Annotation of parser3/src/classes/string.C, revision 1.248
1.24 paf 1: /** @file
2: Parser: @b string parser class.
3:
1.247 moko 4: Copyright (c) 2001-2020 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"
1.241 moko 10: #include "pa_base64.h"
1.126 paf 11:
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"
1.71 parser 19: #include "pa_dictionary.h"
1.119 paf 20: #include "pa_vmethod_frame.h"
1.174 misha 21: #include "pa_vregex.h"
1.189 misha 22: #include "pa_charsets.h"
1.1 paf 23:
1.248 ! moko 24: volatile const char * IDENT_STRING_C="$Id: string.C,v 1.247 2020/12/15 17:10:29 moko Exp $";
1.203 moko 25:
1.41 paf 26: // class
27:
1.126 paf 28: class MString: public Methoded {
1.41 paf 29: public:
1.126 paf 30: MString();
1.41 paf 31: };
1.1 paf 32:
1.126 paf 33: // global variable
34:
1.224 moko 35: DECLARE_CLASS_VAR(string, new MString);
1.126 paf 36:
1.196 moko 37: // void class, inherited from string and thus should be inited afterwards
38:
39: class MVoid: public Methoded {
40: public:
41: MVoid();
42: };
43:
44: // void global variable should be after string global variable
45:
1.224 moko 46: DECLARE_CLASS_VAR(void, new MVoid);
1.196 moko 47:
1.126 paf 48: // defines for statics
49:
50: #define MATCH_VAR_NAME "match"
1.162 misha 51: #define TRIM_START_OPTION "left"
52: #define TRIM_END_OPTION "right"
1.133 paf 53: #define TRIM_BOTH_OPTION "both"
1.126 paf 54:
1.189 misha 55: #define MODE_APPEND "append"
56:
1.220 moko 57: #define UNESCAPE_MODE_JS "js"
58: #define UNESCAPE_MODE_URI "uri"
59:
1.126 paf 60: // statics
61:
62: static const String match_var_name(MATCH_VAR_NAME);
63:
1.1 paf 64: // methods
65:
1.126 paf 66: static void _length(Request& r, MethodParams&) {
1.163 misha 67: double result=GET_SELF(r, VString).string().length(r.charsets.source());
1.233 moko 68: r.write(*new VDouble(result));
1.1 paf 69: }
70:
1.126 paf 71: static void _int(Request& r, MethodParams& params) {
72: const String& self_string=GET_SELF(r, VString).string();
1.72 parser 73: int converted;
1.206 moko 74:
75: if(self_string.is_empty()) {
1.144 paf 76: if(params.count()>0)
77: converted=params.as_int(0, "default must be int", r); // (default)
1.84 parser 78: else
1.206 moko 79: throw Exception(PARSER_RUNTIME, 0, "unable to convert empty string without default specified");
80: } else {
81: try {
82: converted=self_string.as_int();
83: } catch(...) { // convert problem
84: if(params.count()>0)
85: converted=params.as_int(0, "default must be int", r); // (default)
86: else
87: rethrow; // we have a problem when no default
88: }
1.72 parser 89: }
1.206 moko 90:
1.233 moko 91: r.write(*new VInt(converted));
1.1 paf 92: }
93:
1.126 paf 94: static void _double(Request& r, MethodParams& params) {
95: const String& self_string=GET_SELF(r, VString).string();
1.206 moko 96:
97: if(self_string.is_empty()) {
1.144 paf 98: if(params.count()>0)
1.233 moko 99: r.write(*new VDouble(params.as_double(0, "default must be double", r))); // (default)
1.84 parser 100: else
1.206 moko 101: throw Exception(PARSER_RUNTIME, 0, "unable to convert empty string without default specified");
102: } else {
103: try {
1.233 moko 104: r.write(*new VDouble(self_string.as_double()));
1.206 moko 105: } catch(...) { // convert problem
106: if(params.count()>0)
1.233 moko 107: r.write(*new VDouble(params.as_double(0, "default must be double", r))); // (default)
1.206 moko 108: else
109: rethrow; // we have a problem when no default
110: }
1.72 parser 111: }
1.1 paf 112: }
113:
1.151 misha 114: static void _bool(Request& r, MethodParams& params) {
115: const String& self_string=GET_SELF(r, VString).string();
116: bool converted;
1.206 moko 117: const char *str=self_string.cstr();
118:
119: if(self_string.is_empty()) {
120: if(params.count()>0)
121: converted=params.as_bool(0, "default must be bool", r); // (default)
122: else
123: throw Exception(PARSER_RUNTIME, 0, "unable to convert empty string without default specified");
1.207 moko 124: } else if( (str[0]=='T' || str[0]=='t') && (str[1]=='R' || str[1]=='r') && (str[2]=='U' || str[2]=='u') &&
1.206 moko 125: (str[3]=='E' || str[3]=='e') && str[4]==0 ) { // "true"
126: converted=true;
1.207 moko 127: } else if( (str[0]=='F' || str[0]=='f') && (str[1]=='A' || str[1]=='a') && (str[2]=='L' || str[2]=='l') &&
