| 1 | // String.C -*- C++ -*- |
| 2 | // Copyright (c) 1997, 1998 Etienne BERNARD |
| 3 | |
| 4 | // This program is free software; you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation; either version 2 of the License, or |
| 7 | // any later version. |
| 8 | |
| 9 | // This program is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with this program; if not, write to the Free Software |
| 16 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
| 17 | |
| 18 | #include "String.H" |
| 19 | |
| 20 | #include <cstring> |
| 21 | #include <cctype> |
| 22 | #include <sstream> |
| 23 | |
| 24 | String::String() |
| 25 | { |
| 26 | p = new srep; |
| 27 | len = 0; |
| 28 | p->s = 0; |
| 29 | } |
| 30 | |
| 31 | String::String(const char *s) |
| 32 | { |
| 33 | p = new srep; |
| 34 | len = strlen(s); |
| 35 | p->s = new char[len + 1]; |
| 36 | std::strcpy(p->s, s); |
| 37 | } |
| 38 | |
| 39 | String::String(const std::string & s) |
| 40 | { |
| 41 | p = new srep; |
| 42 | len = s.length (); |
| 43 | p->s = new char[len + 1]; |
| 44 | std::strcpy (p->s, s.c_str ()); |
| 45 | } |
| 46 | |
| 47 | String::String(const String & s) |
| 48 | { |
| 49 | s.p->n++; |
| 50 | p = s.p; |
| 51 | len = s.len; |
| 52 | } |
| 53 | |
| 54 | String::String(long i) |
| 55 | { |
| 56 | std::ostringstream temp; |
| 57 | temp << i; |
| 58 | |
| 59 | p = new srep; |
| 60 | len = strlen(temp.str().c_str ()); |
| 61 | p->s = new char[len + 1]; |
| 62 | strcpy(p->s, temp.str().c_str ()); |
| 63 | } |
| 64 | |
| 65 | String::String(char c) |
| 66 | { |
| 67 | p = new srep; |
| 68 | p->s = new char[2]; |
| 69 | p->s[0] = c; |
| 70 | p->s[1] = '\0'; |
| 71 | len = 1; |
| 72 | } |
| 73 | |
| 74 | String::~String() |
| 75 | { |
| 76 | if (--p->n == 0) { |
| 77 | delete[] p->s; |
| 78 | delete p; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | String & |
| 83 | String::operator=(const char *s) |
| 84 | { |
| 85 | if (p->n > 1) { |
| 86 | p->n--; |
| 87 | p = new srep; |
| 88 | } |
| 89 | else |
| 90 | delete[] p->s; |
| 91 | |
| 92 | len = strlen(s); |
| 93 | p->s = new char[len + 1]; |
| 94 | strcpy(p->s, s); |
| 95 | |
| 96 | return *this; |
| 97 | } |
| 98 | |
| 99 | String & |
| 100 | String::operator=(const String & s) |
| 101 | { |
| 102 | s.p->n++; // protection contre st = st |
| 103 | if (--p->n == 0) { |
| 104 | delete[] p->s; |
| 105 | delete p; |
| 106 | } |
| 107 | p = s.p; |
| 108 | len = s.len; |
| 109 | return *this; |
| 110 | } |
| 111 | |
| 112 | String & |
| 113 | String::operator=(const std::string & s) |
| 114 | { |
| 115 | if (p->n > 1) { |
| 116 | p->n--; |
| 117 | p = new srep; |
| 118 | } |
| 119 | else |
| 120 | delete[] p->s; |
| 121 | |
| 122 | len = s.length (); |
| 123 | p->s = new char[len + 1]; |
| 124 | strcpy(p->s, s.c_str ()); |
| 125 | |
| 126 | return *this; |
| 127 | } |
| 128 | |
| 129 | int |
| 130 | String::length() const |
| 131 | { |
| 132 | return len; |
| 133 | } |
| 134 | |
| 135 | int |
| 136 | String::find(char c) |
| 137 | { |
| 138 | if (!strchr(p->s, c)) |
| 139 | return -1; |
| 140 | |
| 141 | return (int)(strchr(p->s, c) - p->s); |
| 142 | } |
| 143 | |
| 144 | void |
| 145 | String::fill(char c) |
| 146 | { |
| 147 | for (char * s = p->s; *s; s++) |
| 148 | *s = c; |
| 149 | } |
| 150 | |
| 151 | String |
| 152 | String::pad(int n) |
| 153 | { |
| 154 | int l = len; |
| 155 | |
| 156 | if (n <= l) |
| 157 | return subString(0, n-1); |
| 158 | |
| 159 | char *temp = new char[n+1]; |
| 160 | strcpy(temp, p->s); |
| 161 | |
| 162 | for (int i = l; i < n; i++) |
| 163 | temp[i] = ' '; |
| 164 | temp[n] = '\0'; |
