Annotation of parser3/src/classes/table.C, revision 1.350
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.342 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.144 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.154 paf 6: */
1.221 paf 7:
1.105 parser 8: #include "classes.h"
1.182 paf 9: #include "pa_vmethod_frame.h"
10:
1.16 paf 11: #include "pa_common.h"
1.1 paf 12: #include "pa_request.h"
1.265 misha 13: #include "pa_charsets.h"
1.1 paf 14: #include "pa_vtable.h"
1.6 paf 15: #include "pa_vint.h"
1.51 paf 16: #include "pa_sql_connection.h"
1.72 paf 17: #include "pa_vbool.h"
1.277 moko 18: #include "pa_array.h"
1.1 paf 19:
1.345 moko 20: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4) && !defined(PA_DEBUG_DISABLE_GC))
1.305 moko 21: #include <sstream>
22: #define USE_STRINGSTREAM
23: #endif
24:
1.350 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.349 2019/11/23 23:48:41 moko Exp $";
1.286 moko 26:
1.66 paf 27: // class
28:
1.182 paf 29: class MTable: public Methoded {
1.66 paf 30: public: // VStateless_class
1.264 misha 31: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 32: public:
1.182 paf 33: MTable();
1.66 paf 34: };
1.1 paf 35:
1.182 paf 36: // global variable
37:
1.313 moko 38: DECLARE_CLASS_VAR(table, new MTable);
1.182 paf 39:
40: // globals
41:
1.347 moko 42: #define TABLE_REVERSE_NAME "reverse"
1.182 paf 43: String table_reverse_name(TABLE_REVERSE_NAME);
44:
1.1 paf 45: // methods
1.66 paf 46:
1.319 moko 47: static Table::Action_options get_action_options(Request& r, MethodParams& params, size_t options_index, const Table& source) {
1.176 paf 48: Table::Action_options result;
1.268 misha 49: if(params.count() <= options_index)
1.182 paf 50: return result;
51:
1.288 misha 52: HashStringValue* options=params.as_hash(options_index);
1.176 paf 53: if(!options)
54: return result;
55:
56: result.defined=true;
57: bool defined_offset=false;
58:
59: int valid_options=0;
1.182 paf 60: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 61: valid_options++;
62: defined_offset=true;
63: if(voffset->is_string()) {
1.182 paf 64: const String& soffset=*voffset->get_string();
1.176 paf 65: if(soffset == "cur")
66: result.offset=source.current();
67: else
1.318 moko 68: throw Exception(PARSER_RUNTIME, &soffset, "must be 'cur' string or expression");
1.176 paf 69: } else
1.335 moko 70: result.offset=r.process(*voffset).as_int();
1.176 paf 71: }
1.182 paf 72: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 73: valid_options++;
1.335 moko 74: result.limit=r.process(*vlimit).as_int();
1.176 paf 75: }
1.182 paf 76: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
77: valid_options++;
1.335 moko 78: result.reverse=r.process(*vreverse).as_bool();
1.182 paf 79: if(result.reverse && !defined_offset)
80: result.offset=source.count()-1;
81: }
82:
83: if(valid_options!=options->count())
1.272 misha 84: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 85:
86: return result;
87: }
1.157 paf 88:
1.319 moko 89: struct TableControlChars {
90: char separator; const String* sseparator;
1.236 misha 91: char encloser; const String* sencloser;
92:
1.320 moko 93: char separators[3];
94:
1.319 moko 95: TableControlChars():
96: separator('\t'), sseparator(new String("\t")),
1.236 misha 97: encloser(0), sencloser(0)
1.320 moko 98: {
99: strcpy(separators,"\t\n");
100: }
101:
1.236 misha 102: int load( HashStringValue& options ) {
103: int result=0;
104: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.319 moko 105: sseparator=&vseparator->as_string();
106: if(sseparator->length()!=1)
1.323 moko 107: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one byte character");
1.319 moko 108: separator=sseparator->first_char();
1.320 moko 109: separators[0]=separator;
1.236 misha 110: result++;
111: }
112: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
113: sencloser=&vencloser->as_string();
1.297 moko 114: if(sencloser->is_empty()){
115: encloser=0;
116: } else {
1.325 moko 117: if(sencloser->length()!=1)
118: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be empty or one byte character");
119: encloser=sencloser->first_char();
1.297 moko 120: }
1.236 misha 121: result++;
122: }
123: return result;
124: }
125: };
126:
1.319 moko 127:
1.322 moko 128: struct lsplit_sresult {
129: String* piece;
130: char delim;
131:
132: lsplit_sresult() : piece(0), delim(0){}
133:
134: operator bool() { return piece!=0; }
135:
136: void append(String *str){
137: if(piece)
138: *piece << *str;
139: else
140: piece = str;
141: }
142: };
143:
144: class StringSplitHelper : public String {
145: public:
146: char* base;
147:
148: StringSplitHelper(String astring) : String(astring), base(cstrm()) {}
149:
150: bool check_lang(const char *pos){
151: return langs.check_lang(L_AS_IS, pos-base, 1);
152: }
153:
154: String *extract(char *pos){
155: String *result=new String;
1.330 moko 156: if(size_t len=strlen(pos)){
157: // first: their langs
158: result->langs.append(result->body, langs, pos-base, len);
159: // next: letters themselves
160: result->body=Body(pos);
161: }
1.322 moko 162: return result;
163: }
164: };
165:
166: inline lsplit_sresult lsplit(char* *string_ref, const char* delims, StringSplitHelper& helper) {
167: lsplit_sresult result;
168: if(char *pos=*string_ref) {
1.327 moko 169: while(pos=strpbrk(pos, delims)) {
170: if(helper.check_lang(pos)){
171: result.delim=*pos;
172: *pos=0;
1.322 moko 173: result.piece=helper.extract(*string_ref);
1.327 moko 174: *string_ref=pos+1;
1.322 moko 175: return result;
176: }
1.327 moko 177: pos++;
1.322 moko 178: }
179: result.piece=helper.extract(*string_ref);
180: *string_ref=0;
181: }
182: return result;
183: }
184:
185: static lsplit_sresult lsplit(char** string_ref, const char* delims, char encloser, StringSplitHelper& helper) {
186: lsplit_sresult result;
187:
188: if(char *pos=*string_ref) {
189: if(encloser && *pos==encloser && helper.check_lang(pos)) {
190: *string_ref=++pos;
191:
192: // we are enclosed, searching for second encloser
193: while(1) {
1.328 moko 194: if(pos=strchr(pos, encloser)){
195: if(helper.check_lang(pos)){
196: *(pos++)=0;
1.322 moko 197: result.append(helper.extract(*string_ref));
1.328 moko 198: if(*pos==encloser && helper.check_lang(pos)){ // double-encloser stands for encloser
1.333 moko 199: *string_ref=pos;
1.322 moko 200: } else {
1.328 moko 201: *string_ref=pos;
1.322 moko 202: break;
203: }
204: }
1.333 moko 205: pos++;
1.327 moko 206: } else {
1.322 moko 207: result.append(helper.extract(*string_ref));
208: *string_ref=0;
209: return result;
210: }
211: }
212:
213: // we are no longer enclosed, searching for delimiter
1.328 moko 214: while(pos=strpbrk(pos, delims)) {
215: if(helper.check_lang(pos)){
216: result.delim=*pos;
217: if(pos>*string_ref){
218: *pos=0;
1.322 moko 219: result.append(helper.extract(*string_ref));
220: }
1.328 moko 221: *string_ref=pos+1;
1.322 moko 222: return result;
223: }
1.328 moko 224: pos++;
1.322 moko 225: }
226: result.append(helper.extract(*string_ref));
227: *string_ref=0;
228: } else
229: return lsplit(string_ref, delims, helper);
230: }
231: return result;
232: }
233:
234: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
235: if(*data_ref) {
236: while(**data_ref == '\n' && helper.check_lang(*data_ref))
237: (*data_ref)++;
238: }
239: }
240:
1.182 paf 241: static void _create(Request& r, MethodParams& params) {
1.157 paf 242: // clone/copy part?
