path: root/python-autocommand.spec

%global _empty_manifest_terminate_build 0
Name:		python-autocommand
Version:	2.2.2
Release:	1
Summary:	A library to create a command-line program from a function
License:	LGPLv3
URL:		https://github.com/Lucretiel/autocommand
Source0:	https://mirrors.nju.edu.cn/pypi/web/packages/5b/18/774bddb96bc0dc0a2b8ac2d2a0e686639744378883da0fc3b96a54192d7a/autocommand-2.2.2.tar.gz
BuildArch:	noarch


%description
    Some extra documentation in the epilog
    '''
    with smart_open(infile) as istr:
        with smart_open(outfile, 'w') as ostr:
            for line in istr:
                ostr.write(line)
```
```
$ python copy.py -h
usage: copy.py [-h] [-i INFILE] [-o OUTFILE]
Copy an the contents of a file (or stdin) to another file (or stdout)
optional arguments:
  -h, --help            show this help message and exit
  -i INFILE, --infile INFILE
  -o OUTFILE, --outfile OUTFILE
Some extra documentation in the epilog
$ echo "Hello World" | python copy.py --outfile hello.txt
$ python copy.py --infile hello.txt --outfile hello2.txt
$ python copy.py --infile hello2.txt
Hello World
```
### Parameter descriptions
You can also attach description text to individual parameters in the annotation. To attach both a type and a description, supply them both in any order in a tuple
```python
@autocommand(__name__)
def copy_net(
    infile: 'The name of the file to send',
    host: 'The host to send the file to',
    port: (int, 'The port to connect to')):
    '''
    Copy a file over raw TCP to a remote destination.
    '''
    # Left as an exercise to the reader
```
### Decorators and wrappers
Autocommand automatically follows wrapper chains created by `@functools.wraps`. This means that you can apply other wrapping decorators to your main function, and autocommand will still correctly detect the signature.
```python
from functools import wraps
from autocommand import autocommand
def print_yielded(func):
    '''
    Convert a generator into a function that prints all yielded elements
    '''
    @wraps(func)
    def wrapper(*args, **kwargs):
        for thing in func(*args, **kwargs):
            print(thing)
    return wrapper
@autocommand(__name__,
    description= 'Print all the values from START to STOP, inclusive, in steps of STEP',
    epilog=      'STOP and STEP default to 1')
@print_yielded
def seq(stop, start=1, step=1):
    for i in range(start, stop + 1, step):
        yield i
```
```
$ seq.py -h
usage: seq.py [-h] [-s START] [-S STEP] stop
Print all the values from START to STOP, inclusive, in steps of STEP
positional arguments:
  stop
optional arguments:
  -h, --help            show this help message and exit
  -s START, --start START
  -S STEP, --step STEP
STOP and STEP default to 1
```
Even though autocommand is being applied to the `wrapper` returned by `print_yielded`, it still retreives the signature of the underlying `seq` function to create the argument parsing.
### Custom Parser
While autocommand's automatic parser generator is a powerful convenience, it doesn't cover all of the different features that argparse provides. If you need these features, you can provide your own parser as a kwarg to `autocommand`:
```python
from argparse import ArgumentParser
from autocommand import autocommand
parser = ArgumentParser()
# autocommand can't do optional positonal parameters
parser.add_argument('arg', nargs='?')
# or mutually exclusive options
group = parser.add_mutually_exclusive_group()
group.add_argument('-v', '--verbose', action='store_true')
group.add_argument('-q', '--quiet', action='store_true')
@autocommand(__name__, parser=parser)
def main(arg, verbose, quiet):
    print(arg, verbose, quiet)
```
```
$ python parser.py -h
usage: write_file.py [-h] [-v | -q] [arg]
positional arguments:
  arg
optional arguments:
  -h, --help     show this help message and exit
  -v, --verbose
  -q, --quiet
$ python parser.py
None False False
$ python parser.py hello
hello False False
$ python parser.py -v
None True False
$ python parser.py -q
None False True
$ python parser.py -vq
usage: parser.py [-h] [-v | -q] [arg]
parser.py: error: argument -q/--quiet: not allowed with argument -v/--verbose
```
Any parser should work fine, so long as each of the parser's arguments has a corresponding parameter in the decorated main function. The order of parameters doesn't matter, as long as they are all present. Note that when using a custom parser, autocommand doesn't modify the parser or the retrieved arguments. This means that no description/epilog will be added, and the function's type annotations and defaults (if present) will be ignored.
