Annotation of parser3/src/classes/table.C, revision 1.355
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.354 moko 4: Copyright (c) 2001-2020 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:
1.351 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:
1.355 ! moko 28: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.354 2020/12/15 17:10:29 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");
1.176 paf 72: } else
1.335 moko 73: result.offset=r.process(*voffset).as_int();
1.176 paf 74: }
1.182 paf 75: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 76: valid_options++;
1.335 moko 77: result.limit=r.process(*vlimit).as_int();
1.176 paf 78: }
1.182 paf 79: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
80: valid_options++;
1.335 moko 81: result.reverse=r.process(*vreverse).as_bool();
1.182 paf 82: if(result.reverse && !defined_offset)
83: result.offset=source.count()-1;
84: }
85:
86: if(valid_options!=options->count())
1.272 misha 87: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 88:
89: return result;
90: }
1.157 paf 91:
1.319 moko 92: struct TableControlChars {
93: char separator; const String* sseparator;
1.236 misha 94: char encloser; const String* sencloser;
95:
1.320 moko 96: char separators[3];
97:
1.319 moko 98: TableControlChars():
99: separator('\t'), sseparator(new String("\t")),
1.236 misha 100: encloser(0), sencloser(0)
1.320 moko 101: {
102: strcpy(separators,"\t\n");
103: }
104:
1.236 misha 105: int load( HashStringValue& options ) {
106: int result=0;
107: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.319 moko 108: sseparator=&vseparator->as_string();
109: if(sseparator->length()!=1)
1.323 moko 110: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one byte character");
1.319 moko 111: separator=sseparator->first_char();
1.320 moko 112: separators[0]=separator;
1.236 misha 113: result++;
114: }
115: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
116: sencloser=&vencloser->as_string();
1.297 moko 117: if(sencloser->is_empty()){
118: encloser=0;
119: } else {
1.325 moko 120: if(sencloser->length()!=1)
121: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be empty or one byte character");
122: encloser=sencloser->first_char();
1.297 moko 123: }
1.236 misha 124: result++;
125: }
126: return result;
127: }
128: };
129:
1.319 moko 130:
1.322 moko 131: struct lsplit_sresult {
132: String* piece;
133: char delim;
134:
135: lsplit_sresult() : piece(0), delim(0){}
136:
137: operator bool() { return piece!=0; }
138:
139: void append(String *str){
140: if(piece)
141: *piece << *str;
142: else
143: piece = str;
144: }
145: };
146:
147: class StringSplitHelper : public String {
148: public:
149: char* base;
150:
151: StringSplitHelper(String astring) : String(astring), base(cstrm()) {}
152:
153: bool check_lang(const char *pos){
154: return langs.check_lang(L_AS_IS, pos-base, 1);
155: }
156:
157: String *extract(char *pos){
158: String *result=new String;
1.330 moko 159: if(size_t len=strlen(pos)){
160: // first: their langs
161: result->langs.append(result->body, langs, pos-base, len);
162: // next: letters themselves
163: result->body=Body(pos);
164: }
1.322 moko 165: return result;
166: }
167: };
168:
169: inline lsplit_sresult lsplit(char* *string_ref, const char* delims, StringSplitHelper& helper) {
170: lsplit_sresult result;
171: if(char *pos=*string_ref) {
1.327 moko 172: while(pos=strpbrk(pos, delims)) {
173: if(helper.check_lang(pos)){
174: result.delim=*pos;
175: *pos=0;
1.322 moko 176: result.piece=helper.extract(*string_ref);
1.327 moko 177: *string_ref=pos+1;
1.322 moko 178: return result;
179: }
1.327 moko 180: pos++;
1.322 moko 181: }
182: result.piece=helper.extract(*string_ref);
183: *string_ref=0;
184: }
185: return result;
186: }
187:
188: static lsplit_sresult lsplit(char** string_ref, const char* delims, char encloser, StringSplitHelper& helper) {
189: lsplit_sresult result;
190:
191: if(char *pos=*string_ref) {
192: if(encloser && *pos==encloser && helper.check_lang(pos)) {
193: *string_ref=++pos;
194:
195: // we are enclosed, searching for second encloser
196: while(1) {
1.328 moko 197: if(pos=strchr(pos, encloser)){
198: if(helper.check_lang(pos)){
199: *(pos++)=0;
1.322 moko 200: result.append(helper.extract(*string_ref));
1.328 moko 201: if(*pos==encloser && helper.check_lang(pos)){ // double-encloser stands for encloser
1.333 moko 202: *string_ref=pos;
1.322 moko 203: } else {
1.328 moko 204: *string_ref=pos;
1.322 moko 205: break;
206: }
207: }
1.333 moko 208: pos++;
1.327 moko 209: } else {
1.322 moko 210: result.append(helper.extract(*string_ref));
211: *string_ref=0;
212: return result;
213: }
214: }
215:
216: // we are no longer enclosed, searching for delimiter
1.328 moko 217: while(pos=strpbrk(pos, delims)) {
218: if(helper.check_lang(pos)){
219: result.delim=*pos;
220: if(pos>*string_ref){
221: *pos=0;
1.322 moko 222: result.append(helper.extract(*string_ref));
223: }
1.328 moko 224: *string_ref=pos+1;
1.322 moko 225: return result;
226: }
1.328 moko 227: pos++;
1.322 moko 228: }
229: result.append(helper.extract(*string_ref));
230: *string_ref=0;
231: } else
232: return lsplit(string_ref, delims, helper);
233: }
234: return result;
235: }
236:
237: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
238: if(*data_ref) {
239: while(**data_ref == '\n' && helper.check_lang(*data_ref))
240: (*data_ref)++;
241: }
242: }
243:
1.182 paf 244: static void _create(Request& r, MethodParams& params) {
1.157 paf 245: // clone/copy part?
