80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 2008 Bernhard Fischer
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*
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* Licensed under GPLv2 or later, see file License in this tarball for details.
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*/
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#include "libbb.h"
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/*
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* The strrstr() function finds the last occurrence of the substring needle
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* in the string haystack. The terminating nul characters are not compared.
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*/
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char *strrstr(const char *haystack, const char *needle)
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{
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char *r = NULL;
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do {
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char *p = strstr(haystack, needle);
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if (p)
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r = p;
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} while (*haystack++);
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return r;
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}
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#ifdef __DO_STRRSTR_TEST
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/* Test */
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int main(int argc, char **argv)
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{
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int ret = 0;
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int n;
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char *tmp;
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ret |= !(n = ((tmp = strrstr("baaabaaab", "aaa")) != NULL && strcmp(tmp, "aaab") == 0));
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printf("'baaabaaab' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = ((tmp = strrstr("baaabaaaab", "aaa")) != NULL && strcmp(tmp, "aaab") == 0));
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printf("'baaabaaaab' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = ((tmp = strrstr("baaabaab", "aaa")) != NULL && strcmp(tmp, "aaabaab") == 0));
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printf("'baaabaab' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr("aaa", "aaa") != NULL));
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printf("'aaa' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr("aaa", "a") != NULL));
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printf("'aaa' vs. 'a' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr("aaa", "bbb") == NULL));
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printf("'aaa' vs. 'bbb' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr("a", "aaa") == NULL));
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printf("'a' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = ((tmp = strrstr("aaa", "")) != NULL && strcmp(tmp, "aaa") == 0));
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printf("'aaa' vs. '' : %s\n", n ? "FAILED" : "PASSED");
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ret |= !(n = (strrstr("", "aaa") == NULL));
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printf("'' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = ((tmp = strrstr("", "")) != NULL && strcmp(tmp, "") == 0));
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printf("'' vs. '' : %s\n", n ? "PASSED" : "FAILED");
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/*ret |= !(n = (strrstr(NULL, NULL) == NULL));
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printf("'NULL' vs. 'NULL' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr("", NULL) == NULL));
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printf("'' vs. 'NULL' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr(NULL, "") == NULL));
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printf("'NULL' vs. '' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr("aaa", NULL) == NULL));
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printf("'aaa' vs. 'NULL' : %s\n", n ? "PASSED" : "FAILED");
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ret |= !(n = (strrstr(NULL, "aaa") == NULL));
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printf("'NULL' vs. 'aaa' : %s\n", n ? "PASSED" : "FAILED");*/
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return ret;
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}
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#endif
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