Annotation of parser3/src/classes/string.C, revision 1.81
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:
1.81 ! parser 7: $Id: string.C,v 1.80 2001/10/11 10:21:44 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: bool convert_problem=false; Exception rethrow_me;
45: int converted;
1.81 ! parser 46: Value *default_code=params->size()>0?
! 47: default_code=¶ms->as_junction(0, "default must be int"):0; // (default)
1.72 parser 48: PTRY {
49: converted=r.self->as_int();
50: }
51: PCATCH(e) { // convert problem
1.81 ! parser 52: if(convert_problem=!default_code) { // we have a problem when no default
1.72 parser 53: rethrow_me=e;
54: converted=0;
55: } else
1.81 ! parser 56: converted=r.process(*default_code).as_int();
1.72 parser 57: }
58: PEND_CATCH
59: if(convert_problem)
60: PTHROW(rethrow_me.type(), rethrow_me.code(),
61: rethrow_me.problem_source(),
62: rethrow_me.comment());
63:
64: Value& result=*new(pool) VInt(pool, converted);
1.47 paf 65: result.set_name(method_name);
66: r.write_no_lang(result);
1.1 paf 67: }
68:
1.72 parser 69: static void _double(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 70: Pool& pool=r.pool();
1.72 parser 71: bool convert_problem=false; Exception rethrow_me;
72: double converted;
1.81 ! parser 73: Value *default_code=params->size()>0?
! 74: default_code=¶ms->as_junction(0, "default must be double"):0; // (default)
1.72 parser 75: PTRY {
76: converted=r.self->as_double();
77: }
78: PCATCH(e) { // convert problem
1.81 ! parser 79: if(convert_problem=!default_code) { // we have a problem when no default
1.72 parser 80: rethrow_me=e;
81: converted=0;
82: } else
1.81 ! parser 83: converted=r.process(*default_code).as_double();
1.72 parser 84: }
85: PEND_CATCH
86: if(convert_problem)
87: PTHROW(rethrow_me.type(), rethrow_me.code(),
88: rethrow_me.problem_source(),
89: rethrow_me.comment());
90:
91: Value& result=*new(pool) VDouble(pool, converted);
1.47 paf 92: result.set_name(method_name);
93: r.write_no_lang(result);
1.1 paf 94: }
95:
1.38 paf 96: /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 97: Pool& pool=r.pool();
98:
1.59 parser 99: Value& fmt=params->as_junction(0, "fmt must be code");
1.9 paf 100:
1.24 paf 101: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
102: char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr());
1.63 parser 103:
104: String result(pool);
105: result.APPEND_CLEAN(buf, 0,
106: method_name.origin().file,
107: method_name.origin().line);
108: r.write_no_lang(result);
1.9 paf 109: }
1.11 paf 110:
1.38 paf 111: static void _left(Request& r, const String&, MethodParams *params) {
1.15 paf 112: Pool& pool=r.pool();
113:
1.78 parser 114: size_t n=(size_t)params->as_int(0, "n must be int", r);
1.15 paf 115:
116: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 117: r.write_assign_lang(*new(pool) VString(string.mid(0, n)));
1.15 paf 118: }
119:
1.38 paf 120: static void _right(Request& r, const String&, MethodParams *params) {
1.15 paf 121: Pool& pool=r.pool();
122:
1.78 parser 123: size_t n=(size_t)params->as_int(0, "n must be int", r);
1.15 paf 124:
125: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 126: r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));
1.15 paf 127: }
128:
1.38 paf 129: static void _mid(Request& r, const String&, MethodParams *params) {
1.15 paf 130: Pool& pool=r.pool();
131:
1.78 parser 132: size_t p=(size_t)params->as_int(0, "p must be int", r);
133: size_t n=(size_t)params->as_int(1, "n must be int", r);
1.15 paf 134:
135: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 136: r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));
1.15 paf 137: }
138:
1.38 paf 139: static void _pos(Request& r, const String& method_name, MethodParams *params) {
1.16 paf 140: Pool& pool=r.pool();
141:
1.59 parser 142: Value& substr=params->as_no_junction(0, "substr must not be code");
1.16 paf 143:
144: const String& string=*static_cast<VString *>(r.self)->get_string();
145: r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));
146: }
147:
1.38 paf 148: static void split_list(Request& r, const String& method_name, MethodParams *params,