1.182 paf 243: if(Table *source=params[0].get_table()) {
1.268 misha 244: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 245: if(params.count()>2)
246: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 247: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 248: return;
249: }
1.142 paf 250:
1.236 misha 251: size_t data_param_index=0;
252: bool nameless=false;
253:
254: if(params.count()>1) {
255: if(params[0].is_string()){ // can be nameless only
256: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
257: if(snameless!="nameless")
1.318 moko 258: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 259: nameless=true;
260: data_param_index++;
261: }
262: }
263:
264: HashStringValue *options=0;
1.319 moko 265: TableControlChars control_chars;
1.236 misha 266:
267: size_t options_param_index=data_param_index+1;
1.322 moko 268: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.324 moko 269: if(control_chars.load(*options)!=options->count())
270: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.236 misha 271: }
272:
273: // data
1.322 moko 274: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
275: char *data=sdata.base;
1.44 paf 276:
277: // parse columns
1.182 paf 278: Table::columns_type columns;
1.322 moko 279: if(nameless) {
280: columns=0; // nameless
1.21 paf 281: } else {
1.322 moko 282: columns=new ArrayString;
283: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
284: *columns+=sr.piece;
285: if(sr.delim=='\n')
286: break;
1.182 paf 287: }
1.44 paf 288: }
1.322 moko 289:
290: Table& table=*new Table(columns);
291: int columns_count=columns ? columns->count(): 0;
1.44 paf 292:
293: // parse cells
1.322 moko 294: Table::element_type row(new ArrayString(columns_count));
295: skip_clean_empty_lines(&data, sdata);
296: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
297: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
298: break;
299: *row+=sr.piece;
300: if(sr.delim=='\n') {
301: table+=row;
302: row=new ArrayString(columns_count);
303: skip_clean_empty_lines(&data, sdata);
304: }
305: }
306: // last line [if without \n]
307: if(row->count())
1.182 paf 308: table+=row;
1.322 moko 309:
1.44 paf 310: // replace any previous table value
1.182 paf 311: GET_SELF(r, VTable).set_table(table);
1.44 paf 312: }
313:
1.187 paf 314: struct lsplit_result {
315: char* piece;
316: char delim;
317:
1.321 moko 318: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 319: operator bool() { return piece!=0; }
320: };
321:
1.321 moko 322: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
323: lsplit_result result(*string_ref);
324: if(result.piece) {
325: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 326: result.delim=*v;
327: *v=0;
1.321 moko 328: *string_ref=v+1;
1.187 paf 329: return result;
330: }
1.322 moko 331: *string_ref=0;
1.273 misha 332: }
333: return result;
1.187 paf 334: }
335:
1.320 moko 336: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 337: lsplit_result result(*string_ref);
1.187 paf 338:
1.321 moko 339: if(result.piece) {
340: if(encloser && *result.piece==encloser) {
341: result.piece++;
1.187 paf 342:
1.321 moko 343: char c;
1.187 paf 344: char *read;
345: char *write;
1.321 moko 346: write=read=result.piece;
347:
1.290 moko 348: // we are enclosed, searching for second encloser
349: while(c=*read++) {
1.187 paf 350: if(c==encloser) {
1.290 moko 351: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 352: read++;
1.290 moko 353: else
354: break; // note: skipping encloser
1.187 paf 355: }
356: *write++=c;
357: }
1.321 moko 358:
1.329 moko 359: // we are no longer enclosed, searching for delimiter
1.290 moko 360: while(c=*read++) {
1.320 moko 361: if(c==delims[0] || c==delims[1]) {
1.290 moko 362: result.delim=c;
363: break;
1.329 moko 364: } else
1.290 moko 365: *write++=c;
366: }
1.321 moko 367:
1.187 paf 368: *write=0; // terminate
1.321 moko 369: *string_ref=c ? read : 0;
1.187 paf 370: return result;
371: } else
1.320 moko 372: return lsplit(string_ref, delims);
1.273 misha 373: }
374: return result;
1.187 paf 375: }
376:
377: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 moko 378: while(*data_ref) {
379: if(**data_ref == '\n'){
380: (*data_ref)++;
381: } else {
382: if(**data_ref == '#' )
383: /*nowhere=*/getrow(data_ref);
384: else
385: break;
1.187 paf 386: }
387: }
388: }
389:
1.273 misha 390: static void skip_empty_lines( char** data_ref ) {
1.322 moko 391: if(*data_ref) {
392: while(**data_ref == '\n')
393: (*data_ref)++;
1.273 misha 394: }
395: }
396:
397: typedef void (*Skip_lines_action)(char** data_ref);
398:
1.182 paf 399: static void _load(Request& r, MethodParams& params) {
1.232 misha 400: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 401: int filename_param_index=0;
402: bool nameless=first_param=="nameless";
403: if(nameless)
404: filename_param_index++;
1.182 paf 405: size_t options_param_index=filename_param_index+1;
1.186 paf 406:
407: HashStringValue *options=0;
1.319 moko 408: TableControlChars control_chars;
1.349 moko 409: if(options_param_index<params.count() && (options=params.as_hash(options_param_index)))
1.319 moko 410: control_chars.load(*options);
1.186 paf 411:
1.44 paf 412: // loading text
1.350 ! moko 413: 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 414:
1.319 moko 415: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 416:
1.1 paf 417: // parse columns
1.182 paf 418: Table::columns_type columns;
1.168 paf 419: if(nameless) {
1.322 moko 420: columns=0; // nameless
1.1 paf 421: } else {
1.322 moko 422: columns=new ArrayString;
1.1 paf 423:
1.273 misha 424: skip_lines_action(&data);
1.320 moko 425: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 426: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 427: if(sr.delim=='\n')
428: break;
1.139 paf 429: }
1.1 paf 430: }
1.187 paf 431:
432: Table& table=*new Table(columns);
1.322 moko 433: int columns_count=columns ? columns->count(): 0;
1.1 paf 434:
435: // parse cells
1.218 paf 436: Table::element_type row(new ArrayString(columns_count));
1.273 misha 437: skip_lines_action(&data);
1.320 moko 438: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 439: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
440: break;
1.256 misha 441: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 442: if(sr.delim=='\n') {
443: table+=row;
1.218 paf 444: row=new ArrayString(columns_count);
1.273 misha 445: skip_lines_action(&data);
1.1 paf 446: }
1.187 paf 447: }
448: // last line [if without \n]
449: if(row->count())
1.1 paf 450: table+=row;
1.187 paf 451:
1.1 paf 452: // replace any previous table value
1.182 paf 453: GET_SELF(r, VTable).set_table(table);
1.1 paf 454: }
1.2 paf 455:
1.297 moko 456: #ifdef USE_STRINGSTREAM
1.346 moko 457: #include "../lib/gc/include/gc_allocator.h"
1.269 misha 458:
459: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
460: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
461:
1.298 moko 462: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 463: if(from){
1.257 misha 464: to<<encloser;
1.188 paf 465: // while we have 'encloser'...
