Annotation of parser3/src/classes/table.C, revision 1.366
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.361 moko 4: Copyright (c) 2001-2023 Art. Lebedev Studio (http://www.artlebedev.com)
5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
1.154 paf 6: */
1.221 paf 7:
1.351 moko 8: #include "pa_config_includes.h"
9:
10: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4) && !defined(PA_DEBUG_DISABLE_GC))
11: #include <sstream>
12: #include "../lib/gc/include/gc_allocator.h"
13: #define USE_STRINGSTREAM
14: #endif
15:
1.105 parser 16: #include "classes.h"
1.182 paf 17: #include "pa_vmethod_frame.h"
18:
1.16 paf 19: #include "pa_common.h"
1.1 paf 20: #include "pa_request.h"
1.265 misha 21: #include "pa_charsets.h"
1.1 paf 22: #include "pa_vtable.h"
1.6 paf 23: #include "pa_vint.h"
1.51 paf 24: #include "pa_sql_connection.h"
1.72 paf 25: #include "pa_vbool.h"
1.277 moko 26: #include "pa_array.h"
1.1 paf 27:
1.366 ! moko 28: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.365 2024/09/28 14:37:53 moko Exp $";
1.286 moko 29:
1.66 paf 30: // class
31:
1.182 paf 32: class MTable: public Methoded {
1.66 paf 33: public: // VStateless_class
1.264 misha 34: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 35: public:
1.182 paf 36: MTable();
1.66 paf 37: };
1.1 paf 38:
1.182 paf 39: // global variable
40:
1.313 moko 41: DECLARE_CLASS_VAR(table, new MTable);
1.182 paf 42:
43: // globals
44:
1.347 moko 45: #define TABLE_REVERSE_NAME "reverse"
1.182 paf 46: String table_reverse_name(TABLE_REVERSE_NAME);
47:
1.1 paf 48: // methods
1.66 paf 49:
1.319 moko 50: static Table::Action_options get_action_options(Request& r, MethodParams& params, size_t options_index, const Table& source) {
1.176 paf 51: Table::Action_options result;
1.268 misha 52: if(params.count() <= options_index)
1.182 paf 53: return result;
54:
1.288 misha 55: HashStringValue* options=params.as_hash(options_index);
1.176 paf 56: if(!options)
57: return result;
58:
59: result.defined=true;
60: bool defined_offset=false;
61:
62: int valid_options=0;
1.182 paf 63: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 64: valid_options++;
65: defined_offset=true;
66: if(voffset->is_string()) {
1.182 paf 67: const String& soffset=*voffset->get_string();
1.176 paf 68: if(soffset == "cur")
69: result.offset=source.current();
70: else
1.318 moko 71: throw Exception(PARSER_RUNTIME, &soffset, "must be 'cur' string or expression");
1.364 moko 72: } else {
73: int offset=r.process(*voffset).as_int();
74: result.offset=offset < 0 ? 0 : offset;
75: }
1.176 paf 76: }
1.182 paf 77: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 78: valid_options++;
1.364 moko 79: int limit=r.process(*vlimit).as_int();
80: result.limit=limit < 0 ? 0: limit;
1.176 paf 81: }
1.364 moko 82: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
1.182 paf 83: valid_options++;
1.335 moko 84: result.reverse=r.process(*vreverse).as_bool();
1.182 paf 85: if(result.reverse && !defined_offset)
86: result.offset=source.count()-1;
1.364 moko 87: }
1.182 paf 88:
89: if(valid_options!=options->count())
1.272 misha 90: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 91:
92: return result;
93: }
1.157 paf 94:
1.319 moko 95: struct TableControlChars {
96: char separator; const String* sseparator;
1.236 misha 97: char encloser; const String* sencloser;
98:
1.320 moko 99: char separators[3];
100:
1.319 moko 101: TableControlChars():
102: separator('\t'), sseparator(new String("\t")),
1.236 misha 103: encloser(0), sencloser(0)
1.320 moko 104: {
105: strcpy(separators,"\t\n");
106: }
107:
1.236 misha 108: int load( HashStringValue& options ) {
109: int result=0;
110: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.319 moko 111: sseparator=&vseparator->as_string();
112: if(sseparator->length()!=1)
1.323 moko 113: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one byte character");
1.319 moko 114: separator=sseparator->first_char();
1.320 moko 115: separators[0]=separator;
1.236 misha 116: result++;
117: }
118: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
119: sencloser=&vencloser->as_string();
1.297 moko 120: if(sencloser->is_empty()){
121: encloser=0;
122: } else {
1.325 moko 123: if(sencloser->length()!=1)
124: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be empty or one byte character");
125: encloser=sencloser->first_char();
1.297 moko 126: }
1.236 misha 127: result++;
128: }
129: return result;
130: }
131: };
132:
1.319 moko 133:
1.322 moko 134: struct lsplit_sresult {
135: String* piece;
136: char delim;
137:
138: lsplit_sresult() : piece(0), delim(0){}
139:
140: operator bool() { return piece!=0; }
141:
142: void append(String *str){
143: if(piece)
144: *piece << *str;
145: else
146: piece = str;
147: }
148: };
149:
150: class StringSplitHelper : public String {
151: public:
152: char* base;
153:
154: StringSplitHelper(String astring) : String(astring), base(cstrm()) {}
155:
156: bool check_lang(const char *pos){
157: return langs.check_lang(L_AS_IS, pos-base, 1);
158: }
159:
160: String *extract(char *pos){
161: String *result=new String;
1.330 moko 162: if(size_t len=strlen(pos)){
163: // first: their langs
164: result->langs.append(result->body, langs, pos-base, len);
165: // next: letters themselves
166: result->body=Body(pos);
167: }
1.322 moko 168: return result;
169: }
170: };
171:
172: inline lsplit_sresult lsplit(char* *string_ref, const char* delims, StringSplitHelper& helper) {
173: lsplit_sresult result;
174: if(char *pos=*string_ref) {
1.327 moko 175: while(pos=strpbrk(pos, delims)) {
176: if(helper.check_lang(pos)){
177: result.delim=*pos;
178: *pos=0;
1.322 moko 179: result.piece=helper.extract(*string_ref);
1.327 moko 180: *string_ref=pos+1;
1.322 moko 181: return result;
182: }
1.327 moko 183: pos++;
1.322 moko 184: }
185: result.piece=helper.extract(*string_ref);
186: *string_ref=0;
187: }
188: return result;
189: }
190:
191: static lsplit_sresult lsplit(char** string_ref, const char* delims, char encloser, StringSplitHelper& helper) {
192: lsplit_sresult result;
193:
194: if(char *pos=*string_ref) {
195: if(encloser && *pos==encloser && helper.check_lang(pos)) {
196: *string_ref=++pos;
197:
198: // we are enclosed, searching for second encloser
199: while(1) {
1.328 moko 200: if(pos=strchr(pos, encloser)){
201: if(helper.check_lang(pos)){
202: *(pos++)=0;
1.322 moko 203: result.append(helper.extract(*string_ref));
1.328 moko 204: if(*pos==encloser && helper.check_lang(pos)){ // double-encloser stands for encloser
1.333 moko 205: *string_ref=pos;
1.322 moko 206: } else {
1.328 moko 207: *string_ref=pos;
1.322 moko 208: break;
209: }
210: }
1.333 moko 211: pos++;
1.327 moko 212: } else {
1.322 moko 213: result.append(helper.extract(*string_ref));
214: *string_ref=0;
215: return result;
216: }
217: }
218:
219: // we are no longer enclosed, searching for delimiter
1.328 moko 220: while(pos=strpbrk(pos, delims)) {
221: if(helper.check_lang(pos)){
222: result.delim=*pos;
223: if(pos>*string_ref){
224: *pos=0;
1.322 moko 225: result.append(helper.extract(*string_ref));
226: }
1.328 moko 227: *string_ref=pos+1;
1.322 moko 228: return result;
229: }
1.328 moko 230: pos++;
1.322 moko 231: }
232: result.append(helper.extract(*string_ref));
233: *string_ref=0;
234: } else
235: return lsplit(string_ref, delims, helper);
236: }
237: return result;
238: }
239:
240: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
241: if(*data_ref) {
242: while(**data_ref == '\n' && helper.check_lang(*data_ref))
243: (*data_ref)++;
244: }
245: }
246:
1.182 paf 247: static void _create(Request& r, MethodParams& params) {
1.157 paf 248: // clone/copy part?
