AwkChannelWiki: Search for: "length"

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AA-awk-history
http://awk.freeshell.org/AA-awk-history\\ a concise history of awk and some of its forks\\ {{{ common . . .   variables: ARGC ARGV FNR RSTART RLENGTH SUBSEP\\       keywords: . . .
2K - last updated 2013-10-26 02:28 UTC by g0ph3r

Adler32Checksum
As documented in the [[http://en.wikipedia.org/wiki/Adler-32 | Adler-32 Wikipedia article]]. {{{ awk . . . if awk could # allow such a thing. len = length(str) while (++i <= len) { b += (a += ord[substr(str,i,1)]) . . .
4K - last updated 2008-12-31 12:05 UTC by pgas

ArrayLength
Posix does not define a way to get the length of an array, while you could use a loop to count the elements . . . the usual strategy is to keep track of the length yourself. {{{ awk #using a counter a[n++]="foo" . . . a[n++]="bar" printf "the length of a is %d\n",n #remember that split returns . . . a value n=split("foo bar",a) printf "the length of a is %d\n",n # loop on the elements of a . . . # you don't always no need to know the length! for (i in a) print a[i] }}} Some awk implementations . . .
2K - last updated 2009-02-09 09:45 UTC by arnold.robbins

awk benchmarks
post awk benchmarks here:\\ see http://awk.freeshell.org/awk.exe for awks used here.\\ {{{awk C:\#> . . . ARGV[0],n,i,length(s));while(n--)m=split(s,A,N);print(m,length(N))} . . . ARGV[0],n,i,length(s));while(n--)m=split(s,A,N);print(m,length(N))} . . .
1K - last updated 2012-08-26 14:21 UTC by g0ph3r

awk nawk oawk
in 1977 there was awk.\\ this page attempts to explain the history of awk.\\ the 1978 7th Edition awk(1) . . . match sub gsub\\ vars: ARC ARGV FNR RSTART RLENGTH SUBSEP\\ keywords: do delete function return\\ . . . posix character class names like [:digit:]\\ length(arrayname) \\ undocumented command line switch . . .
2K - last updated 2012-03-18 23:21 UTC by g0pher

AwkFeatureComparison
This page lists which awk implementations support which features. Additions and corrections are very . . . in POSIX mode|yes|no|no|no|unknown|no|yes|no| |=length(array)|no|yes (new in 3.1.5), but not in POSIX . . . %T",1)}' # 1970-01-01 00:00:01}}}| |=length(array)|{{{awk 'BEGIN{a[1]=10;a[2]=20;print length(a)}' . . .
4K - last updated 2015-04-27 13:23 UTC by pgas

AwkTips
<toc> ---- == Be idiomatic! In this paragraph, we give some hints on how to write more idiomatic . . . *"[^"]*" *,/); f=substr($0,RSTART,RLENGTH); # save what matched in sf gsub(/^ *"?|"? *,$/,"",f); . . . stuff print "Field " ++c " is " f; $0=substr($0,RLENGTH+1); # "consume" what matched } }}} As the complexity . . . {if(!j)t=$0;j=1}' file }}} That looks lengthy, and you have to read it two or three times . . .
31K - last updated 2009-03-24 16:54 UTC by waldner

CAWKLib
=CAWKLib CAWKlib is a library of functions for for awk intended to be used with preprocessors/wrappers . . . ## I thought "shebangawk" was quite lengthy and slightly vulgar # Initially the libraries . . . in CAWKlib as it is today arrays.awk: *ary_length() -- return the length of an array (meaning . . . -- repeat a string up to a certain length *str_reverse() -- revers a string *str_squeeze() . . . string inside the new string of the specified length shc_test.awk: *shc_test() -- low level wrapper . . .
5K - last updated 2015-01-29 10:14 UTC by 108-243-116-77.lightspeed.cicril.sbcglobal.net

Columnate
This script columnates the input file, so that columns line up like in the GNU column(1) command. Its . . . saves the line for (f=1; f<=NF; f++) { len = length($f) if (len>max[f]) max[f] = len # an array . . .
1K - last updated 2009-02-28 21:32 UTC by h-67-101-152-180.nycmny83.dynamic.covad.net

FindAllIndices
Sometimes it is useful to find the index of every occurrence of a given character in a string. Let's . . . chr, arr, i, j) { for (i = 1; i <= length(str); i++) if (substr(str, i, 1) == chr) arr[++j] . . .
2K - last updated 2011-07-05 10:53 UTC by pgas

FindAllMatches
This bit of code will match all non-overlapping instances of a given pattern in a string and will store . . . used if start[] is needed a = RSTART; b = RLENGTH # to avoid unexpected side effects while (match(str, . . . re) > 0) { arr[++j] = substr(str, RSTART, RLENGTH) # start[j]=RSTART+eaten # optional: save position . . . of match in the string # eaten+=(RSTART+RLENGTH-1) str = substr(str, RSTART+RLENGTH) } RSTART . . . = a; RLENGTH = b return j } }}} TODO: correctly handle 0-length . . .
2K - last updated 2009-03-24 09:46 UTC by waldner

