libimagentryfilter: Move from error-chain to failure

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

lib/entry/libimagentryfilter/Cargo.toml

@@ -26,10 +26,12 @@ log = "0.4.0"
 regex = "1"
 semver = "0.9"
 toml = "0.4"
-toml-query = "0.7"
-error-chain = "0.12"
+toml-query = { git = "https://github.com/matthiasbeyer/toml-query", branch = "failure" }
+failure        = "0.1"
+failure_derive = "0.1"
 
 libimagstore    = { version = "0.9.0", path = "../../../lib/core/libimagstore" }
+libimagerror    = { version = "0.9.0", path = "../../../lib/core/libimagerror" }
 libimagentrytag = { version = "0.9.0", path = "../../../lib/entry/libimagentrytag" }
 
 [dependencies.clap]

lib/entry/libimagentryfilter/src/builtin/header/field_eq.rs

@@ -23,8 +23,9 @@ use builtin::header::field_path::FieldPath;
 use builtin::header::field_predicate::FieldPredicate;
 use builtin::header::field_predicate::Predicate;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 use toml::Value;
 
@@ -56,7 +57,7 @@ impl FieldEq {
 }
 
 impl FailableFilter<Entry> for FieldEq {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         self.filter.filter(e)

lib/entry/libimagentryfilter/src/builtin/header/field_exists.rs

@@ -21,8 +21,9 @@ use libimagstore::store::Entry;
 
 use toml_query::read::TomlValueReadExt;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 use builtin::header::field_path::FieldPath;
 
@@ -41,10 +42,13 @@ impl FieldExists {
 }
 
 impl FailableFilter<Entry> for FieldExists {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
-        e.get_header().read(&self.header_field_path[..]).map_err(FE::from).map(|o| o.is_some())
+        e.get_header()
+            .read(&self.header_field_path[..])
+            .map_err(Error::from)
+            .map(|o| o.is_some())
     }
 
 }

lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs

@@ -26,8 +26,9 @@ use builtin::header::field_path::FieldPath;
 use builtin::header::field_predicate::FieldPredicate;
 use builtin::header::field_predicate::Predicate;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 struct EqGrep{
     regex: Regex
@@ -60,7 +61,7 @@ impl FieldGrep {
 }
 
 impl FailableFilter<Entry> for FieldGrep {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         self.filter.filter(e)

lib/entry/libimagentryfilter/src/builtin/header/field_gt.rs

@@ -23,8 +23,9 @@ use builtin::header::field_path::FieldPath;
 use builtin::header::field_predicate::FieldPredicate;
 use builtin::header::field_predicate::Predicate;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 use toml::Value;
 
@@ -72,7 +73,7 @@ impl FieldGt {
 }
 
 impl FailableFilter<Entry> for FieldGt {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         self.filter.filter(e)

lib/entry/libimagentryfilter/src/builtin/header/field_isempty.rs

@@ -22,8 +22,9 @@ use toml_query::read::TomlValueReadExt;
 
 use builtin::header::field_path::FieldPath;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 use toml::Value;
 
@@ -42,7 +43,7 @@ impl FieldIsEmpty {
 }
 
 impl FailableFilter<Entry> for FieldIsEmpty {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         Ok(e

lib/entry/libimagentryfilter/src/builtin/header/field_istype.rs

@@ -23,8 +23,9 @@ use builtin::header::field_path::FieldPath;
 use builtin::header::field_predicate::FieldPredicate;
 use builtin::header::field_predicate::Predicate;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 use toml::Value;
 
@@ -81,7 +82,7 @@ impl FieldIsType {
 }
 
 impl FailableFilter<Entry> for FieldIsType {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         self.filter.filter(e)

lib/entry/libimagentryfilter/src/builtin/header/field_lt.rs

@@ -23,8 +23,9 @@ use builtin::header::field_path::FieldPath;
 use builtin::header::field_predicate::FieldPredicate;
 use builtin::header::field_predicate::Predicate;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 use toml::Value;
 
@@ -72,7 +73,7 @@ impl FieldLt {
 }
 
 impl FailableFilter<Entry> for FieldLt {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         self.filter.filter(e)

lib/entry/libimagentryfilter/src/builtin/header/field_predicate.rs

@@ -24,8 +24,9 @@ use toml::Value;
 
 use builtin::header::field_path::FieldPath;
 use filters::failable::filter::FailableFilter;
-use error::Result;
-use error::FilterError as FE;
+
+use failure::Fallible as Result;
+use failure::Error;
 
 pub trait Predicate {
     fn evaluate(&self, &Value) -> bool;
@@ -53,7 +54,7 @@ impl<P: Predicate> FieldPredicate<P> {
 }
 
 impl<P: Predicate> FailableFilter<Entry> for FieldPredicate<P> {
-    type Error = FE;
+    type Error = Error;
 
     fn filter(&self, e: &Entry) -> Result<bool> {
         Ok(e.get_header()

lib/entry/libimagentryfilter/src/error.rs

@@ -1,34 +0,0 @@
-//
-// imag - the personal information management suite for the commandline
-// Copyright (C) 2015-2018 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
-//
-
-error_chain! {
-
-    types {
-        FilterError, FilterErrorKind, ResultExt, Result;
-    }
-
-    foreign_links {
-        TomlQueryError(::toml_query::error::Error);
-    }
-
-    errors {
-    }
-
-}
-

lib/entry/libimagentryfilter/src/lib.rs

@@ -38,16 +38,16 @@ extern crate regex;
 extern crate semver;
 extern crate toml;
 extern crate toml_query;
-#[macro_use] extern crate error_chain;
+extern crate failure;
 
 extern crate libimagstore;
 extern crate libimagentrytag;
+extern crate libimagerror;
 
 // core functionality modules of the crate,
 // these depend only on libimagstore
 
 pub mod builtin;
-pub mod error;
 
 // extended functionality of the crate
 // these depend on other internal libraries than libimagstore and use the upper core modules for