curses - Display inverse video text with python on terminal -


python has curses module. there simple way use module display inverse video text? don't want full-blown curses application, want text bring inverse (or in color).

if use filter function (before initscr), curses application update current line of screen (and not clear whole screen). minimal use of curses library.

if want lower-level (no optimization, yourself), have use terminfo level of library, i.e., these functions:

  • initscr filter (since python curses apparently has no interface newterm)
  • tigetstr read capabilities sgr, sgr0, smso, rmso, rev
  • tparm format parameters sgr if use that
  • putp write strings read/formatted via tigetstr , tparm

the page python curses.tigetstr examples has (mostly incomplete) examples using tigetstr, , reminds me use setupterm alternative newterm. if visit page searching "curses.filter", asserts there examples of use, reading, found nothing report.

further reading:

a demo reverse-video:

import curses  curses.filter() stdscr = curses.initscr() stdscr.addstr("normal-") stdscr.addstr("hello world!", curses.a_reverse) stdscr.addstr("-normal") stdscr.refresh() curses.endwin() print

or

import curses  curses.setupterm() curses.putp("normal-") curses.putp(curses.tigetstr("rev")) curses.putp("hello world!") curses.putp(curses.tigetstr("sgr0")) curses.putp("-normal")

illustrates point: text written curses.putp bypasses curses library optimization. use initscr or newterm use curses screen-optimization, setupterm not use it, using low-level capability- , output-functions.


Comments

Post a Comment

Popular posts from this blog

Redirect to a HTTPS version using .htaccess -

i need modify .htaccess file redirect urls https version without "www". http://example.com --> https://example.com http://www.example.com --> https://example.com https://www.example.com --> https://example.com this how .htaccess file looks like: rewriteengine on rewritecond %{request_filename} !-d rewritecond %{request_filename} !-f rewriterule ^(.*)$ redirect.php?id=$1&page=$2 [qsa,l] what modifications need make .htaccess in order forward https without "www"? it depends on doing current code. looks file called redirect trying display php page seo friendly url. think might confusing people. anyway, need , force https without www, need 1 more rule above. also second rule needs two capture groups in rewriterule test string because wanting 2 different values using $1 , $2 references. rewriteengine on #rediect www non www and/or http https --- combinations. rewritecond %{http_host} !^example\.com [nc,or] rewritecond %{https} !^...
Read more

Unlimited choices in BASH case statement -

consider simple bash snippet: case $option in 1) image=${options[0]%.tar} ;; 2) image=${options[1]%.tar} ;; 3) image=${options[2]%.tar} ;; 4) image=${options[3]%.tar} ;; *) echo "invalid option" exit 1 esac in real script numbers goes 30. makes pretty long. can somehow specify cases variable? something this: case $option in $i) image=${options[$(($i-1))]%.tar} any pointer appreciated. you can match against multiple patterns in single clause: case $option in 1|2|3: echo "$option one, 2 or three" ;; esac if still typing you, can use simple pattern matching: case $option in # following matches # - single-digit numbers 0-9 # - two-digit numbers starting either 1 or 2 # - number 30 [0-9]|[12][0-9]|30) image=${options[$(($option-1))]%.tar} ;; *) echo "invalid option" 1>&2 exit 1 esac
Read more

javascript - jQuery: Add class depending on URL in the best way -

i have html progress meter: <div class="col-md-3" style="margin-left: -20px;"> <div class="progress-pos active" id="progess-1"> <div class="progress-pos-inner"> login </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-2"> <div class="progress-pos-inner"> scan items </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-3"> <div class="progress-pos-inner"> confirm address </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-4"> <div class="progress-pos-in...
Read more