Annotation of parser3/src/classes/table.C, revision 1.297
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.286 moko 4: Copyright (c) 2001-2012 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:
1.257 misha 8: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 9: #include <sstream>
1.240 misha 10: #endif
1.1 paf 11:
1.105 parser 12: #include "classes.h"
1.182 paf 13: #include "pa_vmethod_frame.h"
14:
1.16 paf 15: #include "pa_common.h"
1.1 paf 16: #include "pa_request.h"
1.265 misha 17: #include "pa_charsets.h"
1.1 paf 18: #include "pa_vtable.h"
1.6 paf 19: #include "pa_vint.h"
1.51 paf 20: #include "pa_sql_connection.h"
1.72 paf 21: #include "pa_vbool.h"
1.277 moko 22: #include "pa_array.h"
1.1 paf 23:
1.297 ! moko 24: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.296 2013/10/04 21:21:54 moko Exp $";
1.286 moko 25:
1.66 paf 26: // class
27:
1.182 paf 28: class MTable: public Methoded {
1.66 paf 29: public: // VStateless_class
1.264 misha 30: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 31: public:
1.182 paf 32: MTable();
1.66 paf 33: };
1.1 paf 34:
1.182 paf 35: // global variable
36:
37: DECLARE_CLASS_VAR(table, new MTable, 0);
38:
39: #define TABLE_REVERSE_NAME "reverse"
40:
41: // globals
42:
1.203 paf 43: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 44: String sql_limit_name(PA_SQL_LIMIT_NAME);
45: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 46: String sql_default_name(SQL_DEFAULT_NAME);
47: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 48: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 49: String table_reverse_name(TABLE_REVERSE_NAME);
50:
1.1 paf 51: // methods
1.66 paf 52:
1.182 paf 53: static Table::Action_options get_action_options(Request& r, MethodParams& params,
1.268 misha 54: 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
1.226 misha 75: throw Exception(PARSER_RUNTIME,
1.176 paf 76: &soffset,
77: "must be 'cur' string or expression");
78: } else
79: result.offset=r.process_to_value(*voffset).as_int();
80: }
1.182 paf 81: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 82: valid_options++;
83: result.limit=r.process_to_value(*vlimit).as_int();
84: }
1.182 paf 85: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
86: valid_options++;
87: result.reverse=r.process_to_value(*vreverse).as_bool();
88: if(result.reverse && !defined_offset)
89: result.offset=source.count()-1;
90: }
91:
92: if(valid_options!=options->count())
1.272 misha 93: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.176 paf 94:
95: return result;
96: }
1.180 paf 97: static void check_option_param(bool options_defined,
1.182 paf 98: MethodParams& params, size_t next_param_index,
1.176 paf 99: const char *msg) {
1.182 paf 100: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 101: throw Exception(PARSER_RUNTIME,
1.182 paf 102: 0,
1.176 paf 103: "%s", msg);
1.157 paf 104: }
105:
1.236 misha 106: struct TableSeparators {
107: char column; const String* scolumn;
108: char encloser; const String* sencloser;
109:
110: TableSeparators():
1.254 misha 111: column('\t'), scolumn(new String("\t")),
1.236 misha 112: encloser(0), sencloser(0)
113: {}
114: int load( HashStringValue& options ) {
115: int result=0;
116: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
117: scolumn=&vseparator->as_string();
118: if(scolumn->length()!=1)
119: throw Exception(PARSER_RUNTIME,
120: scolumn,
121: "separator must be one character long");
122: column=scolumn->first_char();
123: result++;
124: }
125: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
126: sencloser=&vencloser->as_string();
1.297 ! moko 127: if(sencloser->is_empty()){
! 128: encloser=0;
! 129: } else {
1.236 misha 130: if(sencloser->length()!=1)
131: throw Exception(PARSER_RUNTIME,
132: sencloser,
133: "encloser must be one character long");
134: encloser=sencloser->first_char();
1.297 ! moko 135: }
1.236 misha 136: result++;
137: }
138: return result;
139: }
140: };
141:
1.182 paf 142: static void _create(Request& r, MethodParams& params) {
1.157 paf 143: // clone/copy part?
1.182 paf 144: if(Table *source=params[0].get_table()) {
1.268 misha 145: Table::Action_options o=get_action_options(r, params, 1, *source);
1.182 paf 146: check_option_param(o.defined, params, 1,
1.176 paf 147: "too many parameters");
1.182 paf 148: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 149: return;
150: }
1.142 paf 151:
1.236 misha 152: size_t data_param_index=0;
153: bool nameless=false;
154:
155: if(params.count()>1) {
156: if(params[0].is_string()){ // can be nameless only
157: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
158: if(snameless!="nameless")
159: throw Exception(PARSER_RUNTIME,
160: &snameless,
161: "table::create called with more then 1 param, first param may be only 'nameless'");
162: nameless=true;
163: data_param_index++;
164: }
165: }
166:
167: HashStringValue *options=0;
168: TableSeparators separators;
169:
170: size_t options_param_index=data_param_index+1;
171: if(
172: options_param_index<params.count()
1.288 misha 173: && (options=params.as_hash(options_param_index))
1.236 misha 174: ) {
175: // cloning, so that we could change
176: options=new HashStringValue(*options);
177: separators.load(*options);
178: if(separators.encloser){
179: throw Exception(PARSER_RUNTIME,
180: 0,
181: "encloser not supported for table::create yet");
182: }
183: }
184:
185: // data
1.182 paf 186: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
187: const String& data=
1.236 misha 188: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 189:
190: // parse columns
1.182 paf 191: size_t raw_pos_after=0;
192: Table::columns_type columns;
1.236 misha 193:
194: if(nameless){
1.182 paf 195: columns=Table::columns_type(0); // nameless
1.21 paf 196: } else {
1.182 paf 197: columns=Table::columns_type(new ArrayString);
1.44 paf 198:
1.182 paf 199: ArrayString head;
200: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
201: if(head.count()) {
202: size_t col_pos_after=0;
1.285 misha 203: if(head[0]->is_empty())
204: *columns += new String();
205: else
206: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 207: }
1.44 paf 208: }
209:
1.182 paf 210: Table& table=*new Table(columns);
1.44 paf 211: // parse cells
1.182 paf 212:
213: ArrayString rows;
