Annotation of parser3/src/classes/string.C, revision 1.157
1.24 paf 1: /** @file
2: Parser: @b string parser class.
3:
1.143 paf 4: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.97 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.113 paf 6: */
1.24 paf 7:
1.157 ! misha 8: static const char * const IDENT_STRING_C="$Date: 2007/08/28 09:28:00 $";
1.1 paf 9:
1.43 paf 10: #include "classes.h"
1.126 paf 11: #include "pa_vmethod_frame.h"
12:
1.1 paf 13: #include "pa_request.h"
14: #include "pa_vdouble.h"
15: #include "pa_vint.h"
1.17 paf 16: #include "pa_vtable.h"
1.25 paf 17: #include "pa_vbool.h"
1.27 paf 18: #include "pa_string.h"
1.53 parser 19: #include "pa_sql_connection.h"
1.71 parser 20: #include "pa_dictionary.h"
1.119 paf 21: #include "pa_vmethod_frame.h"
1.1 paf 22:
1.41 paf 23: // class
24:
1.126 paf 25: class MString: public Methoded {
1.41 paf 26: public:
1.126 paf 27: MString();
1.44 paf 28: public: // Methoded
1.53 parser 29: bool used_directly() { return true; }
1.41 paf 30: };
1.1 paf 31:
1.126 paf 32: // global variable
33:
34: DECLARE_CLASS_VAR(string, new MString, 0);
35:
36: // defines for statics
37:
38: #define MATCH_VAR_NAME "match"
1.133 paf 39: #define TRIM_START_OPTION "start"
40: #define TRIM_BOTH_OPTION "both"
41: #define TRIM_END_OPTION "end"
1.126 paf 42:
43: // statics
44:
45: static const String match_var_name(MATCH_VAR_NAME);
46:
1.1 paf 47: // methods
48:
1.126 paf 49: static void _length(Request& r, MethodParams&) {
50: double result=GET_SELF(r, VString).string().length();
51: r.write_no_lang(*new VDouble(result));
1.1 paf 52: }
53:
1.126 paf 54: static void _int(Request& r, MethodParams& params) {
55: const String& self_string=GET_SELF(r, VString).string();
1.72 parser 56: int converted;
1.84 parser 57: try {
1.126 paf 58: if(self_string.is_empty())
1.153 misha 59: throw Exception(PARSER_RUNTIME,
1.126 paf 60: 0,
1.121 paf 61: "parameter is empty string, error converting");
1.126 paf 62: converted=self_string.as_int();
1.84 parser 63: } catch(...) { // convert problem
1.144 paf 64: if(params.count()>0)
65: converted=params.as_int(0, "default must be int", r); // (default)
1.84 parser 66: else
1.126 paf 67: rethrow; // we have a problem when no default
1.72 parser 68: }
1.126 paf 69: r.write_no_lang(*new VInt(converted));
1.1 paf 70: }
71:
1.126 paf 72: static void _double(Request& r, MethodParams& params) {
73: const String& self_string=GET_SELF(r, VString).string();
1.72 parser 74: double converted;
1.84 parser 75: try {
1.126 paf 76: if(self_string.is_empty())
1.153 misha 77: throw Exception(PARSER_RUNTIME,
1.126 paf 78: 0,
1.121 paf 79: "parameter is empty string, error converting");
1.126 paf 80: converted=self_string.as_double();
1.84 parser 81: } catch(...) { // convert problem
1.144 paf 82: if(params.count()>0)
83: converted=params.as_double(0, "default must be double", r); // (default)
1.84 parser 84: else
1.126 paf 85: rethrow; // we have a problem when no default
1.72 parser 86: }
87:
1.126 paf 88: r.write_no_lang(*new VDouble(converted));
1.1 paf 89: }
90:
1.151 misha 91: static void _bool(Request& r, MethodParams& params) {
92: const String& self_string=GET_SELF(r, VString).string();
93: bool converted;
94: try {
95: if(self_string.is_empty())
1.153 misha 96: throw Exception(PARSER_RUNTIME,
1.151 misha 97: 0,
98: "parameter is empty string, error converting");
99: converted=self_string.as_bool();
100: } catch(...) { // convert problem
101: if(params.count()>0)
102: converted=params.as_bool(0, "default must be bool", r); // (default)
103: else
104: rethrow; // we have a problem when no default
105: }
106:
107: r.write_no_lang(*new VBool(converted));
108: }
109:
