/
| 35 | |
| 36 | /*****************************************************************************/ |
| 37 | static char *path_append(char *buf, const char *app, size_t *buf_size) { |
| 38 | /****************************************************************************** |
| 39 | Helper for proj_info() below. Append app to buf, separated by a |
| 40 | semicolon. Also handle allocation of longer buffer if needed. |
| 41 | |
| 42 | Returns buffer and adjusts *buf_size through provided pointer arg. |
| 43 | ******************************************************************************/ |
| 44 | char *p; |
| 45 | size_t len, applen = 0, buflen = 0; |
| 46 | #ifdef _WIN32 |
| 47 | const char *delim = ";"; |
| 48 | #else |
| 49 | const char *delim = ":"; |
| 50 | #endif |
| 51 | |
| 52 | /* Nothing to do? */ |
| 53 | if (nullptr == app) |
| 54 | return buf; |
| 55 | applen = strlen(app); |
| 56 | if (0 == applen) |
| 57 | return buf; |
| 58 | |
| 59 | /* Start checking whether buf is long enough */ |
| 60 | if (nullptr != buf) |
| 61 | buflen = strlen(buf); |
| 62 | len = buflen + applen + strlen(delim) + 1; |
| 63 | |
| 64 | /* "pj_realloc", so to speak */ |
| 65 | if (*buf_size < len) { |
| 66 | p = static_cast<char *>(calloc(2 * len, sizeof(char))); |
| 67 | if (nullptr == p) { |
| 68 | free(buf); |
| 69 | return nullptr; |
| 70 | } |
| 71 | *buf_size = 2 * len; |
| 72 | if (buf != nullptr) |
| 73 | strcpy(p, buf); |
| 74 | free(buf); |
| 75 | buf = p; |
| 76 | } |
| 77 | assert(buf); |
| 78 | |
| 79 | /* Only append a delimiter if something's already there */ |
| 80 | if (0 != buflen) |
| 81 | strcat(buf, delim); |
| 82 | strcat(buf, app); |
| 83 | return buf; |
| 84 | } |
| 85 | |
| 86 | static const char *empty = {""}; |
| 87 | static char version[64] = {""}; |