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Consider a simplified CSV format where all rows are separated by a newline and all columns are separated by commas. No commas are allowed as field data, but the data may contain other characters and character sequences that would normally be escaped when converted to HTML

The task is to create a function that takes a string representation of the CSV data and returns a text string of an HTML table representing the CSV data. Use the following data as the CSV text to convert, and show your output.

Character,Speech

The multitude,The messiah! Show us the messiah!

Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>

The multitude,Who are you?

Brians mother,I'm his mother; that's who!

The multitude,Behold his mother! Behold his mother!

For extra credit, optionally allow special formatting for the first row of the table as if it is the tables header row.

Ada

Works with: Ada 2005

Library: AWS

csv2html.adb: <lang Ada>with Ada.Strings.Fixed; with Ada.Text_IO; with Templates_Parser;

procedure Csv2Html is

  use type Templates_Parser.Vector_Tag;

  Chars : Templates_Parser.Vector_Tag;
  Speeches : Templates_Parser.Vector_Tag;

  CSV_File : Ada.Text_IO.File_Type;

begin

  -- read the csv data
  Ada.Text_IO.Open (File => CSV_File,
                    Mode => Ada.Text_IO.In_File,
                    Name => "data.csv");

  -- fill the tags
  while not Ada.Text_IO.End_Of_File (CSV_File) loop
     declare
        Whole_Line : String := Ada.Text_IO.Get_Line (CSV_File);
        Comma_Pos : Natural := Ada.Strings.Fixed.Index (Whole_Line, ",");
     begin
        Chars := Chars & Whole_Line (Whole_Line'First .. Comma_Pos - 1);
        Speeches := Speeches & Whole_Line (Comma_Pos + 1 .. Whole_Line'Last);
     end;
  end loop;

  Ada.Text_IO.Close (CSV_File);

  -- build translation table and output html
  declare
     Translations : constant Templates_Parser.Translate_Table :=
       (1 => Templates_Parser.Assoc ("CHAR", Chars),
        2 => Templates_Parser.Assoc ("SPEECH", Speeches));
  begin
     Ada.Text_IO.Put_Line
       (Templates_Parser.Parse ("table.tmplt", Translations));
  end;

end Csv2Html;</lang>

table.tmplt:

@@TABLE@@ @@END_TABLE@@

@_WEB_ESCAPE:CHAR_@

@_WEB_ESCAPE:SPEECH_@

</lang>

Output:

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

ALGOL 68

Works with: ALGOL 68 version Revision 1 - no extensions to language used.

Works with: ALGOL 68G version Any - tested with release 1.18.0-9h.tiny.

<lang algol68>#!/usr/local/bin/a68g --script #

[6]STRING rows := []STRING(

   "Character,Speech",
   "The multitude,The messiah! Show us the messiah!",
   "Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>",
   "The multitude,Who are you?",
   "Brians mother,I'm his mother; that's who!",
   "The multitude,Behold his mother! Behold his mother!"

);

[max abs char]STRING encoded; FOR i TO UPB encoded DO encoded[i]:=REPR i OD;

encoded[ABS""""] := """; optional #

 encoded[ABS "&"] := "&";
 encoded[ABS "<"] := "<";

encoded[ABS ">"] := ">"; optional #

OP ENCODE = (STRING s)STRING: (

 STRING out := "";
 FOR i TO UPB s DO out+:= encoded[ABS s[i]] OD;
 out

);

PROC head = (STRING title)VOID: (

 printf((
   $"<HEAD>"l$,
     $"<TITLE>"g"</TITLE>"l$, title,
     $"<STYLE type=""text/css"">"l$,
       $"TD {background-color:#ddddff; }"l$,
       $"thead TD {background-color:#ddffdd; text-align:center; }"l$,
     $"</STYLE>"l$,
   $"</HEAD>"l$
 ))

);

define HTML tags using Algol68's "reverent" block structuring #

PROC html = VOID: print(("<HTML>", new line)),

      body = VOID: print(("<BODY>", new line)),

table = VOID: print(("

", new line)), table row = VOID: print(("")), th = (STRING s)VOID: printf(($""$, s)), td = (STRING s)VOID: printf(($""$, s)), elbat row = VOID: print(("", new line)), elbat = VOID: print(("

"g"	"g"

", new line)),

      ydob = VOID: print(("</BODY>", new line)),
    lmth = VOID: print(("</HTML>", new line));

FILE row input; STRING row; CHAR ifs = ","; associate(row input, row); make term(row input, ifs);

html;

 head("CSV to HTML translation - Extra Credit");
 body;
   table;
     FOR nr TO UPB rows DO
       row := rows[nr];
       table row;
         on logical file end(row input, (REF FILE row input)BOOL: row end);
         FOR nf DO
           STRING field; get(row input,field);
           (nr=1|th|td)(ENCODE field);
           get(row input, space)
         OD;
         row end: reset(row input);
       elbat row
     OD;
   elbat;
 ydob;

lmth</lang> Output:<lang html5><HTML> <HEAD> <TITLE>CSV to HTML translation - Extra Credit</TITLE> <STYLE type="text/css"> TD {background-color:#ddddff; } thead TD {background-color:#ddffdd; text-align:center; } </STYLE> </HEAD> <BODY>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</BODY> </HTML></lang>