214: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
215: Array_iterator<const String*> i(rows);
1.98 parser 216: while(i.has_next()) {
1.182 paf 217: Table::element_type row(new ArrayString);
1.252 misha 218: const String& string=*i.next();
1.118 parser 219: // remove comment lines
1.252 misha 220: if(string.is_empty())
1.44 paf 221: continue;
222:
1.182 paf 223: size_t col_pos_after=0;
1.236 misha 224: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 225: table+=row;
1.17 paf 226: }
1.1 paf 227:
1.44 paf 228: // replace any previous table value
1.182 paf 229: GET_SELF(r, VTable).set_table(table);
1.44 paf 230: }
231:
1.187 paf 232: struct lsplit_result {
233: char* piece;
234: char delim;
235:
236: operator bool() { return piece!=0; }
237: };
238:
239: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
240: lsplit_result result;
1.273 misha 241: if(string) {
1.187 paf 242: char delims[]={delim1, delim2, 0};
243: if(char* v=strpbrk(string, delims)) {
244: result.delim=*v;
245: *v=0;
246: result.piece=v+1;
247: return result;
248: }
1.273 misha 249: }
1.187 paf 250: result.piece=0;
251: result.delim=0;
1.273 misha 252: return result;
1.187 paf 253: }
254:
255: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
1.273 misha 256: lsplit_result result;
1.187 paf 257: result.piece=*string_ref;
258: lsplit_result next=lsplit(*string_ref, delim1, delim2);
259: result.delim=next.delim;
260: *string_ref=next.piece;
1.273 misha 261: return result;
1.187 paf 262: }
263:
264: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
265: lsplit_result result;
266:
1.273 misha 267: if(char* string=*string_ref) {
1.187 paf 268: if(encloser && *string==encloser) {
1.273 misha 269: string++;
1.187 paf 270:
271: char *read;
272: char *write;
273: write=read=string;
274: char c;
1.290 moko 275: // we are enclosed, searching for second encloser
276: while(c=*read++) {
1.187 paf 277: if(c==encloser) {
1.290 moko 278: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 279: read++;
1.290 moko 280: else
281: break; // note: skipping encloser
1.187 paf 282: }
283: *write++=c;
284: }
1.290 moko 285: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
286: while(c=*read++) {
287: if(c==delim1 || c==delim2) {
288: result.delim=c;
289: break;
290: } else if(c!=encloser)
291: *write++=c;
292: }
1.187 paf 293: *write=0; // terminate
294: *string_ref=c? read: 0;
295: result.piece=string;
296: return result;
297: } else
298: return lsplit(string_ref, delim1, delim2);
1.273 misha 299: }
1.187 paf 300: result.piece=0;
1.273 misha 301: return result;
1.187 paf 302: }
303:
304: static void skip_empty_and_comment_lines( char** data_ref ) {
305: if(char *data=*data_ref) {
306: while( char c=*data ) {
307: if( c== '\n' || c == '#' ) {
308: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 309: if(!(*data_ref=data))
310: break;
1.187 paf 311: continue;
312: }
313: break;
314: }
315: }
316: }
317:
1.273 misha 318: static void skip_empty_lines( char** data_ref ) {
319: if(char *data=*data_ref) {
320: while( char c=*data ) {
321: if( c== '\n' ) {
322: /*nowhere=*/getrow(&data); // remove empty lines
323: if(!(*data_ref=data))
324: break;
325: continue;
326: }
327: break;
328: }
329: }
330: }
331:
332: typedef void (*Skip_lines_action)(char** data_ref);
333:
1.182 paf 334: static void _load(Request& r, MethodParams& params) {
1.232 misha 335: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 336: int filename_param_index=0;
337: bool nameless=first_param=="nameless";
338: if(nameless)
339: filename_param_index++;
1.182 paf 340: size_t options_param_index=filename_param_index+1;
1.186 paf 341:
342: HashStringValue *options=0;
1.187 paf 343: TableSeparators separators;
1.186 paf 344: if(options_param_index<params.count()
1.288 misha 345: && (options=params.as_hash(options_param_index))) {
1.186 paf 346: // cloning, so that we could change [to simplify checks on params inside file_read_text
347: options=new HashStringValue(*options);
1.187 paf 348: separators.load(*options);
1.186 paf 349: }
350:
1.44 paf 351: // loading text
1.247 misha 352: char *data=file_load_text(r,
1.232 misha 353: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 354: true,
1.186 paf 355: options
1.168 paf 356: );
1.44 paf 357:
1.273 misha 358: Skip_lines_action skip_lines_action = (separators.column=='#' || separators.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
359:
1.1 paf 360: // parse columns
1.182 paf 361: Table::columns_type columns;
1.168 paf 362: if(nameless) {
1.182 paf 363: columns=Table::columns_type(0); // nameless
1.1 paf 364: } else {
1.182 paf 365: columns=Table::columns_type(new ArrayString);
1.1 paf 366:
1.273 misha 367: skip_lines_action(&data);
1.187 paf 368: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 369: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 370: if(sr.delim=='\n')
371: break;
1.139 paf 372: }
1.1 paf 373: }
1.187 paf 374:
375: Table& table=*new Table(columns);
1.219 paf 376: int columns_count=columns? columns->count(): 0;
1.1 paf 377:
378: // parse cells
1.218 paf 379: Table::element_type row(new ArrayString(columns_count));
1.273 misha 380: skip_lines_action(&data);
1.187 paf 381: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 382: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
383: break;
1.256 misha 384: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 385: if(sr.delim=='\n') {
386: table+=row;
1.218 paf 387: row=new ArrayString(columns_count);
1.273 misha 388: skip_lines_action(&data);
1.1 paf 389: }
1.187 paf 390: }
391: // last line [if without \n]
392: if(row->count())
1.1 paf 393: table+=row;
1.187 paf 394:
1.1 paf 395: // replace any previous table value
1.182 paf 396: GET_SELF(r, VTable).set_table(table);
1.1 paf 397: }
1.2 paf 398:
1.257 misha 399: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.297 ! moko 400: #define USE_STRINGSTREAM
! 401: #endif
1.241 misha 402:
1.297 ! moko 403: #ifdef USE_STRINGSTREAM
1.269 misha 404: #include "gc_allocator.h"
405:
406: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
407: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
408:
1.297 ! moko 409: void maybe_enclose( pa_stringstream& to, const String* from, char encloser ) {
! 410: if(from){
1.257 misha 411: to<<encloser;
1.188 paf 412: // while we have 'encloser'...