FIXES
[[FIXES]]        revised:   . . .     a[1]...a[length(s)] with each character a single element.\\ . . . or fflush("") flushes all files and pipes.\\ length(arrayname) returns number of elements (Jan 1, . . .
6K - last updated 2014-01-15 23:17 UTC by g0ph3r

Frequently Asked Questions
Some entries of this page have been copied from the [[comp.lang.awk_FAQ]]([[http://awk.freeshell.org/comp.lang.awk_FAQ#toc29|Credits]]) . . . Edit this answer]] ---- == How do I find the length of an array? <include "ArrayLength"> [[http://awk.freeshell.org/?action=edit;id=ArrayLength| . . .
3K - last updated 2015-09-08 08:46 UTC by pgas

GeneralizedTextReplacement
Some times people need to recode in awk something they were previously doing with sed or another tool. . . . last=start[j]+length(mtch[j]) # build newstr = newstr + psep (part . . . g1=substr(mtch[i],RSTART,RLENGTH) match(mtch[i],/[0-9]$/); g2=substr(mtch[i],RSTART,RLENGTH) . . .
6K - last updated 2009-03-26 20:38 UTC by waldner

LastMatchOnLine
The function 'match' sets RSTART to the index of each match and RLENGTH to its length, and returns 0 . . . re)) { result = substr(line, RSTART, RLENGTH) line = substr(line, RSTART+RLENGTH) } return . . .
1K - last updated 2009-04-14 22:07 UTC by 216.162.199.202

length
== Usage == === length ([ STRING ]) === The **length** function returns the number of characters within . . . string [[argument]]: {{{ awk BEGIN { print length("Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch") . . .
1K - last updated 2011-06-25 05:11 UTC by pgas

LevenshteinEditDistance
The [http://en.wikipedia.org/wiki/Levenshtein_distance|Levenshtein edit distance] calculation is useful . . . 0 } else if (str1 == "" || str2 == "") { return length(str1 str2) } else if (substr(str1, 1, 1) == . . . a), substr(str2, a)) } else if (substr(str1, l1=length(str1), 1) == substr(str2, l2=length(str2), 1)) . . .
6K - last updated 2010-04-16 10:19 UTC by pgas

ListOfPastebins
This is a list of PasteBin URLs that have been used in #awk. There should be a much shorter list of recommended . . . and does not claim to hold pastes for any length of time. * http://internetworkpro.org/pastebin/ . . .
2K - last updated 2015-09-08 09:08 UTC by pgas

LshalOutputParser
=== Problem Specification 10:50 <Thanatermesis> i want to obtain the model of the disk, for example, . . . strings that are last on the line if (RLENGTH > 0) { type = substr($2, RSTART+1, RLENGTH-2) . . . to remove parentheses val = trim(substr($2, 1, (length($2) - RLENGTH))) # remove type info } else { . . . \ "storage.model" in PROPERTIES && \ length(PROPERTIES["storage.model"]) > 2) { printf . . .
3K - last updated 2008-06-27 16:22 UTC by gnomon

PasteBin
A PasteBin is a site that allows one to paste chunks of code or text. The snippet is given a unique URL . . . * http://gist.github.com There is a lengthy ListOfPastebins from which to choose. . . .
1K - last updated 2015-09-08 09:07 UTC by pgas

PrintASingleQuote
This question gets asked often enough that it deserves its own answer. This common question doesn't actually . . . sequence]]s are required to have a fixed length. {{{ awk 'BEGIN{print "\047foo!\047"}' }}} ==== . . .
5K - last updated 2015-07-05 09:45 UTC by pitman

PrintfDynamicWidth
With modern awks, you can just do it like you would in C (though the justification is less clear; C doesn't . . . {{{ awk maxlen=0 for (i in arr) if (maxlen<length(arr[i])) maxlen=length(arr[i]) for (i in arr) . . . {{{ awk maxlen=0 for (i in arr) if (maxlen<length(arr[i])) maxlen=length(arr[i]) printfstring="%-" . . .
1K - last updated 2008-11-24 08:26 UTC by pgas

PrintfDynamicWidthJapanese
With modern awks, you can just do it like you would in C (though the justification is less clear; C doesn't . . . {{{ awk maxlen=0 for (i in arr) if (maxlen<length(arr[i])) maxlen=length(arr[i]) for (i in arr) . . . {{{ awk maxlen=0 for (i in arr) if (maxlen<length(arr[i])) maxlen=length(arr[i]) printfstring="%-" . . .
1K - last updated 2008-11-24 08:36 UTC by pgas