1.182 paf 246: if(Table *source=params[0].get_table()) {
1.268 misha 247: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 248: if(params.count()>2)
249: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 250: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 251: return;
252: }
1.142 paf 253:
1.236 misha 254: size_t data_param_index=0;
255: bool nameless=false;
256:
257: if(params.count()>1) {
258: if(params[0].is_string()){ // can be nameless only
259: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
260: if(snameless!="nameless")
1.318 moko 261: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 262: nameless=true;
263: data_param_index++;
264: }
265: }
266:
267: HashStringValue *options=0;
1.319 moko 268: TableControlChars control_chars;
1.236 misha 269:
270: size_t options_param_index=data_param_index+1;
1.322 moko 271: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.324 moko 272: if(control_chars.load(*options)!=options->count())
273: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.236 misha 274: }
275:
276: // data
1.322 moko 277: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
278: char *data=sdata.base;
1.44 paf 279:
280: // parse columns
1.182 paf 281: Table::columns_type columns;
1.322 moko 282: if(nameless) {
283: columns=0; // nameless
1.21 paf 284: } else {
1.322 moko 285: columns=new ArrayString;
286: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
287: *columns+=sr.piece;
288: if(sr.delim=='\n')
289: break;
1.182 paf 290: }
1.44 paf 291: }
1.322 moko 292:
293: Table& table=*new Table(columns);
294: int columns_count=columns ? columns->count(): 0;
1.44 paf 295:
296: // parse cells
1.322 moko 297: Table::element_type row(new ArrayString(columns_count));
298: skip_clean_empty_lines(&data, sdata);
299: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
300: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
301: break;
302: *row+=sr.piece;
303: if(sr.delim=='\n') {
304: table+=row;
305: row=new ArrayString(columns_count);
306: skip_clean_empty_lines(&data, sdata);
307: }
308: }
309: // last line [if without \n]
310: if(row->count())
1.182 paf 311: table+=row;
1.322 moko 312:
1.44 paf 313: // replace any previous table value
1.182 paf 314: GET_SELF(r, VTable).set_table(table);
1.44 paf 315: }
316:
1.187 paf 317: struct lsplit_result {
318: char* piece;
319: char delim;
320:
1.321 moko 321: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 322: operator bool() { return piece!=0; }
323: };
324:
1.321 moko 325: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
326: lsplit_result result(*string_ref);
327: if(result.piece) {
328: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 329: result.delim=*v;
330: *v=0;
1.321 moko 331: *string_ref=v+1;
1.187 paf 332: return result;
333: }
1.322 moko 334: *string_ref=0;
1.273 misha 335: }
336: return result;
1.187 paf 337: }
338:
1.320 moko 339: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 340: lsplit_result result(*string_ref);
1.187 paf 341:
1.321 moko 342: if(result.piece) {
343: if(encloser && *result.piece==encloser) {
344: result.piece++;
1.187 paf 345:
1.321 moko 346: char c;
1.187 paf 347: char *read;
348: char *write;
1.321 moko 349: write=read=result.piece;
350:
1.290 moko 351: // we are enclosed, searching for second encloser
352: while(c=*read++) {
1.187 paf 353: if(c==encloser) {
1.290 moko 354: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 355: read++;
1.290 moko 356: else
357: break; // note: skipping encloser
1.187 paf 358: }
359: *write++=c;
360: }
1.321 moko 361:
1.329 moko 362: // we are no longer enclosed, searching for delimiter
1.290 moko 363: while(c=*read++) {
1.320 moko 364: if(c==delims[0] || c==delims[1]) {
1.290 moko 365: result.delim=c;
366: break;
1.329 moko 367: } else
1.290 moko 368: *write++=c;
369: }
1.321 moko 370:
1.187 paf 371: *write=0; // terminate
1.321 moko 372: *string_ref=c ? read : 0;
1.187 paf 373: return result;
374: } else
1.320 moko 375: return lsplit(string_ref, delims);
1.273 misha 376: }
377: return result;
1.187 paf 378: }
379:
380: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 moko 381: while(*data_ref) {
382: if(**data_ref == '\n'){
383: (*data_ref)++;
384: } else {
385: if(**data_ref == '#' )
386: /*nowhere=*/getrow(data_ref);
387: else
388: break;
1.187 paf 389: }
390: }
391: }
392:
1.273 misha 393: static void skip_empty_lines( char** data_ref ) {
1.322 moko 394: if(*data_ref) {
395: while(**data_ref == '\n')
396: (*data_ref)++;
1.273 misha 397: }
398: }
399:
400: typedef void (*Skip_lines_action)(char** data_ref);
401:
1.182 paf 402: static void _load(Request& r, MethodParams& params) {
1.232 misha 403: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 404: int filename_param_index=0;
405: bool nameless=first_param=="nameless";
406: if(nameless)
407: filename_param_index++;
1.182 paf 408: size_t options_param_index=filename_param_index+1;
1.186 paf 409:
410: HashStringValue *options=0;
1.319 moko 411: TableControlChars control_chars;
1.349 moko 412: if(options_param_index<params.count() && (options=params.as_hash(options_param_index)))
1.319 moko 413: control_chars.load(*options);
1.186 paf 414:
1.44 paf 415: // loading text
1.350 moko 416: 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 417:
1.319 moko 418: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 419:
1.1 paf 420: // parse columns
1.182 paf 421: Table::columns_type columns;
1.168 paf 422: if(nameless) {
1.322 moko 423: columns=0; // nameless
1.1 paf 424: } else {
1.322 moko 425: columns=new ArrayString;
1.1 paf 426:
1.273 misha 427: skip_lines_action(&data);
1.320 moko 428: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 429: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 430: if(sr.delim=='\n')
431: break;
1.139 paf 432: }
1.1 paf 433: }
1.187 paf 434:
435: Table& table=*new Table(columns);
1.322 moko 436: int columns_count=columns ? columns->count(): 0;
1.1 paf 437:
438: // parse cells
1.218 paf 439: Table::element_type row(new ArrayString(columns_count));
1.273 misha 440: skip_lines_action(&data);
1.320 moko 441: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 442: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
443: break;
1.256 misha 444: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 445: if(sr.delim=='\n') {
446: table+=row;
1.218 paf 447: row=new ArrayString(columns_count);
1.273 misha 448: skip_lines_action(&data);
1.1 paf 449: }
1.187 paf 450: }
451: // last line [if without \n]
452: if(row->count())
1.1 paf 453: table+=row;
1.187 paf 454:
1.1 paf 455: // replace any previous table value
1.182 paf 456: GET_SELF(r, VTable).set_table(table);
1.1 paf 457: }
1.2 paf 458:
1.297 moko 459: #ifdef USE_STRINGSTREAM
1.269 misha 460:
461: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
462: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
463:
1.298 moko 464: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 465: if(from){
1.257 misha 466: to<<encloser;
1.188 paf 467: // while we have 'encloser'...
