Annotation of parser3/src/classes/table.C, revision 1.320
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:
1.320 ! moko 25: volatile const char * IDENT_TABLE_C="$Id: table.C,v 1.319 2016/09/06 22:19:47 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)
114: throw Exception(PARSER_RUNTIME, sseparator, "separator must be one character long");
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)
1.318 moko 125: throw Exception(PARSER_RUNTIME, sencloser, "encloser must be one character long");
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:
1.182 paf 135: static void _create(Request& r, MethodParams& params) {
1.157 paf 136: // clone/copy part?
1.182 paf 137: if(Table *source=params[0].get_table()) {
1.268 misha 138: Table::Action_options o=get_action_options(r, params, 1, *source);
1.303 moko 139: if(params.count()>2)
140: throw Exception(PARSER_RUNTIME, 0, "too many parameters");
1.182 paf 141: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 142: return;
143: }
1.142 paf 144:
1.236 misha 145: size_t data_param_index=0;
146: bool nameless=false;
147:
148: if(params.count()>1) {
149: if(params[0].is_string()){ // can be nameless only
150: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
151: if(snameless!="nameless")
1.318 moko 152: throw Exception(PARSER_RUNTIME, &snameless, "table::create called with more then 1 param, first param may be only 'nameless'");
1.236 misha 153: nameless=true;
154: data_param_index++;
155: }
156: }
157:
158: HashStringValue *options=0;
1.319 moko 159: TableControlChars control_chars;
1.236 misha 160:
161: size_t options_param_index=data_param_index+1;
162: if(
163: options_param_index<params.count()
1.288 misha 164: && (options=params.as_hash(options_param_index))
1.236 misha 165: ) {
166: // cloning, so that we could change
167: options=new HashStringValue(*options);
1.319 moko 168: control_chars.load(*options);
169: if(control_chars.encloser){
1.318 moko 170: throw Exception(PARSER_RUNTIME, 0, "encloser not supported for table::create yet");
1.236 misha 171: }
172: }
173:
174: // data
1.182 paf 175: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
176: const String& data=
1.301 misha 177: r.process_to_string(params.as_junction(data_param_index, "body must be table or code"));
1.44 paf 178:
179: // parse columns
1.182 paf 180: size_t raw_pos_after=0;
181: Table::columns_type columns;
1.236 misha 182:
183: if(nameless){
1.182 paf 184: columns=Table::columns_type(0); // nameless
1.21 paf 185: } else {
1.182 paf 186: columns=Table::columns_type(new ArrayString);
1.44 paf 187:
1.182 paf 188: ArrayString head;
189: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
190: if(head.count()) {
191: size_t col_pos_after=0;
1.285 misha 192: if(head[0]->is_empty())
193: *columns += new String();
194: else
1.319 moko 195: head[0]->split(*columns, col_pos_after, *control_chars.sseparator, String::L_AS_IS);
1.182 paf 196: }
1.44 paf 197: }
198:
1.182 paf 199: Table& table=*new Table(columns);
1.44 paf 200: // parse cells
1.182 paf 201:
202: ArrayString rows;
203: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
204: Array_iterator<const String*> i(rows);
1.98 parser 205: while(i.has_next()) {
1.182 paf 206: Table::element_type row(new ArrayString);
1.252 misha 207: const String& string=*i.next();
1.118 parser 208: // remove comment lines
1.252 misha 209: if(string.is_empty())
1.44 paf 210: continue;
211:
1.182 paf 212: size_t col_pos_after=0;
1.319 moko 213: string.split(*row, col_pos_after, *control_chars.sseparator, String::L_AS_IS);
1.182 paf 214: table+=row;
1.17 paf 215: }
1.1 paf 216:
1.44 paf 217: // replace any previous table value
1.182 paf 218: GET_SELF(r, VTable).set_table(table);
1.44 paf 219: }
220:
1.187 paf 221: struct lsplit_result {
222: char* piece;
223: char delim;
224:
225: operator bool() { return piece!=0; }
226: };
227:
1.320 ! moko 228: inline lsplit_result lsplit(char* string, const char* delims) {
1.187 paf 229: lsplit_result result;
1.273 misha 230: if(string) {
1.187 paf 231: if(char* v=strpbrk(string, delims)) {
232: result.delim=*v;
233: *v=0;
234: result.piece=v+1;
235: return result;
236: }
1.273 misha 237: }
1.187 paf 238: result.piece=0;
239: result.delim=0;
1.273 misha 240: return result;
1.187 paf 241: }
242:
1.320 ! moko 243: inline lsplit_result lsplit(char* *string_ref, const char* delims) {
1.273 misha 244: lsplit_result result;
1.187 paf 245: result.piece=*string_ref;
1.320 ! moko 246: lsplit_result next=lsplit(*string_ref, delims);
1.187 paf 247: result.delim=next.delim;
248: *string_ref=next.piece;
1.273 misha 249: return result;
1.187 paf 250: }
251:
1.320 ! moko 252: static lsplit_result lsplit(char** string_ref, const char* delims, char encloser) {
1.187 paf 253: lsplit_result result;
254:
1.273 misha 255: if(char* string=*string_ref) {
1.187 paf 256: if(encloser && *string==encloser) {
1.273 misha 257: string++;
1.187 paf 258:
259: char *read;
260: char *write;
261: write=read=string;
262: char c;
1.290 moko 263: // we are enclosed, searching for second encloser
264: while(c=*read++) {
1.187 paf 265: if(c==encloser) {
1.290 moko 266: if(*read==encloser) // double-encloser stands for encloser
1.187 paf 267: read++;
1.290 moko 268: else
269: break; // note: skipping encloser
1.187 paf 270: }
271: *write++=c;
272: }
1.290 moko 273: // we are no longer enclosed, searching for delimiter, skipping extra enclosers
274: while(c=*read++) {
1.320 ! moko 275: if(c==delims[0] || c==delims[1]) {
1.290 moko 276: result.delim=c;
277: break;
278: } else if(c!=encloser)
279: *write++=c;
280: }
1.187 paf 281: *write=0; // terminate
282: *string_ref=c? read: 0;
283: result.piece=string;
284: return result;
285: } else
1.320 ! moko 286: return lsplit(string_ref, delims);
1.273 misha 287: }
1.187 paf 288: result.piece=0;
1.273 misha 289: return result;
1.187 paf 290: }
291:
292: static void skip_empty_and_comment_lines( char** data_ref ) {
293: if(char *data=*data_ref) {
294: while( char c=*data ) {
295: if( c== '\n' || c == '#' ) {
296: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 297: if(!(*data_ref=data))
298: break;
1.187 paf 299: continue;
300: }
301: break;
302: }
303: }
304: }
305:
