Annotation of parser3/src/classes/string.C, revision 1.240
1.24 paf 1: /** @file
2: Parser: @b string parser class.
3:
1.234 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (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:
1.43 paf 8: #include "classes.h"
1.126 paf 9: #include "pa_vmethod_frame.h"
10:
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"
1.119 paf 19: #include "pa_vmethod_frame.h"
1.174 misha 20: #include "pa_vregex.h"
1.189 misha 21: #include "pa_charsets.h"
1.1 paf 22:
1.240 ! moko 23: volatile const char * IDENT_STRING_C="$Id: string.C,v 1.239 2019/09/06 10:17:07 moko Exp $";
1.203 moko 24:
1.41 paf 25: // class
26:
1.126 paf 27: class MString: public Methoded {
1.41 paf 28: public:
1.126 paf 29: MString();
1.41 paf 30: };
1.1 paf 31:
1.126 paf 32: // global variable
33:
1.224 moko 34: DECLARE_CLASS_VAR(string, new MString);
1.126 paf 35:
1.196 moko 36: // void class, inherited from string and thus should be inited afterwards
37:
38: class MVoid: public Methoded {
39: public:
40: MVoid();
41: };
42:
43: // void global variable should be after string global variable
44:
1.224 moko 45: DECLARE_CLASS_VAR(void, new MVoid);
1.196 moko 46:
1.126 paf 47: // defines for statics
48:
49: #define MATCH_VAR_NAME "match"
1.162 misha 50: #define TRIM_START_OPTION "left"
51: #define TRIM_END_OPTION "right"
1.133 paf 52: #define TRIM_BOTH_OPTION "both"
1.126 paf 53:
1.189 misha 54: #define MODE_APPEND "append"
55:
1.220 moko 56: #define UNESCAPE_MODE_JS "js"
57: #define UNESCAPE_MODE_URI "uri"
58:
1.126 paf 59: // statics
60:
61: static const String match_var_name(MATCH_VAR_NAME);
62:
1.1 paf 63: // methods
64:
1.126 paf 65: static void _length(Request& r, MethodParams&) {
1.163 misha 66: double result=GET_SELF(r, VString).string().length(r.charsets.source());
1.233 moko 67: r.write(*new VDouble(result));
1.1 paf 68: }
69:
1.126 paf 70: static void _int(Request& r, MethodParams& params) {
71: const String& self_string=GET_SELF(r, VString).string();
1.72 parser 72: int converted;
1.206 moko 73:
74: if(self_string.is_empty()) {
1.144 paf 75: if(params.count()>0)
76: converted=params.as_int(0, "default must be int", r); // (default)
1.84 parser 77: else
1.206 moko 78: throw Exception(PARSER_RUNTIME, 0, "unable to convert empty string without default specified");
79: } else {
80: try {
81: converted=self_string.as_int();
82: } catch(...) { // convert problem
83: if(params.count()>0)
84: converted=params.as_int(0, "default must be int", r); // (default)
85: else
86: rethrow; // we have a problem when no default
87: }
1.72 parser 88: }
1.206 moko 89:
1.233 moko 90: r.write(*new VInt(converted));
1.1 paf 91: }
92:
1.126 paf 93: static void _double(Request& r, MethodParams& params) {
94: const String& self_string=GET_SELF(r, VString).string();
1.206 moko 95:
96: if(self_string.is_empty()) {
1.144 paf 97: if(params.count()>0)
1.233 moko 98: r.write(*new VDouble(params.as_double(0, "default must be double", r))); // (default)
1.84 parser 99: else
1.206 moko 100: throw Exception(PARSER_RUNTIME, 0, "unable to convert empty string without default specified");
101: } else {
102: try {
1.233 moko 103: r.write(*new VDouble(self_string.as_double()));
1.206 moko 104: } catch(...) { // convert problem
105: if(params.count()>0)
1.233 moko 106: r.write(*new VDouble(params.as_double(0, "default must be double", r))); // (default)
1.206 moko 107: else
108: rethrow; // we have a problem when no default
109: }
1.72 parser 110: }
1.1 paf 111: }
112:
1.151 misha 113: static void _bool(Request& r, MethodParams& params) {
114: const String& self_string=GET_SELF(r, VString).string();
115: bool converted;
1.206 moko 116: const char *str=self_string.cstr();
117:
118: if(self_string.is_empty()) {
119: if(params.count()>0)
120: converted=params.as_bool(0, "default must be bool", r); // (default)
121: else
122: throw Exception(PARSER_RUNTIME, 0, "unable to convert empty string without default specified");
1.207 moko 123: } else if( (str[0]=='T' || str[0]=='t') && (str[1]=='R' || str[1]=='r') && (str[2]=='U' || str[2]=='u') &&
1.206 moko 124: (str[3]=='E' || str[3]=='e') && str[4]==0 ) { // "true"