1.189 paf 413: size_t pos_after=0;
1.297 ! moko 414: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 415: pos_before++; // including first encloser (and skipping it for next pos)
1.297 ! moko 416: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 417: to<<encloser; // doubling encloser
1.188 paf 418: }
419: // last piece
1.297 ! moko 420: size_t from_length=from->length();
1.188 paf 421: if(pos_after<from_length)
1.297 ! moko 422: to<<from->mid(pos_after, from_length).cstr();
! 423: to<<encloser;
! 424: } else {
! 425: to<<encloser<<encloser;
! 426: }
! 427: }
! 428:
! 429: static void table_to_csv(pa_stringstream& result, Table& table, TableSeparators& separators, bool output_column_names) {
! 430: if(output_column_names) {
! 431: if(table.columns()) { // named table
! 432: if(separators.encloser){
! 433: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
! 434: maybe_enclose( result, i.next(), separators.encloser );
! 435: if(i.has_next())
! 436: result<<separators.column;
! 437: }
! 438: } else {
! 439: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
! 440: result<<i.next()->cstr();
! 441: if(i.has_next())
! 442: result<<separators.column;
! 443: }
! 444: }
! 445: } else { // nameless table [we were asked to output column names]
! 446: if(int lsize=table.count()?table[0]->count():0)
! 447: for(int column=0; column<lsize; column++) {
! 448: if(separators.encloser) {
! 449: result<<separators.encloser<<column<<separators.encloser;
! 450: } else {
! 451: result<<column;
! 452: }
! 453: if(column<lsize-1){
! 454: result<<separators.column;
! 455: }
! 456: }
! 457: else
! 458: result<<"empty nameless table";
! 459: }
! 460: result<<'\n';
! 461: }
1.188 paf 462:
1.297 ! moko 463: // process data lines
! 464: Array_iterator<ArrayString*> i(table);
! 465: if(separators.encloser){
! 466: while(i.has_next()) {
! 467: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
! 468: maybe_enclose( result, c.next(), separators.encloser );
! 469: if(c.has_next())
! 470: result<<separators.column;
! 471: }
! 472: result<<'\n';
! 473: }
! 474: } else {
! 475: while(i.has_next()) {
! 476: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
! 477: result<<c.next()->cstr();
! 478: if(c.has_next())
! 479: result<<separators.column;
! 480: }
! 481: result<<'\n';
! 482: }
! 483: }
1.188 paf 484: }
485:
1.241 misha 486: #else
487:
1.297 ! moko 488: void maybe_enclose( String& to, const String* from, char encloser, const String* sencloser ) {
! 489: if(from){
1.257 misha 490: to<<*sencloser;
1.224 misha 491: // while we have 'encloser'...
492: size_t pos_after=0;
1.297 ! moko 493: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.224 misha 494: pos_before++; // including first encloser (and skipping it for next pos)
1.297 ! moko 495: to<<from->mid(pos_after, pos_before);
1.257 misha 496: to<<*sencloser; // doubling encloser
1.224 misha 497: }
498: // last piece
1.297 ! moko 499: size_t from_length=from->length();
1.224 misha 500: if(pos_after<from_length)
1.297 ! moko 501: to<<from->mid(pos_after, from_length);
1.257 misha 502: to<<*sencloser;
1.297 ! moko 503: } else {
! 504: to<<*sencloser<<*sencloser;
! 505: }
1.224 misha 506: }
507:
1.297 ! moko 508: static void table_to_csv(String& result, Table& table, TableSeparators& separators, bool output_column_names) {
! 509: if(output_column_names) {
! 510: if(table.columns()) { // named table
! 511: if(separators.encloser) {
! 512: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
! 513: maybe_enclose( result, i.next(), separators.encloser, separators.sencloser );
! 514: if(i.has_next())
! 515: result<<*separators.scolumn;
! 516: }
! 517: } else {
! 518: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
! 519: result<<*i.next();
! 520: if(i.has_next())
! 521: result<<*separators.scolumn;
! 522: }
! 523: }
! 524: } else { // nameless table [we were asked to output column names]
! 525: if(int lsize=table.count()?table[0]->count():0)
! 526: for(int column=0; column<lsize; column++) {
! 527: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
! 528: result.append_know_length(cindex_tab,
! 529: snprintf(cindex_tab, MAX_NUMBER,
! 530: column<lsize-1?"%d%c":"%d", column, separators.column),
! 531: String::L_CLEAN);
! 532: }
! 533: else
! 534: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
! 535: }
! 536: result.append_know_length("\n", 1, String::L_CLEAN);
! 537: }
! 538:
! 539: // data lines
! 540: Array_iterator<ArrayString*> i(table);
! 541: if(separators.encloser){
! 542: while(i.has_next()) {
! 543: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
! 544: maybe_enclose( result, c.next(), separators.encloser, separators.sencloser );
! 545: if(c.has_next())
! 546: result<<*separators.scolumn;
! 547: }
! 548: result.append_know_length("\n", 1, String::L_CLEAN);
! 549: }
! 550: } else {
! 551: while(i.has_next()) {
! 552: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
! 553: result<<*c.next();
! 554: if(c.has_next())
! 555: result<<*separators.scolumn;
! 556: }
! 557: result.append_know_length("\n", 1, String::L_CLEAN);
! 558: }
! 559: }
! 560: }
1.257 misha 561: #endif // don't use stringstream
1.241 misha 562:
1.297 ! moko 563:
1.241 misha 564: static void _save(Request& r, MethodParams& params) {
1.237 misha 565: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 566: size_t param_index=1;
567:
568: bool do_append=false;
569: bool output_column_names=true;
570:
571: // mode?