1.273 misha 306: static void skip_empty_lines( char** data_ref ) {
307: if(char *data=*data_ref) {
308: while( char c=*data ) {
309: if( c== '\n' ) {
310: /*nowhere=*/getrow(&data); // remove empty lines
311: if(!(*data_ref=data))
312: break;
313: continue;
314: }
315: break;
316: }
317: }
318: }
319:
320: typedef void (*Skip_lines_action)(char** data_ref);
321:
1.182 paf 322: static void _load(Request& r, MethodParams& params) {
1.232 misha 323: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 324: int filename_param_index=0;
325: bool nameless=first_param=="nameless";
326: if(nameless)
327: filename_param_index++;
1.182 paf 328: size_t options_param_index=filename_param_index+1;
1.186 paf 329:
330: HashStringValue *options=0;
1.319 moko 331: TableControlChars control_chars;
1.186 paf 332: if(options_param_index<params.count()
1.288 misha 333: && (options=params.as_hash(options_param_index))) {
1.186 paf 334: // cloning, so that we could change [to simplify checks on params inside file_read_text
335: options=new HashStringValue(*options);
1.319 moko 336: control_chars.load(*options);
1.186 paf 337: }
338:
1.44 paf 339: // loading text
1.247 misha 340: char *data=file_load_text(r,
1.232 misha 341: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 342: true,
1.186 paf 343: options
1.168 paf 344: );
1.44 paf 345:
1.319 moko 346: Skip_lines_action skip_lines_action = (control_chars.separator=='#' || control_chars.encloser=='#') ? skip_empty_lines : skip_empty_and_comment_lines;
1.273 misha 347:
1.1 paf 348: // parse columns
1.182 paf 349: Table::columns_type columns;
1.168 paf 350: if(nameless) {
1.182 paf 351: columns=Table::columns_type(0); // nameless
1.1 paf 352: } else {
1.182 paf 353: columns=Table::columns_type(new ArrayString);
1.1 paf 354:
1.273 misha 355: skip_lines_action(&data);
1.320 ! moko 356: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.256 misha 357: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 358: if(sr.delim=='\n')
359: break;
1.139 paf 360: }
1.1 paf 361: }
1.187 paf 362:
363: Table& table=*new Table(columns);
1.219 paf 364: int columns_count=columns? columns->count(): 0;
1.1 paf 365:
366: // parse cells
1.218 paf 367: Table::element_type row(new ArrayString(columns_count));
1.273 misha 368: skip_lines_action(&data);
1.320 ! moko 369: while( lsplit_result sr=lsplit(&data, control_chars.separators, control_chars.encloser) ) {
1.201 paf 370: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
371: break;
1.256 misha 372: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 373: if(sr.delim=='\n') {
374: table+=row;
1.218 paf 375: row=new ArrayString(columns_count);
1.273 misha 376: skip_lines_action(&data);
1.1 paf 377: }
1.187 paf 378: }
379: // last line [if without \n]
380: if(row->count())
1.1 paf 381: table+=row;
1.187 paf 382:
1.1 paf 383: // replace any previous table value
1.182 paf 384: GET_SELF(r, VTable).set_table(table);
1.1 paf 385: }
1.2 paf 386:
1.297 moko 387: #ifdef USE_STRINGSTREAM
1.269 misha 388: #include "gc_allocator.h"
389:
390: typedef std::basic_stringstream<char, std::char_traits<char>, gc_allocator<char> > pa_stringstream;
391: typedef std::basic_string<char, std::char_traits<char>, gc_allocator<char> > pa_string;
392:
1.298 moko 393: static void enclose( pa_stringstream& to, const String* from, char encloser ) {
1.297 moko 394: if(from){
1.257 misha 395: to<<encloser;
1.188 paf 396: // while we have 'encloser'...
1.189 paf 397: size_t pos_after=0;
1.297 moko 398: for( size_t pos_before; (pos_before=from->pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
1.220 paf 399: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 400: to<<from->mid(pos_after, pos_before).cstr();
1.257 misha 401: to<<encloser; // doubling encloser
1.188 paf 402: }
403: // last piece
1.297 moko 404: size_t from_length=from->length();
1.188 paf 405: if(pos_after<from_length)
1.297 moko 406: to<<from->mid(pos_after, from_length).cstr();
407: to<<encloser;
408: } else {
409: to<<encloser<<encloser;
410: }
411: }
412:
1.319 moko 413: static void table_to_csv(pa_stringstream& result, Table& table, TableControlChars& control_chars, bool output_column_names) {
1.297 moko 414: if(output_column_names) {
415: if(table.columns()) { // named table
1.319 moko 416: if(control_chars.encloser){
1.297 moko 417: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.319 moko 418: enclose( result, i.next(), control_chars.encloser );
1.297 moko 419: if(i.has_next())
1.319 moko 420: result<<control_chars.separator;
1.297 moko 421: }
422: } else {
423: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
424: result<<i.next()->cstr();
425: if(i.has_next())
1.319 moko 426: result<<control_chars.separator;
1.297 moko 427: }
428: }
429: } else { // nameless table [we were asked to output column names]
430: if(int lsize=table.count()?table[0]->count():0)
431: for(int column=0; column<lsize; column++) {
1.319 moko 432: if(control_chars.encloser) {
433: result<<control_chars.encloser<<column<<control_chars.encloser;
1.297 moko 434: } else {
435: result<<column;
436: }
437: if(column<lsize-1){
1.319 moko 438: result<<control_chars.separator;
1.297 moko 439: }
440: }
441: else
442: result<<"empty nameless table";
443: }
444: result<<'\n';
445: }
1.188 paf 446:
1.297 moko 447: // process data lines
448: Array_iterator<ArrayString*> i(table);
1.319 moko 449: if(control_chars.encloser){
1.297 moko 450: while(i.has_next()) {
451: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.319 moko 452: enclose( result, c.next(), control_chars.encloser );
1.297 moko 453: if(c.has_next())
1.319 moko 454: result<<control_chars.separator;
1.297 moko 455: }
456: result<<'\n';
457: }
458: } else {
459: while(i.has_next()) {
460: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
461: result<<c.next()->cstr();
462: if(c.has_next())
1.319 moko 463: result<<control_chars.separator;
1.297 moko 464: }
465: result<<'\n';
466: }
467: }
1.188 paf 468: }
469:
1.241 misha 470: #else
471:
1.298 moko 472: void enclose( String& to, const String* from, char encloser, const String* sencloser ) {
1.297 moko 473: if(from){
1.257 misha 474: to<<*sencloser;
1.224 misha 475: // while we have 'encloser'...
