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#' Retrieves daily master index
#'
#' \code{getDailyMaster} retrieves daily master index from the U.S. SEC EDGAR server.
#'
#' getDailyMaster function takes date as an input parameter from a user,
#' and downloads master index for the date from the U.S. SEC EDGAR server
#' \url{https://www.sec.gov/Archives/edgar/daily-index/}. It strips headers
#' and converts this daily filing information into dataframe format.
#' Function creates new directory 'edgar_DailyMaster' into working directory
#' to save these downloaded daily master index files in Rda format.
#' User must follow the US SEC's fair access policy, i.e. download only what you
#' need and limit your request rates, see \url{https://www.sec.gov/os/accessing-edgar-data}.
#'
#' @usage getDailyMaster(input.date)
#'
#' @param input.date in character format 'mm/dd/YYYY'.
#'
#' @return Function returns filings information in a dataframe format.
#'
#' @examples
#' \dontrun{
#'
#' output <- getDailyMaster('08/09/2016')
#'}
getDailyMaster <- function(input.date) {
dir.create("edgar_DailyMaster")
input.date <- as.Date(input.date, "%m/%d/%Y")
if (is.na(input.date)) {
msg <- "Select the appropriate date."
cat(msg)
return()
}
if (Sys.Date() < input.date) {
msg <- "Select the appropriate date."
cat(msg)
return()
}
year <- format(input.date, "%Y")
month <- format(input.date, "%m")
day <- format(input.date, "%d")
options(warn = -1) # remove warnings
# Check the download compatibility based on OS
getdownCompat <- function() {
if (nzchar(Sys.which("libcurl"))) {
dmethod <- "libcurl"
} else if (nzchar(Sys.which("wget"))) {
dmethod <- "wget"
} else if (nzchar(Sys.which("curl"))) {
dmethod <- "curl"
} else if (nzchar(Sys.which("lynx"))) {
dmethod <- "lynx"
} else if (nzchar(Sys.which("wininet"))) {
dmethod <- "wininet"
} else {
dmethod <- "auto"
}
return(dmethod)
}
# function to download file and return FALSE if download error
DownloadSECFile <- function(link, dfile, dmethod) {
UA <- "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:93.0) Gecko/20100101 Firefox/93.0"
tryCatch({
# utils::download.file(link, dfile, method = dmethod, quiet = TRUE,
# headers = c("User-Agent" = useragent,
# "Accept-Encoding"= "deflate, gzip",
# "Host"= "www.sec.gov"))
r <- httr::GET(link,
httr::add_headers(`Connection` = "keep-alive", `User-Agent` = UA),
httr::write_disk(dfile, overwrite=TRUE)
)
if(httr::status_code(r)==200){
return(TRUE)
}else{
return(FALSE)
}
return(TRUE)
}, error = function(e) {
return(FALSE)
})
}
DownloadSECFile2 <- function(link, dfile, dmethod) {
res <- DownloadSECFile(link, dfile, dmethod)
if(res){
return(res)
}else{
return(FALSE)
}
}
# function for downloading daily Index
GetDailyInfo <- function(day, month, year) {
dmethod <- getdownCompat() ## Check the download compatibility based on OS
date <- paste0(year, month, day)
filename <- paste0("edgar_DailyMaster/daily_idx_", date)
link1 <- paste0("https://www.sec.gov/Archives/edgar/daily-index/", year, "/QTR", ceiling(as.integer(month)/3),
"/master.", date, ".idx")
link2 <- paste0("https://www.sec.gov/Archives/edgar/daily-index/", year, "/QTR", ceiling(as.integer(month)/3),
"/master.", date, ".idx")
link3 <- paste0("https://www.sec.gov/Archives/edgar/daily-index/", year, "/QTR", ceiling(as.integer(month)/3),
"/master.", substr(as.character(year), 3, 4), month, day, ".idx")
link4 <- paste0("https://www.sec.gov/Archives/edgar/daily-index/", year, "/QTR", ceiling(as.integer(month)/3),
"/master.", date, ".idx")
down.success = FALSE
if (year < 1999) {
down.success <- DownloadSECFile2(link3, filename, dmethod)
}
if (year > 1998 && year < 2012) {
down.success <- DownloadSECFile2(link4, filename, dmethod)
}
if (year > 2011) {
fun.return1 <- DownloadSECFile2(link1, filename, dmethod)
if (fun.return1 && file.size(filename) > 500) {
down.success = TRUE
} else {
fun.return2 <- DownloadSECFile2(link2, filename, dmethod)
if (fun.return2) {
down.success = TRUE
}
}
}
if (down.success) {
# Removing ''' so that scan with '|' not fail due to occurrence of ''' in company name
temp.data <- gsub("'", "", readLines(filename))
temp.data <- iconv(temp.data, "latin1", "ASCII", sub = "")
# writting back to storage
writeLines(temp.data, filename)
# Find line number where header description ends
header.end <- grep("--------------------------------------------------------", temp.data)
scrapped.data <- scan(filename, what = list("", "", "", "", ""), flush = F, skip = header.end, sep = "|",
quiet = T)
final.data <- data.frame(cik = scrapped.data[[1]], company.name = scrapped.data[[2]], form.type = scrapped.data[[3]],
date.filed = scrapped.data[[4]], edgar.link = scrapped.data[[5]])
final.data$edgar.link <- NULL
## Save daily master index in Rda format
file.remove(filename)
save(final.data, file = paste0(filename, ".Rda"))
return(final.data)
}else{
cat(" Daily master index is not availbale for this date.")
return()
}
}
## Call above GetDailyInfo function
return(GetDailyInfo(day, month, year))
}
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