125: converted=true;
1.207 moko 126: } else if( (str[0]=='F' || str[0]=='f') && (str[1]=='A' || str[1]=='a') && (str[2]=='L' || str[2]=='l') &&
1.206 moko 127: (str[3]=='S' || str[3]=='s') && (str[4]=='E' || str[4]=='e') && str[5]==0 ) { // "false"
128: converted=false;
129: } else {
1.158 misha 130: try {
131: converted=self_string.as_bool();
1.206 moko 132: } catch(...) { // convert problem
133: if(params.count()>0)
134: converted=params.as_bool(0, "default must be bool", r); // (default)
135: else
136: rethrow; // we have a problem when no default
1.158 misha 137: }
1.151 misha 138: }
139:
1.233 moko 140: r.write(VBool::get(converted));
1.151 misha 141: }
142:
1.126 paf 143: /*not static*/void _string_format(Request& r, MethodParams& params) {
1.9 paf 144:
1.126 paf 145: Value& fmt_maybe_code=params[0];
1.95 paf 146: // for some time due to stupid {} in original design
1.99 paf 147: const String& fmt=r.process_to_string(fmt_maybe_code);
1.9 paf 148:
1.159 misha 149: const char* buf=format(r.get_self().as_double(), fmt.trim().cstrm());
1.63 parser 150:
1.233 moko 151: r.write(String(buf));
1.9 paf 152: }
1.11 paf 153:
1.126 paf 154: static void _left(Request& r, MethodParams& params) {
1.138 paf 155: ssize_t sn=params.as_int(0, "n must be int", r);
1.126 paf 156: const String& string=GET_SELF(r, VString).string();
1.233 moko 157: r.write(sn<0 ? string : string.mid(r.charsets.source(), 0, (size_t)sn));
1.15 paf 158: }
159:
1.126 paf 160: static void _right(Request& r, MethodParams& params) {
1.217 moko 161: ssize_t sn=params.as_int(0, "n must be int", r);
1.216 moko 162: if(sn>0){
163: size_t n=(size_t)sn;
164: const String& string=GET_SELF(r, VString).string();
165: size_t length=string.length(r.charsets.source());
1.233 moko 166: r.write(n<length ? string.mid(r.charsets.source(), length-n, length, length) : string);
1.216 moko 167: }
1.15 paf 168: }
169:
1.126 paf 170: static void _mid(Request& r, MethodParams& params) {
171: const String& string=GET_SELF(r, VString).string();
1.83 parser 172:
1.138 paf 173: ssize_t sbegin=params.as_int(0, "p must be int", r);
174: if(sbegin<0)
1.238 moko 175: throw Exception(PARSER_RUNTIME, 0, "p(%d) must be >=0", sbegin);
1.138 paf 176: size_t begin=(size_t)sbegin;
177:
178: size_t end;
1.164 misha 179: size_t length=0;
1.138 paf 180: if(params.count()>1) {
181: ssize_t sn=params.as_int(1, "n must be int", r);
182: if(sn<0)
1.238 moko 183: throw Exception(PARSER_RUNTIME, 0, "n(%d) must be >=0", sn);
1.138 paf 184: end=begin+(size_t)sn;
1.164 misha 185: } else {
186: length=string.length(r.charsets.source());
187: end=length;
188: }
1.163 misha 189:
1.233 moko 190: r.write(string.mid(r.charsets.source(), begin, end, length));
1.15 paf 191: }
192:
1.126 paf 193: static void _pos(Request& r, MethodParams& params) {
194: Value& substr=params.as_no_junction(0, "substr must not be code");
1.16 paf 195:
1.126 paf 196: const String& string=GET_SELF(r, VString).string();
1.165 misha 197: ssize_t offset=0;
198: if(params.count()>1){
199: offset=params.as_int(1, "n must be int", r);
200: if(offset<0)
1.227 moko 201: throw Exception(PARSER_RUNTIME, 0, "n(%d) must be >=0", offset);
1.165 misha 202: }
203:
1.233 moko 204: r.write(*new VInt((int)string.pos(r.charsets.source(), substr.as_string(), (size_t)offset)));
1.16 paf 205: }
206:
1.227 moko 207: static void split_list(MethodParams& params, int paramIndex, const String& string, ArrayString& result) {
1.126 paf 208: Value& delim_value=params.as_no_junction(paramIndex, "delimiter must not be code");
1.227 moko 209: string.split(result, 0, delim_value.as_string());
1.19 paf 210: }
211:
1.118 paf 212: #define SPLIT_LEFT 0x0001
213: #define SPLIT_RIGHT 0x0010
214: #define SPLIT_HORIZONTAL 0x0100
215: #define SPLIT_VERTICAL 0x1000
216:
1.126 paf 217: static int split_options(const String* options) {
1.118 paf 218: struct Split_option {
1.126 paf 219: const char* keyL;
220: const char* keyU;
1.118 paf 221: int setBit;
222: int checkBit;
223: } split_option[]={
224: {"l", "L", SPLIT_LEFT, SPLIT_RIGHT}, // 0xVHRL
225: {"r", "R", SPLIT_RIGHT, SPLIT_LEFT},
