Reorganize code in subdirs

1 files changed, 350 insertions, 0 deletions

diff --git a/lib/etc/libimaginteraction/src/ask.rs b/lib/etc/libimaginteraction/src/ask.rs
new file mode 100644
index 00000000..2a393d0e
--- /dev/null
+++ b/lib/etc/libimaginteraction/src/ask.rs
@@ -0,0 +1,350 @@
+//
+// 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
+//
+
+// functions to ask the user for data, with crate:spinner
+
+use std::io::stdin;
+use std::io::BufRead;
+use std::io::BufReader;
+use std::result::Result as RResult;
+
+use error::InteractionError;
+use error::InteractionErrorKind;
+use result::Result;
+
+use regex::Regex;
+use ansi_term::Colour::*;
+use interactor::*;
+
+/// Ask the user for a Yes/No answer. Optionally provide a default value. If none is provided, this
+/// keeps loop{}ing
+pub fn ask_bool(s: &str, default: Option<bool>) -> bool {
+    ask_bool_(s, default, &mut BufReader::new(stdin()))
+}
+
+fn ask_bool_<R: BufRead>(s: &str, default: Option<bool>, input: &mut R) -> bool {
+    lazy_static! {
+        static ref R_YES: Regex = Regex::new(r"^[Yy](\n?)$").unwrap();
+        static ref R_NO: Regex  = Regex::new(r"^[Nn](\n?)$").unwrap();
+    }
+
+    loop {
+        ask_question(s, false);
+        if match default { Some(s) => s, _ => true } {
+            println!(" [Yn]: ");
+        } else {
+            println!(" [yN]: ");
+        }
+
+        let mut s = String::new();
+        let _     = input.read_line(&mut s);
+
+        if R_YES.is_match(&s[..]) {
+            return true
+        } else if R_NO.is_match(&s[..]) {
+            return false
+        } else if default.is_some() {
+            return default.unwrap();
+        }
+        // else again...
+    }
+}
+
+/// Ask the user for an unsigned number. Optionally provide a default value. If none is provided,
+/// this keeps loop{}ing
+pub fn ask_uint(s: &str, default: Option<u64>) -> u64 {
+    ask_uint_(s, default, &mut BufReader::new(stdin()))
+}
+
+fn ask_uint_<R: BufRead>(s: &str, default: Option<u64>, input: &mut R) -> u64 {
+    use std::str::FromStr;
+
+    loop {
+        ask_question(s, false);
+
+        let mut s = String::new();
+        let _     = input.read_line(&mut s);
+
+        let u : RResult<u64, _> = FromStr::from_str(&s[..]);
+        match u {
+            Ok(u)  => { return u; },
+            Err(_) => {
+                if default.is_some() {
+                    return default.unwrap();
+                } // else keep looping
+            }
+        }
+    }
+}
+
+/// Ask the user for a String.
+///
+/// If `permit_empty` is set to false, the default value will be returned if the user inserts an
+/// empty string.
+///
+/// If the `permit_empty` value is true, the `default` value is never returned.
+///
+/// If the `permit_multiline` is set to true, the `prompt` will be displayed before each input line.
+///
+/// If the `eof` parameter is `None`, the input ends as soon as there is an empty line input from
+/// the user. If the parameter is `Some(text)`, the input ends if the input line is equal to `text`.
+pub fn ask_string(s: &str,
+                  default: Option<String>,
+                  permit_empty: bool,
+                  permit_multiline: bool,
+                  eof: Option<&str>,
+                  prompt: &str)
+    -> String
+{
+    ask_string_(s,
+                default,
+                permit_empty,
+                permit_multiline,
+                eof,
+                prompt,
+                &mut BufReader::new(stdin()))
+}
+
+fn ask_string_<R: BufRead>(s: &str,
+                           default: Option<String>,
+                           permit_empty: bool,
+                           permit_multiline: bool,
+                           eof: Option<&str>,
+                           prompt: &str,
+                           input: &mut R)
+    -> String
+{
+    let mut v = vec![];
+    loop {
+        ask_question(s, true);
+        print!("{}", prompt);
+
+        let mut s = String::new();
+        let _     = input.read_line(&mut s);
+
+        if permit_multiline {
+            if permit_multiline && eof.map_or(false, |e| e == s) {
+                return v.join("\n");
+            }
+
+            if permit_empty || !v.is_empty() {
+                v.push(s);
+            }
+            print!("{}", prompt);
+        } else if s.is_empty() && permit_empty {
+            return s;
+        } else if s.is_empty() && !permit_empty {
+            if default.is_some() {
+                return default.unwrap();
+            } else {
+                continue;
+            }
+        } else {
+            return s;
+        }
+    }
+}
+
+pub fn ask_select_from_list(list: &[&str]) -> Result<String> {
+    pick_from_list(default_menu_cmd().as_mut(), list, "Selection: ")
+        .map_err(|e| InteractionError::new(InteractionErrorKind::Unknown, Some(Box::new(e))))
+}
+
+/// Helper function to print a imag question string. The `question` argument may not contain a
+/// trailing questionmark.
