refact + add colorized

Cargo.toml

@@ -1,9 +1,9 @@
 [package]
 name = "ykre"
-version = "0.1.0"
+version = "0.2.0"
 authors = ["a-Sansara <dev]at[pluie]dot[org>"]
 edition = "2018"
-description = "Ykre is Yaml Kubernetes Resource Extractor"
+description = "Ykre stand for Yaml Kubernetes Resource Extractor"
 license = "MIT"
 readme = "README.md"
 keywords = ["cli", "yaml", "kubernetes", "kustomize"]
@@ -13,3 +13,4 @@ categories = ["command-line-utilities"]
 
 [dependencies]
 yaml-rust = "0.4"
+colored = "2"

README.md

@@ -3,15 +3,15 @@
 **Ykre** is a small cli program written in rust wich purpose is to extract from a list
 of yaml documents, documents matching a specified condition. **Ykre** goal is to find 
 specific Kubernetes Resource from the kustomize output.
-**Ykre** stands for **Y**aml **K**ubernetes **R**esources **E**ctractor.
+**Ykre** stands for **Y**aml **K**ubernetes **R**esources **E**xtractor.
 
 
 ## Install
 
 from a debian package :
 ``` 
-wget -q https://github.com/pluie-org/ykre/raw/master/dist/ykre_0.1.0_amd64.deb
-sudo apt install ./ykre_0.1.0_amd64.deb
+wget -q https://github.com/pluie-org/ykre/raw/master/dist/ykre_0.2.0_amd64.deb
+sudo apt install ./ykre_0.2.0_amd64.deb
 ```
 
 via Cargo

src/main.rs

@@ -1,29 +1,8 @@
 extern crate yaml_rust;
-pub mod ykre;
-
-use std::io;
-use std::panic;
-
-const PANIC_BYPASS_FILE    : &str = "src/ykre/pipin.rs";
-const PANIC_BYPASS_LINE    : u32  = 9;
+extern crate colored;
 
-fn main() -> io::Result<()> {
-
-    panic::set_hook(Box::new(|_info| {
-        let mut bypass :bool = false;
-        if let Some(location) = &_info.location() {
-            bypass = location.file() == PANIC_BYPASS_FILE && location.line() == PANIC_BYPASS_LINE;
-        }
-        if !bypass {
-            //~ println!("{:?}", &_info);
-            if let Some(s) = &_info.payload().downcast_ref::<&str>() {
-                if s.len() > 1 {
-                    println!("{}", s);
-                }
-            }
-        }
-    }));
+pub mod ykre;
 
-    ykre::run();
-    Ok(())
+fn main() -> std::io::Result<()> {
+    ykre::run()
 }

src/ykre.rs

@@ -1,56 +1,52 @@
 mod yaml;
 mod pipin;
 mod app;
+mod echo;
+mod color;
 