226: {"h", "H", SPLIT_HORIZONTAL, SPLIT_VERTICAL},
227: {"v", "V", SPLIT_VERTICAL, SPLIT_HORIZONTAL},
1.130 paf 228: {0, 0, 0, 0}
1.118 paf 229: };
230:
231: int result=0;
1.126 paf 232: if(options) {
1.118 paf 233: for(Split_option *o=split_option; o->keyL; o++)
1.126 paf 234: if(options->pos(o->keyL)!=STRING_NOT_FOUND
235: || (o->keyU && options->pos(o->keyU)!=STRING_NOT_FOUND)) {
1.118 paf 236: if(result & o->checkBit)
1.238 moko 237: throw Exception(PARSER_RUNTIME, options, "conflicting split options");
1.118 paf 238: result |= o->setBit;
239: }
240: }
241:
242: return result;
243: }
244:
1.156 misha 245: static Table& split_vertical(ArrayString& pieces, bool right, const String* column_name) {
1.126 paf 246: Table::columns_type columns(new ArrayString);
1.156 misha 247: *columns+=column_name;
1.19 paf 248:
1.126 paf 249: Table& table=*new Table(columns, pieces.count());
1.118 paf 250: if(right) { // right
1.126 paf 251: for(int i=pieces.count(); --i>=0; ) {
252: Table::element_type row(new ArrayString);
253: *row+=pieces[i];
254: table+=row;
1.118 paf 255: }
256: } else { // left
1.126 paf 257: Array_iterator<const String*> i(pieces);
1.118 paf 258: while(i.has_next()) {
1.126 paf 259: Table::element_type row(new ArrayString);
260: *row+=i.next();
261: table+=row;
1.118 paf 262: }
1.61 parser 263: }
1.118 paf 264:
1.126 paf 265: return table;
1.19 paf 266: }
267:
1.128 paf 268: static Table& split_horizontal(ArrayString& pieces, bool right) {
1.126 paf 269: Table& table=*new Table(Table::columns_type(0) /* nameless */);
270: Table::element_type row(new ArrayString(pieces.count()));
1.118 paf 271: if(right) { // right
1.131 paf 272: for(int i=pieces.count(); --i>=0; )
1.126 paf 273: *row+=pieces[i];
1.118 paf 274: } else { // left
1.126 paf 275: for(Array_iterator<const String*> i(pieces); i.has_next(); )
276: *row+=i.next();
1.118 paf 277: }
1.126 paf 278: table+=row;
1.118 paf 279:
1.126 paf 280: return table;
1.118 paf 281: }
282:
1.238 moko 283: static void split_with_options(Request& r, MethodParams& params, int bits) {
1.126 paf 284: const String& string=GET_SELF(r, VString).string();
1.176 misha 285: size_t params_count=params.count();
1.19 paf 286:
1.126 paf 287: ArrayString pieces;
1.128 paf 288: split_list(params, 0, string, pieces);
1.19 paf 289:
1.118 paf 290: if(!bits) {
1.126 paf 291: const String* options=0;
1.176 misha 292: if(params_count>1)
1.187 misha 293: options=¶ms.as_string(1, OPTIONS_MUST_NOT_BE_CODE);
1.118 paf 294: bits=split_options(options);
295: }
1.21 paf 296:
1.118 paf 297: bool right=(bits & SPLIT_RIGHT) != 0;
298: bool horizontal=(bits & SPLIT_HORIZONTAL) !=0;
1.156 misha 299:
300: const String* column_name=0;
1.176 misha 301: if(params_count>2){
1.156 misha 302: column_name=¶ms.as_string(2, COLUMN_NAME_MUST_BE_STRING);
1.178 misha 303: if (horizontal && !column_name->is_empty())
1.238 moko 304: throw Exception(PARSER_RUNTIME, column_name, "column name can't be specified with horisontal split");
1.156 misha 305: }
1.178 misha 306: if(!column_name || column_name->is_empty())
1.156 misha 307: column_name=new String("piece");
308:
309: Table& table=horizontal?split_horizontal(pieces, right):split_vertical(pieces, right, column_name);
1.17 paf 310:
1.233 moko 311: r.write(*new VTable(&table));
1.118 paf 312: }
1.126 paf 313: static void _split(Request& r, MethodParams& params) {
314: split_with_options(r, params, 0 /* maybe-determine from param #2 */);
1.118 paf 315: }
1.126 paf 316: static void _lsplit(Request& r, MethodParams& params) {
317: split_with_options(r, params, SPLIT_LEFT);
1.118 paf 318: }
1.126 paf 319: static void _rsplit(Request& r, MethodParams& params) {
320: split_with_options(r, params, SPLIT_RIGHT);
1.17 paf 321: }
322:
1.126 paf 323: static void search_action(Table& table, Table::element_type row, int, int, int, int, void *) {
1.28 paf 324: if(row)
325: table+=row;
1.27 paf 326: }
327:
1.74 parser 328: #ifndef DOXYGEN
1.27 paf 329: struct Replace_action_info {
1.181 misha 330: Request* request;
331: const String* src;
332: String* dest;
1.126 paf 333: VTable* vtable;
334: Value* replacement_code;
1.27 paf 335: };
