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Need help replacing quotes
Post 302493507 by malcomex999 on Thursday 3rd of February 2011 01:46:15 AM
02-03-2011
Quote:
Fantastic malcomex999
But please clarify me few things in your code.
a) what does 'x' signify here? I am not seeing it is declared/initialized elsewhere
b) How can I use the the pattern, single quotes inside the gsub() instead of declaring a variable separately for the purpose of it?
c) One of the element in the array is having '11', but we just have the character class pattern /[0-9]/ to match this '11' instead of the multi-pattern /[0-9]*/. How this works for the multiple instances of the same pattern (i.e) digit?
d) Finally, if I want to remove the "if" statement and to make it simple with just $i ~ /[0-9], how to re-arrange the syntax?
But please clarify me few things in your code.
a) what does 'x' signify here? I am not seeing it is declared/initialized elsewhere
b) How can I use the the pattern, single quotes inside the gsub() instead of declaring a variable separately for the purpose of it?
c) One of the element in the array is having '11', but we just have the character class pattern /[0-9]/ to match this '11' instead of the multi-pattern /[0-9]*/. How this works for the multiple instances of the same pattern (i.e) digit?
d) Finally, if I want to remove the "if" statement and to make it simple with just $i ~ /[0-9], how to re-arrange the syntax?
b) gsub(/\047/,x,$i)
c) $i ~ /[0-9]/ matches any digit found in the element. i.e, it matches 11,a11,11a,1a1,aa1. So, it matches in the element that include any digit(0-9).
d) You may need to find a way for that.
This User Gave Thanks to malcomex999 For This Post:
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LEARN ABOUT OPENSOLARIS
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1) NAME
ppmtosixel - convert a portable pixmap into DEC sixel format SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC LJ250 color inkjet printer. If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file. OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com- pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni- tude larger than a compressed file and prints much slower. -margin If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci- fied, a 1.5 inch left margin will offset the image. PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?. BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation. SEE ALSO
ppm(5) AUTHOR
Copyright (C) 1991 by Rick Vinci. 26 April 1991 ppmtosixel(1)