[Feat] support for take code snapshot in ASCII art format ^ ^ (#114)

* [Refactor] separate calc_wh_with_min_width from calc_wh

* [Feat] support take code snapshot as ascii art

* [Fix] incorrect line number

* [Feat] remove unused logger

generator/src/code.rs

@@ -12,9 +12,13 @@ fn min_width(width: f32) -> f32 {
     }
 }
 
-// Because the code block is input by users, we need to calculate the width and height
-// to make sure render the width and height of the "editor" shape correctly
-#[cached(key = "String", convert = r#"{ format!("{}", text) }"#)]
+pub fn calc_max_line_number_length(code_length: usize, start_line_number: usize) -> usize {
+    let max_line_number = code_length + start_line_number;
+
+    // If code length is 1, the max_line_number will equal to start_line_number
+    (max_line_number - 1).to_string().len()
+}
+
 pub fn calc_wh(text: &str, char_wdith: f32, line_height: f32) -> (f32, f32) {
     let trimmed_text = prepare_code(text);
     let lines = trimmed_text.lines();
@@ -28,6 +32,15 @@ pub fn calc_wh(text: &str, char_wdith: f32, line_height: f32) -> (f32, f32) {
     let width = max_length_line.len() as f32 * char_wdith;
     let height = lines.collect::<Vec<&str>>().len() as f32 * line_height;
 
+    (width, height)
+}
+
+// Because the code block is input by users, we need to calculate the width and height
+// to make sure render the width and height of the "editor" shape correctly
+#[cached(key = "String", convert = r#"{ format!("{}", text) }"#)]
+pub fn calc_wh_with_min_width(text: &str, char_wdith: f32, line_height: f32) -> (f32, f32) {
+    let (width, height) = calc_wh(text, char_wdith, line_height);
+
     (min_width(width), height)
 }
 

generator/src/components/breadcrumbs.rs

@@ -1,7 +1,7 @@
 use cosmic_text::{Attrs, Color, Family};
 use regex::Regex;
 
-use crate::{code::calc_wh, edges::margin::Margin, text::FontRenderer};
+use crate::{code::calc_wh_with_min_width, edges::margin::Margin, text::FontRenderer};
 
 use super::interface::{
     component::Component,
@@ -24,7 +24,7 @@ impl Component for Breadcrumbs {
         let style = RawComponentStyle::default();
 
         if self.has_breadcrumbs {
-            let (w, h) = calc_wh(&self.path, 8., self.line_height);
+            let (w, h) = calc_wh_with_min_width(&self.path, 8., self.line_height);
 
             style.size(Size::Num(w), Size::Num(h)).margin(Margin {
                 top: 5.,

generator/src/components/editor/code.rs

@@ -1,5 +1,5 @@
 use crate::{
-    code::{calc_wh, prepare_code, CHAR_WIDTH},
+    code::{calc_wh_with_min_width, prepare_code, CHAR_WIDTH},
     components::interface::{
         component::{Component, ComponentContext, RenderParams},
         render_error,
@@ -22,7 +22,7 @@ impl Component for Code {
     }
 
     fn style(&self) -> RawComponentStyle {
-        let (w, h) = calc_wh(&self.value, CHAR_WIDTH, self.line_height);
+        let (w, h) = calc_wh_with_min_width(&self.value, CHAR_WIDTH, self.line_height);
 