1.182 paf 249: if(Table *source=params[0].get_table()) {
1.268 misha 250: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 251: if(params.count()>2)
252: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 253: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 254: return;
255: }
1.142 paf 256:
1.236 misha 257: size_t data_param_index=0;
258: bool nameless=false;
259:
260: if(params.count()>1) {
261: if(params[0].is_string()){ // can be nameless only
1.365 moko 262: const String& snameless=params.as_string(0, "called with more than 1 param, first param may be only string 'nameless' or junction");
1.236 misha 263: if(snameless!="nameless")
1.365 moko 264: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more than 1 param, first param may be only 'nameless'");
1.236 misha 265: nameless=true;
266: data_param_index++;
267: }
268: }
269:
270: HashStringValue *options=0;
1.319 moko 271: TableControlChars control_chars;
1.236 misha 272:
273: size_t options_param_index=data_param_index+1;
1.322 moko 274: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.324 moko 275: if(control_chars.load(*options)!=options->count())
276: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.236 misha 277: }
278:
279: // data
1.322 moko 280: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
281: char *data=sdata.base;
1.44 paf 282:
283: // parse columns
1.182 paf 284: Table::columns_type columns;
1.322 moko 285: if(nameless) {
286: columns=0; // nameless
1.21 paf 287: } else {
1.322 moko 288: columns=new ArrayString;
289: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
290: *columns+=sr.piece;
291: if(sr.delim=='\n')
292: break;
1.182 paf 293: }
1.44 paf 294: }
1.322 moko 295:
296: Table& table=*new Table(columns);
297: int columns_count=columns ? columns->count(): 0;
1.44 paf 298:
299: // parse cells
1.322 moko 300: Table::element_type row(new ArrayString(columns_count));
301: skip_clean_empty_lines(&data, sdata);
302: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
303: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
304: break;
305: *row+=sr.piece;
306: if(sr.delim=='\n') {
307: table+=row;
308: row=new ArrayString(columns_count);
309: skip_clean_empty_lines(&data, sdata);
310: }
311: }
312: // last line [if without \n]
313: if(row->count())
1.182 paf 314: table+=row;
1.322 moko 315:
1.44 paf 316: // replace any previous table value
1.182 paf 317: GET_SELF(r, VTable).set_table(table);
1.44 paf 318: }
319:
1.187 paf 320: struct lsplit_result {
321: char* piece;
322: char delim;
323:
1.321 moko 324: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 325: operator bool() { return piece!=0; }
326: };
327:
1.321 moko 328: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
329: lsplit_result result(*string_ref);
330: if(result.piece) {
331: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 332: result.delim=*v;
333: *v=0;
1.321 moko 334: *string_ref=v+1;
1.187 paf 335: return result;
336: }
1.322 moko 337: *string_ref=0;
1.273 misha 338: }
339: return result;
1.187 paf 340: }
341:
1.320 moko 342: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 343: lsplit_result result(*string_ref);
1.187 paf 344:
1.321 moko 345: if(result.piece) {
346: if(encloser && *result.piece==encloser) {
347: result.piece++;
1.187 paf 348:
1.321 moko 349: char c;
1.187 paf 350: char *read;
351: char *write;
1.321 moko 352: write=read=result.piece;
353:
1.290 moko 354: // we are enclosed, searching for second encloser
355: while(c=*read++) {
1.187 paf 356: if(c==encloser) {
1.290 moko 357: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 358: read++;
1.290 moko 359: else
360: break; // note: skipping encloser
1.187 paf 361: }
362: *write++=c;
363: }
1.321 moko 364:
1.329 moko 365: // we are no longer enclosed, searching for delimiter
1.290 moko 366: while(c=*read++) {
1.320 moko 367: if(c==delims[0] || c==delims[1]) {
1.290 moko 368: result.delim=c;
369: break;
1.329 moko 370: } else
1.290 moko 371: *write++=c;
372: }
1.321 moko 373:
1.187 paf 374: *write=0; // terminate
1.321 moko 375: *string_ref=c ? read : 0;
1.187 paf 376: return result;
377: } else
1.320 moko 378: return lsplit(string_ref, delims);
1.273 misha 379: }
380: return result;
1.187 paf 381: }
382:
383: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 moko 384: while(*data_ref) {
385: if(**data_ref == '\n'){
386: (*data_ref)++;
387: } else {
388: if(**data_ref == '#' )
389: /*nowhere=*/getrow(data_ref);
390: else
391: break;
1.187 paf 392: }
393: }
394: }
395:
1.273 misha 396: static void skip_empty_lines( char** data_ref ) {
1.322 moko 397: if(*data_ref) {
398: while(**data_ref == '\n')
399: (*data_ref)++;
1.273 misha 400: }
401: }
402:
403: typedef void (*Skip_lines_action)(char** data_ref);
404:
1.182 paf 405: static void _load(Request& r, MethodParams& params) {
1.232 misha 406: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 407: int filename_param_index=0;
408: bool nameless=first_param=="nameless";
409: if(nameless)
410: filename_param_index++;
1.182 paf 411: size_t options_param_index=filename_param_index+1;
1.186 paf 412:
413: HashStringValue *options=0;
1.319 moko 414: TableControlChars control_chars;
1.349 moko 415: if(options_param_index<params.count() && (options=params.as_hash(options_param_index)))
1.319 moko 416: control_chars.load(*options);
1.186 paf 417:
1.44 paf 418: // loading text
1.350 moko 419: char *data=file_load_text(r, r.full_disk_path(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)), true, options);
1.44 paf 420:
1.319 moko 421: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 422:
1.1 paf 423: // parse columns
1.182 paf 424: Table::columns_type columns;
1.168 paf 425: if(nameless) {
1.322 moko 426: columns=0; // nameless
1.1 paf 427: } else {
1.322 moko 428: columns=new ArrayString;
1.1 paf 429:
1.273 misha 430: skip_lines_action(&data);
1.320 moko 431: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 432: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 433: if(sr.delim=='\n')
434: break;
1.139 paf 435: }
1.1 paf 436: }
1.187 paf 437:
438: Table& table=*new Table(columns);
1.322 moko 439: int columns_count=columns ? columns->count(): 0;
1.1 paf 440:
441: // parse cells
1.218 paf 442: Table::element_type row(new ArrayString(columns_count));
1.273 misha 443: skip_lines_action(&data);
1.320 moko 444: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 445: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
446: break;
1.256 misha 447: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 448: if(sr.delim=='\n') {
449: table+=row;
1.218 paf 450: row=new ArrayString(columns_count);
1.273 misha 451: skip_lines_action(&data);
1.1 paf 452: }
1.187 paf 453: }
454: // last line [if without \n]
455: if(row->count())
1.1 paf 456: table+=row;
1.187 paf 457:
1.1 paf 458: // replace any previous table value
1.182 paf 459: GET_SELF(r, VTable).set_table(table);
1.1 paf 460: }
1.2 paf 461:
1.297 moko 462: #ifdef USE_STRINGSTREAM
1.269 misha 463:
464: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
465: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
466:
1.298 moko 467: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 468: if(from){
1.257 misha 469: to<<encloser;
1.188 paf 470: // while we have 'encloser'...