1.23 paf 149: const String& string,
150: Array& result) {
1.59 parser 151: Value& delim_value=params->as_no_junction(0, "delimiter must not be code");
1.23 paf 152:
1.45 paf 153: string.split(result, 0, delim_value.as_string());
1.19 paf 154: }
155:
1.38 paf 156: static void _lsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 157: Pool& pool=r.pool();
158: const String& string=*static_cast<VString *>(r.self)->get_string();
159:
1.61 parser 160: Array pieces(pool);
161: split_list(r, method_name, params, string, pieces);
162:
163: Array& columns=*new(pool) Array(pool);
164: columns+=new(pool) String(pool, "piece");
1.19 paf 165:
1.21 paf 166: Table& table=*new(pool) Table(pool, &string,
1.61 parser 167: &columns, pieces.size());
1.69 parser 168: Array_iter i(pieces);
169: while(i.has_next()) {
1.61 parser 170: Array& row=*new(pool) Array(pool);
1.69 parser 171: row+=i.next();
1.61 parser 172: table+=&row;
173: }
1.19 paf 174: r.write_no_lang(*new(pool) VTable(pool, &table));
175: }
176:
1.38 paf 177: static void _rsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 178: Pool& pool=r.pool();
179: const String& string=*static_cast<VString *>(r.self)->get_string();
180:
1.61 parser 181: Array pieces(pool);
182: split_list(r, method_name, params, string, pieces);
1.19 paf 183:
1.61 parser 184: Array& columns=*new(pool) Array(pool);
185: columns+=new(pool) String(pool, "piece");
1.21 paf 186:
187: Table& table=*new(pool) Table(pool, &string,
1.61 parser 188: &columns, pieces.size());
189: for(int i=pieces.size(); --i>=0; ) {
190: Array& row=*new(pool) Array(pool);
191: row+=pieces.get(i);
192: table+=&row;
193: }
1.17 paf 194:
1.19 paf 195: r.write_no_lang(*new(pool) VTable(pool, &table));
1.17 paf 196: }
197:
1.33 paf 198: static void search_action(Table& table, Array *row, int, int, void *) {
1.28 paf 199: if(row)
200: table+=row;
1.27 paf 201: }
202:
1.74 parser 203: #ifndef DOXYGEN
1.27 paf 204: struct Replace_action_info {
1.30 paf 205: Request *request; const String *origin;
1.31 paf 206: const String *src; String *dest;
1.27 paf 207: Value *replacement_code;
1.29 paf 208: const String *post_match;
1.27 paf 209: };
1.74 parser 210: #endif
1.33 paf 211: static void replace_action(Table& table, Array *row, int start, int finish,
1.31 paf 212: void *info) {
1.27 paf 213: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 214: if(row) { // begin&middle
215: // piece from last match['start'] to beginning of this match['finish']
216: if(start!=finish)
1.37 paf 217: *ai.dest << ai.src->mid(start, finish);//ai.dest->APPEND_CONST("-");
1.51 parser 218: // store found parts in one-record VTable
1.32 paf 219: if(table.size()) // middle
220: table.put(0, row);
221: else // begin
1.30 paf 222: table+=row;
223: { // execute 'replacement_code' in 'table' context
224: VTable& vtable=*new(table.pool()) VTable(table.pool(), &table);
225: vtable.set_name(*ai.origin);
226:
227: Junction *junction=ai.replacement_code->get_junction();
1.66 parser 228: Value *saved_match_var_value=junction->root->get_element(*match_var_name);
229: junction->root->put_element(*match_var_name, &vtable);
1.30 paf 230: Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false);
1.66 parser 231: junction->root->put_element(*match_var_name, saved_match_var_value);
1.30 paf 232:
1.34 paf 233: /*
1.31 paf 234: ai.dest->APPEND_CONST("(");
1.37 paf 235: *ai.dest << *(String *)row->get(1/*match* /);
1.31 paf 236: ai.dest->APPEND_CONST(")");
1.34 paf 237: */
1.37 paf 238: *ai.dest << replaced.as_string();
1.29 paf 239: }
240: ai.post_match=(String *)row->get(2/*post_match*/);
241: } else // end
1.37 paf 242: *ai.dest << *ai.post_match;
1.27 paf 243: }
244:
1.50 parser 245: /// @todo use pcre:study somehow
1.38 paf 246: static void _match(Request& r, const String& method_name, MethodParams *params) {
1.24 paf 247: Pool& pool=r.pool();
1.28 paf 248: const String& src=*static_cast<VString *>(r.self)->get_string();
1.24 paf 249:
1.59 parser 250: Value& regexp=params->as_no_junction(0, "regexp must not be code");
1.38 paf 251:
252: const String *options=
253: params->size()>1?
