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ZipSource

ZIP File Source

Description

Create a ZIP file source.

Usage

ZipSource(zipfile,
          pattern = NULL,
          recursive = FALSE,
          ignore.case = FALSE,
          mode = "text")

Arguments

`zipfile`	A character string with the full path name of a ZIP file.
`pattern`	an optional regular expression. Only file names in the ZIP file which match the regular expression will be returned.
`recursive`	logical. Should the listing recurse into directories?
`ignore.case`	logical. Should pattern-matching be case-insensitive?
`mode`	a character string specifying if and how files should be read in. Available modes are: `""` No read. In this case `getElem` and `pGetElem` only deliver URIs. `"binary"` Files are read in binary raw mode (via `readBin`). `"text"` Files are read as text (via `readLines`).

Details

A ZIP file source extracts a compressed ZIP file via unzip and interprets each file as a document.

Value

An object inheriting from ZipSource, SimpleSource, and Source.

Examples

zipfile <- tempfile()
files <- Sys.glob(file.path(system.file("texts", "txt", package = "tm"), "*"))
zip(zipfile, files)
zipfile <- paste0(zipfile, ".zip")
Corpus(ZipSource(zipfile, recursive = TRUE))[[1]]
file.remove(zipfile)

tm

Text Mining Package

v0.7-8

GPL-3

Authors

Ingo Feinerer [aut, cre] (<https://orcid.org/0000-0001-7656-8338>), Kurt Hornik [aut] (<https://orcid.org/0000-0003-4198-9911>), Artifex Software, Inc. [ctb, cph] (pdf_info.ps taken from GPL Ghostscript)

Initial release

2020-11-17