Annotation of parser3/src/classes/string.C, revision 1.84
1.24 paf 1: /** @file
2: Parser: @b string parser class.
3:
1.4 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.75 parser 5: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.24 paf 6:
1.84 ! parser 7: $Id: string.C,v 1.83 2001/10/17 15:44:47 parser Exp $
1.1 paf 8: */
9:
1.43 paf 10: #include "classes.h"
1.1 paf 11: #include "pa_request.h"
12: #include "pa_vdouble.h"
13: #include "pa_vint.h"
1.17 paf 14: #include "pa_vtable.h"
1.25 paf 15: #include "pa_vbool.h"
1.27 paf 16: #include "pa_string.h"
1.53 parser 17: #include "pa_sql_connection.h"
1.71 parser 18: #include "pa_dictionary.h"
1.1 paf 19:
1.41 paf 20: // defines
1.1 paf 21:
1.41 paf 22: #define STRING_CLASS_NAME "string"
23:
24: // class
25:
26: class MString : public Methoded {
27: public:
28: MString(Pool& pool);
1.44 paf 29: public: // Methoded
1.53 parser 30: bool used_directly() { return true; }
1.41 paf 31: };
1.1 paf 32:
33: // methods
34:
1.47 paf 35: static void _length(Request& r, const String& method_name, MethodParams *) {
1.1 paf 36: Pool& pool=r.pool();
1.47 paf 37: Value& result=*new(pool) VDouble(pool, r.self->get_string()->size());
38: result.set_name(method_name);
39: r.write_no_lang(result);
1.1 paf 40: }
41:
1.72 parser 42: static void _int(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 43: Pool& pool=r.pool();
1.72 parser 44: int converted;
1.81 parser 45: Value *default_code=params->size()>0?
46: default_code=¶ms->as_junction(0, "default must be int"):0; // (default)
1.84 ! parser 47: try {
1.72 parser 48: converted=r.self->as_int();
1.84 ! parser 49: } catch(...) { // convert problem
! 50: if(!default_code) // we have a problem when no default
! 51: /*re*/throw;
! 52: else
1.81 parser 53: converted=r.process(*default_code).as_int();
1.72 parser 54: }
55:
56: Value& result=*new(pool) VInt(pool, converted);
1.47 paf 57: result.set_name(method_name);
58: r.write_no_lang(result);
1.1 paf 59: }
60:
1.72 parser 61: static void _double(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 62: Pool& pool=r.pool();
1.72 parser 63: double converted;
1.81 parser 64: Value *default_code=params->size()>0?
65: default_code=¶ms->as_junction(0, "default must be double"):0; // (default)
1.84 ! parser 66: try {
1.72 parser 67: converted=r.self->as_double();
1.84 ! parser 68: } catch(...) { // convert problem
! 69: if(!default_code) // we have a problem when no default
! 70: /*re*/throw;
! 71: else
1.81 parser 72: converted=r.process(*default_code).as_double();
1.72 parser 73: }
74:
75: Value& result=*new(pool) VDouble(pool, converted);
1.47 paf 76: result.set_name(method_name);
77: r.write_no_lang(result);
1.1 paf 78: }
79:
1.38 paf 80: /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 81: Pool& pool=r.pool();
82:
1.59 parser 83: Value& fmt=params->as_junction(0, "fmt must be code");
1.9 paf 84:
1.24 paf 85: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
86: char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr());
1.63 parser 87:
88: String result(pool);
89: result.APPEND_CLEAN(buf, 0,
90: method_name.origin().file,
91: method_name.origin().line);
92: r.write_no_lang(result);
1.9 paf 93: }
1.11 paf 94:
1.38 paf 95: static void _left(Request& r, const String&, MethodParams *params) {
1.15 paf 96: Pool& pool=r.pool();
97:
1.78 parser 98: size_t n=(size_t)params->as_int(0, "n must be int", r);
1.15 paf 99:
100: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 101: r.write_assign_lang(*new(pool) VString(string.mid(0, n)));
1.15 paf 102: }
103:
1.38 paf 104: static void _right(Request& r, const String&, MethodParams *params) {
1.15 paf 105: Pool& pool=r.pool();
106:
1.78 parser 107: size_t n=(size_t)params->as_int(0, "n must be int", r);
1.15 paf 108:
109: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 110: r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));
1.15 paf 111: }
112:
1.38 paf 113: static void _mid(Request& r, const String&, MethodParams *params) {
1.15 paf 114: Pool& pool=r.pool();
115:
1.83 parser 116: const String& string=*static_cast<VString *>(r.self)->get_string();
117:
1.78 parser 118: size_t p=(size_t)params->as_int(0, "p must be int", r);
1.83 parser 119: size_t n=params->size()>1?
