Merge pull request #1713 from fbrouille/g_file_set_attribute

Implement gio::File::set_attribute

Author: sdroege

gio/src/file.rs

@@ -6,7 +6,9 @@ use glib::{prelude::*, translate::*};
 
 #[cfg(feature = "v2_74")]
 use crate::FileIOStream;
-use crate::{ffi, Cancellable, File, FileCreateFlags, FileEnumerator, FileQueryInfoFlags};
+use crate::{
+    ffi, Cancellable, File, FileAttributeValue, FileCreateFlags, FileEnumerator, FileQueryInfoFlags,
+};
 
 impl File {
     #[cfg(feature = "v2_74")]
@@ -1111,6 +1113,35 @@ pub trait FileExtManual: IsA<File> + Sized {
 
         (fut, Box::pin(receiver))
     }
+
+    #[doc(alias = "g_file_set_attribute")]
+    fn set_attribute<'a>(
+        &self,
+        attribute: &str,
+        value: impl Into<FileAttributeValue<'a>>,
+        flags: FileQueryInfoFlags,
+        cancellable: Option<&impl IsA<Cancellable>>,
+    ) -> Result<(), glib::Error> {
+        unsafe {
+            let mut error = std::ptr::null_mut();
+            let value: FileAttributeValue<'a> = value.into();
+            let is_ok = ffi::g_file_set_attribute(
+                self.as_ref().to_glib_none().0,
+                attribute.to_glib_none().0,
+                value.type_().into_glib(),
+                value.as_ptr(),
+                flags.into_glib(),
+                cancellable.map(|p| p.as_ref()).to_glib_none().0,
+                &mut error,
+            );
+            debug_assert_eq!(is_ok == glib::ffi::GFALSE, !error.is_null());
+            if error.is_null() {
+                Ok(())
+            } else {
+                Err(from_glib_full(error))
+            }
+        }
+    }
 }
 