572: if(first_arg=="append")
573: do_append=true;
574: else if(first_arg=="nameless")
575: output_column_names=false;
576: else
577: --param_index;
578:
1.232 misha 579: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 580: String file_spec=r.absolute(file_name);
581:
582: if(do_append && file_exist(file_spec))
583: output_column_names=false;
1.188 paf 584:
585: TableSeparators separators;
1.281 misha 586: if(param_index<params.count())
1.288 misha 587: if(HashStringValue* options=params.as_hash(param_index++)) {
1.281 misha 588: int valid_options=separators.load(*options);
589: if(valid_options!=options->count())
590: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 591: }
1.281 misha 592:
1.188 paf 593: if(param_index<params.count())
1.226 misha 594: throw Exception(PARSER_RUNTIME,
1.188 paf 595: 0,
596: "bad mode (must be nameless or append)");
1.22 paf 597:
1.182 paf 598: Table& table=GET_SELF(r, VTable).table();
1.31 paf 599:
1.297 ! moko 600: #ifdef USE_STRINGSTREAM
1.269 misha 601: pa_stringstream ost(std::stringstream::out);
1.257 misha 602:
1.297 ! moko 603: table_to_csv(ost, table, separators, output_column_names);
1.31 paf 604:
605: // write
1.269 misha 606: pa_string data=ost.str();
1.257 misha 607: const char* data_cstr=data.c_str();
1.267 misha 608: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 609: #else
1.257 misha 610: String sdata;
1.224 misha 611:
1.297 ! moko 612: table_to_csv(sdata, table, separators, output_column_names);
1.224 misha 613:
614: // write
1.257 misha 615: const char* data_cstr=sdata.cstr();
1.297 ! moko 616: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 617: if(*data_cstr) // not empty (when empty it's not heap memory)
618: pa_free((void*)data_cstr); // not needed anymore
1.297 ! moko 619: #endif
! 620: }
! 621:
! 622: static void _csv_string(Request& r, MethodParams& params) {
! 623: bool output_column_names=true;
! 624: size_t param_index=0;
! 625: if(params.count()>0 && params[0].is_string()) {
! 626: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
! 627: output_column_names=false;
! 628: param_index++;
! 629: } else {
! 630: throw Exception(PARSER_RUNTIME,
! 631: 0,
! 632: "bad mode (must be nameless)");
! 633: }
1.224 misha 634: }
1.240 misha 635:
1.297 ! moko 636: TableSeparators separators;
! 637: if(param_index<params.count())
! 638: if(HashStringValue* options=params.as_hash(param_index++)) {
! 639: int valid_options=separators.load(*options);
! 640: if(valid_options!=options->count())
! 641: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
! 642: }
! 643:
! 644: Table& table=GET_SELF(r, VTable).table();
! 645:
! 646: #ifdef USE_STRINGSTREAM
! 647: pa_stringstream ost(std::stringstream::out);
! 648:
! 649: table_to_csv(ost, table, separators, output_column_names);
! 650:
! 651: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
! 652: #else
! 653: String sdata;
! 654:
! 655: table_to_csv(sdata, table, separators, output_column_names);
! 656:
! 657: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
! 658: #endif
1.224 misha 659: }
660:
1.280 misha 661: static void _count(Request& r, MethodParams& params) {
662: Table& table=GET_SELF(r, VTable).table();
663: size_t result=0;
664: if(params.count()) {
665: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
666: if(param == "columns")
667: result = table.columns() ? table.columns()->count() : 0;
668: else if(param == "cells")
669: result = table.count() ? table[table.current()]->count() : 0;
670: else if(param == "rows") // synonim for ^table.count[]
671: result = table.count();
672: else
673: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
674: } else
675: result = table.count();
676:
1.182 paf 677: r.write_no_lang(*new VInt(result));
1.6 paf 678: }
679:
1.182 paf 680: static void _line(Request& r, MethodParams&) {
681: int result=1+GET_SELF(r, VTable).table().current();
682: r.write_no_lang(*new VInt(result));
1.6 paf 683: }
684:
1.182 paf 685: static void _offset(Request& r, MethodParams& params) {
686: Table& table=GET_SELF(r, VTable).table();
687: if(params.count()) {
1.133 paf 688: bool absolute=false;
1.182 paf 689: if(params.count()>1) {
690: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 691: if(whence=="cur")
1.134 paf 692: absolute=false;
1.133 paf 693: else if(whence=="set")
1.134 paf 694: absolute=true;
1.133 paf 695: else
1.226 misha 696: throw Exception(PARSER_RUNTIME,
1.134 paf 697: &whence,
698: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 699: }
1.133 paf 700:
1.211 paf 701: int offset=params.as_int(params.count()-1, "offset must be expression", r);
702: table.offset(absolute, offset);
1.151 paf 703: } else
1.182 paf 704: r.write_no_lang(*new VInt(table.current()));
1.6 paf 705: }
706:
1.182 paf 707: static void _menu(Request& r, MethodParams& params) {
1.263 misha 708: InCycle temp(r);
1.221 paf 709:
1.182 paf 710: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 711:
1.182 paf 712: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 713:
1.182 paf 714: Table& table=GET_SELF(r, VTable).table();
1.293 misha 715: size_t saved_current=table.current();
716: size_t size=table.count();
1.7 paf 717:
1.251 misha 718: if(delim_maybe_code) { // delimiter set
1.250 misha 719: bool need_delim=false;
1.293 misha 720: for(size_t row=0; row<size; row++) {
1.250 misha 721: table.set_current(row);
722:
723: StringOrValue sv_processed=r.process(body_code);
724: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
725:
726: const String* s_processed=sv_processed.get_string();
1.251 misha 727: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 728: if(need_delim) // need delim & iteration produced string?
