first steps

Cargo.lock

@@ -0,0 +1,164 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bitflags"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "errno"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "fastrand"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "486f806e73c5707928240ddc295403b1b93c96a02038563881c4a2fd84b81ac4"
+
+[[package]]
+name = "libc"
+version = "0.2.164"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "433bfe06b8c75da9b2e3fbea6e5329ff87748f0b144ef75306e674c3f6f7c13f"
+
+[[package]]
+name = "linux-raw-sys"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
+
+[[package]]
+name = "mvw"
+version = "0.1.0"
+dependencies = [
+ "tempfile",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"
+
+[[package]]
+name = "rustix"
+version = "0.38.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7f649912bc1495e167a6edee79151c84b1bad49748cb4f1f1167f459f6224f6"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "tempfile"
+version = "3.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28cce251fcbc87fac86a866eeb0d6c2d536fc16d06f184bb61aeae11aa4cee0c"
+dependencies = [
+ "cfg-if",
+ "fastrand",
+ "once_cell",
+ "rustix",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

Cargo.toml

@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+tempfile = "3.14.0"

src/main.rs

@@ -1,3 +1,101 @@
-fn main() {
+use std::fs;
-    println!("Hello, world!");
+use std::fs::File;
+use std::path::PathBuf;
+use std::path::Path;
+use std::io::ErrorKind;
+use std::io::Write;
+use tempfile::NamedTempFile;
+
+const LOCK_FILE: &str = ".mvwrap";
+
+fn read_current_dir() -> Vec<String> {
+    let paths : Vec<PathBuf> = match fs::read_dir(".") {
+        Err(e) if e.kind() == ErrorKind::NotFound => Vec::new(),
+        Err(e) => panic!("Unexpected Error! {:?}", e),
+        Ok(entries) => entries.filter_map(|e| e.ok())
+            .map(|e| e.path())
+            .collect()
+    };
+
+    let mut path_list : Vec<String> = vec![];
+    for path in paths {
+        let path_string = path.display().to_string();
+        if path_string != format!("./{}", LOCK_FILE) {
+            path_list.push(path_string[2..].to_string());
+        }
+    }
+    path_list.sort();
+    path_list
+}
+
+fn lock_dir() {
+    if Path::new(LOCK_FILE).is_file() {
+        panic!("Lock file \"{}\" exists!", LOCK_FILE);
+    }
+    let _file = match File::create(LOCK_FILE) {
+        Ok(file) => file,
+        Err(_) => panic!("Could not create lock file: {}", LOCK_FILE),
+    };
+}
+
+fn unlock_dir() {
+    if Path::new(LOCK_FILE).is_file() {
+        let _result = match fs::remove_file(LOCK_FILE){
+            Ok(result) => result,
+            Err(_) => panic!("Could not remove lock file: {}", LOCK_FILE),
+        };
+    }
+}
+
+fn create_temp_file(paths: Vec<String>) -> String {
+    let mut tmpfile = match NamedTempFile::new(){
+        Ok(file) => file,
+        Err(e) => panic!("Could not create tempfile: {}", e),
+    };
+
+    for path in paths {
+        let _ = writeln!(tmpfile, "{}", path);
+    }
+
+    let filepath = tmpfile.path().display().to_string();
+
+    let _ = match tmpfile.keep(){
+        Ok(res) => res,
+        Err(e) => panic!("Can't keep tempfile: {}", e),
+    };
+
+    filepath
+}
+
+fn remove_temp_file(tmpfile: String) {
+    if Path::new(&tmpfile).is_file() {
+        let _result = match fs::remove_file(&tmpfile){
+            Ok(result) => result,
+            Err(_) => panic!("Could not remove tempfile: {}", &tmpfile),
+        };
+    }
+}
+
+fn main() {
+    lock_dir();
+
+    let paths = read_current_dir();
+
+    // create named tempfile and fill with paths
+    let temp_file = create_temp_file(paths);
+
+    // edit tempfile
+
+    // read and process tempfile
+    println!("In file: {}", temp_file);
+
+    let contents = fs::read_to_string(temp_file.clone())
+        .expect("Should have been able to read the file");
+
+    println!("With text:\n{contents}");
+    println!("----- END ----");
+
+    remove_temp_file(temp_file);
+
+    unlock_dir();
 }