1.189 paf 468: size_t pos_after=0;
1.297 moko 469: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 470: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 471: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 472: to<<encloser; // doubling encloser
1.188 paf 473: }
474: // last piece
1.297 moko 475: size_t from_length=from->length();
1.188 paf 476: if(pos_after<from_length)
1.297 moko 477: to<<from->mid(pos_after, from_length).cstr();
478: to<<encloser;
479: } else {
480: to<<encloser<<encloser;
481: }
482: }
483:
1.319 moko 484: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 485: if(output_column_names) {
486: if(table.columns()) { // named table
1.319 moko 487: if(control_chars.encloser){
1.297 moko 488: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 489: enclose( result, i.next(), control_chars.encloser );
1.297 moko 490: if(i.has_next())
1.319 moko 491: result<<control_chars.separator;
1.297 moko 492: }
493: } else {
494: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
495: result<<i.next()->cstr();
496: if(i.has_next())
1.319 moko 497: result<<control_chars.separator;
1.297 moko 498: }
499: }
500: } else { // nameless table [we were asked to output column names]
501: if(int lsize=table.count()?table[0]->count():0)
502: for(int column=0; column<lsize; column++) {
1.319 moko 503: if(control_chars.encloser) {
504: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 505: } else {
506: result<<column;
507: }
508: if(column<lsize-1){
1.319 moko 509: result<<control_chars.separator;
1.297 moko 510: }
511: }
512: else
513: result<<"empty nameless table";
514: }
515: result<<'\n';
516: }
1.188 paf 517:
1.297 moko 518: // process data lines
519: Array_iterator<ArrayString*> i(table);
1.319 moko 520: if(control_chars.encloser){
1.297 moko 521: while(i.has_next()) {
522: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 523: enclose( result, c.next(), control_chars.encloser );
1.297 moko 524: if(c.has_next())
1.319 moko 525: result<<control_chars.separator;
1.297 moko 526: }
527: result<<'\n';
528: }
529: } else {
530: while(i.has_next()) {
531: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
532: result<<c.next()->cstr();
533: if(c.has_next())
1.319 moko 534: result<<control_chars.separator;
1.297 moko 535: }
536: result<<'\n';
537: }
538: }
1.188 paf 539: }
540:
1.241 misha 541: #else
542:
1.298 moko 543: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 544: if(from){
1.257 misha 545: to<<*sencloser;
1.224 misha 546: // while we have 'encloser'...
547: size_t pos_after=0;
1.297 moko 548: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 549: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 550: to<<from->mid(pos_after, pos_before);
1.257 misha 551: to<<*sencloser; // doubling encloser
1.224 misha 552: }
553: // last piece
1.297 moko 554: size_t from_length=from->length();
1.224 misha 555: if(pos_after<from_length)
1.297 moko 556: to<<from->mid(pos_after, from_length);
1.257 misha 557: to<<*sencloser;
1.297 moko 558: } else {
559: to<<*sencloser<<*sencloser;
560: }
1.224 misha 561: }
562:
1.319 moko 563: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 564: if(output_column_names) {
565: if(table.columns()) { // named table
1.319 moko 566: if(control_chars.encloser) {
1.297 moko 567: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 568: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 569: if(i.has_next())
1.319 moko 570: result<<*control_chars.sseparator;
1.297 moko 571: }
572: } else {
573: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
574: result<<*i.next();
575: if(i.has_next())
1.319 moko 576: result<<*control_chars.sseparator;
1.297 moko 577: }
578: }
579: } else { // nameless table [we were asked to output column names]
580: if(int lsize=table.count()?table[0]->count():0)
581: for(int column=0; column<lsize; column++) {
1.319 moko 582: if(control_chars.encloser) {
583: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 584: } else {
585: result<<String::Body::Format(column);
586: }
587: if(column<lsize-1){
1.319 moko 588: result<<*control_chars.sseparator;
1.298 moko 589: }
1.297 moko 590: }
591: else
592: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
593: }
594: result.append_know_length("\n", 1, String::L_CLEAN);
595: }
596:
597: // data lines
598: Array_iterator<ArrayString*> i(table);
1.319 moko 599: if(control_chars.encloser){
1.297 moko 600: while(i.has_next()) {
601: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 602: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 603: if(c.has_next())
1.319 moko 604: result<<*control_chars.sseparator;
1.297 moko 605: }
606: result.append_know_length("\n", 1, String::L_CLEAN);
607: }
608: } else {
609: while(i.has_next()) {
610: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
611: result<<*c.next();
612: if(c.has_next())
1.319 moko 613: result<<*control_chars.sseparator;
1.297 moko 614: }
615: result.append_know_length("\n", 1, String::L_CLEAN);
616: }
617: }
618: }
1.257 misha 619: #endif // don't use stringstream
1.241 misha 620:
1.297 moko 621:
1.241 misha 622: static void _save(Request& r, MethodParams& params) {
1.237 misha 623: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 624: size_t param_index=1;
625:
626: bool do_append=false;
627: bool output_column_names=true;
628:
629: // mode?