729: r.write_pass_lang(r.process(*delim_maybe_code));
730: else
731: need_delim=true;
732: }
733:
734: r.write_pass_lang(sv_processed);
1.242 misha 735:
1.250 misha 736: if(lskip==Request::SKIP_BREAK)
737: break;
738: }
739: } else {
1.293 misha 740: for(size_t row=0; row<size; row++) {
1.250 misha 741: table.set_current(row);
742:
743: r.process_write(body_code);
744: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
745:
746: if(lskip==Request::SKIP_BREAK)
747: break;
1.7 paf 748: }
749: }
1.99 parser 750: table.set_current(saved_current);
1.7 paf 751: }
752:
1.110 parser 753: #ifndef DOXYGEN
1.74 paf 754: struct Row_info {
1.166 paf 755: Request *r;
1.74 paf 756: Table *table;
1.182 paf 757: Value* key_code;
758: size_t key_field;
759: Array<int>* value_fields;
760: HashStringValue* hash;
1.174 paf 761: Table2hash_distint distinct;
1.182 paf 762: size_t row;
1.227 misha 763: Table2hash_value_type value_type;
1.74 paf 764: };
1.110 parser 765: #endif
1.182 paf 766: static void table_row_to_hash(Table::element_type row, Row_info *info) {
767: const String* key;
768: if(info->key_code) {
769: info->table->set_current(info->row++); // change context row
770: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 771: key=&sv_processed.as_string();
1.227 misha 772: } else {
1.182 paf 773: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 774: }
1.166 paf 775:
776: if(!key)
777: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 778:
1.243 misha 779: bool exist=false;
780: switch(info->value_type) {
781: case C_STRING: {
1.271 misha 782: size_t index=info->value_fields->get(0);
783: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : new VString());
1.243 misha 784: break;
1.227 misha 785: }
1.243 misha 786: case C_HASH: {
1.182 paf 787: VHash* vhash=new VHash;
788: HashStringValue& hash=vhash->hash();
789: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
790: size_t value_field=i.next();
791: if(value_field<row->count())
1.174 paf 792: hash.put(
1.182 paf 793: *info->table->columns()->get(value_field),
794: new VString(*row->get(value_field)));
1.174 paf 795: }
796:
1.227 misha 797: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 798: break;
1.174 paf 799: }
1.243 misha 800: case C_TABLE: {
801: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 802: Table* table;
1.227 misha 803: if(vtable) {
1.243 misha 804: if(info->distinct==D_ILLEGAL) {
805: exist=true;
806: break;
807: }
1.174 paf 808: table=vtable->get_table();
1.227 misha 809: } else {
1.174 paf 810: // no? creating table of same structure as source
1.179 paf 811: Table::Action_options table_options(0, 0);
1.182 paf 812: table=new Table(*info->table, table_options/*no rows, just structure*/);
813: info->hash->put(*key, new VTable(table));
1.174 paf 814: }
1.182 paf 815: *table+=row;
1.243 misha 816: break;
1.174 paf 817: }
1.74 paf 818: }
1.227 misha 819: if(exist && info->distinct==D_ILLEGAL)
820: throw Exception(PARSER_RUNTIME,
821: key,
822: "duplicate key");
1.74 paf 823: }
1.235 misha 824:
825: Table2hash_value_type get_value_type(Value& vvalue_type){
826: if(vvalue_type.is_string()) {
827: const String& svalue_type=*vvalue_type.get_string();
828: if(svalue_type == "table"){
829: return C_TABLE;
830: } else if (svalue_type == "string") {
831: return C_STRING;
832: } else if (svalue_type == "hash") {
833: return C_HASH;
834: } else {
835: throw Exception(PARSER_RUNTIME,
836: &svalue_type,
837: "must be 'hash', 'table' or 'string'");
838: }
839: } else {
840: throw Exception(PARSER_RUNTIME,
841: 0,
842: "'type' must be hash");
843: }
844: }
845:
1.182 paf 846: static void _hash(Request& r, MethodParams& params) {
847: Table& self_table=GET_SELF(r, VTable).table();
848: VHash& result=*new VHash;
1.238 misha 849: if(Table::columns_type columns=self_table.columns()){
1.182 paf 850: if(columns->count()>0) {
1.174 paf 851: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 852: Table2hash_value_type value_type=C_HASH;
1.182 paf 853: int param_index=params.count()-1;
1.166 paf 854: if(param_index>0) {
1.289 misha 855: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // can't use .as_has because the 2nd param could be table so .as_hash throws an error
1.166 paf 856: --param_index;
857: int valid_options=0;
1.238 misha 858: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 859: valid_options++;
1.174 paf 860: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
861: if(vdistinct_value.is_string()) {
862: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 863: if(sdistinct=="tables") {
864: value_type=C_TABLE;
865: distinct=D_FIRST;
1.238 misha 866: } else {
1.226 misha 867: throw Exception(PARSER_RUNTIME,
1.174 paf 868: &sdistinct,
869: "must be 'tables' or true/false");
1.238 misha 870: }
871: } else {
1.174 paf 872: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 873: }
1.166 paf 874: }
1.238 misha 875: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
876: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 877: throw Exception(PARSER_RUNTIME,
878: 0,
1.238 misha 879: "you can't specify $.distinct[tables] and $.type[] together");
880:
881: valid_options++;
882: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
883: }
1.226 misha 884:
1.182 paf 885: if(valid_options!=options->count())
1.272 misha 886: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 887: }
888: }
1.238 misha 889:
1.289 misha 890: if(param_index==2) // options was specified but not as hash
891: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
892:
1.182 paf 893: Array<int> value_fields;
1.238 misha 894: if(param_index==0){ // list of columns wasn't specified
895: if(value_type==C_STRING) // $.type[string]
896: throw Exception(PARSER_RUNTIME,
897: 0,
898: "you must specify one value field with option $.type[string]");
899:
900: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
901: value_fields+=i;
902:
903: } else { // list of columns was specified
1.227 misha 904: if(value_type==C_TABLE)
905: throw Exception(PARSER_RUNTIME,
1.174 paf 906: 0,
1.238 misha 907: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
908:
1.182 paf 909: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 910: if(value_fields_param.is_string()) { // one column as string was specified
911: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
912: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
913: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
914: const String& value_field_name =*i.next()->get(0);
915: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 916: }
917: } else
1.226 misha 918: throw Exception(PARSER_RUNTIME,
1.182 paf 919: 0,
1.226 misha 920: "value field(s) must be string or table");
1.239 misha 921: }
1.74 paf 922:
1.227 misha 923: if(value_type==C_STRING && value_fields.count()!=1)
924: throw Exception(PARSER_RUNTIME,
925: 0,
1.238 misha 926: "you can specify only one value field with option $.type[string]");
1.182 paf 927:
928: {
929: Value* key_param=¶ms[0];
1.193 paf 930: Row_info info={
931: &r,
932: &self_table,
933: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 934: /*key_field=*/0/*filled below*/,
1.193 paf 935: &value_fields,
936: &result.hash(),
937: distinct,
1.227 misha 938: /*row=*/0,
939: value_type
1.193 paf 940: };
1.195 paf 941: info.key_field=(info.key_code?-1
942: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 943:
944: int saved_current=self_table.current();
945: self_table.for_each(table_row_to_hash, &info);
946: self_table.set_current(saved_current);
1.207 paf 947:
948: result.extract_default();
1.182 paf 949: }
1.74 paf 950: }
1.238 misha 951: }
1.97 parser 952: r.write_no_lang(result);
1.74 paf 953: }
954:
1.110 parser 955: #ifndef DOXYGEN
1.78 paf 956: struct Table_seq_item {
1.182 paf 957: ArrayString* row;
1.34 paf 958: union {
1.182 paf 959: const char *c_str;
1.34 paf 960: double d;
961: } value;
1.32 paf 962: };
1.110 parser 963: #endif
1.34 paf 964: static int sort_cmp_string(const void *a, const void *b) {
965: return strcmp(
1.78 paf 966: static_cast<const Table_seq_item *>(a)->value.c_str,
967: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 968: );
969: }
970: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 971: double va=static_cast<const Table_seq_item *>(a)->value.d;
972: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 973: if(va<vb)
974: return -1;
975: else if(va>vb)
976: return +1;
977: else
978: return 0;
979: }
1.182 paf 980: static void _sort(Request& r, MethodParams& params) {
981: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 982:
1.182 paf 983: bool reverse=params.count()>1/*..[desc|asc|]*/?