## Testing and Library use
The decorated function is only called and exited from if the first argument to `autocommand` is `'__main__'` or `True`. If it is neither of these values, or no argument is given, then a new main function is created by the decorator. This function has the signature `main(argv=None)`, and is intended to be called with arguments as if via `main(sys.argv[1:])`. The function has the attributes `parser` and `main`, which are the generated `ArgumentParser` and the original main function that was decorated. This is to facilitate testing and library use of your main. Calling the function triggers a `parse_args()` with the supplied arguments, and returns the result of the main function. Note that, while it returns instead of calling `sys.exit`, the `parse_args()` function will raise a `SystemExit` in the event of a parsing error or `-h/--help` argument.
```python
    @autocommand()
    def test_prog(arg1, arg2: int, quiet=False, verbose=False):
        if not quiet:
            print(arg1, arg2)
            if verbose:
                print("LOUD NOISES")
        return 0
    print(test_prog(['-v', 'hello', '80']))
```
```
$ python test_prog.py
hello 80
LOUD NOISES
0
```
If the function is called with no arguments, `sys.argv[1:]` is used. This is to allow the autocommand function to be used as a setuptools entry point.
## Exceptions and limitations
- There are a few possible exceptions that `autocommand` can raise. All of them derive from `autocommand.AutocommandError`.
  - If an invalid annotation is given (that is, it isn't a `type`, `str`, `(type, str)`, or `(str, type)`, an `AnnotationError` is raised. The `type` may be any callable, as described in the `Types`_ section.
  - If the function has a `**kwargs` parameter, a `KWargError` is raised.
  - If, somehow, the function has a positional-only parameter, a `PositionalArgError` is raised. This means that the argument doesn't have a name, which is currently not possible with a plain `def` or `lambda`, though many built-in functions have this kind of parameter.
- There are a few argparse features that are not supported by autocommand.
  - It isn't possible to have an optional positional argument (as opposed to a `--option`). POSIX thinks this is bad form anyway.
  - It isn't possible to have mutually exclusive arguments or options
  - It isn't possible to have subcommands or subparsers, though I'm working on a few solutions involving classes or nested function definitions to allow this.
## Development
Autocommand cannot be important from the project root; this is to enforce separation of concerns and prevent accidental importing of `setup.py` or tests. To develop, install the project in editable mode:
```
$ python setup.py develop
```
This will create a link to the source files in the deployment directory, so that any source changes are reflected when it is imported.

%package -n python3-autocommand
Summary:	A library to create a command-line program from a function
Provides:	python-autocommand
BuildRequires:	python3-devel
BuildRequires:	python3-setuptools
BuildRequires:	python3-pip
%description -n python3-autocommand
    Some extra documentation in the epilog
    '''
    with smart_open(infile) as istr:
        with smart_open(outfile, 'w') as ostr:
            for line in istr:
                ostr.write(line)
```
```
$ python copy.py -h
usage: copy.py [-h] [-i INFILE] [-o OUTFILE]
Copy an the contents of a file (or stdin) to another file (or stdout)
optional arguments:
  -h, --help            show this help message and exit
  -i INFILE, --infile INFILE
  -o OUTFILE, --outfile OUTFILE
Some extra documentation in the epilog
$ echo "Hello World" | python copy.py --outfile hello.txt
$ python copy.py --infile hello.txt --outfile hello2.txt
$ python copy.py --infile hello2.txt
Hello World
```
### Parameter descriptions
You can also attach description text to individual parameters in the annotation. To attach both a type and a description, supply them both in any order in a tuple
```python
@autocommand(__name__)
def copy_net(
    infile: 'The name of the file to send',
    host: 'The host to send the file to',
    port: (int, 'The port to connect to')):
    '''
    Copy a file over raw TCP to a remote destination.
    '''
    # Left as an exercise to the reader
```
### Decorators and wrappers
Autocommand automatically follows wrapper chains created by `@functools.wraps`. This means that you can apply other wrapping decorators to your main function, and autocommand will still correctly detect the signature.
