Annotation of parser3/src/classes/table.C, revision 1.328
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.312 moko 4: Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com)
1.144 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.154 paf 6: */
1.221 paf 7:
1.105 parser 8: #include "classes.h"
1.182 paf 9: #include "pa_vmethod_frame.h"
10:
1.16 paf 11: #include "pa_common.h"
1.1 paf 12: #include "pa_request.h"
1.265 misha 13: #include "pa_charsets.h"
1.1 paf 14: #include "pa_vtable.h"
1.6 paf 15: #include "pa_vint.h"
1.51 paf 16: #include "pa_sql_connection.h"
1.72 paf 17: #include "pa_vbool.h"
1.277 moko 18: #include "pa_array.h"
1.1 paf 19:
1.305 moko 20: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
21: #include <sstream>
22: #define USE_STRINGSTREAM
23: #endif
24:
1.328 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.327 2016/09/21 00:04:05 moko Exp $";
1.286 moko 26:
1.66 paf 27: // class
28:
1.182 paf 29: class MTable: public Methoded {
1.66 paf 30: public: // VStateless_class
1.264 misha 31: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 32: public:
1.182 paf 33: MTable();
1.66 paf 34: };
1.1 paf 35:
1.182 paf 36: // global variable
37:
1.313 moko 38: DECLARE_CLASS_VAR(table, new MTable);
1.182 paf 39:
40: #define TABLE_REVERSE_NAME "reverse"
41:
42: // globals
43:
1.203 paf 44: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 45: String sql_limit_name(PA_SQL_LIMIT_NAME);
46: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 47: String sql_default_name(SQL_DEFAULT_NAME);
48: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 49: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 50: String table_reverse_name(TABLE_REVERSE_NAME);
51:
1.1 paf 52: // methods
1.66 paf 53:
1.319 moko 54: static Table::Action_options get_action_options(Request& r, MethodParams& params, size_t options_index, const Table& source) {
1.176 paf 55: Table::Action_options result;
1.268 misha 56: if(params.count() <= options_index)
1.182 paf 57: return result;
58:
1.288 misha 59: HashStringValue* options=params.as_hash(options_index);
1.176 paf 60: if(!options)
61: return result;
62:
63: result.defined=true;
64: bool defined_offset=false;
65:
66: int valid_options=0;
1.182 paf 67: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 68: valid_options++;
69: defined_offset=true;
70: if(voffset->is_string()) {
1.182 paf 71: const String& soffset=*voffset->get_string();
1.176 paf 72: if(soffset == "cur")
73: result.offset=source.current();
74: else
1.318 moko 75: throw Exception(PARSER_RUNTIME, &soffset, "must be 'cur' string or expression");
1.176 paf 76: } else
77: result.offset=r.process_to_value(*voffset).as_int();
78: }
1.182 paf 79: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 80: valid_options++;
81: result.limit=r.process_to_value(*vlimit).as_int();
82: }
1.182 paf 83: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
84: valid_options++;
85: result.reverse=r.process_to_value(*vreverse).as_bool();
86: if(result.reverse && !defined_offset)
87: result.offset=source.count()-1;
88: }
89:
90: if(valid_options!=options->count())
1.272 misha 91: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 92:
93: return result;
94: }
1.157 paf 95:
1.319 moko 96: struct TableControlChars {
97: char separator; const String* sseparator;
1.236 misha 98: char encloser; const String* sencloser;
99:
1.320 moko 100: char separators[3];
101:
1.319 moko 102: TableControlChars():
103: separator('\t'), sseparator(new String("\t")),
1.236 misha 104: encloser(0), sencloser(0)
1.320 moko 105: {
106: strcpy(separators,"\t\n");
107: }
108:
1.236 misha 109: int load( HashStringValue& options ) {
110: int result=0;
111: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
1.319 moko 112: sseparator=&vseparator->as_string();
113: if(sseparator->length()!=1)
1.323 moko 114: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one byte character");
1.319 moko 115: separator=sseparator->first_char();
1.320 moko 116: separators[0]=separator;
1.236 misha 117: result++;
118: }
119: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
120: sencloser=&vencloser->as_string();
1.297 moko 121: if(sencloser->is_empty()){
122: encloser=0;
123: } else {
1.325 moko 124: if(sencloser->length()!=1)
125: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be empty or one byte character");
126: encloser=sencloser->first_char();
1.297 moko 127: }
1.236 misha 128: result++;
129: }
130: return result;
131: }
132: };
133:
1.319 moko 134:
1.322 moko 135: struct lsplit_sresult {
136: String* piece;
137: char delim;
138:
139: lsplit_sresult() : piece(0), delim(0){}
140:
141: operator bool() { return piece!=0; }
142:
143: void append(String *str){
144: if(piece)
145: *piece << *str;
146: else
147: piece = str;
148: }
149: };
150:
151: class StringSplitHelper : public String {
152: public:
153: char* base;
154:
155: StringSplitHelper(String astring) : String(astring), base(cstrm()) {}
156:
157: bool check_lang(const char *pos){
158: return langs.check_lang(L_AS_IS, pos-base, 1);
159: }
160:
161: String *extract(char *pos){
162: String *result=new String;
163: // first: their langs
164: result->langs.append(result->body, langs, pos-base, strlen(pos));
165: // next: letters themselves
166: result->body=Body(pos);
167: return result;
168: }
169: };
170:
171: inline lsplit_sresult lsplit(char* *string_ref, const char* delims, StringSplitHelper& helper) {
172: lsplit_sresult result;
173: if(char *pos=*string_ref) {
1.327 moko 174: while(pos=strpbrk(pos, delims)) {
175: if(helper.check_lang(pos)){
176: result.delim=*pos;
177: *pos=0;
1.322 moko 178: result.piece=helper.extract(*string_ref);
1.327 moko 179: *string_ref=pos+1;
1.322 moko 180: return result;
181: }
1.327 moko 182: pos++;
1.322 moko 183: }
184: result.piece=helper.extract(*string_ref);
185: *string_ref=0;
186: }
187: return result;
188: }
189:
190: static lsplit_sresult lsplit(char** string_ref, const char* delims, char encloser, StringSplitHelper& helper) {
191: lsplit_sresult result;
192:
193: if(char *pos=*string_ref) {
194: if(encloser && *pos==encloser && helper.check_lang(pos)) {
195: *string_ref=++pos;
196:
197: // we are enclosed, searching for second encloser
198: while(1) {
1.328 ! moko 199: if(pos=strchr(pos, encloser)){
! 200: if(helper.check_lang(pos)){
! 201: *(pos++)=0;
1.322 moko 202: result.append(helper.extract(*string_ref));
1.328 ! moko 203: if(*pos==encloser && helper.check_lang(pos)){ // double-encloser stands for encloser
! 204: *string_ref=pos+1;
1.322 moko 205: } else {
1.328 ! moko 206: *string_ref=pos;
1.322 moko 207: break;
208: }
209: }
1.327 moko 210: } else {
1.322 moko 211: result.append(helper.extract(*string_ref));
212: *string_ref=0;
213: return result;
214: }
215: }
216:
217: // we are no longer enclosed, searching for delimiter
1.328 ! moko 218: while(pos=strpbrk(pos, delims)) {
! 219: if(helper.check_lang(pos)){
! 220: result.delim=*pos;
! 221: if(pos>*string_ref){
! 222: *pos=0;
1.322 moko 223: result.append(helper.extract(*string_ref));
224: }
1.328 ! moko 225: *string_ref=pos+1;
1.322 moko 226: return result;
227: }
1.328 ! moko 228: pos++;
1.322 moko 229: }
230: result.append(helper.extract(*string_ref));
231: *string_ref=0;
232: } else
233: return lsplit(string_ref, delims, helper);
234: }
235: return result;
236: }
237:
238: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
239: if(*data_ref) {
240: while(**data_ref == '\n' && helper.check_lang(*data_ref))
241: (*data_ref)++;
242: }
243: }
244:
1.182 paf 245: static void _create(Request& r, MethodParams& params) {
1.157 paf 246: // clone/copy part?
