Annotation of parser3/src/classes/string.C, revision 1.63
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)
1.1 paf 7: */
1.63 ! parser 8: static const char *RCSId="$Id: string.C,v 1.62 2001/07/13 12:13:50 parser Exp $";
1.1 paf 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"
1.1 paf 18:
1.41 paf 19: // defines
1.1 paf 20:
1.41 paf 21: #define STRING_CLASS_NAME "string"
22:
23: // class
24:
25: class MString : public Methoded {
26: public:
27: MString(Pool& pool);
1.44 paf 28: public: // Methoded
1.53 parser 29: bool used_directly() { return true; }
1.41 paf 30: };
1.1 paf 31:
32: // methods
33:
1.47 paf 34: static void _length(Request& r, const String& method_name, MethodParams *) {
1.1 paf 35: Pool& pool=r.pool();
1.47 paf 36: Value& result=*new(pool) VDouble(pool, r.self->get_string()->size());
37: result.set_name(method_name);
38: r.write_no_lang(result);
1.1 paf 39: }
40:
1.47 paf 41: static void _int(Request& r, const String& method_name, MethodParams *) {
1.1 paf 42: Pool& pool=r.pool();
1.48 parser 43: Value& result=*new(pool) VInt(pool, r.self->as_int());
1.47 paf 44: result.set_name(method_name);
45: r.write_no_lang(result);
1.1 paf 46: }
47:
1.47 paf 48: static void _double(Request& r, const String& method_name, MethodParams *) {
1.1 paf 49: Pool& pool=r.pool();
1.47 paf 50: Value& result=*new(pool) VDouble(pool, r.self->as_double());
51: result.set_name(method_name);
52: r.write_no_lang(result);
1.1 paf 53: }
54:
1.38 paf 55: /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 56: Pool& pool=r.pool();
57:
1.59 parser 58: Value& fmt=params->as_junction(0, "fmt must be code");
1.9 paf 59:
1.24 paf 60: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
61: char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr());
1.63 ! parser 62:
! 63: String result(pool);
! 64: result.APPEND_CLEAN(buf, 0,
! 65: method_name.origin().file,
! 66: method_name.origin().line);
! 67: r.write_no_lang(result);
1.9 paf 68: }
1.11 paf 69:
1.38 paf 70: static void _left(Request& r, const String&, MethodParams *params) {
1.15 paf 71: Pool& pool=r.pool();
72:
1.38 paf 73: size_t n=(size_t)r.process(params->get(0)).as_double();
1.15 paf 74:
75: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 76: r.write_assign_lang(*new(pool) VString(string.mid(0, n)));
1.15 paf 77: }
78:
1.38 paf 79: static void _right(Request& r, const String&, MethodParams *params) {
1.15 paf 80: Pool& pool=r.pool();
81:
1.38 paf 82: size_t n=(size_t)r.process(params->get(0)).as_double();
1.15 paf 83:
84: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 85: r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));
1.15 paf 86: }
87:
1.38 paf 88: static void _mid(Request& r, const String&, MethodParams *params) {
1.15 paf 89: Pool& pool=r.pool();
90:
1.38 paf 91: size_t p=(size_t)r.process(params->get(0)).as_double();
92: size_t n=(size_t)r.process(params->get(1)).as_double();
1.15 paf 93:
94: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 95: r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));
1.15 paf 96: }
97:
1.38 paf 98: static void _pos(Request& r, const String& method_name, MethodParams *params) {
1.16 paf 99: Pool& pool=r.pool();
100:
1.59 parser 101: Value& substr=params->as_no_junction(0, "substr must not be code");
1.16 paf 102:
103: const String& string=*static_cast<VString *>(r.self)->get_string();
104: r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));
105: }
106:
1.38 paf 107: static void split_list(Request& r, const String& method_name, MethodParams *params,
1.23 paf 108: const String& string,
109: Array& result) {
1.59 parser 110: Value& delim_value=params->as_no_junction(0, "delimiter must not be code");
1.23 paf 111:
1.45 paf 112: string.split(result, 0, delim_value.as_string());
1.19 paf 113: }
114:
1.38 paf 115: static void _lsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 116: Pool& pool=r.pool();
117: const String& string=*static_cast<VString *>(r.self)->get_string();
118:
1.61 parser 119: Array pieces(pool);
120: split_list(r, method_name, params, string, pieces);
121:
122: Array& columns=*new(pool) Array(pool);
123: columns+=new(pool) String(pool, "piece");
1.19 paf 124:
1.21 paf 125: Table& table=*new(pool) Table(pool, &string,
1.61 parser 126: &columns, pieces.size());
127: int size=pieces.quick_size();
128: for(int i=0; i<size; i++) {
129: Array& row=*new(pool) Array(pool);
130: row+=pieces.quick_get(i);
131: table+=&row;
132: }
1.19 paf 133: r.write_no_lang(*new(pool) VTable(pool, &table));
134: }
135:
1.38 paf 136: static void _rsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 137: Pool& pool=r.pool();
138: const String& string=*static_cast<VString *>(r.self)->get_string();
139:
1.61 parser 140: Array pieces(pool);
