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#
# Bdpar provide a tool to easily build customized data flows to pre-process
# large volumes of information from different sources. To this end, bdpar allows
# to (i) easily use and create new functionalities and (ii) develop new data
# source extractors according to the user needs. Additionally, the package
# provides by default a predefined data flow to extract and preprocess the most
# relevant information (tokens, dates, ... ) from some textual sources (SMS,
# email, YouTube comments).
#
# Copyright (C) 2020-2022 Sing Group (University of Vigo)
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>
# defining a class Email which can be used to parse emails.
read_emails <- function(email_file, PartSelectedOnMPAlternative){
if (!inherits(email_file, "character")) {
bdpar.log(message = paste0("email_files must be a character vector ",
"containing file paths to email txt files..."),
level = "FATAL",
className = NULL,
methodName = "read_emails")
}
emails <- data.frame(message = "",
date = "",
filename = "",
stringsAsFactors = FALSE)
email <- getElement(email_file, PartSelectedOnMPAlternative)
return(email)
}
getElement = function(filename, PartSelectedOnMPAlternative) {
path <- system.file(file.path("exec", "parse.py"), package = "bdpar")
command <- paste("python", shQuote(path), shQuote(filename), "date",
shQuote(PartSelectedOnMPAlternative), sep = " ")
try(suppressWarnings(response <- system(command,
intern = TRUE,
ignore.stderr = TRUE)), silent = TRUE)
if (!is.null(attr(response,"status"))) {
if (attr(response,"status") == 1) {
response <- ""
}
}
object <- c()
object["date"] <- response
command <- paste("python", shQuote(path), shQuote(filename), "message",
shQuote(PartSelectedOnMPAlternative), sep = " ")
try(suppressWarnings(response <- system(command,
intern = TRUE,
ignore.stderr = TRUE)), silent = TRUE)
if (!is.null(attr(response,"status"))) {
if (attr(response,"status") == 1) {
response <- ""
}
}
object["message"] <- paste(response,collapse = " ")
return(object)
}
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