1.206 moko 128: (str[3]=='S' || str[3]=='s') && (str[4]=='E' || str[4]=='e') && str[5]==0 ) { // "false"
129: converted=false;
130: } else {
1.158 misha 131: try {
132: converted=self_string.as_bool();
1.206 moko 133: } catch(...) { // convert problem
134: if(params.count()>0)
135: converted=params.as_bool(0, "default must be bool", r); // (default)
136: else
137: rethrow; // we have a problem when no default
1.158 misha 138: }
1.151 misha 139: }
140:
1.233 moko 141: r.write(VBool::get(converted));
1.151 misha 142: }
143:
1.126 paf 144: /*not static*/void _string_format(Request& r, MethodParams& params) {
1.9 paf 145:
1.126 paf 146: Value& fmt_maybe_code=params[0];
1.95 paf 147: // for some time due to stupid {} in original design
1.99 paf 148: const String& fmt=r.process_to_string(fmt_maybe_code);
1.9 paf 149:
1.159 misha 150: const char* buf=format(r.get_self().as_double(), fmt.trim().cstrm());
1.63 parser 151:
1.233 moko 152: r.write(String(buf));
1.9 paf 153: }
1.11 paf 154:
1.126 paf 155: static void _left(Request& r, MethodParams& params) {
1.244 moko 156: int sn=params.as_int(0, "n must be int", r);
1.126 paf 157: const String& string=GET_SELF(r, VString).string();
1.244 moko 158: r.write(sn<0 ? string : string.mid(r.charsets.source(), 0, sn));
1.15 paf 159: }
160:
1.126 paf 161: static void _right(Request& r, MethodParams& params) {
1.244 moko 162: int sn=params.as_int(0, "n must be int", r);
1.216 moko 163: if(sn>0){
1.244 moko 164: size_t n=sn;
1.216 moko 165: const String& string=GET_SELF(r, VString).string();
166: size_t length=string.length(r.charsets.source());
1.233 moko 167: r.write(n<length ? string.mid(r.charsets.source(), length-n, length, length) : string);
1.216 moko 168: }
1.15 paf 169: }
170:
1.126 paf 171: static void _mid(Request& r, MethodParams& params) {
172: const String& string=GET_SELF(r, VString).string();
1.83 parser 173:
1.245 moko 174: int begin=params.as_int(0, "p must be int", r);
175: if(begin<0)
176: throw Exception(PARSER_RUNTIME, 0, "p(%d) must be >=0", begin);
1.138 paf 177:
178: size_t end;
1.164 misha 179: size_t length=0;
1.245 moko 180:
1.138 paf 181: if(params.count()>1) {
1.245 moko 182: int n=params.as_int(1, "n must be int", r);
183: if(n<0)
184: throw Exception(PARSER_RUNTIME, 0, "n(%d) must be >=0", n);
185: end=begin+n;
1.164 misha 186: } else {
187: length=string.length(r.charsets.source());
188: end=length;
189: }
1.163 misha 190:
1.233 moko 191: r.write(string.mid(r.charsets.source(), begin, end, length));
1.15 paf 192: }
193:
1.126 paf 194: static void _pos(Request& r, MethodParams& params) {
195: Value& substr=params.as_no_junction(0, "substr must not be code");
1.16 paf 196:
1.126 paf 197: const String& string=GET_SELF(r, VString).string();
1.245 moko 198: int offset=0;
1.165 misha 199: if(params.count()>1){
200: offset=params.as_int(1, "n must be int", r);
201: if(offset<0)
1.227 moko 202: throw Exception(PARSER_RUNTIME, 0, "n(%d) must be >=0", offset);
1.165 misha 203: }
204:
1.245 moko 205: r.write(*new VInt((int)string.pos(r.charsets.source(), substr.as_string(), offset)));
1.16 paf 206: }
207:
1.227 moko 208: static void split_list(MethodParams& params, int paramIndex, const String& string, ArrayString& result) {
1.126 paf 209: Value& delim_value=params.as_no_junction(paramIndex, "delimiter must not be code");
1.227 moko 210: string.split(result, 0, delim_value.as_string());
1.19 paf 211: }
212:
1.118 paf 213: #define SPLIT_LEFT 0x0001
214: #define SPLIT_RIGHT 0x0010
215: #define SPLIT_HORIZONTAL 0x0100
216: #define SPLIT_VERTICAL 0x1000
217:
1.126 paf 218: static int split_options(const String* options) {
1.118 paf 219: struct Split_option {
1.126 paf 220: const char* keyL;
221: const char* keyU;
1.118 paf 222: int setBit;
223: int checkBit;
224: } split_option[]={
225: {"l", "L", SPLIT_LEFT, SPLIT_RIGHT}, // 0xVHRL
226: {"r", "R", SPLIT_RIGHT, SPLIT_LEFT},
227: {"h", "H", SPLIT_HORIZONTAL, SPLIT_VERTICAL},
228: {"v", "V", SPLIT_VERTICAL, SPLIT_HORIZONTAL},
1.130 paf 229: {0, 0, 0, 0}
1.118 paf 230: };
231:
232: int result=0;
1.126 paf 233: if(options) {
1.118 paf 234: for(Split_option *o=split_option; o->keyL; o++)
1.126 paf 235: if(options->pos(o->keyL)!=STRING_NOT_FOUND
236: || (o->keyU && options->pos(o->keyU)!=STRING_NOT_FOUND)) {
1.118 paf 237: if(result & o->checkBit)