AutoHotkey

Very basic implementation <lang AutoHotkey>CSVData = ( Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother! )

TableData := "

" Loop Parse, CSVData,`n { TableData .= "`n " Loop Parse, A_LoopField, CSV TableData .= "" TableData .= "" } TableData .= "`n

" HTMLEncode(A_LoopField) "

"

HTMLEncode(str){

  static rep := "&<lt;>gt;""quot"
  Loop Parse, rep,;
     StringReplace, str, str, % SubStr(A_LoopField, 1, 1), % "&" . SubStr(A_LoopField, 2) . ";", All
  return str

} MsgBox % clipboard := TableData</lang> Output:

<table>
  <tr><td>Character</td><td>Speech</td></tr>
  <tr><td>The multitude</td><td>The messiah! Show us the messiah!</td></tr>
  <tr><td>Brians mother</td><td>&lt;angry&gt;Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!&lt;/angry&gt;</td></tr>
  <tr><td>The multitude</td><td>Who are you?</td></tr>
  <tr><td>Brians mother</td><td>I'm his mother; that's who!</td></tr>
  <tr><td>The multitude</td><td>Behold his mother! Behold his mother!</td></tr>
</table>

(note the output has been modified slightly since this webpage is html.)

C

<lang c>#include <stdio.h>

char input[] = "Character,Speech\n" "The multitude,The messiah! Show us the messiah!\n" "Brians mother,<angry>Now you listen here! He's not the messiah; " "he's a very naughty boy! Now go away!</angry>\n" "The multitude,Who are you?\n" "Brians mother,I'm his mother; that's who!\n" "The multitude,Behold his mother! Behold his mother!";

int main() { char *s = input;

printf("

\n\n\n

"); for (s = input; s; s++) { switch(s) { case '\n': printf("
"); break; case ',': printf("	"); break; case '<': printf("<"); break; case '>': printf(">"); break; case '&': printf("&"); break; default: putchar(*s); } } puts("

");

return 0; }</lang>

Output:

$ gcc -Wall -W -ansi -pedantic csv.c -o csv
$ ./csv

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

C++

<lang cpp>#include <string>

include <boost/regex.hpp>
include <iostream>

std::string csvToHTML( const std::string & ) ;

int main( ) {

  std::string text = "Character,Speech\n" 
                           "The multitude,The messiah! Show us the messiah!\n"

"Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>\n" "The multitude,Who are you?\n" "Brians mother,I'm his mother; that's who!\n" "The multitude,Behold his mother! Behold his mother!\n" ;

 std::cout << csvToHTML( text ) ;
 return 0 ;

}

std::string csvToHTML( const std::string & csvtext ) {

  //the order of the regexes and the replacements is decisive!
  std::string regexes[ 5 ] = { "<" , ">" , "^(.+?)\\b" , "," , "\n" } ;

const char* replacements [ 5 ] = { "<" , ">" , " $1" , "", "\n" } ;

  boost::regex e1( regexes[ 0 ] ) ; 
  std::string tabletext = boost::regex_replace( csvtext , e1 ,
    replacements[ 0 ] , boost::match_default | boost::format_all ) ;
  for ( int i = 1 ; i < 5 ; i++ ) {
     e1.assign( regexes[ i ] ) ;
     tabletext = boost::regex_replace( tabletext , e1 , replacements[ i ] , boost::match_default | boost::format_all ) ;
  }

tabletext = std::string( "

\n" ) + tabletext ; tabletext.append( "

\n" ) ;

  return tabletext ;

}</lang> Output: <lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

C#

<lang C sharp> using System; using System.Collections.Generic; using System.Linq; using System.Net;

   class Program
   {
       private static string ConvertCsvToHtmlTable(string csvText)
       {
           //split the CSV, assume no commas or line breaks in text
           List<List<string>> splitString = new List<List<string>>();
           List<string> lineSplit = csvText.Split('\n').ToList();
           foreach (string line in lineSplit)
           {
               splitString.Add(line.Split(',').ToList());
           }

           //encode text safely, and create table

string tableResult = "

"; foreach(List<string> splitLine in splitString) { tableResult += ""; foreach(string splitText in splitLine) { tableResult += "";

tableResult += ""; } tableResult += "

" + WebUtility.HtmlEncode(splitText) + "

";

           return tableResult;
       }
   }

</lang>

Output when using the text suggested: <lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

CoffeeScript

Works with: node.js

<lang coffeescript>String::__defineGetter__ 'escaped', () -> this.replace(/&/g, '&') .replace(/</g, '<') .replace(/>/g, '>') .replace(/"/g, '"') // rosettacode doesn't like "

text = Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!

lines = (line.split ',' for line in text.split /[\n\r]+/g)

header = lines.shift()

console.log """

<thead>

</thead> <tbody> """

for line in lines [character, speech] = line console.log """

"""

console.log """ </tbody>

#{header[0]}	#{header[1]}	#{character}	#{speech.escaped}

"""</lang>

Output:

<thead>

 </thead>
 <tbody>

 </tbody>

Character	Speech	The multitude	The messiah! Show us the messiah!	Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>	The multitude	Who are you?	Brians mother	I'm his mother; that's who!	The multitude	Behold his mother! Behold his mother!

