working userloop

extract-twitter-accounts.R

@@ -8,11 +8,11 @@ setwd("~/Dokumente/Uni/Aktuell/BA-Arbeit/uni-ba-issuecomp")
 
 source("functions.R")
 
-# Set curl handle for friendly scraping
-handle <- getCurlHandle(httpheader = list(from         = "max.mehl@uni.kn",
-                                          'user-agent' = str_c(R.version$version.string)
-)
-)
+# # Set curl handle for friendly scraping
+# handle <- getCurlHandle(httpheader = list(from         = "max.mehl@uni.kn",
+#                                           'user-agent' = str_c(R.version$version.string)
+# )
+# )
 
 acc_url <- "http://www.bundestwitter.de/api/politiker"
 #acc_json <- readLines("politiker.txt")
@@ -35,14 +35,16 @@ api_params <- c(
 )
 
 api_url   <- "https://api.twitter.com/1.1/statuses/user_timeline.json";
-user <- "GregorGysi"
 max_count <- "200"
-max_id <- "999999999999999999"
-loop <- 1
 keep <- c("created_at", "id_str", "text", "retweet_count")
 rm(tweets_full)
-last_id <- NULL
-repeat {
+
+for(a in 1:nrow(acc_df)) {
+  user <- as.character(acc_df$screenname[a])
+  name <- as.character(acc_df$name[a])
+  max_id <- "999999999999999999"
+  loop <- 1
+  repeat {
     # Define specific search query
     query <- c(include_rts=1, exclude_replies="true", trim_user="true", include_entities="false", 
                screen_name=user, 
@@ -54,6 +56,7 @@ repeat {
       current <- twitter_api_call(api_url, query, api_params)
       tweets_temp <- fromJSON(correctJSON(current))
       tweets_temp <- tweets_temp[keep]
+      tweets_temp <- cbind(user=user, name=name, tweets_temp)
       tweets_full <- insertRow(tweets_full, tweets_temp)
       rm(tweets_temp)
     }
@@ -62,11 +65,12 @@ repeat {
       current <- twitter_api_call(api_url, query, api_params)
       tweets_full <- fromJSON(correctJSON(current))
       tweets_full <- tweets_full[keep]
+      tweets_full <- cbind(user=user, name=name, tweets_full)
     }
     
     # Now sleep 3 second to dodge 300queries/15min limit
-  cat("User:",user,"in loop:",loop,"- now waiting 3 secs...\n")
-  Sys.sleep(3)
+    cat("User:",user,"in loop:",loop,"- now waiting 2 secs...\n")
+    Sys.sleep(2)
     
     # Is the last tweet in tweets_full from 2013?
     status <- str_detect(tweets_full$created_at[nrow(tweets_full)], "2013$")
@@ -97,8 +101,13 @@ repeat {
       max_id <- tweets_full$id_str[nrow(tweets_full)]
       loop <- loop + 1  # just for stats
     }
+  }
+  
+  # Every tweet from 2014 from user[r] is downloaded. Now next user in for-loop
+  cat("User:",user,"finished after",loop,"loops\n")
 }
 
+
 # ---------------
 
 

functions.R

@@ -10,15 +10,6 @@ correctJSON <- function(string) {
   return(string)
 }
 
-correctJSON2 <- function(string) {
-  #string <- sub(x=string, pattern = perl('\\\\(?![tn"])'), replacement = " ")
-  string <- gsub(x=string, pattern = "\n", replacement = " ")
-  string <- gsub(x=string, pattern = "\r", replacement = " ")
-  string <- gsub(x=string, pattern = "\\^", replacement = " ")
-  #\xed\xa0\xbd\xed\xb1\x8d\xed\xa0\xbd\xed\xb8\x8e\
-  return(string)
-}
-
 insertRow <- function(existingDF, newrow, r) {
   r <- as.numeric(nrow(existingDF)) + 1
   existingDF <- rbind(existingDF,newrow)