630: if(first_arg=="append")
631: do_append=true;
632: else if(first_arg=="nameless")
633: output_column_names=false;
634: else
635: --param_index;
636:
1.232 misha 637: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.350 moko 638: String file_spec=r.full_disk_path(file_name);
1.246 misha 639:
640: if(do_append && file_exist(file_spec))
641: output_column_names=false;
1.188 paf 642:
1.319 moko 643: TableControlChars control_chars;
1.281 misha 644: if(param_index<params.count())
1.288 misha 645: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 646: int valid_options=control_chars.load(*options);
1.281 misha 647: if(valid_options!=options->count())
648: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 649: }
1.281 misha 650:
1.188 paf 651: if(param_index<params.count())
1.318 moko 652: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 653:
1.182 paf 654: Table& table=GET_SELF(r, VTable).table();
1.31 paf 655:
1.297 moko 656: #ifdef USE_STRINGSTREAM
1.269 misha 657: pa_stringstream ost(std::stringstream::out);
1.257 misha 658:
1.319 moko 659: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 660:
661: // write
1.269 misha 662: pa_string data=ost.str();
1.257 misha 663: const char* data_cstr=data.c_str();
1.267 misha 664: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 665: #else
1.257 misha 666: String sdata;
1.224 misha 667:
1.319 moko 668: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 669:
670: // write
1.257 misha 671: const char* data_cstr=sdata.cstr();
1.297 moko 672: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 673: if(*data_cstr) // not empty (when empty it's not heap memory)
674: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 675: #endif
676: }
677:
678: static void _csv_string(Request& r, MethodParams& params) {
679: bool output_column_names=true;
680: size_t param_index=0;
681: if(params.count()>0 && params[0].is_string()) {
682: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
683: output_column_names=false;
684: param_index++;
685: } else {
1.318 moko 686: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 687: }
1.224 misha 688: }
1.240 misha 689:
1.319 moko 690: TableControlChars control_chars;
1.297 moko 691: if(param_index<params.count())
692: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 693: int valid_options=control_chars.load(*options);
1.297 moko 694: if(valid_options!=options->count())
695: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
696: }
697:
698: Table& table=GET_SELF(r, VTable).table();
699:
700: #ifdef USE_STRINGSTREAM
701: pa_stringstream ost(std::stringstream::out);
702:
1.319 moko 703: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 704:
1.338 moko 705: r.write(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
1.297 moko 706: #else
707: String sdata;
708:
1.319 moko 709: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 710:
1.338 moko 711: r.write(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
1.297 moko 712: #endif
1.224 misha 713: }
714:
1.280 misha 715: static void _count(Request& r, MethodParams& params) {
716: Table& table=GET_SELF(r, VTable).table();
717: size_t result=0;
718: if(params.count()) {
719: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
720: if(param == "columns")
1.310 moko 721: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 722: else if(param == "cells")
723: result = table.count() ? table[table.current()]->count() : 0;
724: else if(param == "rows") // synonim for ^table.count[]
725: result = table.count();
726: else
727: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
728: } else
729: result = table.count();
730:
1.338 moko 731: r.write(*new VInt(result));
1.6 paf 732: }
733:
1.182 paf 734: static void _line(Request& r, MethodParams&) {
735: int result=1+GET_SELF(r, VTable).table().current();
1.338 moko 736: r.write(*new VInt(result));
1.6 paf 737: }
738:
1.182 paf 739: static void _offset(Request& r, MethodParams& params) {
740: Table& table=GET_SELF(r, VTable).table();
741: if(params.count()) {
1.133 paf 742: bool absolute=false;
1.182 paf 743: if(params.count()>1) {
744: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 745: if(whence=="cur")
1.134 paf 746: absolute=false;
1.133 paf 747: else if(whence=="set")
1.134 paf 748: absolute=true;
1.133 paf 749: else
1.318 moko 750: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 751: }
1.133 paf 752:
1.211 paf 753: int offset=params.as_int(params.count()-1, "offset must be expression", r);
754: table.offset(absolute, offset);
1.151 paf 755: } else
1.338 moko 756: r.write(*new VInt(table.current()));
1.6 paf 757: }
758:
1.182 paf 759: static void _menu(Request& r, MethodParams& params) {
1.263 misha 760: InCycle temp(r);
1.221 paf 761:
1.182 paf 762: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 763:
1.182 paf 764: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 765:
1.182 paf 766: Table& table=GET_SELF(r, VTable).table();
1.293 misha 767: size_t saved_current=table.current();
1.7 paf 768:
1.251 misha 769: if(delim_maybe_code) { // delimiter set
1.250 misha 770: bool need_delim=false;
1.316 moko 771: for(size_t row=0; row<table.count(); row++) {
1.250 misha 772: table.set_current(row);
773:
1.334 moko 774: Value& sv_processed=r.process(body_code);
1.341 moko 775: TempSkip4Delimiter skip(r);
1.250 misha 776:
777: const String* s_processed=sv_processed.get_string();
1.251 misha 778: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 779: if(need_delim) // need delim & iteration produced string?
1.338 moko 780: r.write(r.process(*delim_maybe_code));
1.250 misha 781: else
782: need_delim=true;
783: }
784:
1.338 moko 785: r.write(sv_processed);
1.242 misha 786:
1.341 moko 787: if(skip.check_break())
1.250 misha 788: break;
789: }
790: } else {
1.316 moko 791: for(size_t row=0; row<table.count(); row++) {
1.250 misha 792: table.set_current(row);
793:
794: r.process_write(body_code);
795:
1.341 moko 796: if(r.check_skip_break())
1.250 misha 797: break;
1.7 paf 798: }
799: }
1.99 parser 800: table.set_current(saved_current);
1.7 paf 801: }
802:
1.110 parser 803: #ifndef DOXYGEN
1.74 paf 804: struct Row_info {
1.166 paf 805: Request *r;
1.74 paf 806: Table *table;
1.182 paf 807: Value* key_code;
808: size_t key_field;
809: Array<int>* value_fields;
1.315 moko 810: Value* value_code;
1.182 paf 811: HashStringValue* hash;
1.174 paf 812: Table2hash_distint distinct;
1.182 paf 813: size_t row;
1.227 misha 814: Table2hash_value_type value_type;
1.74 paf 815: };
1.110 parser 816: #endif
1.182 paf 817: static void table_row_to_hash(Table::element_type row, Row_info *info) {
