Add FlashDataBuilder

Author: bugadani

CHANGELOG.md

@@ -31,7 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed a missed `flush` call that may be causing communication errors (#521)
 
 ### Changed
-- Created `FlashData` and `FlashSettings` structs to reduce number of input arguments in some functions (#512)
+- Created `FlashData`, `FlashDataBuilder` and `FlashSettings` structs to reduce number of input arguments in some functions (#512, #566)
 - `espflash` will now exit with an error if `defmt` is selected but not usable (#524)
 
 ### Removed

espflash/src/flasher/mod.rs

@@ -272,6 +272,7 @@ impl FlashSettings {
             freq: None,
         }
     }
+
     pub fn new(
         mode: Option<FlashMode>,
         size: Option<FlashSize>,
@@ -281,6 +282,93 @@ impl FlashSettings {
     }
 }
 
+/// Builder interface to create [`FlashData`] objects.
+pub struct FlashDataBuilder<'a> {
+    bootloader_path: Option<&'a Path>,
+    partition_table_path: Option<&'a Path>,
+    partition_table_offset: Option<u32>,
+    image_format: Option<ImageFormatKind>,
+    target_app_partition: Option<String>,
+    flash_settings: FlashSettings,
+    min_chip_rev: u16,
+}
+
+impl<'a> Default for FlashDataBuilder<'a> {
+    fn default() -> Self {
+        Self {
+            bootloader_path: Default::default(),
+            partition_table_path: Default::default(),
+            partition_table_offset: Default::default(),
+            image_format: Default::default(),
+            target_app_partition: Default::default(),
+            flash_settings: FlashSettings::default(),
+            min_chip_rev: Default::default(),
+        }
+    }
+}
+
+impl<'a> FlashDataBuilder<'a> {
+    /// Creates a new [`FlashDataBuilder`] object.
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    /// Sets the bootloader path.
+    pub fn with_bootloader(mut self, bootloader_path: &'a Path) -> Self {
+        self.bootloader_path = Some(bootloader_path);
+        self
+    }
+
+    /// Sets the partition table path.
+    pub fn with_partition_table(mut self, partition_table_path: &'a Path) -> Self {
+        self.partition_table_path = Some(partition_table_path);
+        self
+    }
+
+    /// Sets the partition table offset.
+    pub fn with_partition_table_offset(mut self, partition_table_offset: u32) -> Self {
+        self.partition_table_offset = Some(partition_table_offset);
+        self
+    }
+
+    /// Sets the image format.
+    pub fn with_image_format(mut self, image_format: ImageFormatKind) -> Self {
+        self.image_format = Some(image_format);
+        self
+    }
+
+    /// Sets the label of the target app partition.
+    pub fn with_target_app_partition(mut self, target_app_partition: String) -> Self {
+        self.target_app_partition = Some(target_app_partition);
+        self
+    }
+
+    /// Sets the flash settings.
+    pub fn with_flash_settings(mut self, flash_settings: FlashSettings) -> Self {
+        self.flash_settings = flash_settings;
+        self
+    }
+
+    /// Sets the minimum chip revision.
+    pub fn with_min_chip_rev(mut self, min_chip_rev: u16) -> Self {
+        self.min_chip_rev = min_chip_rev;
+        self
+    }
+
+    /// Builds a [`FlashData`] object.
+    pub fn build(self) -> Result<FlashData> {
+        FlashData::new(
+            self.bootloader_path,
+            self.partition_table_path,
+            self.partition_table_offset,
+            self.image_format,
+            self.target_app_partition,
+            self.flash_settings,
+            self.min_chip_rev,
+        )
+    }
+}
+
 /// Flash data and configuration
 #[derive(Debug, Clone)]
 #[non_exhaustive]
@@ -308,7 +396,7 @@ impl FlashData {
         // specified path.
         let bootloader = if let Some(path) = bootloader {
             let path = fs::canonicalize(path).into_diagnostic()?;
-            let data = fs::read(path).into_diagnostic()?;
+            let data: Vec<u8> = fs::read(path).into_diagnostic()?;
 
             Some(data)
         } else {