docs: ✏️ add license command

Author: ZhaoQi99

README.md

@@ -1,5 +1,7 @@
 # pyencrypt-pye
+
 ---
+
 encrypt python source code and import module dynamically.
 
 ```
@@ -16,10 +18,12 @@ encrypt python source code and import module dynamically.
 ```
 
 ## Install
+
 ```bash
 pip install git+https://github.com/ZhaoQi99/pyencrypt-pye.git
 ✨🍰✨
 ```
+
 ## Usage
 
 ```shell
@@ -33,23 +37,45 @@ Commands:
   decrypt   Decrypt encrypted pye file
   encrypt   Encrypt your python code
   generate  Generate loader file using specified key
+  license   Generate license file using specified key
 ```
 
 ### Encrypt
+
 ```shell
 ~$ pyencrypt encrypt -h
 Usage: pyencrypt encrypt [OPTIONS] PATHNAME
 
   Encrypt your python code
 
 Options:
-  -i, --in-place  make changes to files in place
-  -k, --key TEXT  Your encryption key.If you don‘t specify key, pyencrypt will
-                  generate encryption key randomly.
-  --yes           Automatically answer yes for confirm questions.
-  -h, --help      Show this message and exit.
+  -i, --in-place                  make changes to files in place
+  -k, --key TEXT                  Your encryption key.If you don‘t specify
+                                  key, pyencrypt will generate encryption key
+                                  randomly.
+  --with-license                  Add license to encrypted file
+  -m, --bind-mac TEXT             Bind mac address to encrypted file
+  -4, --bind-ipv4 TEXT            Bind ipv4 address to encrypted file
+  -b, --before [%Y-%m-%dT%H:%M:%S %z|%Y-%m-%d %H:%M:%S|%Y-%m-%d]
+                                  License is invalid before this date.
+  -a, --after [%Y-%m-%dT%H:%M:%S %z|%Y-%m-%d %H:%M:%S|%Y-%m-%d]
+                                  License is invalid after this date.
+  -y, --yes                       Automatically answer yes for confirm
+                                  questions.
+  -h, --help                      Show this message and exit.
+```
+
+### Entry File
+
+In your entry file, you must import `loader` firstly, and then you can import encrypted modules as usual.
+
+```python
+import loader
+from test import *
 ```
+
 ### Decrypt
+
 ```shell
 ~$ pyencrypt decrypt -h
 Usage: pyencrypt decrypt [OPTIONS] PATHNAME
@@ -61,6 +87,7 @@ Options:
   -k, --key TEXT  Your encryption key.  [required]
   -h, --help      Show this message and exit.
 ```
+
 ### Generate
 
 ```shell
@@ -74,26 +101,63 @@ Options:
   -h, --help      Show this message and exit.
 ```
 
+### License
+
+pyencrypt's loader will search for the license file in the following manner:
+
+1. `~/.licenses/license.lic` file in your home directory.
+
+2. `licenses/license.lic` file in `loader` file's directory.
+
+3. `licenses/license.lic` file in the current working directory.
+
+```shell
+   ~$ pyencrypt license -h
+   Usage: pyencrypt license [OPTIONS]
+
+   Generate license file  using specified key
+
+Options:
+  -h, --help                      Show this message and exit.
+  -k, --key TEXT                  Your encryption key.  [required]
+  -m, --bind-mac TEXT             Your mac address.
+  -4, --bind-ipv4 TEXT            Your ipv4 address.
+  -b, --before [%Y-%m-%dT%H:%M:%S %z|%Y-%m-%d %H:%M:%S|%Y-%m-%d]
+                                  License is invalid before this date.
+  -a, --after [%Y-%m-%dT%H:%M:%S %z|%Y-%m-%d %H:%M:%S|%Y-%m-%d]
+                                  License is invalid after this date.
+```
+
 ## Example
+
 ### Encrypt
+
 ```shell
 ~$ pyencrypt encrypt --in-place  -y test.py
 ~$ pyencrypt encrypt test/
+~$ pyencrypt encrypt test.py -y --with-license\
+    --before="2000-01-01T00:00:00 +0800" --after="2030-01-01T00:00:00 +0800"\
+    --bind-mac="AC:DE:48:00:11:22" --bind-ipv4="192.168.0.1"
 ```
 
 ### Decrypt
+
 ```shell
 ~$ pyencrypt decrypt -k xxx test.pye
 ```
+
 ### Generate
+
 ```shell
 ~$ pyencrypt generate -k xxx
 ```
 
-### Entry File
-```python
-import loader
-from test import *
+### License
+
+```shell
+~$ pyencrypt license -k xxx\
+    --before="2000-01-01T00:00:00 +0800" --after="2030-01-01T00:00:00 +0800"\
+    --bind-mac="AC:DE:48:00:11:22" --bind-ipv4="192.168.0.1"
 ```
 
 ## Development
@@ -104,7 +168,11 @@ from test import *
 yapf --recursive -i pyencrypt 
 isort pyencrypt
 ```
+
 ## License
+
 [GNU General Public License v3.0](https://github.com/ZhaoQi99/pyencrypt-pye/blob/main/LICENSE)
+
 ## Author
+
 * Qi Zhao([[email protected]](mailto:[email protected]))