 1211: Table::element_type row=new ArrayString;
1.326 moko 1212: string.split(*row, 0, "\t", String::L_AS_IS);
1.41 paf 1213:
1.309 moko 1214: return row;
1.41 paf 1215: }
1216:
1.309 moko 1217: static void _append(Request& r, MethodParams& params) {
1218: VTable vtable=GET_SELF(r, VTable);
1219: Table& table=vtable.table();
1.306 moko 1220:
1.309 moko 1221: HashStringValue* hash=params[0].get_hash();
1222: if(hash){
1223: table+=new ArrayString();
1224: size_t saved_current=table.current();
1225: table.set_current(table.count()-1);
1226: hash->for_each<VTable*>(update_cell, &vtable);
1227: table.set_current(saved_current);
1228: } else {
1229: table+=row_from_string(r, params[0]);
1230: }
1231: }
1.306 moko 1232:
1.309 moko 1233: static void _insert(Request& r, MethodParams& params) {
1234: VTable vtable=GET_SELF(r, VTable);
1235: Table& table=vtable.table();
1236: HashStringValue* hash=params[0].get_hash();
1237: if(hash){
1238: table.insert(table.current(), new ArrayString());
1239: hash->for_each<VTable*>(update_cell, &vtable);
1240: } else {
1241: table.insert(table.current(), row_from_string(r, params[0]));
1242: }
1.306 moko 1243: }
1244:
1.311 moko 1245: static void _delete(Request& r, MethodParams&) {
1.307 moko 1246: Table& table=GET_SELF(r, VTable).table();
1247: table.remove_current();
1248: }
1249:
1.182 paf 1250: static void join_named_row(Table& src, Table* dest) {
1251: Table::columns_type dest_columns=dest->columns();
1252: size_t dest_columns_count=dest_columns->count();
1253: Table::element_type dest_row(new ArrayString(dest_columns_count));
1254: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1255: const String* src_item=src.item(*dest_columns->get(dest_column));
1256: *dest_row+=src_item?src_item:new String;
1257: }
1258: *dest+=dest_row;
1259: }
1260: static void join_nameless_row(Table& src, Table* dest) {
1261: *dest+=src[src.current()];
1262: }
1263: static void _join(Request& r, MethodParams& params) {
1.288 misha 1264: Table& src=*params.as_table(0, "source");
1.176 paf 1265:
1.268 misha 1266: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1267:
1.182 paf 1268: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1269: if(&src == &dest)
1.318 moko 1270: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1271:
1.193 paf 1272: if(dest.columns()) // dest is named
1.182 paf 1273: src.table_for_each(join_named_row, &dest, o);
1274: else // dest is nameless
1275: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1276: }
1277:
1.94 parser 1278: #ifndef DOXYGEN
1.169 paf 1279: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1280: ArrayString& columns;
1.218 paf 1281: int columns_count;
1.182 paf 1282: ArrayString* row;
1.94 parser 1283: public:
1.182 paf 1284: Table* table;
1285: public:
1286: Table_sql_event_handlers() :
1287: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1288: }
1289:
1.279 misha 1290: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1291: try {
1.274 moko 1292: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1293: return false;
1294: } catch(...) {
1.343 moko 1295: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_column");
1.170 paf 1296: return true;
1297: }
1298: }
1299: bool before_rows(SQL_Error& error) {
1300: try {
1.182 paf 1301: table=new Table(&columns);
1.218 paf 1302: columns_count=columns.count();
1.170 paf 1303: return false;
1304: } catch(...) {
1.343 moko 1305: error=SQL_Error("exception occurred in Table_sql_event_handlers::before_rows");
1.170 paf 1306: return true;
1307: }
1308: }
1309: bool add_row(SQL_Error& error) {
1310: try {
1.218 paf 1311: *table+=row=new ArrayString(columns_count);
1.170 paf 1312: return false;
1313: } catch(...) {
1.343 moko 1314: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row");
1.170 paf 1315: return true;
1316: }
1317: }
1.279 misha 1318: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1319: try {
1.292 misha 1320: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1321: return false;
1322: } catch(...) {
1.343 moko 1323: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row_cell");
1.170 paf 1324: return true;
1325: }
1.94 parser 1326: }
1327: };
1328: #endif
1.204 paf 1329:
1.347 ! moko 1330: static void marshal_bind( HashStringValue::key_type aname, HashStringValue::value_type avalue, SQL_Driver::Placeholder** pptr) {
1.204 paf 1331: SQL_Driver::Placeholder& ph=**pptr;
1332: ph.name=aname.cstr();
1.261 misha 1333: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1334: ph.is_null=avalue->get_class()==void_class;
1335: ph.were_updated=false;
1336:
1337: (*pptr)++;
1338: }