```python
from functools import wraps
from autocommand import autocommand
def print_yielded(func):
    '''
    Convert a generator into a function that prints all yielded elements
    '''
    @wraps(func)
    def wrapper(*args, **kwargs):
        for thing in func(*args, **kwargs):
            print(thing)
    return wrapper
@autocommand(__name__,
    description= 'Print all the values from START to STOP, inclusive, in steps of STEP',
    epilog=      'STOP and STEP default to 1')
@print_yielded
def seq(stop, start=1, step=1):
    for i in range(start, stop + 1, step):
        yield i
```
```
$ seq.py -h
usage: seq.py [-h] [-s START] [-S STEP] stop
Print all the values from START to STOP, inclusive, in steps of STEP
positional arguments:
  stop
optional arguments:
  -h, --help            show this help message and exit
  -s START, --start START
  -S STEP, --step STEP
STOP and STEP default to 1
```
Even though autocommand is being applied to the `wrapper` returned by `print_yielded`, it still retreives the signature of the underlying `seq` function to create the argument parsing.
### Custom Parser
While autocommand's automatic parser generator is a powerful convenience, it doesn't cover all of the different features that argparse provides. If you need these features, you can provide your own parser as a kwarg to `autocommand`:
```python
from argparse import ArgumentParser
from autocommand import autocommand
parser = ArgumentParser()
# autocommand can't do optional positonal parameters
parser.add_argument('arg', nargs='?')
# or mutually exclusive options
group = parser.add_mutually_exclusive_group()
group.add_argument('-v', '--verbose', action='store_true')
group.add_argument('-q', '--quiet', action='store_true')
@autocommand(__name__, parser=parser)
def main(arg, verbose, quiet):
    print(arg, verbose, quiet)
```
```
$ python parser.py -h
usage: write_file.py [-h] [-v | -q] [arg]
positional arguments:
  arg
optional arguments:
  -h, --help     show this help message and exit
  -v, --verbose
  -q, --quiet
$ python parser.py
None False False
$ python parser.py hello
hello False False
$ python parser.py -v
None True False
$ python parser.py -q
None False True
$ python parser.py -vq
usage: parser.py [-h] [-v | -q] [arg]
parser.py: error: argument -q/--quiet: not allowed with argument -v/--verbose
```
Any parser should work fine, so long as each of the parser's arguments has a corresponding parameter in the decorated main function. The order of parameters doesn't matter, as long as they are all present. Note that when using a custom parser, autocommand doesn't modify the parser or the retrieved arguments. This means that no description/epilog will be added, and the function's type annotations and defaults (if present) will be ignored.
## Testing and Library use
The decorated function is only called and exited from if the first argument to `autocommand` is `'__main__'` or `True`. If it is neither of these values, or no argument is given, then a new main function is created by the decorator. This function has the signature `main(argv=None)`, and is intended to be called with arguments as if via `main(sys.argv[1:])`. The function has the attributes `parser` and `main`, which are the generated `ArgumentParser` and the original main function that was decorated. This is to facilitate testing and library use of your main. Calling the function triggers a `parse_args()` with the supplied arguments, and returns the result of the main function. Note that, while it returns instead of calling `sys.exit`, the `parse_args()` function will raise a `SystemExit` in the event of a parsing error or `-h/--help` argument.
```python
    @autocommand()
    def test_prog(arg1, arg2: int, quiet=False, verbose=False):
        if not quiet:
            print(arg1, arg2)
            if verbose:
                print("LOUD NOISES")
        return 0
    print(test_prog(['-v', 'hello', '80']))
```
```
$ python test_prog.py
hello 80
LOUD NOISES
0
```
If the function is called with no arguments, `sys.argv[1:]` is used. This is to allow the autocommand function to be used as a setuptools entry point.
## Exceptions and limitations
- There are a few possible exceptions that `autocommand` can raise. All of them derive from `autocommand.AutocommandError`.
  - If an invalid annotation is given (that is, it isn't a `type`, `str`, `(type, str)`, or `(str, type)`, an `AnnotationError` is raised. The `type` may be any callable, as described in the `Types`_ section.