1.238 moko 238: throw Exception(PARSER_RUNTIME, options, "conflicting split options");
1.118 paf 239: result |= o->setBit;
240: }
241: }
242:
243: return result;
244: }
245:
1.156 misha 246: static Table& split_vertical(ArrayString& pieces, bool right, const String* column_name) {
1.126 paf 247: Table::columns_type columns(new ArrayString);
1.156 misha 248: *columns+=column_name;
1.19 paf 249:
1.126 paf 250: Table& table=*new Table(columns, pieces.count());
1.118 paf 251: if(right) { // right
1.126 paf 252: for(int i=pieces.count(); --i>=0; ) {
253: Table::element_type row(new ArrayString);
254: *row+=pieces[i];
255: table+=row;
1.118 paf 256: }
257: } else { // left
1.126 paf 258: Array_iterator<const String*> i(pieces);
1.118 paf 259: while(i.has_next()) {
1.126 paf 260: Table::element_type row(new ArrayString);
261: *row+=i.next();
262: table+=row;
1.118 paf 263: }
1.61 parser 264: }
1.118 paf 265:
1.126 paf 266: return table;
1.19 paf 267: }
268:
1.128 paf 269: static Table& split_horizontal(ArrayString& pieces, bool right) {
1.126 paf 270: Table& table=*new Table(Table::columns_type(0) /* nameless */);
271: Table::element_type row(new ArrayString(pieces.count()));
1.118 paf 272: if(right) { // right
1.131 paf 273: for(int i=pieces.count(); --i>=0; )
1.126 paf 274: *row+=pieces[i];
1.118 paf 275: } else { // left
1.126 paf 276: for(Array_iterator<const String*> i(pieces); i.has_next(); )
277: *row+=i.next();
1.118 paf 278: }
1.126 paf 279: table+=row;
1.118 paf 280:
1.126 paf 281: return table;
1.118 paf 282: }
283:
1.238 moko 284: static void split_with_options(Request& r, MethodParams& params, int bits) {
1.126 paf 285: const String& string=GET_SELF(r, VString).string();
1.176 misha 286: size_t params_count=params.count();
1.19 paf 287:
1.126 paf 288: ArrayString pieces;
1.128 paf 289: split_list(params, 0, string, pieces);
1.19 paf 290:
1.118 paf 291: if(!bits) {
1.126 paf 292: const String* options=0;
1.176 misha 293: if(params_count>1)
1.187 misha 294: options=¶ms.as_string(1, OPTIONS_MUST_NOT_BE_CODE);
1.118 paf 295: bits=split_options(options);
296: }
1.21 paf 297:
1.118 paf 298: bool right=(bits & SPLIT_RIGHT) != 0;
299: bool horizontal=(bits & SPLIT_HORIZONTAL) !=0;
1.156 misha 300:
301: const String* column_name=0;
1.176 misha 302: if(params_count>2){
1.156 misha 303: column_name=¶ms.as_string(2, COLUMN_NAME_MUST_BE_STRING);
1.178 misha 304: if (horizontal && !column_name->is_empty())
1.238 moko 305: throw Exception(PARSER_RUNTIME, column_name, "column name can't be specified with horisontal split");
1.156 misha 306: }
1.178 misha 307: if(!column_name || column_name->is_empty())
1.156 misha 308: column_name=new String("piece");
309:
310: Table& table=horizontal?split_horizontal(pieces, right):split_vertical(pieces, right, column_name);
1.17 paf 311:
1.233 moko 312: r.write(*new VTable(&table));
1.118 paf 313: }
1.126 paf 314: static void _split(Request& r, MethodParams& params) {
315: split_with_options(r, params, 0 /* maybe-determine from param #2 */);
1.118 paf 316: }
1.126 paf 317: static void _lsplit(Request& r, MethodParams& params) {
318: split_with_options(r, params, SPLIT_LEFT);
1.118 paf 319: }
1.126 paf 320: static void _rsplit(Request& r, MethodParams& params) {
321: split_with_options(r, params, SPLIT_RIGHT);
1.17 paf 322: }
323:
1.126 paf 324: static void search_action(Table& table, Table::element_type row, int, int, int, int, void *) {
1.28 paf 325: if(row)
326: table+=row;
1.27 paf 327: }
328:
1.74 parser 329: #ifndef DOXYGEN
1.27 paf 330: struct Replace_action_info {
1.181 misha 331: Request* request;
332: const String* src;
333: String* dest;
1.126 paf 334: VTable* vtable;
335: Value* replacement_code;
1.27 paf 336: };
1.74 parser 337: #endif
1.105 paf 338: /// @todo they can do $global[$result] there, getting pointer to later-invalid local var, kill this
1.238 moko 339: static void replace_action(Table& table, ArrayString* row, int prestart, int prefinish, int poststart, int postfinish, void *info) {
1.27 paf 340: Replace_action_info& ai=*static_cast<Replace_action_info *>(info);
1.31 paf 341: if(row) { // begin&middle
1.104 paf 342: // piece from last match['prestart'] to beginning of this match['prefinish']
343: if(prestart!=prefinish)
344: *ai.dest << ai.src->mid(prestart, prefinish);//ai.dest->APPEND_CONST("-");