1339:
1340: // not static, used elsewhere
1341: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1342: int hash_count=hash.count();
1.344 moko 1343: placeholders=new(PointerGC) SQL_Driver::Placeholder[hash_count];
1.204 paf 1344: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1345: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1346: return hash_count;
1347: }
1348:
1349: // not static, used elsewhere
1350: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1351: SQL_Driver::Placeholder* ph=placeholders;
1352: for(int i=0; i<placeholder_count; i++, ph++)
1353: if(ph->were_updated) {
1354: Value* value;
1355: if(ph->is_null)
1.248 misha 1356: value=VVoid::get();
1.204 paf 1357: else
1.256 misha 1358: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1359: hash.put(ph->name, value);
1360: }
1361: }
1362:
1.182 paf 1363: static void _sql(Request& r, MethodParams& params) {
1364: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1365:
1.204 paf 1366: HashStringValue* bind=0;
1.244 misha 1367: ulong limit=SQL_NO_LIMIT;
1.100 parser 1368: ulong offset=0;
1.281 misha 1369: if(params.count()>1)
1.288 misha 1370: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1371: int valid_options=0;
1372: if(Value* vbind=options->get(sql_bind_name)) {
1373: valid_options++;
1374: bind=vbind->get_hash();
1375: }
1376: if(Value* vlimit=options->get(sql_limit_name)) {
1377: valid_options++;
1.335 moko 1378: limit=(ulong)r.process(*vlimit).as_double();
1.281 misha 1379: }
1380: if(Value* voffset=options->get(sql_offset_name)) {
1381: valid_options++;
1.335 moko 1382: offset=(ulong)r.process(*voffset).as_double();
1.281 misha 1383: }
1384: if(valid_options!=options->count())
1385: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1386: }
1.49 paf 1387:
1.204 paf 1388: SQL_Driver::Placeholder* placeholders=0;
1389: uint placeholders_count=0;
1390: if(bind)
1391: placeholders_count=marshal_binds(*bind, placeholders);
1392:
1.182 paf 1393: const String& statement_string=r.process_to_string(statement);
1.337 moko 1394: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
1.260 misha 1395:
1.182 paf 1396: Table_sql_event_handlers handlers;
1.294 moko 1397:
1.182 paf 1398: r.connection()->query(
1.203 paf 1399: statement_cstr,
1.208 paf 1400: placeholders_count, placeholders,
1.203 paf 1401: offset, limit,
1.160 paf 1402: handlers,
1403: statement_string);
1.135 paf 1404:
1.204 paf 1405: if(bind)
1406: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1407:
1.182 paf 1408: Table& result=
1409: handlers.table?*handlers.table: // query resulted in table? return it
1410: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1411:
1412: // replace any previous table value
1.182 paf 1413: GET_SELF(r, VTable).set_table(result);
1.49 paf 1414: }
1415:
1.233 misha 1416: static void _columns(Request& r, MethodParams& params) {
1417: const String* column_column_name;
1418: if(params.count()>0)
1419: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1420: else
1421: column_column_name=new String("column");
1.88 parser 1422:
1.182 paf 1423: Table::columns_type result_columns(new ArrayString);
1.233 misha 1424: *result_columns+=column_column_name;
1.182 paf 1425: Table& result_table=*new Table(result_columns);
1.88 parser 1426:
1.182 paf 1427: Table& source_table=GET_SELF(r, VTable).table();
1428: if(Table::columns_type source_columns=source_table.columns()) {
1429: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1430: Table::element_type result_row(new ArrayString);
1431: *result_row+=i.next();
1432: result_table+=result_row;
1.88 parser 1433: }
1434: }
1435:
1.338 moko 1436: r.write(*new VTable(&result_table));
1.88 parser 1437: }
1438:
1.182 paf 1439: static void _select(Request& r, MethodParams& params) {
1.231 misha 1440: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1441:
1.182 paf 1442: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1443:
1.277 moko 1444: int limit=source_table.count();
1.282 misha 1445: int offset=0;
1446: bool reverse=false;
1.278 moko 1447:
1.281 misha 1448: if(params.count()>1)
1449: if(HashStringValue* options=params.as_hash(1)) {
1450: int valid_options=0;
1451: if(Value* vlimit=options->get(sql_limit_name)) {
1452: valid_options++;
1.335 moko 1453: limit=r.process(*vlimit).as_int();
1.281 misha 1454: }
1455: if(Value* voffset=options->get(sql_offset_name)) {
1456: valid_options++;
1.335 moko 1457: offset=r.process(*voffset).as_int();
1.281 misha 1458: }
1459: if(Value* vreverse=options->get(table_reverse_name)) {
1460: valid_options++;
1.335 moko 1461: reverse=r.process(*vreverse).as_bool();