         Style::default().size(Size::Num(w), Size::Num(h))
     }

generator/src/copy_ascii.rs

@@ -0,0 +1,65 @@
+use std::cmp::max;
+
+use crate::{
+    code::{calc_max_line_number_length, calc_wh},
+    config::TakeSnapshotParams,
+};
+use arboard::Clipboard;
+use nvim_oxi::Result;
+
+const SPACE_BOTH_SIDE: usize = 2;
+
+fn optional(component: String, is_view: bool) -> String {
+    if is_view {
+        component
+    } else {
+        "".to_string()
+    }
+}
+
+#[allow(dead_code)]
+pub fn copy_ascii(params: TakeSnapshotParams) -> Result<()> {
+    let (width, height) = calc_wh(&params.code, 1., 1.);
+    let calc_line_number_width =
+        |start_line_number: usize| calc_max_line_number_length(height as usize, start_line_number);
+    let frame_width = max(width as usize, params.file_path.len()) + SPACE_BOTH_SIDE;
+    let frame_width = match params.start_line_number {
+        Some(start_line_number) => {
+            frame_width + SPACE_BOTH_SIDE + calc_line_number_width(start_line_number)
+        }
+        None => frame_width,
+    };
+    let line = format!("│{}│\n", "─".repeat(frame_width));
+    let frame_width_with_content = frame_width - 1;
+    let top_frame = format!("╭{}╮\n", "─".repeat(frame_width));
+    let bottom_frame = format!("╰{}╯", "─".repeat(frame_width));
+    let code = params
+        .code
+        .lines()
+        .enumerate()
+        .map(|(i, line)| {
+            format!(
+                "│ {:1$} │\n",
+                match params.start_line_number {
+                    Some(start_line_number) => format!(
+                        "{:1$} {line}",
+                        start_line_number + i,
+                        calc_line_number_width(start_line_number),
+                    ),
+                    None => line.to_string(),
+                },
+                frame_width_with_content - 1
+            )
+        })
+        .collect::<String>();
+    let text_line = |text: &str| format!("│ {:1$}│\n", text, frame_width_with_content);
+    let breadcrumbs = optional(
+        format!("{}{line}", text_line(&params.file_path)),
+        params.has_breadcrumbs,
+    );
+    let ascii_snapshot = format!("{top_frame}{breadcrumbs}{code}{bottom_frame}");
+
+    Clipboard::new().unwrap().set_text(ascii_snapshot).unwrap();
+
+    Ok(())
+}

generator/src/lib.rs

@@ -3,6 +3,7 @@ mod color;
 mod components;
 mod config;
 mod copy;
+mod copy_ascii;
 mod edges;
 mod highlight;
 mod path;
@@ -11,6 +12,7 @@ mod snapshot;
 mod text;
 
 use copy::copy_into_clipboard;
+use copy_ascii::copy_ascii;
 use nvim_oxi::{Dictionary, Function, Result};
 use save::save_snapshot;
 
@@ -22,5 +24,6 @@ fn generator() -> Result<Dictionary> {
             Function::from_fn(copy_into_clipboard),
         ),
         ("save_snapshot", Function::from_fn(save_snapshot)),
+        ("copy_ascii", Function::from_fn(copy_ascii)),
     ]))
 }

lua/codesnap/init.lua

@@ -21,6 +21,13 @@ function main.copy_into_clipboard_with_config(config)
   vim.notify("Save snapshot into clipboard successfully")
 end
 
+-- Take ASCII code snapshot into clipboard
+function main.copy_ascii_snapshot(extension)
+  require("generator").copy_ascii(config_module.get_config(extension))
+  vim.cmd("delmarks <>")
+  vim.notify("Save snapshot into clipboard successfully")
+end
+
 function main.save_snapshot_with_config(config)
   if string_utils.is_str_empty(static.config.save_path) then
     error(

plugin/codesnap.lua

@@ -23,6 +23,12 @@ vim.api.nvim_create_user_command("CodeSnap", take_snapshot(codesnap.copy_into_cl
 
 vim.api.nvim_create_user_command("CodeSnapSave", take_snapshot(codesnap.save_snapshot), { nargs = "*", range = "%" })
 
+vim.api.nvim_create_user_command(
+  "CodeSnapASCII",
+  take_snapshot(codesnap.copy_ascii_snapshot),
+  { nargs = "*", range = "%" }
+)
+
 vim.api.nvim_create_user_command(
   "CodeSnapHighlight",
   take_snapshot(codesnap.highlight_mode_copy_into_clipboard),