X-Git-Url: https://git.danieliu.xyz/?p=sped.git;a=blobdiff_plain;f=sped.asm;h=e0920a1712b6c5af80784a4995d2eb9073796ef2;hp=1e200387d1f3d269662b89ce5a589cb7246a8e57;hb=HEAD;hpb=0af29f26ae69ba0ba9c5088612f0c537a20c0344

diff --git a/sped.asm b/sped.asm
index 1e20038..e0920a1 100644
--- a/sped.asm
+++ b/sped.asm
@@ -1,42 +1,35 @@
 ; sped - the stupidly pointless editor
 ; written by pinosaur
+; sped.asm: main file
 
-%include "fileutils.S"
+%include "macros.S"
 
-global main
 extern printf
-extern fflush
-extern stdout
-
-; macros
-%macro write_str 2
-    mov eax, 4
-    mov ebx, 1
-    mov ecx, %1
-    mov edx, %2
-    int 0x80
-%endmacro
+
+extern readFile
+extern repl
+
+global main
 
 section .data
     banner_str db `SPED - the stupidly pointless editor\n`, 0x00
-    nofile_str db `no file provided\n`, 0x00
-    prompt_str db `sped > `, 0x00
-    invalidcommand_str db `invalid command\n`, 0x00
-    charcount_str db `read %i chars\n`, 0x00
-
-section .bss
-    buffer resb 4
-    buffer_lines resb 4
-    cur_line resb 4
+    nofile_str db `no file provided.\n`, 0x00
+    readlines_str db `opened file with %i lines.\n`, 0x00
 
 section .text
 main:
     %define _ARGC 8
     %define _ARGV 12
 
+    %define BUFFER          4
+    %define BUFFER_LINES    8
+    %define BUFFER_FILENAME 12
+
     push ebp
     mov ebp, esp
 
+    sub esp, 12
+
     ; read command line args
     mov ecx, [ebp+_ARGC]
     cmp ecx, 1
@@ -51,79 +44,38 @@ main:
     _main_existing:
     mov ebx, DWORD [ebp+_ARGV]
     add ebx, 4 ; first user arg is filename
-    push DWORD [ebx]
+    mov ebx, [ebx]
+    mov [ebp-BUFFER_FILENAME], ebx
+
+    push DWORD [ebp-BUFFER_FILENAME]
     call readFile
 
-    mov [buffer], eax
-    mov [buffer_lines], ebx
-    mov DWORD [cur_line], 0x00
+    mov [ebp-BUFFER], eax
+    mov [ebp-BUFFER_LINES], ecx
+
+    push DWORD [ebp-BUFFER_LINES]
+    push readlines_str
+    call printf
 
+    push DWORD [ebp-BUFFER]
+    push DWORD [ebp-BUFFER_LINES]
+    push DWORD [ebp-BUFFER_FILENAME]
     call repl
 
     mov eax, 0
     jmp _main_exit
 
     _main_exit:
+
+    ; free string array
+
     %undef _ARGC
     %undef _ARGV
+    %undef BUFFER
+    %undef BUFFER_LINES
+    %undef BUFFER_FILENAME
 
     mov esp, ebp
     pop ebp
     ret
 
-; prompt for user
-; no args - reads from globals
-repl:
-
-    %define CMDSTR 4 ; the previous line read from user
-
-    push ebp
-    mov ebp, esp
-
-    sub esp, 4
-
-    _repl_loop:
-    
-    ; print the prompt
-    push prompt_str
-    call printf
-    push DWORD [stdout]
-    call fflush
-
-    ; read line from stdin
-    push 0
-    call readLine
-
-    mov DWORD [ebp-CMDSTR], eax
-
-    ; commands are single char for now
-    cmp ecx, 1 
-    jne _repl_invalid
-
-    ; parse commands
-    mov eax, DWORD [ebp-CMDSTR]
-    mov eax, [eax]
-
-    ; q exists program
-    mov eax, DWORD [ebp-CMDSTR]
-    cmp BYTE [eax], 'q'
-    jne _repl_cmd_quit_end
-    jmp _repl_exit
-    _repl_cmd_quit_end:
-
-
-    _repl_invalid:
-    push invalidcommand_str
-    call printf
-
-    _repl_continue:
-    jmp _repl_loop
-    
-    _repl_exit:
-
-    %undef CMDSTR
-
-    mov esp, ebp
-    pop ebp
-    ret
-