-
-
[原创]字符串_常用操作函数与数值之间相关函数_重写练习之CPP源码!!!
-
2021-11-29 21:31 16187
-
早期学习C的时候写的练手代码,
但是那会写的都是中文变量名称,
现在要练习写英文的,拿他复习
顺便练手改英文名称
有些想去职业圈玩了,一个人玩太无聊了.
头文件:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | typedef long long llong;class demo_hys{public: static size_t str_len(char* str); static size_t str_len(wchar_t* str); static char* str_reverse(char* str); static wchar_t* str_reverse(wchar_t* str); static int ctoi(char* c); static int ctoi(wchar_t* c); static wchar_t itoc(size_t num); static intptr_t strtohex(char* str); static intptr_t strtohex(wchar_t* str); static intptr_t hextoint(char* str); static intptr_t hextoint(wchar_t* str); static llong hextolong(char* str); static llong hextolong(wchar_t* str); static char* inttohex(intptr_t num, char* phex); static wchar_t* inttohex(intptr_t num, wchar_t* phex); static char* longtohex(llong num, char* phex); static wchar_t* longtohex(llong num, wchar_t* phex); static size_t str_getnumlenth(char* str); static size_t str_getnumlenth(wchar_t* str); static size_t inttostr(intptr_t num, char* pstr); static size_t inttostr(intptr_t num, wchar_t* pstr); static size_t longtostr(llong num, char* pstr); static size_t longtostr(llong num, wchar_t* pstr); static intptr_t strtoint(char* str); static intptr_t strtoint(wchar_t* str); static llong strtolong(char* str); static llong strtolong(wchar_t* str); static double strtodouble(char* str); static double strtodouble(wchar_t* str); static char* str_delspace(char* str); static wchar_t* str_delspace(wchar_t* str); static char* str_toupper(char* 文本); static wchar_t* str_toupper(wchar_t* 文本); static char* str_tolower(char* 文本); static wchar_t* str_tolower(wchar_t* 文本); static void str_sub(char* str, size_t start, size_t len, char* outstr, bool endzero = false); static void str_sub(wchar_t* str, size_t start, size_t len, wchar_t* outstr, bool endzero = false); static bool str_cmp(char* str1, char* str2); static bool str_cmp(wchar_t* str1, wchar_t* str2); static size_t str_replace(char* str, char* find, char* rep, char* outstr, intptr_t count = -1); static size_t str_replace(wchar_t* str, wchar_t* find, wchar_t* rep, wchar_t* outstr, intptr_t count = -1); static intptr_t str_find(char* str, char* find); static intptr_t str_find(wchar_t* str, wchar_t* find); static intptr_t str_rfind(char* str, char* rfind); static intptr_t str_rfind(wchar_t* str, wchar_t* rfind); static char* str_copy(char* str, char* copy, bool endzero = false); static wchar_t* str_copy(wchar_t* str, wchar_t* copy, bool endzero = false); static bool hexcmp(char* hex1, char* hex2, size_t count); static intptr_t hexfind(char* hex, size_t hexlen, char* find, size_t findlen); static intptr_t hexrfind(char* hex, size_t hexlen, char* find, size_t findlen);}; |
实现源码如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////#define NULL 0///////////////////////////////////////////////////////////////////////////////////////////////////////////////////size_t demo_hys::str_len(char* str){ char* p = str; while (*p) { p++; } return p - str;}//---------------------------------------------------------------------------------------size_t demo_hys::str_len(wchar_t* str){ wchar_t* p = str; while (*p) { p++; } return p - str;}//---------------------------------------------------------------------------------------char* demo_hys::str_reverse(char* str){ size_t slen = str_len(str); char* p = str + slen; char tmp = NULL; while (--p > str) { tmp = *str; *str++ = *p; *p = tmp; } return str - slen / 2;}//---------------------------------------------------------------------------------------wchar_t* demo_hys::str_reverse(wchar_t* str){ size_t slen = str_len(str); wchar_t* p = str + slen; wchar_t tmp = NULL; while (--p > str) { tmp = *str; *str++ = *p; *p = tmp; } return str - slen / 2;}//---------------------------------------------------------------------------------------//把单个字符【0-9】和【a-f】转为数值_失败返回-1int demo_hys::ctoi(char* c){ //判断是否0-9的字符 if (*c <= '9') { if (*c >= '0') { return *c - '0'; } } //判断是否A-F的字符 else if (*c <= 'F') { if (*c >= 'A') { return *c - 'A' + 10; } } //判断是否a-f的字符 else if (*c <= 'f') { if (*c >= 'a') { return *c - 'a' + 10; } } //失败返回【-1】 return -1;}//---------------------------------------------------------------------------------------//把单个字符【0-9】和【a-f】转为数值_失败返回-1int demo_hys::ctoi(wchar_t* c){ //判断是否0-9的字符 if (*c <= L'9') { if (*c >= L'0') { return *c - L'0'; } } //判断是否A-F的字符 else if (*c <= L'F') { if (*c >= L'A') { return *c - L'A' + 10; } } //判断是否a-f的字符 else if (*c <= L'f') { if (*c >= L'a') { return *c - L'a' + 10; } } //失败返回【-1】 return -1;}//---------------------------------------------------------------------------------------//失败返回值【S】，成功返回一个字符【1-9】【A-F】wchar_t demo_hys::itoc(size_t num){ if (num <= 9) { return (wchar_t)((num + '0') & 0xff);//数字 } else if (num <= 15) { return (wchar_t)((num - 10 + 'A') & 0xff); //字符 } else { return L'S';//错误 }}//---------------------------------------------------------------------------------------//成功返回十六进制数值，失败返回【-1】intptr_t demo_hys::strtohex(char* str){ int tens = NULL, ones = NULL; tens = ctoi(str++); //十位数 ones = ctoi(str);//个位数 if (ones == -1 || tens == -1) { return -1; } return ones * 16 + tens;}//---------------------------------------------------------------------------------------//成功返回十六进制数值，失败返回【-1】intptr_t demo_hys::strtohex(wchar_t* 文本){ int tens = NULL, ones = NULL; tens = ctoi(文本++);//十位数 ones = ctoi(文本);//个位数 if (ones == -1 || tens == -1) { return -1; } return ones * 16 + tens;}//---------------------------------------------------------------------------------------intptr_t demo_hys::hextoint(char* str){ char pint[10] = { 0 }; intptr_t ilen = sizeof(intptr_t); intptr_t hexlen = str_len(str) / 2; if (hexlen < ilen) { ilen = hexlen; } while (ilen--) { pint[ilen] = (char)strtohex(str); str += 2; } return *(intptr_t*)pint;}//---------------------------------------------------------------------------------------intptr_t demo_hys::hextoint(wchar_t* str){ char pint[10] = { 0 }; intptr_t ilen = sizeof(intptr_t); intptr_t hexlen = str_len(str) / 2; if (hexlen < ilen) { ilen = hexlen; } while (ilen--) { pint[ilen] = (char)strtohex(str); str += 2; } return *(intptr_t*)pint;}//---------------------------------------------------------------------------------------llong demo_hys::hextolong(char* str){ char pint[22] = { 0 }; intptr_t longlen = sizeof(llong); intptr_t hexlen = str_len(str) / 2; if (hexlen < longlen) { longlen = hexlen; } while (longlen--) { pint[longlen] = (char)strtohex(str); str += 2; } return *(llong*)pint;}//---------------------------------------------------------------------------------------llong demo_hys::hextolong(wchar_t* str){ char pint[22] = { 0 }; intptr_t longlen = sizeof(llong); intptr_t hexlen = str_len(str) / 2; if (hexlen < longlen) { longlen = hexlen; } while (longlen--) { pint[longlen] = (char)strtohex(str); str += 2; } return *(llong*)pint;}//---------------------------------------------------------------------------------------//返回文本指针_可以忽略返回值_直接使用传进来的结果文本char* demo_hys::inttohex(intptr_t num, char* phex){ char* p = (char*)# size_t ilen = sizeof(intptr_t); phex += ilen * 2; char ichar[10] = { 0 }; *phex = NULL; while (ilen--) { ichar[0] = *p++; *--phex = (char)itoc(*(size_t*)ichar % 16); *--phex = (char)itoc(*(size_t*)ichar / 16); } return phex;}//---------------------------------------------------------------------------------------//返回文本指针_可以忽略返回值_直接使用传进来的结果文本wchar_t* demo_hys::inttohex(intptr_t num, wchar_t* phex){ char* p = (char*)# size_t ilen = sizeof(intptr_t); phex += ilen * 2; char ichar[10] = { 0 }; *phex = NULL; while (ilen--) { ichar[0] = *p++; *--phex = (char)itoc(*(size_t*)ichar % 16); *--phex = (char)itoc(*(size_t*)ichar / 16); } return phex;}//---------------------------------------------------------------------------------------//返回文本指针_可以忽略返回值_直接使用传进来的结果文本char* demo_hys::longtohex(llong num, char* phex){ char* p = (char*)# size_t ilen = sizeof(llong); phex += ilen * 2; char ichar[10] = { 0 }; *phex = NULL; while (ilen--) { ichar[0] = *p++; *--phex = (char)itoc(*(size_t*)ichar % 16); *--phex = (char)itoc(*(size_t*)ichar / 16); } return phex;}//---------------------------------------------------------------------------------------//返回文本指针_可以忽略返回值_直接使用传进来的结果文本wchar_t* demo_hys::longtohex(llong num, wchar_t* phex){ char* p = (char*)# size_t ilen = sizeof(llong); phex += ilen * 2; char ichar[10] = { 0 }; *phex = NULL; while (ilen--) { ichar[0] = *p++; *--phex = (char)itoc(*(size_t*)ichar % 16); *--phex = (char)itoc(*(size_t*)ichar / 16); } return phex;}//---------------------------------------------------------------------------------------//只取连续的【0-9】数字的长度size_t demo_hys::str_getnumlenth(char* str){ char* p = str; while (*p <= '9' && *p >= '0') { p++; } return p - str;}//---------------------------------------------------------------------------------------//只取连续的【0-9】数字的长度size_t demo_hys::str_getnumlenth(wchar_t* str){ wchar_t* p = str; while (*p <= L'9' && *p >= L'0') { p++; } return p - str;}//---------------------------------------------------------------------------------------//返回文本长度size_t demo_hys::inttostr(intptr_t num, char* pstr){ char* p = pstr; size_t flag = NULL;//负数标志位 if (!num) { *pstr++ = '0'; *pstr = NULL; return 1; } if (num < 0) { *p++ = '-'; num *= -1; pstr++; flag = 1; } while (num > 0) { *p++ = (char)itoc(num % 10); num /= 10; } *p = NULL; str_reverse(pstr); return p - pstr + flag;}//---------------------------------------------------------------------------------------//返回文本长度size_t demo_hys::inttostr(intptr_t num, wchar_t* pstr){ wchar_t* p = pstr; size_t flag = NULL;//负数 if (!num) { *pstr++ = L'0'; *pstr = NULL; return 1; } if (num < 0) { *p++ = L'-'; num *= -1; pstr++; flag = 1; } while (num > 0) { *p++ = itoc(num % 10); num /= 10; } *p = NULL; str_reverse(pstr); return p - pstr + flag;}//---------------------------------------------------------------------------------------//返回文本长度size_t demo_hys::longtostr(llong num, char* pstr){ char* p = pstr; size_t flag = NULL;//负数 if (!num) { *pstr++ = '0'; *pstr = NULL; return 1; } if (num < 0) { *p++ = '-'; num *= -1; pstr++; flag = 1; } while (num > 0) { *p++ = (char)itoc(num % 10); num /= 10; } *p = NULL; str_reverse(pstr); return p - pstr + flag;}//---------------------------------------------------------------------------------------//返回文本长度size_t