Assembler read full numbers from txt file - file

Question

I am stuck at point where I need to read 3 numbers from created buffer of text file. I've tryed reading every byte, but no luck if the number is bigger than 9.
Steps that I do:
Open text file
Read file's content into created buffer
Put every buffers byte into different register (ax, bx, cx, dx).
The problem is, it reads 1 byte (mov ax, buffer[0]) at a time: if my text file is (10 10 1), it reads 1 then 0 then space symbol(ascii 20) and so on. Should I do cycle that converts and adds every byte to one register while it doesn't detect space symbol? Or is there a possibility to read whole number at one time? Here's the code:
.model small
bufferLen equ 16
.stack 100h
.data
duom db "duom.txt", 0
fident dw 0
buffer db bufferLen dup (?)
.code
start:
mov dx, #data
mov ds, dx
mov bx, 81h
tikrinam: ; not important
mov ax, es:[bx]
inc bx
cmp al, 13
je openf
cmp al, 20h
je tikrinam
cmp ax, "?/"
jne openf
mov ax, es:[bx]
cmp ah, 13
je abouthlp
jmp openf
abouthlp:
mov dx, offset about
mov ah, 09h
int 21h
jmp ending
openf:
mov ah, 3Dh
mov al, 0
mov dx, offset duom
int 21h
mov [fident], ax
readf:
mov ah, 3Fh
mov bx, [fident]
mov cx, bufferLen
mov dx, offset buffer
int 21h
mov al, buffer[0]
mov bl, buffer[1]
mov cl, buffer[2]

Answer 1

I've found the solution if anyone is having same problem:
changeNumbers:
push ax
mov ax, 0
cmp cl, 0
je change
temp1:
mov ch, 0
mov cl, buffer[si]
inc si
cmp cl, 32
je changeNumbers
cmp cl, 0
je changeNumbers
sub cl, 48
mul abc
add ax, cx
jmp temp1
Basically what I did was read every byte and if the number is >9 then add cx to ax and multiply it by 10. Then just push it to stack for further usage. Brain is an amazing thing, I'd say.