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pr: print only 28 lines if double spaced option is used

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tilakpatidar 2018-12-12 23:38:59 +05:30 committed by Max Semenik
parent 9a3c572de8
commit 55043d7a15
1 changed files with 13 additions and 3 deletions
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16
src/pr/pr.rs
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@ -44,6 +44,7 @@ struct OutputOptions {
/// Line numbering mode
number: Option<NumberingMode>,
header: String,
double_space: bool,
line_separator: String,
last_modified_time: String,
start_page: Option<usize>,
@ -253,12 +254,16 @@ fn build_options(matches: &Matches, header: &String, path: &String) -> Result<Ou
return None;
});
let line_separator: String = if matches.opt_present("d") {
let double_space = matches.opt_present(DOUBLE_SPACE_OPTION);
let line_separator: String = if double_space {
"\n\n".to_string()
} else {
"\n".to_string()
};
let last_modified_time = if path.eq(FILE_STDIN) {
current_time()
} else {
@ -290,6 +295,7 @@ fn build_options(matches: &Matches, header: &String, path: &String) -> Result<Ou
Ok(OutputOptions {
number: numbering_options,
header: header.to_string(),
double_space,
line_separator,
last_modified_time,
start_page,
@ -317,9 +323,13 @@ fn pr(path: &str, options: &OutputOptions) -> Result<i32, PrError> {
let mut i = 0;
let mut page: usize = 0;
let mut buffered_content: Vec<String> = Vec::new();
let lines_per_page = if options.as_ref().double_space {
CONTENT_LINES_PER_PAGE / 2
} else {
CONTENT_LINES_PER_PAGE
};
for line in BufReader::with_capacity(READ_BUFFER_SIZE, open(path)?).lines() {
if i == CONTENT_LINES_PER_PAGE {
if i == lines_per_page {
page = page + 1;
i = 0;
print_page(&buffered_content, options, &page)?;