1.51 parser 345: // store found parts in one-record VTable
1.126 paf 346: if(table.count()) // middle
1.32 paf 347: table.put(0, row);
348: else // begin
1.30 paf 349: table+=row;
1.181 misha 350:
1.30 paf 351: { // execute 'replacement_code' in 'table' context
1.181 misha 352: if(ai.replacement_code){
353: ai.vtable->set_table(table);
354: *ai.dest << ai.request->process_to_string(*ai.replacement_code);
355: }
1.29 paf 356: }
357: } else // end
1.104 paf 358: *ai.dest << ai.src->mid(poststart, postfinish);
1.27 paf 359: }
360:
1.126 paf 361: static void _match(Request& r, MethodParams& params) {
1.174 misha 362: size_t params_count=params.count();
363:
1.126 paf 364: Value& regexp=params.as_no_junction(0, "regexp must not be code");
1.187 misha 365: Value* options=(params_count>1)?¶ms.as_no_junction(1, OPTIONS_MUST_NOT_BE_CODE):0;
1.174 misha 366:
367: VRegex* vregex;
368: VRegexCleaner vrcleaner;
1.126 paf 369:
1.188 misha 370: if(Value* value=regexp.as(VREGEX_TYPE)){
1.174 misha 371: if(options && options->is_defined())
1.237 moko 372: throw Exception(PARSER_RUNTIME, 0, "you can not specify regex-object and options together");
1.174 misha 373: vregex=static_cast<VRegex*>(value);
374: } else {
1.237 moko 375: vregex=new VRegex(r.charsets.source(), ®exp.as_string(), (options) ? (&options->as_string()) : 0);
1.175 misha 376: vregex->study();
1.174 misha 377: vrcleaner.vregex=vregex;
378: }
1.126 paf 379:
380: const String& src=GET_SELF(r, VString).string();
1.152 misha 381: int matches_count=0;
1.174 misha 382:
383: if(params_count<3) { // search
1.237 moko 384: Table* table=src.match(vregex, search_action, 0, matches_count);
1.174 misha 385:
1.152 misha 386: if(table){
1.233 moko 387: r.write(*new VTable(table));
1.152 misha 388: } else {
1.233 moko 389: r.write(*new VInt(matches_count));
1.152 misha 390: }
391:
1.27 paf 392: } else { // replace
1.181 misha 393:
394: Value* replacement_code=0;
395: bool is_junction=false;
396:
397: Value* replacement=¶ms[2];
398: if(replacement->get_junction()){
399: replacement_code=replacement;
400: is_junction=true;
401: } else if(replacement->is_string()){
402: if(replacement->is_defined())
403: replacement_code=replacement;
404: } else if(!replacement->is_void())
1.238 moko 405: throw Exception(PARSER_RUNTIME, 0, "replacement option should be junction or string");
1.106 paf 406:
1.238 moko 407: Value* default_code=(params_count==4) ? ¶ms.as_junction(3, "default value must be code") : 0;
1.192 misha 408:
1.126 paf 409: String result;
410: VTable* vtable=new VTable;
1.130 paf 411: Replace_action_info info={
412: &r,
413: &src,
414: &result,
415: vtable,
1.181 misha 416: replacement_code
1.130 paf 417: };
1.181 misha 418:
1.191 misha 419: if(is_junction){
1.211 moko 420: Temp_value_element temp(r, *replacement_code->get_junction()->method_frame, match_var_name, vtable);
1.191 misha 421: src.match(vregex, replace_action, &info, matches_count);
422: } else {
423: src.match(vregex, replace_action, &info, matches_count);
424: }
1.181 misha 425:
1.192 misha 426: if(!matches_count && default_code)
427: r.process_write(*default_code);
428: else
1.233 moko 429: r.write(result);
1.27 paf 430: }
1.24 paf 431: }
432:
1.238 moko 433: static void change_case(Request& r, MethodParams&, String::Change_case_kind kind) {
1.126 paf 434: const String& src=GET_SELF(r, VString).string();
1.49 parser 435:
1.233 moko 436: r.write(src.change_case(r.charsets.source(), kind));
1.49 parser 437: }
1.126 paf 438: static void _upper(Request& r, MethodParams& params) {
439: change_case(r, params, String::CC_UPPER);
1.49 parser 440: }
1.126 paf 441: static void _lower(Request& r, MethodParams& params) {
442: change_case(r, params, String::CC_LOWER);
1.49 parser 443: }
444:
1.65 parser 445: #ifndef DOXYGEN
1.126 paf 446: class String_sql_event_handlers: public SQL_Driver_query_event_handlers {
447: bool got_column;
1.65 parser 448: public:
1.126 paf 449: bool got_cell;
1.208 moko 450: const String* result;
1.126 paf 451: public:
1.240 moko 452: String_sql_event_handlers():
1.126 paf 453: got_column(false),
454: got_cell(false),
1.208 moko 455: result(&String::Empty) {}
1.65 parser 456:
1.128 paf 457: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
1.124 paf 458: if(got_column) {