1.281 misha 1462: }
1463: if(valid_options!=options->count())
1.288 misha 1464: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1465: }
1466:
1467: Table& result_table=*new Table(source_table.columns());
1.277 moko 1468:
1.283 misha 1469: size_t size=source_table.count();
1470: if(offset<0)
1471: offset+=size;
1.284 misha 1472: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1473: size_t saved_current=source_table.current();
1474: size_t appended=0;
1475:
1476: if(reverse){
1477: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1478: source_table.set_current(row);
1479:
1.336 moko 1480: bool condition=r.process(vcondition).as_bool();
1.282 misha 1481:
1482: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1483: result_table+=source_table[row];
1484: if(row==0) break;
1485: }
1486: } else {
1487: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1488: source_table.set_current(row);
1.148 paf 1489:
1.336 moko 1490: bool condition=r.process(vcondition).as_bool();
1.277 moko 1491:
1.282 misha 1492: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1493: result_table+=source_table[row];
1494: }
1.277 moko 1495: }
1.282 misha 1496: source_table.set_current(saved_current);
1.148 paf 1497: }
1498:
1.338 moko 1499: r.write(*new VTable(&result_table));
1.148 paf 1500: }
1501:
1.66 paf 1502: // constructor
1503:
1.182 paf 1504: MTable::MTable(): Methoded("table") {
1.142 paf 1505: // ^table::create{data}
1506: // ^table::create[nameless]{data}
1507: // ^table::create[table]
1.236 misha 1508: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1509: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1510: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1511:
1.142 paf 1512: // ^table::load[file]
1513: // ^table::load[nameless;file]
1.168 paf 1514: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1515:
1516: // ^table.save[file]
1517: // ^table.save[nameless;file]
1.188 paf 1518: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1519:
1.224 misha 1520: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1521:
1.297 moko 1522: // ^table.csv-string[]
1523: // ^table.csv-string[nameless]
1524: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1525: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1526:
1.6 paf 1527: // ^table.count[]
1.280 misha 1528: // ^table.count[rows]
1529: // ^table.count[columns]
1530: // ^table.count[cells]
1531: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1532:
1533: // ^table.line[]
1.66 paf 1534: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1535:
1.10 paf 1536: // ^table.offset[]
1.133 paf 1537: // ^table.offset(offset)
1538: // ^table.offset[cur|set](offset)
1539: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1540:
1.10 paf 1541: // ^table.menu{code}
1542: // ^table.menu{code}[delim]
1.66 paf 1543: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1544:
1.239 misha 1545: // ^table.hash[key field name]
1546: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1547: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1548:
1.102 parser 1549: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1550: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1551: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1552:
1.36 paf 1553: // ^table.locate[field;value]
1.176 paf 1554: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1555:
1556: // ^table.flip[]
1.66 paf 1557: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1558:
1.293 misha 1559: // ^table.foreach[row-num;value]{code}
1560: // ^table.foreach[row-num;value]{code}[delim]
1561: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1562:
1.306 moko 1563: // ^table.append{row{tab}data}
1.66 paf 1564: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1565:
1.306 moko 1566: // ^table.insert{row{tab}data} before current row
1567: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1568:
1.307 moko 1569: // ^table.delete[] current row
1570: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1571:
1.157 paf 1572: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1573: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1574:
1575:
1.239 misha 1576: // ^table::sql[query]
1577: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1578: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1579:
1.239 misha 1580: // ^table.columns[[column name]]
1.233 misha 1581: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1582:
1583: // ^table.select(expression) = table
1.277 moko 1584: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1585: }
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