1.74 parser 336: #endif
1.105 paf 337: /// @todo they can do $global[$result] there, getting pointer to later-invalid local var, kill this
1.238 moko 338: static void replace_action(Table& table, ArrayString* row, int prestart, int prefinish, int poststart, int postfinish, void *info) {
1.27 paf 339: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 340: if(row) { // begin&middle
1.104 paf 341: // piece from last match['prestart'] to beginning of this match['prefinish']
342: if(prestart!=prefinish)
343: *ai.dest << ai.src->mid(prestart, prefinish);//ai.dest->APPEND_CONST("-");
1.51 parser 344: // store found parts in one-record VTable
1.126 paf 345: if(table.count()) // middle
1.32 paf 346: table.put(0, row);
347: else // begin
1.30 paf 348: table+=row;
1.181 misha 349:
1.30 paf 350: { // execute 'replacement_code' in 'table' context
1.181 misha 351: if(ai.replacement_code){
352: ai.vtable->set_table(table);
353: *ai.dest << ai.request->process_to_string(*ai.replacement_code);
354: }
1.29 paf 355: }
356: } else // end
1.104 paf 357: *ai.dest << ai.src->mid(poststart, postfinish);
1.27 paf 358: }
359:
1.126 paf 360: static void _match(Request& r, MethodParams& params) {
1.174 misha 361: size_t params_count=params.count();
362:
1.126 paf 363: Value& regexp=params.as_no_junction(0, "regexp must not be code");
1.187 misha 364: Value* options=(params_count>1)?¶ms.as_no_junction(1, OPTIONS_MUST_NOT_BE_CODE):0;
1.174 misha 365:
366: VRegex* vregex;
367: VRegexCleaner vrcleaner;
1.126 paf 368:
1.188 misha 369: if(Value* value=regexp.as(VREGEX_TYPE)){
1.174 misha 370: if(options && options->is_defined())
1.237 moko 371: throw Exception(PARSER_RUNTIME, 0, "you can not specify regex-object and options together");
1.174 misha 372: vregex=static_cast<VRegex*>(value);
373: } else {
1.237 moko 374: vregex=new VRegex(r.charsets.source(), ®exp.as_string(), (options) ? (&options->as_string()) : 0);
1.175 misha 375: vregex->study();
1.174 misha 376: vrcleaner.vregex=vregex;
377: }
1.126 paf 378:
379: const String& src=GET_SELF(r, VString).string();
1.152 misha 380: int matches_count=0;
1.174 misha 381:
382: if(params_count<3) { // search
1.237 moko 383: Table* table=src.match(vregex, search_action, 0, matches_count);
1.174 misha 384:
1.152 misha 385: if(table){
1.233 moko 386: r.write(*new VTable(table));
1.152 misha 387: } else {
1.233 moko 388: r.write(*new VInt(matches_count));
1.152 misha 389: }
390:
1.27 paf 391: } else { // replace
1.181 misha 392:
393: Value* replacement_code=0;
394: bool is_junction=false;
395:
396: Value* replacement=¶ms[2];
397: if(replacement->get_junction()){
398: replacement_code=replacement;
399: is_junction=true;
400: } else if(replacement->is_string()){
401: if(replacement->is_defined())
402: replacement_code=replacement;
403: } else if(!replacement->is_void())
1.238 moko 404: throw Exception(PARSER_RUNTIME, 0, "replacement option should be junction or string");
1.106 paf 405:
1.238 moko 406: Value* default_code=(params_count==4) ? ¶ms.as_junction(3, "default value must be code") : 0;
1.192 misha 407:
1.126 paf 408: String result;
409: VTable* vtable=new VTable;
1.130 paf 410: Replace_action_info info={
411: &r,
412: &src,
413: &result,
414: vtable,
1.181 misha 415: replacement_code
1.130 paf 416: };
1.181 misha 417:
1.191 misha 418: if(is_junction){
1.211 moko 419: Temp_value_element temp(r, *replacement_code->get_junction()->method_frame, match_var_name, vtable);
1.191 misha 420: src.match(vregex, replace_action, &info, matches_count);
421: } else {
422: src.match(vregex, replace_action, &info, matches_count);
423: }
1.181 misha 424:
1.192 misha 425: if(!matches_count && default_code)
426: r.process_write(*default_code);
427: else
1.233 moko 428: r.write(result);
1.27 paf 429: }
1.24 paf 430: }
431:
1.238 moko 432: static void change_case(Request& r, MethodParams&, String::Change_case_kind kind) {
1.126 paf 433: const String& src=GET_SELF(r, VString).string();
1.49 parser 434:
1.233 moko 435: r.write(src.change_case(r.charsets.source(), kind));
1.49 parser 436: }
1.126 paf 437: static void _upper(Request& r, MethodParams& params) {