1.59 parser 254: ¶ms->as_no_junction(1, "options must not be code").as_string():0;
1.24 paf 255:
1.27 paf 256: Value *result;
1.24 paf 257: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.25 paf 258: Table *table;
1.27 paf 259: if(params->size()<3) { // search
1.64 parser 260: bool was_global;
1.76 parser 261: bool matched=src.match(r.pcre_tables(),
1.39 paf 262: &method_name,
1.32 paf 263: regexp.as_string(), options,
1.27 paf 264: &table,
1.64 parser 265: search_action, 0,
266: &was_global);
1.60 parser 267: // matched
1.64 parser 268: // not (just matched[3=pre/match/post], no substrings) or Global search
269: if(table->columns()->size()>3 || was_global)
270: result=new(pool) VTable(pool, table); // table of pre/match/post+substrings
271: else
272: result=new(pool) VBool(pool, matched);
1.27 paf 273: } else { // replace
1.59 parser 274: Value& replacement_code=params->as_junction(2, "replacement code must be code");
1.24 paf 275:
1.28 paf 276: String& dest=*new(pool) String(pool);
1.27 paf 277: Replace_action_info replace_action_info={
1.30 paf 278: &r, &method_name,
1.31 paf 279: &src, &dest,
1.28 paf 280: &replacement_code,
1.29 paf 281: &src
1.27 paf 282: };
1.76 parser 283: src.match(r.pcre_tables(),
1.39 paf 284: &method_name,
1.27 paf 285: r.process(regexp).as_string(), options,
286: &table,
1.33 paf 287: replace_action, &replace_action_info);
1.28 paf 288: result=new(pool) VString(dest);
1.27 paf 289: }
1.26 paf 290: result->set_name(method_name);
1.34 paf 291: r.write_assign_lang(*result);
1.24 paf 292: }
293:
1.49 parser 294: static void change_case(Request& r, const String& method_name, MethodParams *params,
295: String::Change_case_kind kind) {
296: Pool& pool=r.pool();
297: const String& src=*static_cast<VString *>(r.self)->get_string();
298:
1.76 parser 299: r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables(),
1.49 parser 300: kind)));
301: }
302: static void _upper(Request& r, const String& method_name, MethodParams *params) {
303: change_case(r, method_name, params, String::CC_UPPER);
304: }
305: static void _lower(Request& r, const String& method_name, MethodParams *params) {
306: change_case(r, method_name, params, String::CC_LOWER);
307: }
308:
1.65 parser 309: #ifndef DOXYGEN
310: class String_sql_event_handlers : public SQL_Driver_query_event_handlers {
311: public:
312: String_sql_event_handlers(Pool& apool,
313: const String& astatement_string, const char *astatement_cstr) :
314: pool(apool),
315: statement_string(astatement_string),
316: statement_cstr(astatement_cstr),
317: got_column(false), got_cell(false) {
318: result=new(pool) String(pool);
319: }
320:
321: void add_column(void *ptr, size_t size) {
322: if(got_column)
323: PTHROW(0, 0,
324: &statement_string,
325: "result must contain exactly one column");
326: got_column=true;
327: }
328: void before_rows() { /* ignore */ }
329: void add_row() { /* ignore */ }
330: void add_row_cell(void *ptr, size_t size) {
331: if(got_cell)
332: PTHROW(0, 0,
333: &statement_string,
334: "result must not contain more then one row");
335: got_cell=true;
336:
337: result->APPEND_TAINTED((const char *)ptr, size, statement_cstr, 0);
338: }
339:
340: private:
341: Pool& pool;
342: const String& statement_string; const char *statement_cstr;
343: bool got_column;
344: public:
345: bool got_cell;
346: String *result;
347: };
348: #endif
1.70 parser 349: const String* sql_result_string(Request& r, const String& method_name, MethodParams *params,
1.81 ! parser 350: Hash *& options, Value *& default_code) {
1.53 parser 351: Pool& pool=r.pool();
352:
353: if(!r.connection)
354: PTHROW(0, 0,
355: &method_name,
356: "without connect");
357:
1.59 parser 358: Value& statement=params->as_junction(0, "statement must be code");
1.53 parser 359:
1.70 parser 360: ulong limit=0;
361: ulong offset=0;
1.81 ! parser 362: default_code=0;
1.70 parser 363: if(params->size()>1) {
1.73 parser 364: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
365: if(voptions.is_defined())
366: if(options=voptions.get_hash()) {
367: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
368: limit=(ulong)r.process(*vlimit).as_double();
369: if(Value *voffset=(Value *)options->get(*sql_offset_name))
370: offset=(ulong)r.process(*voffset).as_double();
1.81 ! parser 371: if(default_code=(Value *)options->get(*sql_default_name)) {
! 372: if(!default_code->get_junction())
! 373: PTHROW(0, 0,
! 374: &method_name,
! 375: "default option must be code");
! 376: }
1.73 parser 377: } else
378: PTHROW(0, 0,
379: &method_name,
380: "options must be hash");
1.70 parser 381: } else
382: options=0;
383:
1.53 parser 384: Temp_lang temp_lang(r, String::UL_SQL);
385: const String& statement_string=r.process(statement).as_string();
386: const char *statement_cstr=