1.189 paf 471: size_t pos_after=0;
1.297 moko 472: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 473: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 474: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 475: to<<encloser; // doubling encloser
1.188 paf 476: }
477: // last piece
1.297 moko 478: size_t from_length=from->length();
1.188 paf 479: if(pos_after<from_length)
1.297 moko 480: to<<from->mid(pos_after, from_length).cstr();
481: to<<encloser;
482: } else {
483: to<<encloser<<encloser;
484: }
485: }
486:
1.319 moko 487: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 488: if(output_column_names) {
489: if(table.columns()) { // named table
1.319 moko 490: if(control_chars.encloser){
1.362 moko 491: for(Array_iterator<const String*> i(*table.columns()); i; ) {
1.319 moko 492: enclose( result, i.next(), control_chars.encloser );
1.362 moko 493: if(i)
1.319 moko 494: result<<control_chars.separator;
1.297 moko 495: }
496: } else {
1.362 moko 497: for(Array_iterator<const String*> i(*table.columns()); i; ) {
1.297 moko 498: result<<i.next()->cstr();
1.362 moko 499: if(i)
1.319 moko 500: result<<control_chars.separator;
1.297 moko 501: }
502: }
503: } else { // nameless table [we were asked to output column names]
504: if(int lsize=table.count()?table[0]->count():0)
505: for(int column=0; column<lsize; column++) {
1.319 moko 506: if(control_chars.encloser) {
507: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 508: } else {
509: result<<column;
510: }
511: if(column<lsize-1){
1.319 moko 512: result<<control_chars.separator;
1.297 moko 513: }
514: }
515: else
516: result<<"empty nameless table";
517: }
518: result<<'\n';
519: }
1.188 paf 520:
1.297 moko 521: // process data lines
522: Array_iterator<ArrayString*> i(table);
1.319 moko 523: if(control_chars.encloser){
1.362 moko 524: while(i) {
525: for(Array_iterator<const String*> c(*i.next()); c; ) {
1.319 moko 526: enclose( result, c.next(), control_chars.encloser );
1.362 moko 527: if(c)
1.319 moko 528: result<<control_chars.separator;
1.297 moko 529: }
530: result<<'\n';
531: }
532: } else {
1.362 moko 533: while(i) {
534: for(Array_iterator<const String*> c(*i.next()); c; ) {
1.297 moko 535: result<<c.next()->cstr();
1.362 moko 536: if(c)
1.319 moko 537: result<<control_chars.separator;
1.297 moko 538: }
539: result<<'\n';
540: }
541: }
1.188 paf 542: }
543:
1.241 misha 544: #else
545:
1.298 moko 546: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 547: if(from){
1.257 misha 548: to<<*sencloser;
1.224 misha 549: // while we have 'encloser'...
550: size_t pos_after=0;
1.297 moko 551: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 552: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 553: to<<from->mid(pos_after, pos_before);
1.257 misha 554: to<<*sencloser; // doubling encloser
1.224 misha 555: }
556: // last piece
1.297 moko 557: size_t from_length=from->length();
1.224 misha 558: if(pos_after<from_length)
1.297 moko 559: to<<from->mid(pos_after, from_length);
1.257 misha 560: to<<*sencloser;
1.297 moko 561: } else {
562: to<<*sencloser<<*sencloser;
563: }
1.224 misha 564: }
565:
1.319 moko 566: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 567: if(output_column_names) {
568: if(table.columns()) { // named table
1.319 moko 569: if(control_chars.encloser) {
1.362 moko 570: for(Array_iterator<const String*> i(*table.columns()); i; ) {
1.319 moko 571: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.362 moko 572: if(i)
1.319 moko 573: result<<*control_chars.sseparator;
1.297 moko 574: }
575: } else {
1.362 moko 576: for(Array_iterator<const String*> i(*table.columns()); i; ) {
1.297 moko 577: result<<*i.next();
1.362 moko 578: if(i)
1.319 moko 579: result<<*control_chars.sseparator;
1.297 moko 580: }
581: }
582: } else { // nameless table [we were asked to output column names]
583: if(int lsize=table.count()?table[0]->count():0)
584: for(int column=0; column<lsize; column++) {
1.319 moko 585: if(control_chars.encloser) {
1.363 moko 586: result<<*control_chars.sencloser<<pa_uitoa(column)<<*control_chars.sencloser;
1.298 moko 587: } else {
1.363 moko 588: result<<pa_uitoa(column);
1.298 moko 589: }
590: if(column<lsize-1){
1.319 moko 591: result<<*control_chars.sseparator;
1.298 moko 592: }
1.297 moko 593: }
594: else
595: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
596: }
597: result.append_know_length("\n", 1, String::L_CLEAN);
598: }
599:
600: // data lines
601: Array_iterator<ArrayString*> i(table);
1.319 moko 602: if(control_chars.encloser){
1.362 moko 603: while(i) {
604: for(Array_iterator<const String*> c(*i.next()); c; ) {
1.319 moko 605: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.362 moko 606: if(c)
1.319 moko 607: result<<*control_chars.sseparator;
1.297 moko 608: }
609: result.append_know_length("\n", 1, String::L_CLEAN);
610: }
611: } else {
1.362 moko 612: while(i) {
613: for(Array_iterator<const String*> c(*i.next()); c; ) {
1.297 moko 614: result<<*c.next();
1.362 moko 615: if(c)
1.319 moko 616: result<<*control_chars.sseparator;
1.297 moko 617: }
618: result.append_know_length("\n", 1, String::L_CLEAN);
619: }
620: }
621: }
1.257 misha 622: #endif // don't use stringstream
1.241 misha 623:
1.297 moko 624:
1.241 misha 625: static void _save(Request& r, MethodParams& params) {
1.237 misha 626: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 627: size_t param_index=1;
628:
629: bool do_append=false;
630: bool output_column_names=true;
631:
632: // mode?