818: const String* key;
819: if(info->key_code) {
820: info->table->set_current(info->row++); // change context row
1.334 moko 821: Value& sv_processed=info->r->process(*info->key_code);
1.166 paf 822: key=&sv_processed.as_string();
1.227 misha 823: } else {
1.182 paf 824: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 825: }
1.166 paf 826:
827: if(!key)
828: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 829:
1.243 misha 830: bool exist=false;
831: switch(info->value_type) {
832: case C_STRING: {
1.317 moko 833: if(info->value_fields->count()){
834: size_t index=info->value_fields->get(0);
835: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
836: } else {
837: exist=info->hash->put_dont_replace(*key, VString::empty());
838: }
1.243 misha 839: break;
1.227 misha 840: }
1.243 misha 841: case C_HASH: {
1.182 paf 842: VHash* vhash=new VHash;
843: HashStringValue& hash=vhash->hash();
844: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
845: size_t value_field=i.next();
846: if(value_field<row->count())
1.314 moko 847: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 848: }
849:
1.227 misha 850: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 851: break;
1.174 paf 852: }
1.243 misha 853: case C_TABLE: {
854: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 855: Table* table;
1.227 misha 856: if(vtable) {
1.243 misha 857: if(info->distinct==D_ILLEGAL) {
858: exist=true;
859: break;
860: }
1.174 paf 861: table=vtable->get_table();
1.227 misha 862: } else {
1.174 paf 863: // no? creating table of same structure as source
1.179 paf 864: Table::Action_options table_options(0, 0);
1.182 paf 865: table=new Table(*info->table, table_options/*no rows, just structure*/);
866: info->hash->put(*key, new VTable(table));
1.174 paf 867: }
1.308 moko 868: Table::element_type row_copy(new ArrayString(row->count()));
869: row_copy->append(*row);
870: *table+=row_copy;
1.243 misha 871: break;
1.174 paf 872: }
1.315 moko 873: case C_CODE: {
874: if(!info->key_code)
875: info->table->set_current(info->row++); // change context row
1.334 moko 876: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code));
1.315 moko 877: break;
878: }
1.74 paf 879: }
1.227 misha 880: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 881: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 882: }
1.235 misha 883:
884: Table2hash_value_type get_value_type(Value& vvalue_type){
885: if(vvalue_type.is_string()) {
886: const String& svalue_type=*vvalue_type.get_string();
887: if(svalue_type == "table"){
888: return C_TABLE;
889: } else if (svalue_type == "string") {
890: return C_STRING;
891: } else if (svalue_type == "hash") {
892: return C_HASH;
893: } else {
1.314 moko 894: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 895: }
896: } else {
1.314 moko 897: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 898: }
899: }
900:
1.315 moko 901: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
902: if(vdistinct.is_string()) {
903: const String& sdistinct=*vdistinct.get_string();
904: if(sdistinct!="tables")
905: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
906: value_type=C_TABLE;
907: return D_FIRST;
908: }
909: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
910: }
911:
1.182 paf 912: static void _hash(Request& r, MethodParams& params) {
913: Table& self_table=GET_SELF(r, VTable).table();
914: VHash& result=*new VHash;
1.238 misha 915: if(Table::columns_type columns=self_table.columns()){
1.182 paf 916: if(columns->count()>0) {
1.174 paf 917: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 918: Table2hash_value_type value_type=C_HASH;
1.182 paf 919: int param_index=params.count()-1;
1.166 paf 920: if(param_index>0) {
1.315 moko 921:
922: if(params[1].get_junction())
923: value_type=C_CODE;
924:
925: 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 926: --param_index;
927: int valid_options=0;
1.238 misha 928: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 929: valid_options++;
1.335 moko 930: distinct=get_distinct(r.process(*vdistinct_code), value_type);
1.166 paf 931: }
1.238 misha 932: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
933: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 934: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 935: if(value_type==C_CODE)
936: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 937: valid_options++;
1.335 moko 938: value_type=get_value_type(r.process(*vvalue_type_code));
1.238 misha 939: }
1.226 misha 940:
1.182 paf 941: if(valid_options!=options->count())
1.272 misha 942: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 943: }
944: }
1.238 misha 945:
1.315 moko 946: if(param_index==2) // options were specified but not as hash
1.289 misha 947: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
948:
1.182 paf 949: Array<int> value_fields;
1.315 moko 950: Value* value_code=0;
951:
1.238 misha 952: if(param_index==0){ // list of columns wasn't specified
953: if(value_type==C_STRING) // $.type[string]
1.314 moko 954: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 955:
956: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
957: value_fields+=i;
958:
1.315 moko 959: } else { // list of columns or code was specified
1.227 misha 960: if(value_type==C_TABLE)
1.314 moko 961: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 962:
1.315 moko 963: Value& value_fields_param=params[1];
1.317 moko 964: if(value_fields_param.get_junction()){ // code specified
1.315 moko 965: value_code=&value_fields_param;
966: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 967: const String &field_name=*value_fields_param.get_string();
968: if(!field_name.is_empty())
969: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 970: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
971: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
972: const String& value_field_name =*i.next()->get(0);
973: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 974: }
975: } else
1.315 moko 976: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 977: }
1.74 paf 978:
1.340 moko 979: if(value_type==C_STRING && value_fields.count()>1)
980: throw Exception(PARSER_RUNTIME, 0, "you can't specify more then one value field with option $.type[string]");
1.182 paf 981:
982: {
983: Value* key_param=¶ms[0];
1.193 paf 984: Row_info info={
985: &r,
986: &self_table,
1.315 moko 987: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 988: /*key_field=*/0/*filled below*/,
1.193 paf 989: &value_fields,
1.315 moko 990: value_code,
1.193 paf 991: &result.hash(),
992: distinct,
1.227 misha 993: /*row=*/0,
994: value_type