+///
+/// The `nl` parameter can be used to configure whether a newline character should be printed
+pub fn ask_question(question: &str, nl: bool) {
+    if nl {
+        println!("[imag]: {}?", Yellow.paint(question));
+    } else {
+        print!("[imag]: {}?", Yellow.paint(question));
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use std::io::BufReader;
+
+    use super::ask_bool_;
+    use super::ask_uint_;
+
+    #[test]
+    fn test_ask_bool_nodefault_yes() {
+        let question = "Is this true";
+        let default  = None;
+        let answers  = "\n\n\n\n\ny";
+
+        assert!(ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_nodefault_yes_nl() {
+        let question = "Is this true";
+        let default  = None;
+        let answers  = "\n\n\n\n\ny\n";
+
+        assert!(ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_nodefault_no() {
+        let question = "Is this true";
+        let default  = None;
+        let answers  = "n";
+
+        assert!(false == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_nodefault_no_nl() {
+        let question = "Is this true";
+        let default  = None;
+        let answers  = "n\n";
+
+        assert!(false == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_no() {
+        let question = "Is this true";
+        let default  = Some(false);
+        let answers  = "n";
+
+        assert!(false == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_no_nl() {
+        let question = "Is this true";
+        let default  = Some(false);
+        let answers  = "n\n";
+
+        assert!(false == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_yes() {
+        let question = "Is this true";
+        let default  = Some(true);
+        let answers  = "y";
+
+        assert!(true == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_yes_nl() {
+        let question = "Is this true";
+        let default  = Some(true);
+        let answers  = "y\n";
+
+        assert!(true == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_yes_answer_no() {
+        let question = "Is this true";
+        let default  = Some(true);
+        let answers  = "n";
+
+        assert!(false == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_no_answer_yes() {
+        let question = "Is this true";
+        let default  = Some(false);
+        let answers  = "y";
+
+        assert!(true == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_no_without_answer() {
+        let question = "Is this true";
+        let default  = Some(false);
+        let answers  = "\n";
+
+        assert!(false == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_bool_default_yes_without_answer() {
+        let question = "Is this true";
+        let default  = Some(true);
+        let answers  = "\n";
+
+        assert!(true == ask_bool_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_uint_nodefault() {
+        let question = "Is this 1";
+        let default  = None;
+        let answers  = "1";
+
+        assert!(1 == ask_uint_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_uint_default() {
+        let question = "Is this 1";
+        let default  = Some(1);
+        let answers  = "1";
+
+        assert!(1 == ask_uint_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_uint_default_2_input_1() {
+        let question = "Is this 1";
+        let default  = Some(2);
+        let answers  = "1";
+
+        assert!(1 == ask_uint_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_uint_default_2_noinput() {
+        let question = "Is this 1";
+        let default  = Some(2);
+        let answers  = "\n";
+
+        assert!(2 == ask_uint_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_uint_default_2_several_noinput() {
+        let question = "Is this 1";
+        let default  = Some(2);
+        let answers  = "\n\n\n\n";
+
+        assert!(2 == ask_uint_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+    #[test]
+    fn test_ask_uint_default_2_wrong_input() {
+        let question = "Is this 1";
+        let default  = Some(2);
+        let answers  = "\n\n\nasfb\nsakjf\naskjf\n-2";
+
+        assert!(2 == ask_uint_(question, default, &mut BufReader::new(answers.as_bytes())));
+    }
+
+}