1.189 paf 466: size_t pos_after=0;
1.297 moko 467: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 468: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 469: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 470: to<<encloser; // doubling encloser
1.188 paf 471: }
472: // last piece
1.297 moko 473: size_t from_length=from->length();
1.188 paf 474: if(pos_after<from_length)
1.297 moko 475: to<<from->mid(pos_after, from_length).cstr();
476: to<<encloser;
477: } else {
478: to<<encloser<<encloser;
479: }
480: }
481:
1.319 moko 482: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 483: if(output_column_names) {
484: if(table.columns()) { // named table
1.319 moko 485: if(control_chars.encloser){
1.297 moko 486: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 487: enclose( result, i.next(), control_chars.encloser );
1.297 moko 488: if(i.has_next())
1.319 moko 489: result<<control_chars.separator;
1.297 moko 490: }
491: } else {
492: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
493: result<<i.next()->cstr();
494: if(i.has_next())
1.319 moko 495: result<<control_chars.separator;
1.297 moko 496: }
497: }
498: } else { // nameless table [we were asked to output column names]
499: if(int lsize=table.count()?table[0]->count():0)
500: for(int column=0; column<lsize; column++) {
1.319 moko 501: if(control_chars.encloser) {
502: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 503: } else {
504: result<<column;
505: }
506: if(column<lsize-1){
1.319 moko 507: result<<control_chars.separator;
1.297 moko 508: }
509: }
510: else
511: result<<"empty nameless table";
512: }
513: result<<'\n';
514: }
1.188 paf 515:
1.297 moko 516: // process data lines
517: Array_iterator<ArrayString*> i(table);
1.319 moko 518: if(control_chars.encloser){
1.297 moko 519: while(i.has_next()) {
520: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 521: enclose( result, c.next(), control_chars.encloser );
1.297 moko 522: if(c.has_next())
1.319 moko 523: result<<control_chars.separator;
1.297 moko 524: }
525: result<<'\n';
526: }
527: } else {
528: while(i.has_next()) {
529: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
530: result<<c.next()->cstr();
531: if(c.has_next())
1.319 moko 532: result<<control_chars.separator;
1.297 moko 533: }
534: result<<'\n';
535: }
536: }
1.188 paf 537: }
538:
1.241 misha 539: #else
540:
1.298 moko 541: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 542: if(from){
1.257 misha 543: to<<*sencloser;
1.224 misha 544: // while we have 'encloser'...
545: size_t pos_after=0;
1.297 moko 546: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 547: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 548: to<<from->mid(pos_after, pos_before);
1.257 misha 549: to<<*sencloser; // doubling encloser
1.224 misha 550: }
551: // last piece
1.297 moko 552: size_t from_length=from->length();
1.224 misha 553: if(pos_after<from_length)
1.297 moko 554: to<<from->mid(pos_after, from_length);
1.257 misha 555: to<<*sencloser;
1.297 moko 556: } else {
557: to<<*sencloser<<*sencloser;
558: }
1.224 misha 559: }
560:
1.319 moko 561: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 562: if(output_column_names) {
563: if(table.columns()) { // named table
1.319 moko 564: if(control_chars.encloser) {
1.297 moko 565: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 566: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 567: if(i.has_next())
1.319 moko 568: result<<*control_chars.sseparator;
1.297 moko 569: }
570: } else {
571: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
572: result<<*i.next();
573: if(i.has_next())
1.319 moko 574: result<<*control_chars.sseparator;
1.297 moko 575: }
576: }
577: } else { // nameless table [we were asked to output column names]
578: if(int lsize=table.count()?table[0]->count():0)
579: for(int column=0; column<lsize; column++) {
1.319 moko 580: if(control_chars.encloser) {
581: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 582: } else {
583: result<<String::Body::Format(column);
584: }
585: if(column<lsize-1){
1.319 moko 586: result<<*control_chars.sseparator;
1.298 moko 587: }
1.297 moko 588: }
589: else
590: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
591: }
592: result.append_know_length("\n", 1, String::L_CLEAN);
593: }
594:
595: // data lines
596: Array_iterator<ArrayString*> i(table);
1.319 moko 597: if(control_chars.encloser){
1.297 moko 598: while(i.has_next()) {
599: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 600: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 601: if(c.has_next())
1.319 moko 602: result<<*control_chars.sseparator;
1.297 moko 603: }
604: result.append_know_length("\n", 1, String::L_CLEAN);
605: }
606: } else {
607: while(i.has_next()) {
608: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
609: result<<*c.next();
610: if(c.has_next())
1.319 moko 611: result<<*control_chars.sseparator;
1.297 moko 612: }
613: result.append_know_length("\n", 1, String::L_CLEAN);
614: }
615: }
616: }
1.257 misha 617: #endif // don't use stringstream
1.241 misha 618:
1.297 moko 619:
1.241 misha 620: static void _save(Request& r, MethodParams& params) {
1.237 misha 621: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 622: size_t param_index=1;
623:
624: bool do_append=false;
625: bool output_column_names=true;
626:
627: // mode?