1.182 paf 247: if(Table *source=params[0].get_table()) {
1.268 misha 248: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 249: if(params.count()>2)
250: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 251: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 252: return;
253: }
1.142 paf 254:
1.236 misha 255: size_t data_param_index=0;
256: bool nameless=false;
257:
258: if(params.count()>1) {
259: if(params[0].is_string()){ // can be nameless only
260: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
261: if(snameless!="nameless")
1.318 moko 262: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 263: nameless=true;
264: data_param_index++;
265: }
266: }
267:
268: HashStringValue *options=0;
1.319 moko 269: TableControlChars control_chars;
1.236 misha 270:
271: size_t options_param_index=data_param_index+1;
1.322 moko 272: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.324 moko 273: if(control_chars.load(*options)!=options->count())
274: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.236 misha 275: }
276:
277: // data
1.182 paf 278: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.322 moko 279: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
280: char *data=sdata.base;
1.44 paf 281:
282: // parse columns
1.182 paf 283: Table::columns_type columns;
1.322 moko 284: if(nameless) {
285: columns=0; // nameless
1.21 paf 286: } else {
1.322 moko 287: columns=new ArrayString;
288: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
289: *columns+=sr.piece;
290: if(sr.delim=='\n')
291: break;
1.182 paf 292: }
1.44 paf 293: }
1.322 moko 294:
295: Table& table=*new Table(columns);
296: int columns_count=columns ? columns->count(): 0;
1.44 paf 297:
298: // parse cells
1.322 moko 299: Table::element_type row(new ArrayString(columns_count));
300: skip_clean_empty_lines(&data, sdata);
301: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
302: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
303: break;
304: *row+=sr.piece;
305: if(sr.delim=='\n') {
306: table+=row;
307: row=new ArrayString(columns_count);
308: skip_clean_empty_lines(&data, sdata);
309: }
310: }
311: // last line [if without \n]
312: if(row->count())
1.182 paf 313: table+=row;
1.322 moko 314:
1.44 paf 315: // replace any previous table value
1.182 paf 316: GET_SELF(r, VTable).set_table(table);
1.44 paf 317: }
318:
1.187 paf 319: struct lsplit_result {
320: char* piece;
321: char delim;
322:
1.321 moko 323: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 324: operator bool() { return piece!=0; }
325: };
326:
1.321 moko 327: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
328: lsplit_result result(*string_ref);
329: if(result.piece) {
330: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 331: result.delim=*v;
332: *v=0;
1.321 moko 333: *string_ref=v+1;
1.187 paf 334: return result;
335: }
1.322 moko 336: *string_ref=0;
1.273 misha 337: }
338: return result;
1.187 paf 339: }
340:
1.320 moko 341: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 342: lsplit_result result(*string_ref);
1.187 paf 343:
1.321 moko 344: if(result.piece) {
345: if(encloser && *result.piece==encloser) {
346: result.piece++;
1.187 paf 347:
1.321 moko 348: char c;
1.187 paf 349: char *read;
350: char *write;
1.321 moko 351: write=read=result.piece;
352:
1.290 moko 353: // we are enclosed, searching for second encloser
354: while(c=*read++) {
1.187 paf 355: if(c==encloser) {
1.290 moko 356: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 357: read++;
1.290 moko 358: else
359: break; // note: skipping encloser
1.187 paf 360: }
361: *write++=c;
362: }
1.321 moko 363:
1.290 moko 364: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
365: while(c=*read++) {
1.320 moko 366: if(c==delims[0] || c==delims[1]) {
1.290 moko 367: result.delim=c;
368: break;
369: } else if(c!=encloser)
370: *write++=c;
371: }
1.321 moko 372:
1.187 paf 373: *write=0; // terminate
1.321 moko 374: *string_ref=c ? read : 0;
1.187 paf 375: return result;
376: } else
1.320 moko 377: return lsplit(string_ref, delims);
1.273 misha 378: }
379: return result;
1.187 paf 380: }
381:
382: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 moko 383: while(*data_ref) {
384: if(**data_ref == '\n'){
385: (*data_ref)++;
386: } else {
387: if(**data_ref == '#' )
388: /*nowhere=*/getrow(data_ref);
389: else
390: break;
1.187 paf 391: }
392: }
393: }
394:
1.273 misha 395: static void skip_empty_lines( char** data_ref ) {
1.322 moko 396: if(*data_ref) {
397: while(**data_ref == '\n')
398: (*data_ref)++;
1.273 misha 399: }
400: }
401:
402: typedef void (*Skip_lines_action)(char** data_ref);
403:
1.182 paf 404: static void _load(Request& r, MethodParams& params) {
1.232 misha 405: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 406: int filename_param_index=0;
407: bool nameless=first_param=="nameless";
408: if(nameless)
409: filename_param_index++;
1.182 paf 410: size_t options_param_index=filename_param_index+1;
1.186 paf 411:
412: HashStringValue *options=0;
1.319 moko 413: TableControlChars control_chars;
1.186 paf 414: if(options_param_index<params.count()
1.288 misha 415: && (options=params.as_hash(options_param_index))) {
1.186 paf 416: // cloning, so that we could change [to simplify checks on params inside file_read_text
417: options=new HashStringValue(*options);
1.319 moko 418: control_chars.load(*options);
1.186 paf 419: }
420:
1.44 paf 421: // loading text
1.321 moko 422: char *data=file_load_text(r, r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)), true, options);
1.44 paf 423:
1.319 moko 424: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 425:
1.1 paf 426: // parse columns
1.182 paf 427: Table::columns_type columns;
1.168 paf 428: if(nameless) {
1.322 moko 429: columns=0; // nameless
1.1 paf 430: } else {
1.322 moko 431: columns=new ArrayString;
1.1 paf 432:
1.273 misha 433: skip_lines_action(&data);
1.320 moko 434: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 435: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 436: if(sr.delim=='\n')
437: break;
1.139 paf 438: }
1.1 paf 439: }
1.187 paf 440:
441: Table& table=*new Table(columns);
1.322 moko 442: int columns_count=columns ? columns->count(): 0;
1.1 paf 443:
444: // parse cells
1.218 paf 445: Table::element_type row(new ArrayString(columns_count));
1.273 misha 446: skip_lines_action(&data);
1.320 moko 447: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 448: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
449: break;
1.256 misha 450: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 451: if(sr.delim=='\n') {
452: table+=row;
1.218 paf 453: row=new ArrayString(columns_count);
1.273 misha 454: skip_lines_action(&data);
1.1 paf 455: }
1.187 paf 456: }
457: // last line [if without \n]
458: if(row->count())
1.1 paf 459: table+=row;
1.187 paf 460:
1.1 paf 461: // replace any previous table value
1.182 paf 462: GET_SELF(r, VTable).set_table(table);
1.1 paf 463: }
1.2 paf 464:
1.297 moko 465: #ifdef USE_STRINGSTREAM
1.269 misha 466: #include "gc_allocator.h"
467:
468: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
469: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
470:
1.298 moko 471: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 472: if(from){
1.257 misha 473: to<<encloser;
1.188 paf 474: // while we have 'encloser'...
1.189 paf 475: size_t pos_after=0;
1.297 moko 476: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 477: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 478: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 479: to<<encloser; // doubling encloser
1.188 paf 480: }
481: // last piece
1.297 moko 482: size_t from_length=from->length();
1.188 paf 483: if(pos_after<from_length)
1.297 moko 484: to<<from->mid(pos_after, from_length).cstr();
485: to<<encloser;
486: } else {
487: to<<encloser<<encloser;
488: }
489: }
490:
1.319 moko 491: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 492: if(output_column_names) {
493: if(table.columns()) { // named table
1.319 moko 494: if(control_chars.encloser){
1.297 moko 495: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 496: enclose( result, i.next(), control_chars.encloser );
1.297 moko 497: if(i.has_next())
1.319 moko 498: result<<control_chars.separator;
1.297 moko 499: }
500: } else {
501: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
502: result<<i.next()->cstr();
503: if(i.has_next())
1.319 moko 504: result<<control_chars.separator;
1.297 moko 505: }
506: }
507: } else { // nameless table [we were asked to output column names]
508: if(int lsize=table.count()?table[0]->count():0)
509: for(int column=0; column<lsize; column++) {
1.319 moko 510: if(control_chars.encloser) {
511: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 512: } else {
513: result<<column;
514: }
515: if(column<lsize-1){
1.319 moko 516: result<<control_chars.separator;
1.297 moko 517: }
518: }
519: else
520: result<<"empty nameless table";
521: }
522: result<<'\n';
523: }
1.188 paf 524:
1.297 moko 525: // process data lines
526: Array_iterator<ArrayString*> i(table);
1.319 moko 527: if(control_chars.encloser){
1.297 moko 528: while(i.has_next()) {
529: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 530: enclose( result, c.next(), control_chars.encloser );
1.297 moko 531: if(c.has_next())
1.319 moko 532: result<<control_chars.separator;
1.297 moko 533: }
534: result<<'\n';
535: }
536: } else {
537: while(i.has_next()) {
538: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
539: result<<c.next()->cstr();
540: if(c.has_next())
1.319 moko 541: result<<control_chars.separator;
1.297 moko 542: }
543: result<<'\n';
544: }
545: }
1.188 paf 546: }
547:
1.241 misha 548: #else
549:
1.298 moko 550: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 551: if(from){
1.257 misha 552: to<<*sencloser;
1.224 misha 553: // while we have 'encloser'...
554: size_t pos_after=0;
1.297 moko 555: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 556: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 557: to<<from->mid(pos_after, pos_before);
1.257 misha 558: to<<*sencloser; // doubling encloser
1.224 misha 559: }
560: // last piece
1.297 moko 561: size_t from_length=from->length();
1.224 misha 562: if(pos_after<from_length)
1.297 moko 563: to<<from->mid(pos_after, from_length);
1.257 misha 564: to<<*sencloser;
1.297 moko 565: } else {
566: to<<*sencloser<<*sencloser;
567: }
1.224 misha 568: }
569:
1.319 moko 570: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 571: if(output_column_names) {
572: if(table.columns()) { // named table
1.319 moko 573: if(control_chars.encloser) {
1.297 moko 574: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 575: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 576: if(i.has_next())
1.319 moko 577: result<<*control_chars.sseparator;
1.297 moko 578: }
579: } else {
580: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
581: result<<*i.next();
582: if(i.has_next())
1.319 moko 583: result<<*control_chars.sseparator;
1.297 moko 584: }
585: }
586: } else { // nameless table [we were asked to output column names]
587: if(int lsize=table.count()?table[0]->count():0)
588: for(int column=0; column<lsize; column++) {
1.319 moko 589: if(control_chars.encloser) {
590: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 591: } else {
592: result<<String::Body::Format(column);
593: }
594: if(column<lsize-1){
1.319 moko 595: result<<*control_chars.sseparator;
1.298 moko 596: }
1.297 moko 597: }
598: else
599: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
600: }
601: result.append_know_length("\n", 1, String::L_CLEAN);
602: }
603:
604: // data lines
605: Array_iterator<ArrayString*> i(table);
1.319 moko 606: if(control_chars.encloser){
1.297 moko 607: while(i.has_next()) {
608: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 609: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 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: } else {
616: while(i.has_next()) {
617: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
618: result<<*c.next();
619: if(c.has_next())
1.319 moko 620: result<<*control_chars.sseparator;
1.297 moko 621: }
622: result.append_know_length("\n", 1, String::L_CLEAN);
623: }
624: }
625: }
1.257 misha 626: #endif // don't use stringstream
1.241 misha 627:
1.297 moko 628:
1.241 misha 629: static void _save(Request& r, MethodParams& params) {
1.237 misha 630: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 631: size_t param_index=1;
632:
633: bool do_append=false;
634: bool output_column_names=true;
635:
636: // mode?
637: if(first_arg=="append")
638: do_append=true;
639: else if(first_arg=="nameless")
640: output_column_names=false;
641: else
642: --param_index;
643:
1.232 misha 644: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 645: String file_spec=r.absolute(file_name);
646:
647: if(do_append && file_exist(file_spec))
648: output_column_names=false;
1.188 paf 649:
1.319 moko 650: TableControlChars control_chars;
1.281 misha 651: if(param_index<params.count())
1.288 misha 652: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 653: int valid_options=control_chars.load(*options);
1.281 misha 654: if(valid_options!=options->count())
655: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 656: }
1.281 misha 657:
1.188 paf 658: if(param_index<params.count())
1.318 moko 659: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 660:
1.182 paf 661: Table& table=GET_SELF(r, VTable).table();
1.31 paf 662:
1.297 moko 663: #ifdef USE_STRINGSTREAM
1.269 misha 664: pa_stringstream ost(std::stringstream::out);
1.257 misha 665:
1.319 moko 666: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 667:
668: // write
1.269 misha 669: pa_string data=ost.str();
1.257 misha 670: const char* data_cstr=data.c_str();
1.267 misha 671: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 672: #else
1.257 misha 673: String sdata;
1.224 misha 674:
1.319 moko 675: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 676:
677: // write
1.257 misha 678: const char* data_cstr=sdata.cstr();
1.297 moko 679: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 680: if(*data_cstr) // not empty (when empty it's not heap memory)
681: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 682: #endif
683: }
684:
685: static void _csv_string(Request& r, MethodParams& params) {
686: bool output_column_names=true;
687: size_t param_index=0;
688: if(params.count()>0 && params[0].is_string()) {
689: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
690: output_column_names=false;
691: param_index++;
692: } else {
1.318 moko 693: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 694: }
1.224 misha 695: }
1.240 misha 696:
1.319 moko 697: TableControlChars control_chars;
1.297 moko 698: if(param_index<params.count())
699: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 700: int valid_options=control_chars.load(*options);
1.297 moko 701: if(valid_options!=options->count())
702: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
703: }
704:
705: Table& table=GET_SELF(r, VTable).table();
706:
707: #ifdef USE_STRINGSTREAM
708: pa_stringstream ost(std::stringstream::out);
709:
1.319 moko 710: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 711:
712: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
713: #else
714: String sdata;
715:
1.319 moko 716: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 717:
718: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
719: #endif
1.224 misha 720: }
721:
1.280 misha 722: static void _count(Request& r, MethodParams& params) {
723: Table& table=GET_SELF(r, VTable).table();
724: size_t result=0;
725: if(params.count()) {
726: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
727: if(param == "columns")
1.310 moko 728: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 729: else if(param == "cells")
730: result = table.count() ? table[table.current()]->count() : 0;
731: else if(param == "rows") // synonim for ^table.count[]
732: result = table.count();
733: else
734: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
735: } else
736: result = table.count();
737:
1.182 paf 738: r.write_no_lang(*new VInt(result));
1.6 paf 739: }
740:
1.182 paf 741: static void _line(Request& r, MethodParams&) {
742: int result=1+GET_SELF(r, VTable).table().current();
743: r.write_no_lang(*new VInt(result));
1.6 paf 744: }
745:
1.182 paf 746: static void _offset(Request& r, MethodParams& params) {
747: Table& table=GET_SELF(r, VTable).table();
748: if(params.count()) {
1.133 paf 749: bool absolute=false;
1.182 paf 750: if(params.count()>1) {
751: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 752: if(whence=="cur")
1.134 paf 753: absolute=false;
1.133 paf 754: else if(whence=="set")
1.134 paf 755: absolute=true;
1.133 paf 756: else
1.318 moko 757: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 758: }
1.133 paf 759:
1.211 paf 760: int offset=params.as_int(params.count()-1, "offset must be expression", r);
761: table.offset(absolute, offset);
1.151 paf 762: } else
1.182 paf 763: r.write_no_lang(*new VInt(table.current()));
1.6 paf 764: }
765:
1.182 paf 766: static void _menu(Request& r, MethodParams& params) {
1.263 misha 767: InCycle temp(r);
1.221 paf 768:
1.182 paf 769: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 770:
1.182 paf 771: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 772:
1.182 paf 773: Table& table=GET_SELF(r, VTable).table();
1.293 misha 774: size_t saved_current=table.current();
1.7 paf 775:
1.251 misha 776: if(delim_maybe_code) { // delimiter set
1.250 misha 777: bool need_delim=false;
1.316 moko 778: for(size_t row=0; row<table.count(); row++) {
1.250 misha 779: table.set_current(row);
780:
781: StringOrValue sv_processed=r.process(body_code);
782: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
783:
784: const String* s_processed=sv_processed.get_string();
1.251 misha 785: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 786: if(need_delim) // need delim & iteration produced string?
787: r.write_pass_lang(r.process(*delim_maybe_code));
788: else
789: need_delim=true;
790: }
791:
792: r.write_pass_lang(sv_processed);
1.242 misha 793:
1.250 misha 794: if(lskip==Request::SKIP_BREAK)
795: break;
796: }
797: } else {
1.316 moko 798: for(size_t row=0; row<table.count(); row++) {
1.250 misha 799: table.set_current(row);
800:
801: r.process_write(body_code);
802: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
803:
804: if(lskip==Request::SKIP_BREAK)
805: break;
1.7 paf 806: }
807: }
1.99 parser 808: table.set_current(saved_current);
1.7 paf 809: }
810:
1.110 parser 811: #ifndef DOXYGEN
1.74 paf 812: struct Row_info {
1.166 paf 813: Request *r;
1.74 paf 814: Table *table;
1.182 paf 815: Value* key_code;
816: size_t key_field;
817: Array<int>* value_fields;
1.315 moko 818: Value* value_code;
1.182 paf 819: HashStringValue* hash;
1.174 paf 820: Table2hash_distint distinct;
1.182 paf 821: size_t row;
1.227 misha 822: Table2hash_value_type value_type;
1.74 paf 823: };
1.110 parser 824: #endif
1.182 paf 825: static void table_row_to_hash(Table::element_type row, Row_info *info) {
826: const String* key;
827: if(info->key_code) {
828: info->table->set_current(info->row++); // change context row
829: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 830: key=&sv_processed.as_string();
1.227 misha 831: } else {
1.182 paf 832: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 833: }
1.166 paf 834:
835: if(!key)
836: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 837:
1.243 misha 838: bool exist=false;
839: switch(info->value_type) {
840: case C_STRING: {
1.317 moko 841: if(info->value_fields->count()){
842: size_t index=info->value_fields->get(0);
843: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
844: } else {
845: exist=info->hash->put_dont_replace(*key, VString::empty());
846: }
1.243 misha 847: break;
1.227 misha 848: }
1.243 misha 849: case C_HASH: {
1.182 paf 850: VHash* vhash=new VHash;
851: HashStringValue& hash=vhash->hash();
852: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
853: size_t value_field=i.next();
854: if(value_field<row->count())
1.314 moko 855: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 856: }
857:
1.227 misha 858: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 859: break;
1.174 paf 860: }
1.243 misha 861: case C_TABLE: {
862: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 863: Table* table;
1.227 misha 864: if(vtable) {
1.243 misha 865: if(info->distinct==D_ILLEGAL) {
866: exist=true;
867: break;
868: }
1.174 paf 869: table=vtable->get_table();
1.227 misha 870: } else {
1.174 paf 871: // no? creating table of same structure as source
1.179 paf 872: Table::Action_options table_options(0, 0);
1.182 paf 873: table=new Table(*info->table, table_options/*no rows, just structure*/);
874: info->hash->put(*key, new VTable(table));
1.174 paf 875: }
1.308 moko 876: Table::element_type row_copy(new ArrayString(row->count()));
877: row_copy->append(*row);
878: *table+=row_copy;
1.243 misha 879: break;
1.174 paf 880: }
1.315 moko 881: case C_CODE: {
882: if(!info->key_code)
883: info->table->set_current(info->row++); // change context row
884: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code).as_value());
885: break;
886: }
1.74 paf 887: }
1.227 misha 888: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 889: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 890: }
1.235 misha 891:
892: Table2hash_value_type get_value_type(Value& vvalue_type){
893: if(vvalue_type.is_string()) {
894: const String& svalue_type=*vvalue_type.get_string();
895: if(svalue_type == "table"){
896: return C_TABLE;
897: } else if (svalue_type == "string") {
898: return C_STRING;
899: } else if (svalue_type == "hash") {
900: return C_HASH;
901: } else {
1.314 moko 902: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 903: }
904: } else {
1.314 moko 905: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 906: }
907: }
908:
1.315 moko 909: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
910: if(vdistinct.is_string()) {
911: const String& sdistinct=*vdistinct.get_string();
912: if(sdistinct!="tables")
913: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
914: value_type=C_TABLE;
915: return D_FIRST;
916: }
917: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
918: }
919:
1.182 paf 920: static void _hash(Request& r, MethodParams& params) {
921: Table& self_table=GET_SELF(r, VTable).table();
922: VHash& result=*new VHash;
1.238 misha 923: if(Table::columns_type columns=self_table.columns()){
1.182 paf 924: if(columns->count()>0) {
1.174 paf 925: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 926: Table2hash_value_type value_type=C_HASH;
1.182 paf 927: int param_index=params.count()-1;
1.166 paf 928: if(param_index>0) {
1.315 moko 929:
930: if(params[1].get_junction())
931: value_type=C_CODE;
932:
933: if(HashStringValue* options=params[param_index].get_hash()){ // can't use .as_hash because the 2nd param could be table so .as_hash throws an error
1.166 paf 934: --param_index;
935: int valid_options=0;
1.238 misha 936: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 937: valid_options++;
1.315 moko 938: distinct=get_distinct(r.process_to_value(*vdistinct_code), value_type);
1.166 paf 939: }
1.238 misha 940: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
941: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 942: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 943: if(value_type==C_CODE)
944: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 945: valid_options++;
946: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
947: }
1.226 misha 948:
1.182 paf 949: if(valid_options!=options->count())
1.272 misha 950: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 951: }
952: }
1.238 misha 953:
1.315 moko 954: if(param_index==2) // options were specified but not as hash
1.289 misha 955: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
956:
1.182 paf 957: Array<int> value_fields;
1.315 moko 958: Value* value_code=0;
959:
1.238 misha 960: if(param_index==0){ // list of columns wasn't specified
961: if(value_type==C_STRING) // $.type[string]
1.314 moko 962: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 963:
964: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
965: value_fields+=i;
966:
1.315 moko 967: } else { // list of columns or code was specified
1.227 misha 968: if(value_type==C_TABLE)
1.314 moko 969: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 970:
1.315 moko 971: Value& value_fields_param=params[1];
1.317 moko 972: if(value_fields_param.get_junction()){ // code specified
1.315 moko 973: value_code=&value_fields_param;
974: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 975: const String &field_name=*value_fields_param.get_string();
976: if(!field_name.is_empty())
977: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 978: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
979: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
980: const String& value_field_name =*i.next()->get(0);
981: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 982: }
983: } else
1.315 moko 984: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 985: }
1.74 paf 986:
1.227 misha 987: if(value_type==C_STRING && value_fields.count()!=1)
1.314 moko 988: throw Exception(PARSER_RUNTIME, 0, "you can specify only one value field with option $.type[string]");
1.182 paf 989:
990: {
991: Value* key_param=¶ms[0];
1.193 paf 992: Row_info info={
993: &r,
994: &self_table,
1.315 moko 995: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 996: /*key_field=*/0/*filled below*/,
1.193 paf 997: &value_fields,
1.315 moko 998: value_code,
1.193 paf 999: &result.hash(),
1000: distinct,
1.227 misha 1001: /*row=*/0,
1002: value_type
1.193 paf 1003: };
1.314 moko 1004: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 1005:
1006: int saved_current=self_table.current();
1007: self_table.for_each(table_row_to_hash, &info);
1008: self_table.set_current(saved_current);
1.207 paf 1009:
1010: result.extract_default();
1.182 paf 1011: }
1.74 paf 1012: }
1.238 misha 1013: }
1.97 parser 1014: r.write_no_lang(result);
1.74 paf 1015: }
1016:
1.110 parser 1017: #ifndef DOXYGEN
1.78 paf 1018: struct Table_seq_item {
1.182 paf 1019: ArrayString* row;
1.34 paf 1020: union {
1.182 paf 1021: const char *c_str;
1.34 paf 1022: double d;
1023: } value;
1.32 paf 1024: };
1.110 parser 1025: #endif
1.34 paf 1026: static int sort_cmp_string(const void *a, const void *b) {
1027: return strcmp(
1.78 paf 1028: static_cast<const Table_seq_item *>(a)->value.c_str,
1029: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1030: );
1031: }
1032: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1033: double va=static_cast<const Table_seq_item *>(a)->value.d;
1034: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1035: if(va<vb)
1036: return -1;
1037: else if(va>vb)
1038: return +1;
1039: else
1040: return 0;
1041: }
1.182 paf 1042: static void _sort(Request& r, MethodParams& params) {
1043: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1044:
1.182 paf 1045: bool reverse=params.count()>1/*..[desc|asc|]*/?
1046: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 1047: false; // default=asc
1.32 paf 1048:
1.182 paf 1049: Table& old_table=GET_SELF(r, VTable).table();
1050: Table& new_table=*new Table(old_table.columns());
1.34 paf 1051:
1.182 paf 1052: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 1053: int i;
1054:
1055: // calculate key values
1056: bool key_values_are_strings=true;
1.182 paf 1057: int old_count=old_table.count();
1058: for(i=0; i<old_count; i++) {
1.101 parser 1059: old_table.set_current(i);
1.32 paf 1060: // calculate key value
1.182 paf 1061: seq[i].row=old_table[i];
1.287 moko 1062: Value& value=r.process_to_value(key_maker);
1.34 paf 1063: if(i==0) // determining key values type by first one
1064: key_values_are_strings=value.is_string();
1065:
1066: if(key_values_are_strings)
1067: seq[i].value.c_str=value.as_string().cstr();
1068: else
1.287 moko 1069: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1070: }
1.265 misha 1071:
1072: // @todo: handle this elsewhere
1073: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1074: for(i=0; i<old_count; i++)
1075: if(*seq[i].value.c_str)
1076: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
1077: }
1078:
1.266 misha 1079: // sort keys
1.295 moko 1080: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1081:
1.34 paf 1082: // reorder table as they require in 'seq'
1.182 paf 1083: for(i=0; i<old_count; i++)
1084: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1085:
1086: delete[] seq;
1.32 paf 1087:
1.116 parser 1088: // replace any previous table value
1.182 paf 1089: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1090: }
1091:
1.176 paf 1092: #ifndef DOXYGEN
1.182 paf 1093: struct Expression_is_true_info {
1.176 paf 1094: Request* r;
1095: Value* expression_code;
1096: };
1097: #endif
1.275 misha 1098:
1.191 paf 1099: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1100: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1101: }
1.275 misha 1102:
1103: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1104: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1105: Table::Action_options o=get_action_options(r, params, 1, table);
1106: if(params.count()>2)
1107: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1108: Expression_is_true_info info={&r, &expression_code};
1109: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1110: }
1.275 misha 1111:
1112: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1113: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1114: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1115: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1116: return table.locate(name, value, o);
1117: }
1.275 misha 1118:
1.182 paf 1119: static void _locate(Request& r, MethodParams& params) {
1120: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1121:
1.291 moko 1122: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1123: _locate_expression(table, r, params) :
1124: _locate_name_value(table, r, params);
1.249 misha 1125: r.write_no_lang(VBool::get(result));
1.145 paf 1126: }
1.182 paf 1127:
1128:
1.191 paf 1129: static void _flip(Request& r, MethodParams&) {
1.182 paf 1130: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1131: Table& new_table=*new Table(0);
1.182 paf 1132: if(size_t old_count=old_table.count())
1.310 moko 1133: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1134: for(size_t column=0; column<old_cols; column++) {
1135: Table::element_type new_row(new ArrayString(old_count));
1136: for(size_t i=0; i<old_count; i++) {
1137: Table::element_type old_row=old_table[i];
1138: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1139: }
1.182 paf 1140: new_table+=new_row;
1.39 paf 1141: }
1142:
1.182 paf 1143: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1144: }
1145:
1.293 misha 1146: static void _foreach(Request& r, MethodParams& params) {
1147: InCycle temp(r);
1148:
1149: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1150: const String& value_name=params.as_string(1, "value-var name must be string");
1151:
1152: Value& body_code=params.as_junction(2, "body must be code");
1153:
1154: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1155:
1156: Table& table=GET_SELF(r, VTable).table();
1157: size_t saved_current=table.current();
1158:
1159: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1160: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1161:
1162: Value* var_context=r.get_method_frame()->caller();
1163:
1164: if(delim_maybe_code) { // delimiter set
1165: bool need_delim=false;
1.316 moko 1166: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1167: table.set_current(row);
1168:
1169: if(rownum_var_name)
1.299 moko 1170: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1171: if(value_var_name)
1.299 moko 1172: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1173:
1174: StringOrValue sv_processed=r.process(body_code);
1175: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1176:
1177: const String* s_processed=sv_processed.get_string();
1178: if(s_processed && !s_processed->is_empty()) { // we have body
1179: if(need_delim) // need delim & iteration produced string?
1180: r.write_pass_lang(r.process(*delim_maybe_code));
1181: else
1182: need_delim=true;
1183: }
1184:
1185: r.write_pass_lang(sv_processed);
1186:
1187: if(lskip==Request::SKIP_BREAK)
1188: break;
1189: }
1190: } else {
1.316 moko 1191: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1192: table.set_current(row);
1193:
1194: if(rownum_var_name)
1.300 moko 1195: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1196: if(value_var_name)
1.300 moko 1197: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1198:
1199: r.process_write(body_code);
1200: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1201:
1202: if(lskip==Request::SKIP_BREAK)
1203: break;
1204: }
1205: }
1206: table.set_current(saved_current);
1207: }
1208:
1.309 moko 1209: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1210: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1211: }
1212:
1213: inline Table::element_type row_from_string(Request& r, Value ¶m){
1214: if(!param.is_string() && !param.get_junction())
1215: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1216:
1.182 paf 1217: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.309 moko 1218: const String& string=r.process_to_string(param);
1.41 paf 1219:
1220: // parse cells
1.182 paf 1221: Table::element_type row=new ArrayString;
1.326 moko 1222: string.split(*row, 0, "\t", String::L_AS_IS);
1.41 paf 1223:
1.309 moko 1224: return row;
1.41 paf 1225: }
1226:
1.309 moko 1227: static void _append(Request& r, MethodParams& params) {
1228: VTable vtable=GET_SELF(r, VTable);
1229: Table& table=vtable.table();
1.306 moko 1230:
1.309 moko 1231: HashStringValue* hash=params[0].get_hash();
1232: if(hash){
1233: table+=new ArrayString();
1234: size_t saved_current=table.current();
1235: table.set_current(table.count()-1);
1236: hash->for_each<VTable*>(update_cell, &vtable);
1237: table.set_current(saved_current);
1238: } else {
1239: table+=row_from_string(r, params[0]);
1240: }
1241: }
1.306 moko 1242:
1.309 moko 1243: static void _insert(Request& r, MethodParams& params) {
1244: VTable vtable=GET_SELF(r, VTable);
1245: Table& table=vtable.table();
1246: HashStringValue* hash=params[0].get_hash();
1247: if(hash){
1248: table.insert(table.current(), new ArrayString());
1249: hash->for_each<VTable*>(update_cell, &vtable);
1250: } else {
1251: table.insert(table.current(), row_from_string(r, params[0]));
1252: }
1.306 moko 1253: }
1254:
1.311 moko 1255: static void _delete(Request& r, MethodParams&) {
1.307 moko 1256: Table& table=GET_SELF(r, VTable).table();
1257: table.remove_current();
1258: }
1259:
1.182 paf 1260: static void join_named_row(Table& src, Table* dest) {
1261: Table::columns_type dest_columns=dest->columns();
1262: size_t dest_columns_count=dest_columns->count();
1263: Table::element_type dest_row(new ArrayString(dest_columns_count));
1264: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1265: const String* src_item=src.item(*dest_columns->get(dest_column));
1266: *dest_row+=src_item?src_item:new String;
1267: }
1268: *dest+=dest_row;
1269: }
1270: static void join_nameless_row(Table& src, Table* dest) {
1271: *dest+=src[src.current()];
1272: }
1273: static void _join(Request& r, MethodParams& params) {
1.288 misha 1274: Table& src=*params.as_table(0, "source");
1.176 paf 1275:
1.268 misha 1276: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1277:
1.182 paf 1278: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1279: if(&src == &dest)
1.318 moko 1280: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1281:
1.193 paf 1282: if(dest.columns()) // dest is named
1.182 paf 1283: src.table_for_each(join_named_row, &dest, o);
1284: else // dest is nameless
1285: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1286: }
1287:
1.94 parser 1288: #ifndef DOXYGEN
1.169 paf 1289: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1290: ArrayString& columns;
1.218 paf 1291: int columns_count;
1.182 paf 1292: ArrayString* row;
1.94 parser 1293: public:
1.182 paf 1294: Table* table;
1295: public:
1296: Table_sql_event_handlers() :
1297: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1298: }
1299:
1.279 misha 1300: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1301: try {
1.274 moko 1302: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1303: return false;
1304: } catch(...) {
1305: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1306: return true;
1307: }
1308: }
1309: bool before_rows(SQL_Error& error) {
1310: try {
1.182 paf 1311: table=new Table(&columns);
1.218 paf 1312: columns_count=columns.count();
1.170 paf 1313: return false;
1314: } catch(...) {
1315: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1316: return true;
1317: }
1318: }
1319: bool add_row(SQL_Error& error) {
1320: try {
1.218 paf 1321: *table+=row=new ArrayString(columns_count);
1.170 paf 1322: return false;
1323: } catch(...) {
1324: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1325: return true;
1326: }
1327: }
1.279 misha 1328: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1329: try {
1.292 misha 1330: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1331: return false;
1332: } catch(...) {
1333: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1334: return true;
1335: }
1.94 parser 1336: }
1337: };
1338: #endif
1.204 paf 1339:
1340: static void marshal_bind(
1341: HashStringValue::key_type aname,
1342: HashStringValue::value_type avalue,
1343: SQL_Driver::Placeholder** pptr)
1344: {
1345: SQL_Driver::Placeholder& ph=**pptr;
1346: ph.name=aname.cstr();
1.261 misha 1347: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1348: ph.is_null=avalue->get_class()==void_class;
1349: ph.were_updated=false;
1350:
1351: (*pptr)++;
1352: }
1353:
1354: // not static, used elsewhere
1355: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1356: int hash_count=hash.count();
1.302 moko 1357: placeholders=new SQL_Driver::Placeholder[hash_count];
1.204 paf 1358: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1359: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1360: return hash_count;
1361: }
1362:
1363: // not static, used elsewhere
1364: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1365: SQL_Driver::Placeholder* ph=placeholders;
1366: for(int i=0; i<placeholder_count; i++, ph++)
1367: if(ph->were_updated) {
1368: Value* value;
1369: if(ph->is_null)
1.248 misha 1370: value=VVoid::get();
1.204 paf 1371: else
1.256 misha 1372: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1373: hash.put(ph->name, value);
1374: }
1375: }
1376:
1.182 paf 1377: static void _sql(Request& r, MethodParams& params) {
1378: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1379:
1.204 paf 1380: HashStringValue* bind=0;
1.244 misha 1381: ulong limit=SQL_NO_LIMIT;
1.100 parser 1382: ulong offset=0;
1.281 misha 1383: if(params.count()>1)
1.288 misha 1384: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1385: int valid_options=0;
1386: if(Value* vbind=options->get(sql_bind_name)) {
1387: valid_options++;
1388: bind=vbind->get_hash();
1389: }
1390: if(Value* vlimit=options->get(sql_limit_name)) {
1391: valid_options++;
1392: limit=(ulong)r.process_to_value(*vlimit).as_double();
1393: }
1394: if(Value* voffset=options->get(sql_offset_name)) {
1395: valid_options++;
1396: offset=(ulong)r.process_to_value(*voffset).as_double();
1397: }
1398: if(valid_options!=options->count())
1399: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1400: }
1.49 paf 1401:
1.204 paf 1402: SQL_Driver::Placeholder* placeholders=0;
1403: uint placeholders_count=0;
1404: if(bind)
1405: placeholders_count=marshal_binds(*bind, placeholders);
1406:
1.182 paf 1407: Temp_lang temp_lang(r, String::L_SQL);
1408: const String& statement_string=r.process_to_string(statement);
1.262 misha 1409: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1410:
1.182 paf 1411: Table_sql_event_handlers handlers;
1.294 moko 1412:
1.182 paf 1413: r.connection()->query(
1.203 paf 1414: statement_cstr,
1.208 paf 1415: placeholders_count, placeholders,
1.203 paf 1416: offset, limit,
1.160 paf 1417: handlers,
1418: statement_string);
1.135 paf 1419:
1.204 paf 1420: if(bind)
1421: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1422:
1.182 paf 1423: Table& result=
1424: handlers.table?*handlers.table: // query resulted in table? return it
1425: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1426:
1427: // replace any previous table value
1.182 paf 1428: GET_SELF(r, VTable).set_table(result);
1.49 paf 1429: }
1430:
1.233 misha 1431: static void _columns(Request& r, MethodParams& params) {
1432: const String* column_column_name;
1433: if(params.count()>0)
1434: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1435: else
1436: column_column_name=new String("column");
1.88 parser 1437:
1.182 paf 1438: Table::columns_type result_columns(new ArrayString);
1.233 misha 1439: *result_columns+=column_column_name;
1.182 paf 1440: Table& result_table=*new Table(result_columns);
1.88 parser 1441:
1.182 paf 1442: Table& source_table=GET_SELF(r, VTable).table();
1443: if(Table::columns_type source_columns=source_table.columns()) {
1444: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1445: Table::element_type result_row(new ArrayString);
1446: *result_row+=i.next();
1447: result_table+=result_row;
1.88 parser 1448: }
1449: }
1450:
1.182 paf 1451: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1452: }
1453:
1.182 paf 1454: static void _select(Request& r, MethodParams& params) {
1.231 misha 1455: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1456:
1.182 paf 1457: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1458:
1.277 moko 1459: int limit=source_table.count();
1.282 misha 1460: int offset=0;
1461: bool reverse=false;
1.278 moko 1462:
1.281 misha 1463: if(params.count()>1)
1464: if(HashStringValue* options=params.as_hash(1)) {
1465: int valid_options=0;
1466: if(Value* vlimit=options->get(sql_limit_name)) {
1467: valid_options++;
1468: limit=r.process_to_value(*vlimit).as_int();
1469: }
1470: if(Value* voffset=options->get(sql_offset_name)) {
1471: valid_options++;
1472: offset=r.process_to_value(*voffset).as_int();
1473: }
1474: if(Value* vreverse=options->get(table_reverse_name)) {
1475: valid_options++;
1476: reverse=r.process_to_value(*vreverse).as_bool();
1477: }
1478: if(valid_options!=options->count())
1.288 misha 1479: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1480: }
1481:
1482: Table& result_table=*new Table(source_table.columns());
1.277 moko 1483:
1.283 misha 1484: size_t size=source_table.count();
1485: if(offset<0)
1486: offset+=size;
1.284 misha 1487: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1488: size_t saved_current=source_table.current();
1489: size_t appended=0;
1490:
1491: if(reverse){
1492: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1493: source_table.set_current(row);
1494:
1495: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1496:
1497: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1498: result_table+=source_table[row];
1499: if(row==0) break;
1500: }
1501: } else {
1502: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1503: source_table.set_current(row);
1.148 paf 1504:
1.282 misha 1505: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1506:
1.282 misha 1507: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1508: result_table+=source_table[row];
1509: }
1.277 moko 1510: }
1.282 misha 1511: source_table.set_current(saved_current);
1.148 paf 1512: }
1513:
1.182 paf 1514: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1515: }
1516:
1.66 paf 1517: // constructor
1518:
1.182 paf 1519: MTable::MTable(): Methoded("table") {
1.142 paf 1520: // ^table::create{data}
1521: // ^table::create[nameless]{data}
1522: // ^table::create[table]
1.236 misha 1523: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1524: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1525: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1526:
1.142 paf 1527: // ^table::load[file]
1528: // ^table::load[nameless;file]
1.168 paf 1529: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1530:
1531: // ^table.save[file]
1532: // ^table.save[nameless;file]
1.188 paf 1533: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1534:
1.224 misha 1535: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1536:
1.297 moko 1537: // ^table.csv-string[]
1538: // ^table.csv-string[nameless]
1539: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1540: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1541:
1.6 paf 1542: // ^table.count[]
1.280 misha 1543: // ^table.count[rows]
1544: // ^table.count[columns]
1545: // ^table.count[cells]
1546: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1547:
1548: // ^table.line[]
1.66 paf 1549: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1550:
1.10 paf 1551: // ^table.offset[]
1.133 paf 1552: // ^table.offset(offset)
1553: // ^table.offset[cur|set](offset)
1554: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1555:
1.10 paf 1556: // ^table.menu{code}
1557: // ^table.menu{code}[delim]
1.66 paf 1558: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1559:
1.239 misha 1560: // ^table.hash[key field name]
1561: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1562: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1563:
1.102 parser 1564: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1565: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1566: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1567:
1.36 paf 1568: // ^table.locate[field;value]
1.176 paf 1569: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1570:
1571: // ^table.flip[]
1.66 paf 1572: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1573:
1.293 misha 1574: // ^table.foreach[row-num;value]{code}
1575: // ^table.foreach[row-num;value]{code}[delim]
1576: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1577:
1.306 moko 1578: // ^table.append{row{tab}data}
1.66 paf 1579: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1580:
1.306 moko 1581: // ^table.insert{row{tab}data} before current row
1582: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1583:
1.307 moko 1584: // ^table.delete[] current row
1585: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1586:
1.157 paf 1587: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1588: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1589:
1590:
1.239 misha 1591: // ^table::sql[query]
1592: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1593: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1594:
1.239 misha 1595: // ^table.columns[[column name]]
1.233 misha 1596: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1597:
1598: // ^table.select(expression) = table
1.277 moko 1599: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1600: }
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