</lang>

Delphi

This solution solves both the basic and extra credit tasks.

program csv2html;

{$APPTYPE CONSOLE}

uses

 SysUtils,
 Classes;

const

 // Carriage Return/Line Feed
 CRLF    = #13#10;

 // The CSV data
 csvData =
 'Character,Speech'+CRLF+
 'The multitude,The messiah! Show us the messiah!'+CRLF+
 'Brians mother,<angry>Now you listen here! Hes not the messiah; hes a very naughty boy! Now go away!</angry>'+CRLF+
 'The multitude,Who are you?'+CRLF+
 'Brians mother,Im his mother; thats who!'+CRLF+
 'The multitude,Behold his mother! Behold his mother!';

 // HTML header
 htmlHead =
 '<!DOCTYPE html'+CRLF+
 'PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"'+CRLF+
 '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'+CRLF+
 '<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">'+CRLF+
 '<head>'+CRLF+
 '<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />'+CRLF+
 '<title>CSV-to-HTML Conversion</title>'+CRLF+
 '<style type="text/css">'+CRLF+
 'body {font-family:verdana,helvetica,sans-serif;font-size:100%}'+CRLF+
 'table {width:70%;border:0;font-size:80%;margin:auto}'+CRLF+
 'th,td {padding:4px}'+CRLF+
 'th {text-align:left;background-color:#eee}'+CRLF+
 'th.c {width:15%}'+CRLF+
 'td.c {width:15%}'+CRLF+
 '</style>'+CRLF+
 '</head>'+CRLF+
 '<body>'+CRLF;

 // HTML footer
 htmlFoot =
 '</body>'+CRLF+
 '</html>';

{ Function to split a string into a list using a given delimiter } procedure SplitString(S, Delim: string; Rslt: TStrings); var

 i: integer;
 fld: string;

begin

 fld := ;

 for i := Length(S) downto 1 do
   begin
     if S[i] = Delim then
       begin
         Rslt.Insert(0,fld);
         fld := ;
       end
       else
        fld := S[i]+fld;
   end;

 if (fld <> ) then
     Rslt.Insert(0,fld);

end;

{ Simple CSV parser with option to specify that the first row is a header row } procedure ParseCSV(const csvIn: string; htmlOut: TStrings; FirstRowIsHeader: Boolean = True); const

rowstart = ''; rowend = ''; cellendstart = ''; hcellendstart = ''; hrowstart = ''; hrowend = ''; var tmp,pieces: TStrings; i: Integer; begin // HTML header htmlOut.Text := htmlHead + CRLF + CRLF; // Start the HTML table htmlOut.Text := htmlOut.Text + '

' + CRLF; // Create stringlist tmp := TStringList.Create; try // Assign CSV data to stringlist and fix occurences of '<' and '>' tmp.Text := StringReplace(csvIn,'<','<',[rfReplaceAll]); tmp.Text := StringReplace(tmp.Text,'>','>',[rfReplaceAll]); // Create stringlist to hold the parts of the split data pieces := TStringList.Create; try // Loop through the CSV rows for i := 0 to Pred(tmp.Count) do begin // Split the current row SplitString(tmp[i],',',pieces); // Check if first row and FirstRowIsHeader flag set if (i = 0) and FirstRowIsHeader then // Render HTML htmlOut.Text := htmlOut.Text + hrowstart + pieces[0] + hcellendstart + pieces[1] + hrowend + CRLF else htmlOut.Text := htmlOut.Text + rowstart + pieces[0] + cellendstart + pieces[1] + rowend + CRLF; end; // Finish the HTML table and end the HTML page htmlOut.Text := htmlOut.Text + '

' + CRLF + htmlFoot;

   finally
     pieces.Free;
   end;

 finally
   tmp.Free;
 end;

end;

var

 HTML: TStrings;

begin

 // Create stringlist to hold HTML output
 HTML := TStringList.Create;
 try
   Writeln('Basic:');
   Writeln();

   // Load and parse the CSV data
   ParseCSV(csvData,HTML,False);

   // Output the HTML to the console
   Writeln(HTML.Text);

   // Save the HTML to a file (in application's folder)
   HTML.SaveToFile('csv2html_basic.html');

   Writeln();
   Writeln('=====================================');
   Writeln();

   HTML.Clear;

   Writeln('Extra Credit:');
   Writeln();

   // Load and parse the CSV data
   ParseCSV(csvData,HTML,True);

   // Output the HTML to the console
   Writeln(HTML.Text);

   // Save the HTML to a file (in application's folder)
   HTML.SaveToFile('csv2html_extra.html');
   Writeln();
   Writeln('=====================================');

 finally
   HTML.Free;
 end;

 // Keep console window open
 Readln;

end.

