1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 2009-2010,2011 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Thomas E. Dickey * 32 ****************************************************************************/ 33 #include <progs.priv.h> 34 #include <string.h> 35 36 #include <transform.h> 37 38 MODULE_ID("$Id: transform.c,v 1.4 2020/02/02 23:34:34 tom Exp $") 39 40 #ifdef SUFFIX_IGNORED 41 static void 42 trim_suffix(const char *a, size_t *len) 43 { 44 const char ignore[] = SUFFIX_IGNORED; 45 46 if (sizeof(ignore) != 0) { 47 bool trim = FALSE; 48 size_t need = (sizeof(ignore) - 1); 49 50 if (*len > need) { 51 size_t first = *len - need; 52 size_t n; 53 trim = TRUE; 54 for (n = first; n < *len; ++n) { 55 if (tolower(UChar(a[n])) != tolower(UChar(ignore[n - first]))) { 56 trim = FALSE; 57 break; 58 } 59 } 60 if (trim) { 61 *len -= need; 62 } 63 } 64 } 65 } 66 #else 67 #define trim_suffix(a, len) /* nothing */ 68 #endif 69 70 bool 71 same_program(const char *a, const char *b) 72 { 73 size_t len_a = strlen(a); 74 size_t len_b = strlen(b); 75 76 trim_suffix(a, &len_a); 77 trim_suffix(b, &len_b); 78 79 return (len_a == len_b) && (strncmp(a, b, len_a) == 0); 80 } 81