[EC203][Java] Detect unoptimized image format

RULES.md

@@ -66,7 +66,7 @@ Some are applicable for different technologies.
 | EC86     | GC.Collect should not be called                               | In most cases, the cost of calling GC.Collect far outweighs the benefits                                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                         | 🚫   | 🚫  | 🚫 | 🚫     | 🚫   | ✅  | 🚫   |
 | EC87     | Use collection indexer                                        | Collection indexers should be used instead of Linq, when available                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                         | 🚫   | 🚫  | 🚫 | 🚫     | 🚫   | ✅  | 🚫   |
 | EC88     | Dispose resource asynchronously                               | Resources that implement `IAsyncDisposable` should be disposed asynchronously                                                                                                                                                                                                                                                                                                                                                |                                                                                                                                                                         | 🚫   | 🚫  | 🚫 | 🚫     | 🚫   | ✅  | 🚫   |
-| EC203    | Detect unoptimized file formats                               | When it is possible, to use svg format image over other image format                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                         | 🚀   | 🚀  | 🚀 | ✅      | 🚀   | 🚀 | 🚫   |
+| EC203    | Detect unoptimized file formats                               | When it is possible, to use svg format image over other image format                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                         | ✅   | 🚀  | 🚀 | ✅      | 🚀   | 🚀 | 🚫   |
 | EC404    | Avoid list comprehension in iterations                        | Use generator comprehension instead of list comprehension in for loop declaration                                                                                                                                                                                                                                                                                                                                            |                                                                                                                                                                         | 🚫   | 🚫  | 🚫 | ✅      | 🚫   | 🚫 | 🚫   |
 |          | Use official social media sharing buttons                     | These JavaScript plugins are very resource-intensive: to work, they require a large number of requests and download heavy files. It is better to prefer direct links.                                                                                                                                                                                                                                                        | [cnumr best practices (3rd edition) BP_019](https://github.com/cnumr/best-practices/blob/main/chapters/BP_019_fr.md)                                                    | 🚫   | 🚫  | 🚀 | 🚫     | 🚫   | 🚫 | 🚀   |
 |          | Non-grouped similar CSS declarations                          | When multiple Document Object Model (DOM) elements have common CSS properties, declare them together in the same style sheet. This method reduces the weight of CSS.                                                                                                                                                                                                                                                         | [cnumr best practices (3rd edition) BP_025](https://github.com/cnumr/best-practices/blob/main/chapters/BP_025_fr.md)                                                    | 🚫   | 🚫  | 🚧 | 🚫     | 🚫   | 🚫 | 🚫   |

ecocode-rules-specifications/src/main/rules/EC203/java/EC203.asciidoc

@@ -0,0 +1,78 @@
+If possible, the utilisation of svg image format (or `<svg/>` html tag) is recommended over other image format.
+
+Because SVGs are generally smaller than other image format, they’re less taxing on your server despite needing to render on load.
+
+When to use SVG :
+
+- Your image is used for decorative website graphics, logos, icons, graphs and diagrams, and other simple images.
+- You image require animation.
+- You image need to be responsive and scale without lack of quality.
+
+Some advantages of using SVG:
+
+- SVGs are scalable and will render pixel-perfect at any resolution whereas JPEGs, PNGs and GIFs will not.
+- SVGs are vector images and therefore are usually much smaller in file-size than bitmap-based images.
+- SVGs can be embedded into the HTML which means they can be cached, edited directly using CSS and indexed for greater accessibility.
+- SVGs can be animated directly or by using CSS or JavaScript making it easy for web designers to add interactivity to a site.
+
+## Noncompliant Code Example
+
+```
+img_jpg = "image.jpg"
+```
+
+## Compliant Solution
+
+```
+img_svg = "image.svg"
+```
+
+## Noncompliant Code Example
+
+```
+public void foo() {
+    // ...
+    image_format = testImage("image.jpg")
+    // ...
+}
+```
+
+## Compliant Solution
+
+```
+public void foo() {
+    // ...
+    image_format = testImage("image.svg")
+    // ...
+}
+```
+
+## Noncompliant Code Example
+
+```
+public void foo() {
+    // ...
+    return '<html><img src="xx/xx/image.bmp"></html>'
+    // ...
+}
+```
+
+## Compliant Solution
+
+```
+public void foo() {
+    // ...
+    return '<html><img src="xx/xx/image.svg"></html>'
+    // ...
+}
+```
+
+Or
+
+```
+ public void foo() {
+    // ...
+    return ('<html><svg width="100" height="100"><circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow"/></svg></html>')
+    // ...
+}
+```

ecocode-rules-specifications/src/main/rules/EC203/python/EC203.asciidoc

@@ -30,49 +30,48 @@ img_svg = "image.svg"
 ## Noncompliant Code Example
 
 ```
-public void foo() {
-    // ...
+def foo() :
+    # ...
     image_format = testImage("image.jpg")
-    // ...
-}
+    # ...
 ```
 
 ## Compliant Solution
 
 ```
-public void foo() {
-    // ...
+def foo() :
+    # ...
     image_format = testImage("image.svg")
-    // ...
+    # ...
 }
 ```
 
 ## Noncompliant Code Example
 
 ```
-public void foo() {
-    // ...
+def foo() :
+    # ...
     return '<html><img src="xx/xx/image.bmp"></html>'
-    // ...
+    # ...
 }
 ```
 
 ## Compliant Solution
 
 ```
-public void foo() {
-    // ...
+def foo() :
+    # ...
     return '<html><img src="xx/xx/image.svg"></html>'
-    // ...
+    # ...
 }
 ```
 
 Or
 
 ```
- public void foo() {
-    // ...
+def foo() :
+    # ...
     return ('<html><svg width="100" height="100"><circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow"/></svg></html>')
-    // ...
+    # ...
 }
 ```