adds until contains and travisyml

.travis.yml

@@ -0,0 +1,10 @@
+language: rust
+rust:
+  - stable
+  - beta
+  - nightly
+matrix:
+  allow_failures:
+    - rust: nightly
+  fast_finish: true
+

README.md

@@ -39,6 +39,14 @@ Limited loops:
     ./hello.txt
     $ 
 
+Looping until conditions are met:
+
+    $ loop 'echo $RANDOM' --until-contains "666"
+    11235
+    35925
+    666
+    $ 
+
 ## Installation
 
 Not published yet.
@@ -67,3 +75,4 @@ Iterators can be floats!
     2 1
     4 2
     [ .. ]
+

src/cli.yml

@@ -24,4 +24,10 @@ args:
         long: every
         value_name: every
         help: How often to iterate
+        takes_value: true
+    - until_contains:
+        short: c
+        long: until-contains
+        value_name: until_contains
+        help: Keep going until the output contains this string
         takes_value: true

src/main.rs

@@ -34,6 +34,15 @@ fn main() {
     // Delay time
     let every = parse_duration(matches.value_of("every").unwrap_or("1us")).unwrap();
 
+    // --until-*
+    let mut has_matched = false;
+    let mut has_until_contains = false;
+    let mut until_contains = "";
+    if matches.is_present("until_contains"){
+    	has_until_contains = true;
+    	until_contains = matches.value_of("until_contains").unwrap();
+    }
+
     // Counters
     let mut count = 0.0;
     let mut adjusted_count = 0.0;
@@ -46,6 +55,7 @@ fn main() {
     // Executor/readers
     let mut executor;
     let mut buf_reader;
+    let mut line;
 
     while count < num {
 
@@ -57,8 +67,19 @@ fn main() {
         buf_reader = BufReader::new(executor);
 
         // Print the results
-        for (_i, line) in buf_reader.lines().enumerate() {
-            println!("{}", line.unwrap());
+        for (_i, rline) in buf_reader.lines().enumerate() {
+        	line = rline.unwrap();
+            println!("{}", line);
+            if has_until_contains{
+            	if line.contains(until_contains){
+            		has_matched=true;
+            	}
+            }
+        }
+
+        // Finish if we matched
+        if has_matched {
+        	return;
         }
 
         // Increment counters