Annotation of parser3/src/classes/string.C, revision 1.56
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)
1.24 paf 5:
1.5 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.4 paf 7:
1.56 ! parser 8: $Id: string.C,v 1.55 2001/05/21 17:11:57 parser Exp $
1.1 paf 9: */
10:
1.43 paf 11: #include "classes.h"
1.1 paf 12: #include "pa_request.h"
13: #include "pa_vdouble.h"
14: #include "pa_vint.h"
1.17 paf 15: #include "pa_vtable.h"
1.25 paf 16: #include "pa_vbool.h"
1.27 paf 17: #include "pa_string.h"
1.53 parser 18: #include "pa_sql_connection.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:
1.47 paf 42: static void _int(Request& r, const String& method_name, MethodParams *) {
1.1 paf 43: Pool& pool=r.pool();
1.48 parser 44: Value& result=*new(pool) VInt(pool, r.self->as_int());
1.47 paf 45: result.set_name(method_name);
46: r.write_no_lang(result);
1.1 paf 47: }
48:
1.47 paf 49: static void _double(Request& r, const String& method_name, MethodParams *) {
1.1 paf 50: Pool& pool=r.pool();
1.47 paf 51: Value& result=*new(pool) VDouble(pool, r.self->as_double());
52: result.set_name(method_name);
53: r.write_no_lang(result);
1.1 paf 54: }
55:
1.38 paf 56: /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 57: Pool& pool=r.pool();
58:
1.38 paf 59: Value& fmt=params->get_junction(0, "fmt must be code");
1.9 paf 60:
1.24 paf 61: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
62: char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr());
1.9 paf 63:
1.12 paf 64: r.write_no_lang(String(pool, buf));
1.9 paf 65: }
1.11 paf 66:
1.38 paf 67: static void _left(Request& r, const String&, MethodParams *params) {
1.15 paf 68: Pool& pool=r.pool();
69:
1.38 paf 70: size_t n=(size_t)r.process(params->get(0)).as_double();
1.15 paf 71:
72: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 73: r.write_assign_lang(*new(pool) VString(string.mid(0, n)));
1.15 paf 74: }
75:
1.38 paf 76: static void _right(Request& r, const String&, MethodParams *params) {
1.15 paf 77: Pool& pool=r.pool();
78:
1.38 paf 79: size_t n=(size_t)r.process(params->get(0)).as_double();
1.15 paf 80:
81: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 82: r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));
1.15 paf 83: }
84:
1.38 paf 85: static void _mid(Request& r, const String&, MethodParams *params) {
1.15 paf 86: Pool& pool=r.pool();
87:
1.38 paf 88: size_t p=(size_t)r.process(params->get(0)).as_double();
89: size_t n=(size_t)r.process(params->get(1)).as_double();
1.15 paf 90:
91: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 92: r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));
1.15 paf 93: }
94:
1.38 paf 95: static void _pos(Request& r, const String& method_name, MethodParams *params) {
1.16 paf 96: Pool& pool=r.pool();
97:
1.38 paf 98: Value& substr=params->get_no_junction(0, "substr must not be code");
1.16 paf 99:
100: const String& string=*static_cast<VString *>(r.self)->get_string();
101: r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));
102: }
103:
1.38 paf 104: static void split_list(Request& r, const String& method_name, MethodParams *params,
1.23 paf 105: const String& string,
106: Array& result) {
1.38 paf 107: Value& delim_value=params->get_no_junction(0, "delimiter must not be code");
1.23 paf 108:
1.45 paf 109: string.split(result, 0, delim_value.as_string());
1.19 paf 110: }
111:
1.38 paf 112: static void _lsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 113: Pool& pool=r.pool();
114: const String& string=*static_cast<VString *>(r.self)->get_string();
115:
1.21 paf 116: Array& row=*new(pool) Array(pool);
117: split_list(r, method_name, params, string, row);
1.19 paf 118:
1.21 paf 119: Table& table=*new(pool) Table(pool, &string,
120: 0/*nameless*/, 1/*row preallocate(and only)*/);
121: table+=&row;
1.19 paf 122:
123: r.write_no_lang(*new(pool) VTable(pool, &table));
124: }
125:
1.38 paf 126: static void _rsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 127: Pool& pool=r.pool();
128: const String& string=*static_cast<VString *>(r.self)->get_string();
129:
130: Array list(pool);
131: split_list(r, method_name, params, string, list);
132:
1.21 paf 133: Array& row=*new(pool) Array(pool);
134: for(int i=list.size(); --i>=0; )
135: row+=list.get(i);
136:
137: Table& table=*new(pool) Table(pool, &string,
138: 0/*nameless*/, 1/*row preallocate(and only)*/);
139: table+=&row;
1.17 paf 140:
1.19 paf 141: r.write_no_lang(*new(pool) VTable(pool, &table));
1.17 paf 142: }
143:
1.33 paf 144: static void search_action(Table& table, Array *row, int, int, void *) {
1.28 paf 145: if(row)
146: table+=row;
1.27 paf 147: }
148:
1.40 paf 149: /// used by string: _match / replace_action
1.27 paf 150: struct Replace_action_info {
1.30 paf 151: Request *request; const String *origin;
1.31 paf 152: const String *src; String *dest;
1.27 paf 153: Value *replacement_code;
1.29 paf 154: const String *post_match;
1.27 paf 155: };
1.33 paf 156: static void replace_action(Table& table, Array *row, int start, int finish,
1.31 paf 157: void *info) {
1.27 paf 158: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 159: if(row) { // begin&middle
160: // piece from last match['start'] to beginning of this match['finish']
161: if(start!=finish)
1.37 paf 162: *ai.dest << ai.src->mid(start, finish);//ai.dest->APPEND_CONST("-");
1.51 parser 163: // store found parts in one-record VTable
1.32 paf 164: if(table.size()) // middle
165: table.put(0, row);
166: else // begin
1.30 paf 167: table+=row;
168: { // execute 'replacement_code' in 'table' context
169: VTable& vtable=*new(table.pool()) VTable(table.pool(), &table);
170: vtable.set_name(*ai.origin);
171:
172: Junction *junction=ai.replacement_code->get_junction();
1.52 parser 173: junction->rcontext=/*must be some way to get to
174: outside world junction->root=*/&vtable;
1.30 paf 175: Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false);
176:
1.34 paf 177: /*
1.31 paf 178: ai.dest->APPEND_CONST("(");
1.37 paf 179: *ai.dest << *(String *)row->get(1/*match* /);
1.31 paf 180: ai.dest->APPEND_CONST(")");
1.34 paf 181: */
1.37 paf 182: *ai.dest << replaced.as_string();
1.29 paf 183: }
184: ai.post_match=(String *)row->get(2/*post_match*/);
185: } else // end
1.37 paf 186: *ai.dest << *ai.post_match;
1.27 paf 187: }
188:
1.50 parser 189: /// @todo use pcre:study somehow
1.38 paf 190: static void _match(Request& r, const String& method_name, MethodParams *params) {
1.24 paf 191: Pool& pool=r.pool();
1.28 paf 192: const String& src=*static_cast<VString *>(r.self)->get_string();
1.24 paf 193:
1.38 paf 194: Value& regexp=params->get_no_junction(0, "regexp must not be code");
195:
196: const String *options=
197: params->size()>1?
198: ¶ms->get_no_junction(1, "options must not be code").as_string():0;
1.24 paf 199:
1.27 paf 200: Value *result;
1.24 paf 201: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.25 paf 202: Table *table;
1.27 paf 203: if(params->size()<3) { // search
1.39 paf 204: if(src.match(r.pcre_tables,
205: &method_name,
1.32 paf 206: regexp.as_string(), options,
1.27 paf 207: &table,
1.33 paf 208: search_action, 0)) {
1.27 paf 209: // matched
210: if(table->columns()->size()==3 && // just matched[3=pre/match/post], no substrings
211: table->size()==1) // just one row, not /g_lobal search
212: result=new(pool) VBool(pool, true);
213: else // table of pre/match/post+substrings
214: result=new(pool) VTable(pool, table);
215: } else // not matched [not global]
216: result=new(pool) VBool(pool, false);
217: } else { // replace
1.38 paf 218: Value& replacement_code=params->get_junction(2, "replacement code must be code");
1.24 paf 219:
1.28 paf 220: String& dest=*new(pool) String(pool);
1.27 paf 221: Replace_action_info replace_action_info={
1.30 paf 222: &r, &method_name,
1.31 paf 223: &src, &dest,
1.28 paf 224: &replacement_code,
1.29 paf 225: &src
1.27 paf 226: };
1.39 paf 227: src.match(r.pcre_tables,
228: &method_name,
1.27 paf 229: r.process(regexp).as_string(), options,
230: &table,
1.33 paf 231: replace_action, &replace_action_info);
1.28 paf 232: result=new(pool) VString(dest);
1.27 paf 233: }
1.26 paf 234: result->set_name(method_name);
1.34 paf 235: r.write_assign_lang(*result);
1.24 paf 236: }
237:
1.49 parser 238: static void change_case(Request& r, const String& method_name, MethodParams *params,
239: String::Change_case_kind kind) {
240: Pool& pool=r.pool();
241: const String& src=*static_cast<VString *>(r.self)->get_string();
242:
243: r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables,
244: kind)));
245: }
246: static void _upper(Request& r, const String& method_name, MethodParams *params) {
247: change_case(r, method_name, params, String::CC_UPPER);
248: }
249: static void _lower(Request& r, const String& method_name, MethodParams *params) {
250: change_case(r, method_name, params, String::CC_LOWER);
251: }
252:
1.53 parser 253: String& sql_result_string(Request& r, const String& method_name, MethodParams *params) {
254: Pool& pool=r.pool();
255:
256: if(!r.connection)
257: PTHROW(0, 0,
258: &method_name,
259: "without connect");
260:
261: Value& statement=params->get_junction(0, "statement must be code");
262:
263: ulong offset=0;
264: if(params->size()>1) {
265: Value& offset_code=params->get_junction(1, "offset must be expression");
266: offset=(ulong)r.process(offset_code).as_double();
267: }
268:
269: Temp_lang temp_lang(r, String::UL_SQL);
270: const String& statement_string=r.process(statement).as_string();
271: const char *statement_cstr=
272: statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
273: unsigned int sql_column_count; SQL_Driver::Cell *sql_columns;
274: unsigned long sql_row_count; SQL_Driver::Cell **sql_rows;
275: bool need_rethrow=false; Exception rethrow_me;
276: PTRY {
277: r.connection->query(
278: statement_cstr, offset, 0,
279: &sql_column_count, &sql_columns,
280: &sql_row_count, &sql_rows);
281: }
282: PCATCH(e) { // query problem
283: rethrow_me=e; need_rethrow=true;
284: }
285: PEND_CATCH
286: if(need_rethrow)
287: PTHROW(rethrow_me.type(), rethrow_me.code(),
288: &statement_string, // setting more specific source [were url]
289: rethrow_me.comment());
290:
291: if(sql_column_count!=1)
292: PTHROW(0, 0,
293: &statement_string,
1.56 ! parser 294: "result must contain exactly one column");
1.53 parser 295:
296: if(sql_row_count!=1)
297: PTHROW(0, 0,
298: &statement_string,
1.56 ! parser 299: "result must contain exactly one row");
1.53 parser 300:
301: String& result=*new(pool) String(pool);
302: SQL_Driver::Cell& cell=sql_rows[0][0];
303: result.APPEND_TAINTED(
304: (const char *)cell.ptr, cell.size,
305: statement_cstr, 0);
306:
307: return result;
308: }
309:
310: static void _sql(Request& r, const String& method_name, MethodParams *params) {
311: Pool& pool=r.pool();
312:
313: VString& result=*new(pool) VString(sql_result_string(r, method_name, params));
314: result.set_name(method_name);
315: r.write_assign_lang(result);
316: }
317:
1.41 paf 318: // constructor
319:
320: MString::MString(Pool& apool) : Methoded(apool) {
321: set_name(*NEW String(pool(), STRING_CLASS_NAME));
322:
1.9 paf 323:
1.1 paf 324: // ^string.length[]
1.41 paf 325: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 326:
1.1 paf 327: // ^string.int[]
1.41 paf 328: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0);
1.6 paf 329:
1.1 paf 330: // ^string.double[]
1.41 paf 331: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0);
1.9 paf 332:
1.24 paf 333: // ^string.format{format}
1.41 paf 334: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 335:
1.15 paf 336: // ^string.left(n)
1.41 paf 337: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 338: // ^string.right(n)
1.41 paf 339: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.15 paf 340: // ^string.mid(p;n)
1.41 paf 341: add_native_method("mid", Method::CT_DYNAMIC, _mid, 2, 2);
1.16 paf 342:
343: // ^string.pos[substr]
1.41 paf 344: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1);
1.17 paf 345:
346: // ^string.lsplit[delim]
1.41 paf 347: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
1.19 paf 348: // ^string.rsplit[delim]
1.41 paf 349: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
1.24 paf 350:
1.32 paf 351: // ^string.match[regexp][options]
352: // ^string.match[regexp][options]{replacement-code}
1.41 paf 353: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3);
1.49 parser 354:
355: // ^string.toupper[]
356: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
357: // ^string.tolower[]
358: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 359:
360: // ^string:sql[query]
361: // ^string:sql[query](offset)
1.54 parser 362: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.2 paf 363: }
1.1 paf 364:
1.41 paf 365: // global variable
366:
367: Methoded *string_class;
368:
369: // creator
370:
371: Methoded *MString_create(Pool& pool) {
372: return string_class=new(pool) MString(pool);
373: }
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