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written initial prototype in rust

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FantasyPvP
2024-10-24 18:32:17 +01:00
commit 9cdd608311
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.gitignore
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*/target
*.out
final/main.c
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#include <ncurses.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
typedef struct {
int file_line;
int file_col;
int buff_line;
int buff_col;
int editmode;
} EditorData;
void help() {
printf("Usage:\n");
printf(" cmd open <path/to/file> // opens the specified file\n");
printf(" cmd rm <path/to/file> // deletes the specified file\n");
printf(" cmd new <path/to/file> // creates a new empty file at the specified path\n");
printf(" cmd mv <path/to/file> <new/path> // moves the specified file to the new path\n");
printf(" cmd cp <path/to/file> <new/path> // copies the specified file to the new path\n");
printf(" cmd len <path/to/file> // returns the length of the specified file\n");
printf(" cmd log // prints a list of all changes made to the file\n");
}
prototype/Cargo.lock
Generated
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "cc"
version = "1.1.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c2e7962b54006dcfcc61cb72735f4d89bb97061dd6a7ed882ec6b8ee53714c6f"
dependencies = [
"shlex",
]
[[package]]
name = "cs_coursework_editor_draft"
version = "0.1.0"
dependencies = [
"ncurses",
]
[[package]]
name = "libc"
version = "0.2.161"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
[[package]]
name = "ncurses"
version = "6.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fbd71afa95710e841d173521e8483e764004eb332bdf47bd01d00f568688027f"
dependencies = [
"cc",
"libc",
"pkg-config",
]
[[package]]
name = "pkg-config"
version = "0.3.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
[[package]]
name = "shlex"
version = "1.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
prototype/Cargo.toml
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[package]
name = "cs_coursework_editor_draft"
version = "0.1.0"
edition = "2021"
[dependencies]
ncurses = "6.0.1"
prototype/something.txt
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[package] name = "cs_coursework_editor_draft" version = "0.1.0" edition = "2021" [dependencies] ncurses = "6.0.1" i may have made a very scuffed version of vim.
prototype/src/main.rs
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extern crate ncurses;
use std::{env, fs::{self, File, OpenOptions}, io::Write};
struct EditorData {
file_line: i32,
file_col: i32,
buff_line: i32,
buff_col: i32,
editmode: bool,
}
impl EditorData {
fn new() -> EditorData {
EditorData {
file_line: 0,
file_col: 0,
buff_line: 0,
buff_col: 0,
editmode: false,
}
}
}
fn main() {
let args = env::args().collect::<Vec<String>>();
if let Some(a) = env::args().nth(1) {
match a.as_str() {
"open" => open(&args[2]).unwrap(),
// "rm" => rm(&args[2]),
// "new" => new(&args[2]),
// "mv" => mv(&args[2], &args[3]),
// "cp" => cp(&args[2], &args[3]),
// "len" => len(&args[2]),
// "log" => log(),
_ => help(),
}
} else {
help();
}
}
fn help() {
println!("Usage:
cmd open <path/to/file> // opens the specified file
cmd rm <path/to/file> // deletes the specified file
cmd new <path/to/file> // creates a new empty file at the specified path
cmd mv <path/to/file> <new/path> // moves the specified file to the new path
cmd cp <path/to/file> <new/path> // copies the specified file to the new path
cmd len <path/to/file> // returns the length of the specified file
cmd log // prints a list of all changes made to the file
")
}
fn open(filename: &str) -> Result<(), &'static str> {
let filestr = match fs::read_to_string(filename) {
Ok(s) => s,
Err(_) => return Err("file not found"),
};
let mut data = EditorData::new();
ncurses::initscr();
ncurses::raw();
ncurses::noecho();
ncurses::keypad(ncurses::stdscr(), true);
let mut max_y = 0;
let mut max_x = 0;
ncurses::getmaxyx(ncurses::stdscr(), &mut max_y, &mut max_x);
if let Err(_) = ncurses::addstr(&filestr) {
ncurses::endwin();
return Err("error writing file to buffer");
};
ncurses::mv(0, 0);
loop {
ncurses::refresh();
let keystroke = ncurses::getch();
if data.editmode {
match keystroke {
27 => data.editmode = false,
ncurses::KEY_BACKSPACE => {
mv_cursor(&mut data, 0, -1);
ncurses::delch();
},
ncurses::KEY_DC => { ncurses::delch(); },
ncurses::KEY_LEFT => mv_cursor(&mut data, 0, -1),
ncurses::KEY_RIGHT => mv_cursor(&mut data, 0, 1),
ncurses::KEY_UP => mv_cursor(&mut data, -1, 0),
ncurses::KEY_DOWN => mv_cursor(&mut data, 1, 0),
_ => { ncurses::insch(keystroke as u32); mv_cursor(&mut data, 0, 1); },
}
} else {
match keystroke {
105 => {
data.editmode = true;
},
119 => {
let buff_size = max_y * max_x;
let mut buff = vec![0; buff_size as usize];
for i in 0..buff_size {
buff[i as usize] = (ncurses::mvwinch(ncurses::stdscr(), i / max_x, i % max_x) & ncurses::A_CHARTEXT) as u8;
}
ncurses::endwin();
OpenOptions::new()
.write(true)
.truncate(true)
.open(filename)
.unwrap()
.write_all(&buff)
.unwrap();
}
113 => {
ncurses::endwin();
return Ok(());
},
_ => {},
}
}
}
}
fn mv_cursor(pos: &mut EditorData, dy: i32, dx: i32) {
if pos.file_col + dx >= 0 {
pos.file_col += dx;
}
if pos.buff_col + dx >= 0 {
pos.buff_col += dx;
}
if pos.file_line + dy >= 0 {
pos.file_line += dy;
}
if pos.buff_line + dy >= 0 {
pos.buff_line += dy;
}
ncurses::mv(pos.buff_line, pos.buff_col);
}