I would like to know how can I read the charaters into a buffer in Python? In C code, I can easy decralare the buffer character like char buffer[256];:

void read_char(int x, char buffer[], int *flag_stop) {
int i, length;
char character;

i = 0;
bzero(buffer, 256);

do {
    if ((length = read(x, &character, 1)) <= 0) 
    {
        *flag_stop = 1;
        break;
    }
    buffer[i] = character;
    i  ;
}
while(c != 0x0A);

}

But I don't know how to do in Python so the code is something like this:

def read_char(x,buffer,**flag_stop):
i = 0  
buffer = np.array([], dtype='S64')  
while True:  
    if os.read(x, character, 1) <= 0: 
        **flag_stop == 1
        break
    buffer[i] = str(character)
    i=i 1
    if(character != 0x0A):  
        break

I have tried with numpy.chararray but I did not work. Any idea for this problem? thank you very much!

CodePudding user response：

Your main problem is that you want in Python write code exactly like in C.

Python would need something like this

def read_char(x):
    flag_stop = False  # or 0
    i = 0
    buffer = np.array([], dtype='S64')
    
    while True:
        character = os.read(x, 1)
        if not character:   # if len(character) < 0
            flag_stop = True # or 1
            break
        buffer[i] = character
        i  = 1
        if character != 0x0A:  
           break

    return buffer, flag_stop

# ---

buffer, flag_stop = read_char(file_handler)

I don't like str() in your code - you may get single byte which is part of mulit-bytes code (like utf-8) and converting to str() can only mess it.