demo_hys::longtostr(llong num, wchar_t* pstr){ wchar_t* p = pstr; size_t flag = NULL; if (!num) { *pstr++ = L'0'; *pstr = NULL; return 1; } if (num < 0) { *p++ = L'-'; num *= -1; pstr++; flag = 1; } while (num > 0) { *p++ = itoc(num % 10); num /= 10; } *p = NULL; str_reverse(pstr); return p - pstr + flag;}//---------------------------------------------------------------------------------------intptr_t demo_hys::strtoint(char* str){ intptr_t num = NULL; intptr_t bit = 1; intptr_t flag = 1;//正负数标志位 int i = NULL; if (*str == '-') { flag = -1; str++; } size_t len = str_getnumlenth(str); --str += len; while (len--) { i = ctoi(str--); if (i == -1) { break; } num += i * bit; bit *= 10; } return num * flag;}//---------------------------------------------------------------------------------------intptr_t demo_hys::strtoint(wchar_t* str){ intptr_t num = NULL; intptr_t bit = 1; intptr_t flag = 1;//正负数标志位 int i = NULL; if (*str == L'-') { flag = -1; str++; } size_t len = str_getnumlenth(str); --str += len; while (len--) { i = ctoi(str--); if (i == -1) { break; } num += i * bit; bit *= 10; } return num * flag;}//---------------------------------------------------------------------------------------llong demo_hys::strtolong(char* str){ llong num = NULL; llong bit = 1; llong flag = 1;//正负数标志位 int i = NULL; if (*str == '-') { flag = -1; str++; } size_t len = str_getnumlenth(str); --str += len; while (len--) { i = ctoi(str--); if (i == -1) { break; } num += i * bit; bit *= 10; } return num * flag;}//---------------------------------------------------------------------------------------llong demo_hys::strtolong(wchar_t* str){ llong num = NULL; llong bit = 1; llong flag = 1;//正负数标志位 int i = NULL; if (*str == L'-') { flag = -1; str++; } size_t len = str_getnumlenth(str); --str += len; while (len--) { i = ctoi(str--); if (i == -1) { break; } num += i * bit; bit *= 10; } return num * flag;}//---------------------------------------------------------------------------------------double demo_hys::strtodouble(char* str){ double num = NULL; double bit = 1; double flag = 1;//正负数标志 int i = NULL; if (*str == '-') { flag = -1; str++; } size_t len = str_getnumlenth(str); --str += len; char* p = str; //处理整数部分 while (len--) { i = ctoi(str--); if (i == -1) { break; } num += i * bit; bit *= 10; } //处理小数部分 if (*++p == '.') { len = str_getnumlenth(++p); bit = 10; while (len--) { i = ctoi(p++); if (i == -1) { break; } num += i / bit; bit *= 10; } } return num * flag;}//---------------------------------------------------------------------------------------double demo_hys::strtodouble(wchar_t* str){ double num = NULL; double bit = 1; double flag = 1;//正负数标志 int i = NULL; if (*str == L'-') { flag = -1; str++; } size_t len = str_getnumlenth(str); --str += len; wchar_t* p = str; //处理整数部分 while (len--) { i = ctoi(str--); if (i == -1) { break; } num += i * bit; bit *= 10; } //处理小数部分 if (*++p == '.') { len = str_getnumlenth(++p); bit = 10; while (len--) { i = ctoi(p++); if (i == -1) { break; } num += i / bit; bit *= 10; } } return num * flag;}//---------------------------------------------------------------------------------------//返回值是文本的指针，没有特殊使用无视返回值即可，传进来的文本空格已经被过滤了char* demo_hys::str_delspace(char* str){ char* p = str; char* ret = str; //字符串结尾为0，非0就继续 while (*p) { //空格0x20 全角空格0xa1【0xffffffa1】 制表符0x09 if (*p == ' ' || *p == (char)0xffffffa1 || *p == '\t') { p++; } else { *str++ = *p++; } } *str = 0; return