438: change_case(r, params, String::CC_UPPER);
1.49 parser 439: }
1.126 paf 440: static void _lower(Request& r, MethodParams& params) {
441: change_case(r, params, String::CC_LOWER);
1.49 parser 442: }
443:
1.65 parser 444: #ifndef DOXYGEN
1.126 paf 445: class String_sql_event_handlers: public SQL_Driver_query_event_handlers {
446: bool got_column;
1.65 parser 447: public:
1.126 paf 448: bool got_cell;
1.208 moko 449: const String* result;
1.126 paf 450: public:
1.240 ! moko 451: String_sql_event_handlers():
1.126 paf 452: got_column(false),
453: got_cell(false),
1.208 moko 454: result(&String::Empty) {}
1.65 parser 455:
1.128 paf 456: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
1.124 paf 457: if(got_column) {
1.240 ! moko 458: error=SQL_Error("result must contain exactly one column");
1.124 paf 459: return true;
460: }
1.65 parser 461: got_column=true;
1.124 paf 462: return false;
1.65 parser 463: }
1.124 paf 464: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
465: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
1.210 moko 466: bool add_row_cell(SQL_Error& error, const char* str, size_t) {
1.124 paf 467: if(got_cell) {
1.240 ! moko 468: error=SQL_Error("result must not contain more then one row");
1.124 paf 469: return true;
470: }
471: try {
472: got_cell=true;
1.208 moko 473: result=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */ );
1.124 paf 474: return false;
475: } catch(...) {
1.235 moko 476: error=SQL_Error("exception occurred in String_sql_event_handlers::add_row_cell");
1.124 paf 477: return true;
478: }
1.65 parser 479: }
480: };
481: #endif
1.239 moko 482:
1.141 paf 483: extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders);
484: extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders);
485:
1.204 moko 486: const String* sql_result_string(Request& r, MethodParams& params, Value*& default_code) {
1.126 paf 487: Value& statement=params.as_junction(0, "statement must be code");
1.53 parser 488:
1.141 paf 489: HashStringValue* bind=0;
1.160 misha 490: ulong limit=SQL_NO_LIMIT;
1.70 parser 491: ulong offset=0;
1.81 parser 492: default_code=0;
1.199 misha 493: if(params.count()>1)
1.205 misha 494: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.199 misha 495: int valid_options=0;
496: if(Value* vbind=options->get(sql_bind_name)) {
497: valid_options++;
498: bind=vbind->get_hash();
499: }
500: if(Value* vlimit=options->get(sql_limit_name)) {
501: valid_options++;
1.230 moko 502: limit=(ulong)r.process(*vlimit).as_double();
1.199 misha 503: }
504: if(Value* voffset=options->get(sql_offset_name)) {
505: valid_options++;
1.230 moko 506: offset=(ulong)r.process(*voffset).as_double();
1.199 misha 507: }
508: if((default_code=options->get(sql_default_name))) {
509: valid_options++;
510: }
511: if(valid_options!=options->count())
512: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.200 misha 513: }
1.70 parser 514:
1.141 paf 515: SQL_Driver::Placeholder* placeholders=0;
516: uint placeholders_count=0;
517: if(bind)
518: placeholders_count=marshal_binds(*bind, placeholders);
519:
1.99 paf 520: const String& statement_string=r.process_to_string(statement);
1.232 moko 521: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
1.183 misha 522:
1.240 ! moko 523: String_sql_event_handlers handlers;
1.160 misha 524:
1.240 ! moko 525: r.connection()->query(statement_cstr, placeholders_count, placeholders, offset, limit, handlers, statement_string);
1.53 parser 526:
1.141 paf 527: if(bind)
528: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
529:
1.65 parser 530: if(!handlers.got_cell)
531: return 0; // no lines, caller should return second param[default value]
1.62 parser 532:
1.208 moko 533: return handlers.result;
1.53 parser 534: }
535:
1.126 paf 536: static void _sql(Request& r, MethodParams& params) {
1.53 parser 537:
1.126 paf 538: Value* default_code;
1.204 moko 539: const String* string=sql_result_string(r, params, default_code);
1.62 parser 540: if(!string) {
1.81 parser 541: if(default_code) {
1.99 paf 542: string=&r.process_to_string(*default_code);
1.68 parser 543: } else
