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  Help Page - chen

( Some help pages may not display correctly in html because those help pages may have sample code
in them, part of which may be mis-interpreted as html tags.

All help pages, including this help page, are available in biterScripting with the help command. )




Command chen Purpose Editor - Character enumerator or counter Aliases charenumerator, charenum, chen Syntax chen [ <options> ] <input_string> Options -n Count non-printable characters. Without this option, non-printable characters are not considered. Arguments <input_string> The input string on which this command will operate. It can be specified as a str constant or str variable or an expression resulting in a str value. If a str constant is used, we highly recommend using double quotes around it, such as "John Doe". Without the double quotes, the spaces in the input string may produce errors or erroneous output. Stream Input Stream input is ignored. Stream Output The number of characters found are written here. Stream Error Any errors are listed here. Description The command enumerates (or counts) characters in the <input_string> and writes the count to the stream output or redirected output target. The command CAN ALSO BE USED WITH FILES. Simply read in the contents of the file using the repro command into a str variable, then use that str variable as <input_string>. Restrictions None. Valid Examples Assume that you want to count characters in a file myfile.js. var str content repro myfile.js >$content chen -n $content The above code will produce the number of all characters (including nonprintable characters) in file myfile.js. To count just the printable characters, do NOT use the -n option, as follows. chen $content Invalid Examples chen "myfile.js" Will produce 9. That's because myfile.js will be taken verbatim as <input_string>, and there are 9 characters in that string. chen { repro myfile.js } Will also produce erroneous results. The inline command { repro myfile.js } will execute and bring out its output as part of the command line for chen. The chen comand will then consider the first word of the output as <input_string>. So, the command will output the number of characters in the first word in the file. To correctly count the number of characters in myfile.js, use the code listed above under Valid Examples. See Also systemvar var echo escape chex chin chap chal sen len wen

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