ret;}//---------------------------------------------------------------------------------------//返回值是文本的指针，没有特殊使用无视返回值即可，传进来的文本空格已经被过滤了wchar_t* demo_hys::str_delspace(wchar_t* str){ wchar_t* p = str, * ret = str; //字符串结尾为0，非0就继续 while (*p) { //空格0x20 全角空格0x3000 制表符0x09 if (*p == L' ' || *p == 0x3000 || *p == L'\t') { p++; } else { *str++ = *p++; } } *str = 0; return ret;}//---------------------------------------------------------------------------------------//返回值是文本的指针，没有特殊使用无视返回值即可，传进来的文本字母已经转为大写char* demo_hys::str_toupper(char* str){ char* p = str; char con = 'a' - 'A'; //字符串结尾为0，非0就继续 while (*p) { if (*p <= 'z' && *p >= 'a') { *p++ = *p - con; } p++; } return str;}//---------------------------------------------------------------------------------------//返回值是文本的指针，没有特殊使用无视返回值即可，传进来的文本字母已经转为大写wchar_t* demo_hys::str_toupper(wchar_t* str){ wchar_t* p = str; wchar_t con = 'a' - 'A'; //字符串结尾为0，非0就继续 while (*p) { if (*p <= L'z' && *p >= L'a') { *p++ = *p - con; } p++; } return str;}//---------------------------------------------------------------------------------------//返回值是文本的指针，没有特殊使用无视返回值即可，传进来的文本字母已经转为小写char* demo_hys::str_tolower(char* str){ char* p = str; char con = 'a' - 'A'; //字符串结尾为0，非0就继续 while (*p) { if (*p <= 'Z' && *p >= 'A') { *p++ = *p + con; } p++; } return str;}//---------------------------------------------------------------------------------------//返回值是文本的指针，没有特殊使用无视返回值即可，传进来的文本字母已经转为小写wchar_t* demo_hys::str_tolower(wchar_t* str){ wchar_t* p = str; wchar_t con = 'a' - 'A'; //字符串结尾为0，非0就继续 while (*p) { if (*p <= L'Z' && *p >= L'A') { *p++ = *p + con; } p++; } return str;}//---------------------------------------------------------------------------------------//尾部清零是为了处理某没有初始化的变量，或者是保存文本_本身有数据之类的情况void demo_hys::str_sub(char* str, size_t start, size_t len, char* outstr, bool endzero){ str += start; for (size_t i = 0; i < len; i++) { *outstr++ = *str; } if (endzero) { *outstr = NULL; }}//---------------------------------------------------------------------------------------//【尾部清零】是为了处理某没有初始化的变量，或者是保存文本_本身有数据之类的情况void demo_hys::str_sub(wchar_t* str, size_t start, size_t len, wchar_t* outstr, bool endzero){ str += start; for (size_t i = 0; i < len; i++) { *outstr++ = *str; } if (endzero) { *outstr = NULL; }}//---------------------------------------------------------------------------------------//一样返回真，不一样返回假bool demo_hys::str_cmp(char* str1, char* str2){ while (*str1 && *str2) { if (*str1++ != *str2++) { return false; } } return true;}//---------------------------------------------------------------------------------------//一样返回真，不一样返回假bool demo_hys::str_cmp(wchar_t* str1, wchar_t* str2){ while (*str1 && *str2) { if (*str1++ != *str2++) { return false; } } return true;}//---------------------------------------------------------------------------------------//返回文本长度_替换次数默认无限size_t demo_hys::str_replace(char* str, char* find, char* rep, char* outstr, intptr_t count){ size_t len = NULL; size_t findlen = str_len(find); while (*str) { //比较文本是否一样，真就代表有需要查找的文本，所以我们需要替换 if (!count && str_cmp(str, find)) { while (*rep) { *outstr++ = *rep++; len++; } if (!count) { count--; } str += findlen; } //如果不一样就继续下一个 else { *outstr++ = *str++; len++; } } return len;}//---------------------------------------------------------------------------------------//返回文本长度_替换次数默认无限size_t demo_hys::str_replace(wchar_t* str, wchar_t* find, wchar_t* rep, wchar_t* outstr, intptr_t count){ size_t len = NULL; size_t findlen = str_len(find); while (*str) { //比较文本是否一样，真就代表有需要查找的文本，所以我们需要替换 if (!count && str_cmp(str, find)) { while (*rep) { *outstr++ = *rep++; len++; } if (!count) { count--; } str += findlen; } //如果不一样就继续下一个 else { *outstr++ = *str++; len++; } } return len;}//---------------------------------------------------------------------------------------//返回要查找的文本第一个字符所在位置_失败返回-1intptr_t demo_hys::str_find(char* str, char* find){ char* p = str; while (*p) { if (str_cmp(p++, find)) { return --p - str; } } return -1;}//---------------------------------------------------------------------------------------//返回要查找的文本第一个字符所在位置_失败返回-1intptr_t demo_hys::str_find(wchar_t* str, wchar_t* find){ wchar_t* p = str; while (*p) { if (str_cmp(p++, find)) { return --p - str; } } return -1;}//---------------------------------------------------------------------------------------//返回要查找的文本第一个字符所在位置_失败返回-1intptr_t demo_hys::str_rfind(char* str, char* rfind){ size_t len = str_len(str); size_t rfindlen = str_len(rfind); char* p = str + len - rfindlen; while (*p) { if (str_cmp(p--, rfind)) { return ++p - str; } } return -1;}//---------------------------------------------------------------------------------------//返回要查找的文本第一个字符所在位置_失败返回-1intptr_t demo_hys::str_rfind(wchar_t* str, wchar_t* rfind){ size_t len = str_len(str); size_t rfindlen = str_len(rfind); wchar_t* p = str + len - rfindlen; while (*p) { if (str_cmp(p--, rfind)) { return ++p - str; } } return -1;}//---------------------------------------------------------------------------------------//源文本为要写入拷贝文本的指针地址_返回源文本指针char* demo_hys::str_copy(char* str, char* copy, bool endzero){ char* p = str; while (*copy) { *str++ = *copy++; } if (endzero) { *str = NULL; } return p;}//---------------------------------------------------------------------------------------//源文本为要写入拷贝的指针地址_返回源指针wchar_t* demo_hys::str_copy(wchar_t* str, wchar_t* copy, bool endzero){ wchar_t* p = str; while (*copy) { *str++ = *copy++; } if (endzero) { *str = NULL; } return p;}//---------------------------------------------------------------------------------------//对比字节集，一样返回真，失败返回假_对比长度如果只有一个字节，就不要用这个对比了bool demo_hys::hexcmp(char* hex1, char* hex2, size_t count){ size_t loop = 1; //对比第一个和最后一个字节是否一致 if (*hex1 != *hex2 || *(hex1++ + --count) != *(hex2++ + count--)) { return false; } //先双数后单数循环对比match: for (size_t i = loop; i < count; i += 2) { if (*(hex1 + i) != *(hex2 + i)) { return false; } } if (loop) { loop = 0; goto match; } return true;}//---------------------------------------------------------------------------------------//成功返回查找字节集第一个字节的位置，失败返回-1intptr_t demo_hys::hexfind(char* hex, size_t hexlen, char* find, size_t findlen){ char* p = hex; if (findlen == 1) { while (hexlen--) { if (*p++ == *find) { return --p - hex; } } } else { while (hexlen-- >= findlen) { if (hexcmp(p++, find, findlen)) { return --p - hex; } } } return -1;}//---------------------------------------------------------------------------------------//成功返回查找字节集第一个字节的位置，失败返回-1intptr_t demo_hys::hexrfind(char* hex, size_t hexlen, char* find, size_t findlen){ char* p = hex + hexlen - findlen; while (hexlen-- >= findlen) { if (hexcmp(p--, find, findlen)) { return ++p - hex; } } return -1;}//---------------------------------------------------------------------------------------//---------------------------------------------------------------------------------------//--------------------------------------------------------------------------------------- |
赞赏
他的文章
