First: This code in assembly can't open the file which I enter it's name
Second: I don't know how to merge this code to my code which I use it to open file
TITLE Reading a File (ReadFile.asm)
; Opens, reads, and displays a text file using
; procedures from Irvine32.lib.
INCLUDE Irvine32.inc
INCLUDE macros.inc
BUFFER_SIZE = 5000
.data
buffer BYTE BUFFER_SIZE DUP(?)
filename BYTE 80 DUP(0)
fileHandle HANDLE ?
.code
main PROC
; Let user input a filename.
mWrite "Enter an input filename: "
mov edx,OFFSET filename
mov ecx,SIZEOF filename
call ReadString
; Open the file for input.
mov edx,OFFSET filename
call OpenInputFile
mov fileHandle,eax
; Check for errors.
cmp eax,INVALID_HANDLE_VALUE ; error opening file?
jne file_ok ; no: skip
mWrite <"Cannot open file",0dh,0ah>
jmp quit ; and quit
file_ok:
; Read the file into a buffer.
mov edx,OFFSET buffer
mov ecx,BUFFER_SIZE
call ReadFromFile
jnc check_buffer_size ; error reading?
mWrite "Error reading file. " ; yes: show error message
call WriteWindowsMsg
jmp close_file
check_buffer_size:
cmp eax,BUFFER_SIZE ; buffer large enough?
jb buf_size_ok ; yes
mWrite <"Error: Buffer too small for the file",0dh,0ah>
jmp quit ; and quit
buf_size_ok:
mov buffer[eax],0 ; insert null terminator
mWrite "File size: "
call WriteDec ; display file size
call Crlf
; Display the buffer.
mWrite <"Buffer:",0dh,0ah,0dh,0ah>
mov edx,OFFSET buffer ; display the buffer
call WriteString
call Crlf
close_file:
mov eax,fileHandle
call CloseFile
quit:
exit
main ENDP
END main
