Add wrapping functionality to StdoutViewer

lib/entry/libimagentryview/Cargo.toml

@@ -23,6 +23,7 @@ maintenance                       = { status     = "actively-developed" }
 log = "0.4.0"
 toml = "0.4"
 error-chain = "0.11"
+textwrap = "0.9"
 
 libimagrt        = { version = "0.8.0", path = "../../../lib/core/libimagrt" }
 libimagstore     = { version = "0.8.0", path = "../../../lib/core/libimagstore" }

lib/entry/libimagentryview/src/builtin/stdout.rs

@@ -27,6 +27,7 @@ use error::Result;
 pub struct StdoutViewer {
     view_header: bool,
     view_content: bool,
+    wrap_content: Option<usize>,
 }
 
 impl StdoutViewer {
@@ -35,9 +36,14 @@ impl StdoutViewer {
         StdoutViewer {
             view_header: view_header,
             view_content: view_content,
+            wrap_content: None,
         }
     }
 
+    pub fn wrap_at(&mut self, wrap: usize) {
+        self.wrap_content = Some(wrap)
+    }
+
 }
 
 impl Viewer for StdoutViewer {
@@ -48,7 +54,12 @@ impl Viewer for StdoutViewer {
         }
 
         if self.view_content {
-            println!("{}", e.get_content());
+            match self.wrap_content {
+                Some(limit) => ::textwrap::wrap(e.get_content(), limit).iter().for_each(|line| {
+                    println!("{}", line)
+                }),
+                None => println!("{}", e.get_content()),
+            }
         }
 
         Ok(())

lib/entry/libimagentryview/src/lib.rs

@@ -37,6 +37,7 @@
 
 extern crate toml;
 #[macro_use] extern crate error_chain;
+extern crate textwrap;
 
 extern crate libimagstore;
 extern crate libimagrt;