Mercurial > trustbridge
comparison common/strhelp.c @ 143:b026e6d2a161
Make flawfinder (a bit more) happy.
| author | Sascha Wilde <wilde@intevation.de> |
|---|---|
| date | Mon, 24 Mar 2014 16:09:47 +0100 |
| parents | 5fa4791d6d0e |
| children | bf4bfd8843bd |
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| 136:5fa4791d6d0e | 143:b026e6d2a161 |
|---|---|
| 2 #include <stdbool.h> | 2 #include <stdbool.h> |
| 3 #include <stdio.h> | 3 #include <stdio.h> |
| 4 #include <stdlib.h> | 4 #include <stdlib.h> |
| 5 #include <string.h> | 5 #include <string.h> |
| 6 #include <assert.h> | 6 #include <assert.h> |
| 7 | |
| 8 /* Remarks regarding the "Flawfinder: ignore" comments in this file: | |
| 9 * | |
| 10 * - strlen: | |
| 11 * | |
| 12 * It's true that strlen might crash if input is not null | |
| 13 * terminated. But by design there is not safe way to get the | |
| 14 * length of an string in C, and defining an additional length | |
| 15 * parameter for string parameter will only transfere the problem to | |
| 16 * the caller. | |
| 17 */ | |
| 7 | 18 |
| 8 static void | 19 static void |
| 9 out_of_core(void) | 20 out_of_core(void) |
| 10 { | 21 { |
| 11 fputs("\nfatal: out of memory\n", stderr); | 22 fputs("\nfatal: out of memory\n", stderr); |
| 105 } | 116 } |
| 106 | 117 |
| 107 bool | 118 bool |
| 108 str_equal (char *s1, char *s2) | 119 str_equal (char *s1, char *s2) |
| 109 { | 120 { |
| 110 size_t l1 = strlen(s1); | 121 size_t l1 = strlen(s1); /* Flawfinder: ignore */ |
| 111 size_t l2 = strlen(s2); | 122 size_t l2 = strlen(s2); /* Flawfinder: ignore */ |
| 112 if ((l1 == l2) && | 123 if ((l1 == l2) && |
| 113 (strcmp(s1, s2) == 0)) | 124 (strcmp(s1, s2) == 0)) |
| 114 return true; | 125 return true; |
| 115 else | 126 else |
| 116 return false; | 127 return false; |
| 117 } | 128 } |
| 118 | 129 |
| 119 bool | 130 bool |
| 120 str_starts_with (char *s1, char *s2) | 131 str_starts_with (char *s1, char *s2) |
| 121 { | 132 { |
| 122 if (strncmp(s1, s2, strlen(s2)) == 0) | 133 size_t l2 = strlen(s2); /* Flawfinder: ignore */ |
| 134 if (strncmp(s1, s2, l2) == 0) | |
| 123 return true; | 135 return true; |
| 124 else | 136 else |
| 125 return false; | 137 return false; |
| 126 } | 138 } |
| 127 | 139 |
| 131 size_t i; | 143 size_t i; |
| 132 if (*s != NULL) | 144 if (*s != NULL) |
| 133 { | 145 { |
| 134 while (isspace(**s)) | 146 while (isspace(**s)) |
| 135 (*s)++; | 147 (*s)++; |
| 136 i = strlen(*s); | 148 i = strlen(*s); /* Flawfinder: ignore */ |
| 137 while (isspace((*s)[--i])) | 149 while (isspace((*s)[--i])) |
| 138 (*s)[i] = '\0'; | 150 (*s)[i] = '\0'; |
| 139 } | 151 } |
| 140 } | 152 } |