628: if(first_arg=="append")
629: do_append=true;
630: else if(first_arg=="nameless")
631: output_column_names=false;
632: else
633: --param_index;
634:
1.232 misha 635: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.350 ! moko 636: String file_spec=r.full_disk_path(file_name);
1.246 misha 637:
638: if(do_append && file_exist(file_spec))
639: output_column_names=false;
1.188 paf 640:
1.319 moko 641: TableControlChars control_chars;
1.281 misha 642: if(param_index<params.count())
1.288 misha 643: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 644: int valid_options=control_chars.load(*options);
1.281 misha 645: if(valid_options!=options->count())
646: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 647: }
1.281 misha 648:
1.188 paf 649: if(param_index<params.count())
1.318 moko 650: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 651:
1.182 paf 652: Table& table=GET_SELF(r, VTable).table();
1.31 paf 653:
1.297 moko 654: #ifdef USE_STRINGSTREAM
1.269 misha 655: pa_stringstream ost(std::stringstream::out);
1.257 misha 656:
1.319 moko 657: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 658:
659: // write
1.269 misha 660: pa_string data=ost.str();
1.257 misha 661: const char* data_cstr=data.c_str();
1.267 misha 662: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 663: #else
1.257 misha 664: String sdata;
1.224 misha 665:
1.319 moko 666: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 667:
668: // write
1.257 misha 669: const char* data_cstr=sdata.cstr();
1.297 moko 670: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 671: if(*data_cstr) // not empty (when empty it's not heap memory)
672: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 673: #endif
674: }
675:
676: static void _csv_string(Request& r, MethodParams& params) {
677: bool output_column_names=true;
678: size_t param_index=0;
679: if(params.count()>0 && params[0].is_string()) {
680: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
681: output_column_names=false;
682: param_index++;
683: } else {
1.318 moko 684: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 685: }
1.224 misha 686: }
1.240 misha 687:
1.319 moko 688: TableControlChars control_chars;
1.297 moko 689: if(param_index<params.count())
690: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 691: int valid_options=control_chars.load(*options);
1.297 moko 692: if(valid_options!=options->count())
693: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
694: }
695:
696: Table& table=GET_SELF(r, VTable).table();
697:
698: #ifdef USE_STRINGSTREAM
699: pa_stringstream ost(std::stringstream::out);
700:
1.319 moko 701: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 702:
1.338 moko 703: r.write(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
1.297 moko 704: #else
705: String sdata;
706:
1.319 moko 707: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 708:
1.338 moko 709: r.write(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
1.297 moko 710: #endif
1.224 misha 711: }
712:
1.280 misha 713: static void _count(Request& r, MethodParams& params) {
714: Table& table=GET_SELF(r, VTable).table();
715: size_t result=0;
716: if(params.count()) {
717: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
718: if(param == "columns")
1.310 moko 719: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 720: else if(param == "cells")
721: result = table.count() ? table[table.current()]->count() : 0;
722: else if(param == "rows") // synonim for ^table.count[]
723: result = table.count();
724: else
725: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
726: } else
727: result = table.count();
728:
1.338 moko 729: r.write(*new VInt(result));
1.6 paf 730: }
731:
1.182 paf 732: static void _line(Request& r, MethodParams&) {
733: int result=1+GET_SELF(r, VTable).table().current();
1.338 moko 734: r.write(*new VInt(result));
1.6 paf 735: }
736:
1.182 paf 737: static void _offset(Request& r, MethodParams& params) {
738: Table& table=GET_SELF(r, VTable).table();
739: if(params.count()) {
1.133 paf 740: bool absolute=false;
1.182 paf 741: if(params.count()>1) {
742: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 743: if(whence=="cur")
1.134 paf 744: absolute=false;
1.133 paf 745: else if(whence=="set")
1.134 paf 746: absolute=true;
1.133 paf 747: else
1.318 moko 748: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 749: }
1.133 paf 750:
1.211 paf 751: int offset=params.as_int(params.count()-1, "offset must be expression", r);
752: table.offset(absolute, offset);
1.151 paf 753: } else
1.338 moko 754: r.write(*new VInt(table.current()));
1.6 paf 755: }
756:
1.182 paf 757: static void _menu(Request& r, MethodParams& params) {
1.263 misha 758: InCycle temp(r);
1.221 paf 759:
1.182 paf 760: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 761:
1.182 paf 762: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 763:
1.182 paf 764: Table& table=GET_SELF(r, VTable).table();
1.293 misha 765: size_t saved_current=table.current();
1.7 paf 766:
1.251 misha 767: if(delim_maybe_code) { // delimiter set
1.250 misha 768: bool need_delim=false;
1.316 moko 769: for(size_t row=0; row<table.count(); row++) {
1.250 misha 770: table.set_current(row);
771:
1.334 moko 772: Value& sv_processed=r.process(body_code);
1.341 moko 773: TempSkip4Delimiter skip(r);
1.250 misha 774:
775: const String* s_processed=sv_processed.get_string();
1.251 misha 776: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 777: if(need_delim) // need delim & iteration produced string?