633: if(first_arg=="append")
634: do_append=true;
635: else if(first_arg=="nameless")
636: output_column_names=false;
637: else
638: --param_index;
639:
1.232 misha 640: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.350 moko 641: String file_spec=r.full_disk_path(file_name);
1.246 misha 642:
643: if(do_append && file_exist(file_spec))
644: output_column_names=false;
1.188 paf 645:
1.319 moko 646: TableControlChars control_chars;
1.281 misha 647: if(param_index<params.count())
1.288 misha 648: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 649: int valid_options=control_chars.load(*options);
1.281 misha 650: if(valid_options!=options->count())
651: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 652: }
1.281 misha 653:
1.188 paf 654: if(param_index<params.count())
1.318 moko 655: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 656:
1.182 paf 657: Table& table=GET_SELF(r, VTable).table();
1.31 paf 658:
1.297 moko 659: #ifdef USE_STRINGSTREAM
1.269 misha 660: pa_stringstream ost(std::stringstream::out);
1.257 misha 661:
1.319 moko 662: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 663:
664: // write
1.269 misha 665: pa_string data=ost.str();
1.257 misha 666: const char* data_cstr=data.c_str();
1.267 misha 667: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 668: #else
1.257 misha 669: String sdata;
1.224 misha 670:
1.319 moko 671: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 672:
673: // write
1.257 misha 674: const char* data_cstr=sdata.cstr();
1.297 moko 675: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 676: if(*data_cstr) // not empty (when empty it's not heap memory)
677: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 678: #endif
679: }
680:
681: static void _csv_string(Request& r, MethodParams& params) {
682: bool output_column_names=true;
683: size_t param_index=0;
684: if(params.count()>0 && params[0].is_string()) {
685: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
686: output_column_names=false;
687: param_index++;
688: } else {
1.318 moko 689: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 690: }
1.224 misha 691: }
1.240 misha 692:
1.319 moko 693: TableControlChars control_chars;
1.297 moko 694: if(param_index<params.count())
695: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 696: int valid_options=control_chars.load(*options);
1.297 moko 697: if(valid_options!=options->count())
698: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
699: }
700:
701: Table& table=GET_SELF(r, VTable).table();
702:
703: #ifdef USE_STRINGSTREAM
704: pa_stringstream ost(std::stringstream::out);
705:
1.319 moko 706: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 707:
1.338 moko 708: r.write(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
1.297 moko 709: #else
710: String sdata;
711:
1.319 moko 712: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 713:
1.338 moko 714: r.write(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
1.297 moko 715: #endif
1.224 misha 716: }
717:
1.280 misha 718: static void _count(Request& r, MethodParams& params) {
719: Table& table=GET_SELF(r, VTable).table();
720: size_t result=0;
721: if(params.count()) {
722: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
723: if(param == "columns")
1.310 moko 724: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 725: else if(param == "cells")
726: result = table.count() ? table[table.current()]->count() : 0;
727: else if(param == "rows") // synonim for ^table.count[]
728: result = table.count();
729: else
730: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
731: } else
732: result = table.count();
733:
1.338 moko 734: r.write(*new VInt(result));
1.6 paf 735: }
736:
1.182 paf 737: static void _line(Request& r, MethodParams&) {
738: int result=1+GET_SELF(r, VTable).table().current();
1.338 moko 739: r.write(*new VInt(result));
1.6 paf 740: }
741:
1.182 paf 742: static void _offset(Request& r, MethodParams& params) {
743: Table& table=GET_SELF(r, VTable).table();
744: if(params.count()) {
1.133 paf 745: bool absolute=false;
1.182 paf 746: if(params.count()>1) {
747: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 748: if(whence=="cur")
1.134 paf 749: absolute=false;
1.133 paf 750: else if(whence=="set")
1.134 paf 751: absolute=true;
1.133 paf 752: else
1.318 moko 753: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 754: }
1.133 paf 755:
1.211 paf 756: int offset=params.as_int(params.count()-1, "offset must be expression", r);
757: table.offset(absolute, offset);
1.151 paf 758: } else
1.338 moko 759: r.write(*new VInt(table.current()));
1.6 paf 760: }
761:
1.182 paf 762: static void _menu(Request& r, MethodParams& params) {
1.263 misha 763: InCycle temp(r);
1.221 paf 764:
1.182 paf 765: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 766:
1.182 paf 767: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 768:
1.182 paf 769: Table& table=GET_SELF(r, VTable).table();
1.293 misha 770: size_t saved_current=table.current();
1.7 paf 771:
1.251 misha 772: if(delim_maybe_code) { // delimiter set
1.250 misha 773: bool need_delim=false;
1.316 moko 774: for(size_t row=0; row<table.count(); row++) {
1.250 misha 775: table.set_current(row);
776:
1.334 moko 777: Value& sv_processed=r.process(body_code);
1.341 moko 778: TempSkip4Delimiter skip(r);
1.250 misha 779:
780: const String* s_processed=sv_processed.get_string();
1.251 misha 781: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 782: if(need_delim) // need delim & iteration produced string?
