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skip line counting

This commit is contained in:
Christoph J. Scherr 2024-01-16 19:03:56 +01:00
parent 15687ca0d7
commit 521ae9a193
Signed by: PlexSheep
GPG Key ID: 7CDD0B14851A08EF
1 changed files with 18 additions and 12 deletions
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30
members/libpt-hedu/src/lib.rs
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@ -7,7 +7,7 @@
use anyhow::{bail, Result};
use libpt_bintols::display::{bytes_to_bin, humanbytes};
use libpt_log::{error, info, trace, warn};
use libpt_log::{error, info, trace, warn, debug};
use std::io::{prelude::*, BufReader, Read, SeekFrom};
const BYTES_PER_LINE: usize = 16;
@ -39,17 +39,21 @@ impl DataSource for std::fs::File {
}
pub fn dump(data: &mut dyn DataSource, config: DumpConfig) -> Result<()> {
// prepare some variables
let mut buf: [[u8; BYTES_PER_LINE]; 2] = [[0; BYTES_PER_LINE]; 2];
let mut alt_buf = 0usize;
let mut byte_counter: usize = 0;
let mut len: usize;
// skip a given number of bytes
if config.skip > 0 {
data.skip(config.skip)?;
info!("Skipped {}", humanbytes(config.skip));
byte_counter += config.skip;
debug!("Skipped {}", humanbytes(config.skip));
}
let mut buf: [[u8; BYTES_PER_LINE]; 2] = [[0; BYTES_PER_LINE]; 2];
let mut alt_buf = 0usize;
let mut line_counter: usize = 0;
let mut len: usize;
// print the head
print!("LINE IDX {LINE_SEP_VERT} DATA AS HEX");
print!("DATA IDX {LINE_SEP_VERT} DATA AS HEX");
if config.chars {
print!("{:width$} {LINE_SEP_VERT} FOO", "", width = 37);
}
@ -59,10 +63,11 @@ pub fn dump(data: &mut dyn DataSource, config: DumpConfig) -> Result<()> {
} else {
println!("{}", format!("{LINE_SEP_HORIZ}").repeat(59));
}
// data dump loop
len = rd_data(data, &mut buf, &mut alt_buf).unwrap();
while len > 0 {
print!("{:08X} {LINE_SEP_VERT} ", line_counter);
print!("{:08X} {LINE_SEP_VERT} ", byte_counter);
for i in 0..len {
if i as usize % BYTES_PER_LINE == BYTES_PER_LINE / 2 {
print!(" ");
@ -85,19 +90,20 @@ pub fn dump(data: &mut dyn DataSource, config: DumpConfig) -> Result<()> {
}
print!("|");
}
line_counter += 1;
byte_counter += 1;
println!();
len = rd_data(data, &mut buf, &mut alt_buf).unwrap();
alt_buf ^= 1; // toggle the alt buf
if buf[0] == buf[1] && len == BYTES_PER_LINE && !config.show_identical {
trace!(buf = format!("{:?}", buf), "found a duplicating line");
let start_line = line_counter;
let start_line = byte_counter;
while buf[0] == buf[1] && len == BYTES_PER_LINE {
len = rd_data(data, &mut buf, &mut alt_buf).unwrap();
line_counter += 1;
byte_counter += 1;
}
println!(
"^^^^^^^^ {LINE_SEP_VERT} (repeats {} lines)",
line_counter - start_line
byte_counter - start_line
);
}
// switch to the second half of the buf, the original half is stored the old buffer