1.193 paf 995: };
1.314 moko 996: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 997:
998: int saved_current=self_table.current();
999: self_table.for_each(table_row_to_hash, &info);
1000: self_table.set_current(saved_current);
1.207 paf 1001:
1002: result.extract_default();
1.182 paf 1003: }
1.74 paf 1004: }
1.238 misha 1005: }
1.338 moko 1006: r.write(result);
1.74 paf 1007: }
1008:
1.110 parser 1009: #ifndef DOXYGEN
1.344 moko 1010: struct Table_seq_item : public PA_Allocated {
1.182 paf 1011: ArrayString* row;
1.34 paf 1012: union {
1.182 paf 1013: const char *c_str;
1.34 paf 1014: double d;
1015: } value;
1.32 paf 1016: };
1.110 parser 1017: #endif
1.34 paf 1018: static int sort_cmp_string(const void *a, const void *b) {
1019: return strcmp(
1.78 paf 1020: static_cast<const Table_seq_item *>(a)->value.c_str,
1021: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1022: );
1023: }
1024: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1025: double va=static_cast<const Table_seq_item *>(a)->value.d;
1026: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1027: if(va<vb)
1028: return -1;
1029: else if(va>vb)
1030: return +1;
1031: else
1032: return 0;
1033: }
1.182 paf 1034: static void _sort(Request& r, MethodParams& params) {
1035: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1036:
1.339 moko 1037: 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 1038:
1.182 paf 1039: Table& old_table=GET_SELF(r, VTable).table();
1040: Table& new_table=*new Table(old_table.columns());
1.34 paf 1041:
1.344 moko 1042: Table_seq_item* seq=new Table_seq_item[old_table.count()];
1.34 paf 1043: int i;
1044:
1045: // calculate key values
1046: bool key_values_are_strings=true;
1.182 paf 1047: int old_count=old_table.count();
1048: for(i=0; i<old_count; i++) {
1.101 parser 1049: old_table.set_current(i);
1.32 paf 1050: // calculate key value
1.182 paf 1051: seq[i].row=old_table[i];
1.335 moko 1052: Value& value=r.process(key_maker);
1.34 paf 1053: if(i==0) // determining key values type by first one
1054: key_values_are_strings=value.is_string();
1055:
1056: if(key_values_are_strings)
1057: seq[i].value.c_str=value.as_string().cstr();
1058: else
1.287 moko 1059: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1060: }
1.265 misha 1061:
1062: // @todo: handle this elsewhere
1063: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1064: for(i=0; i<old_count; i++)
1065: if(*seq[i].value.c_str)
1.332 moko 1066: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), pa_UTF8_charset).cstr();
1.265 misha 1067: }
1068:
1.266 misha 1069: // sort keys
1.295 moko 1070: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1071:
1.34 paf 1072: // reorder table as they require in 'seq'
1.182 paf 1073: for(i=0; i<old_count; i++)
1074: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1075:
1076: delete[] seq;
1.32 paf 1077:
1.116 parser 1078: // replace any previous table value
1.182 paf 1079: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1080: }
1081:
1.176 paf 1082: #ifndef DOXYGEN
1.182 paf 1083: struct Expression_is_true_info {
1.176 paf 1084: Request* r;
1085: Value* expression_code;
1086: };
1087: #endif
1.275 misha 1088:
1.191 paf 1089: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1.335 moko 1090: return info->r->process(*info->expression_code).as_bool();
1.176 paf 1091: }
1.275 misha 1092:
1093: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1094: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1095: Table::Action_options o=get_action_options(r, params, 1, table);
1096: if(params.count()>2)
1097: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1098: Expression_is_true_info info={&r, &expression_code};
1099: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1100: }
1.275 misha 1101:
1102: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1103: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1104: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1105: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1106: return table.locate(name, value, o);
1107: }
1.275 misha 1108:
1.182 paf 1109: static void _locate(Request& r, MethodParams& params) {
1110: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1111:
1.291 moko 1112: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1113: _locate_expression(table, r, params) :
1114: _locate_name_value(table, r, params);
1.338 moko 1115: r.write(VBool::get(result));
1.145 paf 1116: }
1.182 paf 1117:
1118:
1.191 paf 1119: static void _flip(Request& r, MethodParams&) {
1.182 paf 1120: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1121: Table& new_table=*new Table(0);
1.182 paf 1122: if(size_t old_count=old_table.count())
1.310 moko 1123: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1124: for(size_t column=0; column<old_cols; column++) {
1125: Table::element_type new_row(new ArrayString(old_count));
1126: for(size_t i=0; i<old_count; i++) {
1127: Table::element_type old_row=old_table[i];
1128: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1129: }
1.182 paf 1130: new_table+=new_row;
1.39 paf 1131: }
1132:
1.338 moko 1133: r.write(*new VTable(&new_table));
1.39 paf 1134: }
1135:
1.293 misha 1136: static void _foreach(Request& r, MethodParams& params) {
1137: InCycle temp(r);
1138:
1.331 moko 1139: const String* rownum_var_name=¶ms.as_string(0, "rownum-var name must be string");
1140: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
1.293 misha 1141:
1142: Value& body_code=params.as_junction(2, "body must be code");
1143:
1144: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1145:
1146: Table& table=GET_SELF(r, VTable).table();
1147: size_t saved_current=table.current();
1148:
1.331 moko 1149: rownum_var_name=rownum_var_name->is_empty()? 0 : rownum_var_name;
1150: value_var_name=value_var_name->is_empty()? 0 : value_var_name;
1.293 misha 1151:
1152: Value* var_context=r.get_method_frame()->caller();
1153:
1154: if(delim_maybe_code) { // delimiter set
1155: bool need_delim=false;
1.316 moko 1156: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1157: table.set_current(row);
1158:
1159: if(rownum_var_name)
1.299 moko 1160: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1161: if(value_var_name)
1.299 moko 1162: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1163:
1.334 moko 1164: Value& sv_processed=r.process(body_code);
1.341 moko 1165: TempSkip4Delimiter skip(r);
1.293 misha 1166:
1167: const String* s_processed=sv_processed.get_string();
1168: if(s_processed && !s_processed->is_empty()) { // we have body
1169: if(need_delim) // need delim & iteration produced string?