</lang>

Basic output: <lang html5> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" /> <title>CSV-to-HTML Conversion</title> <style type="text/css"> body {font-family:verdana,helvetica,sans-serif;font-size:100%} table {width:70%;border:0;font-size:80%;margin:auto} th,td {padding:4px} th {text-align:left;background-color:#eee} th.c {width:15%} td.c {width:15%} </style> </head> <body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body> </html> </lang>

Extra credit output: <lang html5> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" /> <title>CSV-to-HTML Conversion</title> <style type="text/css"> body {font-family:verdana,helvetica,sans-serif;font-size:100%} table {width:70%;border:0;font-size:80%;margin:auto} th,td {padding:4px} th {text-align:left;background-color:#eee} th.c {width:15%} td.c {width:15%} </style> </head> <body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body> </html> </lang>

Go

Minimalist version satisfies basic task requirements: <lang go>package main

import (

   "bytes"
   "fmt"
   "strings"
   "template"

)

func main() {

   fmt.Print(csvToHtml(`Character,Speech

The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!`)) }

func csvToHtml(csv string) string {

   lines := strings.Split(csv, "\n")
   data := make([][]string, len(lines))
   for i, l := range lines {
       data[i] = strings.Split(l, ",")
   }
   var b bytes.Buffer

template.Must(new(template.Template).Parse(`

Template:Range .Template:Range .Template:End Template:End

Template:Html .

`)).Execute(&b, data)

   return b.String()

}</lang> Extra credit version interprets "optionally" with a command line option. When running the compiled program, a command line option of -h does the special formatting for the heading line. Also different in this version is some error checking, a few things pulled apart and given names for the purpose of readability, and use of a template set to show how templates can be composed of common pieces. <lang go>package main

import (

   "bytes"
   "flag"
   "fmt"
   "os"
   "strings"
   "template"

)

const csv = `Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!`

func main() {

   headings := flag.Bool("h", false, "format first row as column headings")
   flag.Parse()
   if html, err := csvToHtml(csv, *headings); err == nil {
       fmt.Println(html)
   } else {
       fmt.Println(err)
   }

}

type line struct {

   Character, Speech string

}

type script struct {

   Headings line
   Body     []line

}

func csvToHtml(csv string, specialHeadings bool) (string, os.Error) {

   lines := strings.Split(csv, "\n")
   if len(lines) == 0 {
       return "", os.NewError("no data")
   }
   var s script
   if specialHeadings {
       hl := strings.Split(lines[0], ",")
       if len(hl) != 2 {
           return "", fmt.Errorf(
               "%d column headings found.  2 required", len(hl))
       }
       s.Headings = line{hl[0], hl[1]}
       lines = lines[1:]
   }
   s.Body = make([]line, len(lines))
   for i, l := range lines {
       bl := strings.Split(l, ",")
       if len(bl) != 2 {
           return "", fmt.Errorf(
               "%d csv items found in line %d of script.  2 required",
               len(bl), i+1)
       }
       s.Body[i] = line{bl[0], bl[1]}
   }
   set := template.SetMust(new(template.Set).Parse(tables))
   tmpl := "tableNoHeadings"
   if specialHeadings {
       tmpl = "tableWithHeadings"
   }
   var b bytes.Buffer
   err := set.Execute(&b, tmpl, s)
   return b.String(), err

}

var tables = `

Template:Define "body"Template:Range . Template:Html .Character Template:Html .Speech

Template:End Template:End

Template:Define "tableNoHeadings"

Template:Template "body" .Body

Template:End

Template:Define "tableWithHeadings"

Template:Template "body" .Body

Template:Html .Headings.Character	Template:Html .Headings.Speech

Template:End`</lang> Output of the extra credit version, with and without the -h option: <lang html5> > csv2html -h

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

> csv2html

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Groovy

Solution #1: Nested GStrings

Brute force solution using nested GStrings. It solves both the basic and extra credit tasks. <lang groovy>def formatCell = { cell ->

"${cell.replaceAll('&','&').replaceAll('<','<')}"

}

def formatRow = { row ->

"""${row.split(',').collect { cell -> formatCell(cell) }.join()} """ } def formatTable = { csv, header=false -> def rows = csv.split('\n').collect { row -> formatRow(row) } header \ ? """

<thead> ${rows[0]}</thead> <tbody> ${rows[1..-1].join()}</tbody>

""" \

       : """

${rows.join()}

""" }

def formatPage = { title, csv, header=false -> """<html> <head> <title>${title}</title> <style type="text/css"> td {background-color:#ddddff; } thead td {background-color:#ddffdd; text-align:center; } </style> </head> <body>${formatTable(csv, header)}</body> </html>""" }</lang>

Test: <lang groovy>def csv = Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!

println 'Basic:' println '-----------------------------------------' println (formatPage('Basic', csv)) println '-----------------------------------------' println() println() println 'Extra Credit:' println '-----------------------------------------' println (formatPage('Extra Credit', csv, true)) println '-----------------------------------------'</lang>

Basic output:

<head> <title>Basic</title> <style type="text/css"> td {background-color:#ddddff; } thead td {background-color:#ddffdd; text-align:center; } </style> </head> <body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body>

</html></lang>

Appearance as rendered in Google Chrome.

