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truncate_cpy
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| // .h file | |
| // Similar to strncpy but with safe zero-termination behavior | |
| // and doesn't fill extra space with zeroes. | |
| // Returns true if the string fit without truncation. | |
| // Always performs the copy though. | |
| bool truncate_cpy(char *dest, size_t destSize, const char *src); | |
| template<size_t Count> | |
| inline bool truncate_cpy(char(&out)[Count], const char *src) { | |
| return truncate_cpy(out, Count, src); | |
| } | |
| // .cpp file | |
| bool truncate_cpy(char *dest, size_t destSize, const char *src) { | |
| assert(destSize >= 1); | |
| size_t len = strlen(src); | |
| if (len >= destSize - 1) { | |
| memcpy(dest, src, destSize - 1); | |
| dest[destSize - 1] = '\0'; | |
| return false; | |
| } else { | |
| memcpy(dest, src, len); | |
| dest[len] = '\0'; | |
| return true; | |
| } | |
| } |
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