Add first implementation

libimagentrydate/Cargo.toml

@@ -1,6 +1,30 @@
 [package]
 name = "libimagentrydate"
-version = "0.1.0"
+version = "0.3.0"
 authors = ["Matthias Beyer <mail@beyermatthias.de>"]
 
+description = "Library for the imag core distribution"
+
+keywords    = ["imag", "PIM", "personal", "information", "management"]
+readme      = "../README.md"
+license     = "LGPL-2.1"
+
+documentation = "https://matthiasbeyer.github.io/imag/imag_documentation/index.html"
+repository    = "https://github.com/matthiasbeyer/imag"
+homepage      = "http://imag-pim.org"
+
 [dependencies]
+chrono = "0.3"
+toml-query = "0.1"
+lazy_static = "0.2"
+toml = "0.4"
+
+[dependencies.libimagerror]
+path = "../libimagerror"
+
+[dependencies.libimagstore]
+path = "../libimagstore"
+
+[dependencies.libimagutil]
+path = "../libimagutil"
+

libimagentrydate/src/entrydate.rs

@@ -0,0 +1,100 @@
+//
+// imag - the personal information management suite for the commandline
+// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; version
+// 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+
+use chrono::naive::datetime::NaiveDateTime;
+use toml_query::delete::TomlValueDeleteExt;
+use toml_query::insert::TomlValueInsertExt;
+use toml_query::read::TomlValueReadExt;
+use toml::Value;
+
+use libimagstore::store::Entry;
+use libimagerror::into::IntoError;
+
+use error::DateErrorKind as DEK;
+use error::*;
+use result::Result;
+
+pub trait EntryDate {
+
+    fn delete_date(&mut self) -> Result<()>;
+    fn read_date(&self) -> Result<NaiveDateTime>;
+    fn set_date(&mut self, d: NaiveDateTime) -> Result<Option<Result<NaiveDateTime>>>;
+
+}
+
+lazy_static! {
+    static ref DATE_HEADER_LOCATION : String = String::from("date.value");
+    static ref DATE_FMT : &'static str       = "%Y-%m-%d %H:%M:%S";
+}
+
+impl EntryDate for Entry {
+
+    fn delete_date(&mut self) -> Result<()> {
+        self.get_header_mut()
+            .delete(&DATE_HEADER_LOCATION)
+            .map(|_| ())
+            .map_err_into(DEK::StoreWriteError)
+    }
+
+    fn read_date(&self) -> Result<NaiveDateTime> {
+        self.get_header()
+            .read(&DATE_HEADER_LOCATION)
+            .map_err_into(DEK::StoreReadError)
+            .and_then(|v| {
+                match v {
+                    &Value::String(ref s) => s.parse::<NaiveDateTime>()
+                        .map_err_into(DEK::DateTimeParsingError),
+                    _ => Err(DEK::DateHeaderFieldTypeError.into_error()),
+                }
+            })
+    }
+
+    /// Set a Date for this entry
+    ///
+    /// # Return value
+    ///
+    /// This function returns funny things, I know. But I find it more attractive to be explicit
+    /// what failed when here, instead of beeing nice to the user here.
+    ///
+    /// So here's a list how things are returned:
+    ///
+    /// - Err(_) if the inserting failed
+    /// - Ok(None) if the inserting succeeded and _did not replace an existing value_.
+    /// - Ok(Some(Ok(_))) if the inserting succeeded, but replaced an existing value which then got
+    /// parsed into a NaiveDateTime object
+    /// - Ok(Some(Err(_))) if the inserting succeeded, but replaced an existing value which then
+    /// got parsed into a NaiveDateTime object, where the parsing failed for some reason.
+    ///
+    fn set_date(&mut self, d: NaiveDateTime) -> Result<Option<Result<NaiveDateTime>>> {
+        let date = d.format(&DATE_FMT).to_string();
+
+        self.get_header_mut()
+            .insert(&DATE_HEADER_LOCATION, Value::String(date))
+            .map(|opt| opt.map(|stri| {
+                match stri {
+                    Value::String(ref s) => s.parse::<NaiveDateTime>()
+                                             .map_err_into(DEK::DateTimeParsingError),
+                    _ => Err(DEK::DateHeaderFieldTypeError.into_error()),
+                }
+            }))
+            .map_err_into(DEK::StoreWriteError)
+    }
+
+}
+

libimagentrydate/src/error.rs

@@ -0,0 +1,33 @@
+//
+// imag - the personal information management suite for the commandline
+// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; version
+// 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+
+generate_error_module!(
+    generate_error_types!(DateError, DateErrorKind,
+        StoreReadError      => "Store read error",
+        StoreWriteError     => "Store write error",
+
+        DateHeaderFieldTypeError => "Expected the header field in the entry to have type 'String', but have other type",
+        DateTimeParsingError => "Error parsing DateTime"
+    );
+);
+
+pub use self::error::DateError;
+pub use self::error::DateErrorKind;
+pub use self::error::MapErrInto;
+

libimagentrydate/src/lib.rs

@@ -1,6 +1,32 @@
-#[cfg(test)]
+//
-mod tests {
+// imag - the personal information management suite for the commandline
-    #[test]
+// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
-    fn it_works() {
+//
-    }
+// This library is free software; you can redistribute it and/or
-}
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; version
+// 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+
+#[macro_use] extern crate lazy_static;
+extern crate chrono;
+extern crate toml_query;
+extern crate toml;
+
+#[macro_use] extern crate libimagerror;
+extern crate libimagstore;
+extern crate libimagutil;
+
+pub mod entrydate;
+pub mod error;
+pub mod result;
+

libimagentrydate/src/result.rs

@@ -0,0 +1,25 @@
+//
+// imag - the personal information management suite for the commandline
+// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; version
+// 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+
+use std::result::Result as RResult;
+
+use error::DateError;
+
+pub type Result<T> = RResult<T, DateError>;
+