| Type: | Package |
| Title: | Check Text Files Content at a Glance |
| Version: | 0.1.2 |
| Description: | Tools to help text files importation. It can return the number of lines; print the first and last lines; convert encoding. Operations are made without reading the entire file before starting, resulting in good performances with large files. This package provides an alternative to a simple use of the 'head', 'tail', 'wc' and 'iconv' programs that are not always available on machine where R is installed. |
| BugReports: | https://github.com/davidgohel/fpeek/issues |
| URL: | https://github.com/davidgohel/fpeek |
| License: | MIT + file LICENSE |
| Encoding: | UTF-8 |
| Imports: | Rcpp (≥ 0.12.12) |
| LinkingTo: | Rcpp |
| RoxygenNote: | 7.1.1 |
| Suggests: | testthat, covr |
| NeedsCompilation: | yes |
| Packaged: | 2021-03-31 15:28:43 UTC; davidgohel |
| Author: | David Gohel [aut, cre] |
| Maintainer: | David Gohel <david.gohel@ardata.fr> |
| Repository: | CRAN |
| Date/Publication: | 2021-03-31 16:20:02 UTC |
number of lines of a file
Description
return the number of lines found in a file. Operation is counting the number of new line symbols in the file.
Usage
peek_count_lines(path, with_eof = FALSE)
Arguments
path |
file path |
with_eof |
count the end of file as a new line. |
Value
number of lines as an integer
Examples
f <- system.file(package = "fpeek",
"datafiles", "cigfou-ISO-8859-1.txt")
peek_count_lines(f)
print the first lines of files
Description
print the first n lines
of a file.
Usage
peek_head(path, n = 10, intern = FALSE)
Arguments
path |
file path |
n |
number of lines to print |
intern |
a logical which indicates whether to capture the output as an R character vector or to print the output in the R console. |
Examples
f <- system.file(package = "fpeek",
"datafiles", "cigfou-ISO-8859-1.txt")
peek_head(f, n = 4)
peek_head(f, n = 4, intern = TRUE)
Converts encoding of characters
Description
Read a file, convert the encoding of characters and print the result.
Usage
peek_iconv(path, from, to = "UTF-8", newfile = NULL)
Arguments
path |
file path |
from |
the code set in which the input is encoded. |
to |
the code set to which the output is to be converted. |
newfile |
result file. Default to NULL. If null the result will be print in the R console, otherwise a file is produced containing the result. |
Examples
la_cigale <- system.file(package = "fpeek", "datafiles",
"cigfou-ISO-8859-1.txt")
peek_head(la_cigale)
peek_iconv(la_cigale, from = "ISO-8859-1", to = "UTF-8")
newfile <- tempfile()
peek_iconv(la_cigale, from = "ISO-8859-1", to = "UTF-8",
newfile = newfile)
peek_head(newfile, n = 10)
print the last lines of files
Description
print the last n lines
of a file.
Usage
peek_tail(path, n = 10, intern = FALSE)
Arguments
path |
file path |
n |
number of lines to print |
intern |
a logical which indicates whether to capture the output as an R character vector or to print the output in the R console. |
Examples
f <- system.file(package = "fpeek",
"datafiles", "cigfou-ISO-8859-1.txt")
peek_tail(f, n = 4)
peek_tail(f, n = 4, intern = TRUE)