scriptSearch: Search R scripts for text

Description

Returns a list of text matches in the scripts in a directory.

Usage

scriptSearch(pattern, path = ".", subdirs = TRUE, suffix = "\\.[rR]$", commentsIncluded = FALSE, ..., verbose = FALSE)

Arguments

pattern

character string containing a regular expression (this is the argument of the same name for grep).

path

a character string giving the (relative) path of the directory holding the R scripts.

subdirs

logical value: if TRUE, then subdirectories of path are also searched.

suffix

a character string restricting the files to be searched.

commentsIncluded

logical value: if FALSE, then lines beginning with the hash symbol are ignored.

...

additional arguments to grep may be given -- the most likely possibilities are ignore.case, perl and fixed.

verbose

logical value: if TRUE, then the names of the scripts being searched are printed. The full name of this argument needs to be given -- no abbreviation is allowed.

Value

a list: the names are equal to the file names containing matches, and each component is a character vector of the whitespace-trimmed lines in the file that match the pattern.

Limitations

Using commentsIncluded=FALSE does not preclude a match being declared when it is in a comment not starting the line.

Details

The default suffix argument restricts the search to R scripts. An R script is considered to be a file that ends in dot-R, where the "R" can be lowercase or uppercase.

Examples

Run this code

## Not run: 
# scriptSearch("list.files")
# scriptSearch("garch", "~/../burns-stat3/webpages/blog")
# 
# # search for an assignment
# # ' *' means zero or more spaces
# scriptSearch("specialObject *<- ", "~/myScriptDirectory", subdirs=FALSE)
# 
# # search COBOL files
# scriptSearch("blah", suffix="\\.cbl$")
# 
# ## End(Not run)

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