1.338 moko 778: r.write(r.process(*delim_maybe_code));
1.250 misha 779: else
780: need_delim=true;
781: }
782:
1.338 moko 783: r.write(sv_processed);
1.242 misha 784:
1.341 moko 785: if(skip.check_break())
1.250 misha 786: break;
787: }
788: } else {
1.316 moko 789: for(size_t row=0; row<table.count(); row++) {
1.250 misha 790: table.set_current(row);
791:
792: r.process_write(body_code);
793:
1.341 moko 794: if(r.check_skip_break())
1.250 misha 795: break;
1.7 paf 796: }
797: }
1.99 parser 798: table.set_current(saved_current);
1.7 paf 799: }
800:
1.110 parser 801: #ifndef DOXYGEN
1.74 paf 802: struct Row_info {
1.166 paf 803: Request *r;
1.74 paf 804: Table *table;
1.182 paf 805: Value* key_code;
806: size_t key_field;
807: Array<int>* value_fields;
1.315 moko 808: Value* value_code;
1.182 paf 809: HashStringValue* hash;
1.174 paf 810: Table2hash_distint distinct;
1.182 paf 811: size_t row;
1.227 misha 812: Table2hash_value_type value_type;
1.74 paf 813: };
1.110 parser 814: #endif
1.182 paf 815: static void table_row_to_hash(Table::element_type row, Row_info *info) {
816: const String* key;
817: if(info->key_code) {
818: info->table->set_current(info->row++); // change context row
1.334 moko 819: Value& sv_processed=info->r->process(*info->key_code);
1.166 paf 820: key=&sv_processed.as_string();
1.227 misha 821: } else {
1.182 paf 822: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 823: }
1.166 paf 824:
825: if(!key)
826: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 827:
1.243 misha 828: bool exist=false;
829: switch(info->value_type) {
830: case C_STRING: {
1.317 moko 831: if(info->value_fields->count()){
832: size_t index=info->value_fields->get(0);
833: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
834: } else {
835: exist=info->hash->put_dont_replace(*key, VString::empty());
836: }
1.243 misha 837: break;
1.227 misha 838: }
1.243 misha 839: case C_HASH: {
1.182 paf 840: VHash* vhash=new VHash;
841: HashStringValue& hash=vhash->hash();
842: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
843: size_t value_field=i.next();
844: if(value_field<row->count())
1.314 moko 845: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 846: }
847:
1.227 misha 848: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 849: break;
1.174 paf 850: }
1.243 misha 851: case C_TABLE: {
852: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 853: Table* table;
1.227 misha 854: if(vtable) {
1.243 misha 855: if(info->distinct==D_ILLEGAL) {
856: exist=true;
857: break;
858: }
1.174 paf 859: table=vtable->get_table();
1.227 misha 860: } else {
1.174 paf 861: // no? creating table of same structure as source
1.179 paf 862: Table::Action_options table_options(0, 0);
1.182 paf 863: table=new Table(*info->table, table_options/*no rows, just structure*/);
864: info->hash->put(*key, new VTable(table));
1.174 paf 865: }
1.308 moko 866: Table::element_type row_copy(new ArrayString(row->count()));
867: row_copy->append(*row);
868: *table+=row_copy;
1.243 misha 869: break;
1.174 paf 870: }
1.315 moko 871: case C_CODE: {
872: if(!info->key_code)
873: info->table->set_current(info->row++); // change context row
1.334 moko 874: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code));
1.315 moko 875: break;
876: }
1.74 paf 877: }
1.227 misha 878: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 879: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 880: }
1.235 misha 881:
882: Table2hash_value_type get_value_type(Value& vvalue_type){
883: if(vvalue_type.is_string()) {
884: const String& svalue_type=*vvalue_type.get_string();
885: if(svalue_type == "table"){
886: return C_TABLE;
887: } else if (svalue_type == "string") {
888: return C_STRING;
889: } else if (svalue_type == "hash") {
890: return C_HASH;
891: } else {
1.314 moko 892: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 893: }
894: } else {
1.314 moko 895: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 896: }
897: }
898:
1.315 moko 899: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
900: if(vdistinct.is_string()) {
901: const String& sdistinct=*vdistinct.get_string();
902: if(sdistinct!="tables")
903: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
904: value_type=C_TABLE;
905: return D_FIRST;
906: }
907: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
908: }
909:
1.182 paf 910: static void _hash(Request& r, MethodParams& params) {
911: Table& self_table=GET_SELF(r, VTable).table();
912: VHash& result=*new VHash;
1.238 misha 913: if(Table::columns_type columns=self_table.columns()){
1.182 paf 914: if(columns->count()>0) {
1.174 paf 915: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 916: Table2hash_value_type value_type=C_HASH;
1.182 paf 917: int param_index=params.count()-1;
1.166 paf 918: if(param_index>0) {
1.315 moko 919:
920: if(params[1].get_junction())
921: value_type=C_CODE;
922:
923: 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 924: --param_index;
925: int valid_options=0;
1.238 misha 926: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 927: valid_options++;
1.335 moko 928: distinct=get_distinct(r.process(*vdistinct_code), value_type);
1.166 paf 929: }
1.238 misha 930: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
931: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 932: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 933: if(value_type==C_CODE)
934: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 935: valid_options++;
1.335 moko 936: value_type=get_value_type(r.process(*vvalue_type_code));
1.238 misha 937: }
1.226 misha 938:
1.182 paf 939: if(valid_options!=options->count())
1.272 misha 940: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 941: }
942: }
1.238 misha 943:
1.315 moko 944: if(param_index==2) // options were specified but not as hash
1.289 misha 945: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
946:
1.182 paf 947: Array<int> value_fields;
1.315 moko 948: Value* value_code=0;
949:
1.238 misha 950: if(param_index==0){ // list of columns wasn't specified
951: if(value_type==C_STRING) // $.type[string]
1.314 moko 952: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 953:
954: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
955: value_fields+=i;
956:
1.315 moko 957: } else { // list of columns or code was specified
1.227 misha 958: if(value_type==C_TABLE)
1.314 moko 959: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 960:
1.315 moko 961: Value& value_fields_param=params[1];
1.317 moko 962: if(value_fields_param.get_junction()){ // code specified
1.315 moko 963: value_code=&value_fields_param;
964: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 965: const String &field_name=*value_fields_param.get_string();
966: if(!field_name.is_empty())
967: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 968: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
969: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
970: const String& value_field_name =*i.next()->get(0);
971: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 972: }
973: } else
1.315 moko 974: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 975: }
1.74 paf 976:
1.340 moko 977: if(value_type==C_STRING && value_fields.count()>1)
978: throw Exception(PARSER_RUNTIME, 0, "you can't specify more then one value field with option $.type[string]");
1.182 paf 979:
980: {
981: Value* key_param=¶ms[0];
1.193 paf 982: Row_info info={
983: &r,
984: &self_table,
1.315 moko 985: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 986: /*key_field=*/0/*filled below*/,
1.193 paf 987: &value_fields,
1.315 moko 988: value_code,
1.193 paf 989: &result.hash(),
990: distinct,
1.227 misha 991: /*row=*/0,
992: value_type
1.193 paf 993: };
1.314 moko 994: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 995:
996: int saved_current=self_table.current();
997: self_table.for_each(table_row_to_hash, &info);
998: self_table.set_current(saved_current);
1.207 paf 999:
1000: result.extract_default();
1.182 paf 1001: }
1.74 paf 1002: }
1.238 misha 1003: }
1.338 moko 1004: r.write(result);
1.74 paf 1005: }
1006:
1.110 parser 1007: #ifndef DOXYGEN
1.344 moko 1008: struct Table_seq_item : public PA_Allocated {
1.182 paf 1009: ArrayString* row;
1.34 paf 1010: union {
1.182 paf 1011: const char *c_str;
1.34 paf 1012: double d;
1013: } value;
1.32 paf 1014: };
1.110 parser 1015: #endif
1.34 paf 1016: static int sort_cmp_string(const void *a, const void *b) {
1017: return strcmp(
1.78 paf 1018: static_cast<const Table_seq_item *>(a)->value.c_str,
1019: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1020: );
1021: }
1022: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1023: double va=static_cast<const Table_seq_item *>(a)->value.d;
1024: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1025: if(va<vb)
1026: return -1;
1027: else if(va>vb)
1028: return +1;
1029: else
1030: return 0;
1031: }
1.182 paf 1032: static void _sort(Request& r, MethodParams& params) {
1033: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1034:
1.339 moko 1035: 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 1036:
1.182 paf 1037: Table& old_table=GET_SELF(r, VTable).table();
1038: Table& new_table=*new Table(old_table.columns());
1.34 paf 1039:
1.344 moko 1040: Table_seq_item* seq=new Table_seq_item[old_table.count()];
1.34 paf 1041: int i;
1042:
1043: // calculate key values
1044: bool key_values_are_strings=true;
1.182 paf 1045: int old_count=old_table.count();
1046: for(i=0; i<old_count; i++) {
1.101 parser 1047: old_table.set_current(i);
1.32 paf 1048: // calculate key value
1.182 paf 1049: seq[i].row=old_table[i];
1.335 moko 1050: Value& value=r.process(key_maker);
1.34 paf 1051: if(i==0) // determining key values type by first one
1052: key_values_are_strings=value.is_string();
1053:
1054: if(key_values_are_strings)
1055: seq[i].value.c_str=value.as_string().cstr();
1056: else
1.287 moko 1057: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1058: }
1.265 misha 1059:
1060: // @todo: handle this elsewhere
1061: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1062: for(i=0; i<old_count; i++)
1063: if(*seq[i].value.c_str)
1.332 moko 1064: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), pa_UTF8_charset).cstr();
1.265 misha 1065: }
1066:
1.266 misha 1067: // sort keys
1.295 moko 1068: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1069:
1.34 paf 1070: // reorder table as they require in 'seq'
1.182 paf 1071: for(i=0; i<old_count; i++)
1072: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1073:
1074: delete[] seq;
1.32 paf 1075:
1.116 parser 1076: // replace any previous table value
1.182 paf 1077: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1078: }
1079:
1.176 paf 1080: #ifndef DOXYGEN
1.182 paf 1081: struct Expression_is_true_info {
1.176 paf 1082: Request* r;
1083: Value* expression_code;
1084: };
1085: #endif
1.275 misha 1086:
1.191 paf 1087: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1.335 moko 1088: return info->r->process(*info->expression_code).as_bool();
1.176 paf 1089: }
1.275 misha 1090:
1091: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1092: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1093: Table::Action_options o=get_action_options(r, params, 1, table);
1094: if(params.count()>2)
1095: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1096: Expression_is_true_info info={&r, &expression_code};
1097: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1098: }
1.275 misha 1099:
1100: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1101: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1102: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1103: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1104: return table.locate(name, value, o);
1105: }
1.275 misha 1106:
1.182 paf 1107: static void _locate(Request& r, MethodParams& params) {
1108: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1109:
1.291 moko 1110: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1111: _locate_expression(table, r, params) :
1112: _locate_name_value(table, r, params);
1.338 moko 1113: r.write(VBool::get(result));
1.145 paf 1114: }
1.182 paf 1115:
1116:
1.191 paf 1117: static void _flip(Request& r, MethodParams&) {
1.182 paf 1118: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1119: Table& new_table=*new Table(0);
1.182 paf 1120: if(size_t old_count=old_table.count())
1.310 moko 1121: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1122: for(size_t column=0; column<old_cols; column++) {
1123: Table::element_type new_row(new ArrayString(old_count));
1124: for(size_t i=0; i<old_count; i++) {
1125: Table::element_type old_row=old_table[i];
1126: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1127: }
1.182 paf 1128: new_table+=new_row;
1.39 paf 1129: }
1130:
1.338 moko 1131: r.write(*new VTable(&new_table));
1.39 paf 1132: }
1133:
1.293 misha 1134: static void _foreach(Request& r, MethodParams& params) {
1135: InCycle temp(r);
1136:
1.331 moko 1137: const String* rownum_var_name=¶ms.as_string(0, "rownum-var name must be string");
1138: const String* value_var_name=¶ms.as_string(1, "value-var name must be string");
1.293 misha 1139:
1140: Value& body_code=params.as_junction(2, "body must be code");
1141:
1142: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1143:
1144: Table& table=GET_SELF(r, VTable).table();
1145: size_t saved_current=table.current();
1146:
1.331 moko 1147: rownum_var_name=rownum_var_name->is_empty()? 0 : rownum_var_name;
1148: value_var_name=value_var_name->is_empty()? 0 : value_var_name;
1.293 misha 1149:
1150: Value* var_context=r.get_method_frame()->caller();
1151:
1152: if(delim_maybe_code) { // delimiter set
1153: bool need_delim=false;
1.316 moko 1154: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1155: table.set_current(row);
1156:
1157: if(rownum_var_name)
1.299 moko 1158: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1159: if(value_var_name)
1.299 moko 1160: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1161:
1.334 moko 1162: Value& sv_processed=r.process(body_code);
1.341 moko 1163: TempSkip4Delimiter skip(r);
1.293 misha 1164:
1165: const String* s_processed=sv_processed.get_string();
1166: if(s_processed && !s_processed->is_empty()) { // we have body
1167: if(need_delim) // need delim & iteration produced string?
