html - 从表格聊天对话数据生成 html

Question

我有这张聊天对话表mydf

mydf = structure(list(User = c("Ana", "Ana", "Brian", "Ana", "Brian"), Message = c("Hi", 
"How are you?", "Good. You?", "Ok", "What's up?"), Time = structure(c(1512156236.17704, 
1512156238.67704, 1512156241.17704, 1512156243.67704, 1512156246.17704
), class = c("POSIXct", "POSIXt"))), .Names = c("User", "Message", 
"Time"), row.names = c(NA, -5L), class = "data.frame")

#> mydf
#   User      Message                Time
#1   Ana           Hi 2017-12-01 13:23:56
#2   Ana How are you? 2017-12-01 13:23:58
#3 Brian   Good. You? 2017-12-01 13:24:01
#4   Ana           Ok 2017-12-01 13:24:03
#5 Brian   What's up? 2017-12-01 13:24:06

我的目标是将这些数据转换为 HTML 中的对话格式。我目前正在通过向数据添加标签并保存它来做到这一点。然后我必须更多地使用 CSS 来让它变得更好。在 R 中有更简单的方法吗？

#REMOVE REPEATING NAMES
mydf$User = with(rle(mydf$User), unlist(sapply(seq_along(values),
                  function(i) c(rep(values[i], 1), rep("", lengths[i] - 1)))))

#ADD TAGS
mydf$User = ifelse(mydf$User == "", "", paste0("<h2 class=\"user\">", mydf$User, "</h2>"))
mydf$Message = paste0("<h3 class=\"msg\">", mydf$Message, "</h3>")
mydf$Time = paste0("<span class=\"tm\">", mydf$Time, "</span>")

#SAVE HTML    
writeLines(paste(paste(mydf$User, mydf$Message, mydf$Time), collapse = "\n"),"~/test.html")

Answer 1

我不确定这是否让您满意，但我会采用扩展 data.frame 并将其直接写入文件的方法

#REMOVE REPEATING NAMES
mydf$User = with(rle(mydf$User), unlist(sapply(seq_along(values),
              function(i) c(rep(values[i], 1), rep("", lengths[i] - 1)))))

#SAVE HTML    
write.table(
    data.frame(
        ifelse(mydf$User!="", "<h2 class=\"user\">",""), mydf$User, ifelse(mydf$User!="","</h2>",""),
        "<h3 class=\"msg\">", mydf$Message, "</h3>",
        "<span class=\"tm\">", mydf$Time, "</span>"),
    file = "~/test.html", quote = F, col.names = F, row.names = F )