141: split_list(r, method_name, params, string, pieces);
1.19 paf 142:
1.61 parser 143: Array& columns=*new(pool) Array(pool);
144: columns+=new(pool) String(pool, "piece");
1.21 paf 145:
146: Table& table=*new(pool) Table(pool, &string,
1.61 parser 147: &columns, pieces.size());
148: for(int i=pieces.size(); --i>=0; ) {
149: Array& row=*new(pool) Array(pool);
150: row+=pieces.get(i);
151: table+=&row;
152: }
1.17 paf 153:
1.19 paf 154: r.write_no_lang(*new(pool) VTable(pool, &table));
1.17 paf 155: }
156:
1.33 paf 157: static void search_action(Table& table, Array *row, int, int, void *) {
1.28 paf 158: if(row)
159: table+=row;
1.27 paf 160: }
161:
1.40 paf 162: /// used by string: _match / replace_action
1.27 paf 163: struct Replace_action_info {
1.30 paf 164: Request *request; const String *origin;
1.31 paf 165: const String *src; String *dest;
1.27 paf 166: Value *replacement_code;
1.29 paf 167: const String *post_match;
1.27 paf 168: };
1.33 paf 169: static void replace_action(Table& table, Array *row, int start, int finish,
1.31 paf 170: void *info) {
1.27 paf 171: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 172: if(row) { // begin&middle
173: // piece from last match['start'] to beginning of this match['finish']
174: if(start!=finish)
1.37 paf 175: *ai.dest << ai.src->mid(start, finish);//ai.dest->APPEND_CONST("-");
1.51 parser 176: // store found parts in one-record VTable
1.32 paf 177: if(table.size()) // middle
178: table.put(0, row);
179: else // begin
1.30 paf 180: table+=row;
181: { // execute 'replacement_code' in 'table' context
182: VTable& vtable=*new(table.pool()) VTable(table.pool(), &table);
183: vtable.set_name(*ai.origin);
184:
185: Junction *junction=ai.replacement_code->get_junction();
1.52 parser 186: junction->rcontext=/*must be some way to get to
187: outside world junction->root=*/&vtable;
1.30 paf 188: Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false);
189:
1.34 paf 190: /*
1.31 paf 191: ai.dest->APPEND_CONST("(");
1.37 paf 192: *ai.dest << *(String *)row->get(1/*match* /);
1.31 paf 193: ai.dest->APPEND_CONST(")");
1.34 paf 194: */
1.37 paf 195: *ai.dest << replaced.as_string();
1.29 paf 196: }
197: ai.post_match=(String *)row->get(2/*post_match*/);
198: } else // end
1.37 paf 199: *ai.dest << *ai.post_match;
1.27 paf 200: }
201:
1.50 parser 202: /// @todo use pcre:study somehow
1.38 paf 203: static void _match(Request& r, const String& method_name, MethodParams *params) {
1.24 paf 204: Pool& pool=r.pool();
1.28 paf 205: const String& src=*static_cast<VString *>(r.self)->get_string();
1.24 paf 206:
1.59 parser 207: Value& regexp=params->as_no_junction(0, "regexp must not be code");
1.38 paf 208:
209: const String *options=
210: params->size()>1?
1.59 parser 211: ¶ms->as_no_junction(1, "options must not be code").as_string():0;
1.24 paf 212:
1.27 paf 213: Value *result;
1.24 paf 214: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.25 paf 215: Table *table;
1.27 paf 216: if(params->size()<3) { // search
1.60 parser 217: bool matched=src.match(r.pcre_tables,
1.39 paf 218: &method_name,
1.32 paf 219: regexp.as_string(), options,
1.27 paf 220: &table,
1.60 parser 221: search_action, 0);
222: // matched
223: if(table->columns()->size()==3 && // just matched[3=pre/match/post], no substrings
224: table->size()<=1) // just one row, not /g_lobal search
225: result=new(pool) VBool(pool, matched);
226: else // table of pre/match/post+substrings
227: result=new(pool) VTable(pool, table);
1.27 paf 228: } else { // replace
1.59 parser 229: Value& replacement_code=params->as_junction(2, "replacement code must be code");
1.24 paf 230:
1.28 paf 231: String& dest=*new(pool) String(pool);
1.27 paf 232: Replace_action_info replace_action_info={
1.30 paf 233: &r, &method_name,
1.31 paf 234: &src, &dest,
1.28 paf 235: &replacement_code,
1.29 paf 236: &src
1.27 paf 237: };
1.39 paf 238: src.match(r.pcre_tables,
239: &method_name,
1.27 paf 240: r.process(regexp).as_string(), options,
241: &table,
1.33 paf 242: replace_action, &replace_action_info);
1.28 paf 243: result=new(pool) VString(dest);
1.27 paf 244: }
1.26 paf 245: result->set_name(method_name);
1.34 paf 246: r.write_assign_lang(*result);
1.24 paf 247: }
248:
1.49 parser 249: static void change_case(Request& r, const String& method_name, MethodParams *params,
250: String::Change_case_kind kind) {
251: Pool& pool=r.pool();
252: const String& src=*static_cast<VString *>(r.self)->get_string();
253:
254: r.write_assign_lang(*new(pool) VString(src.change_case(pool, r.pcre_tables,
255: kind)));
256: }
257: static void _upper(Request& r, const String& method_name, MethodParams *params) {
258: change_case(r, method_name, params, String::CC_UPPER);
