commit 2179a13aa63d2c6e15257273e035e5626dd0e777
Author: raute <>
Date:   Sat Jun 27 15:27:52 2020 +0200

    Initial commit.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..eb5a316
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..932f868
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,209 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "aho-corasick"
+version = "0.7.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "043164d8ba5c4c3035fec9bbee8647c0261d788f3474306f93bb65901cae0e86"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
+
+[[package]]
+name = "bekape"
+version = "0.1.0"
+dependencies = [
+ "chrono",
+ "clap",
+ "regex",
+]
+
+[[package]]
+name = "bitflags"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+
+[[package]]
+name = "chrono"
+version = "0.4.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80094f509cf8b5ae86a4966a39b3ff66cd7e2a3e594accec3743ff3fabeab5b2"
+dependencies = [
+ "num-integer",
+ "num-traits",
+ "time",
+]
+
+[[package]]
+name = "clap"
+version = "2.33.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdfa80d47f954d53a35a64987ca1422f495b8d6483c0fe9f7117b36c2a792129"
+dependencies = [
+ "ansi_term",
+ "atty",
+ "bitflags",
+ "strsim",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9586eedd4ce6b3c498bc3b4dd92fc9f11166aa908a914071953768066c67909"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.71"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
+
+[[package]]
+name = "memchr"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
+
+[[package]]
+name = "num-integer"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "regex"
+version = "1.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c3780fcf44b193bc4d09f36d2a3c87b251da4a046c87795a0d35f4f927ad8e6"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+ "thread_local",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26412eb97c6b088a6997e05f69403a802a92d520de2f8e63c2b65f9e0f47c4e8"
+
+[[package]]
+name = "strsim"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+
+[[package]]
+name = "textwrap"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+dependencies = [
+ "unicode-width",
+]
+
+[[package]]
+name = "thread_local"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "unicode-width"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
+
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..07093fe
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "bekape"
+version = "0.1.0"
+authors = ["raute"]
+edition = "2018"
+
+[dependencies]
+chrono = "0.4"
+clap = "2.33"
+regex = "1.3"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c064e7c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,8 @@
+# Bekape
+
+I want to produce a very simple backup program that can be used by people who know nothing about their computer.
+It will need an easy GUI that lets you choose the folder to backup and an external drive and start the backup.
+
+For now there is no GUI, just a first try to to incremental backups using hardlinks.
+
+Pre-alpha. You really don't want to use this yet.
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..0fe09fe
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,127 @@
+use clap::{App, Arg};
+use regex::Regex;
+use std::fs;
+use std::time::SystemTime;
+use std::vec::Vec;
+
+fn browse_recursively(dir: &str) -> (Vec<String>, Vec<String>) {
+    let mut content = Vec::new();
+    let mut errors = Vec::new();
+    let ls = fs::read_dir(dir);
+    if let Ok(ls) = ls {
+        for entry in ls {
+            if let Ok(entry) = entry {
+                let full_path = entry.path().to_string_lossy().to_string();
+                if let Ok(file_type) = entry.file_type() {
+                    if file_type.is_dir() {
+                        let mut result = browse_recursively(&full_path);
+                        content.append(&mut result.0);
+                        errors.append(&mut result.1);
+                    } else {
+                        content.push(full_path);
+                    }
+                } else {
+                    errors.push(full_path);
+                }
+            }
+        }
+    } else {
+        errors.push(dir.to_string());
+    }
+    (content, errors)
+}
+
+fn get_file_metadata(file: &str) -> (SystemTime, u64) {
+    if let Ok(metadata) = fs::metadata(file) {
+        let time = metadata.modified().unwrap_or(std::time::UNIX_EPOCH);
+        let size = metadata.len();
+        return (time, size);
+    };
+    (std::time::UNIX_EPOCH, 0)
+}
+
+fn backup_element(path: &str, src_root: &str, bkp_root: &str, prev_bkp_root: &Option<String>) {
+    let src_file = format!("{}{}", src_root, path);
+    let bkp_file = format!("{}{}", bkp_root, path);
+    let p = bkp_file.rfind('/').unwrap(); // TODO: Is unwrap okay here?
+    let bkp_folder = bkp_file[0..p].to_string();
+    let _ = fs::create_dir_all(&bkp_folder);
+    let mut backup_done = false;
+    if let Some(prev_bkp_root) = prev_bkp_root {
+        let prev_bkp_file = format!("{}{}", prev_bkp_root, path);
+        if std::path::Path::new(&prev_bkp_file).exists() {
+            let prev_bkp_metadata = get_file_metadata(&prev_bkp_file);
+            let src_metadata = get_file_metadata(&src_file);
+            backup_done = prev_bkp_metadata.0 > src_metadata.0
+                && prev_bkp_metadata.1 == src_metadata.1
+                && fs::hard_link(&prev_bkp_file, &bkp_file).is_ok();
+        }
+    }
+
+    if !backup_done && fs::copy(&src_file, &bkp_file).is_err() {
+        eprintln!("Could not copy: {} -> {}", src_file, bkp_file);
+    }
+}
+
+fn main() {
+    let matches = App::new("bekape")
+        .about("Simple backup program.")
+        .arg(
+            Arg::with_name("source")
+                .help("The folder to backup")
+                .required(true),
+        )
+        .arg(
+            Arg::with_name("destination")
+                .help("The folder to store the backup")
+                .required(true),
+        )
+        .get_matches();
+    let bkp_src = matches.value_of("source").unwrap();
+    let bkp_dst = matches.value_of("destination").unwrap();
+
+    let dt = chrono::offset::Utc::now().format("%Y-%m-%d_%H-%M-%S");
+    let backup_folder = format!("{}/backup_{}_wip", bkp_dst, dt);
+    if fs::create_dir(&backup_folder).is_err() {
+        eprintln!("Could not create backup directory: {}", &backup_folder);
+        std::process::exit(1);
+    }
+
+    // find previous backup
+    let backup_regex = Regex::new(r"backup_\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}$").unwrap();
+    let ls = fs::read_dir(bkp_dst);
+    let prev_backup = if let Ok(ls) = ls {
+        let mut ls = ls
+            .filter_map(|s| s.ok())
+            .map(|s| s.path().to_string_lossy().trim().to_owned())
+            .filter(|s| backup_regex.is_match(&s))
+            .collect::<Vec<_>>();
+        if ls.is_empty() {
+            None
+        } else {
+            ls.sort();
+            ls.last().cloned()
+        }
+    } else {
+        None
+    };
+
+    let result = browse_recursively(&bkp_src);
+    let content = result.0.iter().map(|s| {
+        let l = bkp_src.len();
+        s[l..].to_string()
+    });
+
+    for err in result.1 {
+        eprintln!("Could not read {}.", err);
+    }
+
+    for elem in content {
+        backup_element(&elem, &bkp_src, &backup_folder, &prev_backup);
+    }
+
+    let new_name = backup_folder.replace("_wip", "");
+    if fs::rename(&backup_folder, &new_name).is_err() {
+        eprintln!("Could not rename folder.");
+    }
+}