 impl<O: IsA<File>> FileExtManual for O {}

gio/src/file_attribute_value.rs

@@ -0,0 +1,126 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
+use glib::{
+    object::ObjectType,
+    translate::{IntoGlib, ToGlibPtr},
+};
+
+use crate::FileAttributeType;
+
+use std::ffi::CStr;
+
+#[derive(Debug)]
+pub struct FileAttributeValue<'a>(FileAttributeValueInner<'a>);
+
+impl From<&str> for FileAttributeValue<'_> {
+    fn from(value: &str) -> Self {
+        Self(FileAttributeValueInner::String(
+            ToGlibPtr::<*mut libc::c_char>::to_glib_none(value).1,
+        ))
+    }
+}
+
+impl<'a> From<&'a CStr> for FileAttributeValue<'a> {
+    fn from(value: &'a CStr) -> Self {
+        Self(FileAttributeValueInner::ByteString(value))
+    }
+}
+
+impl From<bool> for FileAttributeValue<'_> {
+    fn from(value: bool) -> Self {
+        Self(FileAttributeValueInner::Boolean(value.into_glib()))
+    }
+}
+
+impl From<u32> for FileAttributeValue<'_> {
+    fn from(value: u32) -> Self {
+        Self(FileAttributeValueInner::Uint32(value))
+    }
+}
+
+impl From<i32> for FileAttributeValue<'_> {
+    fn from(value: i32) -> Self {
+        Self(FileAttributeValueInner::Int32(value))
+    }
+}
+
+impl From<u64> for FileAttributeValue<'_> {
+    fn from(value: u64) -> Self {
+        Self(FileAttributeValueInner::Uint64(value))
+    }
+}
+
+impl From<i64> for FileAttributeValue<'_> {
+    fn from(value: i64) -> Self {
+        Self(FileAttributeValueInner::Int64(value))
+    }
+}
+
+impl<'a, T: AsRef<glib::Object>> From<&'a T> for FileAttributeValue<'a> {
+    fn from(value: &'a T) -> Self {
+        Self(FileAttributeValueInner::Object(value.as_ref()))
+    }
+}
+
+impl<'a> From<&'a [&str]> for FileAttributeValue<'a> {
+    fn from(value: &'a [&str]) -> Self {
+        Self(FileAttributeValueInner::Stringv(value.into()))
+    }
+}
+
+impl FileAttributeValue<'_> {
+    pub(crate) fn type_(&self) -> FileAttributeType {
+        self.0.type_()
+    }
+
+    pub(crate) fn as_ptr(&self) -> glib::ffi::gpointer {
+        self.0.as_ptr()
+    }
+}
+
+#[derive(Debug)]
+pub(crate) enum FileAttributeValueInner<'a> {
+    #[allow(dead_code)] // TODO remove this allow attribute when Pointer will be used by this crate
+    Pointer(FileAttributeType, glib::ffi::gpointer),
+    String(<&'a str as ToGlibPtr<'a, *mut libc::c_char>>::Storage),
+    ByteString(&'a CStr),
+    Boolean(glib::ffi::gboolean),
+    Uint32(u32),
+    Int32(i32),
+    Uint64(u64),
+    Int64(i64),
+    Object(&'a glib::Object),
+    Stringv(glib::StrV),
+}
+
+impl FileAttributeValueInner<'_> {
+    pub(crate) fn type_(&self) -> FileAttributeType {
+        match self {
+            Self::Pointer(type_, _) => *type_,
+            Self::String(_) => FileAttributeType::String,
+            Self::ByteString(_) => FileAttributeType::ByteString,
+            Self::Boolean(_) => FileAttributeType::Boolean,
+            Self::Uint32(_) => FileAttributeType::Uint32,
+            Self::Int32(_) => FileAttributeType::Int32,
+            Self::Uint64(_) => FileAttributeType::Uint64,
+            Self::Int64(_) => FileAttributeType::Int64,
+            Self::Object(_) => FileAttributeType::Object,
+            Self::Stringv(_) => FileAttributeType::Stringv,
+        }
+    }
+
+    pub(crate) fn as_ptr(&self) -> glib::ffi::gpointer {
+        match self {
+            Self::Pointer(_, s) => *s,
+            Self::String(s) => s.as_ptr() as _,
+            Self::ByteString(s) => s.as_ptr() as _,
+            Self::Boolean(s) => s as *const i32 as _,
+            Self::Uint32(s) => s as *const u32 as _,
+            Self::Int32(s) => s as *const i32 as _,
+            Self::Uint64(s) => s as *const u64 as _,
+            Self::Int64(s) => s as *const i64 as _,
+            Self::Object(s) => s.as_ptr() as _,
+            Self::Stringv(s) => s.as_ptr() as _,
+        }
+    }
+}

gio/src/file_info.rs

@@ -7,7 +7,7 @@ use std::{
 
 use glib::{translate::*, StrV};
 
-use crate::{ffi, FileInfo};
+use crate::{ffi, FileAttributeValue, FileInfo};
 
 impl FileInfo {
     #[cfg_attr(feature = "v2_62", deprecated)]
@@ -71,4 +71,17 @@ impl FileInfo {
             });
         }
     }
+
+    #[doc(alias = "g_file_info_set_attribute")]
+    pub fn set_attribute<'a>(&self, attribute: &str, value: impl Into<FileAttributeValue<'a>>) {
+        unsafe {
+            let value: FileAttributeValue<'a> = value.into();
+            ffi::g_file_info_set_attribute(
+                self.to_glib_none().0,
+                attribute.to_glib_none().0,
+                value.type_().into_glib(),
+                value.as_ptr(),
+            );
+        }
+    }
 }

gio/src/lib.rs

@@ -49,6 +49,8 @@ pub use crate::file_attribute_info::FileAttributeInfo;
 mod file_attribute_info_list;
 mod file_attribute_matcher;
 pub use crate::file_attribute_matcher::FileAttributematcherIter;
+mod file_attribute_value;
+pub use file_attribute_value::FileAttributeValue;
 #[cfg(unix)]
 mod file_descriptor_based;
 #[cfg(unix)]