Add additional Logging level functions to the logging module

src/sdl2/log.rs

@@ -1,4 +1,5 @@
 use crate::sys;
+use std::convert::TryInto;
 use std::ffi::{CStr, CString};
 use std::ptr::null_mut;
 
@@ -42,6 +43,22 @@ impl Category {
             Category::Custom
         }
     }
+
+    fn into_ll(value: Category) -> u32 {
+        return match value {
+            Category::Application => sys::SDL_LogCategory::SDL_LOG_CATEGORY_APPLICATION as u32,
+            Category::Error => sys::SDL_LogCategory::SDL_LOG_CATEGORY_ERROR as u32,
+            Category::Assert => sys::SDL_LogCategory::SDL_LOG_CATEGORY_ASSERT as u32,
+            Category::System => sys::SDL_LogCategory::SDL_LOG_CATEGORY_SYSTEM as u32,
+            Category::Audio => sys::SDL_LogCategory::SDL_LOG_CATEGORY_AUDIO as u32,
+            Category::Video => sys::SDL_LogCategory::SDL_LOG_CATEGORY_VIDEO as u32,
+            Category::Render => sys::SDL_LogCategory::SDL_LOG_CATEGORY_RENDER as u32,
+            Category::Input => sys::SDL_LogCategory::SDL_LOG_CATEGORY_INPUT as u32,
+            Category::Test => sys::SDL_LogCategory::SDL_LOG_CATEGORY_TEST as u32,
+            Category::Custom => sys::SDL_LogCategory::SDL_LOG_CATEGORY_CUSTOM as u32,
+            Category::Unknown => sys::SDL_LogCategory::SDL_LOG_CATEGORY_APPLICATION as u32
+        }
+    }
 }
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
@@ -104,3 +121,79 @@ pub fn log(message: &str) {
         crate::sys::SDL_Log(message.as_ptr());
     }
 }
+
+/// Critical log function which takes as priority CRITICAL
+#[doc(alias = "SDL_LogCritical")]
+pub fn log_critical(message: &str, category: Category) {
+    log_with_category(message, category, sdl_log_critical);
+}
+
+/// Debug log function which takes as priority DEBUG
+#[doc(alias = "SDL_LogDebug")]
+pub fn log_debug(message: &str, category: Category) {
+    log_with_category(message, category, sdl_log_debug);
+}
+
+/// Error log function which takes as priority ERROR
+#[doc(alias = "SDL_LogError")]
+pub fn log_error(message: &str, category: Category) {
+    log_with_category(message, category, sdl_log_error);
+}
+
+/// Info log function which takes as priority INFO
+#[doc(alias = "SDL_LogInfo")]
+pub fn log_info(message: &str, category: Category) {
+    log_with_category(message, category, sdl_log_info);
+}
+
+/// Verbose log function which takes as priority VERBOSE
+#[doc(alias = "SDL_LogVerbose")]
+pub fn log_verbose(message: &str, category: Category) {
+    log_with_category(message, category, sdl_log_verbose);
+}
+
+/// Warn log function which takes as priority WARN
+#[doc(alias = "SDL_LogWarn")]
+pub fn log_warn(message: &str, category: Category) {
+    log_with_category(message, category, sdl_log_warn);
+}
+
+/// uses the sdl_log_func to log the message, when category cannot be converted, then Category: Application will be used
+fn log_with_category(message: &str, category: Category, sdl_log_func: unsafe fn(category: libc::c_int, fmt: *const libc::c_char)) {
+    let message = message.replace('%', "%%");
+    let message = CString::new(message).unwrap();
+    let uccategory =  Category::into_ll(category).try_into();
+    let ccategory = match uccategory {
+        Err(_) => Category::into_ll(Category::Application).try_into().unwrap(),
+        Ok(success) => success
+    };
+
+    unsafe {
+        sdl_log_func(ccategory, message.as_ptr());
+    }
+}
+
+unsafe fn sdl_log_critical(category: libc::c_int, fmt: *const libc::c_char){
+    crate::sys::SDL_LogCritical(category,fmt);
+}
+
+unsafe fn sdl_log_debug(category: libc::c_int, fmt: *const libc::c_char){
+    crate::sys::SDL_LogDebug(category,fmt);
+}
+
+unsafe fn sdl_log_error(category: libc::c_int, fmt: *const libc::c_char){
+    crate::sys::SDL_LogError(category,fmt);
+}
+
+unsafe fn sdl_log_info(category: libc::c_int, fmt: *const libc::c_char){
+    crate::sys::SDL_LogInfo(category,fmt);
+}
+
+
+unsafe fn sdl_log_verbose(category: libc::c_int, fmt: *const libc::c_char){
+    crate::sys::SDL_LogVerbose(category,fmt);
+}
+
+unsafe fn sdl_log_warn(category: libc::c_int, fmt: *const libc::c_char){
+    crate::sys::SDL_LogWarn(category,fmt);
+}