cli: add file

Author: ahaoboy

Cargo.toml

@@ -3,7 +3,7 @@ use std::collections::VecDeque;
 use crate::{
     ans::min_distance,
     color::{AnsiColor, Color8},
-    lex::{parse_ansi, Sgr, Token},
+    lex::{Sgr, Token, parse_ansi},
     node::Node,
 };
 
@@ -87,7 +87,7 @@ impl Canvas {
         let mut color_r = (0, 0);
         let mut bold_r = (0, 0);
         let mut blink_r = (0, 0);
-        let mut text_r = (0, 0);
+        // let mut text_r = (0, 0);
         let mut dim_r = (0, 0);
         let mut italic_r = (0, 0);
         let mut underline_r = (0, 0);
@@ -137,7 +137,7 @@ impl Canvas {
                 }
 
                 Sgr::Char(c) => {
-                    text_r = range;
+                    // text_r = range;
                     let node = Node {
                         text: c.into(),
                         bg_color: cur_bg_c,
@@ -154,7 +154,7 @@ impl Canvas {
                         color_r,
                         bold_r,
                         blink_r,
-                        text_r,
+                        text_r: range,
                         dim_r,
                         italic_r,
                         underline_r,

ansi2/Cargo.toml

@@ -2,9 +2,9 @@ use ansi2::ans::to_ans;
 use ansi2::image::image_to_ans;
 use ansi2::{css::Mode, theme::Theme};
 use ansi2::{html::to_html, svg::to_svg, text::to_text};
-use base64::prelude::BASE64_STANDARD;
 use base64::Engine;
-use clap::{command, Parser, ValueEnum};
+use base64::prelude::BASE64_STANDARD;
+use clap::{Parser, ValueEnum, command};
 use std::path::Path;
 use std::{fs::read, io::Read};
 
@@ -47,6 +47,9 @@ struct Args {
 
     #[arg(short, long, default_value_t = false)]
     sourcemap: bool,
+
+    #[clap()]
+    file: Option<String>,
 }
 
 fn process_input(buf: Vec<u8>) -> String {
@@ -73,14 +76,20 @@ fn main() {
         font_size,
         length_adjust,
         sourcemap,
+        file,
     } = args;
     let format = format.unwrap_or(Format::Svg);
     let theme = theme.unwrap_or(Theme::Vscode);
 
-    let mut buf = Vec::new();
-    std::io::stdin()
-        .read_to_end(&mut buf)
-        .expect("can't read string from stdin");
+    let buf = if let Some(file) = file {
+        std::fs::read(file).expect("can't read string from file")
+    } else {
+        let mut v = Vec::new();
+        std::io::stdin()
+            .read_to_end(&mut v)
+            .expect("can't read string from stdin");
+        v
+    };
 
     let s = process_input(buf);
     let base64 = font.map(|font_url| {