387: statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
1.65 parser 388: String_sql_event_handlers handlers(pool, statement_string, statement_cstr);
1.53 parser 389: bool need_rethrow=false; Exception rethrow_me;
390: PTRY {
391: r.connection->query(
1.70 parser 392: statement_cstr, offset, limit,
1.65 parser 393: handlers);
1.53 parser 394: }
395: PCATCH(e) { // query problem
396: rethrow_me=e; need_rethrow=true;
397: }
398: PEND_CATCH
399: if(need_rethrow)
400: PTHROW(rethrow_me.type(), rethrow_me.code(),
401: &statement_string, // setting more specific source [were url]
402: rethrow_me.comment());
403:
1.65 parser 404: if(!handlers.got_cell)
405: return 0; // no lines, caller should return second param[default value]
1.62 parser 406:
1.65 parser 407: return handlers.result;
1.53 parser 408: }
409:
410: static void _sql(Request& r, const String& method_name, MethodParams *params) {
411: Pool& pool=r.pool();
412:
1.70 parser 413: Hash *options;
1.81 ! parser 414: Value *default_code;
! 415: const String *string=sql_result_string(r, method_name, params, options, default_code);
1.62 parser 416: if(!string) {
1.81 ! parser 417: if(default_code) {
! 418: string=r.process(*default_code).get_string();
! 419: if(!string)
! 420: string=new(pool) String(pool);
1.68 parser 421: } else
422: PTHROW(0, 0,
423: &method_name,
1.81 ! parser 424: "produced no result, but no default option specified");
1.62 parser 425: }
426: VString& result=*new(pool) VString(*string);
1.53 parser 427: result.set_name(method_name);
428: r.write_assign_lang(result);
429: }
430:
1.71 parser 431: static void _replace(Request& r, const String& method_name, MethodParams *params) {
432: Pool& pool=r.pool();
433: const String& src=*static_cast<VString *>(r.self)->get_string();
434:
435: Table *table=params->as_no_junction(0, "parameter must not be code").get_table();
436: if(!table)
437: PTHROW(0, 0,
438: &method_name,
439: "parameter must be table");
440:
441: Dictionary dict(*table);
442: r.write_assign_lang(*new(pool) VString(src.replace(pool, dict)));
443: }
1.79 parser 444:
445: static void _save(Request& r, const String& method_name, MethodParams *params) {
446: Pool& pool=r.pool();
447: Value& vfile_name=params->as_no_junction(0,
448: "file name must not be code");
449:
450: const String& src=*static_cast<VString *>(r.self)->get_string();
451:
452: // write
453: file_write(pool, r.absolute(vfile_name.as_string()),
454: src.cstr(String::UL_AS_IS), src.size(), true);
455: }
456:
1.41 paf 457: // constructor
458:
459: MString::MString(Pool& apool) : Methoded(apool) {
460: set_name(*NEW String(pool(), STRING_CLASS_NAME));
461:
1.9 paf 462:
1.1 paf 463: // ^string.length[]
1.41 paf 464: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 465:
1.1 paf 466: // ^string.int[]
1.72 parser 467: // ^string.int(default)
468: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.1 paf 469: // ^string.double[]
1.72 parser 470: // ^string.double(default)
471: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.9 paf 472:
1.24 paf 473: // ^string.format{format}
1.41 paf 474: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 475:
1.15 paf 476: // ^string.left(n)
1.41 paf 477: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 478: // ^string.right(n)
1.41 paf 479: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.15 paf 480: // ^string.mid(p;n)
1.41 paf 481: add_native_method("mid", Method::CT_DYNAMIC, _mid, 2, 2);
1.16 paf 482:
483: // ^string.pos[substr]
1.41 paf 484: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1);
1.17 paf 485:
486: // ^string.lsplit[delim]
1.41 paf 487: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
1.19 paf 488: // ^string.rsplit[delim]
1.41 paf 489: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
1.24 paf 490:
1.32 paf 491: // ^string.match[regexp][options]
492: // ^string.match[regexp][options]{replacement-code}
1.41 paf 493: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3);
1.49 parser 494:
495: // ^string.toupper[]
496: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
497: // ^string.tolower[]
498: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 499:
1.70 parser 500: // ^sql[query]
501: // ^sql[query][$.limit(1) $.offset(2) $.default[n/a]]
1.67 parser 502: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.71 parser 503:
504: // ^string.replace[table]
505: add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 1);
1.79 parser 506:
507: // ^string.save[file]
508: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 1);
1.2 paf 509: }
1.1 paf 510:
1.41 paf 511: // global variable
512:
513: Methoded *string_class;
514:
515: // creator
516:
517: Methoded *MString_create(Pool& pool) {
518: return string_class=new(pool) MString(pool);
519: }
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