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) {
1.224 misha 478: pos_before++; // including first encloser (and skipping it for next pos)
1.297 moko 479: to<<from->mid(pos_after, pos_before);
1.257 misha 480: to<<*sencloser; // doubling encloser
1.224 misha 481: }
482: // last piece
1.297 moko 483: size_t from_length=from->length();
1.224 misha 484: if(pos_after<from_length)
1.297 moko 485: to<<from->mid(pos_after, from_length);
1.257 misha 486: to<<*sencloser;
1.297 moko 487: } else {
488: to<<*sencloser<<*sencloser;
489: }
1.224 misha 490: }
491:
1.319 moko 492: static void table_to_csv(String& 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, control_chars.sencloser );
1.297 moko 498: if(i.has_next())
1.319 moko 499: result<<*control_chars.sseparator;
1.297 moko 500: }
501: } else {
502: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
503: result<<*i.next();
504: if(i.has_next())
1.319 moko 505: result<<*control_chars.sseparator;
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.sencloser<<String::Body::Format(column)<<*control_chars.sencloser;
1.298 moko 513: } else {
514: result<<String::Body::Format(column);
515: }
516: if(column<lsize-1){
1.319 moko 517: result<<*control_chars.sseparator;
1.298 moko 518: }
1.297 moko 519: }
520: else
521: result.append_help_length("empty nameless table", 0, String::L_CLEAN);
522: }
523: result.append_know_length("\n", 1, String::L_CLEAN);
524: }
525:
526: // 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, control_chars.sencloser );
1.297 moko 532: if(c.has_next())
1.319 moko 533: result<<*control_chars.sseparator;
1.297 moko 534: }
535: result.append_know_length("\n", 1, String::L_CLEAN);
536: }
537: } else {
538: while(i.has_next()) {
539: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
540: result<<*c.next();
541: if(c.has_next())
1.319 moko 542: result<<*control_chars.sseparator;
1.297 moko 543: }
544: result.append_know_length("\n", 1, String::L_CLEAN);
545: }
546: }
547: }
1.257 misha 548: #endif // don't use stringstream
1.241 misha 549:
1.297 moko 550:
1.241 misha 551: static void _save(Request& r, MethodParams& params) {
1.237 misha 552: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 553: size_t param_index=1;
554:
555: bool do_append=false;
556: bool output_column_names=true;
557:
558: // mode?
559: if(first_arg=="append")
560: do_append=true;
561: else if(first_arg=="nameless")
562: output_column_names=false;
563: else
564: --param_index;
565:
1.232 misha 566: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 567: String file_spec=r.absolute(file_name);
568:
569: if(do_append && file_exist(file_spec))
570: output_column_names=false;
1.188 paf 571:
1.319 moko 572: TableControlChars control_chars;
1.281 misha 573: if(param_index<params.count())
1.288 misha 574: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 575: int valid_options=control_chars.load(*options);
1.281 misha 576: if(valid_options!=options->count())
577: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.222 paf 578: }
1.281 misha 579:
1.188 paf 580: if(param_index<params.count())
1.318 moko 581: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless or append)");
1.22 paf 582:
1.182 paf 583: Table& table=GET_SELF(r, VTable).table();
1.31 paf 584:
1.297 moko 585: #ifdef USE_STRINGSTREAM
1.269 misha 586: pa_stringstream ost(std::stringstream::out);
1.257 misha 587:
1.319 moko 588: table_to_csv(ost, table, control_chars, output_column_names);
1.31 paf 589:
590: // write
1.269 misha 591: pa_string data=ost.str();
1.257 misha 592: const char* data_cstr=data.c_str();
1.267 misha 593: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.241 misha 594: #else
1.257 misha 595: String sdata;
1.224 misha 596:
1.319 moko 597: table_to_csv(sdata, table, control_chars, output_column_names);
1.224 misha 598:
599: // write
1.257 misha 600: const char* data_cstr=sdata.cstr();
1.297 moko 601: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true /* as text */, do_append);
1.257 misha 602: if(*data_cstr) // not empty (when empty it's not heap memory)
603: pa_free((void*)data_cstr); // not needed anymore
1.297 moko 604: #endif
605: }
606:
607: static void _csv_string(Request& r, MethodParams& params) {
608: bool output_column_names=true;
609: size_t param_index=0;
610: if(params.count()>0 && params[0].is_string()) {
611: if(params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE)=="nameless") {
612: output_column_names=false;
613: param_index++;
614: } else {
1.318 moko 615: throw Exception(PARSER_RUNTIME, 0, "bad mode (must be nameless)");
1.297 moko 616: }
1.224 misha 617: }
1.240 misha 618:
1.319 moko 619: TableControlChars control_chars;
1.297 moko 620: if(param_index<params.count())
621: if(HashStringValue* options=params.as_hash(param_index++)) {
1.319 moko 622: int valid_options=control_chars.load(*options);
1.297 moko 623: if(valid_options!=options->count())
624: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
625: }
626:
627: Table& table=GET_SELF(r, VTable).table();
628:
629: #ifdef USE_STRINGSTREAM
630: pa_stringstream ost(std::stringstream::out);
631:
1.319 moko 632: table_to_csv(ost, table, control_chars, output_column_names);
1.297 moko 633:
634: r.write_no_lang(*new VString(*new String(pa_strdup(ost.str().c_str()), String::L_CLEAN)));
635: #else
636: String sdata;
637:
1.319 moko 638: table_to_csv(sdata, table, control_chars, output_column_names);
1.297 moko 639:
640: r.write_no_lang(*new VString(*new String(sdata.cstr(), String::L_CLEAN)));
641: #endif
1.224 misha 642: }
643:
1.280 misha 644: static void _count(Request& r, MethodParams& params) {
645: Table& table=GET_SELF(r, VTable).table();
646: size_t result=0;
647: if(params.count()) {
648: const String& param=params.as_string(0, PARAMETER_MUST_BE_STRING);
649: if(param == "columns")
1.310 moko 650: result = table.columns() ? table.columns()->count() : table.max_cells();