1.238 moko 544: throw Exception(PARSER_RUNTIME, 0, "produced no result, but no default option specified");
1.62 parser 545: }
1.100 paf 546:
1.233 moko 547: r.write(*string);
1.53 parser 548: }
549:
1.126 paf 550: static void _replace(Request& r, MethodParams& params) {
551: const String& src=GET_SELF(r, VString).string();
1.71 parser 552:
1.201 misha 553: if(params.count()==1) {
554: // ^string.replace[table]
1.205 misha 555: Table* table=params.as_table(0, "param");
1.201 misha 556: Dictionary dict(*table);
1.233 moko 557: r.write(src.replace(dict));
1.201 misha 558: } else {
559: // ^string.replace[from-string;to-string]
1.238 moko 560: Dictionary dict(params.as_string(0, "from must be string"), params.as_string(1, "to must be string"));
1.233 moko 561: r.write(src.replace(dict));
1.201 misha 562: }
1.71 parser 563:
564: }
1.79 parser 565:
1.126 paf 566: static void _save(Request& r, MethodParams& params) {
1.189 misha 567: bool do_append=false;
568: Charset* asked_charset=0;
569:
570: size_t file_name_index=0;
1.214 moko 571: if(params.count()>1) {
1.189 misha 572: if(HashStringValue* options=params.as_no_junction(1, "second parameter should be string or hash").get_hash()){
1.205 misha 573: // ^file.save[filespec;$.charset[] $.append(true)]
1.190 misha 574: int valid_options=0;
1.189 misha 575: if(Value* vcharset_name=options->get(PA_CHARSET_NAME)){
1.229 moko 576: asked_charset=&pa_charsets.get(vcharset_name->as_string());
1.189 misha 577: valid_options++;
578: }
579: if(Value* vappend=options->get(MODE_APPEND)){
580: do_append=vappend->as_bool();
581: valid_options++;
582: }
583: if(valid_options != options->count())
1.194 misha 584: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.189 misha 585: } else {
1.205 misha 586: // ^file.save[append;filespec]
1.189 misha 587: const String& mode=params.as_string(0, "mode must be string");
588: if(mode==MODE_APPEND){
589: do_append=true;
590: file_name_index++;
591: } else
592: throw Exception(PARSER_RUNTIME,
593: &mode,
594: "unknown mode, must be 'append'");
595: }
1.214 moko 596: }
1.79 parser 597:
1.189 misha 598: const String& file_name=params.as_string(file_name_index, FILE_NAME_MUST_BE_STRING);
1.126 paf 599: const String& src=GET_SELF(r, VString).string();
1.79 parser 600:
1.209 moko 601: String::Body sbody=src.cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets);
1.87 paf 602:
1.79 parser 603: // write
1.189 misha 604: file_write(r.charsets, r.absolute(file_name), sbody.cstr(), sbody.length(), true, do_append, asked_charset);
1.79 parser 605: }
606:
1.126 paf 607: static void _normalize(Request& r, MethodParams&) {
608: const String& src=GET_SELF(r, VString).string();
609:
1.233 moko 610: r.write(src);
1.109 paf 611: }
612:
1.133 paf 613: static void _trim(Request& r, MethodParams& params) {
614: const String& src=GET_SELF(r, VString).string();
615:
616: String::Trim_kind kind=String::TRIM_BOTH;
1.176 misha 617: size_t params_count=params.count();
1.133 paf 618: const char* chars=0;
1.176 misha 619: if(params_count>0) {
620: const String& skind=params.as_string(0, "'where' must be string");
1.214 moko 621: if(!skind.is_empty()) {
1.162 misha 622: if(skind==TRIM_BOTH_OPTION)
623: kind=String::TRIM_BOTH;
624: else if(skind==TRIM_START_OPTION || skind=="start")
1.137 paf 625: kind=String::TRIM_START;
1.162 misha 626: else if(skind==TRIM_END_OPTION || skind=="end")
1.137 paf 627: kind=String::TRIM_END;
1.218 moko 628: else if(params_count==1)
629: chars=skind.cstr();
1.137 paf 630: else
1.238 moko 631: throw Exception(PARSER_RUNTIME, &skind, "'kind' must be one of " TRIM_START_OPTION ", " TRIM_BOTH_OPTION ", " TRIM_END_OPTION);
1.214 moko 632: }
1.133 paf 633:
1.176 misha 634: if(params_count>1) {
1.136 paf 635: const String& schars=params.as_string(1, "'chars' must be string");
1.178 misha 636: if(!schars.is_empty())
1.137 paf 637: chars=schars.cstr();
1.136 paf 638: }
1.133 paf 639: }
640:
1.233 moko 641: r.write(src.trim(kind, chars, &r.charsets.source()));
1.133 paf 642: }
643:
1.146 paf 644: static void _base64(Request& r, MethodParams& params) {
1.219 moko 645: if(&r.get_self() == string_class) {