Extra Credit output:

<head> <title>Extra Credit</title> <style type="text/css"> td {background-color:#ddddff; } thead td {background-color:#ddffdd; text-align:center; } </style> </head> <body>

<thead>

</thead> <tbody>

</tbody>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body>

</html></lang>

Appearance as rendered in Google Chrome.

Solution #2: MarkupBuilder

A much cleaner solution using the Groovy XML MarkupBuilder class. It solves both the basic and extra credit tasks. <lang groovy>import groovy.xml.MarkupBuilder

def formatRow = { doc, row ->

   doc.tr { row.each { cell -> td { mkp.yield(cell) } } }

}

def formatPage = { titleString, csv, header=false ->

   def writer = new StringWriter()
   def doc = new MarkupBuilder(writer)
   def rows = csv.split('\n').collect { row -> row.split(',') }
   doc.html {
       head {
           title (titleString)
           style (type:"text/css") { 
               mkp.yield(
                   td {background-color:#ddddff; }
                   thead td {background-color:#ddffdd; text-align:center; }
               )
           }
       }
       body {
           table {
               header && thead { formatRow(doc, rows[0]) }
               header && tbody { rows[1..-1].each { formatRow(doc, it) } }
               header || rows.each { formatRow(doc, it) }
           }
       }
   }
   writer.toString()

}</lang>

Test:
The interface is the same for both solutions, so we just reuse the same test as before.

Basic output:

 <head>
   <title>Basic</title>
   <style type='text/css'>
                   td {background-color:#ddddff; }
                   thead td {background-color:#ddffdd; text-align:center; }
               </style>
 </head>
 <body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

 </body>

</html></lang>

The HTML for this solution looks superficially different than that from the GString solution, but the appearance as rendered in Google Chrome is identical.

Extra Credit output:

 <head>
   <title>Extra Credit</title>
   <style type='text/css'>
                   td {background-color:#ddddff; }
                   thead td {background-color:#ddffdd; text-align:center; }
               </style>
 </head>
 <body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

 </body>

</html></lang>

The HTML for this solution looks superficially different than that from the GString solution, but the appearance as rendered in Google Chrome is identical.

Haskell

Simple solution <lang haskell>--import Data.List.Split (splitOn) -- if the import is available splitOn :: Char -> String -> [String] -- otherwise splitOn delim = foldr (\x rest ->

                       if x == delim then "" : rest
                       else (x:head rest):tail rest) [""]

htmlEscape :: String -> String htmlEscape = concatMap escapeChar

             where escapeChar '<' = "<"
                   escapeChar '>' = ">"
                   escapeChar '&' = "&"
                   escapeChar '"' = """ --"
                   escapeChar c   = [c]

toHtmlRow :: [String] -> String

toHtmlRow [] = "" toHtmlRow cols = let htmlColumns = concatMap toHtmlCol cols in "\n" ++ htmlColumns ++ "" where toHtmlCol x = " " ++ htmlEscape x ++ "\n"

csvToTable :: String -> String csvToTable csv = let rows = map (splitOn ',') $ lines csv

                    html = unlines $ map toHtmlRow rows

in "

\n" ++ html ++ "

"

main = interact csvToTable</lang>

Compact version <lang haskell>import Data.List (unfoldr) split p = unfoldr (\s -> case dropWhile p s of [] -> Nothing

                                              ss -> Just $ break p ss)

main = interact (\csv -> "

\n" ++ (unlines $ map ((\cols -> "\n" ++ (concatMap (\x -> " \n") cols) ++ "") . split (==',')) $ lines csv) ++ "

" ++ concatMap (\c ->

           case c of {'<' -> "<"; '>' -> ">";

'&' -> "&"; '"' -> """; _ -> [c]}) x

++ "

")</lang>

Output

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Icon and Unicon

This solution for the extra credit works in both Icon and Unicon. The simple CSV is read from standard input and written to standard output. The presence/abscend of "-heading" in the argument list sets the variable thead to the procedure writes or a 1 (for more on this see Introduction to Icon/Unicon - Conjunction yielding different results).