1.280 misha 651: else if(param == "cells")
652: result = table.count() ? table[table.current()]->count() : 0;
653: else if(param == "rows") // synonim for ^table.count[]
654: result = table.count();
655: else
656: throw Exception(PARSER_RUNTIME, ¶m, "parameter must be 'columns', 'cells' and 'rows' only");
657: } else
658: result = table.count();
659:
1.182 paf 660: r.write_no_lang(*new VInt(result));
1.6 paf 661: }
662:
1.182 paf 663: static void _line(Request& r, MethodParams&) {
664: int result=1+GET_SELF(r, VTable).table().current();
665: r.write_no_lang(*new VInt(result));
1.6 paf 666: }
667:
1.182 paf 668: static void _offset(Request& r, MethodParams& params) {
669: Table& table=GET_SELF(r, VTable).table();
670: if(params.count()) {
1.133 paf 671: bool absolute=false;
1.182 paf 672: if(params.count()>1) {
673: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 674: if(whence=="cur")
1.134 paf 675: absolute=false;
1.133 paf 676: else if(whence=="set")
1.134 paf 677: absolute=true;
1.133 paf 678: else
1.318 moko 679: throw Exception(PARSER_RUNTIME, &whence, "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 680: }
1.133 paf 681:
1.211 paf 682: int offset=params.as_int(params.count()-1, "offset must be expression", r);
683: table.offset(absolute, offset);
1.151 paf 684: } else
1.182 paf 685: r.write_no_lang(*new VInt(table.current()));
1.6 paf 686: }
687:
1.182 paf 688: static void _menu(Request& r, MethodParams& params) {
1.263 misha 689: InCycle temp(r);
1.221 paf 690:
1.182 paf 691: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 692:
1.182 paf 693: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 694:
1.182 paf 695: Table& table=GET_SELF(r, VTable).table();
1.293 misha 696: size_t saved_current=table.current();
1.7 paf 697:
1.251 misha 698: if(delim_maybe_code) { // delimiter set
1.250 misha 699: bool need_delim=false;
1.316 moko 700: for(size_t row=0; row<table.count(); row++) {
1.250 misha 701: table.set_current(row);
702:
703: StringOrValue sv_processed=r.process(body_code);
704: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
705:
706: const String* s_processed=sv_processed.get_string();
1.251 misha 707: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 708: if(need_delim) // need delim & iteration produced string?
709: r.write_pass_lang(r.process(*delim_maybe_code));
710: else
711: need_delim=true;
712: }
713:
714: r.write_pass_lang(sv_processed);
1.242 misha 715:
1.250 misha 716: if(lskip==Request::SKIP_BREAK)
717: break;
718: }
719: } else {
1.316 moko 720: for(size_t row=0; row<table.count(); row++) {
1.250 misha 721: table.set_current(row);
722:
723: r.process_write(body_code);
724: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
725:
726: if(lskip==Request::SKIP_BREAK)
727: break;
1.7 paf 728: }
729: }
1.99 parser 730: table.set_current(saved_current);
1.7 paf 731: }
732:
1.110 parser 733: #ifndef DOXYGEN
1.74 paf 734: struct Row_info {
1.166 paf 735: Request *r;
1.74 paf 736: Table *table;
1.182 paf 737: Value* key_code;
738: size_t key_field;
739: Array<int>* value_fields;
1.315 moko 740: Value* value_code;
1.182 paf 741: HashStringValue* hash;
1.174 paf 742: Table2hash_distint distinct;
1.182 paf 743: size_t row;
1.227 misha 744: Table2hash_value_type value_type;
1.74 paf 745: };
1.110 parser 746: #endif
1.182 paf 747: static void table_row_to_hash(Table::element_type row, Row_info *info) {
748: const String* key;
749: if(info->key_code) {
750: info->table->set_current(info->row++); // change context row
751: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 752: key=&sv_processed.as_string();
1.227 misha 753: } else {
1.182 paf 754: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 755: }
1.166 paf 756:
757: if(!key)
758: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 759:
1.243 misha 760: bool exist=false;
761: switch(info->value_type) {
762: case C_STRING: {
1.317 moko 763: if(info->value_fields->count()){
764: size_t index=info->value_fields->get(0);
765: exist=info->hash->put_dont_replace(*key, (index < row->count()) ? new VString(*row->get(index)) : VString::empty());
766: } else {
767: exist=info->hash->put_dont_replace(*key, VString::empty());
768: }
1.243 misha 769: break;
1.227 misha 770: }
1.243 misha 771: case C_HASH: {
1.182 paf 772: VHash* vhash=new VHash;
773: HashStringValue& hash=vhash->hash();
774: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
775: size_t value_field=i.next();
776: if(value_field<row->count())
1.314 moko 777: hash.put(*info->table->columns()->get(value_field), new VString(*row->get(value_field)));
1.174 paf 778: }
779:
1.227 misha 780: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 781: break;
1.174 paf 782: }
1.243 misha 783: case C_TABLE: {
784: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 785: Table* table;
1.227 misha 786: if(vtable) {
1.243 misha 787: if(info->distinct==D_ILLEGAL) {
788: exist=true;
789: break;
790: }
1.174 paf 791: table=vtable->get_table();
1.227 misha 792: } else {
1.174 paf 793: // no? creating table of same structure as source
1.179 paf 794: Table::Action_options table_options(0, 0);
1.182 paf 795: table=new Table(*info->table, table_options/*no rows, just structure*/);
796: info->hash->put(*key, new VTable(table));
1.174 paf 797: }
1.308 moko 798: Table::element_type row_copy(new ArrayString(row->count()));
799: row_copy->append(*row);
800: *table+=row_copy;
1.243 misha 801: break;
1.174 paf 802: }
1.315 moko 803: case C_CODE: {
804: if(!info->key_code)
805: info->table->set_current(info->row++); // change context row
806: exist=info->hash->put_dont_replace(*key, &info->r->process(*info->value_code).as_value());
807: break;
808: }
1.74 paf 809: }
1.227 misha 810: if(exist && info->distinct==D_ILLEGAL)
1.314 moko 811: throw Exception(PARSER_RUNTIME, key, "duplicate key");
1.74 paf 812: }
1.235 misha 813:
814: Table2hash_value_type get_value_type(Value& vvalue_type){
815: if(vvalue_type.is_string()) {