RangeOfFields
Printing a range of fields - all fields but the first, for examples, or fields 3 through 8 - is a surprisingly . . . remove the front space with {{{ $0=substr($0, 1+length(OFS) * 2) }}}, another possibility is to shift . . . approach uses match() to get the position and length of each field separator, then substr() to either . . . (match(str, re)) { str = substr(str, RSTART + RLENGTH); # there's no FS left, therefore the range . . . to the output out = out substr(str, 1, RSTART + RLENGTH - 1); # remove the field from the line str = . . .
10K - last updated 2015-09-08 09:52 UTC by pgas

Recursively Include C headers
=== Problem Specification i want to generate one big .hpp file out of multiple .hpp files and want to . . . \ ]*"[^"]+"/)) { f = substr(line, RSTART, RLENGTH) sub(/^[ \t]*#include[ \t]*"/, "", f) sub(/"/, . . .
1K - last updated 2011-12-11 05:33 UTC by pgas

reverse
The [[awk]] extraction and reporting language does not provide a [[builtin]] function for reversing strings. . . . {{{ awk function reverse(s) { revs = "" for (l = length(s); l > 0 ; l--) { c = substr(s, l, 1) revs . . .
1K - last updated 2011-06-25 05:11 UTC by pgas

SedFAQ
<toc> ---- == I have a line like "abdcgfjeuPATTERNfjfhghj", I want to get the PATTERN part, why . . . the empty string "". Since the empty string has length 0, conventionally it matches "before" the beginning . . . into play in case many matches of different lengths are possible //**starting at that same position**//. . . . would be possible for /b*/: the empty string "" (length 0), "b" (length 1), "bb" (length 2), "bbb" (length . . . there is no alternative between different match lengths: only a match of length 0 is possible, and . . .
34K - last updated 2010-02-14 17:56 UTC by waldner

SimpleCalc
Simple 4 operations calculator ... {{{ awk # usage: print calc("5 * (1 + 2) * 5 + 7") # reads and update . . . /^[-+*/]/)) { t = substr(s[0], RSTART, RLENGTH) s[0] = substr(s[0], RLENGTH+1) return t } else . . . algorithm # result is in postfixed # return the length of the postfixed array function s_y( input, . . .
2K - last updated 2015-09-10 06:14 UTC by pgas

special variable
Some [[variable]] names have a special meaning to the awk interpreter. == List of special variables == . . . that specifies the output record separator | [[RLENGTH]] | An informative variable that provides the . . . length of the currently matched substring | [[RS]] . . .
2K - last updated 2011-06-25 05:46 UTC by pgas

string manipulation
* [[case conversion]] * [[length|Determine the length of a string]] * [[index|Determine the position . . .
1K - last updated 2011-07-04 22:12 UTC by markhobley

string manipulation function
The [[awk]] programming language provides a set of [[builtin]] functions for performing various string . . . operations: * [[gsub]] * [[index]] * [[length]] * [[match]] * [[split]] * [[sprintf]] * [[sub]] . . .
1K - last updated 2011-06-07 00:35 UTC by markhobley

substr
=== Removing the first and last characters from a string === The following [[script]] demonstrates how . . . the [[substr]] function and [[length]] functions can be combined to remove the first . . . remove the first letter print substr(mystring,1,length(mystring)-1) # remove the last character print . . . substr(mystring,2,length(mystring)-2) # remove both the first and last . . .
1K - last updated 2011-06-25 05:10 UTC by pgas

text.2.wiki.awk
#:       C:\#\awk\lib\text.2.wiki.awk\\ . . . s = substr($0, 1, length($0) - 1);\\       . . . s = substr(s, 1, length(s) - 2);\\               . . .
11K - last updated 2012-09-24 14:55 UTC by g0ph3r

text 2 wiki.awk
{{{ #: C:\#\lib\awk\utl\text_2_wiki.awk #: 2012-09-15 23:40:11 #:rod.t_2012 #: This file is http://awk.freeshell.org/text_2_wiki.awk . . . s = $0; } else if($0 ~ /`$/) { s = substr($0, 1, length($0) - 1); } else s = $0 "\\\\"; gsub("\t", " . . .
2K - last updated 2012-09-16 09:12 UTC by g0ph3r

tracert.awk
{{{ awk #:: C:\_\_u\tracert.awk #: 2014-07-06 19:47:02 #:: rod.t_2014 #:: extract basename for tracert . . . s = substr(s, RSTART, RLENGTH); s = (_cmd)s; print(" cmd =", (_q)(s)_q); if((! . . .
4K - last updated 2014-07-07 06:15 UTC by 212.205.56.222

WartAndWishList
Awk is a wonderful language! That said, there are a few annoying bits... == The Good * well-documented . . . strings stored as simple {ref-string, start, length} triples that point into other strings. This . . .
7K - last updated 2009-04-13 18:39 UTC by goedel

36 pages found.