1.338 moko 783: r.write(r.process(*delim_maybe_code));
1.250 misha 784: else
785: need_delim=true;
786: }
787:
1.338 moko 788: r.write(sv_processed);
1.242 misha 789:
1.341 moko 790: if(skip.check_break())
1.250 misha 791: break;
792: }
793: } else {
1.316 moko 794: for(size_t row=0; row<table.count(); row++) {
1.250 misha 795: table.set_current(row);
796:
797: r.process_write(body_code);
798:
1.341 moko 799: if(r.check_skip_break())
1.250 misha 800: break;
1.7 paf 801: }
802: }
1.99 parser 803: table.set_current(saved_current);
1.7 paf 804: }
805:
1.110 parser 806: #ifndef DOXYGEN
1.74 paf 807: struct Row_info {
1.166 paf 808: Request *r;
1.74 paf 809: Table *table;
1.182 paf 810: Value* key_code;
811: size_t key_field;
812: Array<int>* value_fields;
1.315 moko 813: Value* value_code;
1.182 paf 814: HashStringValue* hash;
1.174 paf 815: Table2hash_distint distinct;
1.182 paf 816: size_t row;
1.227 misha 817: Table2hash_value_type value_type;
1.74 paf 818: };
1.110 parser 819: #endif
1.182 paf 820: static void table_row_to_hash(Table::element_type row, Row_info *info) {
821: const String* key;
822: if(info->key_code) {
823: info->table->set_current(info->row++); // change context row
1.334 moko 824: Value& sv_processed=info->r->process(*info->key_code);
1.166 paf 825: key=&sv_processed.as_string();
1.227 misha 826: } else {
1.358 moko 827: key=info->key_field < row->count() ? row->get(info->key_field) : 0;
1.227 misha 828: }
1.166 paf 829:
830: if(!key)
831: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 832:
1.243 misha 833: bool exist=false;
834: switch(info->value_type) {
835: case C_STRING: {
1.317 moko 836: if(info->value_fields->count()){
837: size_t index=info->value_fields->get(0);
838: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
839: } else {
840: exist=info->hash->put_dont_replace(*key, VString::empty());
841: }
1.243 misha 842: break;
1.227 misha 843: }
1.243 misha 844: case C_HASH: {
1.182 paf 845: VHash* vhash=new VHash;
846: HashStringValue& hash=vhash->hash();
1.358 moko 847: Table::columns_type columns=info->table->columns();
848: if(info->value_fields){ // selected fields (can be empty)
1.362 moko 849: for(Array_iterator<int> i(*info->value_fields); i; ) {
1.358 moko 850: size_t value_field=i.next();
851: if(value_field<row->count())
1.366 ! moko 852: hash.put(columns ? *columns->get(value_field) : String(pa_uitoa(value_field)), new VString(*row->get(value_field)));
1.358 moko 853: }
854: } else { // all fields
855: for(size_t index=0; index<row->count(); index++) {
1.366 ! moko 856: hash.put(columns && index < columns->count() ? *columns->get(index) : String(pa_uitoa(index)), new VString(*row->get(index)));
1.358 moko 857: }
1.174 paf 858: }
1.227 misha 859: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 860: break;
1.174 paf 861: }
1.243 misha 862: case C_TABLE: {
863: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 864: Table* table;
1.227 misha 865: if(vtable) {
1.243 misha 866: if(info->distinct==D_ILLEGAL) {
867: exist=true;
868: break;
869: }
1.174 paf 870: table=vtable->get_table();
1.227 misha 871: } else {
1.174 paf 872: // no? creating table of same structure as source
1.179 paf 873: Table::Action_options table_options(0, 0);
1.182 paf 874: table=new Table(*info->table, table_options/*no rows, just structure*/);
875: info->hash->put(*key, new VTable(table));
1.174 paf 876: }
1.308 moko 877: Table::element_type row_copy(new ArrayString(row->count()));
878: row_copy->append(*row);
879: *table+=row_copy;
1.243 misha 880: break;
1.174 paf 881: }
1.315 moko 882: case C_CODE: {
883: if(!info->key_code)
884: info->table->set_current(info->row++); // change context row
1.334 moko 885: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code));
1.315 moko 886: break;
887: }
1.74 paf 888: }
1.227 misha 889: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 890: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 891: }
1.235 misha 892:
893: Table2hash_value_type get_value_type(Value& vvalue_type){
894: if(vvalue_type.is_string()) {
895: const String& svalue_type=*vvalue_type.get_string();
896: if(svalue_type == "table"){
897: return C_TABLE;
898: } else if (svalue_type == "string") {
899: return C_STRING;
900: } else if (svalue_type == "hash") {
901: return C_HASH;
902: } else {
1.314 moko 903: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 904: }
905: } else {
1.314 moko 906: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 907: }
908: }
909:
1.315 moko 910: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
911: if(vdistinct.is_string()) {
912: const String& sdistinct=*vdistinct.get_string();
913: if(sdistinct!="tables")
914: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
915: value_type=C_TABLE;
916: return D_FIRST;
917: }
918: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
919: }
920:
1.182 paf 921: static void _hash(Request& r, MethodParams& params) {
922: Table& self_table=GET_SELF(r, VTable).table();
923: VHash& result=*new VHash;
1.358 moko 924:
925: Table2hash_distint distinct=D_ILLEGAL;
926: Table2hash_value_type value_type=C_HASH;
927:
928: int param_index=params.count()-1;
929: if(param_index>0) {
930: if(params[1].get_junction())
931: value_type=C_CODE;
1.226 misha 932:
1.358 moko 933: 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
934: --param_index;
935: int valid_options=0;
936: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
937: valid_options++;
938: distinct=get_distinct(r.process(*vdistinct_code), value_type);
939: }
940: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
941: if(value_type==C_TABLE) // $.distinct[tables] already was specified
942: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
943: if(value_type==C_CODE)
944: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
945: valid_options++;
946: value_type=get_value_type(r.process(*vvalue_type_code));
1.163 paf 947: }
1.238 misha 948:
1.358 moko 949: if(valid_options!=options->count())
950: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
951: }
952: }
1.289 misha 953:
1.358 moko 954: if(param_index==2) // options were specified but not as hash
955: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
1.315 moko 956:
1.358 moko 957: bool value_all=false;
958: Array<int> value_fields;
959: Value* value_code=0;
960:
961: if(param_index==0){ // list of columns wasn't specified
962: if(value_type==C_STRING)
963: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
964:
965: value_all=true; // all columns, including key
966: } else { // list of columns or code was specified
967: if(value_type==C_TABLE)
968: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
969:
970: Value& value_fields_param=params[1];
971: if(value_fields_param.get_junction()){ // code specified
972: value_code=&value_fields_param;
973: } else if(value_fields_param.is_string()) { // one column as string was specified
974: const String &field_name=*value_fields_param.get_string();
975: if(!field_name.is_empty())
976: value_fields+=self_table.column_name2index(field_name, true);
977: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
1.362 moko 978: for(Array_iterator<Table::element_type> i(*value_fields_table); i; ) {
1.358 moko 979: const String& value_field_name =*i.next()->get(0);