<lang Icon>procedure main(arglist)

   pchar := &letters ++ &digits ++ '!?;. '  # printable chars

write("

") firstHead := (!arglist == "-heading") tHead := write while row := trim(read()) do { if \firstHead then write(" <THEAD>") else tHead(" <TBODY>") writes(" ") if (\firstHead) := &null then write(" </THEAD>\n <TBODY>") tHead := 1 } write(" </TBODY>") write("

")

      while *row > 0 do

row ?:= ( (=",",writes("

")) |

                        writes( tab(many(pchar)) |
                        ("&#" || ord(move(1))) ),   tab(0))

write("

")

end</lang>

Output:

<THEAD>

   </THEAD>
   <TBODY>

  </TBODY>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	&#60angry&#62Now you listen here! He&#39s not the messiah; he&#39s a very naughty boy! Now go away!&#60&#47angry&#62
The multitude	Who are you?
Brians mother	I&#39m his mother; that&#39s who!
The multitude	Behold his mother! Behold his mother!

</lang>

J

Solution (extra credit) <lang j>require 'strings tables/csv' encodeHTML=: ('&';'&';'<';'<';'>';'>')&stringreplace

tag=: adverb define

 'starttag endtag'=.m
 (,&.>/)"1 (starttag , ,&endtag) L:0 y

)

markupCells=: ('';'') tag markupHdrCells=: ('';'') tag markupRows=: ('';'',LF) tag markupTable=: (('

',LF);'

') tag

makeHTMLtablefromCSV=: verb define

 0 makeHTMLtablefromCSV y             NB. default left arg is 0 (no header row)

 t=. fixcsv encodeHTML y
 if. x do. t=. (markupHdrCells@{. , markupCells@}.) t
     else. t=. markupCells t
 end.
 ;markupTable markupRows t

)</lang>

For those interested, equivalent tacit versions of tag and makeHTMLtablefromCSV are: <lang j>tag=: adverb def '[: (,&.>/)"1 m&(0&{::@[ , 1&{::@[ ,~ ]) L:0@]' makeHTMLtablefromCSV6=: 0&$: : ([: ; markupTable@markupRows@([ markupCells`(markupHdrCells@{. , markupCells@}.)@.[ fixcsv@encodeHTML))</lang>

Example <lang j> CSVstrng=: noun define Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother! )

  1 makeHTMLtablefromCSV CSVstrng</lang>

HTML output:

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Java

This example does not show the output mentioned in the task description on this page (or a page linked to from here). Please ensure that it meets all task requirements and remove this message.
Note that phrases in task descriptions such as "print and display" and "print and show" for example, indicate that (reasonable length) output be a part of a language's solution.

Solution including simple and extra credit version

for simple solution : java -cp . Csv2Html < text.csv > simple.html

for extended solution: java -cp . Csv2Html header < text.csv > extended.html

<lang java>import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintStream;

class Csv2Html {

public static String escapeChars(String lineIn) { StringBuilder sb = new StringBuilder(); int lineLength = lineIn.length(); for (int i = 0; i < lineLength; i++) { char c = lineIn.charAt(i); switch (c) { case '"': sb.append("""); break; case '&': sb.append("&"); break; case '\: sb.append("'"); break; case '<': sb.append("<"); break; case '>': sb.append(">"); break; default: sb.append(c); } } return sb.toString(); }

public static void tableHeader(PrintStream ps, String[] columns) {

ps.print(""); for (int i = 0; i < columns.length; i++) { ps.print("");

ps.print(columns[i]);

ps.print(""); } ps.println(""); } public static void tableRow(PrintStream ps, String[] columns) { ps.print(""); for (int i = 0; i < columns.length; i++) { ps.print("");

ps.print(columns[i]);

ps.print(""); } ps.println(""); } public static void main(String[] args) throws Exception { boolean withTableHeader = (args.length != 0); InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr); PrintStream stdout = System.out; stdout.print("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" " + "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">" + "<html xmlns=\"http://www.w3.org/1999/xhtml\">" + "<head><meta http-equiv=\"Content-type\" content=\"text/html;charset=UTF-8\"/>" + "<title>Csv2Html</title><style type=\"text/css\">" + "body{background-color:#FFF;color:#000;font-family:OpenSans,sans-serif;font-size:10px;}" + "table{border:0.2em solid #2F6FAB;border-collapse:collapse;}" + "th{border:0.15em solid #2F6FAB;padding:0.5em;background-color:#E9E9E9;}" + "td{border:0.1em solid #2F6FAB;padding:0.5em;background-color:#F9F9F9;}</style>" + "</head><body>

Csv2Html

"); stdout.println("

"); String stdinLine; boolean firstLine = true; while ((stdinLine = br.readLine()) != null) { String[] columns = escapeChars(stdinLine).split(","); if (withTableHeader == true && firstLine == true) { tableHeader(stdout, columns); firstLine = false; } else { tableRow(stdout, columns); } } stdout.println("

</body></html>");