1.338 moko 1170: r.write(r.process(*delim_maybe_code));
1.293 misha 1171: else
1172: need_delim=true;
1173: }
1174:
1.338 moko 1175: r.write(sv_processed);
1.293 misha 1176:
1.341 moko 1177: if(skip.check_break())
1.293 misha 1178: break;
1179: }
1180: } else {
1.316 moko 1181: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1182: table.set_current(row);
1183:
1184: if(rownum_var_name)
1.300 moko 1185: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1186: if(value_var_name)
1.300 moko 1187: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1188:
1189: r.process_write(body_code);
1190:
1.341 moko 1191: if(r.check_skip_break())
1.293 misha 1192: break;
1193: }
1194: }
1195: table.set_current(saved_current);
1196: }
1197:
1.309 moko 1198: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1199: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1200: }
1201:
1202: inline Table::element_type row_from_string(Request& r, Value ¶m){
1203: if(!param.is_string() && !param.get_junction())
1204: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1205:
1206: const String& string=r.process_to_string(param);
1.41 paf 1207:
1208: // parse cells
1.182 paf 1209: Table::element_type row=new ArrayString;
1.326 moko 1210: string.split(*row, 0, "\t", String::L_AS_IS);
1.41 paf 1211:
1.309 moko 1212: return row;
1.41 paf 1213: }
1214:
1.309 moko 1215: static void _append(Request& r, MethodParams& params) {
1216: VTable vtable=GET_SELF(r, VTable);
1217: Table& table=vtable.table();
1.306 moko 1218:
1.309 moko 1219: HashStringValue* hash=params[0].get_hash();
1220: if(hash){
1221: table+=new ArrayString();
1222: size_t saved_current=table.current();
1223: table.set_current(table.count()-1);
1224: hash->for_each<VTable*>(update_cell, &vtable);
1225: table.set_current(saved_current);
1226: } else {
1227: table+=row_from_string(r, params[0]);
1228: }
1229: }
1.306 moko 1230:
1.309 moko 1231: static void _insert(Request& r, MethodParams& params) {
1232: VTable vtable=GET_SELF(r, VTable);
1233: Table& table=vtable.table();
1234: HashStringValue* hash=params[0].get_hash();
1235: if(hash){
1236: table.insert(table.current(), new ArrayString());
1237: hash->for_each<VTable*>(update_cell, &vtable);
1238: } else {
1239: table.insert(table.current(), row_from_string(r, params[0]));
1240: }
1.306 moko 1241: }
1242:
1.311 moko 1243: static void _delete(Request& r, MethodParams&) {
1.307 moko 1244: Table& table=GET_SELF(r, VTable).table();
1245: table.remove_current();
1246: }
1247:
1.182 paf 1248: static void join_named_row(Table& src, Table* dest) {
1249: Table::columns_type dest_columns=dest->columns();
1250: size_t dest_columns_count=dest_columns->count();
1251: Table::element_type dest_row(new ArrayString(dest_columns_count));
1252: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1253: const String* src_item=src.item(*dest_columns->get(dest_column));
1254: *dest_row+=src_item?src_item:new String;
1255: }
1256: *dest+=dest_row;
1257: }
1258: static void join_nameless_row(Table& src, Table* dest) {
1259: *dest+=src[src.current()];
1260: }
1261: static void _join(Request& r, MethodParams& params) {
1.355 ! moko 1262: if(Table* src=params.as_table(0, "source")){
! 1263: Table::Action_options o=get_action_options(r, params, 1, *src);
1.176 paf 1264:
1.355 ! moko 1265: Table& dest=GET_SELF(r, VTable).table();
! 1266: if(src == &dest)
! 1267: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
! 1268:
! 1269: if(dest.columns()) // dest is named
! 1270: src->table_for_each(join_named_row, &dest, o);
! 1271: else // dest is nameless
! 1272: src->table_for_each(join_nameless_row, &dest, o);
! 1273: }
1.42 paf 1274: }
1275:
1.94 parser 1276: #ifndef DOXYGEN
1.169 paf 1277: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1278: ArrayString& columns;
1.218 paf 1279: int columns_count;
1.182 paf 1280: ArrayString* row;
1.94 parser 1281: public:
1.182 paf 1282: Table* table;
1283: public:
1284: Table_sql_event_handlers() :
1285: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1286: }
1287:
1.279 misha 1288: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1289: try {
1.274 moko 1290: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1291: return false;
1292: } catch(...) {
1.343 moko 1293: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_column");
1.170 paf 1294: return true;
1295: }
1296: }
1.348 moko 1297: bool before_rows(SQL_Error& error) {
1298: if(table) {
1299: error=SQL_Error("result must contain exactly one table");
1300: return true;
1301: }
1.170 paf 1302: try {
1.182 paf 1303: table=new Table(&columns);
1.218 paf 1304: columns_count=columns.count();
1.170 paf 1305: return false;
1306: } catch(...) {
1.343 moko 1307: error=SQL_Error("exception occurred in Table_sql_event_handlers::before_rows");
1.170 paf 1308: return true;
1309: }
1310: }
1311: bool add_row(SQL_Error& error) {
1312: try {
1.218 paf 1313: *table+=row=new ArrayString(columns_count);
1.170 paf 1314: return false;
1315: } catch(...) {
1.343 moko 1316: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row");
1.170 paf 1317: return true;
1318: }
1319: }
1.279 misha 1320: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1321: try {
1.292 misha 1322: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1323: return false;
1324: } catch(...) {
1.343 moko 1325: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row_cell");
1.170 paf 1326: return true;
1327: }
1.94 parser 1328: }
1329: };
1330: #endif
1.204 paf 1331:
1.347 moko 1332: static void marshal_bind( HashStringValue::key_type aname, HashStringValue::value_type avalue, SQL_Driver::Placeholder** pptr) {
1.204 paf 1333: SQL_Driver::Placeholder& ph=**pptr;
1334: ph.name=aname.cstr();
1.261 misha 1335: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1336: ph.is_null=avalue->get_class()==void_class;
1337: ph.were_updated=false;
1338:
1339: (*pptr)++;
1340: }
1341:
1342: // not static, used elsewhere
1343: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1344: int hash_count=hash.count();
1.344 moko 1345: placeholders=new(PointerGC) SQL_Driver::Placeholder[hash_count];
1.204 paf 1346: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1347: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1348: return hash_count;
1349: }
1350:
1351: // not static, used elsewhere
1352: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1353: SQL_Driver::Placeholder* ph=placeholders;
1354: for(int i=0; i<placeholder_count; i++, ph++)
1355: if(ph->were_updated) {
1356: Value* value;
1357: if(ph->is_null)
1.248 misha 1358: value=VVoid::get();
1.204 paf 1359: else
1.256 misha 1360: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1361: hash.put(ph->name, value);
1362: }
1363: }
1364:
1.182 paf 1365: static void _sql(Request& r, MethodParams& params) {
1366: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1367:
1.204 paf 1368: HashStringValue* bind=0;
1.244 misha 1369: ulong limit=SQL_NO_LIMIT;
1.100 parser 1370: ulong offset=0;
1.281 misha 1371: if(params.count()>1)
1.288 misha 1372: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1373: int valid_options=0;
1374: if(Value* vbind=options->get(sql_bind_name)) {
1375: valid_options++;
1376: bind=vbind->get_hash();
1377: }
1378: if(Value* vlimit=options->get(sql_limit_name)) {
1379: valid_options++;
1.335 moko 1380: limit=(ulong)r.process(*vlimit).as_double();
1.281 misha 1381: }
1382: if(Value* voffset=options->get(sql_offset_name)) {
1383: valid_options++;
1.335 moko 1384: offset=(ulong)r.process(*voffset).as_double();
1.281 misha 1385: }
