Annotation of parser3/src/classes/table.C, revision 1.324
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:
1.324 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.323 2016/09/08 17:01:49 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 {
1.236 misha 124: if(sencloser->length()!=1)
1.323 moko 125: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be one byte character");
1.236 misha 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) {
174: while(char* v=strpbrk(pos, delims)) {
175: if(helper.check_lang(v)){
176: result.delim=*v;
177: *v=0;
178: result.piece=helper.extract(*string_ref);
179: *string_ref=v+1;
180: return result;
181: }
182: pos=v+1;
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) {
199: if(char* v=strchr(pos, encloser)){
200: if(helper.check_lang(v)){
201: *(v++)=0;
202: result.append(helper.extract(*string_ref));
203: if(*v==encloser && helper.check_lang(v)){ // double-encloser stands for encloser
204: *string_ref=v+1;
205: } else {
206: *string_ref=pos=v;
207: break;
208: }
209: }
210: pos=v+1;
211: }{
212: result.append(helper.extract(*string_ref));
213: *string_ref=0;
214: return result;
215: }
216: }
217:
218: // we are no longer enclosed, searching for delimiter
219: while(char* v=strpbrk(pos, delims)) {
220: if(helper.check_lang(v)){
221: result.delim=*v;
222: if(v>*string_ref){
223: *v=0;
224: result.append(helper.extract(*string_ref));
225: }
226: *string_ref=v+1;
227: return result;
228: }
229: pos=v+1;
230: }
231: result.append(helper.extract(*string_ref));
232: *string_ref=0;
233: } else
234: return lsplit(string_ref, delims, helper);
235: }
236: return result;
237: }
238:
239: static void skip_clean_empty_lines(char** data_ref, StringSplitHelper& helper) {
240: if(*data_ref) {
241: while(**data_ref == '\n' && helper.check_lang(*data_ref))
242: (*data_ref)++;
243: }
244: }
245:
1.182 paf 246: static void _create(Request& r, MethodParams& params) {
1.157 paf 247: // clone/copy part?
1.182 paf 248: if(Table *source=params[0].get_table()) {
1.268 misha 249: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 250: if(params.count()>2)
251: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 252: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 253: return;
254: }
1.142 paf 255:
1.236 misha 256: size_t data_param_index=0;
257: bool nameless=false;
258:
259: if(params.count()>1) {
260: if(params[0].is_string()){ // can be nameless only
261: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
262: if(snameless!="nameless")
1.318 moko 263: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 264: nameless=true;
265: data_param_index++;
266: }
267: }
268:
269: HashStringValue *options=0;
1.319 moko 270: TableControlChars control_chars;
1.236 misha 271:
272: size_t options_param_index=data_param_index+1;
1.322 moko 273: if( options_param_index<params.count() && (options=params.as_hash(options_param_index)) ) {
1.324 ! moko 274: if(control_chars.load(*options)!=options->count())
! 275: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.236 misha 276: }
277:
278: // data
1.182 paf 279: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.322 moko 280: StringSplitHelper sdata(r.process_to_string(params.as_junction(data_param_index, "body must be table or code")));
281: char *data=sdata.base;
1.44 paf 282:
283: // parse columns
1.182 paf 284: Table::columns_type columns;
1.322 moko 285: if(nameless) {
286: columns=0; // nameless
1.21 paf 287: } else {
1.322 moko 288: columns=new ArrayString;
289: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
290: *columns+=sr.piece;
291: if(sr.delim=='\n')
292: break;
1.182 paf 293: }
1.44 paf 294: }
1.322 moko 295:
296: Table& table=*new Table(columns);
297: int columns_count=columns ? columns->count(): 0;
1.44 paf 298:
299: // parse cells
1.322 moko 300: Table::element_type row(new ArrayString(columns_count));
301: skip_clean_empty_lines(&data, sdata);
302: while( lsplit_sresult sr=lsplit(&data, control_chars.separators, control_chars.encloser, sdata) ) {
303: if(sr.piece->is_empty() && !sr.delim && !row->count()) // append last empty column [if without \n]
304: break;
305: *row+=sr.piece;
306: if(sr.delim=='\n') {
307: table+=row;
308: row=new ArrayString(columns_count);
309: skip_clean_empty_lines(&data, sdata);
310: }
311: }
312: // last line [if without \n]
313: if(row->count())
1.182 paf 314: table+=row;
1.322 moko 315:
1.44 paf 316: // replace any previous table value
1.182 paf 317: GET_SELF(r, VTable).set_table(table);
1.44 paf 318: }
319:
1.187 paf 320: struct lsplit_result {
321: char* piece;
322: char delim;
323:
1.321 moko 324: lsplit_result(char *apiece=0) : piece(apiece), delim(0){}
1.187 paf 325: operator bool() { return piece!=0; }
326: };
327:
1.321 moko 328: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
329: lsplit_result result(*string_ref);
330: if(result.piece) {
331: if(char* v=strpbrk(result.piece, delims)) {
1.187 paf 332: result.delim=*v;
333: *v=0;
1.321 moko 334: *string_ref=v+1;
1.187 paf 335: return result;
336: }
1.322 moko 337: *string_ref=0;
1.273 misha 338: }
339: return result;
1.187 paf 340: }
341:
1.320 moko 342: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.321 moko 343: lsplit_result result(*string_ref);
1.187 paf 344:
1.321 moko 345: if(result.piece) {
346: if(encloser && *result.piece==encloser) {
347: result.piece++;
1.187 paf 348:
1.321 moko 349: char c;
1.187 paf 350: char *read;
351: char *write;
1.321 moko 352: write=read=result.piece;
353:
1.290 moko 354: // we are enclosed, searching for second encloser
355: while(c=*read++) {
1.187 paf 356: if(c==encloser) {
1.290 moko 357: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 358: read++;
1.290 moko 359: else
360: break; // note: skipping encloser
1.187 paf 361: }
362: *write++=c;
363: }
1.321 moko 364:
1.290 moko 365: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
366: while(c=*read++) {
1.320 moko 367: if(c==delims[0] || c==delims[1]) {
1.290 moko 368: result.delim=c;
369: break;
370: } else if(c!=encloser)
