import libpt's remaining hedu parts to here
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This commit is contained in:
Christoph J. Scherr 2024-02-01 22:54:07 +01:00
parent 470b0c9121
commit f5ec931b33
Signed by: PlexSheep
GPG Key ID: 7CDD0B14851A08EF
3 changed files with 252 additions and 45 deletions

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@ -16,3 +16,4 @@ libpt = { version = "0.3.11", features = ["log", "bintols"] }
clap = { version = "4.4.4", features = ["derive", "help"] }
clap-num = { version = "1.0.2" }
clap-verbosity-flag = { version = "2.0.1" }
anyhow = "1.0.79"

240
src/dumper.rs Normal file
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@ -0,0 +1,240 @@
//! # Dump data
//!
//! This crate is part of [`pt`](../libpt/index.html), but can also be used as a standalone
//! module.
//!
//! Hedu is made for hexdumping data. `libpt` offers a cli application using this module.
use std::io::{prelude::*, Read, SeekFrom};
use anyhow::{bail, Result};
use libpt::bintols::display::humanbytes;
use libpt::log::{debug, error, trace, warn};
pub const BYTES_PER_LINE: usize = 16;
pub const LINE_SEP_HORIZ: char = '─';
pub const LINE_SEP_VERT: char = '│';
pub const CHAR_BORDER: &'static str = "|";
#[derive(Debug)]
pub struct Hedu {
pub chars: bool,
pub skip: usize,
pub show_identical: bool,
pub limit: usize,
stop: bool,
len: usize,
data_idx: usize,
rd_counter: usize,
buf: [[u8; BYTES_PER_LINE]; 2],
alt_buf: usize,
pub display_buf: String,
first_iter: bool,
}
impl Hedu {
pub fn new(chars: bool, skip: usize, show_identical: bool, limit: usize) -> Self {
Hedu {
chars,
skip,
show_identical,
limit,
stop: false,
len: 0,
data_idx: 0,
rd_counter: 0,
buf: [[0; BYTES_PER_LINE]; 2],
alt_buf: 0,
display_buf: String::new(),
first_iter: true,
}
}
#[inline]
pub fn display(&mut self) {
println!("{}", self.display_buf);
self.display_buf = String::new();
}
#[inline]
pub fn sep(&mut self) {
if self.chars {
self.display_buf += &format!("{LINE_SEP_HORIZ}").repeat(80);
} else {
self.display_buf += &format!("{LINE_SEP_HORIZ}").repeat(59);
}
self.display();
}
#[inline]
pub fn newline(&mut self) {
self.display_buf += "\n";
self.display();
}
fn dump_a_line(&mut self) {
self.display_buf += &format!("{:08X} {LINE_SEP_VERT} ", self.data_idx);
if self.len != 0 {
for i in 0..self.len {
if i as usize % BYTES_PER_LINE == BYTES_PER_LINE / 2 {
self.display_buf += " ";
}
self.display_buf += &format!("{:02X} ", self.buf[self.alt_buf][i]);
}
if self.len == BYTES_PER_LINE / 2 {
self.display_buf += " "
}
for i in 0..(BYTES_PER_LINE - self.len) {
if i as usize % BYTES_PER_LINE == BYTES_PER_LINE / 2 {
self.display_buf += " ";
}
self.display_buf += " ";
}
} else {
self.display_buf += &format!("{:49}", "");
}
if self.chars {
self.display_buf += &format!("{LINE_SEP_VERT} ");
if self.len != 0 {
self.display_buf += CHAR_BORDER;
for i in 0..self.len {
self.display_buf +=
&format!("{}", mask_chars(self.buf[self.alt_buf][i] as char));
}
self.display_buf += CHAR_BORDER;
} else {
self.display_buf += &format!("{:^8}", "");
}
}
self.display();
}
fn skip_lines(&mut self, data: &mut dyn DataSource) -> Result<()> {
trace!(buf = format!("{:?}", self.buf), "found a duplicating line");
let start_line = self.data_idx;
while self.buf[0] == self.buf[1] && self.len == BYTES_PER_LINE {
self.rd_data(data)?;
}
self.display_buf += &format!(
"******** {LINE_SEP_VERT} {:<49}",
format!(
"(repeats {} lines)",
self.data_idx - start_line / (BYTES_PER_LINE) + 1
)
);
if self.chars {
self.display_buf += &format!("{LINE_SEP_VERT}");
}
trace!(
buf = format!("{:X?}", self.buf),
"dumping buf after line skip"
);
self.alt_buf ^= 1; // read into the other buf, so we can check for sameness
self.display();
Ok(())
}
pub fn dump(&mut self, data: &mut dyn DataSource) -> Result<()> {
// skip a given number of bytes
if self.skip > 0 {
data.skip(self.skip)?;
self.rd_counter += self.skip;
debug!(
data_idx = self.data_idx,
"Skipped {}",
humanbytes(self.skip)
);
}
// print the head
self.display_buf += &format!("DATA IDX {LINE_SEP_VERT} DATA AS HEX");
if self.chars {
self.display_buf += &format!("{:width$} {LINE_SEP_VERT} DATA AS CHAR", "", width = 37);
}
self.display();
self.sep();
// data dump loop
self.rd_data(data)?;
self.data_idx = 0;
while self.len > 0 || self.first_iter {
self.first_iter = false;
self.dump_a_line();
// loop breaker logic
if self.stop || self.len < BYTES_PER_LINE {
break;
}
self.rd_data(data)?;
// after line logic
if self.buf[0] == self.buf[1] && self.len == BYTES_PER_LINE && !self.show_identical {
self.skip_lines(data)?;
}
}
self.data_idx += BYTES_PER_LINE;
self.sep();
self.display_buf += &format!(
"{:08X} {LINE_SEP_VERT} read total:\t\t {:<8} {:<15}",
self.rd_counter,
humanbytes(self.rd_counter),
format!("({} B)", self.rd_counter)
);
if self.chars {
self.display_buf += &format!("{LINE_SEP_VERT}");
}
self.display();
Ok(())
}
#[inline]
fn adjust_counters(&mut self) {
self.rd_counter += self.len;
self.data_idx += self.len;
}
fn rd_data(&mut self, data: &mut dyn DataSource) -> Result<()> {
match data.read(&mut self.buf[self.alt_buf]) {
Ok(mut len) => {
if self.limit != 0 && self.rd_counter + (BYTES_PER_LINE - 1) >= self.limit {
len = self.limit % BYTES_PER_LINE;
self.stop = true;
}
self.len = len;
self.adjust_counters();
return Ok(());
}
Err(err) => {
error!("error while reading data: {err}");
bail!(err)
}
}
}
}
pub trait DataSource: Read {
fn skip(&mut self, length: usize) -> std::io::Result<()>;
}
impl DataSource for std::io::Stdin {
fn skip(&mut self, _length: usize) -> std::io::Result<()> {
warn!("can't skip bytes for the stdin!");
Ok(())
}
}
impl DataSource for std::fs::File {
fn skip(&mut self, length: usize) -> std::io::Result<()> {
self.seek(SeekFrom::Current(length as i64))?;
// returns the new position from the start, we don't need it here.
Ok(())
}
}
fn mask_chars(c: char) -> char {
if c.is_ascii_graphic() {
return c;
} else if c == '\n' {
return '↩';
} else if c == ' ' {
return '␣';
} else if c == '\t' {
return '⭾';
} else {
return '<27>';
}
}

