From 1d82384e827aebf3ed6dd1619bc1efd347499ed8 Mon Sep 17 00:00:00 2001
From: Sebastien Rousseau <sebastienrousseau@users.noreply.github.com>
Date: Mon, 25 Mar 2024 17:50:04 +0000
Subject: [PATCH] feat(libmake): :recycle: added new utility_macros and
 simplifying interface.rs

---
 src/interface.rs             | 85 ++++++++++--------------------------
 src/macros/mod.rs            |  4 ++
 src/macros/utility_macros.rs | 32 ++++++++++++++
 3 files changed, 60 insertions(+), 61 deletions(-)
 create mode 100644 src/macros/utility_macros.rs

diff --git a/src/interface.rs b/src/interface.rs
index 6bc43c9..fae9ae8 100644
--- a/src/interface.rs
+++ b/src/interface.rs
@@ -10,6 +10,7 @@ use std::{
 };
 
 use super::generator::FileGenerationParams;
+use crate::macro_replace_placeholder;
 
 /// Replaces placeholders in a template file with values from the provided parameters
 /// and writes the result to an output file.
@@ -37,70 +38,32 @@ pub fn replace_placeholders(
     let tpl_reader = BufReader::new(tpl);
     let mut output = File::create(output_file)?;
     let tpl_lines = tpl_reader.lines();
+
     for line in tpl_lines {
         let line = line?;
-        let replaced_line = line
-            .replace(
-                "{author}",
-                params.author.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{build}",
-                params.build.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{categories}",
-                params.categories.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{description}",
-                params.description.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{documentation}",
-                params.documentation.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{edition}",
-                params.edition.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{email}",
-                params.email.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{homepage}",
-                params.homepage.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{keywords}",
-                params.keywords.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{license}",
-                params.license.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{name}",
-                params.name.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{repository}",
-                params.repository.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{rustversion}",
-                params.rustversion.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{version}",
-                params.version.as_ref().unwrap_or(&String::new()),
-            )
-            .replace(
-                "{website}",
-                params.website.as_ref().unwrap_or(&String::new()),
-            );
+        let replaced_line = macro_replace_placeholder!(
+            line,
+            params,
+            author,
+            build,
+            categories,
+            description,
+            documentation,
+            edition,
+            email,
+            homepage,
+            keywords,
+            license,
+            name,
+            output,
+            readme,
+            repository,
+            rustversion,
+            version,
+            website
+        );
         writeln!(output, "{replaced_line}")?;
     }
+
     Ok(())
 }
diff --git a/src/macros/mod.rs b/src/macros/mod.rs
index 2334a82..ddd93b2 100644
--- a/src/macros/mod.rs
+++ b/src/macros/mod.rs
@@ -8,3 +8,7 @@ pub mod generator_macros;
 
 /// The `log_macros` module contains macros related to logging messages at various log levels and formats.
 pub mod log_macros;
+
+/// The `utility_macros` module contains utility macros for common tasks such as
+/// replacing placeholders in a line with values from parameters.
+pub mod utility_macros;
diff --git a/src/macros/utility_macros.rs b/src/macros/utility_macros.rs
new file mode 100644
index 0000000..fbffd67
--- /dev/null
+++ b/src/macros/utility_macros.rs
@@ -0,0 +1,32 @@
+// Copyright notice and licensing information.
+// These lines indicate the copyright of the software and its licensing terms.
+// SPDX-License-Identifier: Apache-2.0 OR MIT indicates dual licensing under Apache 2.0 or MIT licenses.
+// Copyright © 2024 LibMake. All rights reserved.
+
+/// Replaces placeholders in a given line with corresponding values from the provided parameters.
+///
+/// # Arguments
+///
+/// * `line` - The line containing placeholders to be replaced.
+/// * `params` - The parameters containing values to replace the placeholders.
+/// * `$($field:ident),+` - Identifiers representing the fields in `params` to be replaced.
+///
+/// # Returns
+///
+/// The line with placeholders replaced by their corresponding values.
+///
+#[macro_export]
+macro_rules! macro_replace_placeholder {
+    ($line:expr, $params:expr, $($field:ident),+) => {
+        {
+            let mut line = $line;
+            $(
+                line = line.replace(
+                    concat!("{", stringify!($field), "}"),
+                    &$params.$field.as_deref().unwrap_or(""),
+                );
+            )+
+            line
+        }
+    };
+}