816: const String& svalue_type=*vvalue_type.get_string();
817: if(svalue_type == "table"){
818: return C_TABLE;
819: } else if (svalue_type == "string") {
820: return C_STRING;
821: } else if (svalue_type == "hash") {
822: return C_HASH;
823: } else {
1.314 moko 824: throw Exception(PARSER_RUNTIME, &svalue_type, "must be 'hash', 'table' or 'string'");
1.235 misha 825: }
826: } else {
1.314 moko 827: throw Exception(PARSER_RUNTIME, 0, "'type' must be string");
1.235 misha 828: }
829: }
830:
1.315 moko 831: static Table2hash_distint get_distinct(Value& vdistinct, Table2hash_value_type& value_type){
832: if(vdistinct.is_string()) {
833: const String& sdistinct=*vdistinct.get_string();
834: if(sdistinct!="tables")
835: throw Exception(PARSER_RUNTIME, &sdistinct, "must be 'tables' or true/false");
836: value_type=C_TABLE;
837: return D_FIRST;
838: }
839: return vdistinct.as_bool() ? D_FIRST : D_ILLEGAL;
840: }
841:
1.182 paf 842: static void _hash(Request& r, MethodParams& params) {
843: Table& self_table=GET_SELF(r, VTable).table();
844: VHash& result=*new VHash;
1.238 misha 845: if(Table::columns_type columns=self_table.columns()){
1.182 paf 846: if(columns->count()>0) {
1.174 paf 847: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 848: Table2hash_value_type value_type=C_HASH;
1.182 paf 849: int param_index=params.count()-1;
1.166 paf 850: if(param_index>0) {
1.315 moko 851:
852: if(params[1].get_junction())
853: value_type=C_CODE;
854:
855: 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 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++;
1.315 moko 860: distinct=get_distinct(r.process_to_value(*vdistinct_code), value_type);
1.166 paf 861: }
1.238 misha 862: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
863: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.314 moko 864: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.distinct[tables] and $.type[] together");
1.315 moko 865: if(value_type==C_CODE)
866: throw Exception(PARSER_RUNTIME, 0, "you can't specify $.type[] if value is code");
1.238 misha 867: valid_options++;
868: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
869: }
1.226 misha 870:
1.182 paf 871: if(valid_options!=options->count())
1.272 misha 872: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.163 paf 873: }
874: }
1.238 misha 875:
1.315 moko 876: if(param_index==2) // options were specified but not as hash
1.289 misha 877: throw Exception(PARSER_RUNTIME, 0, "options must be hash");
878:
1.182 paf 879: Array<int> value_fields;
1.315 moko 880: Value* value_code=0;
881:
1.238 misha 882: if(param_index==0){ // list of columns wasn't specified
883: if(value_type==C_STRING) // $.type[string]
1.314 moko 884: throw Exception(PARSER_RUNTIME, 0, "you must specify one value field with option $.type[string]");
1.238 misha 885:
886: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
887: value_fields+=i;
888:
1.315 moko 889: } else { // list of columns or code was specified
1.227 misha 890: if(value_type==C_TABLE)
1.314 moko 891: throw Exception(PARSER_RUNTIME, 0, "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
1.238 misha 892:
1.315 moko 893: Value& value_fields_param=params[1];
1.317 moko 894: if(value_fields_param.get_junction()){ // code specified
1.315 moko 895: value_code=&value_fields_param;
896: } else if(value_fields_param.is_string()) { // one column as string was specified
1.317 moko 897: const String &field_name=*value_fields_param.get_string();
898: if(!field_name.is_empty())
899: value_fields+=self_table.column_name2index(field_name, true);
1.238 misha 900: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
901: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
902: const String& value_field_name =*i.next()->get(0);
903: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 904: }
905: } else
1.315 moko 906: throw Exception(PARSER_RUNTIME, 0, "value field(s) must be string or table or code");
1.239 misha 907: }
1.74 paf 908:
1.227 misha 909: if(value_type==C_STRING && value_fields.count()!=1)
1.314 moko 910: throw Exception(PARSER_RUNTIME, 0, "you can specify only one value field with option $.type[string]");
1.182 paf 911:
912: {
913: Value* key_param=¶ms[0];
1.193 paf 914: Row_info info={
915: &r,
916: &self_table,
1.315 moko 917: /*key_code=*/key_param->get_junction() ? key_param : 0,
1.197 paf 918: /*key_field=*/0/*filled below*/,
1.193 paf 919: &value_fields,
1.315 moko 920: value_code,
1.193 paf 921: &result.hash(),
922: distinct,
1.227 misha 923: /*row=*/0,
924: value_type
1.193 paf 925: };
1.314 moko 926: info.key_field=(info.key_code ? -1 : self_table.column_name2index(key_param->as_string(), true));
1.182 paf 927:
928: int saved_current=self_table.current();
929: self_table.for_each(table_row_to_hash, &info);
930: self_table.set_current(saved_current);
1.207 paf 931:
932: result.extract_default();
1.182 paf 933: }
1.74 paf 934: }
1.238 misha 935: }
1.97 parser 936: r.write_no_lang(result);
1.74 paf 937: }
938:
1.110 parser 939: #ifndef DOXYGEN
1.78 paf 940: struct Table_seq_item {
1.182 paf 941: ArrayString* row;
1.34 paf 942: union {
1.182 paf 943: const char *c_str;
1.34 paf 944: double d;
945: } value;
1.32 paf 946: };
1.110 parser 947: #endif
1.34 paf 948: static int sort_cmp_string(const void *a, const void *b) {
949: return strcmp(
1.78 paf 950: static_cast<const Table_seq_item *>(a)->value.c_str,
951: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 952: );
953: }
954: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 955: double va=static_cast<const Table_seq_item *>(a)->value.d;
956: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 957: if(va<vb)
958: return -1;
959: else if(va>vb)
960: return +1;
961: else
962: return 0;
963: }
1.182 paf 964: static void _sort(Request& r, MethodParams& params) {
965: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 966:
1.182 paf 967: bool reverse=params.count()>1/*..[desc|asc|]*/?