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@ -1,62 +1,33 @@
//! # Executable for the hedu submodule
//!
//! Dump data to a fancy format.
//// ATTRIBUTES ////////////////////////////////////////////////////////////////////////////////////
// we want docs
#![warn(missing_docs)]
#![warn(rustdoc::missing_crate_level_docs)]
// we want Debug everywhere.
#![warn(missing_debug_implementations)]
// enable clippy's extra lints, the pedantic version
#![warn(clippy::pedantic)]
//// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
use std::{fs::File, io::IsTerminal, path::PathBuf};
use libpt::{bintols::hedu::*, log::*};
use libpt::log::*;
use clap::Parser;
use clap_verbosity_flag::{InfoLevel, Verbosity};
use std::{fs::File, io::IsTerminal, path::PathBuf};
mod dumper;
use dumper::*;
//// TYPES /////////////////////////////////////////////////////////////////////////////////////////
//// CONSTANTS /////////////////////////////////////////////////////////////////////////////////////
/// short about section displayed in help
const ABOUT_ROOT: &'static str = r##"
Dumps data in fancy formats.
"##;
/// longer about section displayed in help, is combined with [the short help](ABOUT_ROOT)
static LONG_ABOUT_ROOT: &'static str = r##"
libpt is a personal general purpose library, offering this executable, a python module and a
dynamic library.
"##;
//// STATICS ///////////////////////////////////////////////////////////////////////////////////////
//// MACROS ////////////////////////////////////////////////////////////////////////////////////////
//// ENUMS /////////////////////////////////////////////////////////////////////////////////////////
//// STRUCTS ///////////////////////////////////////////////////////////////////////////////////////
/// defines CLI interface
#[derive(Debug, Clone, Parser)]
#[command(
author,
version,
about = ABOUT_ROOT,
long_about = format!("{}{}", ABOUT_ROOT ,LONG_ABOUT_ROOT),
help_template =
r#"{about-section}
about,
long_about,
help_template = r#"{about-section}
{usage-heading} {usage}
{all-args}{tab}
libpt: {version}
autocrate: {version}
Author: {author-with-newline}
"#
)]
/// Hexdumper written in Rust
pub struct Cli {
// clap_verbosity_flag seems to make this a global option implicitly
/// set a verbosity, multiple allowed (f.e. -vvv)
@ -89,11 +60,6 @@ pub struct Cli {
pub data_source: Vec<String>,
}
//// IMPLEMENTATION ////////////////////////////////////////////////////////////////////////////////
//// PUBLIC FUNCTIONS //////////////////////////////////////////////////////////////////////////////
//// PRIVATE FUNCTIONS /////////////////////////////////////////////////////////////////////////////
fn main() {
let mut cli = cli_parse();
let mut sources: Vec<Box<dyn DataSource>> = Vec::new();
@ -150,7 +116,7 @@ fn main() {
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
fn cli_parse() -> Cli {
let cli = Cli::parse();
let ll: Level = match cli.verbose.log_level().unwrap().as_str() {