1.126 paf 110: /*not static*/void _string_format(Request& r, MethodParams& params) {
1.9 paf 111:
1.126 paf 112: Value& fmt_maybe_code=params[0];
1.95 paf 113: // for some time due to stupid {} in original design
1.99 paf 114: const String& fmt=r.process_to_string(fmt_maybe_code);
1.9 paf 115:
1.126 paf 116: const char* buf=format(r.get_self().as_double(), fmt.cstrm());
1.63 parser 117:
1.126 paf 118: r.write_no_lang(String(buf));
1.9 paf 119: }
1.11 paf 120:
1.126 paf 121: static void _left(Request& r, MethodParams& params) {
1.138 paf 122: ssize_t sn=params.as_int(0, "n must be int", r);
123: if(sn<0)
1.153 misha 124: throw Exception(PARSER_RUNTIME,
1.138 paf 125: 0,
126: "n(%d) must be >=0", sn);
127: size_t n=(size_t)sn;
128:
1.126 paf 129: const String& string=GET_SELF(r, VString).string();
1.102 paf 130: r.write_assign_lang(string.mid(0, n));
1.15 paf 131: }
132:
1.126 paf 133: static void _right(Request& r, MethodParams& params) {
1.138 paf 134: ssize_t sn=(size_t)params.as_int(0, "n must be int", r);
135: if(sn<0)
1.153 misha 136: throw Exception(PARSER_RUNTIME,
1.138 paf 137: 0,
138: "n(%d) must be >=0", sn);
139: size_t n=(size_t)sn;
140:
1.15 paf 141:
1.126 paf 142: const String& string=GET_SELF(r, VString).string();
1.127 paf 143: size_t length=string.length();
144: r.write_assign_lang(n<length?string.mid(length-n, string.length()):string);
1.15 paf 145: }
146:
1.126 paf 147: static void _mid(Request& r, MethodParams& params) {
148: const String& string=GET_SELF(r, VString).string();
1.83 parser 149:
1.138 paf 150: ssize_t sbegin=params.as_int(0, "p must be int", r);
151: if(sbegin<0)
1.153 misha 152: throw Exception(PARSER_RUNTIME,
1.138 paf 153: 0,
154: "p(%d) must be >=0", sbegin);
155: size_t begin=(size_t)sbegin;
156:
157: size_t end;
158: if(params.count()>1) {
159: ssize_t sn=params.as_int(1, "n must be int", r);
160: if(sn<0)
1.153 misha 161: throw Exception(PARSER_RUNTIME,
1.138 paf 162: 0,
163: "n(%d) must be >=0", sn);
164: end=begin+(size_t)sn;
165: } else
166: end=string.length();
1.15 paf 167:
1.138 paf 168: r.write_assign_lang(string.mid(begin, end));
1.15 paf 169: }
170:
1.126 paf 171: static void _pos(Request& r, MethodParams& params) {
172: Value& substr=params.as_no_junction(0, "substr must not be code");
1.16 paf 173:
1.126 paf 174: const String& string=GET_SELF(r, VString).string();
175: r.write_assign_lang(*new VInt((int)string.pos(substr.as_string())));
1.16 paf 176: }
177:
1.128 paf 178: static void split_list(MethodParams& params, int paramIndex,
1.126 paf 179: const String& string,
180: ArrayString& result) {
181: Value& delim_value=params.as_no_junction(paramIndex, "delimiter must not be code");
1.23 paf 182:
1.126 paf 183: size_t pos_after=0;
184: string.split(result, pos_after, delim_value.as_string());
1.19 paf 185: }
186:
1.118 paf 187: #define SPLIT_LEFT 0x0001
188: #define SPLIT_RIGHT 0x0010
189: #define SPLIT_HORIZONTAL 0x0100
190: #define SPLIT_VERTICAL 0x1000
191:
1.126 paf 192: static int split_options(const String* options) {
1.118 paf 193: struct Split_option {
1.126 paf 194: const char* keyL;
195: const char* keyU;
1.118 paf 196: int setBit;
197: int checkBit;
198: } split_option[]={
199: {"l", "L", SPLIT_LEFT, SPLIT_RIGHT}, // 0xVHRL
200: {"r", "R", SPLIT_RIGHT, SPLIT_LEFT},
201: {"h", "H", SPLIT_HORIZONTAL, SPLIT_VERTICAL},
202: {"v", "V", SPLIT_VERTICAL, SPLIT_HORIZONTAL},
1.130 paf 203: {0, 0, 0, 0}
1.118 paf 204: };
205:
206: int result=0;
1.126 paf 207: if(options) {
1.118 paf 208: for(Split_option *o=split_option; o->keyL; o++)
1.126 paf 209: if(options->pos(o->keyL)!=STRING_NOT_FOUND
210: || (o->keyU && options->pos(o->keyU)!=STRING_NOT_FOUND)) {
1.118 paf 211: if(result & o->checkBit)
