1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # `nitpretty` is a tool able to pretty print Nit files.
17 # See `man nitpretty` for more infos.
20 redef class ToolContext
21 # The working directory used to store temp files.
22 var opt_dir
= new OptionString("Working directory (default is '.nitpretty')", "--dir")
24 # Output pretty printed code with this filename.
25 var opt_output
= new OptionString("Output name (default is pretty.nit)", "-o",
28 # Show diff between source and pretty printed code.
29 var opt_diff
= new OptionBool("Show diff between source and output", "--diff")
31 # Show diff between source and pretty printed code using meld.
32 var opt_meld
= new OptionBool("Show diff between source and output using meld",
35 # Check formatting instead of pretty printing.
37 # This option create a tempory pretty printed file then check if
38 # the output of the diff command on the source file and the pretty
39 # printed one is empty.
40 var opt_check
= new OptionBool("Check format of Nit source files", "--check")
43 # Return result from diff between `file1` and `file2`.
44 private fun diff
(file1
, file2
: String): String do
45 var p
= new IProcess("diff", "-u", file1
, file2
)
53 var toolcontext
= new ToolContext
55 toolcontext
.option_context
.
56 add_option
(toolcontext
.opt_dir
, toolcontext
.opt_output
, toolcontext
.opt_diff
,
57 toolcontext
.opt_meld
, toolcontext
.opt_check
)
59 toolcontext
.tooldescription
= "Usage: nitpretty [OPTION]... <file.nit>\n" +
60 "Pretty print Nit code from Nit source files."
62 toolcontext
.process_options args
63 var arguments
= toolcontext
.option_context
.rest
66 var mbuilder
= new ModelBuilder(model
, toolcontext
)
67 var mmodules
= mbuilder
.parse
(arguments
)
70 if mmodules
.is_empty
then
71 print
"Error: no module to pretty print"
75 if not toolcontext
.opt_check
.value
and mmodules
.length
> 1 then
76 print
"Error: only --check option allow multiple modules"
80 var dir
= toolcontext
.opt_dir
.value
or else ".nitpretty"
81 if not dir
.file_exists
then dir
.mkdir
82 var v
= new PrettyPrinterVisitor
84 for mmodule
in mmodules
do
85 if not mbuilder
.mmodule2nmodule
.has_key
(mmodule
) then
86 print
" Error: no source file for module {mmodule}"
90 var nmodule
= mbuilder
.mmodule2nmodule
[mmodule
]
91 var file
= "{dir}/{mmodule.name}.nit"
92 var tpl
= v
.pretty_nmodule
(nmodule
)
93 tpl
.write_to_file file
95 if toolcontext
.opt_check
.value
then
96 var res
= diff
(nmodule
.location
.file
.filename
, file
)
98 if not res
.is_empty
then
99 print
"Wrong formating for module {nmodule.location.file.filename}"
100 toolcontext
.info
(res
, 1)
102 if toolcontext
.opt_meld
.value
then
103 sys
.system
"meld {nmodule.location.file.filename} {file}"
106 toolcontext
.info
("[OK] {nmodule.location.file.filename}", 1)
110 var out
= toolcontext
.opt_output
.value
111 if out
!= null then sys
.system
"cp {file} {out}"
114 if toolcontext
.opt_meld
.value
then
115 sys
.system
"meld {arguments.first} {file}"
120 if toolcontext
.opt_diff
.value
then
121 var res
= diff
(arguments
.first
, file
)
122 if not res
.is_empty
then print res
127 if not toolcontext
.opt_quiet
.value
then tpl
.write_to sys
.stdout