| 165 | |
| 166 | String res(temp); |
| 167 | delete temp; |
| 168 | |
| 169 | return res; |
| 170 | } |
| 171 | |
| 172 | String |
| 173 | String::subString(int debut, int fin) |
| 174 | { |
| 175 | if (fin < debut) return ""; |
| 176 | |
| 177 | char * temp = new char[fin-debut+2]; |
| 178 | strncpy(temp, p->s + debut, fin - debut + 1); |
| 179 | temp[fin - debut + 1] = '\0'; |
| 180 | String res(temp); |
| 181 | delete temp; |
| 182 | return res; |
| 183 | } |
| 184 | |
| 185 | String |
| 186 | String::subString(int debut) |
| 187 | { |
| 188 | return subString(debut, len - 1); |
| 189 | } |
| 190 | |
| 191 | String |
| 192 | String::toLower() |
| 193 | { |
| 194 | char *temp = new char[len + 1]; |
| 195 | |
| 196 | for (int i = 0; i < len + 1; i++) |
| 197 | if (isupper(p->s[i])) |
| 198 | temp[i] = tolower(p->s[i]); |
| 199 | else |
| 200 | temp[i] = p->s[i]; |
| 201 | |
| 202 | String res(temp); |
| 203 | delete temp; |
| 204 | return res; |
| 205 | } |
| 206 | |
| 207 | String |
| 208 | String::toUpper() |
| 209 | { |
| 210 | char *temp = new char[len + 1]; |
| 211 | |
| 212 | for (int i = 0; i < len + 1; i++) |
| 213 | if (islower(p->s[i])) |
| 214 | temp[i] = toupper(p->s[i]); |
| 215 | else |
| 216 | temp[i] = p->s[i]; |
| 217 | |
| 218 | String res(temp); |
| 219 | delete temp; |
| 220 | return res; |
| 221 | } |
| 222 | |
| 223 | String |
| 224 | String::trim() |
| 225 | { |
| 226 | int i = 0, j = len - 1; |
| 227 | |
| 228 | while (i < j && (p->s[i] == ' ' || p->s[i] == '\t' || p->s[i] == '\r')) |
| 229 | i++; |
| 230 | |
| 231 | while (j > 0 && (p->s[j] == ' ' || p->s[j] == '\t' || p->s[i] == '\r')) |
| 232 | j--; |
| 233 | |
| 234 | return subString(i, j); |
| 235 | } |
| 236 | |
| 237 | int |
| 238 | String::indexOf(char c) |
| 239 | { |
| 240 | char *s = std::strchr(p->s, c); |
| 241 | if (s) |
| 242 | return p->s - s; |
| 243 | |
| 244 | return -1; |
| 245 | } |
| 246 | |
| 247 | char & |
| 248 | String::operator[](int i) |
| 249 | { |
| 250 | if (i < 0 || len < i) { |
| 251 | std::cerr << "String index out of range\n"; |
| 252 | std::exit(1); |
| 253 | } |
| 254 | return p->s[i]; |
| 255 | } |
| 256 | |
| 257 | const char & |
| 258 | String::operator[](int i) const |
| 259 | { |
| 260 | if (i < 0 || len < i) { |
| 261 | std::cerr << "String index out of range\n"; |
| 262 | exit(1); |
| 263 | } |
| 264 | return p->s[i]; |
| 265 | } |
| 266 | |
| 267 | bool |
| 268 | String::operator==(const char *s) const |
| 269 | { |
| 270 | return std::strcmp(p->s, s) == 0; |
| 271 | } |
| 272 | |
| 273 | bool |
| 274 | String::operator==(const String & s) const |
| 275 | { |
| 276 | return (p == s.p) || (std::strcmp(p->s, s.p->s) == 0); |
| 277 | } |
| 278 | |
| 279 | bool |
| 280 | String::operator==(const std::string & s) const |
| 281 | { |
| 282 | return (p->s == s.c_str ()) || (std::strcmp (p->s, s.c_str()) == 0); |
| 283 | } |
| 284 | |
| 285 | bool |
| 286 | String::operator!=(const char *s) const |
| 287 | { |
| 288 | return std::strcmp(p->s, s) != 0; |
| 289 | } |
| 290 | |
| 291 | bool |
| 292 | String::operator!=(const String & s) const |
| 293 | { |
| 294 | return std::strcmp(p->s, s.p->s) != 0; |
| 295 | } |
| 296 | |
| 297 | bool |
| 298 | String::operator!=(const std::string & s) const |
| 299 | { |
| 300 | return ! (*this == s); |
| 301 | } |
| 302 | |
| 303 | bool |
| 304 | String::operator<(const String & s) const |
| 305 | { |
| 306 | return std::strcmp(p->s, s.p->s) < 0; |
| 307 | } |
| 308 | |
| 309 | bool |
| 310 | String::operator<(const std::string & s) const |
| 311 | { |