984: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 985: false; // default=asc
1.32 paf 986:
1.182 paf 987: Table& old_table=GET_SELF(r, VTable).table();
988: Table& new_table=*new Table(old_table.columns());
1.34 paf 989:
1.182 paf 990: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 991: int i;
992:
993: // calculate key values
994: bool key_values_are_strings=true;
1.182 paf 995: int old_count=old_table.count();
996: for(i=0; i<old_count; i++) {
1.101 parser 997: old_table.set_current(i);
1.32 paf 998: // calculate key value
1.182 paf 999: seq[i].row=old_table[i];
1.287 moko 1000: Value& value=r.process_to_value(key_maker);
1.34 paf 1001: if(i==0) // determining key values type by first one
1002: key_values_are_strings=value.is_string();
1003:
1004: if(key_values_are_strings)
1005: seq[i].value.c_str=value.as_string().cstr();
1006: else
1.287 moko 1007: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 1008: }
1.265 misha 1009:
1010: // @todo: handle this elsewhere
1011: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
1012: for(i=0; i<old_count; i++)
1013: if(*seq[i].value.c_str)
1014: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
1015: }
1016:
1.266 misha 1017: // sort keys
1.295 moko 1018: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1019:
1.34 paf 1020: // reorder table as they require in 'seq'
1.182 paf 1021: for(i=0; i<old_count; i++)
1022: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1023:
1024: delete[] seq;
1.32 paf 1025:
1.116 parser 1026: // replace any previous table value
1.182 paf 1027: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1028: }
1029:
1.176 paf 1030: #ifndef DOXYGEN
1.182 paf 1031: struct Expression_is_true_info {
1.176 paf 1032: Request* r;
1033: Value* expression_code;
1034: };
1035: #endif
1.275 misha 1036:
1.191 paf 1037: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1038: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1039: }
1.275 misha 1040:
1041: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1042: Value& expression_code=params.as_junction(0, "must be expression");
1.275 misha 1043: const size_t options_index=1;
1044: Table::Action_options o=get_action_options(r, params, options_index, table);
1045: check_option_param(o.defined, params, options_index, "locate by expression only has parameters: expression and, maybe, options");
1.145 paf 1046:
1.182 paf 1047: Expression_is_true_info info={&r, &expression_code};
1048: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1049: }
1.275 misha 1050:
1051: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1052: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1053: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.275 misha 1054: const size_t options_index=2;
1055: Table::Action_options o=get_action_options(r, params, options_index, table);
1056: check_option_param(o.defined, params, options_index, "locate by name has parameters: name, value and, maybe, options");
1057:
1.182 paf 1058: return table.locate(name, value, o);
1059: }
1.275 misha 1060:
1.182 paf 1061: static void _locate(Request& r, MethodParams& params) {
1062: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1063:
1.291 moko 1064: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1065: _locate_expression(table, r, params) :
1066: _locate_name_value(table, r, params);
1.249 misha 1067: r.write_no_lang(VBool::get(result));
1.145 paf 1068: }
1.182 paf 1069:
1070:
1.191 paf 1071: static void _flip(Request& r, MethodParams&) {
1.182 paf 1072: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1073: Table& new_table=*new Table(0);
1.182 paf 1074: if(size_t old_count=old_table.count())
1.270 misha 1075: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table[0]->count())
1.182 paf 1076: for(size_t column=0; column<old_cols; column++) {
1077: Table::element_type new_row(new ArrayString(old_count));
1078: for(size_t i=0; i<old_count; i++) {
1079: Table::element_type old_row=old_table[i];
1080: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1081: }
1.182 paf 1082: new_table+=new_row;
1.39 paf 1083: }
1084:
1.182 paf 1085: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1086: }
1087:
1.293 misha 1088: static void _foreach(Request& r, MethodParams& params) {
1089: InCycle temp(r);
1090:
1091: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1092: const String& value_name=params.as_string(1, "value-var name must be string");
1093:
1094: Value& body_code=params.as_junction(2, "body must be code");
1095:
1096: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1097:
1098: Table& table=GET_SELF(r, VTable).table();
1099: size_t saved_current=table.current();
1100: size_t size=table.count();
1101:
1102: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1103: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1104:
1105: Value* var_context=r.get_method_frame()->caller();
1106:
1107: if(delim_maybe_code) { // delimiter set
1108: bool need_delim=false;
1109: for(size_t row=0; row<size; row++) {
1110: table.set_current(row);
1111:
1112: if(rownum_var_name)
1.296 moko 1113: var_context->put_element(*rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1114: if(value_var_name)
1.296 moko 1115: var_context->put_element(*value_var_name, new VTable(&table));
1.293 misha 1116:
1117: StringOrValue sv_processed=r.process(body_code);
1118: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1119:
1120: const String* s_processed=sv_processed.get_string();
1121: if(s_processed && !s_processed->is_empty()) { // we have body
1122: if(need_delim) // need delim & iteration produced string?
1123: r.write_pass_lang(r.process(*delim_maybe_code));
1124: else
1125: need_delim=true;
1126: }
1127:
1128: r.write_pass_lang(sv_processed);
1129:
1130: if(lskip==Request::SKIP_BREAK)
1131: break;
1132: }
1133: } else {
1134: for(size_t row=0; row<size; row++) {
1135: table.set_current(row);
1136:
1137: if(rownum_var_name)
1.296 moko 1138: var_context->put_element(*rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1139: if(value_var_name)
1.296 moko 1140: var_context->put_element(*value_var_name, new VTable(&table));
1.293 misha 1141:
1142: r.process_write(body_code);
1143: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1144:
1145: if(lskip==Request::SKIP_BREAK)
1146: break;
1147: }
1148: }
1149: table.set_current(saved_current);
1150: }
1151:
1.182 paf 1152: static void _append(Request& r, MethodParams& params) {
1153: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 1154: const String& string=r.process_to_string(params[0]);
1.41 paf 1155:
1156: // parse cells
1.182 paf 1157: Table::element_type row=new ArrayString;
1158: size_t pos_after=0;
1159: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1160:
1.182 paf 1161: GET_SELF(r, VTable).table()+=row;
1.41 paf 1162: }
1163:
1.182 paf 1164: static void join_named_row(Table& src, Table* dest) {
1165: Table::columns_type dest_columns=dest->columns();
1166: size_t dest_columns_count=dest_columns->count();
1167: Table::element_type dest_row(new ArrayString(dest_columns_count));
1168: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1169: const String* src_item=src.item(*dest_columns->get(dest_column));
1170: *dest_row+=src_item?src_item:new String;
1171: }
1172: *dest+=dest_row;
1173: }
1174: static void join_nameless_row(Table& src, Table* dest) {
1175: *dest+=src[src.current()];
1176: }
1177: static void _join(Request& r, MethodParams& params) {
1.288 misha 1178: Table& src=*params.as_table(0, "source");
1.176 paf 1179:
1.268 misha 1180: Table::Action_options o=get_action_options(r, params, 1, src);
1.288 misha 1181: check_option_param(o.defined, params, 1, "invalid extra parameter");
1.42 paf 1182:
1.182 paf 1183: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1184: if(&src == &dest)
1.226 misha 1185: throw Exception(PARSER_RUNTIME,
1.182 paf 1186: 0,
1.42 paf 1187: "source and destination are same table");
1188:
1.193 paf 1189: if(dest.columns()) // dest is named
1.182 paf 1190: src.table_for_each(join_named_row, &dest, o);
1191: else // dest is nameless
1192: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1193: }
1194:
1.94 parser 1195: #ifndef DOXYGEN
1.169 paf 1196: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1197: ArrayString& columns;
1.218 paf 1198: int columns_count;
1.182 paf 1199: ArrayString* row;
1.94 parser 1200: public:
1.182 paf 1201: Table* table;
1202: public:
1203: Table_sql_event_handlers() :
1204: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1205: }
1206:
1.279 misha 1207: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1208: try {
1.274 moko 1209: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1210: return false;
1211: } catch(...) {
1212: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1213: return true;
1214: }
1215: }
1216: bool before_rows(SQL_Error& error) {
1217: try {
1.182 paf 1218: table=new Table(&columns);
1.218 paf 1219: columns_count=columns.count();
1.170 paf 1220: return false;
1221: } catch(...) {
1222: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1223: return true;
1224: }
1225: }
1226: bool add_row(SQL_Error& error) {
1227: try {
1.218 paf 1228: *table+=row=new ArrayString(columns_count);
1.170 paf 1229: return false;
1230: } catch(...) {
1231: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1232: return true;
1233: }
1234: }
1.279 misha 1235: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1236: try {
1.292 misha 1237: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1238: return false;
1239: } catch(...) {
1240: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1241: return true;
1242: }
1.94 parser 1243: }
1244: };
1245: #endif
1.204 paf 1246:
1247: static void marshal_bind(
1248: HashStringValue::key_type aname,
1249: HashStringValue::value_type avalue,
1250: SQL_Driver::Placeholder** pptr)
1251: {
1252: SQL_Driver::Placeholder& ph=**pptr;
1253: ph.name=aname.cstr();
1.261 misha 1254: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1255: ph.is_null=avalue->get_class()==void_class;
1256: ph.were_updated=false;
1257:
1258: (*pptr)++;
1259: }
1260:
1261: // not static, used elsewhere
1262: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1263: int hash_count=hash.count();
1264: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1265: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1266: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1267: return hash_count;
1268: }
1269:
1270: // not static, used elsewhere
1271: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1272: SQL_Driver::Placeholder* ph=placeholders;
1273: for(int i=0; i<placeholder_count; i++, ph++)
1274: if(ph->were_updated) {
1275: Value* value;
1276: if(ph->is_null)
1.248 misha 1277: value=VVoid::get();
1.204 paf 1278: else
1.256 misha 1279: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1280: hash.put(ph->name, value);
1281: }
1282: }
1283:
1.182 paf 1284: static void _sql(Request& r, MethodParams& params) {
1285: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1286:
1.204 paf 1287: HashStringValue* bind=0;
1.244 misha 1288: ulong limit=SQL_NO_LIMIT;
1.100 parser 1289: ulong offset=0;
1.281 misha 1290: if(params.count()>1)
1.288 misha 1291: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1292: int valid_options=0;
1293: if(Value* vbind=options->get(sql_bind_name)) {
1294: valid_options++;
1295: bind=vbind->get_hash();
1296: }
1297: if(Value* vlimit=options->get(sql_limit_name)) {
1298: valid_options++;
1299: limit=(ulong)r.process_to_value(*vlimit).as_double();
1300: }
1301: if(Value* voffset=options->get(sql_offset_name)) {
1302: valid_options++;
1303: offset=(ulong)r.process_to_value(*voffset).as_double();
1304: }
1305: if(valid_options!=options->count())
1306: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1307: }
1.49 paf 1308:
1.204 paf 1309: SQL_Driver::Placeholder* placeholders=0;
1310: uint placeholders_count=0;
1311: if(bind)
1312: placeholders_count=marshal_binds(*bind, placeholders);
1313:
1.182 paf 1314: Temp_lang temp_lang(r, String::L_SQL);
1315: const String& statement_string=r.process_to_string(statement);
1.262 misha 1316: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1317:
1.182 paf 1318: Table_sql_event_handlers handlers;
1.294 moko 1319:
1.182 paf 1320: r.connection()->query(