} } </lang>

JavaScript

<lang JavaScript>var csv = "Character,Speech\n" + "The multitude,The messiah! Show us the messiah!\n" + "Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>\n" + "The multitude,Who are you?\n" + "Brians mother,I'm his mother; that's who!\n" + "The multitude,Behold his mother! Behold his mother!";

csv = csv.replace(/&/g, '&')

        .replace(/</g, '<')
        .replace(/>/g, '>')
        .replace(/"/g, '"');

var lines = csv.split(/[\n\r]+/g),

   header = lines.shift().split(","),
   line,
   rows = "",

thead = ''+ ''+header[0]+''+ ''+header[1]+''+ '\n'; for (var i=0, len=lines.length; i<len; i++) { line = lines[i].split(","); rows += ''+ ''+line[0]+''+ ''+line[1]+''+ '\n'; } console.log('

<thead>\n' + thead + '</thead><tbody>\n' + rows + '</tbody>

' );</lang> <lang html5>

<thead>

</thead><tbody>

</tbody>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Lua

<lang lua>FS = "," -- field separator

csv = [[ Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother! ]]

csv = csv:gsub( "<", "<" ) csv = csv:gsub( ">", "&gr;" )

html = { "

" } for line in string.gmatch( csv, "(.-\n)" ) do str = "" for field in string.gmatch( line, "(.-)["..FS.."?\n?]" ) do str = str .. ""

end

str = str .. "" html[#html+1] = str; end html[#html+1] = "

" .. field .. "

"

for _, line in pairs(html) do

   print(line)

end</lang>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry&gr;Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry&gr;
The multitude	Who are you
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

MATLAB

This example is incomplete. No escaping of '<' in '<angry' and '</angry' Please ensure that it meets all task requirements and remove this message.

The easiest way to import csv data into MATLAB is to save it in a csv file, then import the data using the "uiimport -file" command. The result of which will be a cell array with each entry being a string delimited by the newline character.

Example: <lang MATLAB>>> data

data =

   'Character,Speech'
   'The multitude,The messiah! Show us the messiah!'
   [1x109 char]
   'The multitude,Who are you?'
   'Brians mother,I'm his mother; that's who!'
   'The multitude,Behold his mother! Behold his mother!'</lang>

The other way is to copy and paste the data, but you will have to manually add all of the newline characters and string quotations your self. This is messy and infeasible for large amounts of data, but it is still a valid input.

Example: <lang MATLAB>>> csvData = ['Character,Speech' sprintf('\n')... 'The multitude,The messiah! Show us the messiah!' sprintf('\n')... 'Brians mother,<angry>Now you listen here! Hes not the messiah; hes a very naughty boy! Now go away!</angry>' sprintf('\n')... 'The multitude,Who are you?' sprintf('\n')... 'Brians mother,Im his mother; thats who!' sprintf('\n')... 'The multitude,Behold his mother! Behold his mother!']

csvData =

Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!</lang>

So, to be able to accept both type of inputs, the function "csvToHTHML()" tests to see if the input is a string as in example 2. If the input is a string it converts the data to a cell array of strings formatted in the exact same way MATLAB formats the first example. The output of the function will be a properly formatted HTML table, which includes the "<THEAD>" around the first row of data so that special formatting can be applied to the column titles.

<lang MATLAB>function htmlOutput = csvToHTML(csvData)

   if ischar(csvData)
      newlineIndex = find( (csvData == char(10)) ); %find all newline characters
      text = cell( numel(newlineIndex),1 ); %preallocate space for processed data
      
      for i = (numel(newlineIndex):-1:1) %iterate backwards
          text{i} = csvData(newlineIndex(i)+1:end);
          csvData(newlineIndex(i):end) = []; %delete the newline and everything after it
      end
      
      csvData = text;
      clear text;
   end

htmlOutput = '

'; for i = (1:numel(csvData)) if i == 1 %If first entry, then include <thead> csvData{i} = [char(10) char(9) '<thead>' char(10) char(9) char(9) '' char(10) char(9) '</thead>' char(10)]; else %Otherwise, the data is a regular table row csvData{i} = [char(9) '' char(10) char(9) char(9) '' char(10) char(9) '' char(10)]; end %if %Convert each comma to its HTML equivalent for j = fliplr(find( (csvData{i} == ',') )) csvData{i} = [csvData{i}(1:j-1) '' char(10) char(9) char(9) '

'... csvData{i} '

' csvData{i}... '

' csvData{i}(j+1:end)];

       end %for
       
       %We could make this faster by preallocating htmlOutput but that is
       %more work than necessary to provide a basic solution
       htmlOutput = [htmlOutput csvData{i}];
       
   end %for

htmlOutput = [htmlOutput '

'];

end %csvToHTML</lang>

Ouput: <lang html5>>> csvToHTML(data)

ans =

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

ML/I

This example carries out the special formatting for extra credit. This is a macro rather than a function, though, due to the nature of ML/I.

