add license header to code files (#292)

* add license header to code files

* fix typo in license

* remove copyright from license headers

.snippets/code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs

@@ -1,3 +1,22 @@
+// This file is part of 'custom-pallet'.
+
+// SPDX-License-Identifier: MIT-0
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
 #![cfg_attr(not(feature = "std"), no_std)]
 
 pub use pallet::*;

.snippets/code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/tests/integration_tests.rs

@@ -1,3 +1,22 @@
+// This file is part of 'custom-pallet'.
+
+// SPDX-License-Identifier: MIT-0
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
 use custom_pallet::{self, *};
 use frame_support::{assert_noop, assert_ok, derive_impl, parameter_types, traits::ConstU32};
 use frame_system::RawOrigin;

tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet.md

@@ -94,9 +94,9 @@ You now have the bare minimum of package dependencies that your pallet requires
 2. Prepare the scaffolding for the pallet by adding the following:
 
     ```rust
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:1:16'
-        --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:23:23'
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:184:184'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:20:35'
+        --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:42:42'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:203:203'
     ```
 
 3. Verify that it compiles by running the following command:
@@ -118,7 +118,7 @@ In this step, you will configure two essential components that are critical for
 Add the following `Config` trait definition to your pallet:
 
 ```rust
---8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:14:23'
+--8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:33:42'
 ```
 
 ### Add Events
@@ -144,7 +144,7 @@ Below are the events defined for this pallet:
 Define the events in the pallet as follows:
 
 ```rust
---8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:25:51'
+--8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:44:70'
 ```
 
 ### Add Storage Items
@@ -158,7 +158,7 @@ Storage items are used to manage the pallet's state. This pallet defines two ite
 Define the storage items as follows:
 
 ```rust
---8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:53:59'
+--8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:72:78'
 ```
 
 ### Implement Custom Errors
@@ -170,7 +170,7 @@ To add custom errors, use the `#[pallet::error]` macro to define the `Error` enu
 Add the following errors to the pallet:
 
 ```rust
---8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:61:71'
+--8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:80:90'
 ```
 
 ### Implement Calls
@@ -180,10 +180,10 @@ The `#[pallet::call]` macro defines the dispatchable functions (or calls) the pa
 The structure of the dispatchable calls in this pallet is as follows:
 
 ```rust
---8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:73:84'
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:99:110'
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:143:154'
---8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:182:183'
+--8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:92:103'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:118:129'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:162:173'
+--8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:201:202'
 ```
 
 Below you can find the implementations of each dispatchable call in this pallet:
@@ -200,7 +200,7 @@ Below you can find the implementations of each dispatchable call in this pallet:
         - Emits a `CounterValueSet` event on success
 
     ```rust
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:75:99'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:94:118'
     ```
 
 ???- function "increment(origin: OriginFor<T>, amount_to_increment: u32) -> DispatchResult"
@@ -217,7 +217,7 @@ Below you can find the implementations of each dispatchable call in this pallet:
         - Emits a `CounterIncremented` event on success
 
     ```rust
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:101:143'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:120:162'
     ```
 
 
@@ -235,7 +235,7 @@ Below you can find the implementations of each dispatchable call in this pallet:
         - Emits a `CounterDecremented` event on success
 
     ```rust
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:145:182'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs:164:201'
     ```
 
 ## Verify Compilation
@@ -256,7 +256,7 @@ To review this implementation, you can find the complete pallet code below:
 
 ???+ example "Complete Pallet Code"
     ```rust
-    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs::184'
+    --8<-- 'code/tutorials/polkadot-sdk/parachains/zero-to-hero/build-custom-pallet/src/lib.rs::203'
     ```
 
 ## Where to Go Next
@@ -271,4 +271,4 @@ To review this implementation, you can find the complete pallet code below:
 
     [:octicons-arrow-right-24: Get Started](/tutorials/polkadot-sdk/parachains/zero-to-hero/pallet-unit-testing/)
 
-</div>
+</div>