Annotation of parser3/src/classes/string.C, revision 1.38
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:
1.38 ! paf 8: $Id: string.C,v 1.37 2001/04/08 13:11:15 paf Exp $
1.1 paf 9: */
10:
11: #include "pa_request.h"
12: #include "_string.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"
1.1 paf 18:
19: // global var
20:
1.10 paf 21: VStateless_class *string_class;
1.1 paf 22:
23: // methods
24:
1.38 ! paf 25: static void _length(Request& r, const String&, MethodParams *) {
1.1 paf 26: Pool& pool=r.pool();
1.15 paf 27: Value& value=*new(pool) VDouble(pool, r.self->get_string()->size());
1.11 paf 28: r.write_no_lang(value);
1.1 paf 29: }
30:
1.38 ! paf 31: static void _int(Request& r, const String&, MethodParams *) {
1.1 paf 32: Pool& pool=r.pool();
1.13 paf 33: Value& value=*new(pool) VInt(pool, (int)r.self->as_double());
1.11 paf 34: r.write_no_lang(value);
1.1 paf 35: }
36:
1.38 ! paf 37: static void _double(Request& r, const String&, MethodParams *) {
1.1 paf 38: Pool& pool=r.pool();
1.13 paf 39: Value& value=*new(pool) VDouble(pool, r.self->as_double());
1.11 paf 40: r.write_no_lang(value);
1.1 paf 41: }
42:
1.24 paf 43: /// ^string.format{format}
1.38 ! paf 44: /*not static*/void _string_format(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 45: Pool& pool=r.pool();
46:
1.38 ! paf 47: Value& fmt=params->get_junction(0, "fmt must be code");
1.9 paf 48:
1.24 paf 49: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
50: char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr());
1.9 paf 51:
1.12 paf 52: r.write_no_lang(String(pool, buf));
1.9 paf 53: }
1.11 paf 54:
1.38 ! paf 55: static void _left(Request& r, const String&, MethodParams *params) {
1.15 paf 56: Pool& pool=r.pool();
57:
1.38 ! paf 58: size_t n=(size_t)r.process(params->get(0)).as_double();
1.15 paf 59:
60: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 61: r.write_assign_lang(*new(pool) VString(string.mid(0, n)));
1.15 paf 62: }
63:
1.38 ! paf 64: static void _right(Request& r, const String&, MethodParams *params) {
1.15 paf 65: Pool& pool=r.pool();
66:
1.38 ! paf 67: size_t n=(size_t)r.process(params->get(0)).as_double();
1.15 paf 68:
69: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 70: r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size())));
1.15 paf 71: }
72:
1.38 ! paf 73: static void _mid(Request& r, const String&, MethodParams *params) {
1.15 paf 74: Pool& pool=r.pool();
75:
1.38 ! paf 76: size_t p=(size_t)r.process(params->get(0)).as_double();
! 77: size_t n=(size_t)r.process(params->get(1)).as_double();
1.15 paf 78:
79: const String& string=*static_cast<VString *>(r.self)->get_string();
1.35 paf 80: r.write_assign_lang(*new(pool) VString(string.mid(p, p+n)));
1.15 paf 81: }
82:
1.38 ! paf 83: static void _pos(Request& r, const String& method_name, MethodParams *params) {
1.16 paf 84: Pool& pool=r.pool();
85:
1.38 ! paf 86: Value& substr=params->get_no_junction(0, "substr must not be code");
1.16 paf 87:
88: const String& string=*static_cast<VString *>(r.self)->get_string();
89: r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string())));
90: }
91:
1.38 ! paf 92: static void split_list(Request& r, const String& method_name, MethodParams *params,
1.23 paf 93: const String& string,
94: Array& result) {
1.17 paf 95: Pool& pool=r.pool();
96:
1.38 ! paf 97: Value& delim_value=params->get_no_junction(0, "delimiter must not be code");
1.23 paf 98:
99: string.split(result, 0, delim_value.as_string(), String::UL_CLEAN, -1);
1.19 paf 100: }
101:
1.38 ! paf 102: static void _lsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 103: Pool& pool=r.pool();
104: const String& string=*static_cast<VString *>(r.self)->get_string();
105:
1.21 paf 106: Array& row=*new(pool) Array(pool);
107: split_list(r, method_name, params, string, row);
1.19 paf 108:
1.21 paf 109: Table& table=*new(pool) Table(pool, &string,
110: 0/*nameless*/, 1/*row preallocate(and only)*/);
111: table+=&row;
1.19 paf 112:
113: r.write_no_lang(*new(pool) VTable(pool, &table));
114: }
115:
1.38 ! paf 116: static void _rsplit(Request& r, const String& method_name, MethodParams *params) {
1.19 paf 117: Pool& pool=r.pool();
118: const String& string=*static_cast<VString *>(r.self)->get_string();
119:
120: Array list(pool);
121: split_list(r, method_name, params, string, list);
122:
1.21 paf 123: Array& row=*new(pool) Array(pool);
124: for(int i=list.size(); --i>=0; )
125: row+=list.get(i);
126:
127: Table& table=*new(pool) Table(pool, &string,
128: 0/*nameless*/, 1/*row preallocate(and only)*/);
129: table+=&row;
1.17 paf 130:
1.19 paf 131: r.write_no_lang(*new(pool) VTable(pool, &table));
1.17 paf 132: }
133:
1.33 paf 134: static void search_action(Table& table, Array *row, int, int, void *) {
1.28 paf 135: if(row)
136: table+=row;
1.27 paf 137: }
138:
139: struct Replace_action_info {
1.30 paf 140: Request *request; const String *origin;
1.31 paf 141: const String *src; String *dest;
