使用 Fprettify 格式化你的代码
简介
Fprettify 是专用于 Fortran 的代码格式化工具。使用它可以解放我们的思想，使得代码保持统一的编程风格，使我们专注于代码业务。
仓库：https://github.com/pseewald/fprettify
安装
首先我们需要先安装 Python 3 和 PIP，然后安装 Fprettify：
pip install --upgrade fprettify
使用 Fprettify
但我们写完 Fortran 代码后，我们可以通过命令行工具 Fprettify 来格式化代码：
fprettify -i 4 file.f90
一般很多特性都有合适的默认值，-i是用来指定缩进的空格数，这是我们比较个性化和常用的。
更多的命令行参数可以使用 fprettify --help 查看。
$ fprettify --help
usage: C:\msys64\ucrt64\bin\fprettify [-h] [-c CONFIG_FILE] [-i INDENT]
[-l LINE_LENGTH] [-w {0,1,2,3,4}]
[--whitespace-comma [WHITESPACE_COMMA]]
[--whitespace-assignment [WHITESPACE_ASSIGNMENT]]
[--whitespace-decl [WHITESPACE_DECL]]
[--whitespace-relational [WHITESPACE_RELATIONAL]]
[--whitespace-logical [WHITESPACE_LOGICAL]]
[--whitespace-plusminus [WHITESPACE_PLUSMINUS]]
[--whitespace-multdiv [WHITESPACE_MULTDIV]]
[--whitespace-print [WHITESPACE_PRINT]]
[--whitespace-type [WHITESPACE_TYPE]]
[--whitespace-intrinsics [WHITESPACE_INTRINSICS]]
[--strict-indent] [--enable-decl]
[--disable-indent]
[--disable-whitespace]
[--enable-replacements] [--c-relations]
[--case CASE CASE CASE CASE]
[--strip-comments] [--disable-fypp]
[--disable-indent-mod] [-d] [-s] [-S]
[-r] [-e EXCLUDE] [-f FORTRAN]
[--version]
[path ...]
Auto-format modern Fortran source files. Config files ('.fprettify.rc') in the
home (~) directory and any such files located in parent directories of the
input file will be used. When the standard input is used, the search is
started from the current directory.
positional arguments:
path Paths to files to be formatted inplace. If no paths
are given, stdin (-) is used by default. Path can be a
directory if --recursive is used. (default: ['-'])
optional arguments:
-h, --help show this help message and exit
-c CONFIG_FILE, --config-file CONFIG_FILE
config file path (default: None)
-i INDENT, --indent INDENT
relative indentation width (default: 3)
-l LINE_LENGTH, --line-length LINE_LENGTH
column after which a line should end, viz. -ffree-
line-length-n for GCC (default: 132)
-w {0,1,2,3,4}, --whitespace {0,1,2,3,4}
Presets for the amount of whitespace - 0: minimal
whitespace | 1: operators (except arithmetic),
print/read | 2: operators, print/read, plus/minus | 3:
operators, print/read, plus/minus, muliply/divide | 4:
operators, print/read, plus/minus, muliply/divide,
type component selector (default: 2)
--whitespace-comma [WHITESPACE_COMMA]
boolean, en-/disable whitespace for comma/semicolons
(default: None)
--whitespace-assignment [WHITESPACE_ASSIGNMENT]
boolean, en-/disable whitespace for assignments
(default: None)
--whitespace-decl [WHITESPACE_DECL]
boolean, en-/disable whitespace for declarations
(requires '--enable-decl') (default: None)
--whitespace-relational [WHITESPACE_RELATIONAL]
boolean, en-/disable whitespace for relational
operators (default: None)
--whitespace-logical [WHITESPACE_LOGICAL]
boolean, en-/disable whitespace for logical operators
(default: None)
--whitespace-plusminus [WHITESPACE_PLUSMINUS]
boolean, en-/disable whitespace for plus/minus
arithmetic (default: None)
--whitespace-multdiv [WHITESPACE_MULTDIV]
boolean, en-/disable whitespace for multiply/divide
arithmetic (default: None)
--whitespace-print [WHITESPACE_PRINT]
boolean, en-/disable whitespace for print/read
statements (default: None)
--whitespace-type [WHITESPACE_TYPE]
boolean, en-/disable whitespace for select type
components (default: None)
--whitespace-intrinsics [WHITESPACE_INTRINSICS]
boolean, en-/disable whitespace for intrinsics like
if/write/close (default: None)
--strict-indent strictly impose indentation even for nested loops
(default: False)
--enable-decl enable whitespace formatting of declarations ('::'
operator). (default: False)
--disable-indent don't impose indentation (default: False)
--disable-whitespace don't impose whitespace formatting (default: False)
--enable-replacements
replace relational operators (e.g. '.lt.' <--> '<')
(default: False)
--c-relations C-style relational operators ('<', '<=', ...)
(default: False)
--case CASE CASE CASE CASE
Enable letter case formatting of intrinsics by
specifying which of keywords, procedures/modules,
operators and constants (in this order) should be
lowercased or uppercased - 0: do nothing | 1:
lowercase | 2: uppercase (default: [0, 0, 0, 0])
--strip-comments strip whitespaces before comments (default: False)
--disable-fypp Disables the indentation of fypp preprocessor blocks.
(default: False)
--disable-indent-mod Disables the indentation after module / program.
(default: False)
-d, --diff Write file differences to stdout instead of formatting
inplace (default: False)
-s, --stdout Write to stdout instead of formatting inplace
(default: False)
-S, --silent, --no-report-errors
Don't write any errors or warnings to stderr (default:
False)
-r, --recursive Recursively auto-format all Fortran files in
subdirectories of specified path; recognized filename
extensions: .f, .for, .ftn, .f90, .f95, .f03, .fpp,
.F, .FOR, .FTN, .F90, .F95, .F03, .FPP (default:
False)
-e EXCLUDE, --exclude EXCLUDE
File or directory patterns to be excluded when
searching for Fortran files to format (default: [])
-f FORTRAN, --fortran FORTRAN
Overrides default fortran extensions recognized by
--recursive. Repeat this option to specify more than
one extension. (default: [])
--version show program's version number and exit
Args that start with '--' (eg. -i) can also be set in a config file (specified
via -c). Config file syntax allows: key=value, flag=true, stuff=[a,b,c] (for
details, see syntax at https://goo.gl/R74nmi). If an arg is specified in more
than one place, then commandline values override config file values which
override defaults.
fprettify / findent
fprettify的更新也不算频繁，它已经有1年没有版本更新了。
与此同时，findent也是Fortran代码格式化工具，它自称比fprettify成熟，但似乎fprettify更易于使用。