 pub use self::yaml::YamlDocument;
-pub use self::pipin::{spawn_stdin, sleep};
-pub use self::app::{run};
-
-const YKRE_LIMIT_ATTEMPT   : u64  = 900;
-const YKRE_SLEEP_START     : u64  = 50;
-const YKRE_SLEEP_DATA      : u64  = 1;
-const YKRE_SLEEP_NODATA    : u64  = 1;
-const YKRE_DEFAULT_DEF     : &str = "metadata.name";
-const YKRE_ERROR_NOTFOUND  : &str = r"
-  :: Ykre ::
-
-  error : no match found for specified pattern
-";
-const YKRE_ERROR_INVALID   : &str = r"
-  :: Ykre ::
-
-  error : invalid parameter. type ykre for usage
-";
-const YKRE_ERROR_NOPIPE    : &str = r"
-  :: Ykre ::
-
-  error : you must send data using pipe
-";
-const YKRE_HELP            : &str = r"
------------------------------------------------------------------------------------
- :: Ykre :: v0.1                                license : MIT - author : a-Sansara
------------------------------------------------------------------------------------
-
+pub use self::pipin::*;
+pub use self::echo::*;
+pub use self::color::*;
+pub use self::app::run;
+
+const BG                   : Rgb   = Rgb { r: 30, g: 85, b:125 };
+const CSEP                 : Rgb   = Rgb { r: 30, g: 85, b:125 };
+const CTITLE               : Rgb   = Rgb { r:255, g:220, b:190 };
+const CTITLESEP            : Rgb   = Rgb { r:255, g:175, b: 35 };
+const CKEY1                : Rgb   = Rgb { r: 23, g:141, b: 84 };
+const CVAL1                : Rgb   = Rgb { r:149, g:197, b:157 };
+const CKEY2                : Rgb   = Rgb { r:237, g:214, b:140 };
+const CVAL2                : Rgb   = Rgb { r:238, g:194, b: 55 };
+const CTEXT                : Rgb   = Rgb { r:190, g:162, b:216 };
+const CPROG                : Rgb   = Rgb { r:255, g:255, b:255 };
+const COPTSEP              : Rgb   = Rgb { r:255, g:151, b: 75 };
+//~ const COPT                 : Rgb   = Rgb { r: 23, g:141, b: 84 };
+const CARG                 : Rgb   = Rgb { r: 90, g:205, b:255 };
+const CUSAGE               : Rgb   = Rgb { r:238, g:194, b: 55 };
+const CSTR                 : Rgb   = Rgb { r: 66, g:135, b: 99 };
+const CCOM                 : Rgb   = Rgb { r:105, g:103, b:149 };
+const CERR                 : Rgb   = Rgb { r:175, g: 37, b: 21 };
+const CERRMSG              : Rgb   = Rgb { r:210, g: 99, b: 86 };
+
+const WIDTH                : usize = 82;
+const PANIC_BYPASS_LINE    : u32   = 9;
+const PANIC_BYPASS_FILE    : &str  = "src/ykre/pipin.rs";
+const YKRE_AUTHOR          : &str  = "a-Sansara";
+const YKRE_VERSION         : &str  = "0.2";
+const YKRE_LICENSE         : &str  = "MIT";
+const YKRE_NAME            : &str  = "Ykre";
+const YKRE_DEFAULT_DEF     : &str  = "metadata.name";
+const YKRE_LIMIT_ATTEMPT   : u64   = 1500;
+const YKRE_SLEEP_START     : u64   = 50;
+const YKRE_SLEEP_DATA      : u64   = 1;
+const YKRE_SLEEP_NODATA    : u64   = 1;
+const YKRE_ERROR_NOTFOUND  : &str  = "no match found for specified pattern";
+const YKRE_ERROR_INVALID   : &str  = "invalid parameter. Type ykre for help";
+const YKRE_ERROR_NOPIPE    : &str  = "you must send data using pipe. Type ykre for help";
+const YKRE_DESCRIPTION     : &str  = r"
  Ykre is a small program  written in `rust` wich purpose is to extract from a list
  of yaml documents, documents matching a specified condition. Ykre goal is to find 
  specific Kubernetes Resource from the kustomize output.
- Ykre stands for Yaml Kubernetes Resources Ectractor.
-
- Usage :
-
-     ykre SEARCH [DEF]
-
-     you MUST use pipe with ykre command
-
-     SEARCH - value of kubernetes resource name
-     DEF    - the yaml node to look for 
-              (default : 'metadata.name', dot is the separator for embed nodes)
-
-     ex :
-         # display content of the kubernetes resource 'myResourceName'
-         cat kubresources.yaml | ykre 'myResourceName'
-         # write content of the kubernetes resource 'pv-dump' into a file
-         kustomize build ./config/volumes/local | ykre 'pv-dump' > ./tmp.yaml
-         # retriew kubernetes pv resources matching 2Gi disk capacity
-         kustomize build ./config/volumes/dev | ykre 2Gi spec.capacity.storage
+ Ykre stands for Yaml Kubernetes Resources Extractor.
 ";

src/ykre/app.rs

@@ -1,5 +1,6 @@
 use std::panic;
 use std::env;
+use std::io;
 use std::sync::mpsc::TryRecvError;
 
 use crate::ykre::*;
@@ -43,11 +44,15 @@ pub fn get_data(buf :&mut String, limit :u32) -> bool {
     return has_data
 }
 
-pub fn run() {
+pub fn run() -> io::Result<()> {
+    set_panic();
     let args: Vec<String> = env::args().collect();
     if args.len() == 1 {
-        println!("{}", YKRE_HELP);
-        return
+        title(YKRE_NAME, YKRE_VERSION, YKRE_LICENSE, YKRE_AUTHOR);
+        description(YKRE_DESCRIPTION);
+        usage();
+        example();
+        return Ok(());
     }
     else if args.len() > 1 && args.len() <= 3 {
 
@@ -59,9 +64,32 @@ pub fn run() {
         };
         let limit : u32  = env::var("YKRE_LIMIT_ATTEMPT").unwrap_or(format!("{}", YKRE_LIMIT_ATTEMPT).to_owned()).parse::<u32>().unwrap();
         if get_data(&mut buf, limit) {
-            return find(search, def, buf);
+            find(search, def, buf);
+            return Ok(());
         }
         panic!(YKRE_ERROR_NOPIPE)
     }
     panic!(YKRE_ERROR_INVALID)
 }
+
+pub fn set_panic() {
+    panic::set_hook(Box::new(|_info| {
+        let mut bypass :bool = false;
+        if let Some(location) = &_info.location() {
+            bypass = location.file() == PANIC_BYPASS_FILE && location.line() == PANIC_BYPASS_LINE;
+        }
+        if !bypass {
+            //~ println!("{:?}", &_info);
+            if let Some(s) = &_info.payload().downcast_ref::<&str>() {
+                if s.len() > 1 {
+                    title(YKRE_NAME, YKRE_VERSION, YKRE_LICENSE, YKRE_AUTHOR);
+                    perror(s);
+                    if *s != &YKRE_ERROR_NOTFOUND {
+                        usage();
+                        println!("");
+                    }
+                }
+            }
+        }
+    }));
+}