1.338 moko 1168: r.write(r.process(*delim_maybe_code));
1.293 misha 1169: else
1170: need_delim=true;
1171: }
1172:
1.338 moko 1173: r.write(sv_processed);
1.293 misha 1174:
1.341 moko 1175: if(skip.check_break())
1.293 misha 1176: break;
1177: }
1178: } else {
1.316 moko 1179: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1180: table.set_current(row);
1181:
1182: if(rownum_var_name)
1.300 moko 1183: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1184: if(value_var_name)
1.300 moko 1185: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1186:
1187: r.process_write(body_code);
1188:
1.341 moko 1189: if(r.check_skip_break())
1.293 misha 1190: break;
1191: }
1192: }
1193: table.set_current(saved_current);
1194: }
1195:
1.309 moko 1196: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1197: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1198: }
1199:
1200: inline Table::element_type row_from_string(Request& r, Value ¶m){
1201: if(!param.is_string() && !param.get_junction())
1202: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1203:
1204: const String& string=r.process_to_string(param);
1.41 paf 1205:
1206: // parse cells
1.182 paf 1207: Table::element_type row=new ArrayString;
1.326 moko 1208: string.split(*row, 0, "\t", String::L_AS_IS);
1.41 paf 1209:
1.309 moko 1210: return row;
1.41 paf 1211: }
1212:
1.309 moko 1213: static void _append(Request& r, MethodParams& params) {
1214: VTable vtable=GET_SELF(r, VTable);
1215: Table& table=vtable.table();
1.306 moko 1216:
1.309 moko 1217: HashStringValue* hash=params[0].get_hash();
1218: if(hash){
1219: table+=new ArrayString();
1220: size_t saved_current=table.current();
1221: table.set_current(table.count()-1);
1222: hash->for_each<VTable*>(update_cell, &vtable);
1223: table.set_current(saved_current);
1224: } else {
1225: table+=row_from_string(r, params[0]);
1226: }
1227: }
1.306 moko 1228:
1.309 moko 1229: static void _insert(Request& r, MethodParams& params) {
1230: VTable vtable=GET_SELF(r, VTable);
1231: Table& table=vtable.table();
1232: HashStringValue* hash=params[0].get_hash();
1233: if(hash){
1234: table.insert(table.current(), new ArrayString());
1235: hash->for_each<VTable*>(update_cell, &vtable);
1236: } else {
1237: table.insert(table.current(), row_from_string(r, params[0]));
1238: }
1.306 moko 1239: }
1240:
1.311 moko 1241: static void _delete(Request& r, MethodParams&) {
1.307 moko 1242: Table& table=GET_SELF(r, VTable).table();
1243: table.remove_current();
1244: }
1245:
1.182 paf 1246: static void join_named_row(Table& src, Table* dest) {
1247: Table::columns_type dest_columns=dest->columns();
1248: size_t dest_columns_count=dest_columns->count();
1249: Table::element_type dest_row(new ArrayString(dest_columns_count));
1250: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1251: const String* src_item=src.item(*dest_columns->get(dest_column));
1252: *dest_row+=src_item?src_item:new String;
1253: }
1254: *dest+=dest_row;
1255: }
1256: static void join_nameless_row(Table& src, Table* dest) {
1257: *dest+=src[src.current()];
1258: }
1259: static void _join(Request& r, MethodParams& params) {
1.288 misha 1260: Table& src=*params.as_table(0, "source");
1.176 paf 1261:
1.268 misha 1262: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1263:
1.182 paf 1264: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1265: if(&src == &dest)
1.318 moko 1266: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1267:
1.193 paf 1268: if(dest.columns()) // dest is named
1.182 paf 1269: src.table_for_each(join_named_row, &dest, o);
1270: else // dest is nameless
1271: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1272: }
1273:
1.94 parser 1274: #ifndef DOXYGEN
1.169 paf 1275: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1276: ArrayString& columns;
1.218 paf 1277: int columns_count;
1.182 paf 1278: ArrayString* row;
1.94 parser 1279: public:
1.182 paf 1280: Table* table;
1281: public:
1282: Table_sql_event_handlers() :
1283: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1284: }
1285:
1.279 misha 1286: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1287: try {
1.274 moko 1288: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1289: return false;
1290: } catch(...) {
1.343 moko 1291: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_column");
1.170 paf 1292: return true;
1293: }
1294: }
1.348 moko 1295: bool before_rows(SQL_Error& error) {
1296: if(table) {
1297: error=SQL_Error("result must contain exactly one table");
1298: return true;
1299: }
1.170 paf 1300: try {
1.182 paf 1301: table=new Table(&columns);
1.218 paf 1302: columns_count=columns.count();
1.170 paf 1303: return false;
1304: } catch(...) {
1.343 moko 1305: error=SQL_Error("exception occurred in Table_sql_event_handlers::before_rows");
1.170 paf 1306: return true;
1307: }
1308: }
1309: bool add_row(SQL_Error& error) {
1310: try {
1.218 paf 1311: *table+=row=new ArrayString(columns_count);
1.170 paf 1312: return false;
1313: } catch(...) {
1.343 moko 1314: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row");
1.170 paf 1315: return true;
1316: }
1317: }
1.279 misha 1318: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1319: try {
1.292 misha 1320: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1321: return false;
1322: } catch(...) {
1.343 moko 1323: error=SQL_Error("exception occurred in Table_sql_event_handlers::add_row_cell");
1.170 paf 1324: return true;
1325: }
1.94 parser 1326: }
1327: };
1328: #endif
1.204 paf 1329:
1.347 moko 1330: static void marshal_bind( HashStringValue::key_type aname, HashStringValue::value_type avalue, SQL_Driver::Placeholder** pptr) {
1.204 paf 1331: SQL_Driver::Placeholder& ph=**pptr;
1332: ph.name=aname.cstr();
1.261 misha 1333: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1334: ph.is_null=avalue->get_class()==void_class;
1335: ph.were_updated=false;
1336:
1337: (*pptr)++;
1338: }
1339:
1340: // not static, used elsewhere
1341: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1342: int hash_count=hash.count();
1.344 moko 1343: placeholders=new(PointerGC) SQL_Driver::Placeholder[hash_count];
1.204 paf 1344: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1345: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1346: return hash_count;
1347: }
1348:
1349: // not static, used elsewhere
1350: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1351: SQL_Driver::Placeholder* ph=placeholders;
1352: for(int i=0; i<placeholder_count; i++, ph++)
1353: if(ph->were_updated) {
1354: Value* value;
1355: if(ph->is_null)
1.248 misha 1356: value=VVoid::get();
1.204 paf 1357: else
1.256 misha 1358: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1359: hash.put(ph->name, value);
1360: }
1361: }
1362:
1.182 paf 1363: static void _sql(Request& r, MethodParams& params) {
1364: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1365:
1.204 paf 1366: HashStringValue* bind=0;
1.244 misha 1367: ulong limit=SQL_NO_LIMIT;
1.100 parser 1368: ulong offset=0;
1.281 misha 1369: if(params.count()>1)
1.288 misha 1370: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1371: int valid_options=0;
1372: if(Value* vbind=options->get(sql_bind_name)) {
1373: valid_options++;
1374: bind=vbind->get_hash();
1375: }
1376: if(Value* vlimit=options->get(sql_limit_name)) {
1377: valid_options++;
1.335 moko 1378: limit=(ulong)r.process(*vlimit).as_double();
1.281 misha 1379: }
1380: if(Value* voffset=options->get(sql_offset_name)) {
1381: valid_options++;
1.335 moko 1382: offset=(ulong)r.process(*voffset).as_double();