1.153 misha 212: throw Exception(PARSER_RUNTIME,
1.118 paf 213: options,
214: "conflicting split options");
215: result |= o->setBit;
216: }
217: }
218:
219: return result;
220: }
221:
1.156 misha 222: static Table& split_vertical(ArrayString& pieces, bool right, const String* column_name) {
1.126 paf 223: Table::columns_type columns(new ArrayString);
1.156 misha 224: *columns+=column_name;
1.19 paf 225:
1.126 paf 226: Table& table=*new Table(columns, pieces.count());
1.118 paf 227: if(right) { // right
1.126 paf 228: for(int i=pieces.count(); --i>=0; ) {
229: Table::element_type row(new ArrayString);
230: *row+=pieces[i];
231: table+=row;
1.118 paf 232: }
233: } else { // left
1.126 paf 234: Array_iterator<const String*> i(pieces);
1.118 paf 235: while(i.has_next()) {
1.126 paf 236: Table::element_type row(new ArrayString);
237: *row+=i.next();
238: table+=row;
1.118 paf 239: }
1.61 parser 240: }
1.118 paf 241:
1.126 paf 242: return table;
1.19 paf 243: }
244:
1.128 paf 245: static Table& split_horizontal(ArrayString& pieces, bool right) {
1.126 paf 246: Table& table=*new Table(Table::columns_type(0) /* nameless */);
247: Table::element_type row(new ArrayString(pieces.count()));
1.118 paf 248: if(right) { // right
1.131 paf 249: for(int i=pieces.count(); --i>=0; )
1.126 paf 250: *row+=pieces[i];
1.118 paf 251: } else { // left
1.126 paf 252: for(Array_iterator<const String*> i(pieces); i.has_next(); )
253: *row+=i.next();
1.118 paf 254: }
1.126 paf 255: table+=row;
1.118 paf 256:
1.126 paf 257: return table;
1.118 paf 258: }
259:
1.126 paf 260: static void split_with_options(Request& r, MethodParams& params,
1.118 paf 261: int bits) {
1.126 paf 262: const String& string=GET_SELF(r, VString).string();
1.19 paf 263:
1.126 paf 264: ArrayString pieces;
1.128 paf 265: split_list(params, 0, string, pieces);
1.19 paf 266:
1.118 paf 267: if(!bits) {
1.126 paf 268: const String* options=0;
269: if(params.count()>1)
270: options=¶ms.as_string(1, "options must not be code");
271:
1.118 paf 272: bits=split_options(options);
273: }
1.21 paf 274:
1.118 paf 275: bool right=(bits & SPLIT_RIGHT) != 0;
276: bool horizontal=(bits & SPLIT_HORIZONTAL) !=0;
1.156 misha 277:
278: const String* column_name=0;
279: if(params.count()>2){
280: column_name=¶ms.as_string(2, COLUMN_NAME_MUST_BE_STRING);
281: if (horizontal && column_name->length())
282: throw Exception(PARSER_RUNTIME,
283: column_name,
284: "column name can't be specified with horisontal split");
285: }
286: if(!column_name || !column_name->length())
287: column_name=new String("piece");
288:
289: Table& table=horizontal?split_horizontal(pieces, right):split_vertical(pieces, right, column_name);
1.17 paf 290:
1.126 paf 291: r.write_no_lang(*new VTable(&table));
1.118 paf 292: }
1.126 paf 293: static void _split(Request& r, MethodParams& params) {
294: split_with_options(r, params, 0 /* maybe-determine from param #2 */);
1.118 paf 295: }
1.126 paf 296: static void _lsplit(Request& r, MethodParams& params) {
297: split_with_options(r, params, SPLIT_LEFT);
1.118 paf 298: }
1.126 paf 299: static void _rsplit(Request& r, MethodParams& params) {
300: split_with_options(r, params, SPLIT_RIGHT);
1.17 paf 301: }
302:
1.126 paf 303: static void search_action(Table& table, Table::element_type row, int, int, int, int, void *) {
1.28 paf 304: if(row)
305: table+=row;
1.27 paf 306: }
307:
1.74 parser 308: #ifndef DOXYGEN
1.27 paf 309: struct Replace_action_info {
1.126 paf 310: Request* request;
311: const String* src; String* dest;
312: VTable* vtable;
313: Value* replacement_code;
1.27 paf 314: };
1.74 parser 315: #endif
1.105 paf 316: /// @todo they can do $global[$result] there, getting pointer to later-invalid local var, kill this
1.126 paf 317: static void replace_action(Table& table, ArrayString* row,
318: int prestart, int prefinish,
319: int poststart, int postfinish,
320: void *info) {
1.27 paf 321: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 322: if(row) { // begin&middle
1.104 paf 323: // piece from last match['prestart'] to beginning of this match['prefinish']
324: if(prestart!=prefinish)
325: *ai.dest << ai.src->mid(prestart, prefinish);//ai.dest->APPEND_CONST("-");
1.51 parser 326: // store found parts in one-record VTable
1.126 paf 327: if(table.count()) // middle
1.32 paf 328: table.put(0, row);
329: else // begin
1.30 paf 330: table+=row;
331: { // execute 'replacement_code' in 'table' context
1.105 paf 332: ai.vtable->set_table(table);
1.30 paf 333:
1.105 paf 334: *ai.dest << ai.request->process_to_string(*ai.replacement_code);
1.29 paf 335: }
336: } else // end
1.104 paf 337: *ai.dest << ai.src->mid(poststart, postfinish);
1.27 paf 338: }
339:
1.50 parser 340: /// @todo use pcre:study somehow
1.126 paf 341: static void _match(Request& r, MethodParams& params) {
342: Value& regexp=params.as_no_junction(0, "regexp must not be code");
343:
344: const String* options=
345: params.count()>1?
346: ¶ms.as_no_junction(1, "options must not be code").as_string():0;
347:
348: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
349: const String& src=GET_SELF(r, VString).string();
1.152 misha 350: int matches_count=0;
1.126 paf 351: if(params.count()<3) { // search
352: Table* table=src.match(r.charsets.source(),
1.32 paf 353: regexp.as_string(), options,
1.64 parser 354: search_action, 0,
1.152 misha 355: matches_count);
356: // r.write_assign_lang(*new VTable(table));
357: if(table){
1.150 misha 358: r.write_assign_lang(*new VTable(table));
1.152 misha 359: } else {
360: r.write_assign_lang(*new VInt(matches_count));
361: }
362:
1.27 paf 363: } else { // replace
1.126 paf 364: Value& replacement_code=params.as_junction(2, "replacement param must be code");
1.106 paf 365:
1.126 paf 366: String result;
367: VTable* vtable=new VTable;
1.130 paf 368: Replace_action_info info={
369: &r,
370: &src,
371: &result,
372: vtable,
373: &replacement_code
374: };
1.105 paf 375: Temp_value_element temp_match_var(
1.119 paf 376: *replacement_code.get_junction()->method_frame,
1.126 paf 377: match_var_name, vtable);
378: src.match(r.charsets.source(),
1.99 paf 379: r.process_to_string(regexp), options,
1.126 paf 380: replace_action, &info,
1.152 misha 381: matches_count);
1.102 paf 382: r.write_assign_lang(result);
1.27 paf 383: }
1.24 paf 384: }
385:
1.128 paf 386: static void change_case(Request& r, MethodParams&,
1.49 parser 387: String::Change_case_kind kind) {
1.126 paf 388: const String& src=GET_SELF(r, VString).string();
1.49 parser 389:
1.126 paf 390: r.write_assign_lang(src.change_case(r.charsets.source(), kind));
1.49 parser 391: }
1.126 paf 392: static void _upper(Request& r, MethodParams& params) {
393: change_case(r, params, String::CC_UPPER);
1.49 parser 394: }
1.126 paf 395: static void _lower(Request& r, MethodParams& params) {
396: change_case(r, params, String::CC_LOWER);
1.49 parser 397: }
398:
1.65 parser 399: #ifndef DOXYGEN
1.126 paf 400: class String_sql_event_handlers: public SQL_Driver_query_event_handlers {
401: const String& statement_string; const char* statement_cstr;
402: bool got_column;
1.65 parser 403: public:
1.126 paf 404: bool got_cell;
405: String& result;
406: public:
407: String_sql_event_handlers(
408: const String& astatement_string, const char* astatement_cstr):
409: statement_string(astatement_string), statement_cstr(astatement_cstr),
410: got_column(false),
411: got_cell(false),
412: result(*new String) {}
1.65 parser 413:
1.128 paf 414: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
1.124 paf 415: if(got_column) {
1.153 misha 416: error=SQL_Error(PARSER_RUNTIME,
1.126 paf 417: //statement_string,
1.65 parser 418: "result must contain exactly one column");
1.124 paf 419: return true;
420: }
1.65 parser 421: got_column=true;
1.124 paf 422: return false;
1.65 parser 423: }
1.124 paf 424: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
425: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
1.126 paf 426: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.124 paf 427: if(got_cell) {
1.153 misha 428: error=SQL_Error(PARSER_RUNTIME,
1.126 paf 429: //statement_string,
1.65 parser 430: "result must not contain more then one row");
1.124 paf 431: return true;
432: }
1.65 parser 433:
1.124 paf 434: try {
435: got_cell=true;
1.126 paf 436: result.append_know_length(str, length, String::L_TAINTED);
1.124 paf 437: return false;
438: } catch(...) {
439: error=SQL_Error("exception occured in String_sql_event_handlers::add_row_cell");
440: return true;
441: }
1.65 parser 442: }
443: };
444: #endif
1.141 paf 445: extern String sql_bind_name;
1.126 paf 446: extern String sql_limit_name;
447: extern String sql_offset_name;
448: extern String sql_default_name;
449: extern String sql_distinct_name;
1.141 paf 450: extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders);
451: extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders);
452:
1.126 paf 453: const String* sql_result_string(Request& r, MethodParams& params,
454: HashStringValue*& options, Value*& default_code) {
455: Value& statement=params.as_junction(0, "statement must be code");
1.53 parser 456:
1.141 paf 457: HashStringValue* bind=0;
1.70 parser 458: ulong limit=0;
459: ulong offset=0;
1.81 parser 460: default_code=0;
1.126 paf 461: if(params.count()>1) {
462: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.145 paf 463: if(voptions.is_defined() && !voptions.is_string())
1.130 paf 464: if((options=voptions.get_hash())) {
1.141 paf 465: int valid_options=0;
466: if(Value* vbind=options->get(sql_bind_name)) {
467: valid_options++;
468: bind=vbind->get_hash();
469: }
470: if(Value* vlimit=options->get(sql_limit_name)) {
471: valid_options++;
1.99 paf 472: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.141 paf 473: }
474: if(Value* voffset=options->get(sql_offset_name)) {
475: valid_options++;
1.99 paf 476: offset=(ulong)r.process_to_value(*voffset).as_double();
1.141 paf 477: }
1.130 paf 478: if((default_code=options->get(sql_default_name))) {
1.141 paf 479: valid_options++;
1.81 parser 480: }
1.141 paf 481: if(valid_options!=options->count())
1.153 misha 482: throw Exception(PARSER_RUNTIME,
1.141 paf 483: 0,
484: "called with invalid option");
1.73 parser 485: } else
1.153 misha 486: throw Exception(PARSER_RUNTIME,
1.126 paf 487: 0,
1.73 parser 488: "options must be hash");
1.70 parser 489: } else
490: options=0;
491:
1.141 paf 492: SQL_Driver::Placeholder* placeholders=0;
493: uint placeholders_count=0;
494: if(bind)
495: placeholders_count=marshal_binds(*bind, placeholders);
496:
1.126 paf 497: Temp_lang temp_lang(r, String::L_SQL);
1.99 paf 498: const String& statement_string=r.process_to_string(statement);
1.126 paf 499: const char* statement_cstr=
500: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
501: String_sql_event_handlers handlers(statement_string, statement_cstr);
502: r.connection()->query(
1.140 paf 503: statement_cstr,
1.142 paf 504: placeholders_count, placeholders,
1.140 paf 505: offset, limit,
1.117 paf 506: handlers,
507: statement_string);
1.53 parser 508:
1.141 paf 509: if(bind)
510: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
511:
1.65 parser 512: if(!handlers.got_cell)
513: return 0; // no lines, caller should return second param[default value]
1.62 parser 514:
1.126 paf 515: return &handlers.result;
1.53 parser 516: }
517:
1.126 paf 518: static void _sql(Request& r, MethodParams& params) {
1.53 parser 519:
1.126 paf 520: HashStringValue* options;
521: Value* default_code;
522: const String* string=sql_result_string(r, params, options, default_code);
1.62 parser 523: if(!string) {
1.81 parser 524: if(default_code) {
1.99 paf 525: string=&r.process_to_string(*default_code);
1.68 parser 526: } else
1.153 misha 527: throw Exception(PARSER_RUNTIME,
1.126 paf 528: 0,
1.81 parser 529: "produced no result, but no default option specified");
1.62 parser 530: }
1.100 paf 531:
1.102 paf 532: r.write_assign_lang(*string);
1.53 parser 533: }
534:
1.126 paf 535: static void _replace(Request& r, MethodParams& params) {
536: const String& src=GET_SELF(r, VString).string();
1.71 parser 537:
1.157 ! misha 538: Table* table=params.as_no_junction(0, PARAM_MUST_NOT_BE_CODE).get_table();
1.71 parser 539: if(!table)
1.153 misha 540: throw Exception(PARSER_RUNTIME,
1.126 paf 541: 0,
1.71 parser 542: "parameter must be table");
543:
544: Dictionary dict(*table);
1.126 paf 545: r.write_assign_lang(src.replace(dict));
1.71 parser 546: }
1.79 parser 547:
1.126 paf 548: static void _save(Request& r, MethodParams& params) {
1.154 misha 549: const String& file_name=params.as_string(params.count()-1, FILE_NAME_MUST_BE_STRING);
1.79 parser 550:
1.126 paf 551: const String& src=GET_SELF(r, VString).string();
1.79 parser 552:
1.87 paf 553: bool do_append=false;
1.126 paf 554: if(params.count()>1) {
555: const String& mode=params.as_string(0, "mode must be string");
1.87 paf 556: if(mode=="append")
557: do_append=true;
558: else
1.153 misha 559: throw Exception(PARSER_RUNTIME,
1.87 paf 560: &mode,
561: "unknown mode, must be 'append'");
562: }
563:
1.79 parser 564: // write
1.126 paf 565: const char* buf=src.cstr(String::L_UNSPECIFIED, r.connection(false/*no error if none*/));
1.94 paf 566: file_write(r.absolute(file_name),
1.89 paf 567: buf, strlen(buf), true, do_append);
1.79 parser 568: }
569:
1.126 paf 570: static void _normalize(Request& r, MethodParams&) {
571: const String& src=GET_SELF(r, VString).string();
572:
573: r.write_assign_lang(src);
1.109 paf 574: }
575:
1.133 paf 576: static void _trim(Request& r, MethodParams& params) {
577: const String& src=GET_SELF(r, VString).string();
578:
579: String::Trim_kind kind=String::TRIM_BOTH;
580: const char* chars=0;
581: if(params.count()>0) {
1.135 paf 582: const String& skind=params.as_string(0,
583: "'where' must be string");
1.137 paf 584: if(skind.length())
585: if(skind==TRIM_START_OPTION)
586: kind=String::TRIM_START;
587: else if(skind==TRIM_END_OPTION)
588: kind=String::TRIM_END;
589: else if(skind==TRIM_BOTH_OPTION)
590: kind=String::TRIM_BOTH;
591: else
1.153 misha 592: throw Exception(PARSER_RUNTIME,
1.137 paf 593: &skind,
594: "'kind' must be one of "TRIM_START_OPTION", "TRIM_BOTH_OPTION", "TRIM_END_OPTION);
1.133 paf 595:
1.136 paf 596: if(params.count()>1) {
597: const String& schars=params.as_string(1, "'chars' must be string");
1.137 paf 598: if(schars.length())
599: chars=schars.cstr();
1.136 paf 600: }
1.133 paf 601: }
602:
603: r.write_assign_lang(src.trim(kind, chars));
604: }
605:
1.139 paf 606: static void _append(Request& r, MethodParams& params) {
607: // c=a+b
608: VString& va=GET_SELF(r, VString);
609: const String& a=va.string();
1.155 misha 610: const String& b=params.as_string(0, PARAMETER_MUST_BE_STRING);
1.139 paf 611: String& c=*new String(a);
612: c.append(b, String::L_PASS_APPENDED);
613: va.set_string(c);
614: }
615:
1.146 paf 616: static void _base64(Request& r, MethodParams& params) {
617: if(params.count()) {
1.147 paf 618: // decode
1.155 misha 619: const char* cstr=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.148 paf 620: char* decoded_cstr=0;
1.146 paf 621: size_t decoded_size=0;
622: pa_base64_decode(cstr, strlen(cstr), decoded_cstr, decoded_size);
623: if(decoded_cstr && decoded_size)
1.148 paf 624: r.write_assign_lang(*new String(decoded_cstr, decoded_size, true));
1.147 paf 625: } else {
626: // encode
1.148 paf 627: VString& self=GET_SELF(r, VString);
628: const char* cstr=self.string().cstr();
1.147 paf 629: const char* encoded=pa_base64_encode(cstr, strlen(cstr));
630: r.write_assign_lang(*new String(encoded, 0, true/*once ?param=base64(something) was needed*/));
1.146 paf 631: }
632: }
633:
1.41 paf 634: // constructor
635:
1.126 paf 636: MString::MString(): Methoded("string") {
1.1 paf 637: // ^string.length[]
1.41 paf 638: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 639:
1.1 paf 640: // ^string.int[]
1.72 parser 641: // ^string.int(default)
642: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.1 paf 643: // ^string.double[]
1.72 parser 644: // ^string.double(default)
645: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.151 misha 646: // ^void.bool[]
647: // ^void.bool(default)
648: add_native_method("bool", Method::CT_DYNAMIC, _bool, 0, 1);
1.9 paf 649:
1.24 paf 650: // ^string.format{format}
1.41 paf 651: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 652:
1.15 paf 653: // ^string.left(n)
1.41 paf 654: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 655: // ^string.right(n)
1.41 paf 656: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.15 paf 657: // ^string.mid(p;n)
1.82 parser 658: add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2);
1.16 paf 659:
660: // ^string.pos[substr]
1.41 paf 661: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1);
1.17 paf 662:
1.118 paf 663: // ^string.split[delim]
664: // ^string.split[delim][options]
1.156 misha 665: // ^string.split[delim][options][column name]
666: add_native_method("split", Method::CT_DYNAMIC, _split, 1, 3);
1.118 paf 667: // old names for backward compatibility
668: // ^string.lsplit[delim]
669: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
670: // ^string.rsplit[delim]
671: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
672:
1.32 paf 673: // ^string.match[regexp][options]
674: // ^string.match[regexp][options]{replacement-code}
1.41 paf 675: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3);
1.49 parser 676:
677: // ^string.toupper[]
678: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
679: // ^string.tolower[]
680: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 681:
1.70 parser 682: // ^sql[query]
1.141 paf 683: // ^sql[query][options hash]
1.67 parser 684: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.71 parser 685:
686: // ^string.replace[table]
687: add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 1);
1.79 parser 688:
689: // ^string.save[file]
1.87 paf 690: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.109 paf 691:
1.112 paf 692: // ^string.normalize[]
693: add_native_method("normalize", Method::CT_DYNAMIC, _normalize, 0, 0);
1.133 paf 694:
695: // ^string.trim[[start|both|end][;chars]]
696: add_native_method("trim", Method::CT_DYNAMIC, _trim, 0, 2);
1.139 paf 697:
698: // ^string.append[string]
699: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.146 paf 700:
701: // ^string.base64[] << encode
1.147 paf 702: // ^string:base64[encoded string] << decode
1.146 paf 703: add_native_method("base64", Method::CT_ANY, _base64, 0, 1);
1.2 paf 704: }
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