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  Help Page - chap

( 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 chap Purpose Editor - Character appender Aliases characterappender, charapp, chap Syntax chap [ <options> ] " [<start_bounder>] <n> [<end_bounder>] " " <append_string> " <input_string> Options -p Preserve the input string. Without this option, the <append_string> is appended into <input_string>. With this option, the <input_string> is left unchanged. -n Consider non-printable characters. This option is useful if you wish to see formating and other special characters within a string. 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 will produce errors. In case of a str constant or a str expression, the -p option is assumed. <n> The instance number. The input string will be searched for this instance of the target. Instances are counted from 1. <n> must be either a number higher than 0 or the letter l (which indicates the last instance). <start_bounder> <end_bounder> This argument can either be absent, the character [ or the character ]. The <start_bounder> appears before the <n>. The <end_bounder> appears after the <n>. We will now explain the role of these bounders with an example. We will assume that we are looking for fifth character. "5" Target instance is only the fifth character. "5[" Target instance is everything after but excluding the fifth character. "5]" Target instance is everything upto and including the fifth character. "[5" Target instance is everything beginning with and including the fifth character. "[5[" This combination is INVALID. "[5]" Target instance is only the fifth character. This is same as "5". "]5" Target instance is everything upto but excluding the fifth character. "]5[" Target instance is everything outside but excluding the fifth character. "]5]" This combination is INVALID. In all VALID cases, the <append_string> is appended AFTER the target instance. The quotes in the command syntax are required. Without the double quotes, an error or erroneous output may be produced. <append_string> The string to append after the target instance. Stream Input Stream input is ignored. Stream Output The original input along with appended content is added to stream output. Stream Error Any errors are listed here. Description The command appends the <append_string> after the target instance. The command CAN ALSO BE USED WITH FILES. Simply read in the contents of the file using the repro command into a str variable. Perform any desired operations on the str variable, then write the str variable back to the file. The following is an example. var str content # Read file. repro myfile.html > $content # Perform the desire operations on $content. . . . # Write the resulting str variable back to file. echo $content >myfile.html This can also work on a collections of files, from which we want to operate on one file at a time. Let's say that we have a list of files in a str variable $fileList. The following is an example of how to do this. var str fileList # Collect the list of file in $fileList. . . . # Operate on files one by one. var str file # Get the first file. lex "1" $fileList > $file while ($file <> "") do # Operate on this file. var str content # Read file. repro $file > $content # Operate on file content. . . . # Write the resulting content back to file. echo $content > { echo $file } # Get the next file. lex "1" $fileList > $file done Note that the output of the echo $content command is redirected to { echo $file } which will actually write the output to the file. If we had redirected the output of the echo $content command to just $file, that would have written the output to the variable $file itself, and not to the actual file whose name is in $file. Restrictions None. Valid Examples var str s ... chap "1" " was the first character." $s Will append " was the first character." after the first character. Invalid Examples var int i ... chap "1" " was the first character." $i Will produce error. Variable $i is not a str variable. See Also systemvar var echo escape chen chex chin chal sap lap wap

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