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paperkey: simplify block generation

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the chunk-iterator already does exactly what we want here..

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This commit is contained in:
Fabian Grünbichler 2021-02-01 14:06:17 +01:00 committed by Dietmar Maurer
parent 5dae81d199
commit c2113a405e
1 changed files with 8 additions and 24 deletions
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32
src/tools/paperkey.rs
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@ -113,26 +113,18 @@ fn paperkey_html<W: Write>(
if is_master {
const BLOCK_SIZE: usize = 20;
let blocks = (lines.len() + BLOCK_SIZE -1)/BLOCK_SIZE;
for i in 0..blocks {
let start = i*BLOCK_SIZE;
let mut end = start + BLOCK_SIZE;
if end > lines.len() {
end = lines.len();
}
let data = &lines[start..end];
for (block_nr, block) in lines.chunks(BLOCK_SIZE).enumerate() {
writeln!(output, "<div style=\"page-break-inside: avoid;page-break-after: always\">")?;
writeln!(output, "<p>")?;
for l in start..end {
writeln!(output, "{:02}: {}", l, lines[l])?;
for (i, line) in block.iter().enumerate() {
writeln!(output, "{:02}: {}", i + block_nr * BLOCK_SIZE, line)?;
}
writeln!(output, "</p>")?;
let qr_code = generate_qr_code("svg", data)?;
let qr_code = generate_qr_code("svg", block)?;
let qr_code = base64::encode_config(&qr_code, base64::STANDARD_NO_PAD);
writeln!(output, "<center>")?;
@ -192,20 +184,12 @@ fn paperkey_text<W: Write>(
if is_private {
const BLOCK_SIZE: usize = 5;
let blocks = (lines.len() + BLOCK_SIZE -1)/BLOCK_SIZE;
for i in 0..blocks {
let start = i*BLOCK_SIZE;
let mut end = start + BLOCK_SIZE;
if end > lines.len() {
end = lines.len();
for (block_nr, block) in lines.chunks(BLOCK_SIZE).enumerate() {
for (i, line) in block.iter().enumerate() {
writeln!(output, "{:-2}: {}", i + block_nr * BLOCK_SIZE, line)?;
}
let data = &lines[start..end];
for l in start..end {
writeln!(output, "{:-2}: {}", l, lines[l])?;
}
let qr_code = generate_qr_code("utf8i", data)?;
let qr_code = generate_qr_code("utf8i", block)?;
let qr_code = String::from_utf8(qr_code)
.map_err(|_| format_err!("Failed to read qr code (got non-utf8 data)"))?;
writeln!(output, "{}", qr_code)?;