980: value_fields +=self_table.column_name2index(value_field_name, true);
1.239 misha 981: }
1.358 moko 982: } else
983: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.74 paf 984:
1.358 moko 985: if(value_type==C_STRING && value_fields.count()>1)
1.365 moko 986: throw Exception(PARSER_RUNTIME, 0, "you can't specify more than one value field with option $.type[string]");
1.358 moko 987: }
988:
989: Value* key_param=¶ms[0];
990: Row_info info={
991: &r,
992: &self_table,
993: /*key_code=*/key_param->get_junction() ? key_param : 0,
994: /*key_field=*/0/*filled below*/,
995: value_all ? NULL : &value_fields,
996: value_code,
997: &result.hash(),
998: distinct,
999: /*row=*/0,
1000: value_type
1001: };
1002: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1003:
1004: int saved_current=self_table.current();
1005: self_table.for_each(table_row_to_hash, &info);
1006: self_table.set_current(saved_current);
1.182 paf 1007:
1.358 moko 1008: result.extract_default();
1.207 paf 1009:
1.338 moko 1010: r.write(result);
1.74 paf 1011: }
1012:
1.110 parser 1013: #ifndef DOXYGEN
1.344 moko 1014: struct Table_seq_item : public PA_Allocated {
1.182 paf 1015: ArrayString* row;
1.34 paf 1016: union {
1.182 paf 1017: const char *c_str;
1.34 paf 1018: double d;
1019: } value;
1.32 paf 1020: };
1.110 parser 1021: #endif
1.34 paf 1022: static int sort_cmp_string(const void *a, const void *b) {
1023: return strcmp(
1.78 paf 1024: static_cast<const Table_seq_item *>(a)->value.c_str,
1025: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1026: );
1027: }
1028: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1029: double va=static_cast<const Table_seq_item *>(a)->value.d;
1030: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1031: if(va<vb)
1032: return -1;
1033: else if(va>vb)
1034: return +1;
1035: else
1036: return 0;
1037: }
1.182 paf 1038: static void _sort(Request& r, MethodParams& params) {
1039: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1040:
1.339 moko 1041: 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 1042:
1.182 paf 1043: Table& old_table=GET_SELF(r, VTable).table();
1044: Table& new_table=*new Table(old_table.columns());
1.34 paf 1045:
1.344 moko 1046: Table_seq_item* seq=new Table_seq_item[old_table.count()];
1.34 paf 1047: int i;
1048:
1049: // calculate key values
1050: bool key_values_are_strings=true;
1.182 paf 1051: int old_count=old_table.count();
1052: for(i=0; i<old_count; i++) {
1.101 parser 1053: old_table.set_current(i);
1.32 paf 1054: // calculate key value
1.182 paf 1055: seq[i].row=old_table[i];
1.335 moko 1056: Value& value=r.process(key_maker);
1.34 paf 1057: if(i==0) // determining key values type by first one
1058: key_values_are_strings=value.is_string();
1059:
1060: if(key_values_are_strings)
1061: seq[i].value.c_str=value.as_string().cstr();
1062: else
1.287 moko 1063: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1064: }
1.265 misha 1065:
1066: // @todo: handle this elsewhere
1067: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1068: for(i=0; i<old_count; i++)
1069: if(*seq[i].value.c_str)
1.332 moko 1070: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), pa_UTF8_charset).cstr();
1.265 misha 1071: }
1072:
1.266 misha 1073: // sort keys
1.295 moko 1074: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1075:
1.34 paf 1076: // reorder table as they require in 'seq'
1.182 paf 1077: for(i=0; i<old_count; i++)
1078: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1079:
1080: delete[] seq;
1.32 paf 1081:
1.116 parser 1082: // replace any previous table value
1.182 paf 1083: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1084: }
1085:
1.176 paf 1086: #ifndef DOXYGEN
1.182 paf 1087: struct Expression_is_true_info {
1.176 paf 1088: Request* r;
1089: Value* expression_code;
1090: };
1091: #endif
1.275 misha 1092:
1.191 paf 1093: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1.335 moko 1094: return info->r->process(*info->expression_code).as_bool();
1.176 paf 1095: }
1.275 misha 1096:
1097: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1098: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1099: Table::Action_options o=get_action_options(r, params, 1, table);
1100: if(params.count()>2)
1101: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1102: Expression_is_true_info info={&r, &expression_code};
1103: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1104: }
1.275 misha 1105:
1106: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1107: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1108: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1109: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1110: return table.locate(name, value, o);
1111: }
1.275 misha 1112:
1.182 paf 1113: static void _locate(Request& r, MethodParams& params) {
1114: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1115:
1.291 moko 1116: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1117: _locate_expression(table, r, params) :
1118: _locate_name_value(table, r, params);
1.338 moko 1119: r.write(VBool::get(result));
1.145 paf 1120: }
1.182 paf 1121:
1122:
1.191 paf 1123: static void _flip(Request& r, MethodParams&) {
1.182 paf 1124: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1125: Table& new_table=*new Table(0);
1.182 paf 1126: if(size_t old_count=old_table.count())
1.310 moko 1127: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1128: for(size_t column=0; column<old_cols; column++) {
1129: Table::element_type new_row(new ArrayString(old_count));
1130: for(size_t i=0; i<old_count; i++) {
1131: Table::element_type old_row=old_table[i];
1132: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1133: }
1.182 paf 1134: new_table+=new_row;
1.39 paf 1135: }
1136:
1.338 moko 1137: r.write(*new VTable(&new_table));
1.39 paf 1138: }
1139:
1.293 misha 1140: static void _foreach(Request& r, MethodParams& params) {
1141: InCycle temp(r);
1142:
1.331 moko 1143: const String* rownum_var_name=¶ms.as_string(0, "rownum-var name must be string");
1144: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
1.293 misha 1145:
1146: Value& body_code=params.as_junction(2, "body must be code");
1147:
1148: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1149:
1150: Table& table=GET_SELF(r, VTable).table();
1151: size_t saved_current=table.current();
1152:
1.331 moko 1153: rownum_var_name=rownum_var_name->is_empty()? 0 : rownum_var_name;
1154: value_var_name=value_var_name->is_empty()? 0 : value_var_name;
1.293 misha 1155:
1156: Value* var_context=r.get_method_frame()->caller();
1157:
1158: if(delim_maybe_code) { // delimiter set
1159: bool need_delim=false;
1.316 moko 1160: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1161: table.set_current(row);
1162:
1163: if(rownum_var_name)
1.363 moko 1164: r.put_element(*var_context, *rownum_var_name, new VString(*new String(pa_uitoa(row), String::L_CLEAN)));
1.293 misha 1165: if(value_var_name)
1.299 moko 1166: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1167:
1.334 moko 1168: Value& sv_processed=r.process(body_code);
1.341 moko 1169: TempSkip4Delimiter skip(r);
1.293 misha 1170:
1171: const String* s_processed=sv_processed.get_string();
1172: if(s_processed && !s_processed->is_empty()) { // we have body
1173: if(need_delim) // need delim & iteration produced string?
1.338 moko 1174: r.write(r.process(*delim_maybe_code));
1.293 misha 1175: else
1176: need_delim=true;
1177: }
1178:
1.338 moko 1179: r.write(sv_processed);
1.293 misha 1180:
1.341 moko 1181: if(skip.check_break())
1.293 misha 1182: break;
1183: }
1184: } else {
1.316 moko 1185: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1186: table.set_current(row);
1187:
1188: if(rownum_var_name)
1.363 moko 1189: r.put_element(*var_context, *rownum_var_name, new VString(*new String(pa_uitoa(row), String::L_CLEAN)));
1.293 misha 1190: if(value_var_name)
1.300 moko 1191: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1192:
1193: r.process_write(body_code);
1194:
1.341 moko 1195: if(r.check_skip_break())
1.293 misha 1196: break;
1197: }
1198: }
1199: table.set_current(saved_current);
1200: }
1201:
1.309 moko 1202: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1203: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1204: }
1205:
1206: inline Table::element_type row_from_string(Request& r, Value ¶m){
1207: if(!param.is_string() && !param.get_junction())
1208: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1209:
1210: const String& string=r.process_to_string(param);
1.41 paf 1211:
1212: // parse cells
1.182 paf 1213: Table::element_type row=new ArrayString;
1.326 moko 1214: string.split(*row, 0, "\t", String::L_AS_IS);
1.41 paf 1215:
1.309 moko 1216: return row;
1.41 paf 1217: }
1218:
1.309 moko 1219: static void _append(Request& r, MethodParams& params) {
1220: VTable vtable=GET_SELF(r, VTable);
1221: Table& table=vtable.table();
1.306 moko 1222:
1.309 moko 1223: HashStringValue* hash=params[0].get_hash();
1224: if(hash){
1225: table+=new ArrayString();
1226: size_t saved_current=table.current();
1227: table.set_current(table.count()-1);
1228: hash->for_each<VTable*>(update_cell, &vtable);
1229: table.set_current(saved_current);
1230: } else {
1231: table+=row_from_string(r, params[0]);
1232: }
1233: }
1.306 moko 1234:
1.309 moko 1235: static void _insert(Request& r, MethodParams& params) {
1236: VTable vtable=GET_SELF(r, VTable);
1237: Table& table=vtable.table();
1238: HashStringValue* hash=params[0].get_hash();
1239: if(hash){
1240: table.insert(table.current(), new ArrayString());
1241: hash->for_each<VTable*>(update_cell, &vtable);
1242: } else {
1243: table.insert(table.current(), row_from_string(r, params[0]));
1244: }
1.306 moko 1245: }
1246:
1.311 moko 1247: static void _delete(Request& r, MethodParams&) {
1.307 moko 1248: Table& table=GET_SELF(r, VTable).table();
1249: table.remove_current();
1250: }
1251:
1.182 paf 1252: static void join_named_row(Table& src, Table* dest) {
1253: Table::columns_type dest_columns=dest->columns();
1254: size_t dest_columns_count=dest_columns->count();
1255: Table::element_type dest_row(new ArrayString(dest_columns_count));
1256: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1257: const String* src_item=src.item(*dest_columns->get(dest_column));
1258: *dest_row+=src_item?src_item:new String;
1259: }
1260: *dest+=dest_row;
1261: }
1262: static void join_nameless_row(Table& src, Table* dest) {
1263: *dest+=src[src.current()];
1264: }
1265: static void _join(Request& r, MethodParams& params) {
1.355 moko 1266: if(Table* src=params.as_table(0, "source")){
1267: Table::Action_options o=get_action_options(r, params, 1, *src);
1.176 paf 1268:
1.355 moko 1269: Table& dest=GET_SELF(r, VTable).table();
1270: if(src == &dest)
1271: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1272:
1273: if(dest.columns()) // dest is named
1274: src->table_for_each(join_named_row, &dest, o);
1275: else // dest is nameless
1276: src->table_for_each(join_nameless_row, &dest, o);
1277: }
1.42 paf 1278: }
1279:
1.94 parser 1280: #ifndef DOXYGEN
1.169 paf 1281: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1282: ArrayString& columns;
1.218 paf 1283: int columns_count;
1.182 paf 1284: ArrayString* row;
1.94 parser 1285: public:
1.182 paf 1286: Table* table;
1287: public:
1288: Table_sql_event_handlers() :
1289: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1290: }
1291:
1.279 misha 1292: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1293: try {
1.274 moko 1294: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1295: return false;
1296: } catch(...) {
1.343 moko 1297: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_column");
1.170 paf 1298: return true;
1299: }
1300: }
1.348 moko 1301: bool before_rows(SQL_Error& error) {
1302: if(table) {
1303: error=SQL_Error("result must contain exactly one table");
1304: return true;
1305: }
1.170 paf 1306: try {
1.182 paf 1307: table=new Table(&columns);
1.218 paf 1308: columns_count=columns.count();
1.170 paf 1309: return false;
1310: } catch(...) {
1.343 moko 1311: error=SQL_Error("exception occurred in Table_sql_event_handlers::before_rows");
1.170 paf 1312: return true;
1313: }
1314: }
1315: bool add_row(SQL_Error& error) {
1316: try {
1.218 paf 1317: *table+=row=new ArrayString(columns_count);
1.170 paf 1318: return false;
1319: } catch(...) {
1.343 moko 1320: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row");
1.170 paf 1321: return true;
1322: }
1323: }
1.279 misha 1324: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1325: try {
1.292 misha 1326: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1327: return false;
1328: } catch(...) {
1.343 moko 1329: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row_cell");
1.170 paf 1330: return true;
1331: }
1.94 parser 1332: }
1333: };
1334: #endif
1.204 paf 1335:
1.347 moko 1336: static void marshal_bind( HashStringValue::key_type aname, HashStringValue::value_type avalue, SQL_Driver::Placeholder** pptr) {
1.204 paf 1337: SQL_Driver::Placeholder& ph=**pptr;
1338: ph.name=aname.cstr();
1.261 misha 1339: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1340: ph.is_null=avalue->get_class()==void_class;
1341: ph.were_updated=false;
1342:
1343: (*pptr)++;
1344: }
1345:
1346: // not static, used elsewhere
1347: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1348: int hash_count=hash.count();
1.344 moko 1349: placeholders=new(PointerGC) SQL_Driver::Placeholder[hash_count];
1.204 paf 1350: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1351: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1352: return hash_count;
1353: }
1354:
1355: // not static, used elsewhere
1356: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1357: SQL_Driver::Placeholder* ph=placeholders;
1358: for(int i=0; i<placeholder_count; i++, ph++)
1359: if(ph->were_updated) {
1360: Value* value;
1361: if(ph->is_null)
1.248 misha 1362: value=VVoid::get();
1.204 paf 1363: else
1.256 misha 1364: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1365: hash.put(ph->name, value);
1366: }
1367: }
1368:
1.182 paf 1369: static void _sql(Request& r, MethodParams& params) {
1370: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1371:
1.204 paf 1372: HashStringValue* bind=0;
1.244 misha 1373: ulong limit=SQL_NO_LIMIT;
1.100 parser 1374: ulong offset=0;
1.281 misha 1375: if(params.count()>1)
1.288 misha 1376: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1377: int valid_options=0;
1378: if(Value* vbind=options->get(sql_bind_name)) {
1379: valid_options++;
1380: bind=vbind->get_hash();
1381: }
1382: if(Value* vlimit=options->get(sql_limit_name)) {
1383: valid_options++;
1.335 moko 1384: limit=(ulong)r.process(*vlimit).as_double();
1.281 misha 1385: }
1386: if(Value* voffset=options->get(sql_offset_name)) {
1387: valid_options++;
1.335 moko 1388: offset=(ulong)r.process(*voffset).as_double();
1.281 misha 1389: }
1390: if(valid_options!=options->count())
1391: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1392: }
1.49 paf 1393:
1.204 paf 1394: SQL_Driver::Placeholder* placeholders=0;
1395: uint placeholders_count=0;
1396: if(bind)
1397: placeholders_count=marshal_binds(*bind, placeholders);
1398:
1.182 paf 1399: const String& statement_string=r.process_to_string(statement);
1.337 moko 1400: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
1.260 misha 1401:
1.182 paf 1402: Table_sql_event_handlers handlers;
1.294 moko 1403:
1.182 paf 1404: r.connection()->query(
1.203 paf 1405: statement_cstr,
1.208 paf 1406: placeholders_count, placeholders,
1.203 paf 1407: offset, limit,
1.160 paf 1408: handlers,
1409: statement_string);
1.135 paf 1410:
1.204 paf 1411: if(bind)