968: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 969: false; // default=asc
1.32 paf 970:
1.182 paf 971: Table& old_table=GET_SELF(r, VTable).table();
972: Table& new_table=*new Table(old_table.columns());
1.34 paf 973:
1.182 paf 974: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 975: int i;
976:
977: // calculate key values
978: bool key_values_are_strings=true;
1.182 paf 979: int old_count=old_table.count();
980: for(i=0; i<old_count; i++) {
1.101 parser 981: old_table.set_current(i);
1.32 paf 982: // calculate key value
1.182 paf 983: seq[i].row=old_table[i];
1.287 moko 984: Value& value=r.process_to_value(key_maker);
1.34 paf 985: if(i==0) // determining key values type by first one
986: key_values_are_strings=value.is_string();
987:
988: if(key_values_are_strings)
989: seq[i].value.c_str=value.as_string().cstr();
990: else
1.287 moko 991: seq[i].value.d=value.as_expr_result().as_double();
1.32 paf 992: }
1.265 misha 993:
994: // @todo: handle this elsewhere
995: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
996: for(i=0; i<old_count; i++)
997: if(*seq[i].value.c_str)
998: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
999: }
1000:
1.266 misha 1001: // sort keys
1.295 moko 1002: qsort(seq, old_count, sizeof(Table_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 1003:
1.34 paf 1004: // reorder table as they require in 'seq'
1.182 paf 1005: for(i=0; i<old_count; i++)
1006: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
1007:
1008: delete[] seq;
1.32 paf 1009:
1.116 parser 1010: // replace any previous table value
1.182 paf 1011: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 1012: }
1013:
1.176 paf 1014: #ifndef DOXYGEN
1.182 paf 1015: struct Expression_is_true_info {
1.176 paf 1016: Request* r;
1017: Value* expression_code;
1018: };
1019: #endif
1.275 misha 1020:
1.191 paf 1021: static bool expression_is_true(Table&, Expression_is_true_info* info) {
1022: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 1023: }
1.275 misha 1024:
1025: static bool _locate_expression(Table& table, Request& r, MethodParams& params) {
1.182 paf 1026: Value& expression_code=params.as_junction(0, "must be expression");
1.303 moko 1027: Table::Action_options o=get_action_options(r, params, 1, table);
1028: if(params.count()>2)
1029: throw Exception(PARSER_RUNTIME, 0, "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 1030: Expression_is_true_info info={&r, &expression_code};
1031: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 1032: }
1.275 misha 1033:
1034: static bool _locate_name_value(Table& table, Request& r, MethodParams& params) {
1.182 paf 1035: const String& name=params.as_string(0, "column name must be string");
1.232 misha 1036: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.303 moko 1037: Table::Action_options o=get_action_options(r, params, 2, table);
1.182 paf 1038: return table.locate(name, value, o);
1039: }
1.275 misha 1040:
1.182 paf 1041: static void _locate(Request& r, MethodParams& params) {
1042: Table& table=GET_SELF(r, VTable).table();
1.72 paf 1043:
1.291 moko 1044: bool result=params[0].get_junction() || (params.count() == 1) ?
1.275 misha 1045: _locate_expression(table, r, params) :
1046: _locate_name_value(table, r, params);
1.249 misha 1047: r.write_no_lang(VBool::get(result));
1.145 paf 1048: }
1.182 paf 1049:
1050:
1.191 paf 1051: static void _flip(Request& r, MethodParams&) {
1.182 paf 1052: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 1053: Table& new_table=*new Table(0);
1.182 paf 1054: if(size_t old_count=old_table.count())
1.310 moko 1055: if(size_t old_cols=old_table.columns()?old_table.columns()->count():old_table.max_cells())
1.182 paf 1056: for(size_t column=0; column<old_cols; column++) {
1057: Table::element_type new_row(new ArrayString(old_count));
1058: for(size_t i=0; i<old_count; i++) {
1059: Table::element_type old_row=old_table[i];
1060: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 1061: }
1.182 paf 1062: new_table+=new_row;
1.39 paf 1063: }
1064:
1.182 paf 1065: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1066: }
1067:
1.293 misha 1068: static void _foreach(Request& r, MethodParams& params) {
1069: InCycle temp(r);
1070:
1071: const String& rownum_name=params.as_string(0, "rownum-var name must be string");
1072: const String& value_name=params.as_string(1, "value-var name must be string");
1073:
1074: Value& body_code=params.as_junction(2, "body must be code");
1075:
1076: Value* delim_maybe_code=params.count()>3?¶ms[3]:0;
1077:
1078: Table& table=GET_SELF(r, VTable).table();
1079: size_t saved_current=table.current();
1080:
1081: const String* rownum_var_name=rownum_name.is_empty()? 0 : &rownum_name;
1082: const String* value_var_name=value_name.is_empty()? 0 : &value_name;
1083:
1084: Value* var_context=r.get_method_frame()->caller();
1085:
1086: if(delim_maybe_code) { // delimiter set
1087: bool need_delim=false;
1.316 moko 1088: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1089: table.set_current(row);
1090:
1091: if(rownum_var_name)
1.299 moko 1092: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1093: if(value_var_name)
1.299 moko 1094: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1095:
1096: StringOrValue sv_processed=r.process(body_code);
1097: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1098:
1099: const String* s_processed=sv_processed.get_string();
1100: if(s_processed && !s_processed->is_empty()) { // we have body
1101: if(need_delim) // need delim & iteration produced string?
1102: r.write_pass_lang(r.process(*delim_maybe_code));
1103: else
1104: need_delim=true;
1105: }
1106:
1107: r.write_pass_lang(sv_processed);
1108:
1109: if(lskip==Request::SKIP_BREAK)
1110: break;
1111: }
1112: } else {
1.316 moko 1113: for(size_t row=0; row<table.count(); row++) {
1.293 misha 1114: table.set_current(row);
1115:
1116: if(rownum_var_name)
1.300 moko 1117: r.put_element(*var_context, *rownum_var_name, new VString(*new String(String::Body::Format(row), String::L_CLEAN)));
1.293 misha 1118: if(value_var_name)
1.300 moko 1119: r.put_element(*var_context, *value_var_name, new VTable(&table));
1.293 misha 1120:
1121: r.process_write(body_code);
1122: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1123:
1124: if(lskip==Request::SKIP_BREAK)
1125: break;
1126: }
1127: }
1128: table.set_current(saved_current);
1129: }
1130:
1.309 moko 1131: static void update_cell(HashStringValue::key_type aname, HashStringValue::value_type avalue, VTable *dest) {
1132: dest->put_element(String(aname, String::L_CLEAN), avalue); // new not required
1133: }
1134:
1135: inline Table::element_type row_from_string(Request& r, Value ¶m){
1136: if(!param.is_string() && !param.get_junction())
1137: throw Exception(PARSER_RUNTIME, 0, "row must be string, code or hash");
1138:
1.182 paf 1139: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.309 moko 1140: const String& string=r.process_to_string(param);
1.41 paf 1141:
1142: // parse cells
1.182 paf 1143: Table::element_type row=new ArrayString;
1144: size_t pos_after=0;
1145: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1146:
1.309 moko 1147: return row;
1.41 paf 1148: }
1149:
1.309 moko 1150: static void _append(Request& r, MethodParams& params) {
1151: VTable vtable=GET_SELF(r, VTable);
1152: Table& table=vtable.table();
1.306 moko 1153:
1.309 moko 1154: HashStringValue* hash=params[0].get_hash();
1155: if(hash){
1156: table+=new ArrayString();
1157: size_t saved_current=table.current();
1158: table.set_current(table.count()-1);
1159: hash->for_each<VTable*>(update_cell, &vtable);
1160: table.set_current(saved_current);
1161: } else {
1162: table+=row_from_string(r, params[0]);
1163: }
1164: }
1.306 moko 1165:
1.309 moko 1166: static void _insert(Request& r, MethodParams& params) {
1167: VTable vtable=GET_SELF(r, VTable);
1168: Table& table=vtable.table();
1169: HashStringValue* hash=params[0].get_hash();
1170: if(hash){
1171: table.insert(table.current(), new ArrayString());
1172: hash->for_each<VTable*>(update_cell, &vtable);
1173: } else {
1174: table.insert(table.current(), row_from_string(r, params[0]));
1175: }
1.306 moko 1176: }
1177:
1.311 moko 1178: static void _delete(Request& r, MethodParams&) {
1.307 moko 1179: Table& table=GET_SELF(r, VTable).table();
1180: table.remove_current();
1181: }
1182:
1.182 paf 1183: static void join_named_row(Table& src, Table* dest) {
1184: Table::columns_type dest_columns=dest->columns();
1185: size_t dest_columns_count=dest_columns->count();
1186: Table::element_type dest_row(new ArrayString(dest_columns_count));
1187: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1188: const String* src_item=src.item(*dest_columns->get(dest_column));
1189: *dest_row+=src_item?src_item:new String;
1190: }
1191: *dest+=dest_row;
1192: }
1193: static void join_nameless_row(Table& src, Table* dest) {
1194: *dest+=src[src.current()];
1195: }
1196: static void _join(Request& r, MethodParams& params) {
1.288 misha 1197: Table& src=*params.as_table(0, "source");
1.176 paf 1198:
1.268 misha 1199: Table::Action_options o=get_action_options(r, params, 1, src);
1.42 paf 1200:
1.182 paf 1201: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1202: if(&src == &dest)
1.318 moko 1203: throw Exception(PARSER_RUNTIME, 0, "source and destination are same table");
1.42 paf 1204:
1.193 paf 1205: if(dest.columns()) // dest is named
1.182 paf 1206: src.table_for_each(join_named_row, &dest, o);
1207: else // dest is nameless
1208: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1209: }
1210:
1.94 parser 1211: #ifndef DOXYGEN
1.169 paf 1212: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1213: ArrayString& columns;
1.218 paf 1214: int columns_count;
1.182 paf 1215: ArrayString* row;
1.94 parser 1216: public:
1.182 paf 1217: Table* table;
1218: public:
1219: Table_sql_event_handlers() :
1220: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1221: }
1222:
1.279 misha 1223: bool add_column(SQL_Error& error, const char *str, size_t ) {
1.170 paf 1224: try {
1.274 moko 1225: columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */);
1.170 paf 1226: return false;
1227: } catch(...) {
1228: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1229: return true;
1230: }
1231: }
1232: bool before_rows(SQL_Error& error) {
1233: try {
1.182 paf 1234: table=new Table(&columns);
1.218 paf 1235: columns_count=columns.count();
1.170 paf 1236: return false;
1237: } catch(...) {
1238: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1239: return true;
1240: }
1241: }
1242: bool add_row(SQL_Error& error) {
1243: try {
1.218 paf 1244: *table+=row=new ArrayString(columns_count);
1.170 paf 1245: return false;
1246: } catch(...) {
1247: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1248: return true;
1249: }
1250: }
1.279 misha 1251: bool add_row_cell(SQL_Error& error, const char* str, size_t ) {
1.170 paf 1252: try {
1.292 misha 1253: *row+=str?new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):&String::Empty;
1.170 paf 1254: return false;
1255: } catch(...) {
1256: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1257: return true;
1258: }
1.94 parser 1259: }
1260: };
1261: #endif
1.204 paf 1262:
1263: static void marshal_bind(
1264: HashStringValue::key_type aname,
1265: HashStringValue::value_type avalue,
1266: SQL_Driver::Placeholder** pptr)
1267: {
1268: SQL_Driver::Placeholder& ph=**pptr;
1269: ph.name=aname.cstr();
1.261 misha 1270: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1271: ph.is_null=avalue->get_class()==void_class;
1272: ph.were_updated=false;
1273:
1274: (*pptr)++;
1275: }
1276:
1277: // not static, used elsewhere
1278: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1279: int hash_count=hash.count();
1.302 moko 1280: placeholders=new SQL_Driver::Placeholder[hash_count];
1.204 paf 1281: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1282: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1283: return hash_count;
1284: }
1285:
1286: // not static, used elsewhere
1287: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1288: SQL_Driver::Placeholder* ph=placeholders;
1289: for(int i=0; i<placeholder_count; i++, ph++)
1290: if(ph->were_updated) {
1291: Value* value;
1292: if(ph->is_null)
1.248 misha 1293: value=VVoid::get();
1.204 paf 1294: else
1.256 misha 1295: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1296: hash.put(ph->name, value);
1297: }
1298: }
1299:
1.182 paf 1300: static void _sql(Request& r, MethodParams& params) {
1301: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1302:
1.204 paf 1303: HashStringValue* bind=0;
1.244 misha 1304: ulong limit=SQL_NO_LIMIT;
1.100 parser 1305: ulong offset=0;
1.281 misha 1306: if(params.count()>1)
1.288 misha 1307: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.281 misha 1308: int valid_options=0;
1309: if(Value* vbind=options->get(sql_bind_name)) {
1310: valid_options++;
1311: bind=vbind->get_hash();
1312: }
1313: if(Value* vlimit=options->get(sql_limit_name)) {
1314: valid_options++;
1315: limit=(ulong)r.process_to_value(*vlimit).as_double();
1316: }
1317: if(Value* voffset=options->get(sql_offset_name)) {
1318: valid_options++;
1319: offset=(ulong)r.process_to_value(*voffset).as_double();
1320: }
1321: if(valid_options!=options->count())
1322: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1323: }
1.49 paf 1324:
1.204 paf 1325: SQL_Driver::Placeholder* placeholders=0;
1326: uint placeholders_count=0;
1327: if(bind)
1328: placeholders_count=marshal_binds(*bind, placeholders);
1329:
1.182 paf 1330: Temp_lang temp_lang(r, String::L_SQL);
1331: const String& statement_string=r.process_to_string(statement);
1.262 misha 1332: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1333:
1.182 paf 1334: Table_sql_event_handlers handlers;
1.294 moko 1335:
1.182 paf 1336: r.connection()->query(
1.203 paf 1337: statement_cstr,
1.208 paf 1338: placeholders_count, placeholders,
1.203 paf 1339: offset, limit,
1.160 paf 1340: handlers,
1341: statement_string);
