search.for.regexpr {mvbutils}

Find functions/objects/flatdoc-documentation containing a regexp.

Description

Search one or more environments for objects that contain a regexp. Within each environment, check either (i) all functions, or (ii) the "doc" attributes of all functions, plus any character objects whose name ends in ".doc" or matches a specified regexp.

Usage

search.for.regexpr( pattern, where=1, lines=FALSE, doc=FALSE, code.only=FALSE, ...)

Arguments

pattern

the regexp

where

an environment, something that can be coerced to an environment (so the default corresponds to .GlobalEnv), or a list of environments or things that can be coerced to environments.

lines

if FALSE, return names of objects mentioning the regexp. If TRUE, return the actual lines containing the regexp.

doc

if FALSE, search function source code only. Otherwise, search the usual flatdoc places, i.e. "doc" attributes of functions, and certain character objects. If doc==TRUE, the name of those objects must end in ".doc"; otherwise, if doc is a string (length-1 character vector), then the names of the character object must grep that string; hence, doc="[.]doc$" is equivalent to doc=TRUE.

code.only

if FALSE, search only the deparsed version of "raw" code, so ignoring e.g. comments and "flatdoc" documentation

...

passed to grep– e.g. "fixed", "ignore.case".

Value

A list with one element per environment searched, containing either a vector of object names that mention the regexp, or a named list of objects & the actual lines mentioning the regexp.

See Also

flatdoc, find.docholder, find.documented

Examples

## Not run: 
# On my own system's ROOT task (i.e. workspace--- see ?cd)
search.for.regexpr( 'author', doc=FALSE)
# $.GlobalEnv
# [1] "cleanup.refs"
# the code to function 'cleanup.refs' contains "author"
search.for.regexpr( 'author', doc=TRUE)
# $.GlobalEnv
# [1] "scrunge"
# 'scrunge' is a function with a character attribute that contains "author"
search.for.regexpr( 'author', doc='p')
#$.GlobalEnv
# [1] "scrunge" "p1"      "p2"
## 'scrunge' again, plus two character vectors whose names contain 'p'

## End(Not run)