1412: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1413:
1.182 paf 1414: Table& result=
1415: handlers.table?*handlers.table: // query resulted in table? return it
1416: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1417:
1418: // replace any previous table value
1.182 paf 1419: GET_SELF(r, VTable).set_table(result);
1.49 paf 1420: }
1421:
1.233 misha 1422: static void _columns(Request& r, MethodParams& params) {
1423: const String* column_column_name;
1424: if(params.count()>0)
1425: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1426: else
1427: column_column_name=new String("column");
1.88 parser 1428:
1.182 paf 1429: Table::columns_type result_columns(new ArrayString);
1.233 misha 1430: *result_columns+=column_column_name;
1.182 paf 1431: Table& result_table=*new Table(result_columns);
1.88 parser 1432:
1.182 paf 1433: Table& source_table=GET_SELF(r, VTable).table();
1434: if(Table::columns_type source_columns=source_table.columns()) {
1.362 moko 1435: for(Array_iterator<const String*> i(*source_columns); i; ) {
1.182 paf 1436: Table::element_type result_row(new ArrayString);
1437: *result_row+=i.next();
1438: result_table+=result_row;
1.88 parser 1439: }
1440: }
1441:
1.338 moko 1442: r.write(*new VTable(&result_table));
1.88 parser 1443: }
1444:
1.182 paf 1445: static void _select(Request& r, MethodParams& params) {
1.359 moko 1446: InCycle temp(r);
1.231 misha 1447: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1448:
1.182 paf 1449: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1450:
1.277 moko 1451: int limit=source_table.count();
1.282 misha 1452: int offset=0;
1453: bool reverse=false;
1.278 moko 1454:
1.281 misha 1455: if(params.count()>1)
1456: if(HashStringValue* options=params.as_hash(1)) {
1457: int valid_options=0;
1458: if(Value* vlimit=options->get(sql_limit_name)) {
1459: valid_options++;
1.335 moko 1460: limit=r.process(*vlimit).as_int();
1.281 misha 1461: }
1462: if(Value* voffset=options->get(sql_offset_name)) {
1463: valid_options++;
1.335 moko 1464: offset=r.process(*voffset).as_int();
1.281 misha 1465: }
1466: if(Value* vreverse=options->get(table_reverse_name)) {
1467: valid_options++;
1.335 moko 1468: reverse=r.process(*vreverse).as_bool();
1.281 misha 1469: }
1470: if(valid_options!=options->count())
1.288 misha 1471: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1472: }
1473:
1474: Table& result_table=*new Table(source_table.columns());
1.277 moko 1475:
1.283 misha 1476: size_t size=source_table.count();
1477: if(offset<0)
1478: offset+=size;
1.284 misha 1479: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1480: size_t saved_current=source_table.current();
1481: size_t appended=0;
1482:
1483: if(reverse){
1484: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1485: source_table.set_current(row);
1486:
1.336 moko 1487: bool condition=r.process(vcondition).as_bool();
1.282 misha 1488:
1.359 moko 1489: if(r.check_skip_break())
1490: break;
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: if(row==0) break;
1495: }
1496: } else {
1497: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1498: source_table.set_current(row);
1.148 paf 1499:
1.336 moko 1500: bool condition=r.process(vcondition).as_bool();
1.277 moko 1501:
1.359 moko 1502: if(r.check_skip_break())
1503: break;
1504:
1.282 misha 1505: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1506: result_table+=source_table[row];
1507: }
1.277 moko 1508: }
1.282 misha 1509: source_table.set_current(saved_current);
1.148 paf 1510: }
1511:
1.338 moko 1512: r.write(*new VTable(&result_table));
1.148 paf 1513: }
1514:
1.356 moko 1515:
1516: static void _rename(Request& r, MethodParams& params) {
1517: const String* name_from=NULL;
1518: const String* name_to=NULL;
1519: HashStringValue* names=NULL;
1520:
1521: if(params.count()>1){
1522: name_from=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1523: name_to=¶ms.as_string(1, COLUMN_NAME_MUST_BE_STRING);
1524: } else
1.357 moko 1525: names=params.as_hash(0);
1.356 moko 1526:
1527: Table& table=GET_SELF(r, VTable).table();
1528: if(Table::columns_type columns=table.columns()) {
1529: if(names){
1530: for(int i=0; i<columns->count(); i++) {
1531: const String *column = columns->get(i);
1532: if(Value* vto=names->get(*column)){
1.357 moko 1533: if(const String *sto=vto->get_string())
1534: columns->put(i, sto);
1535: else
1.356 moko 1536: throw Exception(PARSER_RUNTIME, column, COLUMN_NAME_MUST_BE_STRING);
1537: }
1538: }
1.357 moko 1539: } else if(name_from){
1.356 moko 1540: for(int i=0; i<columns->count(); i++) {
1541: const String *column = columns->get(i);
1542: if(*column == *name_from)
1543: columns->put(i, name_to);
1544: }
1545: }
1546: table.column_names_init();
1.357 moko 1547: } else
1548: throw Exception(PARSER_RUNTIME, 0, "columns renaming is not supported for nameless tables");
1.356 moko 1549: }
1550:
1.66 paf 1551: // constructor
1552:
1.182 paf 1553: MTable::MTable(): Methoded("table") {
1.142 paf 1554: // ^table::create{data}
1555: // ^table::create[nameless]{data}
1556: // ^table::create[table]
1.236 misha 1557: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1558: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1559: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1560:
1.142 paf 1561: // ^table::load[file]
1562: // ^table::load[nameless;file]
1.168 paf 1563: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1564:
1565: // ^table.save[file]
1566: // ^table.save[nameless;file]
1.188 paf 1567: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1568:
1.224 misha 1569: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1570:
1.297 moko 1571: // ^table.csv-string[]
1572: // ^table.csv-string[nameless]
1573: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1574: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1575:
1.6 paf 1576: // ^table.count[]
1.280 misha 1577: // ^table.count[rows]
1578: // ^table.count[columns]
1579: // ^table.count[cells]
1580: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1581:
1582: // ^table.line[]
1.66 paf 1583: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1584:
1.10 paf 1585: // ^table.offset[]
1.133 paf 1586: // ^table.offset(offset)
1587: // ^table.offset[cur|set](offset)
1588: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1589:
1.10 paf 1590: // ^table.menu{code}
1591: // ^table.menu{code}[delim]
1.66 paf 1592: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1593:
1.239 misha 1594: // ^table.hash[key field name]
1595: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1596: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1597:
1.102 parser 1598: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1599: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1600: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1601:
1.36 paf 1602: // ^table.locate[field;value]
1.176 paf 1603: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1604:
1605: // ^table.flip[]
1.66 paf 1606: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1607:
1.293 misha 1608: // ^table.foreach[row-num;value]{code}
1609: // ^table.foreach[row-num;value]{code}[delim]
1610: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1611:
1.306 moko 1612: // ^table.append{row{tab}data}
1.66 paf 1613: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1614:
1.306 moko 1615: // ^table.insert{row{tab}data} before current row
1616: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1617:
1.307 moko 1618: // ^table.delete[] current row
1619: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1620:
1.157 paf 1621: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1622: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1623:
1624:
1.239 misha 1625: // ^table::sql[query]
1626: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1627: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1628:
1.239 misha 1629: // ^table.columns[[column name]]
1.233 misha 1630: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1631:
1632: // ^table.select(expression) = table
1.277 moko 1633: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.356 moko 1634:
1635: // ^table.rename[column name from;column name to]
1636: // ^table.rename[ $.[column name from][column name to] ... ]
1637: add_native_method("rename", Method::CT_DYNAMIC, _rename, 1, 2);
1.40 paf 1638: }
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