1.281 misha 1383: }
1384: if(valid_options!=options->count())
1385: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1386: }
1.49 paf 1387:
1.204 paf 1388: SQL_Driver::Placeholder* placeholders=0;
1389: uint placeholders_count=0;
1390: if(bind)
1391: placeholders_count=marshal_binds(*bind, placeholders);
1392:
1.182 paf 1393: const String& statement_string=r.process_to_string(statement);
1.337 moko 1394: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
1.260 misha 1395:
1.182 paf 1396: Table_sql_event_handlers handlers;
1.294 moko 1397:
1.182 paf 1398: r.connection()->query(
1.203 paf 1399: statement_cstr,
1.208 paf 1400: placeholders_count, placeholders,
1.203 paf 1401: offset, limit,
1.160 paf 1402: handlers,
1403: statement_string);
1.135 paf 1404:
1.204 paf 1405: if(bind)
1406: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1407:
1.182 paf 1408: Table& result=
1409: handlers.table?*handlers.table: // query resulted in table? return it
1410: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1411:
1412: // replace any previous table value
1.182 paf 1413: GET_SELF(r, VTable).set_table(result);
1.49 paf 1414: }
1415:
1.233 misha 1416: static void _columns(Request& r, MethodParams& params) {
1417: const String* column_column_name;
1418: if(params.count()>0)
1419: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1420: else
1421: column_column_name=new String("column");
1.88 parser 1422:
1.182 paf 1423: Table::columns_type result_columns(new ArrayString);
1.233 misha 1424: *result_columns+=column_column_name;
1.182 paf 1425: Table& result_table=*new Table(result_columns);
1.88 parser 1426:
1.182 paf 1427: Table& source_table=GET_SELF(r, VTable).table();
1428: if(Table::columns_type source_columns=source_table.columns()) {
1429: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1430: Table::element_type result_row(new ArrayString);
1431: *result_row+=i.next();
1432: result_table+=result_row;
1.88 parser 1433: }
1434: }
1435:
1.338 moko 1436: r.write(*new VTable(&result_table));
1.88 parser 1437: }
1438:
1.182 paf 1439: static void _select(Request& r, MethodParams& params) {
1.231 misha 1440: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1441:
1.182 paf 1442: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1443:
1.277 moko 1444: int limit=source_table.count();
1.282 misha 1445: int offset=0;
1446: bool reverse=false;
1.278 moko 1447:
1.281 misha 1448: if(params.count()>1)
1449: if(HashStringValue* options=params.as_hash(1)) {
1450: int valid_options=0;
1451: if(Value* vlimit=options->get(sql_limit_name)) {
1452: valid_options++;
1.335 moko 1453: limit=r.process(*vlimit).as_int();
1.281 misha 1454: }
1455: if(Value* voffset=options->get(sql_offset_name)) {
1456: valid_options++;
1.335 moko 1457: offset=r.process(*voffset).as_int();
1.281 misha 1458: }
1459: if(Value* vreverse=options->get(table_reverse_name)) {
1460: valid_options++;
1.335 moko 1461: reverse=r.process(*vreverse).as_bool();
1.281 misha 1462: }
1463: if(valid_options!=options->count())
1.288 misha 1464: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1465: }
1466:
1467: Table& result_table=*new Table(source_table.columns());
1.277 moko 1468:
1.283 misha 1469: size_t size=source_table.count();
1470: if(offset<0)
1471: offset+=size;
1.284 misha 1472: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1473: size_t saved_current=source_table.current();
1474: size_t appended=0;
1475:
1476: if(reverse){
1477: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1478: source_table.set_current(row);
1479:
1.336 moko 1480: bool condition=r.process(vcondition).as_bool();
1.282 misha 1481:
1482: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1483: result_table+=source_table[row];
1484: if(row==0) break;
1485: }
1486: } else {
1487: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1488: source_table.set_current(row);
1.148 paf 1489:
1.336 moko 1490: bool condition=r.process(vcondition).as_bool();
1.277 moko 1491:
1.282 misha 1492: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1493: result_table+=source_table[row];
1494: }
1.277 moko 1495: }
1.282 misha 1496: source_table.set_current(saved_current);
1.148 paf 1497: }
1498:
1.338 moko 1499: r.write(*new VTable(&result_table));
1.148 paf 1500: }
1501:
1.66 paf 1502: // constructor
1503:
1.182 paf 1504: MTable::MTable(): Methoded("table") {
1.142 paf 1505: // ^table::create{data}
1506: // ^table::create[nameless]{data}
1507: // ^table::create[table]
1.236 misha 1508: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1509: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1510: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1511:
1.142 paf 1512: // ^table::load[file]
1513: // ^table::load[nameless;file]
1.168 paf 1514: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1515:
1516: // ^table.save[file]
1517: // ^table.save[nameless;file]
1.188 paf 1518: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1519:
1.224 misha 1520: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1521:
1.297 moko 1522: // ^table.csv-string[]
1523: // ^table.csv-string[nameless]
1524: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1525: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1526:
1.6 paf 1527: // ^table.count[]
1.280 misha 1528: // ^table.count[rows]
1529: // ^table.count[columns]
1530: // ^table.count[cells]
1531: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1532:
1533: // ^table.line[]
1.66 paf 1534: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1535:
1.10 paf 1536: // ^table.offset[]
1.133 paf 1537: // ^table.offset(offset)
1538: // ^table.offset[cur|set](offset)
1539: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1540:
1.10 paf 1541: // ^table.menu{code}
1542: // ^table.menu{code}[delim]
1.66 paf 1543: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1544:
1.239 misha 1545: // ^table.hash[key field name]
1546: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1547: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1548:
1.102 parser 1549: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1550: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1551: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1552:
1.36 paf 1553: // ^table.locate[field;value]
1.176 paf 1554: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1555:
1556: // ^table.flip[]
1.66 paf 1557: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1558:
1.293 misha 1559: // ^table.foreach[row-num;value]{code}
1560: // ^table.foreach[row-num;value]{code}[delim]
1561: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1562:
1.306 moko 1563: // ^table.append{row{tab}data}
1.66 paf 1564: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1565:
1.306 moko 1566: // ^table.insert{row{tab}data} before current row
1567: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1568:
1.307 moko 1569: // ^table.delete[] current row
1570: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1571:
1.157 paf 1572: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1573: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1574:
1575:
1.239 misha 1576: // ^table::sql[query]
1577: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1578: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1579:
1.239 misha 1580: // ^table.columns[[column name]]
1.233 misha 1581: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1582:
1583: // ^table.select(expression) = table
1.277 moko 1584: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1585: }
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