git-svn-id: http://svn.code.sf.net/p/netboot65/code@175 93682198-c243-4bdb-bd91-e943c89aac3b

client/ip65/dottedquad.s

@@ -15,11 +15,12 @@
 
 ; convert a string representing a dotted quad (IP address, netmask) into 4 octets
 ; inputs:
-;   AX= pointer to null-terminated string containing dotted quad
+;   AX= pointer to null-terminated (*) string containing dotted quad
 ;         e.g. "192.168.1.0",0
 ; outputs:
 ;   carry flag is set if there was an error, clear otherwise
 ;   dotted_quad_value: will be set to (32 bit) ip address (if no error)
+; (*) NB to assist with url parsing, a ':' or '/' can also terminate the string
 parse_dotted_quad:
     stax  dotted_quad_ptr+1
     
@@ -38,6 +39,10 @@ parse_dotted_quad:
     and #$7F  ;turn off bit 7
     cmp #'.'
     beq @got_dot
+    cmp #':'
+    beq @done
+    cmp #'/'
+    beq @done
     sec
     sbc #'0'
     bcc @error

client/ip65/parser.s

@@ -20,7 +20,7 @@ search_string=copy_dest
 
 .bss
 int_value: .res 2
-
+temp_ptr: .res 2
 .data
 get_next_byte:
 current_string_ptr=get_next_byte+1
@@ -48,8 +48,11 @@ parser_init:
 ;inputs: AX= pointer to (null terminated) string to search for 
 ;outputs: sec if search string not found
 ; if clc, AX = pointer to first byte after string specified 
+; if sec (i.e. no match found), pointer stays in same place
 parser_skip_next:
   stax  search_string
+  ldax  current_string_ptr
+  stax temp_ptr
 @check_string:
   ldy #0
   ldax  current_string_ptr
@@ -75,6 +78,7 @@ parser_skip_next:
  @not_matched:
   jsr get_next_byte
   bne @check_string
-  ldax search_string  
+  ldax  temp_ptr
+  stax current_string_ptr
   sec
   rts

client/ip65/url.s

@@ -21,7 +21,7 @@
 .export  url_ip
 .export  url_port
 .export  url_selector
-
+.export url_resource_type
 
 target_string=copy_src
 search_string=copy_dest
@@ -33,7 +33,7 @@ selector_buffer=output_buffer
   url_port: .res 2 ;will be set with port number of url
   url_selector: .res 2 ;will be set with address of selector part of URL
   url_type: .res 1
-  
+  url_resource_type: .res 1
   url_type_unknown=0
   url_type_gopher=1
   url_type_http=2
@@ -57,7 +57,7 @@ url_parse:
   sty url_type
   sty url_port
   sty url_port+1
-  
+  sty url_resource_type
 
   jsr skip_to_hostname
   bcc :+
@@ -111,11 +111,6 @@ lda #url_type_gopher
   bpl :-
 
   jsr skip_to_hostname
-  bcc :+
-  ldax url_string
-  jsr parser_init
-:  
-
   
   ;skip over next colon
   ldax #colon
@@ -136,21 +131,28 @@ lda #url_type_gopher
   sta src_ptr
   sta dest_ptr
   lda url_type
-  cmp #url_type_unknown
-  beq @done
+  
+  cmp #url_type_gopher
+  bne @not_gopher  
+  ;first byte after / in a gopher url is the resource type  
+  ldy src_ptr  
+  lda (copy_src),y
+  sta url_resource_type
+  inc src_ptr  
+  jmp @start_of_selector
+@not_gopher:  
   cmp #url_type_http
-  bne @no_get_at_start_of_selector
+  bne @done ; if it's not gopher or http, we don't know how to build a selector
   ldy #3
   sty dest_ptr
 :
   lda get,y
   sta (copy_dest),y
   dey
-  bpl :-
-
-@no_get_at_start_of_selector: 
-  inc dest_ptr
+  bpl :-  
+@start_of_selector: 
   lda #'/'
+  inc dest_ptr  
   jmp @save_first_byte_of_selector
 @copy_one_byte:
   ldy src_ptr  
@@ -159,8 +161,7 @@ lda #url_type_gopher
   inc src_ptr  
 @save_first_byte_of_selector:  
   ldy dest_ptr  
-  sta (copy_dest),y
-  
+  sta (copy_dest),y  
   inc dest_ptr
   bne @copy_one_byte
 @end_of_selector:

client/test/test_parser.s

@@ -53,14 +53,16 @@ init:
   jsr test_url_parse 
   ldax #url_4
   jsr test_url_parse 
+  jsr wait_key
   ldax #url_5
   jsr test_url_parse 
   ldax #url_6
   jsr test_url_parse 
   ldax #url_7
   jsr test_url_parse 
-  ldax #url_8
+  ldax #url_8  
   jsr test_url_parse 
+  jsr wait_key
   ldax #url_9
   jsr test_url_parse 
   ldax #url_a
@@ -135,6 +137,10 @@ print_parsed_url:
   jsr print_hex
   lda url_port
   jsr print_hex
+  ldax #type
+  jsr print
+  lda url_resource_type
+  jsr print_a
   jsr print_cr
   ldax #selector
   jsr  print
@@ -142,6 +148,11 @@ print_parsed_url:
   jsr print
   jmp print_cr
   
+wait_key:
+  ldax #press_a_key
+  jsr print
+  jmp get_key
+  
 .data
 
 entry: 
@@ -162,10 +173,10 @@ url_4:
 .byte "gopher://gopher.floodgap.com/",0
 
 url_5: 
-.byte "gopher://gopher.floodgap.com/goober",0
+.byte "gopher://10.5.1.164/0goober",0
 
 url_6: 
-.byte "gopher://gopher.floodgap.com:7070/goober",0
+.byte "gopher://gopher.floodgap.com:7070/7/goober",0
 
 url_7: 
 .byte "www.jamtronix.com",0
@@ -177,7 +188,7 @@ url_9:
 .byte "gopher.floodgap.com",0
 
 url_a: 
-.byte "gopher.floodgap.com:70",0
+.byte "10.5.1.123:70",0
 
 url_b: 
 .byte "gopher.floodgap.com:80",0
@@ -189,7 +200,9 @@ url_c:
 parsing: .asciiz "PARSING "
 ip: .asciiz "IP: "
 port: .asciiz " PORT: $"
+type: .asciiz " TYPE:"
 selector: .asciiz "SELECTOR: "
+press_a_key: .asciiz "PRESS ANY KEY TO CONTINUE"
 
 atom_file:
 ;.incbin "atom_test.xml"