From 84507dd361f4c1ba37bfdb7005714bb817afb6b0 Mon Sep 17 00:00:00 2001
From: Uy Ha <8091245+uyha@users.noreply.github.com>
Date: Mon, 4 Apr 2022 15:17:18 -0700
Subject: [PATCH] feat(args)!: prefix environment variables with `GIT_CLIFF_`
 (#76)

* Prefix environment variable with `GIT_CLIFF_`

* Update README.md

* Format file
---
 README.md             | 20 +++++++++---------
 git-cliff/src/args.rs | 47 ++++++++++++++++++++++++++++---------------
 2 files changed, 41 insertions(+), 26 deletions(-)

diff --git a/README.md b/README.md
index 678454ff32..526aaa0041 100644
--- a/README.md
+++ b/README.md
@@ -156,16 +156,16 @@ git-cliff [FLAGS] [OPTIONS] [--] [RANGE]
 **Options:**
 
 ```
--c, --config <PATH>                Sets the configuration file [env: CONFIG=] [default: cliff.toml]
--w, --workdir <PATH>               Sets the working directory [env: WORKDIR=]
--r, --repository <PATH>            Sets the git repository [env: REPOSITORY=]
-    --include-path <PATTERN>...    Sets the path to include related commits [env: INCLUDE_PATH=]
-    --exclude-path <PATTERN>...    Sets the path to exclude related commits [env: EXCLUDE_PATH=]
-    --with-commit <MSG>...         Sets custom commit messages to include in the changelog [env: WITH_COMMIT=]
--p, --prepend <PATH>               Prepends entries to the given changelog file [env: PREPEND=]
--o, --output <PATH>                Writes output to the given file [env: OUTPUT=]
--t, --tag <TAG>                    Sets the tag for the latest version [env: TAG=]
--b, --body <TEMPLATE>              Sets the template for the changelog body [env: TEMPLATE=]
+-c, --config <PATH>                Sets the configuration file [env: GIT_CLIFF_CONFIG=] [default: cliff.toml]
+-w, --workdir <PATH>               Sets the working directory [env: GIT_CLIFF_WORKDIR=]
+-r, --repository <PATH>            Sets the git repository [env: GIT_CLIFF_REPOSITORY=]
+    --include-path <PATTERN>...    Sets the path to include related commits [env: GIT_CLIFF_INCLUDE_PATH=]
+    --exclude-path <PATTERN>...    Sets the path to exclude related commits [env: GIT_CLIFF_EXCLUDE_PATH=]
+    --with-commit <MSG>...         Sets custom commit messages to include in the changelog [env: GIT_CLIFF_WITH_COMMIT=]
+-p, --prepend <PATH>               Prepends entries to the given changelog file [env: GIT_CLIFF_PREPEND=]
+-o, --output <PATH>                Writes output to the given file [env: GIT_CLIFF_OUTPUT=]
+-t, --tag <TAG>                    Sets the tag for the latest version [env: GIT_CLIFF_TAG=]
+-b, --body <TEMPLATE>              Sets the template for the changelog body [env: GIT_CLIFF_TEMPLATE=]
 -s, --strip <PART>                 Strips the given parts from the changelog [possible values: header, footer, all]
     --sort <SORT>                  Sets sorting of the commits inside sections [default: oldest] [possible values: oldest, newest]
 ```
diff --git a/git-cliff/src/args.rs b/git-cliff/src/args.rs
index 64945705bf..ef9a821b9e 100644
--- a/git-cliff/src/args.rs
+++ b/git-cliff/src/args.rs
@@ -38,43 +38,58 @@ pub struct Opt {
 	#[clap(short, long, parse(from_occurrences), alias = "debug", help_heading = Some("FLAGS"))]
 	pub verbose:      u8,
 	/// Sets the configuration file.
-	#[clap(
-		short,
-		long,
-		env,
-		value_name = "PATH",
-		default_value = DEFAULT_CONFIG,
-	)]
+	#[clap(short, long, env = "GIT_CLIFF_CONFIG", value_name = "PATH", default_value = DEFAULT_CONFIG)]
 	pub config:       PathBuf,
 	/// Sets the working directory.
-	#[clap(short, long, env, value_name = "PATH")]
+	#[clap(short, long, env = "GIT_CLIFF_WORKDIR", value_name = "PATH")]
 	pub workdir:      Option<PathBuf>,
 	/// Sets the git repository.
-	#[clap(short, long, env, value_name = "PATH")]
+	#[clap(short, long, env = "GIT_CLIFF_REPOSITORY", value_name = "PATH")]
 	pub repository:   Option<PathBuf>,
 	/// Sets the path to include related commits.
-	#[clap(long, env, value_name = "PATTERN", multiple_values = true)]
+	#[clap(
+		long,
+		env = "GIT_CLIFF_INCLUDE_PATH",
+		value_name = "PATTERN",
+		multiple_values = true
+	)]
 	pub include_path: Option<Vec<Pattern>>,
 	/// Sets the path to exclude related commits.
-	#[clap(long, env, value_name = "PATTERN", multiple_values = true)]
+	#[clap(
+		long,
+		env = "GIT_CLIFF_EXCLUDE_PATH",
+		value_name = "PATTERN",
+		multiple_values = true
+	)]
 	pub exclude_path: Option<Vec<Pattern>>,
 	/// Sets custom commit messages to include in the changelog.
-	#[clap(long, env, value_name = "MSG", multiple_values = true)]
+	#[clap(
+		long,
+		env = "GIT_CLIFF_WITH_COMMIT",
+		value_name = "MSG",
+		multiple_values = true
+	)]
 	pub with_commit:  Option<Vec<String>>,
 	/// Prepends entries to the given changelog file.
-	#[clap(short, long, env, value_name = "PATH")]
+	#[clap(short, long, env = "GIT_CLIFF_PREPEND", value_name = "PATH")]
 	pub prepend:      Option<PathBuf>,
 	/// Writes output to the given file.
-	#[clap(short, long, env, value_name = "PATH")]
+	#[clap(short, long, env = "GIT_CLIFF_OUTPUT", value_name = "PATH")]
 	pub output:       Option<PathBuf>,
 	/// Sets the tag for the latest version.
-	#[clap(short, long, env, value_name = "TAG", allow_hyphen_values = true)]
+	#[clap(
+		short,
+		long,
+		env = "GIT_CLIFF_TAG",
+		value_name = "TAG",
+		allow_hyphen_values = true
+	)]
 	pub tag:          Option<String>,
 	/// Sets the template for the changelog body.
 	#[clap(
 		short,
 		long,
-		env = "TEMPLATE",
+		env = "GIT_CLIFF_TEMPLATE",
 		value_name = "TEMPLATE",
 		allow_hyphen_values = true
 	)]