1.27 paf 142: Value *replacement_code;
1.29 paf 143: const String *post_match;
1.27 paf 144: };
1.33 paf 145: static void replace_action(Table& table, Array *row, int start, int finish,
1.31 paf 146: void *info) {
1.27 paf 147: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 148: if(row) { // begin&middle
149: // piece from last match['start'] to beginning of this match['finish']
150: if(start!=finish)
1.37 paf 151: *ai.dest << ai.src->mid(start, finish);//ai.dest->APPEND_CONST("-");
1.30 paf 152: // store found parts in one-record Vtable
1.32 paf 153: if(table.size()) // middle
154: table.put(0, row);
155: else // begin
1.30 paf 156: table+=row;
157: { // execute 'replacement_code' in 'table' context
158: VTable& vtable=*new(table.pool()) VTable(table.pool(), &table);
159: vtable.set_name(*ai.origin);
160:
161: Junction *junction=ai.replacement_code->get_junction();
1.34 paf 162: junction->rcontext=junction->root=&vtable;
1.30 paf 163: Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false);
164:
1.34 paf 165: /*
1.31 paf 166: ai.dest->APPEND_CONST("(");
1.37 paf 167: *ai.dest << *(String *)row->get(1/*match* /);
1.31 paf 168: ai.dest->APPEND_CONST(")");
1.34 paf 169: */
1.37 paf 170: *ai.dest << replaced.as_string();
1.29 paf 171: }
172: ai.post_match=(String *)row->get(2/*post_match*/);
173: } else // end
1.37 paf 174: *ai.dest << *ai.post_match;
1.27 paf 175: }
176:
177: /** search/replace
1.32 paf 178: ^string.match[regexp][options]
179: ^string.match[regexp][options]{replacement-code}
1.27 paf 180: */
1.38 ! paf 181: static void _match(Request& r, const String& method_name, MethodParams *params) {
1.24 paf 182: Pool& pool=r.pool();
1.28 paf 183: const String& src=*static_cast<VString *>(r.self)->get_string();
1.24 paf 184:
1.38 ! paf 185: Value& regexp=params->get_no_junction(0, "regexp must not be code");
! 186:
! 187: const String *options=
! 188: params->size()>1?
! 189: ¶ms->get_no_junction(1, "options must not be code").as_string():0;
1.24 paf 190:
1.27 paf 191: Value *result;
1.24 paf 192: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.25 paf 193: Table *table;
1.27 paf 194: if(params->size()<3) { // search
1.28 paf 195: if(src.match(&method_name,
1.32 paf 196: regexp.as_string(), options,
1.27 paf 197: &table,
1.33 paf 198: search_action, 0)) {
1.27 paf 199: // matched
200: if(table->columns()->size()==3 && // just matched[3=pre/match/post], no substrings
201: table->size()==1) // just one row, not /g_lobal search
202: result=new(pool) VBool(pool, true);
203: else // table of pre/match/post+substrings
204: result=new(pool) VTable(pool, table);
205: } else // not matched [not global]
206: result=new(pool) VBool(pool, false);
207: } else { // replace
1.38 ! paf 208: Value& replacement_code=params->get_junction(2, "replacement code must be code");
1.24 paf 209:
1.28 paf 210: String& dest=*new(pool) String(pool);
1.27 paf 211: Replace_action_info replace_action_info={
1.30 paf 212: &r, &method_name,
1.31 paf 213: &src, &dest,
1.28 paf 214: &replacement_code,
1.29 paf 215: &src
1.27 paf 216: };
1.28 paf 217: src.match(&method_name,
1.27 paf 218: r.process(regexp).as_string(), options,
219: &table,
1.33 paf 220: replace_action, &replace_action_info);
1.28 paf 221: result=new(pool) VString(dest);
1.27 paf 222: }
1.26 paf 223: result->set_name(method_name);
1.34 paf 224: r.write_assign_lang(*result);
1.24 paf 225: }
226:
1.11 paf 227: // initialize
1.9 paf 228:
1.10 paf 229: void initialize_string_class(Pool& pool, VStateless_class& vclass) {
1.1 paf 230: // ^string.length[]
1.22 paf 231: vclass.add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 232:
1.1 paf 233: // ^string.int[]
1.22 paf 234: vclass.add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0);
1.6 paf 235:
1.1 paf 236: // ^string.double[]
1.22 paf 237: vclass.add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0);
1.9 paf 238:
1.24 paf 239: // ^string.format{format}
1.22 paf 240: vclass.add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 241:
1.15 paf 242: // ^string.left(n)
1.22 paf 243: vclass.add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 244: // ^string.right(n)
1.22 paf 245: vclass.add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.15 paf 246: // ^string.mid(p;n)
1.22 paf 247: vclass.add_native_method("mid", Method::CT_DYNAMIC, _mid, 2, 2);
1.16 paf 248:
249: // ^string.pos[substr]
1.22 paf 250: vclass.add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1);
1.17 paf 251:
252: // ^string.lsplit[delim]
1.22 paf 253: vclass.add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
1.19 paf 254: // ^string.rsplit[delim]
1.22 paf 255: vclass.add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
1.24 paf 256:
1.32 paf 257: // ^string.match[regexp][options]
258: // ^string.match[regexp][options]{replacement-code}
1.28 paf 259: vclass.add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3);
1.2 paf 260: }
1.1 paf 261:
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