src/ykre/color.rs

@@ -0,0 +1,19 @@
+use colored::*;
+
+pub struct Rgb {
+    pub r: u8,
+    pub g: u8,
+    pub b: u8,
+}
+
+impl Rgb {
+    pub fn new(r: u8, g: u8, b: u8) -> Self {
+        Self { r, g, b }
+    }
+    pub fn fg(self, label: &str) -> ColoredString {
+        label.truecolor(self.r, self.g, self.b) 
+    }
+    pub fn bg(self, label: &str) -> ColoredString {
+        label.on_truecolor(self.r, self.g, self.b) 
+    }
+}

src/ykre/echo.rs

@@ -0,0 +1,76 @@
+use crate::ykre::*;
+use colored::*;
+use std::borrow::Cow;
+
+pub fn title(label :&str, version :&str, license: &str, author :&str) {
+    let space     = 42+version.len()+label.len()+license.len()+author.len();
+    let sep       = format!("{}", CSEP.fg(&"―".repeat(WIDTH+1)));
+    let titlesep  = CTITLESEP.fg(" :: ");
+    let ptitle    = BG.bg(&format!("{}{}{}", titlesep, CTITLE.fg(label), titlesep)).bold();
+    println!("{}"    , sep);
+    print!  (" {} "  , ptitle);
+    print!  ("{}"    , keyval("version", version, CKEY1, CVAL1).bold());
+    print!  ("{}"    , " ".repeat(WIDTH-space));
+    print!  ("{}   " , keyval("license", license, CKEY1, CVAL1).bold());
+    println!("{}"    , keyval("author", author, CKEY2, CVAL2).bold());
+    println!("{}"    , sep);
+}
+
+pub fn keyval (key :&str, val :&str, ck : Rgb, cv : Rgb) -> Cow<'static, str> {
+    format!("{} {}", ck.fg(&format!("{} :", key)), cv.fg(val)).into()
+}
+
+pub fn description(description :&str) {
+    println!(" {}", CTEXT.fg(description));
+}
+
+pub fn usage() {
+    let space_arg : usize = 11;
+    let arg1 : &str = "SEARCH";
+    let arg2 : &str = "DEF";
+    println!(" {} :", CUSAGE.fg("Usage").bold());
+    println!("");
+    println!(" {}", format!("{} {} {}{}{}", 
+        CPROG.fg(&YKRE_NAME.to_lowercase()),
+        CARG.fg(&arg1),
+        COPTSEP.fg("["),
+        CARG.fg(&arg2),
+        COPTSEP.fg("]")
+    ).bold());
+    println!("");
+    println!("     {}", CTEXT.fg("you MUST use pipe with ykre command"));
+    println!("");
+    print!  ("{}{} : ", " ".repeat(space_arg-arg1.len()), CARG.fg(arg1).bold());
+    println!("{}"     , CTEXT.fg("value of matching yaml node (kubernetes resource name)"));
+    println!("");
+    print!  ("{}{} : ", " ".repeat(space_arg-arg2.len()), CARG.fg(arg2).bold());
+    println!("{}"     , CTEXT.fg("the yaml node to look for"));
+    println!("{}{}"   , " ".repeat(space_arg+3), CTEXT.fg("(default : 'metadata.name', dot is the separator for embed nodes)"));
+}
+
+pub fn example() {
+    println!("");
+    println!(" {} :" , CUSAGE.fg("Examples").bold());
+    println!("");
+
+    println!("    {}", CCOM.fg("# display content of the kubernetes resource 'myResourceName'"));
+    print!  ("    {}", format!("{} {} {}", CPROG.fg("cat"), CARG.fg("'./kubresources.yaml'"), COPTSEP.fg("|")).bold());
+    println!(" {}"   , format!("{} {}"   , CPROG.fg("ykre"), CARG.fg("'myResourceName'")).bold());
+    println!("");
+
+    println!("    {}", CCOM.fg("# write content of the kubernetes resource 'pv-dump' into a file"));
+    print!  ("    {}", format!("{} {} {} {}", CPROG.fg("kustomize"), CARG.fg("build"), CARG.fg("'./config/volumes/local'"), COPTSEP.fg("|")).bold());
+    println!(" {}"   , format!("{} {} {} {}", CPROG.fg("ykre"), CARG.fg("'pv-dump'"), COPTSEP.fg(">"), CSTR.fg("./tmp.yaml")).bold());
+    println!("");
+
+    println!("    {}", CCOM.fg("# retriew kubernetes pv resources matching 2Gi disk capacity"));
+    print!  ("    {}", format!("{} {} {} {}", CPROG.fg("kustomize"), CARG.fg("build"), CARG.fg("'./config/volumes/dev'"), COPTSEP.fg("|")).bold());
+    println!(" {}"   , format!("{} {} {}"   , CPROG.fg("ykre"), CARG.fg("'2Gi'"), CARG.fg("'spec.capacity.storage'")).bold());
+    println!("");
+}
+
+pub fn perror(msg: &str) {
+    println!("");
+    println!(" {} : {}", format!("{}", CERR.fg("error")).bold(), CERRMSG.fg(msg));
+    println!("");
+}