argsplit_buf.c

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#include "common/argsplit.h"
 
const char** argsplit_buf(void* buf, uint64_t size, const char* str, uint64_t maxLen, uint64_t* count)
{
    uint64_t skipped = 0;
    while (isspace(*str) && (maxLen == 0 || skipped < maxLen))
    {
        str++;
        skipped++;
    }
    maxLen = (maxLen == 0) ? 0 : (maxLen > skipped ? maxLen - skipped : 0);
 
    uint64_t argc;
    uint64_t totalChars;
    if (_argsplit_count_chars_and_args(str, &argc, &totalChars, maxLen) == UINT64_MAX)
    {
        return NULL;
    }
 
    uint64_t argvSize = sizeof(char*) * (argc + 1);
    uint64_t stringsSize = totalChars + argc;
 
    const char** argv = buf;
    if (size < argvSize + stringsSize)
    {
        return NULL;
    }
    if (count != NULL)
    {
        *count = argc;
    }
    if (argc == 0)
    {
        argv[0] = NULL;
        return argv;
    }
 
    return _argsplit_backend(buf, str, argc, maxLen);
}