1.202 misha 646: // decode: ^string:base64[encoded[;$.strict(true|false)]]
1.219 moko 647: const char* cstr=params.count() ? params.as_string(0, PARAMETER_MUST_BE_STRING).cstr() : "";
1.169 misha 648: char* decoded=0;
649: size_t length=0;
1.202 misha 650:
651: bool strict=false;
652: if(params.count() > 1)
653: if(HashStringValue* options=params.as_hash(1)) {
654: int valid_options=0;
655: if(Value* vstrict=options->get(BASE64_STRICT_OPTION_NAME)) {
1.230 moko 656: strict=r.process(*vstrict).as_bool();
1.202 misha 657: valid_options++;
658: }
659: if(valid_options!=options->count())
660: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
661: }
662:
663: pa_base64_decode(cstr, strlen(cstr), decoded, length, strict);
1.169 misha 664: if(decoded && length){
665: if(memchr((const char*)decoded, 0, length))
1.238 moko 666: throw Exception(PARSER_RUNTIME, 0, "Invalid \\x00 character found while decode to string. Decode it to file instead.");
1.169 misha 667:
668: fix_line_breaks(decoded, length);
1.179 misha 669: if(length)
1.233 moko 670: r.write(*new String(decoded, String::L_TAINTED));
1.169 misha 671: }
1.147 paf 672: } else {
1.169 misha 673: // encode: ^str.base64[]
1.148 paf 674: VString& self=GET_SELF(r, VString);
675: const char* cstr=self.string().cstr();
1.147 paf 676: const char* encoded=pa_base64_encode(cstr, strlen(cstr));
1.233 moko 677: r.write(*new String(encoded, String::L_TAINTED/*once ?param=base64(something) was needed*/));
1.146 paf 678: }
679: }
680:
1.215 moko 681: static void _idna(Request& r, MethodParams& params) {
1.219 moko 682: if(&r.get_self() == string_class) {
1.215 moko 683: // decode: ^string:idna[encoded]
1.219 moko 684: const char* cstr=params.count() ? params.as_string(0, PARAMETER_MUST_BE_STRING).cstr() : "";
1.233 moko 685: r.write(*new String(pa_idna_decode(cstr, r.charsets.source()), String::L_TAINTED));
1.215 moko 686: } else {
687: // encode: ^str.idna[]
688: VString& self=GET_SELF(r, VString);
689: const char* cstr=self.string().cstr();
1.233 moko 690: r.write(*new String(pa_idna_encode(cstr, r.charsets.source()), String::L_TAINTED));
1.215 moko 691: }
692: }
693:
1.220 moko 694: static void _js_escape(Request& r, MethodParams&){
1.167 misha 695: const String& src=GET_SELF(r, VString).string();
1.233 moko 696: r.write(src.escape(r.charsets.source()));
1.167 misha 697: }
698:
1.220 moko 699: static void _js_unescape(Request& r, MethodParams& params){
1.167 misha 700: const String& src=params.as_string(0, PARAMETER_MUST_BE_STRING);
1.193 misha 701: if(const char* result=unescape_chars(src.cstr(), src.length(), &r.charsets.source(), true))
1.233 moko 702: r.write(*new String(result, String::L_TAINTED));
1.167 misha 703: }
704:
1.220 moko 705: static void _unescape(Request& r, MethodParams& params){
706: const String& mode=params.as_string(0, MODE_MUST_NOT_BE_CODE);
707: const String& src=params.as_string(1, PARAMETER_MUST_BE_STRING);
708:
709: Charset* from_charset=&r.charsets.client();
710:
711: if(params.count() > 2)
712: if(HashStringValue* options=params.as_hash(2)) {
713: int valid_options=0;
714: if(Value* vcharset_name=options->get(PA_CHARSET_NAME)){
1.229 moko 715: from_charset=&pa_charsets.get(vcharset_name->as_string());
1.220 moko 716: valid_options++;
717: }
718: if(valid_options!=options->count())
719: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
720: }
721:
722: bool mode_js;
723: if(mode==UNESCAPE_MODE_JS){
724: mode_js=true;
725: } else if(mode==UNESCAPE_MODE_URI){
726: mode_js=false;
727: } else {
1.228 moko 728: throw Exception(PARSER_RUNTIME, &mode, "is invalid mode, must be either '" UNESCAPE_MODE_JS "' or '" UNESCAPE_MODE_URI "'");
1.220 moko 729: }
730:
731: const char* unescaped=unescape_chars(src.cstr(), src.length(), from_charset, mode_js);
732: if(*unescaped){
1.221 moko 733: const String* result=new String(Charset::transcode(unescaped, *from_charset, r.charsets.source()), String::L_TAINTED);
1.233 moko 734: r.write(*result);
1.220 moko 735: }
736: }
737:
1.225 moko 738: static void _contains(Request& r, MethodParams& params) {
739: // empty or whitespace string is hash compatible