| 312 | return std::strcmp(p->s, s.c_str ()) < 0; |
| 313 | } |
| 314 | |
| 315 | bool |
| 316 | String::operator>(const String & s) const |
| 317 | { |
| 318 | return std::strcmp(p->s, s.p->s) > 0; |
| 319 | } |
| 320 | |
| 321 | bool |
| 322 | String::operator<=(const String & s) const |
| 323 | { |
| 324 | return std::strcmp(p->s, s.p->s) <= 0; |
| 325 | } |
| 326 | |
| 327 | bool |
| 328 | String::operator<=(const std::string & s) const |
| 329 | { |
| 330 | return (*this < s) || (*this == s); |
| 331 | } |
| 332 | |
| 333 | bool |
| 334 | String::operator>=(const String & s) const |
| 335 | { |
| 336 | return std::strcmp(p->s, s.p->s) >= 0; |
| 337 | } |
| 338 | |
| 339 | bool String::operator>=(const std::string & s) const |
| 340 | { |
| 341 | return ! (*this < s); |
| 342 | } |
| 343 | |
| 344 | String |
| 345 | String::operator+(const char *s) |
| 346 | { |
| 347 | char *temp = new char[len + std::strlen(s) + 1]; |
| 348 | |
| 349 | std::strcpy(temp, p->s); |
| 350 | std::strcat(temp, s); |
| 351 | |
| 352 | String res(temp); |
| 353 | delete temp; |
| 354 | |
| 355 | return res; |
| 356 | } |
| 357 | |
| 358 | String |
| 359 | String::operator+(const String & s) |
| 360 | { |
| 361 | char * temp = new char[len + s.len + 1]; |
| 362 | |
| 363 | std::strcpy(temp, p->s); |
| 364 | std::strcat(temp, s.p->s); |
| 365 | |
| 366 | String res(temp); |
| 367 | delete temp; |
| 368 | |
| 369 | return res; |
| 370 | } |
| 371 | |
| 372 | String |
| 373 | String::operator+(const std::string & s) |
| 374 | { |
| 375 | char * temp = new char[len + s.length () + 1]; |
| 376 | std::strcpy (temp, p->s); |
| 377 | std::strcat (temp, s.c_str ()); |
| 378 | |
| 379 | String res (temp); |
| 380 | delete temp; |
| 381 | |
| 382 | return res; |
| 383 | } |
| 384 | |
| 385 | String::operator const char *() const |
| 386 | { |
| 387 | return p->s; |
| 388 | } |
| 389 | |
| 390 | String::operator std::string () const |
| 391 | { |
| 392 | return std::string (p->s); |
| 393 | } |
| 394 | |
| 395 | std::ostream & |
| 396 | operator<<(std::ostream & s, const String & st) |
| 397 | { |
| 398 | return s << st.p->s; |
| 399 | } |
| 400 | |
| 401 | std::istream & |
| 402 | operator>>(std::istream & s, String & st) |
| 403 | { |
| 404 | if (st.p->n > 1) { |
| 405 | st.p->n--; |
| 406 | st.p = new String::srep; |
| 407 | } |
| 408 | else |
| 409 | delete[] st.p->s; |
| 410 | |
| 411 | char buf[2048]; |
| 412 | char c; |
| 413 | |
| 414 | s.getline (buf, 2048, '\n'); |
| 415 | //s.get(c); |
| 416 | |
| 417 | st.len = strlen(buf); |
| 418 | st.p->s = new char[st.len + 1]; |
| 419 | strcpy(st.p->s, buf); |
| 420 | |
| 421 | return s; |
| 422 | } |
| 423 | |
| 424 | std::string operator+(const std::string & s, const String & p) |
| 425 | { |
| 426 | std::string temp = s; |
| 427 | temp += p.p->s; |
| 428 | return temp; |
| 429 | } |
| 430 | |
| 431 | bool operator==(const std::string & s, const String & p) |
| 432 | { |
| 433 | return p == s; |
| 434 | } |
| 435 | |
| 436 | bool operator!=(const std::string & s, const String & p) |
| 437 | { |
| 438 | return p != s; |
| 439 | } |
| 440 | |
| 441 | bool operator>(const std::string & s, const String & p) |
| 442 | { |
| 443 | return p <= s; |
| 444 | } |
| 445 | |
| 446 | bool operator<(const std::string & s, const String & p) |
| 447 | { |
| 448 | return p >= s; |
| 449 | } |
| 450 | |
| 451 | bool operator<=(const std::string & s, const String & p) |
| 452 | { |
| 453 | return p > s; |
| 454 | } |
| 455 | |
| 456 | bool operator>=(const std::string & s, const String & p) |
| 457 | { |
| 458 | return p < s; |
| 459 | } |