1.203 paf 1321: statement_cstr,
1.208 paf 1322: placeholders_count, placeholders,
1.203 paf 1323: offset, limit,
1.160 paf 1324: handlers,
1325: statement_string);
1.135 paf 1326:
1.204 paf 1327: if(bind)
1328: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1329:
1.182 paf 1330: Table& result=
1331: handlers.table?*handlers.table: // query resulted in table? return it
1332: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1333:
1334: // replace any previous table value
1.182 paf 1335: GET_SELF(r, VTable).set_table(result);
1.49 paf 1336: }
1337:
1.233 misha 1338: static void _columns(Request& r, MethodParams& params) {
1339: const String* column_column_name;
1340: if(params.count()>0)
1341: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1342: else
1343: column_column_name=new String("column");
1.88 parser 1344:
1.182 paf 1345: Table::columns_type result_columns(new ArrayString);
1.233 misha 1346: *result_columns+=column_column_name;
1.182 paf 1347: Table& result_table=*new Table(result_columns);
1.88 parser 1348:
1.182 paf 1349: Table& source_table=GET_SELF(r, VTable).table();
1350: if(Table::columns_type source_columns=source_table.columns()) {
1351: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1352: Table::element_type result_row(new ArrayString);
1353: *result_row+=i.next();
1354: result_table+=result_row;
1.88 parser 1355: }
1356: }
1357:
1.182 paf 1358: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1359: }
1360:
1.182 paf 1361: static void _select(Request& r, MethodParams& params) {
1.231 misha 1362: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1363:
1.182 paf 1364: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1365:
1.277 moko 1366: int limit=source_table.count();
1.282 misha 1367: int offset=0;
1368: bool reverse=false;
1.278 moko 1369:
1.281 misha 1370: if(params.count()>1)
1371: if(HashStringValue* options=params.as_hash(1)) {
1372: int valid_options=0;
1373: if(Value* vlimit=options->get(sql_limit_name)) {
1374: valid_options++;
1375: limit=r.process_to_value(*vlimit).as_int();
1376: }
1377: if(Value* voffset=options->get(sql_offset_name)) {
1378: valid_options++;
1379: offset=r.process_to_value(*voffset).as_int();
1380: }
1381: if(Value* vreverse=options->get(table_reverse_name)) {
1382: valid_options++;
1383: reverse=r.process_to_value(*vreverse).as_bool();
1384: }
1385: if(valid_options!=options->count())
1.288 misha 1386: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1387: }
1388:
1389: Table& result_table=*new Table(source_table.columns());
1.277 moko 1390:
1.283 misha 1391: size_t size=source_table.count();
1392: if(offset<0)
1393: offset+=size;
1.284 misha 1394: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1395: size_t saved_current=source_table.current();
1396: size_t appended=0;
1397:
1398: if(reverse){
1399: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1400: source_table.set_current(row);
1401:
1402: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1403:
1404: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1405: result_table+=source_table[row];
1406: if(row==0) break;
1407: }
1408: } else {
1409: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1410: source_table.set_current(row);
1.148 paf 1411:
1.282 misha 1412: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1413:
1.282 misha 1414: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1415: result_table+=source_table[row];
1416: }
1.277 moko 1417: }
1.282 misha 1418: source_table.set_current(saved_current);
1.148 paf 1419: }
1420:
1.182 paf 1421: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1422: }
1423:
1.66 paf 1424: // constructor
1425:
1.182 paf 1426: MTable::MTable(): Methoded("table") {
1.142 paf 1427: // ^table::create{data}
1428: // ^table::create[nameless]{data}
1429: // ^table::create[table]
1.236 misha 1430: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1431: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1432: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1433:
1.142 paf 1434: // ^table::load[file]
1435: // ^table::load[nameless;file]
1.168 paf 1436: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1437:
1438: // ^table.save[file]
1439: // ^table.save[nameless;file]
1.188 paf 1440: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1441:
1.224 misha 1442: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1443:
1.297 ! moko 1444: // ^table.csv-string[]
! 1445: // ^table.csv-string[nameless]
! 1446: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
! 1447: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
! 1448:
1.6 paf 1449: // ^table.count[]
1.280 misha 1450: // ^table.count[rows]
1451: // ^table.count[columns]
1452: // ^table.count[cells]
1453: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1454:
1455: // ^table.line[]
1.66 paf 1456: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1457:
1.10 paf 1458: // ^table.offset[]
1.133 paf 1459: // ^table.offset(offset)
1460: // ^table.offset[cur|set](offset)
1461: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1462:
1.10 paf 1463: // ^table.menu{code}
1464: // ^table.menu{code}[delim]
1.66 paf 1465: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1466:
1.239 misha 1467: // ^table.hash[key field name]
1468: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1469: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1470:
1.102 parser 1471: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1472: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1473: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1474:
1.36 paf 1475: // ^table.locate[field;value]
1.176 paf 1476: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1477:
1478: // ^table.flip[]
1.66 paf 1479: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1480:
1.293 misha 1481: // ^table.foreach[row-num;value]{code}
1482: // ^table.foreach[row-num;value]{code}[delim]
1483: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1484:
1.41 paf 1485: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1486: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1487:
1.157 paf 1488: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1489: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1490:
1491:
1.239 misha 1492: // ^table::sql[query]
1493: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1494: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1495:
1.239 misha 1496: // ^table.columns[[column name]]
1.233 misha 1497: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1498:
1499: // ^table.select(expression) = table
1.277 moko 1500: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1501: }
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