371: *write++=c;
372: }
1.321 moko 373:
1.187 paf 374: *write=0; // terminate
1.321 moko 375: *string_ref=c ? read : 0;
1.187 paf 376: return result;
377: } else
1.320 moko 378: return lsplit(string_ref, delims);
1.273 misha 379: }
380: return result;
1.187 paf 381: }
382:
383: static void skip_empty_and_comment_lines( char** data_ref ) {
1.322 moko 384: while(*data_ref) {
385: if(**data_ref == '\n'){
386: (*data_ref)++;
387: } else {
388: if(**data_ref == '#' )
389: /*nowhere=*/getrow(data_ref);
390: else
391: break;
1.187 paf 392: }
393: }
394: }
395:
1.273 misha 396: static void skip_empty_lines( char** data_ref ) {
1.322 moko 397: if(*data_ref) {
398: while(**data_ref == '\n')
399: (*data_ref)++;
1.273 misha 400: }
401: }
402:
403: typedef void (*Skip_lines_action)(char** data_ref);
404:
1.182 paf 405: static void _load(Request& r, MethodParams& params) {
1.232 misha 406: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 407: int filename_param_index=0;
408: bool nameless=first_param=="nameless";
409: if(nameless)
410: filename_param_index++;
1.182 paf 411: size_t options_param_index=filename_param_index+1;
1.186 paf 412:
413: HashStringValue *options=0;
1.319 moko 414: TableControlChars control_chars;
1.186 paf 415: if(options_param_index<params.count()
1.288 misha 416: && (options=params.as_hash(options_param_index))) {
1.186 paf 417: // cloning, so that we could change [to simplify checks on params inside file_read_text
418: options=new HashStringValue(*options);
1.319 moko 419: control_chars.load(*options);
1.186 paf 420: }
421:
1.44 paf 422: // loading text
1.321 moko 423: char *data=file_load_text(r, r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)), true, options);
1.44 paf 424:
1.319 moko 425: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 426:
1.1 paf 427: // parse columns
1.182 paf 428: Table::columns_type columns;
1.168 paf 429: if(nameless) {
1.322 moko 430: columns=0; // nameless
1.1 paf 431: } else {
1.322 moko 432: columns=new ArrayString;
1.1 paf 433:
1.273 misha 434: skip_lines_action(&data);
1.320 moko 435: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 436: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 437: if(sr.delim=='\n')
438: break;
1.139 paf 439: }
1.1 paf 440: }
1.187 paf 441:
442: Table& table=*new Table(columns);
1.322 moko 443: int columns_count=columns ? columns->count(): 0;
1.1 paf 444:
445: // parse cells
1.218 paf 446: Table::element_type row(new ArrayString(columns_count));
1.273 misha 447: skip_lines_action(&data);
1.320 moko 448: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 449: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
450: break;
1.256 misha 451: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 452: if(sr.delim=='\n') {
453: table+=row;
1.218 paf 454: row=new ArrayString(columns_count);
1.273 misha 455: skip_lines_action(&data);
1.1 paf 456: }
1.187 paf 457: }
458: // last line [if without \n]
459: if(row->count())
1.1 paf 460: table+=row;
1.187 paf 461:
1.1 paf 462: // replace any previous table value
1.182 paf 463: GET_SELF(r, VTable).set_table(table);
1.1 paf 464: }
1.2 paf 465:
1.297 moko 466: #ifdef USE_STRINGSTREAM
1.269 misha 467: #include "gc_allocator.h"
468:
469: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
470: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
471:
1.298 moko 472: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 473: if(from){
1.257 misha 474: to<<encloser;
1.188 paf 475: // while we have 'encloser'...
1.189 paf 476: size_t pos_after=0;
1.297 moko 477: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 478: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 479: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 480: to<<encloser; // doubling encloser
1.188 paf 481: }
482: // last piece
1.297 moko 483: size_t from_length=from->length();
1.188 paf 484: if(pos_after<from_length)
1.297 moko 485: to<<from->mid(pos_after, from_length).cstr();
486: to<<encloser;
487: } else {
488: to<<encloser<<encloser;
489: }
490: }
491:
1.319 moko 492: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 493: if(output_column_names) {
494: if(table.columns()) { // named table
1.319 moko 495: if(control_chars.encloser){
1.297 moko 496: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 497: enclose( result, i.next(), control_chars.encloser );
1.297 moko 498: if(i.has_next())
1.319 moko 499: result<<control_chars.separator;
1.297 moko 500: }
501: } else {
502: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
503: result<<i.next()->cstr();
504: if(i.has_next())
1.319 moko 505: result<<control_chars.separator;
1.297 moko 506: }
507: }
508: } else { // nameless table [we were asked to output column names]
509: if(int lsize=table.count()?table[0]->count():0)
510: for(int column=0; column<lsize; column++) {
1.319 moko 511: if(control_chars.encloser) {
512: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 513: } else {
514: result<<column;
515: }
516: if(column<lsize-1){
1.319 moko 517: result<<control_chars.separator;
1.297 moko 518: }
519: }
520: else
521: result<<"empty nameless table";
522: }
523: result<<'\n';
524: }
1.188 paf 525:
1.297 moko 526: // process data lines
527: Array_iterator<ArrayString*> i(table);
1.319 moko 528: if(control_chars.encloser){
1.297 moko 529: while(i.has_next()) {
530: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 531: enclose( result, c.next(), control_chars.encloser );
1.297 moko 532: if(c.has_next())
1.319 moko 533: result<<control_chars.separator;
1.297 moko 534: }
535: result<<'\n';
536: }
537: } else {
538: while(i.has_next()) {
539: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
540: result<<c.next()->cstr();
541: if(c.has_next())
1.319 moko 542: result<<control_chars.separator;
1.297 moko 543: }
544: result<<'\n';
545: }
546: }
1.188 paf 547: }
548:
1.241 misha 549: #else
550:
1.298 moko 551: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 552: if(from){
1.257 misha 553: to<<*sencloser;
1.224 misha 554: // while we have 'encloser'...
555: size_t pos_after=0;
1.297 moko 556: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 557: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 558: to<<from->mid(pos_after, pos_before);
1.257 misha 559: to<<*sencloser; // doubling encloser
1.224 misha 560: }
561: // last piece
1.297 moko 562: size_t from_length=from->length();
1.224 misha 563: if(pos_after<from_length)
1.297 moko 564: to<<from->mid(pos_after, from_length);
1.257 misha 565: to<<*sencloser;
1.297 moko 566: } else {
567: to<<*sencloser<<*sencloser;
568: }
1.224 misha 569: }
570:
1.319 moko 571: static void table_to_csv(String& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 572: if(output_column_names) {
573: if(table.columns()) { // named table
1.319 moko 574: if(control_chars.encloser) {
1.297 moko 575: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 576: enclose( result, i.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 577: if(i.has_next())
1.319 moko 578: result<<*control_chars.sseparator;
1.297 moko 579: }
580: } else {
581: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
582: result<<*i.next();
583: if(i.has_next())
1.319 moko 584: result<<*control_chars.sseparator;
1.297 moko 585: }
586: }
587: } else { // nameless table [we were asked to output column names]
588: if(int lsize=table.count()?table[0]->count():0)
589: for(int column=0; column<lsize; column++) {
1.319 moko 590: if(control_chars.encloser) {
591: result<<*control_chars.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 592: } else {
593: result<<String::Body::Format(column);
594: }
595: if(column<lsize-1){
1.319 moko 596: result<<*control_chars.sseparator;
1.298 moko 597: }
1.297 moko 598: }
599: else
600: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
601: }
602: result.append_know_length("\n", 1, String::L_CLEAN);
603: }
604:
605: // data lines
606: Array_iterator<ArrayString*> i(table);
1.319 moko 607: if(control_chars.encloser){
1.297 moko 608: while(i.has_next()) {
609: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 610: enclose( result, c.next(), control_chars.encloser, control_chars.sencloser );
1.297 moko 611: if(c.has_next())
1.319 moko 612: result<<*control_chars.sseparator;
1.297 moko 613: }
614: result.append_know_length("\n", 1, String::L_CLEAN);
615: }
616: } else {
617: while(i.has_next()) {
618: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
619: result<<*c.next();
620: if(c.has_next())
1.319 moko 621: result<<*control_chars.sseparator;
1.297 moko 622: }
623: result.append_know_length("\n", 1, String::L_CLEAN);
624: }
625: }
626: }
1.257 misha 627: #endif // don't use stringstream
1.241 misha 628:
1.297 moko 629:
1.241 misha 630: static void _save(Request& r, MethodParams& params) {
1.237 misha 631: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 632: size_t param_index=1;
633:
634: bool do_append=false;
635: bool output_column_names=true;
636:
637: // mode?
638: if(first_arg=="append")
639: do_append=true;
640: else if(first_arg=="nameless")
641: output_column_names=false;
642: else
643: --param_index;
644:
1.232 misha 645: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 646: String file_spec=r.absolute(file_name);
647:
648: if(do_append && file_exist(file_spec))
649: output_column_names=false;
1.188 paf 650:
1.319 moko 651: TableControlChars control_chars;
1.281 misha 652: if(param_index<params.count())
1.288 misha 653: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 654: int valid_options=control_chars.load(*options);
1.281 misha 655: if(valid_options!=options->count())
656: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 657: }
1.281 misha 658:
1.188 paf 659: if(param_index<params.count())
1.318 moko 660: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 661:
1.182 paf 662: Table& table=GET_SELF(r, VTable).table();
1.31 paf 663:
1.297 moko 664: #ifdef USE_STRINGSTREAM
1.269 misha 665: pa_stringstream ost(std::stringstream::out);
1.257 misha 666:
1.319 moko 667: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 668:
669: // write
1.269 misha 670: pa_string data=ost.str();
1.257 misha 671: const char* data_cstr=data.c_str();
1.267 misha 672: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 673: #else
1.257 misha 674: String sdata;
1.224 misha 675:
1.319 moko 676: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 677:
678: // write
1.257 misha 679: const char* data_cstr=sdata.cstr();
1.297 moko 680: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 681: if(*data_cstr) // not empty (when empty it's not heap memory)
682: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 683: #endif
684: }
685:
686: static void _csv_string(Request& r, MethodParams& params) {
687: bool output_column_names=true;
688: size_t param_index=0;
689: if(params.count()>0 && params[0].is_string()) {
690: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
691: output_column_names=false;
692: param_index++;
693: } else {
1.318 moko 694: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 695: }
1.224 misha 696: }
1.240 misha 697:
1.319 moko 698: TableControlChars control_chars;
1.297 moko 699: if(param_index<params.count())
700: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 701: int valid_options=control_chars.load(*options);
1.297 moko 702: if(valid_options!=options->count())
703: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
704: }
705:
706: Table& table=GET_SELF(r, VTable).table();
707:
708: #ifdef USE_STRINGSTREAM
709: pa_stringstream ost(std::stringstream::out);
710:
1.319 moko 711: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 712:
713: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
714: #else
715: String sdata;
716:
1.319 moko 717: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 718:
719: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
720: #endif
1.224 misha 721: }
722:
1.280 misha 723: static void _count(Request& r, MethodParams& params) {
724: Table& table=GET_SELF(r, VTable).table();
725: size_t result=0;
726: if(params.count()) {
727: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
728: if(param == "columns")
1.310 moko 729: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 730: else if(param == "cells")
731: result = table.count() ? table[table.current()]->count() : 0;
732: else if(param == "rows") // synonim for ^table.count[]
733: result = table.count();
734: else
735: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
736: } else
737: result = table.count();
738:
1.182 paf 739: r.write_no_lang(*new VInt(result));
1.6 paf 740: }
741:
1.182 paf 742: static void _line(Request& r, MethodParams&) {
743: int result=1+GET_SELF(r, VTable).table().current();
744: r.write_no_lang(*new VInt(result));
1.6 paf 745: }
746:
1.182 paf 747: static void _offset(Request& r, MethodParams& params) {
748: Table& table=GET_SELF(r, VTable).table();
749: if(params.count()) {
1.133 paf 750: bool absolute=false;
1.182 paf 751: if(params.count()>1) {
752: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 753: if(whence=="cur")
1.134 paf 754: absolute=false;
1.133 paf 755: else if(whence=="set")
1.134 paf 756: absolute=true;
1.133 paf 757: else
1.318 moko 758: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 759: }
1.133 paf 760:
1.211 paf 761: int offset=params.as_int(params.count()-1, "offset must be expression", r);
762: table.offset(absolute, offset);
1.151 paf 763: } else
1.182 paf 764: r.write_no_lang(*new VInt(table.current()));
1.6 paf 765: }
766:
1.182 paf 767: static void _menu(Request& r, MethodParams& params) {
1.263 misha 768: InCycle temp(r);
1.221 paf 769:
1.182 paf 770: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 771:
1.182 paf 772: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 773:
1.182 paf 774: Table& table=GET_SELF(r, VTable).table();
1.293 misha 775: size_t saved_current=table.current();
1.7 paf 776:
1.251 misha 777: if(delim_maybe_code) { // delimiter set
1.250 misha 778: bool need_delim=false;
1.316 moko 779: for(size_t row=0; row<table.count(); row++) {
1.250 misha 780: table.set_current(row);
781:
782: StringOrValue sv_processed=r.process(body_code);
783: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
784:
785: const String* s_processed=sv_processed.get_string();
1.251 misha 786: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 787: if(need_delim) // need delim & iteration produced string?
788: r.write_pass_lang(r.process(*delim_maybe_code));
789: else
790: need_delim=true;
791: }
792:
793: r.write_pass_lang(sv_processed);
1.242 misha 794:
1.250 misha 795: if(lskip==Request::SKIP_BREAK)
796: break;
797: }
798: } else {
1.316 moko 799: for(size_t row=0; row<table.count(); row++) {
1.250 misha 800: table.set_current(row);
801:
802: r.process_write(body_code);
803: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
804:
805: if(lskip==Request::SKIP_BREAK)
806: break;
1.7 paf 807: }
808: }
1.99 parser 809: table.set_current(saved_current);
1.7 paf 810: }
811:
1.110 parser 812: #ifndef DOXYGEN
1.74 paf 813: struct Row_info {
1.166 paf 814: Request *r;
1.74 paf 815: Table *table;
1.182 paf 816: Value* key_code;
817: size_t key_field;
818: Array<int>* value_fields;
1.315 moko 819: Value* value_code;
1.182 paf 820: HashStringValue* hash;
1.174 paf 821: Table2hash_distint distinct;
1.182 paf 822: size_t row;
1.227 misha 823: Table2hash_value_type value_type;
1.74 paf 824: };
1.110 parser 825: #endif
1.182 paf 826: static void table_row_to_hash(Table::element_type row, Row_info *info) {
827: const String* key;
828: if(info->key_code) {
829: info->table->set_current(info->row++); // change context row
830: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 831: key=&sv_processed.as_string();
1.227 misha 832: } else {
1.182 paf 833: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 834: }
1.166 paf 835:
836: if(!key)
837: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 838:
1.243 misha 839: bool exist=false;
840: switch(info->value_type) {
841: case C_STRING: {
1.317 moko 842: if(info->value_fields->count()){
843: size_t index=info->value_fields->get(0);
844: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
845: } else {
846: exist=info->hash->put_dont_replace(*key, VString::empty());
847: }
1.243 misha 848: break;
1.227 misha 849: }
1.243 misha 850: case C_HASH: {
1.182 paf 851: VHash* vhash=new VHash;
852: HashStringValue& hash=vhash->hash();
853: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
854: size_t value_field=i.next();
855: if(value_field<row->count())
1.314 moko 856: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 857: }
858:
1.227 misha 859: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 860: break;
1.174 paf 861: }
1.243 misha 862: case C_TABLE: {
863: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 864: Table* table;
1.227 misha 865: if(vtable) {
1.243 misha 866: if(info->distinct==D_ILLEGAL) {
867: exist=true;
868: break;
869: }
1.174 paf 870: table=vtable->get_table();
1.227 misha 871: } else {
1.174 paf 872: // no? creating table of same structure as source
1.179 paf 873: Table::Action_options table_options(0, 0);
1.182 paf 874: table=new Table(*info->table, table_options/*no rows, just structure*/);
875: info->hash->put(*key, new VTable(table));
1.174 paf 876: }
1.308 moko 877: Table::element_type row_copy(new ArrayString(row->count()));
878: row_copy->append(*row);
879: *table+=row_copy;
1.243 misha 880: break;
1.174 paf 881: }
1.315 moko 882: case C_CODE: {
883: if(!info->key_code)
884: info->table->set_current(info->row++); // change context row
885: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code).as_value());
886: break;
887: }
1.74 paf 888: }
1.227 misha 889: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 890: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 891: }
1.235 misha 892:
893: Table2hash_value_type get_value_type(Value& vvalue_type){
894: if(vvalue_type.is_string()) {
895: const String& svalue_type=*vvalue_type.get_string();
896: if(svalue_type == "table"){
897: return C_TABLE;
898: } else if (svalue_type == "string") {
899: return C_STRING;
900: } else if (svalue_type == "hash") {
901: return C_HASH;
902: } else {
1.314 moko 903: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 904: }
905: } else {
1.314 moko 906: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 907: }
908: }
909:
1.315 moko 910: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
911: if(vdistinct.is_string()) {
912: const String& sdistinct=*vdistinct.get_string();
913: if(sdistinct!="tables")
914: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
915: value_type=C_TABLE;
916: return D_FIRST;
917: }
918: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
919: }
920:
1.182 paf 921: static void _hash(Request& r, MethodParams& params) {
922: Table& self_table=GET_SELF(r, VTable).table();
923: VHash& result=*new VHash;
1.238 misha 924: if(Table::columns_type columns=self_table.columns()){
1.182 paf 925: if(columns->count()>0) {
1.174 paf 926: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 927: Table2hash_value_type value_type=C_HASH;
1.182 paf 928: int param_index=params.count()-1;
1.166 paf 929: if(param_index>0) {
1.315 moko 930:
931: if(params[1].get_junction())
932: value_type=C_CODE;
933:
934: 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 935: --param_index;
936: int valid_options=0;
1.238 misha 937: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 938: valid_options++;
1.315 moko 939: distinct=get_distinct(r.process_to_value(*vdistinct_code), value_type);
1.166 paf 940: }
1.238 misha 941: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
942: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 943: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 944: if(value_type==C_CODE)
945: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 946: valid_options++;
947: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
948: }
1.226 misha 949:
1.182 paf 950: if(valid_options!=options->count())
1.272 misha 951: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 952: }
953: }
1.238 misha 954:
1.315 moko 955: if(param_index==2) // options were specified but not as hash
1.289 misha 956: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
957:
1.182 paf 958: Array<int> value_fields;
1.315 moko 959: Value* value_code=0;
960:
1.238 misha 961: if(param_index==0){ // list of columns wasn't specified
962: if(value_type==C_STRING) // $.type[string]
1.314 moko 963: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 964:
965: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
966: value_fields+=i;
967:
1.315 moko 968: } else { // list of columns or code was specified
1.227 misha 969: if(value_type==C_TABLE)
1.314 moko 970: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 971:
1.315 moko 972: Value& value_fields_param=params[1];
1.317 moko 973: if(value_fields_param.get_junction()){ // code specified
1.315 moko 974: value_code=&value_fields_param;
975: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 976: const String &field_name=*value_fields_param.get_string();
977: if(!field_name.is_empty())
978: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 979: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
980: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
981: const String& value_field_name =*i.next()->get(0);
982: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 983: }
984: } else
1.315 moko 985: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 986: }
1.74 paf 987:
1.227 misha 988: if(value_type==C_STRING && value_fields.count()!=1)
1.314 moko 989: throw Exception(PARSER_RUNTIME, 0, "you can specify only one value field with option $.type[string]");
1.182 paf 990:
991: {
992: Value* key_param=¶ms[0];
1.193 paf 993: Row_info info={
994: &r,
995: &self_table,
1.315 moko 996: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 997: /*key_field=*/0/*filled below*/,
1.193 paf 998: &value_fields,
1.315 moko 999: value_code,
1.193 paf 1000: &result.hash(),
1001: distinct,
1.227 misha 1002: /*row=*/0,
1003: value_type
1.193 paf 1004: };
1.314 moko 1005: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 1006:
1007: int saved_current=self_table.current();
1008: self_table.for_each(table_row_to_hash, &info);
1009: self_table.set_current(saved_current);
1.207 paf 1010:
1011: result.extract_default();
1.182 paf 1012: }
1.74 paf 1013: }
1.238 misha 1014: }
1.97 parser 1015: r.write_no_lang(result);
1.74 paf 1016: }
1017:
1.110 parser 1018: #ifndef DOXYGEN
1.78 paf 1019: struct Table_seq_item {
1.182 paf 1020: ArrayString* row;
1.34 paf 1021: union {
1.182 paf 1022: const char *c_str;
1.34 paf 1023: double d;
1024: } value;
1.32 paf 1025: };
1.110 parser 1026: #endif
1.34 paf 1027: static int sort_cmp_string(const void *a, const void *b) {
1028: return strcmp(
1.78 paf 1029: static_cast<const Table_seq_item *>(a)->value.c_str,
1030: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 1031: );
1032: }
1033: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 1034: double va=static_cast<const Table_seq_item *>(a)->value.d;
1035: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 1036: if(va<vb)
1037: return -1;
1038: else if(va>vb)
1039: return +1;
1040: else
1041: return 0;
1042: }
1.182 paf 1043: static void _sort(Request& r, MethodParams& params) {
1044: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 1045:
1.182 paf 1046: bool reverse=params.count()>1/*..[desc|asc|]*/?
1047: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 1048: false; // default=asc
1.32 paf 1049:
1.182 paf 1050: Table& old_table=GET_SELF(r, VTable).table();
1051: Table& new_table=*new Table(old_table.columns());
1.34 paf 1052:
1.182 paf 1053: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 1054: int i;
1055:
1056: // calculate key values
1057: bool key_values_are_strings=true;
1.182 paf 1058: int old_count=old_table.count();
1059: for(i=0; i<old_count; i++) {
1.101 parser 1060: old_table.set_current(i);
1.32 paf 1061: // calculate key value
1.182 paf 1062: seq[i].row=old_table[i];
1.287 moko 1063: Value& value=r.process_to_value(key_maker);
1.34 paf 1064: if(i==0) // determining key values type by first one
1065: key_values_are_strings=value.is_string();
1066:
1067: if(key_values_are_strings)
1068: seq[i].value.c_str=value.as_string().cstr();
1069: else
1.287 moko 1070: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1071: }
1.265 misha 1072:
1073: // @todo: handle this elsewhere
1074: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1075: for(i=0; i<old_count; i++)
1076: if(*seq[i].value.c_str)
1077: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
1078: }
1079:
1.266 misha 1080: // sort keys
1.295 moko 1081: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1082:
1.34 paf 1083: // reorder table as they require in 'seq'
1.182 paf 1084: for(i=0; i<old_count; i++)
1085: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1086:
1087: delete[] seq;
1.32 paf 1088:
1.116 parser 1089: // replace any previous table value
1.182 paf 1090: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1091: }
1092:
1.176 paf 1093: #ifndef DOXYGEN
1.182 paf 1094: struct Expression_is_true_info {
1.176 paf 1095: Request* r;
1096: Value* expression_code;
1097: };
1098: #endif
1.275 misha 1099:
1.191 paf 1100: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1101: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1102: }
1.275 misha 1103:
1104: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1105: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1106: Table::Action_options o=get_action_options(r, params, 1, table);
1107: if(params.count()>2)
1108: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1109: Expression_is_true_info info={&r, &expression_code};
1110: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1111: }
1.275 misha 1112:
1113: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1114: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1115: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1116: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1117: return table.locate(name, value, o);
1118: }
1.275 misha 1119:
1.182 paf 1120: static void _locate(Request& r, MethodParams& params) {
1121: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1122:
1.291 moko 1123: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1124: _locate_expression(table, r, params) :
1125: _locate_name_value(table, r, params);
1.249 misha 1126: r.write_no_lang(VBool::get(result));
1.145 paf 1127: }
1.182 paf 1128:
1129:
1.191 paf 1130: static void _flip(Request& r, MethodParams&) {
1.182 paf 1131: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1132: Table& new_table=*new Table(0);
1.182 paf 1133: if(size_t old_count=old_table.count())
1.310 moko 1134: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1135: for(size_t column=0; column<old_cols; column++) {
1136: Table::element_type new_row(new ArrayString(old_count));
1137: for(size_t i=0; i<old_count; i++) {
1138: Table::element_type old_row=old_table[i];
1139: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1140: }
1.182 paf 1141: new_table+=new_row;
1.39 paf 1142: }
1143:
1.182 paf 1144: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1145: }
1146:
1.293 misha 1147: static void _foreach(Request& r, MethodParams& params) {
1148: InCycle temp(r);
1149:
1150: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1151: const String& value_name=params.as_string(1, "value-var name must be string");
1152:
1153: Value& body_code=params.as_junction(2, "body must be code");
1154:
1155: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1156:
1157: Table& table=GET_SELF(r, VTable).table();
1158: size_t saved_current=table.current();
1159:
1160: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1161: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1162:
1163: Value* var_context=r.get_method_frame()->caller();
1164:
1165: if(delim_maybe_code) { // delimiter set
1166: bool need_delim=false;
1.316 moko 1167: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1168: table.set_current(row);
1169:
1170: if(rownum_var_name)
1.299 moko 1171: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1172: if(value_var_name)
1.299 moko 1173: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1174:
1175: StringOrValue sv_processed=r.process(body_code);
1176: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1177:
1178: const String* s_processed=sv_processed.get_string();
1179: if(s_processed && !s_processed->is_empty()) { // we have body
1180: if(need_delim) // need delim & iteration produced string?
1181: r.write_pass_lang(r.process(*delim_maybe_code));
1182: else
1183: need_delim=true;
1184: }
1185:
1186: r.write_pass_lang(sv_processed);
1187:
1188: if(lskip==Request::SKIP_BREAK)
1189: break;
1190: }
1191: } else {
1.316 moko 1192: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1193: table.set_current(row);
1194:
1195: if(rownum_var_name)
1.300 moko 1196: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1197: if(value_var_name)
1.300 moko 1198: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1199:
1200: r.process_write(body_code);
1201: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1202:
1203: if(lskip==Request::SKIP_BREAK)
1204: break;
1205: }
1206: }
1207: table.set_current(saved_current);
1208: }
1209:
1.309 moko 1210: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1211: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1212: }
1213:
1214: inline Table::element_type row_from_string(Request& r, Value ¶m){
1215: if(!param.is_string() && !param.get_junction())
1216: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1217:
1.182 paf 1218: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.309 moko 1219: const String& string=r.process_to_string(param);
1.41 paf 1220:
1221: // parse cells
1.182 paf 1222: Table::element_type row=new ArrayString;
1223: size_t pos_after=0;
1224: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1225:
1.309 moko 1226: return row;
1.41 paf 1227: }
1228:
1.309 moko 1229: static void _append(Request& r, MethodParams& params) {
1230: VTable vtable=GET_SELF(r, VTable);
1231: Table& table=vtable.table();
1.306 moko 1232:
1.309 moko 1233: HashStringValue* hash=params[0].get_hash();
1234: if(hash){
1235: table+=new ArrayString();
1236: size_t saved_current=table.current();
1237: table.set_current(table.count()-1);
1238: hash->for_each<VTable*>(update_cell, &vtable);
1239: table.set_current(saved_current);
1240: } else {
1241: table+=row_from_string(r, params[0]);
1242: }
1243: }
1.306 moko 1244:
1.309 moko 1245: static void _insert(Request& r, MethodParams& params) {
1246: VTable vtable=GET_SELF(r, VTable);
1247: Table& table=vtable.table();
1248: HashStringValue* hash=params[0].get_hash();
1249: if(hash){
1250: table.insert(table.current(), new ArrayString());
1251: hash->for_each<VTable*>(update_cell, &vtable);
1252: } else {
1253: table.insert(table.current(), row_from_string(r, params[0]));
1254: }
1.306 moko 1255: }
1256:
1.311 moko 1257: static void _delete(Request& r, MethodParams&) {
1.307 moko 1258: Table& table=GET_SELF(r, VTable).table();
1259: table.remove_current();
1260: }
1261:
1.182 paf 1262: static void join_named_row(Table& src, Table* dest) {
1263: Table::columns_type dest_columns=dest->columns();
1264: size_t dest_columns_count=dest_columns->count();
1265: Table::element_type dest_row(new ArrayString(dest_columns_count));
1266: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1267: const String* src_item=src.item(*dest_columns->get(dest_column));
1268: *dest_row+=src_item?src_item:new String;
1269: }
1270: *dest+=dest_row;
1271: }
1272: static void join_nameless_row(Table& src, Table* dest) {
1273: *dest+=src[src.current()];
1274: }
1275: static void _join(Request& r, MethodParams& params) {
1.288 misha 1276: Table& src=*params.as_table(0, "source");
1.176 paf 1277:
1.268 misha 1278: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1279:
1.182 paf 1280: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1281: if(&src == &dest)
1.318 moko 1282: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1283:
1.193 paf 1284: if(dest.columns()) // dest is named
1.182 paf 1285: src.table_for_each(join_named_row, &dest, o);
1286: else // dest is nameless
1287: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1288: }
1289:
1.94 parser 1290: #ifndef DOXYGEN
1.169 paf 1291: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1292: ArrayString& columns;
1.218 paf 1293: int columns_count;
1.182 paf 1294: ArrayString* row;
1.94 parser 1295: public:
1.182 paf 1296: Table* table;
1297: public:
1298: Table_sql_event_handlers() :
1299: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1300: }
1301:
1.279 misha 1302: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1303: try {
1.274 moko 1304: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1305: return false;
1306: } catch(...) {
1307: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1308: return true;
1309: }
1310: }
1311: bool before_rows(SQL_Error& error) {
1312: try {
1.182 paf 1313: table=new Table(&columns);
1.218 paf 1314: columns_count=columns.count();
1.170 paf 1315: return false;
1316: } catch(...) {
1317: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1318: return true;
1319: }
1320: }
1321: bool add_row(SQL_Error& error) {
1322: try {
1.218 paf 1323: *table+=row=new ArrayString(columns_count);
1.170 paf 1324: return false;
1325: } catch(...) {
1326: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1327: return true;
1328: }
1329: }
1.279 misha 1330: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1331: try {
1.292 misha 1332: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1333: return false;
1334: } catch(...) {
1335: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1336: return true;
1337: }
1.94 parser 1338: }
1339: };
1340: #endif
1.204 paf 1341:
1342: static void marshal_bind(
1343: HashStringValue::key_type aname,
1344: HashStringValue::value_type avalue,
1345: SQL_Driver::Placeholder** pptr)
1346: {
1347: SQL_Driver::Placeholder& ph=**pptr;
1348: ph.name=aname.cstr();
1.261 misha 1349: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1350: ph.is_null=avalue->get_class()==void_class;
1351: ph.were_updated=false;
1352:
1353: (*pptr)++;
1354: }
1355:
1356: // not static, used elsewhere
1357: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1358: int hash_count=hash.count();
1.302 moko 1359: placeholders=new SQL_Driver::Placeholder[hash_count];
1.204 paf 1360: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1361: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1362: return hash_count;
1363: }
1364:
1365: // not static, used elsewhere
1366: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1367: SQL_Driver::Placeholder* ph=placeholders;
1368: for(int i=0; i<placeholder_count; i++, ph++)
1369: if(ph->were_updated) {
1370: Value* value;
1371: if(ph->is_null)
1.248 misha 1372: value=VVoid::get();
1.204 paf 1373: else
1.256 misha 1374: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1375: hash.put(ph->name, value);
1376: }
1377: }
1378:
1.182 paf 1379: static void _sql(Request& r, MethodParams& params) {
1380: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1381:
1.204 paf 1382: HashStringValue* bind=0;
1.244 misha 1383: ulong limit=SQL_NO_LIMIT;
1.100 parser 1384: ulong offset=0;
1.281 misha 1385: if(params.count()>1)
1.288 misha 1386: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1387: int valid_options=0;
1388: if(Value* vbind=options->get(sql_bind_name)) {
1389: valid_options++;
1390: bind=vbind->get_hash();
1391: }
1392: if(Value* vlimit=options->get(sql_limit_name)) {
1393: valid_options++;
1394: limit=(ulong)r.process_to_value(*vlimit).as_double();
1395: }
1396: if(Value* voffset=options->get(sql_offset_name)) {
1397: valid_options++;
1398: offset=(ulong)r.process_to_value(*voffset).as_double();
1399: }
1400: if(valid_options!=options->count())
1401: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1402: }
1.49 paf 1403:
1.204 paf 1404: SQL_Driver::Placeholder* placeholders=0;
1405: uint placeholders_count=0;
1406: if(bind)
1407: placeholders_count=marshal_binds(*bind, placeholders);
1408:
1.182 paf 1409: Temp_lang temp_lang(r, String::L_SQL);
1410: const String& statement_string=r.process_to_string(statement);
1.262 misha 1411: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1412:
1.182 paf 1413: Table_sql_event_handlers handlers;
1.294 moko 1414:
1.182 paf 1415: r.connection()->query(
1.203 paf 1416: statement_cstr,
1.208 paf 1417: placeholders_count, placeholders,
1.203 paf 1418: offset, limit,
1.160 paf 1419: handlers,
1420: statement_string);
1.135 paf 1421:
1.204 paf 1422: if(bind)
1423: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1424:
1.182 paf 1425: Table& result=
1426: handlers.table?*handlers.table: // query resulted in table? return it
1427: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1428:
1429: // replace any previous table value
1.182 paf 1430: GET_SELF(r, VTable).set_table(result);
1.49 paf 1431: }
1432:
1.233 misha 1433: static void _columns(Request& r, MethodParams& params) {
1434: const String* column_column_name;
1435: if(params.count()>0)
1436: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1437: else
1438: column_column_name=new String("column");
1.88 parser 1439:
1.182 paf 1440: Table::columns_type result_columns(new ArrayString);
1.233 misha 1441: *result_columns+=column_column_name;
1.182 paf 1442: Table& result_table=*new Table(result_columns);
1.88 parser 1443:
1.182 paf 1444: Table& source_table=GET_SELF(r, VTable).table();
1445: if(Table::columns_type source_columns=source_table.columns()) {
1446: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1447: Table::element_type result_row(new ArrayString);
1448: *result_row+=i.next();
1449: result_table+=result_row;
1.88 parser 1450: }
1451: }
1452:
1.182 paf 1453: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1454: }
1455:
1.182 paf 1456: static void _select(Request& r, MethodParams& params) {
1.231 misha 1457: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1458:
1.182 paf 1459: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1460:
1.277 moko 1461: int limit=source_table.count();
1.282 misha 1462: int offset=0;
1463: bool reverse=false;
1.278 moko 1464:
1.281 misha 1465: if(params.count()>1)
1466: if(HashStringValue* options=params.as_hash(1)) {
1467: int valid_options=0;
1468: if(Value* vlimit=options->get(sql_limit_name)) {
1469: valid_options++;
1470: limit=r.process_to_value(*vlimit).as_int();
1471: }
1472: if(Value* voffset=options->get(sql_offset_name)) {
1473: valid_options++;
1474: offset=r.process_to_value(*voffset).as_int();
1475: }
1476: if(Value* vreverse=options->get(table_reverse_name)) {
1477: valid_options++;
1478: reverse=r.process_to_value(*vreverse).as_bool();
1479: }
1480: if(valid_options!=options->count())
1.288 misha 1481: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1482: }
1483:
1484: Table& result_table=*new Table(source_table.columns());
1.277 moko 1485:
1.283 misha 1486: size_t size=source_table.count();
1487: if(offset<0)
1488: offset+=size;
1.284 misha 1489: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1490: size_t saved_current=source_table.current();
1491: size_t appended=0;
1492:
1493: if(reverse){
1494: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1495: source_table.set_current(row);
1496:
1497: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1498:
1499: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1500: result_table+=source_table[row];
1501: if(row==0) break;
1502: }
1503: } else {
1504: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1505: source_table.set_current(row);
1.148 paf 1506:
1.282 misha 1507: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1508:
1.282 misha 1509: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1510: result_table+=source_table[row];
1511: }
1.277 moko 1512: }
1.282 misha 1513: source_table.set_current(saved_current);
1.148 paf 1514: }
1515:
1.182 paf 1516: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1517: }
1518:
1.66 paf 1519: // constructor
1520:
1.182 paf 1521: MTable::MTable(): Methoded("table") {
1.142 paf 1522: // ^table::create{data}
1523: // ^table::create[nameless]{data}
1524: // ^table::create[table]
1.236 misha 1525: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1526: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1527: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1528:
1.142 paf 1529: // ^table::load[file]
1530: // ^table::load[nameless;file]
1.168 paf 1531: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1532:
1533: // ^table.save[file]
1534: // ^table.save[nameless;file]
1.188 paf 1535: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1536:
1.224 misha 1537: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1538:
1.297 moko 1539: // ^table.csv-string[]
1540: // ^table.csv-string[nameless]
1541: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1542: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1543:
1.6 paf 1544: // ^table.count[]
1.280 misha 1545: // ^table.count[rows]
1546: // ^table.count[columns]
1547: // ^table.count[cells]
1548: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1549:
1550: // ^table.line[]
1.66 paf 1551: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1552:
1.10 paf 1553: // ^table.offset[]
1.133 paf 1554: // ^table.offset(offset)
1555: // ^table.offset[cur|set](offset)
1556: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1557:
1.10 paf 1558: // ^table.menu{code}
1559: // ^table.menu{code}[delim]
1.66 paf 1560: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1561:
1.239 misha 1562: // ^table.hash[key field name]
1563: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1564: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1565:
1.102 parser 1566: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1567: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1568: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1569:
1.36 paf 1570: // ^table.locate[field;value]
1.176 paf 1571: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1572:
1573: // ^table.flip[]
1.66 paf 1574: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1575:
1.293 misha 1576: // ^table.foreach[row-num;value]{code}
1577: // ^table.foreach[row-num;value]{code}[delim]
1578: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1579:
1.306 moko 1580: // ^table.append{row{tab}data}
1.66 paf 1581: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1582:
1.306 moko 1583: // ^table.insert{row{tab}data} before current row
1584: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1585:
1.307 moko 1586: // ^table.delete[] current row
1587: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1588:
1.157 paf 1589: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1590: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1591:
1592:
1.239 misha 1593: // ^table::sql[query]
1594: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1595: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1596:
1.239 misha 1597: // ^table.columns[[column name]]
1.233 misha 1598: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1599:
1600: // ^table.select(expression) = table
1.277 moko 1601: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1602: }
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