  - If the function has a `**kwargs` parameter, a `KWargError` is raised.
  - If, somehow, the function has a positional-only parameter, a `PositionalArgError` is raised. This means that the argument doesn't have a name, which is currently not possible with a plain `def` or `lambda`, though many built-in functions have this kind of parameter.
- There are a few argparse features that are not supported by autocommand.
  - It isn't possible to have an optional positional argument (as opposed to a `--option`). POSIX thinks this is bad form anyway.
  - It isn't possible to have mutually exclusive arguments or options
  - It isn't possible to have subcommands or subparsers, though I'm working on a few solutions involving classes or nested function definitions to allow this.
## Development
Autocommand cannot be important from the project root; this is to enforce separation of concerns and prevent accidental importing of `setup.py` or tests. To develop, install the project in editable mode:
```
$ python setup.py develop
```
This will create a link to the source files in the deployment directory, so that any source changes are reflected when it is imported.

%package help
Summary:	Development documents and examples for autocommand
Provides:	python3-autocommand-doc
%description help
    Some extra documentation in the epilog
    '''
    with smart_open(infile) as istr:
        with smart_open(outfile, 'w') as ostr:
            for line in istr:
                ostr.write(line)
```
```
$ python copy.py -h
usage: copy.py [-h] [-i INFILE] [-o OUTFILE]
Copy an the contents of a file (or stdin) to another file (or stdout)
optional arguments:
  -h, --help            show this help message and exit
  -i INFILE, --infile INFILE
  -o OUTFILE, --outfile OUTFILE
Some extra documentation in the epilog
$ echo "Hello World" | python copy.py --outfile hello.txt
$ python copy.py --infile hello.txt --outfile hello2.txt
$ python copy.py --infile hello2.txt
Hello World
```
### Parameter descriptions
You can also attach description text to individual parameters in the annotation. To attach both a type and a description, supply them both in any order in a tuple
```python
@autocommand(__name__)
def copy_net(
    infile: 'The name of the file to send',
    host: 'The host to send the file to',
    port: (int, 'The port to connect to')):
    '''
    Copy a file over raw TCP to a remote destination.
    '''
    # Left as an exercise to the reader
```
### Decorators and wrappers
Autocommand automatically follows wrapper chains created by `@functools.wraps`. This means that you can apply other wrapping decorators to your main function, and autocommand will still correctly detect the signature.
```python
from functools import wraps
from autocommand import autocommand
def print_yielded(func):
    '''
    Convert a generator into a function that prints all yielded elements
    '''
    @wraps(func)
    def wrapper(*args, **kwargs):
        for thing in func(*args, **kwargs):
            print(thing)
    return wrapper
@autocommand(__name__,
    description= 'Print all the values from START to STOP, inclusive, in steps of STEP',
    epilog=      'STOP and STEP default to 1')
@print_yielded
def seq(stop, start=1, step=1):
    for i in range(start, stop + 1, step):
        yield i
```
```
$ seq.py -h
usage: seq.py [-h] [-s START] [-S STEP] stop
Print all the values from START to STOP, inclusive, in steps of STEP
positional arguments:
  stop
optional arguments:
  -h, --help            show this help message and exit
  -s START, --start START
  -S STEP, --step STEP
STOP and STEP default to 1
```
Even though autocommand is being applied to the `wrapper` returned by `print_yielded`, it still retreives the signature of the underlying `seq` function to create the argument parsing.
### Custom Parser
While autocommand's automatic parser generator is a powerful convenience, it doesn't cover all of the different features that argparse provides. If you need these features, you can provide your own parser as a kwarg to `autocommand`:
```python
from argparse import ArgumentParser
from autocommand import autocommand
parser = ArgumentParser()
# autocommand can't do optional positonal parameters
parser.add_argument('arg', nargs='?')
