Function UTIL_createExpandedFNT

freebsd/contrib/zstd/programs/util.c:956–1000

}

FileNamesTable*
UTIL_createExpandedFNT(const char** inputNames, size_t nbIfns, int followLinks)
{
    unsigned nbFiles;
    char* buf = (char*)malloc(LIST_SIZE_INCREASE);
    char* bufend = buf + LIST_SIZE_INCREASE;

    if (!buf) return NULL;

    {   size_t ifnNb, pos;
        for (ifnNb=0, pos=0, nbFiles=0; ifnNb<nbIfns; ifnNb++) {
            if (!UTIL_isDirectory(inputNames[ifnNb])) {
                size_t const len = strlen(inputNames[ifnNb]);
                if (buf + pos + len >= bufend) {
                    ptrdiff_t newListSize = (bufend - buf) + LIST_SIZE_INCREASE;
                    assert(newListSize >= 0);
                    buf = (char*)UTIL_realloc(buf, (size_t)newListSize);
                    if (!buf) return NULL;
                    bufend = buf + newListSize;
                }
                if (buf + pos + len < bufend) {
                    memcpy(buf+pos, inputNames[ifnNb], len+1);  /* including final \0 */
                    pos += len + 1;
                    nbFiles++;
                }
            } else {
                nbFiles += (unsigned)UTIL_prepareFileList(inputNames[ifnNb], &buf, &pos, &bufend, followLinks);
                if (buf == NULL) return NULL;
    }   }   }

    /* note : even if nbFiles==0, function returns a valid, though empty, FileNamesTable* object */

    {   size_t ifnNb, pos;
        size_t const fntCapacity = nbFiles + 1;  /* minimum 1, allows adding one reference, typically stdin */
        const char** const fileNamesTable = (const char**)malloc(fntCapacity * sizeof(*fileNamesTable));
        if (!fileNamesTable) { free(buf); return NULL; }

        for (ifnNb = 0, pos = 0; ifnNb < nbFiles; ifnNb++) {
            fileNamesTable[ifnNb] = buf + pos;
            if (buf + pos > bufend) { free(buf); free((void*)fileNamesTable); return NULL; }
            pos += strlen(fileNamesTable[ifnNb]) + 1;
        }
        return UTIL_assembleFileNamesTable2(fileNamesTable, nbFiles, fntCapacity, buf);
    }
}


void UTIL_expandFNT(FileNamesTable** fnt, int followLinks)