120: (size_t)params->as_int(1, "n must be int", r):string.size();
1.15 paf 121:
1.35 paf 122: r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));
1.15 paf 123: }
124:
1.38 paf 125: static void _pos(Request& r, const String& method_name, MethodParams *params) {
1.16 paf 126: Pool& pool=r.pool();
127:
1.59 parser 128: Value& substr=params->as_no_junction(0, "substr must not be code");
1.16 paf 129:
130: const String& string=*static_cast<VString *>(r.self)->get_string();
131: r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));
132: }
133:
1.38 paf 134: static void split_list(Request& r, const String& method_name, MethodParams *params,
1.23 paf 135: const String& string,
136: Array& result) {
1.59 parser 137: Value& delim_value=params->as_no_junction(0, "delimiter must not be code");
1.23 paf 138:
1.45 paf 139: string.split(result, 0, delim_value.as_string());
1.19 paf 140: }
141:
1.38 paf 142: static void _lsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 143: Pool& pool=r.pool();
144: const String& string=*static_cast<VString *>(r.self)->get_string();
145:
1.61 parser 146: Array pieces(pool);
147: split_list(r, method_name, params, string, pieces);
148:
149: Array& columns=*new(pool) Array(pool);
150: columns+=new(pool) String(pool, "piece");
1.19 paf 151:
1.21 paf 152: Table& table=*new(pool) Table(pool, &string,
1.61 parser 153: &columns, pieces.size());
1.69 parser 154: Array_iter i(pieces);
155: while(i.has_next()) {
1.61 parser 156: Array& row=*new(pool) Array(pool);
1.69 parser 157: row+=i.next();
1.61 parser 158: table+=&row;
159: }
1.19 paf 160: r.write_no_lang(*new(pool) VTable(pool, &table));
161: }
162:
1.38 paf 163: static void _rsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 164: Pool& pool=r.pool();
165: const String& string=*static_cast<VString *>(r.self)->get_string();
166:
1.61 parser 167: Array pieces(pool);
168: split_list(r, method_name, params, string, pieces);
1.19 paf 169:
1.61 parser 170: Array& columns=*new(pool) Array(pool);
171: columns+=new(pool) String(pool, "piece");
1.21 paf 172:
173: Table& table=*new(pool) Table(pool, &string,
1.61 parser 174: &columns, pieces.size());
175: for(int i=pieces.size(); --i>=0; ) {
176: Array& row=*new(pool) Array(pool);
177: row+=pieces.get(i);
178: table+=&row;
179: }
1.17 paf 180:
1.19 paf 181: r.write_no_lang(*new(pool) VTable(pool, &table));
1.17 paf 182: }
183:
1.33 paf 184: static void search_action(Table& table, Array *row, int, int, void *) {
1.28 paf 185: if(row)
186: table+=row;
1.27 paf 187: }
188:
1.74 parser 189: #ifndef DOXYGEN
1.27 paf 190: struct Replace_action_info {
1.30 paf 191: Request *request; const String *origin;
1.31 paf 192: const String *src; String *dest;
1.27 paf 193: Value *replacement_code;
1.29 paf 194: const String *post_match;
1.27 paf 195: };
1.74 parser 196: #endif
1.33 paf 197: static void replace_action(Table& table, Array *row, int start, int finish,
1.31 paf 198: void *info) {
1.27 paf 199: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 200: if(row) { // begin&middle
201: // piece from last match['start'] to beginning of this match['finish']
202: if(start!=finish)
1.37 paf 203: *ai.dest << ai.src->mid(start, finish);//ai.dest->APPEND_CONST("-");
1.51 parser 204: // store found parts in one-record VTable
1.32 paf 205: if(table.size()) // middle
206: table.put(0, row);
207: else // begin
1.30 paf 208: table+=row;
209: { // execute 'replacement_code' in 'table' context
210: VTable& vtable=*new(table.pool()) VTable(table.pool(), &table);
211: vtable.set_name(*ai.origin);
212:
213: Junction *junction=ai.replacement_code->get_junction();
1.66 parser 214: Value *saved_match_var_value=junction->root->get_element(*match_var_name);
215: junction->root->put_element(*match_var_name, &vtable);
1.30 paf 216: Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false);
1.66 parser 217: junction->root->put_element(*match_var_name, saved_match_var_value);
1.30 paf 218:
1.34 paf 219: /*
1.31 paf 220: ai.dest->APPEND_CONST("(");
1.37 paf 221: *ai.dest << *(String *)row->get(1/*match* /);
1.31 paf 222: ai.dest->APPEND_CONST(")");
1.34 paf 223: */
1.37 paf 224: *ai.dest << replaced.as_string();
1.29 paf 225: }
226: ai.post_match=(String *)row->get(2/*post_match*/);
227: } else // end
1.37 paf 228: *ai.dest << *ai.post_match;
1.27 paf 229: }
230:
1.50 parser 231: /// @todo use pcre:study somehow
1.38 paf 232: static void _match(Request& r, const String& method_name, MethodParams *params) {
1.24 paf 233: Pool& pool=r.pool();
1.28 paf 234: const String& src=*static_cast<VString *>(r.self)->get_string();
1.24 paf 235:
1.59 parser 236: Value& regexp=params->as_no_junction(0, "regexp must not be code");
1.38 paf 237:
238: const String *options=
239: params->size()>1?
1.59 parser 240: ¶ms->as_no_junction(1, "options must not be code").as_string():0;
1.24 paf 241:
1.27 paf 242: Value *result;
1.24 paf 243: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.25 paf 244: Table *table;
1.27 paf 245: if(params->size()<3) { // search
1.64 parser 246: bool was_global;
1.76 parser 247: bool matched=src.match(r.pcre_tables(),
1.39 paf 248: &method_name,
1.32 paf 249: regexp.as_string(), options,
1.27 paf 250: &table,
1.64 parser 251: search_action, 0,
252: &was_global);
1.60 parser 253: // matched
1.64 parser 254: // not (just matched[3=pre/match/post], no substrings) or Global search
255: if(table->columns()->size()>3 || was_global)
256: result=new(pool) VTable(pool, table); // table of pre/match/post+substrings
257: else
258: result=new(pool) VBool(pool, matched);
1.27 paf 259: } else { // replace
1.59 parser 260: Value& replacement_code=params->as_junction(2, "replacement code must be code");
1.24 paf 261:
1.28 paf 262: String& dest=*new(pool) String(pool);
1.27 paf 263: Replace_action_info replace_action_info={
1.30 paf 264: &r, &method_name,
1.31 paf 265: &src, &dest,
1.28 paf 266: &replacement_code,
1.29 paf 267: &src
1.27 paf 268: };
1.76 parser 269: src.match(r.pcre_tables(),
1.39 paf 270: &method_name,
1.27 paf 271: r.process(regexp).as_string(), options,
272: &table,
1.33 paf 273: replace_action, &replace_action_info);
1.28 paf 274: result=new(pool) VString(dest);
1.27 paf 275: }
1.26 paf 276: result->set_name(method_name);
1.34 paf 277: r.write_assign_lang(*result);
1.24 paf 278: }
279:
1.49 parser 280: static void change_case(Request& r, const String& method_name, MethodParams *params,
281: String::Change_case_kind kind) {
282: Pool& pool=r.pool();
283: const String& src=*static_cast<VString *>(r.self)->get_string();
284:
1.76 parser 285: r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables(),
1.49 parser 286: kind)));
287: }
288: static void _upper(Request& r, const String& method_name, MethodParams *params) {
289: change_case(r, method_name, params, String::CC_UPPER);
290: }
291: static void _lower(Request& r, const String& method_name, MethodParams *params) {
292: change_case(r, method_name, params, String::CC_LOWER);
293: }
294:
1.65 parser 295: #ifndef DOXYGEN
296: class String_sql_event_handlers : public SQL_Driver_query_event_handlers {
297: public:
298: String_sql_event_handlers(Pool& apool,
299: const String& astatement_string, const char *astatement_cstr) :
300: pool(apool),