1386: if(valid_options!=options->count())
1387: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1388: }
1.49 paf 1389:
1.204 paf 1390: SQL_Driver::Placeholder* placeholders=0;
1391: uint placeholders_count=0;
1392: if(bind)
1393: placeholders_count=marshal_binds(*bind, placeholders);
1394:
1.182 paf 1395: const String& statement_string=r.process_to_string(statement);
1.337 moko 1396: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
1.260 misha 1397:
1.182 paf 1398: Table_sql_event_handlers handlers;
1.294 moko 1399:
1.182 paf 1400: r.connection()->query(
1.203 paf 1401: statement_cstr,
1.208 paf 1402: placeholders_count, placeholders,
1.203 paf 1403: offset, limit,
1.160 paf 1404: handlers,
1405: statement_string);
1.135 paf 1406:
1.204 paf 1407: if(bind)
1408: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1409:
1.182 paf 1410: Table& result=
1411: handlers.table?*handlers.table: // query resulted in table? return it
1412: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1413:
1414: // replace any previous table value
1.182 paf 1415: GET_SELF(r, VTable).set_table(result);
1.49 paf 1416: }
1417:
1.233 misha 1418: static void _columns(Request& r, MethodParams& params) {
1419: const String* column_column_name;
1420: if(params.count()>0)
1421: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1422: else
1423: column_column_name=new String("column");
1.88 parser 1424:
1.182 paf 1425: Table::columns_type result_columns(new ArrayString);
1.233 misha 1426: *result_columns+=column_column_name;
1.182 paf 1427: Table& result_table=*new Table(result_columns);
1.88 parser 1428:
1.182 paf 1429: Table& source_table=GET_SELF(r, VTable).table();
1430: if(Table::columns_type source_columns=source_table.columns()) {
1431: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1432: Table::element_type result_row(new ArrayString);
1433: *result_row+=i.next();
1434: result_table+=result_row;
1.88 parser 1435: }
1436: }
1437:
1.338 moko 1438: r.write(*new VTable(&result_table));
1.88 parser 1439: }
1440:
1.182 paf 1441: static void _select(Request& r, MethodParams& params) {
1.231 misha 1442: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1443:
1.182 paf 1444: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1445:
1.277 moko 1446: int limit=source_table.count();
1.282 misha 1447: int offset=0;
1448: bool reverse=false;
1.278 moko 1449:
1.281 misha 1450: if(params.count()>1)
1451: if(HashStringValue* options=params.as_hash(1)) {
1452: int valid_options=0;
1453: if(Value* vlimit=options->get(sql_limit_name)) {
1454: valid_options++;
1.335 moko 1455: limit=r.process(*vlimit).as_int();
1.281 misha 1456: }
1457: if(Value* voffset=options->get(sql_offset_name)) {
1458: valid_options++;
1.335 moko 1459: offset=r.process(*voffset).as_int();
1.281 misha 1460: }
1461: if(Value* vreverse=options->get(table_reverse_name)) {
1462: valid_options++;
1.335 moko 1463: reverse=r.process(*vreverse).as_bool();
1.281 misha 1464: }
1465: if(valid_options!=options->count())
1.288 misha 1466: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1467: }
1468:
1469: Table& result_table=*new Table(source_table.columns());
1.277 moko 1470:
1.283 misha 1471: size_t size=source_table.count();
1472: if(offset<0)
1473: offset+=size;
1.284 misha 1474: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1475: size_t saved_current=source_table.current();
1476: size_t appended=0;
1477:
1478: if(reverse){
1479: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1480: source_table.set_current(row);
1481:
1.336 moko 1482: bool condition=r.process(vcondition).as_bool();
1.282 misha 1483:
1484: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1485: result_table+=source_table[row];
1486: if(row==0) break;
1487: }
1488: } else {
1489: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1490: source_table.set_current(row);
1.148 paf 1491:
1.336 moko 1492: bool condition=r.process(vcondition).as_bool();
1.277 moko 1493:
1.282 misha 1494: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1495: result_table+=source_table[row];
1496: }
1.277 moko 1497: }
1.282 misha 1498: source_table.set_current(saved_current);
1.148 paf 1499: }
1500:
1.338 moko 1501: r.write(*new VTable(&result_table));
1.148 paf 1502: }
1503:
1.66 paf 1504: // constructor
1505:
1.182 paf 1506: MTable::MTable(): Methoded("table") {
1.142 paf 1507: // ^table::create{data}
1508: // ^table::create[nameless]{data}
1509: // ^table::create[table]
1.236 misha 1510: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1511: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1512: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1513:
1.142 paf 1514: // ^table::load[file]
1515: // ^table::load[nameless;file]
1.168 paf 1516: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1517:
1518: // ^table.save[file]
1519: // ^table.save[nameless;file]
1.188 paf 1520: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1521:
1.224 misha 1522: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1523:
1.297 moko 1524: // ^table.csv-string[]
1525: // ^table.csv-string[nameless]
1526: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1527: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1528:
1.6 paf 1529: // ^table.count[]
1.280 misha 1530: // ^table.count[rows]
1531: // ^table.count[columns]
1532: // ^table.count[cells]
1533: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1534:
1535: // ^table.line[]
1.66 paf 1536: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1537:
1.10 paf 1538: // ^table.offset[]
1.133 paf 1539: // ^table.offset(offset)
1540: // ^table.offset[cur|set](offset)
1541: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1542:
1.10 paf 1543: // ^table.menu{code}
1544: // ^table.menu{code}[delim]
1.66 paf 1545: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1546:
1.239 misha 1547: // ^table.hash[key field name]
1548: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1549: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1550:
1.102 parser 1551: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1552: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1553: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1554:
1.36 paf 1555: // ^table.locate[field;value]
1.176 paf 1556: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1557:
1558: // ^table.flip[]
1.66 paf 1559: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1560:
1.293 misha 1561: // ^table.foreach[row-num;value]{code}
1562: // ^table.foreach[row-num;value]{code}[delim]
1563: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1564:
1.306 moko 1565: // ^table.append{row{tab}data}
1.66 paf 1566: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1567:
1.306 moko 1568: // ^table.insert{row{tab}data} before current row
1569: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1570:
1.307 moko 1571: // ^table.delete[] current row
1572: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1573:
1.157 paf 1574: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1575: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1576:
1577:
1.239 misha 1578: // ^table::sql[query]
1579: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1580: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1581:
1.239 misha 1582: // ^table.columns[[column name]]
1.233 misha 1583: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1584:
1585: // ^table.select(expression) = table
1.277 moko 1586: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1587: }
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