1.240 moko 459: error=SQL_Error("result must contain exactly one column");
1.124 paf 460: return true;
461: }
1.65 parser 462: got_column=true;
1.124 paf 463: return false;
1.65 parser 464: }
1.124 paf 465: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
466: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
1.210 moko 467: bool add_row_cell(SQL_Error& error, const char* str, size_t) {
1.124 paf 468: if(got_cell) {
1.240 moko 469: error=SQL_Error("result must not contain more then one row");
1.124 paf 470: return true;
471: }
472: try {
473: got_cell=true;
1.208 moko 474: result=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */ );
1.124 paf 475: return false;
476: } catch(...) {
1.235 moko 477: error=SQL_Error("exception occurred in String_sql_event_handlers::add_row_cell");
1.124 paf 478: return true;
479: }
1.65 parser 480: }
481: };
482: #endif
1.239 moko 483:
1.141 paf 484: extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders);
485: extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders);
486:
1.204 moko 487: const String* sql_result_string(Request& r, MethodParams& params, Value*& default_code) {
1.126 paf 488: Value& statement=params.as_junction(0, "statement must be code");
1.53 parser 489:
1.141 paf 490: HashStringValue* bind=0;
1.160 misha 491: ulong limit=SQL_NO_LIMIT;
1.70 parser 492: ulong offset=0;
1.81 parser 493: default_code=0;
1.199 misha 494: if(params.count()>1)
1.205 misha 495: if(HashStringValue* options=params.as_hash(1, "sql options")) {
1.199 misha 496: int valid_options=0;
497: if(Value* vbind=options->get(sql_bind_name)) {
498: valid_options++;
499: bind=vbind->get_hash();
500: }
501: if(Value* vlimit=options->get(sql_limit_name)) {
502: valid_options++;
1.230 moko 503: limit=(ulong)r.process(*vlimit).as_double();
1.199 misha 504: }
505: if(Value* voffset=options->get(sql_offset_name)) {
506: valid_options++;
1.230 moko 507: offset=(ulong)r.process(*voffset).as_double();
1.199 misha 508: }
509: if((default_code=options->get(sql_default_name))) {
510: valid_options++;
511: }
512: if(valid_options!=options->count())
513: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.200 misha 514: }
1.70 parser 515:
1.141 paf 516: SQL_Driver::Placeholder* placeholders=0;
517: uint placeholders_count=0;
518: if(bind)
519: placeholders_count=marshal_binds(*bind, placeholders);
520:
1.99 paf 521: const String& statement_string=r.process_to_string(statement);
1.232 moko 522: const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection());
1.183 misha 523:
1.240 moko 524: String_sql_event_handlers handlers;
1.160 misha 525:
1.240 moko 526: r.connection()->query(statement_cstr, placeholders_count, placeholders, offset, limit, handlers, statement_string);
1.53 parser 527:
1.141 paf 528: if(bind)
529: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
530:
1.65 parser 531: if(!handlers.got_cell)
532: return 0; // no lines, caller should return second param[default value]
1.62 parser 533:
1.208 moko 534: return handlers.result;
1.53 parser 535: }
536:
1.126 paf 537: static void _sql(Request& r, MethodParams& params) {
1.53 parser 538:
1.126 paf 539: Value* default_code;
1.204 moko 540: const String* string=sql_result_string(r, params, default_code);
1.62 parser 541: if(!string) {
1.81 parser 542: if(default_code) {
1.99 paf 543: string=&r.process_to_string(*default_code);
1.68 parser 544: } else
1.238 moko 545: throw Exception(PARSER_RUNTIME, 0, "produced no result, but no default option specified");
1.62 parser 546: }
1.100 paf 547:
1.233 moko 548: r.write(*string);
1.53 parser 549: }
550:
1.126 paf 551: static void _replace(Request& r, MethodParams& params) {
552: const String& src=GET_SELF(r, VString).string();
1.71 parser 553:
1.201 misha 554: if(params.count()==1) {
555: // ^string.replace[table]
1.248 ! moko 556: if(Table* table=params.as_table(0, "param")){
! 557: Dictionary dict(*table);
! 558: r.write(src.replace(dict));
! 559: } else
! 560: r.write(src);
1.201 misha 561: } else {
562: // ^string.replace[from-string;to-string]
1.238 moko 563: Dictionary dict(params.as_string(0, "from must be string"), params.as_string(1, "to must be string"));
1.233 moko 564: r.write(src.replace(dict));
1.201 misha 565: }
1.71 parser 566:
567: }
1.79 parser 568:
1.126 paf 569: static void _save(Request& r, MethodParams& params) {
1.189 misha 570: bool do_append=false;
571: Charset* asked_charset=0;
572:
573: size_t file_name_index=0;
1.214 moko 574: if(params.count()>1) {
1.189 misha 575: if(HashStringValue* options=params.as_no_junction(1, "second parameter should be string or hash").get_hash()){
1.205 misha 576: // ^file.save[filespec;$.charset[] $.append(true)]
1.190 misha 577: int valid_options=0;
1.189 misha 578: if(Value* vcharset_name=options->get(PA_CHARSET_NAME)){
1.229 moko 579: asked_charset=&pa_charsets.get(vcharset_name->as_string());
1.189 misha 580: valid_options++;
581: }
582: if(Value* vappend=options->get(MODE_APPEND)){
583: do_append=vappend->as_bool();
584: valid_options++;
585: }
586: if(valid_options != options->count())
1.194 misha 587: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.189 misha 588: } else {
1.205 misha 589: // ^file.save[append;filespec]
1.189 misha 590: const String& mode=params.as_string(0, "mode must be string");
591: if(mode==MODE_APPEND){
592: do_append=true;
593: file_name_index++;
594: } else
595: throw Exception(PARSER_RUNTIME,
596: &mode,
597: "unknown mode, must be 'append'");
598: }
1.214 moko 599: }
1.79 parser 600:
1.189 misha 601: const String& file_name=params.as_string(file_name_index, FILE_NAME_MUST_BE_STRING);
1.126 paf 602: const String& src=GET_SELF(r, VString).string();
1.79 parser 603:
1.209 moko 604: String::Body sbody=src.cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets);
1.87 paf 605:
1.79 parser 606: // write
1.246 moko 607: file_write(r.charsets, r.full_disk_path(file_name), sbody.cstr(), sbody.length(), true, do_append, asked_charset);
1.79 parser 608: }
609:
1.126 paf 610: static void _normalize(Request& r, MethodParams&) {
611: const String& src=GET_SELF(r, VString).string();
612:
1.233 moko 613: r.write(src);
1.109 paf 614: }
615:
1.133 paf 616: static void _trim(Request& r, MethodParams& params) {
617: const String& src=GET_SELF(r, VString).string();
618:
619: String::Trim_kind kind=String::TRIM_BOTH;
1.176 misha 620: size_t params_count=params.count();
1.133 paf 621: const char* chars=0;
1.176 misha 622: if(params_count>0) {
623: const String& skind=params.as_string(0, "'where' must be string");
1.214 moko 624: if(!skind.is_empty()) {
1.162 misha 625: if(skind==TRIM_BOTH_OPTION)
626: kind=String::TRIM_BOTH;
627: else if(skind==TRIM_START_OPTION || skind=="start")
1.137 paf 628: kind=String::TRIM_START;
1.162 misha 629: else if(skind==TRIM_END_OPTION || skind=="end")
1.137 paf 630: kind=String::TRIM_END;
1.218 moko 631: else if(params_count==1)
632: chars=skind.cstr();
1.137 paf 633: else
1.238 moko 634: throw Exception(PARSER_RUNTIME, &skind, "'kind' must be one of " TRIM_START_OPTION ", " TRIM_BOTH_OPTION ", " TRIM_END_OPTION);
1.214 moko 635: }
1.133 paf 636:
1.176 misha 637: if(params_count>1) {
1.136 paf 638: const String& schars=params.as_string(1, "'chars' must be string");
1.178 misha 639: if(!schars.is_empty())
1.137 paf 640: chars=schars.cstr();
1.136 paf 641: }
1.133 paf 642: }
643:
1.233 moko 644: r.write(src.trim(kind, chars, &r.charsets.source()));
1.133 paf 645: }
646:
1.241 moko 647: Base64Options base64_encode_options(Request& r, HashStringValue* options) {
648: Base64Options result;
649: if(options) {
650: int valid_options=0;
651: for(HashStringValue::Iterator i(*options); i; i.next()) {
652: String::Body key=i.key();
653: Value* value=i.value();
654: if(key == "pad") {
655: result.pad=r.process(*value).as_bool();
656: valid_options++;
657: } else if(key == "wrap") {
658: result.wrap=r.process(*value).as_bool();
659: valid_options++;
660: } else if(key == "url-safe") {
661: if(r.process(*value).as_bool())
662: result.set_url_safe_abc();
663: valid_options++;
664: }
665: }
666:
667: if(valid_options != options->count())
668: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
669: }
670: return result;
671: }
672:
673: Base64Options base64_decode_options(Request& r, HashStringValue* options) {
674: Base64Options result;
675: if(options) {
676: int valid_options=0;
677: for(HashStringValue::Iterator i(*options); i; i.next() ) {
678: String::Body key=i.key();
679: Value* value=i.value();
680: if(key == "pad") {
681: result.pad=r.process(*value).as_bool();
682: valid_options++;
683: } else if(key == "strict") {
684: result.strict=r.process(*value).as_bool();
685: valid_options++;
686: } else if(key == "url-safe") {
687: if(r.process(*value).as_bool())
688: result.set_url_safe_abc();
689: valid_options++;
690: }
691: }
692:
693: if(valid_options != options->count())
694: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
695: }
696: return result;
697: }
698:
1.146 paf 699: static void _base64(Request& r, MethodParams& params) {
1.219 moko 700: if(&r.get_self() == string_class) {
1.241 moko 701: // decode: ^string:base64[encoded[;options]]
1.219 moko 702: const char* cstr=params.count() ? params.as_string(0, PARAMETER_MUST_BE_STRING).cstr() : "";
1.241 moko 703: Base64Options options = base64_decode_options(r, params.count() > 1 ? params.as_hash(1) : NULL);
704:
1.169 misha 705: char* decoded=0;
1.243 moko 706: size_t length=pa_base64_decode(cstr, strlen(cstr), decoded, options);
1.202 misha 707:
1.169 misha 708: if(decoded && length){
1.242 moko 709: if(memchr(decoded, 0, length))
710: throw Exception(PARSER_RUNTIME, 0, "Invalid \\x00 character found while decoding to string. Decode to file instead.");
1.169 misha 711:
712: fix_line_breaks(decoded, length);
1.242 moko 713:
1.179 misha 714: if(length)
1.233 moko 715: r.write(*new String(decoded, String::L_TAINTED));
1.169 misha 716: }
1.147 paf 717: } else {
1.241 moko 718: // encode: ^str.base64[options]
1.148 paf 719: VString& self=GET_SELF(r, VString);
720: const char* cstr=self.string().cstr();
1.241 moko 721: Base64Options options = base64_encode_options(r, params.count() ? params.as_hash(0) : NULL);
722: const char* encoded=pa_base64_encode(cstr, strlen(cstr), options);
723: r.write(*new String(encoded, String::L_TAINTED /*once ?param=base64(something) was needed*/ ));
1.146 paf 724: }
725: }
726:
1.215 moko 727: static void _idna(Request& r, MethodParams& params) {
1.219 moko 728: if(&r.get_self() == string_class) {
1.215 moko 729: // decode: ^string:idna[encoded]
1.219 moko 730: const char* cstr=params.count() ? params.as_string(0, PARAMETER_MUST_BE_STRING).cstr() : "";
1.233 moko 731: r.write(*new String(pa_idna_decode(cstr, r.charsets.source()), String::L_TAINTED));
1.215 moko 732: } else {
733: // encode: ^str.idna[]
734: VString& self=GET_SELF(r, VString);
735: const char* cstr=self.string().cstr();
1.233 moko 736: r.write(*new String(pa_idna_encode(cstr, r.charsets.source()), String::L_TAINTED));
1.215 moko 737: }
738: }
739:
1.220 moko 740: static void _js_escape(Request& r, MethodParams&){
1.167 misha 741: const String& src=GET_SELF(r, VString).string();
1.233 moko 742: r.write(src.escape(r.charsets.source()));
1.167 misha 743: }
744:
1.220 moko 745: static void _js_unescape(Request& r, MethodParams& params){
1.167 misha 746: const String& src=params.as_string(0, PARAMETER_MUST_BE_STRING);
1.193 misha 747: if(const char* result=unescape_chars(src.cstr(), src.length(), &r.charsets.source(), true))
1.233 moko 748: r.write(*new String(result, String::L_TAINTED));
1.167 misha 749: }
750:
1.220 moko 751: static void _unescape(Request& r, MethodParams& params){
752: const String& mode=params.as_string(0, MODE_MUST_NOT_BE_CODE);
753: const String& src=params.as_string(1, PARAMETER_MUST_BE_STRING);
754:
755: Charset* from_charset=&r.charsets.client();
756:
757: if(params.count() > 2)
758: if(HashStringValue* options=params.as_hash(2)) {
759: int valid_options=0;
760: if(Value* vcharset_name=options->get(PA_CHARSET_NAME)){
1.229 moko 761: from_charset=&pa_charsets.get(vcharset_name->as_string());
1.220 moko 762: valid_options++;
763: }
764: if(valid_options!=options->count())
765: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
766: }
767:
768: bool mode_js;
769: if(mode==UNESCAPE_MODE_JS){
770: mode_js=true;
771: } else if(mode==UNESCAPE_MODE_URI){
772: mode_js=false;
773: } else {
1.228 moko 774: throw Exception(PARSER_RUNTIME, &mode, "is invalid mode, must be either '" UNESCAPE_MODE_JS "' or '" UNESCAPE_MODE_URI "'");
1.220 moko 775: }
776:
777: const char* unescaped=unescape_chars(src.cstr(), src.length(), from_charset, mode_js);
778: if(*unescaped){
1.221 moko 779: const String* result=new String(Charset::transcode(unescaped, *from_charset, r.charsets.source()), String::L_TAINTED);
1.233 moko 780: r.write(*result);
1.220 moko 781: }
782: }
783:
1.225 moko 784: static void _contains(Request& r, MethodParams& params) {
785: // empty or whitespace string is hash compatible
786: GET_SELF(r, VString).get_element(params.as_string(0, "key must be string"));
787: // ignoring result as it allways null
1.233 moko 788: r.write(VBool::get(false));
1.225 moko 789: }
790:
1.41 paf 791: // constructor
792:
1.126 paf 793: MString::MString(): Methoded("string") {
1.1 paf 794: // ^string.length[]
1.41 paf 795: add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0);
1.6 paf 796:
1.1 paf 797: // ^string.int[]
1.72 parser 798: // ^string.int(default)
799: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.1 paf 800: // ^string.double[]
1.72 parser 801: // ^string.double(default)
802: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.151 misha 803: // ^void.bool[]
804: // ^void.bool(default)
805: add_native_method("bool", Method::CT_DYNAMIC, _bool, 0, 1);
1.9 paf 806:
1.165 misha 807: // ^string.format[format]
1.41 paf 808: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.14 paf 809:
1.15 paf 810: // ^string.left(n)
1.41 paf 811: add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1);
1.15 paf 812: // ^string.right(n)
1.41 paf 813: add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1);
1.165 misha 814: // ^string.mid(p)
1.15 paf 815: // ^string.mid(p;n)
1.82 parser 816: add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2);
1.16 paf 817:
818: // ^string.pos[substr]
1.165 misha 819: // ^string.pos[substr](n)
820: add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 2);
1.17 paf 821:
1.118 paf 822: // ^string.split[delim]
823: // ^string.split[delim][options]
1.156 misha 824: // ^string.split[delim][options][column name]
825: add_native_method("split", Method::CT_DYNAMIC, _split, 1, 3);
1.236 moko 826: // old names for backward compatibility
827: // ^string.lsplit[delim]
828: add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1);
829: // ^string.rsplit[delim]
830: add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1);
831:
1.32 paf 832: // ^string.match[regexp][options]
833: // ^string.match[regexp][options]{replacement-code}
1.192 misha 834: // ^string.match[regexp][options]{replacement-code}{code-if-nothing-is-found}
835: add_native_method("match", Method::CT_DYNAMIC, _match, 1, 4);
1.49 parser 836:
1.165 misha 837: // ^string.upper[]
1.49 parser 838: add_native_method("upper", Method::CT_DYNAMIC, _upper, 0, 0);
1.165 misha 839: // ^string.lower[]
1.49 parser 840: add_native_method("lower", Method::CT_DYNAMIC, _lower, 0, 0);
1.53 parser 841:
1.189 misha 842: // ^string:sql{query}
843: // ^string:sql{query}[options hash]
1.67 parser 844: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.71 parser 845:
846: // ^string.replace[table]
1.201 misha 847: add_native_method("replace", Method::CT_DYNAMIC, _replace, 1, 2);
1.79 parser 848:
1.189 misha 849: // ^string.save[append][file]
850: // ^string.save[file]
851: // ^string.save[file][$.append(true) $.charset[...]]
1.87 paf 852: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.109 paf 853:
1.112 paf 854: // ^string.normalize[]
855: add_native_method("normalize", Method::CT_DYNAMIC, _normalize, 0, 0);
1.133 paf 856:
857: // ^string.trim[[start|both|end][;chars]]
858: add_native_method("trim", Method::CT_DYNAMIC, _trim, 0, 2);
1.139 paf 859:
1.146 paf 860: // ^string.base64[] << encode
1.215 moko 861: // ^string:base64[encoded string] << decode
1.202 misha 862: add_native_method("base64", Method::CT_ANY, _base64, 0, 2);
1.167 misha 863:
1.215 moko 864: // ^string.idna[] << encode
865: // ^string:idna[encoded string] << decode
866: add_native_method("idna", Method::CT_ANY, _idna, 0, 1);
867:
1.168 misha 868: // ^string.js-escape[]
1.220 moko 869: add_native_method("js-escape", Method::CT_DYNAMIC, _js_escape, 0, 0);
1.189 misha 870:
1.168 misha 871: // ^string:js-unescape[escaped%uXXXXstring]
1.220 moko 872: add_native_method("js-unescape", Method::CT_STATIC, _js_unescape, 1, 1);
873:
874: // ^string:unescape[js|uri;escaped;$.charset[...]]
875: add_native_method("unescape", Method::CT_STATIC, _unescape, 2, 3);
1.225 moko 876:
877: // ^string.contains[key] for hash compatibility
878: add_native_method("contains", Method::CT_DYNAMIC, _contains, 1, 1);
1.220 moko 879: }
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