301: statement_string(astatement_string),
302: statement_cstr(astatement_cstr),
303: got_column(false), got_cell(false) {
304: result=new(pool) String(pool);
305: }
306:
307: void add_column(void *ptr, size_t size) {
308: if(got_column)
1.84 ! parser 309: throw Exception(0, 0,
1.65 parser 310: &statement_string,
311: "result must contain exactly one column");
312: got_column=true;
313: }
314: void before_rows() { /* ignore */ }
315: void add_row() { /* ignore */ }
316: void add_row_cell(void *ptr, size_t size) {
317: if(got_cell)
1.84 ! parser 318: throw Exception(0, 0,
1.65 parser 319: &statement_string,
320: "result must not contain more then one row");
321: got_cell=true;
322:
323: result->APPEND_TAINTED((const char *)ptr, size, statement_cstr, 0);
324: }
325:
326: private:
327: Pool& pool;
328: const String& statement_string; const char *statement_cstr;
329: bool got_column;
330: public:
331: bool got_cell;
332: String *result;
333: };
334: #endif
1.70 parser 335: const String* sql_result_string(Request& r, const String& method_name, MethodParams *params,
1.81 parser 336: Hash *& options, Value *& default_code) {
1.53 parser 337: Pool& pool=r.pool();
338:
339: if(!r.connection)
1.84 ! parser 340: throw Exception(0, 0,
1.53 parser 341: &method_name,
342: "without connect");
343:
1.59 parser 344: Value& statement=params->as_junction(0, "statement must be code");
1.53 parser 345:
1.70 parser 346: ulong limit=0;
347: ulong offset=0;
1.81 parser 348: default_code=0;
1.70 parser 349: if(params->size()>1) {
1.73 parser 350: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
351: if(voptions.is_defined())
352: if(options=voptions.get_hash()) {
353: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
354: limit=(ulong)r.process(*vlimit).as_double();
355: if(Value *voffset=(Value *)options->get(*sql_offset_name))
356: offset=(ulong)r.process(*voffset).as_double();
1.81 parser 357: if(default_code=(Value *)options->get(*sql_default_name)) {
358: if(!default_code->get_junction())
1.84 ! parser 359: throw Exception(0, 0,
1.81 parser 360: &method_name,
361: "default option must be code");
362: }
1.73 parser 363: } else
1.84 ! parser 364: throw Exception(0, 0,
1.73 parser 365: &method_name,
366: "options must be hash");
1.70 parser 367: } else
368: options=0;
369:
1.53 parser 370: Temp_lang temp_lang(r, String::UL_SQL);
371: const String& statement_string=r.process(statement).as_string();
372: const char *statement_cstr=
373: statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
1.65 parser 374: String_sql_event_handlers handlers(pool, statement_string, statement_cstr);
1.84 ! parser 375: try {
1.53 parser 376: r.connection->query(
1.70 parser 377: statement_cstr, offset, limit,
1.65 parser 378: handlers);
1.84 ! parser 379: } catch(const Exception& e) { // query problem
! 380: // give more specific source [were url]
! 381: throw Exception(e.type(), e.code(),
! 382: &statement_string,
! 383: "%s", e.comment());
1.53 parser 384: }
385:
1.65 parser 386: if(!handlers.got_cell)
387: return 0; // no lines, caller should return second param[default value]
1.62 parser 388:
1.65 parser 389: return handlers.result;
1.53 parser 390: }
391:
392: static void _sql(Request& r, const String& method_name, MethodParams *params) {
393: Pool& pool=r.pool();
394:
1.70 parser 395: Hash *options;
1.81 parser 396: Value *default_code;
397: const String *string=sql_result_string(r, method_name, params, options, default_code);
1.62 parser 398: if(!string) {
1.81 parser 399: if(default_code) {
400: string=r.process(*default_code).get_string();
401: if(!string)
402: string=new(pool) String(pool);
1.68 parser 403: } else
1.84 ! parser 404: throw Exception(0, 0,
1.68 parser 405: &method_name,
1.81 parser 406: "produced no result, but no default option specified");
1.62 parser 407: }
408: VString& result=*new(pool) VString(*string);
1.53 parser 409: result.set_name(method_name);
410: r.write_assign_lang(result);
411: }
412:
1.71 parser 413: static void _replace(Request& r, const String& method_name, MethodParams *params) {
414: Pool& pool=r.pool();
415: const String& src=*static_cast<VString *>(r.self)->get_string();
416:
417: Table *table=params->as_no_junction(0, "parameter must not be code").get_table();
418: if(!table)
1.84 ! parser 419: throw Exception(0, 0,
1.71 parser 420: &method_name,
421: "parameter must be table");
422:
423: Dictionary dict(*table);
424: r.write_assign_lang(*new(pool) VString(src.replace(pool, dict)));
425: }
1.79 parser 426:
427: static void _save(Request& r, const String& method_name, MethodParams *params) {
428: Pool& pool=r.pool();
429: Value& vfile_name=params->as_no_junction(0,
430: "file name must not be code");
431:
432: const String& src=*static_cast<VString *>(r.self)->get_string();
433:
434: // write
435: file_write(pool, r.absolute(vfile_name.as_string()),
436: src.cstr(String::UL_AS_IS), src.size(), true);
437: }
438:
1.41 paf 439: // constructor
440:
441: MString::MString(Pool& apool) : Methoded(apool) {
442: set_name(*NEW String(pool(), STRING_CLASS_NAME));
443:
1.9 paf 444:
1.1 paf 445: // ^string.length[]
1.41 paf 446: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 447:
1.1 paf 448: // ^string.int[]
1.72 parser 449: // ^string.int(default)
450: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.1 paf 451: // ^string.double[]
1.72 parser 452: // ^string.double(default)
453: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.9 paf 454:
1.24 paf 455: // ^string.format{format}
1.41 paf 456: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 457:
1.15 paf 458: // ^string.left(n)
1.41 paf 459: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 460: // ^string.right(n)
1.41 paf 461: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.15 paf 462: // ^string.mid(p;n)
1.82 parser 463: add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2);
1.16 paf 464:
465: // ^string.pos[substr]
1.41 paf 466: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1);
1.17 paf 467:
468: // ^string.lsplit[delim]
1.41 paf 469: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
1.19 paf 470: // ^string.rsplit[delim]
1.41 paf 471: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
1.24 paf 472:
1.32 paf 473: // ^string.match[regexp][options]
474: // ^string.match[regexp][options]{replacement-code}
1.41 paf 475: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3);
1.49 parser 476:
477: // ^string.toupper[]
478: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
479: // ^string.tolower[]
480: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 481:
1.70 parser 482: // ^sql[query]
483: // ^sql[query][$.limit(1) $.offset(2) $.default[n/a]]
1.67 parser 484: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.71 parser 485:
486: // ^string.replace[table]
487: add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 1);
1.79 parser 488:
489: // ^string.save[file]
490: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 1);
1.2 paf 491: }
1.1 paf 492:
1.41 paf 493: // global variable
494:
495: Methoded *string_class;
496:
497: // creator
498:
499: Methoded *MString_create(Pool& pool) {
500: return string_class=new(pool) MString(pool);
501: }
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