259: }
260: static void _lower(Request& r, const String& method_name, MethodParams *params) {
261: change_case(r, method_name, params, String::CC_LOWER);
262: }
263:
1.62 parser 264: const String* sql_result_string(Request& r, const String& method_name, MethodParams *params) {
1.53 parser 265: Pool& pool=r.pool();
266:
267: if(!r.connection)
268: PTHROW(0, 0,
269: &method_name,
270: "without connect");
271:
1.59 parser 272: Value& statement=params->as_junction(0, "statement must be code");
1.53 parser 273:
1.62 parser 274: ulong offset=(ulong)(params->size()>2?params->as_int(2, r):0);
1.53 parser 275:
276: Temp_lang temp_lang(r, String::UL_SQL);
277: const String& statement_string=r.process(statement).as_string();
278: const char *statement_cstr=
279: statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
280: unsigned int sql_column_count; SQL_Driver::Cell *sql_columns;
281: unsigned long sql_row_count; SQL_Driver::Cell **sql_rows;
282: bool need_rethrow=false; Exception rethrow_me;
283: PTRY {
284: r.connection->query(
285: statement_cstr, offset, 0,
286: &sql_column_count, &sql_columns,
287: &sql_row_count, &sql_rows);
288: }
289: PCATCH(e) { // query problem
290: rethrow_me=e; need_rethrow=true;
291: }
292: PEND_CATCH
293: if(need_rethrow)
294: PTHROW(rethrow_me.type(), rethrow_me.code(),
295: &statement_string, // setting more specific source [were url]
296: rethrow_me.comment());
297:
298: if(sql_column_count!=1)
299: PTHROW(0, 0,
300: &statement_string,
1.56 parser 301: "result must contain exactly one column");
1.53 parser 302:
1.62 parser 303: if(!sql_row_count)
304: return 0; // no lines, should return second param[default value]
305:
306: if(sql_row_count>1)
1.53 parser 307: PTHROW(0, 0,
308: &statement_string,
1.62 parser 309: "result must not contain more then one row");
1.53 parser 310:
1.62 parser 311: String *result=new(pool) String(pool);
1.53 parser 312: SQL_Driver::Cell& cell=sql_rows[0][0];
1.62 parser 313: result->APPEND_TAINTED(
1.53 parser 314: (const char *)cell.ptr, cell.size,
315: statement_cstr, 0);
316:
317: return result;
318: }
319:
320: static void _sql(Request& r, const String& method_name, MethodParams *params) {
321: Pool& pool=r.pool();
322:
1.62 parser 323: const String *string=sql_result_string(r, method_name, params);
324: if(!string) {
325: Value& default_code=params->as_junction(1, "default result must code");
326: Value& processed_code=r.process(default_code);
327: string=processed_code.get_string();
328: if(!string)
329: string=empty_string;
330: }
331: VString& result=*new(pool) VString(*string);
1.53 parser 332: result.set_name(method_name);
333: r.write_assign_lang(result);
334: }
335:
1.41 paf 336: // constructor
337:
338: MString::MString(Pool& apool) : Methoded(apool) {
339: set_name(*NEW String(pool(), STRING_CLASS_NAME));
340:
1.9 paf 341:
1.1 paf 342: // ^string.length[]
1.41 paf 343: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 344:
1.1 paf 345: // ^string.int[]
1.41 paf 346: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0);
1.6 paf 347:
1.1 paf 348: // ^string.double[]
1.41 paf 349: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0);
1.9 paf 350:
1.24 paf 351: // ^string.format{format}
1.41 paf 352: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 353:
1.15 paf 354: // ^string.left(n)
1.41 paf 355: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 356: // ^string.right(n)
1.41 paf 357: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.15 paf 358: // ^string.mid(p;n)
1.41 paf 359: add_native_method("mid", Method::CT_DYNAMIC, _mid, 2, 2);
1.16 paf 360:
361: // ^string.pos[substr]
1.41 paf 362: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1);
1.17 paf 363:
364: // ^string.lsplit[delim]
1.41 paf 365: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
1.19 paf 366: // ^string.rsplit[delim]
1.41 paf 367: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
1.24 paf 368:
1.32 paf 369: // ^string.match[regexp][options]
370: // ^string.match[regexp][options]{replacement-code}
1.41 paf 371: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3);
1.49 parser 372:
373: // ^string.toupper[]
374: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
375: // ^string.tolower[]
376: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 377:
1.62 parser 378: // ^string:sql[query]{default}
379: // ^string:sql[query]{default}(offset)
380: add_native_method("sql", Method::CT_STATIC, _sql, 2, 3);
1.2 paf 381: }
1.1 paf 382:
1.41 paf 383: // global variable
384:
385: Methoded *string_class;
386:
387: // creator
388:
389: Methoded *MString_create(Pool& pool) {
390: return string_class=new(pool) MString(pool);
391: }
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