Add structopt dependency in version 0.3.7

This patch series replaces argparse with structopt in the argument
handling code. As a first step, we need structopt as a dependency.

Import subrepo structopt/:structopt at efbdda4753592e27bc430fb01f7b9650b2f3174d
Import subrepo bitflags/:bitflags at 30668016aca6bd3b02c766e8347e0b4080d4c296
Import subrepo clap/:clap at 784524f7eb193e35f81082cc69454c8c21b948f7
Import subrepo heck/:heck at 093d56fbf001e1506e56dbfa38631d99b1066df1
Import subrepo proc-macro-error/:proc-macro-error at 6c4cfe79a622c5de8ae68557993542be46eacae2
Import subrepo proc-macro2/:proc-macro2 at d5d48eddca4566e5438e8a2cbed4a74e049544de
Import subrepo quote/:quote at 727436c6c137b20f0f34dde5d8fda2679b9747ad
Import subrepo rustversion/:rustversion at 0c5663313516263059ce9059ef81fc7a1cf655ca
Import subrepo syn-mid/:syn-mid at 5d3d85414a9e6674e1857ec22a87b96e04a6851a
Import subrepo syn/:syn at e87c27e87f6f4ef8919d0372bdb056d53ef0d8f3
Import subrepo textwrap/:textwrap at abcd618beae3f74841032aa5b53c1086b0a57ca2
Import subrepo unicode-segmentation/:unicode-segmentation at 637c9874c4fe0c205ff27787faf150a40295c6c3
Import subrepo unicode-width/:unicode-width at 3033826f8bf05e82724140a981d5941e48fce393
Import subrepo unicode-xid/:unicode-xid at 4baae9fffb156ba229665b972a9cd5991787ceb7

1 files changed, 97 insertions, 0 deletions

diff --git a/clap/examples/17_yaml.yml b/clap/examples/17_yaml.yml
new file mode 100644
index 0000000..b0d58b3
--- /dev/null
+++ b/clap/examples/17_yaml.yml
@@ -0,0 +1,97 @@
+name: yml_app
+version: "1.0"
+about: an example using a .yml file to build a CLI
+author: Kevin K. <kbknapp@gmail.com>
+
+# AppSettings can be defined as a list and are **not** ascii case sensitive
+settings:
+    - ArgRequiredElseHelp
+
+# All Args must be defined in the 'args:' list where the name of the arg, is the
+# key to a Hash object
+args:
+    # The name of this argument, is 'opt' which will be used to access the value
+    # later in your Rust code
+    - opt:
+        help: example option argument from yaml
+        short: o
+        long: option
+        multiple: true
+        takes_value: true
+    - pos:
+        help: example positional argument from yaml
+        index: 1
+        # A list of possible values can be defined as a list
+        possible_values:
+            - fast
+            - slow
+    - flag:
+        help: demo flag argument
+        short: F
+        multiple: true
+        global: true
+        # Conflicts, mutual overrides, and requirements can all be defined as a
+        # list, where the key is the name of the other argument
+        conflicts_with:
+            - opt
+        requires:
+            - pos
+    - mode:
+        long: mode
+        help: shows an option with specific values
+        # possible_values can also be defined in this list format
+        possible_values: [ vi, emacs ]
+        takes_value: true
+    - mvals:
+        long: mult-vals
+        help: demos an option which has two named values
+        # value names can be described in a list, where the help will be shown
+        # --mult-vals <one> <two>
+        value_names:
+            - one
+            - two
+    - minvals:
+        long: min-vals
+        multiple: true
+        help: you must supply at least two values to satisfy me
+        min_values: 2
+    - maxvals:
+        long: max-vals
+        multiple: true
+        help: you can only supply a max of 3 values for me!
+        max_values: 3
+
+# All subcommands must be listed in the 'subcommand:' object, where the key to
+# the list is the name of the subcommand, and all settings for that command are
+# are part of a Hash object
+subcommands:
+    # The name of this subcommand will be 'subcmd' which can be accessed in your
+    # Rust code later
+    - subcmd:
+        about: demos subcommands from yaml
+        version: "0.1"
+        author: Kevin K. <kbknapp@gmail.com>
+        # Subcommand args are exactly like App args
+        args:
+            - scopt:
+                short: B
+                multiple: true
+                help: example subcommand option
+                takes_value: true
+            - scpos1:
+                help: example subcommand positional
+                index: 1
+
+# ArgGroups are supported as well, and must be sepcified in the 'groups:'
+# object of this file
+groups:
+    # the name of the ArgGoup is specified here
+    - min-max-vals:
+        # All args and groups that are a part of this group are set here
+        args:
+            - minvals
+            - maxvals
+        # setting conflicts is done the same manner as setting 'args:'
+        #
+        # to make this group required, you could set 'required: true' but for
+        # this example we won't do that.