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- The grep routines were from the October 1984 Dr. Dobbs.
- It has five parts (1) tools.h (2) tools.c (3) grep.c (4) bitmap.c (5) queue.c.
- I put in the update from the June 1985 Dr.Dobbs that utilized the bitmaps and
- queue routines.
-
- Since I hand entered these routines I did not put in the comments; If you are
- interested look up a back issue. It was compiled under MSC 4.0, with modified
- startup routines to use wild card expansion from the command line, and double
- quote mechanism. The routines have been modified slightly I took out the
- references to CPM in the different files.
-
- In other words if you say grep "this is one arg" filename
- there are three arguements.
- To pass quotes in the pattern use a backslash and quote,
- grep "\"this puts a quote in the pattern\""
-
- Hope this is not too unclear.
-
- The flags are:
- -v all lines but thos matching are printed
- -c only a count of the matching lines are printed
- -l the name of the files withe matching lines are listed (once)
- seperated by newlines.
- -n each line is preceded by its line number in the file
- -h do not print filename headers with output lines
- -y all characters in the file are mapped to upper case before
- matching
- -e <expression> same as a simple expression, useful if the
- expression begins with a '-'
- -f <file> the regular expression is taken from the file. If
- several regular expressions are listed (seperated by
- newlines or | 's) then a match will be flagged if any of
- the regular expressions are satisfied.
- -e and -f are mutually exclusive, if -f is given, any regular
- expression on the command line is toaken to be a filename.
-
-
-
- example: grep -n "^[a-z][a-z]*[\s\t]*.*([^;]*)[^;]*$" <file list>
- this creates a cross reference of a C program, file list
- to be replaced by name name name or name.* or some such
- combination. If the pattern is in a file '-f' don' use the
- surrounding double quotes.
-
- example: grep -n "TRUE|FALSE|MAYBE" <file list>
- this looks for the pattern TRUE or FALSE or MAYBE at the same
- time.
-
- All features of the unix version of grep are supported except the -s, -x and
- -b options and the metacharacters (,),+ and ?.
-
- This was done when version 7 was the prevelant version of unix.
-
- If you dont want to use this as grep the routines may be useful in their own
- right in an editor or whatever way that you want to use them.
-
- Have Fun
-
- Don
-