feat: script to generate java configs

Signed-off-by: jogerj <[email protected]>

Author: jogerj

minify-html-java/src/main/java/in/wilsonl/minifyhtml/Configuration.java

@@ -16,6 +16,7 @@
 )
 @Value
 public class Configuration {
+    /* BEGIN FIELD NAMES */
     boolean allowNoncompliantUnquotedAttributeValues;
     boolean allowOptimalEntities;
     boolean allowRemovingSpacesBetweenAttributes;
@@ -31,4 +32,5 @@ public class Configuration {
     boolean preserveChevronPercentTemplateSyntax;
     boolean removeBangs;
     boolean removeProcessingInstructions;
+    /* END FIELD NAMES */
 }

minify-html-java/src/main/rust/lib.rs

@@ -11,6 +11,7 @@ fn build_cfg(env: &JNIEnv, obj: &JObject) -> Cfg {
   #[rustfmt::skip]
   // This is a statement because "attributes on expressions are experimental".
   let cfg = Cfg {
+    // BEGIN CONFIGURATION FIELDS
     allow_noncompliant_unquoted_attribute_values: env.call_method(*obj, "getAllowNoncompliantUnquotedAttributeValues", "()Z", &[]).unwrap().z().unwrap(),
     allow_optimal_entities: env.call_method(*obj, "getAllowOptimalEntities", "()Z", &[]).unwrap().z().unwrap(),
     allow_removing_spaces_between_attributes: env.call_method(*obj, "getAllowRemovingSpacesBetweenAttributes", "()Z", &[]).unwrap().z().unwrap(),
@@ -26,6 +27,7 @@ fn build_cfg(env: &JNIEnv, obj: &JObject) -> Cfg {
     preserve_chevron_percent_template_syntax: env.call_method(*obj, "getPreserveChevronPercentTemplateSyntax", "()Z", &[]).unwrap().z().unwrap(),
     remove_bangs: env.call_method(*obj, "getRemoveBangs", "()Z", &[]).unwrap().z().unwrap(),
     remove_processing_instructions: env.call_method(*obj, "getRemoveProcessingInstructions", "()Z", &[]).unwrap().z().unwrap(),
+    // END CONFIGURATION FIELDS
   };
   cfg
 }

minify-html-java/update-java.sh

@@ -0,0 +1,99 @@
+#!/bin/bash
+
+# Configuration paths
+RUST_CFG_FILE="../minify-html/src/cfg/mod.rs"
+JAVA_CONFIG_FILE="src/main/java/in/wilsonl/minifyhtml/Configuration.java"
+RUST_LIB_FILE="src/main/rust/lib.rs"
+
+# Function to convert snake_case to camelCase
+snake_to_camel() {
+    echo "$1" | sed -r 's/_([a-z])/\U\1/g'
+}
+
+# Function to capitalize first letter
+capitalize() {
+    echo "$(tr '[:lower:]' '[:upper:]' <<< ${1:0:1})${1:1}"
+}
+
+echo "Extracting fields from Rust configuration..."
+
+# Extract field names using grep and sed
+rust_fields=$(grep -oP '^\s*pub \K[a-zA-Z0-9_]+(?=: bool,?\s*$)' "$RUST_CFG_FILE")
+
+if [ -z "$rust_fields" ]; then
+    echo "No boolean fields found in $RUST_CFG_FILE"
+    exit 1
+fi
+
+echo "Found fields:"
+while IFS= read -r field; do
+    echo "  - $field"
+done <<< "$rust_fields"
+
+# Generate Java fields
+echo "Generating Java fields..."
+java_fields=""
+while IFS= read -r field; do
+    camel_field=$(snake_to_camel "$field")
+    java_fields="$java_fields    boolean $camel_field;\n"
+done <<< "$rust_fields"
+
+# Update Java configuration file between markers
+echo "Updating Java configuration file..."
+temp_java=$(mktemp)
+awk -v fields="$java_fields" '
+    /\/\* BEGIN FIELD NAMES \*\// {
+        print $0
+        printf "%s", fields
+        skip=1
+        next
+    }
+    /\/\* END FIELD NAMES \*\// {
+        print $0
+        skip=0
+        next
+    }
+    !skip {
+        print
+    }
+' "$JAVA_CONFIG_FILE" > "$temp_java"
+mv "$temp_java" "$JAVA_CONFIG_FILE"
+
+# Generate Rust mappings
+echo "Generating Rust JNI mappings..."
+rust_mappings=""
+
+while IFS= read -r field; do
+    camel_field=$(snake_to_camel "$field")
+    getter_name="get$(capitalize "$camel_field")"
+
+    mapping="    $field: env.call_method(*obj, \"$getter_name\", \"()Z\", &[]).unwrap().z().unwrap(),"
+
+    rust_mappings="$rust_mappings$mapping\n"
+done <<< "$rust_fields"
+
+# Update Rust lib file between markers
+echo "Updating Rust library file..."
+temp_rust=$(mktemp)
+awk -v mappings="$rust_mappings" '
+    /\/\/ BEGIN CONFIGURATION FIELDS/ {
+        print $0
+        printf "%s", mappings
+        skip=1
+        next
+    }
+    /\/\/ END CONFIGURATION FIELDS/ {
+        print $0
+        skip=0
+        next
+    }
+    !skip {
+        print
+    }
+' "$RUST_LIB_FILE" > "$temp_rust"
+mv "$temp_rust" "$RUST_LIB_FILE"
+
+echo "Code generation completed!"
+echo "Updated files:"
+echo "  - $JAVA_CONFIG_FILE"
+echo "  - $RUST_LIB_FILE"