fisher/man/man1/getopts.1
Jorge Bucaran 707855203a Ahoy! Fisherman gets a super patch v0.3.1
This patch contains several amends for 0.3.0 and
other minor documentation corrections.  Major
documentation revision and rewrite.

fisher help shows fisher(1) by default now.

Fix a critical bug that was causing fisher uninstall
--force to remove not the symbolic link, but the
actual files. Closes #24

Rename orphan tag to custom for plugins installed
using a custom URL.

warning Remove fisher --link flag and create symbolic
links by default for local paths. The user does not
have to worry about symbolic links or whether the
copy is as symbolic link or not anymore. If the user
tries to install a local path, then the best thing
to do is to create a symbolic link. This also
eliminates the need to call update.

warning Remove fisher --cache and fisher --validate.
Now, that these options are separated into their own
function and they are intentionally private, there
is no need for them.
2016-01-10 16:13:46 +09:00

146 lines
2.8 KiB
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.\" generated with Ronn/v0.7.3
.\" http://github.com/rtomayko/ronn/tree/0.7.3
.
.TH "GETOPTS" "1" "January 2016" "" "fisherman"
.
.SH "NAME"
\fBgetopts\fR \- Parse CLI options
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.SH "SYNOPSIS"
\fBgetopts\fR [\fIoptions\fR \.\.\.]
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.br
\fBgetopts\fR [\fIoptions\fR \.\.\.] \fB|\fR \fBwhile\fR read \-l key value; \.\.\.; \fBend\fR
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.br
.
.SH "DESCRIPTION"
getopts is a command line parser, designed to process command line arguments based in the POSIX Utility Syntax Guidelines\. If no arguments are given getopts returns \fB1\fR\.
.
.SH "USAGE"
In the following example:
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.IP "" 4
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.nf
getopts \-ab1 \-\-foo=bar baz
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.fi
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.IP "" 0
.
.P
And its output:
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.IP "" 4
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.nf
a
b 1
foo bar
_ baz
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.fi
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.IP "" 0
.
.P
The items on the left represent the option flags or \fIkeys\fR associated with the CLI\. The items on the right are the option \fIvalues\fR\. The underscore \fB_\fR character is the default \fIkey\fR for arguments without a key\.
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.P
Use \fBread(1)\fR to process the generated stream and \fBswitch(1)\fR to match patterns:
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.IP "" 4
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.nf
getopts \-ab1 \-\-foo=bar baz | while read \-l key option
switch $key
case _
case a
case b
case foo
end
end
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.fi
.
.IP "" 0
.
.SH "OPTIONS"
None\.
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.SH "EXAMPLES"
The following is a mock of \fBfish(1)\fR CLI missing the implementation:
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.IP "" 4
.
.nf
function fish
set \-l mode
set \-l flags
set \-l commands
set \-l debug_level
getopts $argv | while read \-l key value
switch $key
case c command
set commands $commands $value
case d debug\-level
set debug_level $value
case i interactive
set mode $value
case l login
set mode $value
case n no\-execute
set mode $value
case p profile
set flags $flags $value
case h help
printf "usage: $_ [OPTIONS] [\-c command] [FILE [ARGUMENTS\.\.\.]]\en"
return
case \e*
printf "$_: \'%s\' is not a valid option\.\en" $key
return 1
end
end
# Implementation
end
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.fi
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.IP "" 0
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.SH "BUGS"
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.IP "\(bu" 4
getopts does \fInot\fR read the standard input\. Use getopts to collect options and the standard input to process a stream of data relevant to your program\.
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.IP "\(bu" 4
A double dash, \fB\-\-\fR, marks the end of options\. Arguments after this sequence are placed in the default underscore key, \fB_\fR\.
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.IP "\(bu" 4
The getopts described in this document is \fInot\fR equivalent to the getopts \fIbuiltin\fR found in other shells\.
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.IP "" 0
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.SH "AUTHORS"
Jorge Bucaran \fIj@bucaran\.me\fR\.
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.SH "SEE ALSO"
POSIX Utility Syntax Guidelines [goo\.gl/yrgQn9]
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.br