# or mutually exclusive options
group = parser.add_mutually_exclusive_group()
group.add_argument('-v', '--verbose', action='store_true')
group.add_argument('-q', '--quiet', action='store_true')
@autocommand(__name__, parser=parser)
def main(arg, verbose, quiet):
    print(arg, verbose, quiet)
```
```
$ python parser.py -h
usage: write_file.py [-h] [-v | -q] [arg]
positional arguments:
  arg
optional arguments:
  -h, --help     show this help message and exit
  -v, --verbose
  -q, --quiet
$ python parser.py
None False False
$ python parser.py hello
hello False False
$ python parser.py -v
None True False
$ python parser.py -q
None False True
$ python parser.py -vq
usage: parser.py [-h] [-v | -q] [arg]
parser.py: error: argument -q/--quiet: not allowed with argument -v/--verbose
```
Any parser should work fine, so long as each of the parser's arguments has a corresponding parameter in the decorated main function. The order of parameters doesn't matter, as long as they are all present. Note that when using a custom parser, autocommand doesn't modify the parser or the retrieved arguments. This means that no description/epilog will be added, and the function's type annotations and defaults (if present) will be ignored.
## Testing and Library use
The decorated function is only called and exited from if the first argument to `autocommand` is `'__main__'` or `True`. If it is neither of these values, or no argument is given, then a new main function is created by the decorator. This function has the signature `main(argv=None)`, and is intended to be called with arguments as if via `main(sys.argv[1:])`. The function has the attributes `parser` and `main`, which are the generated `ArgumentParser` and the original main function that was decorated. This is to facilitate testing and library use of your main. Calling the function triggers a `parse_args()` with the supplied arguments, and returns the result of the main function. Note that, while it returns instead of calling `sys.exit`, the `parse_args()` function will raise a `SystemExit` in the event of a parsing error or `-h/--help` argument.
```python
    @autocommand()
    def test_prog(arg1, arg2: int, quiet=False, verbose=False):
        if not quiet:
            print(arg1, arg2)
            if verbose:
                print("LOUD NOISES")
        return 0
    print(test_prog(['-v', 'hello', '80']))
```
```
$ python test_prog.py
hello 80
LOUD NOISES
0
```
If the function is called with no arguments, `sys.argv[1:]` is used. This is to allow the autocommand function to be used as a setuptools entry point.
## Exceptions and limitations
- There are a few possible exceptions that `autocommand` can raise. All of them derive from `autocommand.AutocommandError`.
  - If an invalid annotation is given (that is, it isn't a `type`, `str`, `(type, str)`, or `(str, type)`, an `AnnotationError` is raised. The `type` may be any callable, as described in the `Types`_ section.
  - If the function has a `**kwargs` parameter, a `KWargError` is raised.
  - If, somehow, the function has a positional-only parameter, a `PositionalArgError` is raised. This means that the argument doesn't have a name, which is currently not possible with a plain `def` or `lambda`, though many built-in functions have this kind of parameter.
- There are a few argparse features that are not supported by autocommand.
  - It isn't possible to have an optional positional argument (as opposed to a `--option`). POSIX thinks this is bad form anyway.
  - It isn't possible to have mutually exclusive arguments or options
  - It isn't possible to have subcommands or subparsers, though I'm working on a few solutions involving classes or nested function definitions to allow this.
## Development
Autocommand cannot be important from the project root; this is to enforce separation of concerns and prevent accidental importing of `setup.py` or tests. To develop, install the project in editable mode:
```
$ python setup.py develop
```
This will create a link to the source files in the deployment directory, so that any source changes are reflected when it is imported.

%prep
%autosetup -n autocommand-2.2.2

%build
%py3_build

%install
%py3_install
install -d -m755 %{buildroot}/%{_pkgdocdir}
if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
pushd %{buildroot}
if [ -d usr/lib ]; then
	find usr/lib -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/lib64 ]; then
	find usr/lib64 -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/bin ]; then
	find usr/bin -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/sbin ]; then
	find usr/sbin -type f -printf "/%h/%f\n" >> filelist.lst
fi
touch doclist.lst
if [ -d usr/share/man ]; then
	find usr/share/man -type f -printf "/%h/%f.gz\n" >> doclist.lst
fi
popd
mv %{buildroot}/filelist.lst .
mv %{buildroot}/doclist.lst .

%files -n python3-autocommand -f filelist.lst
%dir %{python3_sitelib}/*

%files help -f doclist.lst
%{_docdir}/*

%changelog
* Tue Apr 11 2023 Python_Bot <Python_Bot@openeuler.org> - 2.2.2-1
- Package Spec generated