1.135 paf 1342:
1.204 paf 1343: if(bind)
1344: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1345:
1.182 paf 1346: Table& result=
1347: handlers.table?*handlers.table: // query resulted in table? return it
1348: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1349:
1350: // replace any previous table value
1.182 paf 1351: GET_SELF(r, VTable).set_table(result);
1.49 paf 1352: }
1353:
1.233 misha 1354: static void _columns(Request& r, MethodParams& params) {
1355: const String* column_column_name;
1356: if(params.count()>0)
1357: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1358: else
1359: column_column_name=new String("column");
1.88 parser 1360:
1.182 paf 1361: Table::columns_type result_columns(new ArrayString);
1.233 misha 1362: *result_columns+=column_column_name;
1.182 paf 1363: Table& result_table=*new Table(result_columns);
1.88 parser 1364:
1.182 paf 1365: Table& source_table=GET_SELF(r, VTable).table();
1366: if(Table::columns_type source_columns=source_table.columns()) {
1367: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1368: Table::element_type result_row(new ArrayString);
1369: *result_row+=i.next();
1370: result_table+=result_row;
1.88 parser 1371: }
1372: }
1373:
1.182 paf 1374: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1375: }
1376:
1.182 paf 1377: static void _select(Request& r, MethodParams& params) {
1.231 misha 1378: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1379:
1.182 paf 1380: Table& source_table=GET_SELF(r, VTable).table();
1.148 paf 1381:
1.277 moko 1382: int limit=source_table.count();
1.282 misha 1383: int offset=0;
1384: bool reverse=false;
1.278 moko 1385:
1.281 misha 1386: if(params.count()>1)
1387: if(HashStringValue* options=params.as_hash(1)) {
1388: int valid_options=0;
1389: if(Value* vlimit=options->get(sql_limit_name)) {
1390: valid_options++;
1391: limit=r.process_to_value(*vlimit).as_int();
1392: }
1393: if(Value* voffset=options->get(sql_offset_name)) {
1394: valid_options++;
1395: offset=r.process_to_value(*voffset).as_int();
1396: }
1397: if(Value* vreverse=options->get(table_reverse_name)) {
1398: valid_options++;
1399: reverse=r.process_to_value(*vreverse).as_bool();
1400: }
1401: if(valid_options!=options->count())
1.288 misha 1402: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.281 misha 1403: }
1404:
1405: Table& result_table=*new Table(source_table.columns());
1.277 moko 1406:
1.283 misha 1407: size_t size=source_table.count();
1408: if(offset<0)
1409: offset+=size;
1.284 misha 1410: if(size && limit>0 && offset>=0 && (size_t)offset<size){
1.282 misha 1411: size_t saved_current=source_table.current();
1412: size_t appended=0;
1413:
1414: if(reverse){
1415: for(size_t row=size-1; result_table.count() < (size_t)limit; row--) {
1416: source_table.set_current(row);
1417:
1418: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1419:
1420: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1421: result_table+=source_table[row];
1422: if(row==0) break;
1423: }
1424: } else {
1425: for(size_t row=0; row < size && result_table.count() < (size_t)limit; row++) {
1426: source_table.set_current(row);
1.148 paf 1427:
1.282 misha 1428: bool condition=r.process_to_value(vcondition, false/*don't intercept string*/).as_bool();
1.277 moko 1429:
1.282 misha 1430: if(condition && ++appended > (size_t)offset) // ...condition is true, adding to the result
1431: result_table+=source_table[row];
1432: }
1.277 moko 1433: }
1.282 misha 1434: source_table.set_current(saved_current);
1.148 paf 1435: }
1436:
1.182 paf 1437: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1438: }
1439:
1.66 paf 1440: // constructor
1441:
1.182 paf 1442: MTable::MTable(): Methoded("table") {
1.142 paf 1443: // ^table::create{data}
1444: // ^table::create[nameless]{data}
1445: // ^table::create[table]
1.236 misha 1446: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1447: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1448: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1449:
1.142 paf 1450: // ^table::load[file]
1451: // ^table::load[nameless;file]
1.168 paf 1452: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1453:
1454: // ^table.save[file]
1455: // ^table.save[nameless;file]
1.188 paf 1456: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1457:
1.224 misha 1458: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1459:
1.297 moko 1460: // ^table.csv-string[]
1461: // ^table.csv-string[nameless]
1462: // ^table.csv-string[nameless;$.encloser["] $.separator[,]]
1463: add_native_method("csv-string", Method::CT_DYNAMIC, _csv_string, 0, 2);
1464:
1.6 paf 1465: // ^table.count[]
1.280 misha 1466: // ^table.count[rows]
1467: // ^table.count[columns]
1468: // ^table.count[cells]
1469: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 1);
1.6 paf 1470:
1471: // ^table.line[]
1.66 paf 1472: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1473:
1.10 paf 1474: // ^table.offset[]
1.133 paf 1475: // ^table.offset(offset)
1476: // ^table.offset[cur|set](offset)
1477: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1478:
1.10 paf 1479: // ^table.menu{code}
1480: // ^table.menu{code}[delim]
1.66 paf 1481: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1482:
1.239 misha 1483: // ^table.hash[key field name]
1484: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1485: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1486:
1.102 parser 1487: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1488: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1489: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1490:
1.36 paf 1491: // ^table.locate[field;value]
1.176 paf 1492: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1493:
1494: // ^table.flip[]
1.66 paf 1495: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1496:
1.293 misha 1497: // ^table.foreach[row-num;value]{code}
1498: // ^table.foreach[row-num;value]{code}[delim]
1499: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 3, 4);
1500:
1.306 moko 1501: // ^table.append{row{tab}data}
1.66 paf 1502: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1503:
1.306 moko 1504: // ^table.insert{row{tab}data} before current row
1505: add_native_method("insert", Method::CT_DYNAMIC, _insert, 1, 1);
1506:
1.307 moko 1507: // ^table.delete[] current row
1508: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 0);
1509:
1.157 paf 1510: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1511: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1512:
1513:
1.239 misha 1514: // ^table::sql[query]
1515: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1516: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1517:
1.239 misha 1518: // ^table.columns[[column name]]
1.233 misha 1519: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1520:
1521: // ^table.select(expression) = table
1.277 moko 1522: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 2);
1.40 paf 1523: }
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