Annotation of gforth/locate.fs, revision 1.2
1.1 pazsan 1: \ locate, using the TAGS file
2:
3: require string.fs
4:
5: Variable last-file
6: Variable line-buf
7:
8: \ example: invoke vi
9:
10: Defer do-location
11:
12: Variable sys-buf
13: : invoke-vi ( filename u line -- ) base @ >r decimal
14: s" vi " sys-buf $!
15: 0 <# bl hold #S '+ hold #> sys-buf $+!
16: sys-buf $+!
17: r> base ! sys-buf $@ system ;
18: ' invoke-vi IS do-location
19:
20: \ scan file
21:
22: : tag-line ( fid -- flag ) >r
23: s" " line-buf $!
24: $100 line-buf $!len
25: line-buf $@ r> read-line throw
26: swap line-buf $!len ;
27: : check-word ( addr u -- addr u flag )
28: line-buf $@ #del $split 2nip ctrl A $split 2drop
29: 2swap search nip nip ;
30: : get-file ( fid -- )
31: tag-line drop line-buf $@ ', $split 2drop last-file $! ;
32: : print-location ( -- ) base @ >r decimal
33: last-file $@ line-buf $@ ctrl A $split 2nip ', $split 2drop
34: 0. 2swap >number 2drop drop r> base !
35: do-location ;
36: : locate ( "name" -- ) s" " last-file $! bl sword
37: s" TAGS" r/o open-file throw >r
38: BEGIN r@ tag-line WHILE
1.2 ! anton 39: s" " line-buf $@ str=
1.1 pazsan 40: IF r@ get-file
41: ELSE 2dup check-word
42: IF print-location 2drop r> close-file throw EXIT THEN
43: THEN
44: REPEAT r> close-file throw 2drop true abort" tag not found" ;
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