740: GET_SELF(r, VString).get_element(params.as_string(0, "key must be string"));
741: // ignoring result as it allways null
1.233 moko 742: r.write(VBool::get(false));
1.225 moko 743: }
744:
1.41 paf 745: // constructor
746:
1.126 paf 747: MString::MString(): Methoded("string") {
1.1 paf 748: // ^string.length[]
1.41 paf 749: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 750:
1.1 paf 751: // ^string.int[]
1.72 parser 752: // ^string.int(default)
753: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.1 paf 754: // ^string.double[]
1.72 parser 755: // ^string.double(default)
756: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.151 misha 757: // ^void.bool[]
758: // ^void.bool(default)
759: add_native_method("bool", Method::CT_DYNAMIC, _bool, 0, 1);
1.9 paf 760:
1.165 misha 761: // ^string.format[format]
1.41 paf 762: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 763:
1.15 paf 764: // ^string.left(n)
1.41 paf 765: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 766: // ^string.right(n)
1.41 paf 767: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.165 misha 768: // ^string.mid(p)
1.15 paf 769: // ^string.mid(p;n)
1.82 parser 770: add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2);
1.16 paf 771:
772: // ^string.pos[substr]
1.165 misha 773: // ^string.pos[substr](n)
774: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 2);
1.17 paf 775:
1.118 paf 776: // ^string.split[delim]
777: // ^string.split[delim][options]
1.156 misha 778: // ^string.split[delim][options][column name]
779: add_native_method("split", Method::CT_DYNAMIC, _split, 1, 3);
1.236 moko 780: // old names for backward compatibility
781: // ^string.lsplit[delim]
782: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
783: // ^string.rsplit[delim]
784: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
785:
1.32 paf 786: // ^string.match[regexp][options]
787: // ^string.match[regexp][options]{replacement-code}
1.192 misha 788: // ^string.match[regexp][options]{replacement-code}{code-if-nothing-is-found}
789: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 4);
1.49 parser 790:
1.165 misha 791: // ^string.upper[]
1.49 parser 792: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
1.165 misha 793: // ^string.lower[]
1.49 parser 794: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 795:
1.189 misha 796: // ^string:sql{query}
797: // ^string:sql{query}[options hash]
1.67 parser 798: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.71 parser 799:
800: // ^string.replace[table]
1.201 misha 801: add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 2);
1.79 parser 802:
1.189 misha 803: // ^string.save[append][file]
804: // ^string.save[file]
805: // ^string.save[file][$.append(true) $.charset[...]]
1.87 paf 806: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.109 paf 807:
1.112 paf 808: // ^string.normalize[]
809: add_native_method("normalize", Method::CT_DYNAMIC, _normalize, 0, 0);
1.133 paf 810:
811: // ^string.trim[[start|both|end][;chars]]
812: add_native_method("trim", Method::CT_DYNAMIC, _trim, 0, 2);
1.139 paf 813:
1.146 paf 814: // ^string.base64[] << encode
1.215 moko 815: // ^string:base64[encoded string] << decode
1.202 misha 816: add_native_method("base64", Method::CT_ANY, _base64, 0, 2);
1.167 misha 817:
1.215 moko 818: // ^string.idna[] << encode
819: // ^string:idna[encoded string] << decode
820: add_native_method("idna", Method::CT_ANY, _idna, 0, 1);
821:
1.168 misha 822: // ^string.js-escape[]
1.220 moko 823: add_native_method("js-escape", Method::CT_DYNAMIC, _js_escape, 0, 0);
1.189 misha 824:
1.168 misha 825: // ^string:js-unescape[escaped%uXXXXstring]
1.220 moko 826: add_native_method("js-unescape", Method::CT_STATIC, _js_unescape, 1, 1);
827:
828: // ^string:unescape[js|uri;escaped;$.charset[...]]
829: add_native_method("unescape", Method::CT_STATIC, _unescape, 2, 3);
1.225 moko 830:
831: // ^string.contains[key] for hash compatibility
832: add_native_method("contains", Method::CT_DYNAMIC, _contains, 1, 1);
1.220 moko 833: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to string.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes