Commit 64d75979 authored by Taddeüs Kroes's avatar Taddeüs Kroes

Changed command-line usage

parent 5fcf5957
......@@ -4,10 +4,10 @@ open Types
type args = {
mutable infiles : string list;
mutable outfile : string option;
mutable verbose : int;
mutable echo : bool;
mutable pretty : bool;
mutable verbose : bool;
mutable prune : bool;
mutable unfold : bool;
mutable upto : int option;
}
(* Parse command-line arguments *)
......@@ -15,35 +15,46 @@ let parse_args () =
let args = {
infiles = [];
outfile = None;
verbose = 1;
echo = false;
pretty = false;
unfold = false;
verbose = false;
prune = true;
unfold = true;
upto = None;
} in
let args_spec = [
("<file> ...", Arg.Rest (fun _ -> ()),
" Optional input files (default is to read from stdin)");
" Input files (default is to read from stdin)");
("-o", Arg.String (fun s -> args.outfile <- Some s),
"<file> Output file (defaults to stdout)");
("-v", Arg.Int (fun i -> args.verbose <- i),
"<num> Set verbosity (0: nothing, 1: errors (default), \
2: compression rate, 3: debug)");
("--echo", Arg.Unit (fun _ -> args.echo <- true),
" Don't minify, just pretty-print the parsed CSS");
("--pretty", Arg.Unit (fun _ -> args.pretty <- true),
" Minify, but pretty-print the parsed CSS (for debugging)");
("--unfold", Arg.Unit (fun _ -> args.unfold <- true),
" Only unfold shorthands (for debugging)");
"<file> Output file (defaults to stdout)");
("-v", Arg.Unit (fun _ -> args.verbose <- true),
" Verbose mode: show compression rate");
("-no-prune", Arg.Unit (fun _ -> args.prune <- false),
" Don't prune duplicate properties (skip step 5 below)");
("-no-unfold", Arg.Unit (fun _ -> args.unfold <- false),
" Only minify whitespace, colors and shorthands \
(skip steps 2-7 below)");
("-upto", Arg.Int (fun i -> args.upto <- Some i),
"<step> Stop after the specified step (for debugging): \
\n \
1: parse \n \
2: unfold shorthands \n \
3: unfold selectors \n \
4: unfold blocks \n \
5: prune duplicates \n \
6: combine selectors \n \
7: concatenate blocks \n \
8: optimize blocks \n \
9: minify");
] in
let usage =
"Usage: " ^ Sys.argv.(0) ^ " [-o <file>] [-v <verbosity>] [<file> ...] " ^
"[--pretty | --echo]"
"Usage: " ^ Sys.argv.(0) ^ " [-o <file>] [-v] [-no-prune] [-upto <step>] \
[<file> ...] "
in
Arg.parse args_spec (fun f -> args.infiles <- args.infiles @ [f]) usage;
......@@ -65,7 +76,20 @@ let parse_files = function
(String.concat "" inputs, List.concat stylesheets)
let handle_args args =
let input, stylesheet = parse_files args.infiles in
let steps =
(*let switch flag fn = if flag then fn else fun s -> s in*)
[
(*
switch args.unfold Unfold.unfold_shorthands;
switch args.unfold Unfold.unfold_selectors;
switch args.unfold Unfold.unfold_blocks;
switch (args.unfold && args.prune) Unfold.prune_duplicates;
switch args.unfold Combine.combine_selectors;
switch args.unfold Concat.concat_blocks;
Optimize.optimize_blocks;
*)
]
in
let write_output =
match args.outfile with
......@@ -74,42 +98,41 @@ let handle_args args =
fun css -> let f = open_out name in output_string f css; close_out f
in
match args with
| {echo = true} ->
write_output (Stringify.string_of_stylesheet stylesheet)
| {unfold = true} ->
let stylesheet = Shorthand.unfold_stylesheet stylesheet in
write_output (Stringify.string_of_stylesheet stylesheet)
| _ ->
let stylesheet = Color.compress stylesheet in
let stylesheet = Shorthand.compress stylesheet in
let stringify =
if args.pretty
then Stringify.string_of_stylesheet
else Stringify.minify_stylesheet
in
let output = stringify stylesheet in
let upto = match args.upto with Some i -> i | None -> 0 in
let input, stylesheet = parse_files args.infiles in
let rec do_steps i stylesheet = function
| _ when i = upto ->
write_output (Stringify.string_of_stylesheet stylesheet)
| [] ->
let output = Stringify.minify_stylesheet stylesheet in
write_output output;
if args.verbose then begin
let il = String.length input in
let ol = String.length output in
Printf.fprintf stderr "compression: %d -> %d bytes (%d%% of original)\n"
il ol (int_of_float (float_of_int ol /. float_of_int il *. 100.))
end
| step :: tl ->
do_steps (i + 1) (step stylesheet) tl
in
write_output output;
do_steps 1 stylesheet steps
if args.verbose >= 2 then begin
let il = String.length input in
let ol = String.length output in
Printf.fprintf stderr "compression: %d -> %d bytes (%d%% of original)\n"
il ol (int_of_float (float_of_int ol /. float_of_int il *. 100.))
end
(* Main function, returns exit status *)
let main () =
let args = parse_args () in
begin
try
handle_args args;
handle_args (parse_args ());
exit 0
with
| Loc_error (loc, msg) ->
Util.prerr_loc_msg (args.verbose >= 1) loc ("Error: " ^ msg);
Util.prerr_loc_msg loc ("Error: " ^ msg);
| Box_error (box, msg) ->
prerr_endline ("Error: " ^ msg ^ ": " ^ Stringify.string_of_box box);
| Failure msg ->
......
......@@ -78,26 +78,24 @@ let prerr_loc (fname, ystart, yend, xstart, xend) =
end
done
let prerr_loc_msg verbose loc msg =
if verbose then begin
let (fname, ystart, yend, xstart, xend) = loc in
if loc != noloc then begin
let line_s = if yend != ystart
then sprintf "lines %d-%d" ystart yend
else sprintf "line %d" ystart
in
let char_s = if xend != xstart || yend != ystart
then sprintf "characters %d-%d" xstart xend
else sprintf "character %d" xstart
in
eprintf "File \"%s\", %s, %s:\n" fname line_s char_s;
end;
eprintf "%s\n" msg;
if verbose && loc != noloc then
try prerr_loc loc
with Sys_error _ -> ()
end
let prerr_loc_msg loc msg =
let (fname, ystart, yend, xstart, xend) = loc in
if loc != noloc then begin
let line_s = if yend != ystart
then sprintf "lines %d-%d" ystart yend
else sprintf "line %d" ystart
in
let char_s = if xend != xstart || yend != ystart
then sprintf "characters %d-%d" xstart xend
else sprintf "character %d" xstart
in
eprintf "File \"%s\", %s, %s:\n" fname line_s char_s;
end;
eprintf "%s\n" msg;
if loc != noloc then
try prerr_loc loc
with Sys_error _ -> ()
(** AST traversal *)
......
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