Adds new extend-rows flag (-e) to disable truncation (#116)

Adds a new extend-rows flag (-e) which allows the user to disable row
truncation. This is super helpful for wide csv files that are larger
than the terminal width. When using this flag, pipe output to `less -S`
to be able to use the arrow keys to scroll right and left to actually
view the overflowing columns.

Eg:

    `tidy-viewer -e wide.csv | less -S`

Or even... to preserve colors through less...

    `tidy-viewer -a -e wide.csv | less -S`.

CHANGELOG.md

@@ -1,3 +1,10 @@
+1.4.4 (2021-11-18)
+==================
+
+* **Feature 1**  Added -e flag to extend rows (don't truncate).
+
+This new version gives a flag option to extend rows rather than truncate. This is especially useful for wide csv files that would overflow the terminal width. When using the extend mode, pipe output to `less -S` to enables scrolling right and left with arrow keys.
+
 1.4.3 (2021-11-17)
 ==================
 

Cargo.toml

@@ -8,7 +8,7 @@ license = "Unlicense/MIT"
 name = "tidy-viewer"
 readme = "README.md"
 repository = "https://github.com/alexhallam/tv"
-version = "1.4.3"
+version = "1.4.4"
 
 [package.metadata.deb]
 assets = [

README.md

@@ -310,7 +310,7 @@ For information on dotfile configuration see `tv --help`. This allows users to s
 `tv --help`
 
 ```txt
-tv 1.4.3
+tv 1.4.4
 Tidy Viewer (tv) is a csv pretty printer that uses column styling to maximize viewer enjoyment.✨✨📺✨✨
 
     Example Usage:
@@ -338,6 +338,8 @@ Tidy Viewer (tv) is a csv pretty printer that uses column styling to maximize vi
         #lower_column_width = 2
         ## head number of rows to output <row-display> [default: 25]
         #number = 35
+        ## extend rows beyond term width (do not trucate) [default: false]
+        # extend_rows = true
         ## meta_color = [R,G,B] color for row index and "tv dim: rowsxcols"
         #meta_color = [64, 179, 162]
         ## header_color = [R,G,B] color for column headers
@@ -354,6 +356,7 @@ USAGE:
 
 FLAGS:
     -d, --debug-mode      Print object details to make it easier for the maintainer to find and resolve bugs.
+    -e, --extend-rows     Extended row beyond term width (do not truncate). Useful with `less -S`.
     -a, --color-always    Always force color output. Example `tv -a starwars.csv | less -R` or `tv -a starwars.csv | bat
                           -p`. The `less` cli has the `-R` flag to parse colored output.
     -h, --help            Prints help information

src/main.rs

@@ -43,6 +43,8 @@ use toml;
         #lower_column_width = 2
         ## head number of rows to output <row-display> [default: 25]
         #number = 35
+        ## extend rows beyond term width (do not trucate) [default: false]
+        # extend_rows = true
         ## meta_color = [R,G,B] color for row index and \"tv dim: rowsxcols\"
         #meta_color = [64, 179, 162]
         ## header_color = [R,G,B] color for column headers
@@ -117,6 +119,12 @@ struct Cli {
         help = "Significant Digits. Default 3. Max is 7"
     )]
     sigfig: i64,
+    #[structopt(
+        short = "e",
+        long = "extend-rows",
+        help = "Extended row beyond term width (do not truncate). Useful with `less -S`."
+    )]
+    extend: bool,
     #[structopt(
         short = "d",
         long = "debug-mode",
@@ -144,6 +152,7 @@ fn main() {
         upper_column_width: usize,
         lower_column_width: usize,
         number: usize,
+        extend_rows: bool,
         meta_color: toml::value::Array,
         header_color: toml::value::Array,
         std_color: toml::value::Array,
@@ -157,12 +166,12 @@ fn main() {
     let conf_file = PathBuf::from("tv.toml");
     let conf_dir_file: PathBuf = config_dir.join(conf_file.clone());
     let file_contents: Option<String> = std::fs::read_to_string(conf_dir_file).ok();
-    //println!("file_contents {:?}", file_contents);
+    // println!("file_contents {:?}", file_contents);
     let config: Option<Data> = match file_contents {
         Some(x) => toml::from_str(&x.to_owned()).ok(),
         None => None,
     };
-    //println!("config {:#?}", config);
+    // println!("config {:#?}", config);
 
     let term_tuple = size().unwrap();
     let opt = Cli::from_args();
@@ -178,6 +187,7 @@ fn main() {
     let is_row_display_defined = !(opt.row_display == 25);
     let is_tty = atty::is(atty::Stream::Stdout);
     let is_force_color = opt.force_color;
+    let extend_option = opt.extend || config.as_ref().map(|d| d.extend_rows).unwrap_or(false);
 
     let title_option = match (&config, is_title_defined) {
         (Some(x), false) => &x.title,
@@ -401,7 +411,11 @@ fn main() {
         vp.push(row);
     }
 
-    let num_cols_to_print = get_num_cols_to_print(cols, vp.clone(), term_tuple);
+    let num_cols_to_print = if extend_option {
+        cols
+    } else {
+        get_num_cols_to_print(cols, vp.clone(), term_tuple)
+    };
 
     // color
     let meta_text = "tv dim:";