Input

<lang ML/I>MCSKIP "WITH" NL "" CSV to HTML "" assumes macros on input stream 1, terminal on stream 2 MCSKIP MT,[] MCSKIP SL WITH ~ MCINS %. "" C1=th before header output, td afterwards MCCVAR 1,2 MCSET C1=[th] "" HTML escapes MCDEF < AS [[<]] MCDEF > AS [[>]] MCDEF & AS & "" Main line processing MCDEF SL N1 OPT , N1 OR NL ALL

AS [[ ] MCSET T2=1 %L1.MCGO L2 IF T2 GR T1 [<]%C1.[>]%AT2.[</]%C1.[>] MCSET T2=T2+1 MCGO L1 %L2.[ ] MCSET C1=[td] ] [<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html> <head> <title>HTML converted from CSV</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <style type="text/css"> </style> </head> <body>

] MCSET S1=1 ~MCSET S10=2 ~MCSET S1=0 [

</body> </html> ]</lang>

Output

<lang ML/I><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html> <head> <title>HTML converted from CSV</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <style type="text/css"> </style> </head>

<body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body> </html></lang>

OCaml

Simple solution

OCaml possesses a CSV module but we do not use it hereafter because the CSV data does not contain comas.

<lang ocaml>open Printf

let csv_data = "\ Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; \

             he's a very naughty boy! Now go away!</angry>

The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!"

(* General HTML escape *) let escape =

 let html_escapes = Str.regexp "\\([^A-Za-z0-9 ;!?'/]\\)" in
 let esc s = sprintf "&#%04d;" (Char.code s.[Str.group_beginning 1]) in
 Str.global_substitute html_escapes esc

let nl = Str.regexp "\n\r?" let coma = Str.regexp ","

let list_of_csv csv =

 List.map (fun l -> Str.split coma l) (Str.split nl csv)

let print_html_table segments =

printf "

\n"; List.iter (fun line -> printf ""; List.iter (fun c -> printf "" (escape c)) line; printf "\n"; ) segments; printf "

%s

\n";

let () =

 print_html_table (list_of_csv csv_data)</lang>

Sample html output:

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Extra credit solution

<lang ocaml>open Printf

let csv_data = "\ Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; \

             he's a very naughty boy! Now go away!</angry>

The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!"

(* General HTML escape *) let escape =

 let html_escapes = Str.regexp "\\([^A-Za-z0-9 ;!?'/]\\)" in
 let esc s = sprintf "&#%04d;" (Char.code s.[Str.group_beginning 1]) in
 Str.global_substitute html_escapes esc

let nl = Str.regexp "\n\r?" let coma = Str.regexp ","

let list_of_csv csv =

 List.map (fun l -> Str.split coma l) (Str.split nl csv)

let print_html_table segments =

 let print_row line =

printf ""; List.iter (fun c -> printf "%s" (escape c)) line; printf "\n" in printf "<html> <head> <style type=\"text/css\"> td {background-color:#ddddff; } thead td {background-color:#ddffdd; text-align:center; } </style> </head>"; printf "

\n<thead>"; print_row (List.hd segments); printf "</thead><tbody>\n"; List.iter print_row (List.tl segments); printf "</tbody>\n

\n</html>";

let () =

 print_html_table (list_of_csv csv_data)</lang>

Output: <lang html5><html>

 <head> 
   <style type="text/css"> 
     td {background-color:#ddddff; }
     thead td {background-color:#ddffdd; text-align:center; }
   </style>

</head>

<thead>

</thead><tbody>

</tbody>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</html></lang>

OpenEdge/Progress

<lang Progress (OpenEdge ABL)> FUNCTION csvToHtml RETURNS CHARACTER (

  i_lhas_header  AS LOGICAL,
  i_cinput       AS CHARACTER

):

  DEFINE VARIABLE coutput AS CHARACTER   NO-UNDO.

  DEFINE VARIABLE irow    AS INTEGER     NO-UNDO.
  DEFINE VARIABLE icolumn AS INTEGER     NO-UNDO.
  DEFINE VARIABLE crow    AS CHARACTER   NO-UNDO.
  DEFINE VARIABLE ccell   AS CHARACTER   NO-UNDO.

coutput = "<html>~n~t

". DO irow = 1 TO NUM-ENTRIES( i_cinput, "~n":U ): coutput = coutput + "~n~t~t". crow = ENTRY( irow, i_cinput, "~n":U ). DO icolumn = 1 TO NUM-ENTRIES( crow ): ccell = ENTRY( icolumn, crow ). coutput = coutput + "~n~t~t~t" + IF i_lhas_header AND irow = 1 THEN "". END. coutput = coutput + "~n~t~t". END. coutput = coutput + "~n~t

" ELSE "	". coutput = coutput + REPLACE( REPLACE( REPLACE( ccell, "&", "&" ), "<", "<" ), ">", ">" ). coutput = coutput + IF i_lhas_header AND irow = 1 THEN "" ELSE "

~n</html>".

  RETURN coutput.

END FUNCTION. /* csvToHtml */

MESSAGE

  csvToHtml( 
     TRUE,
     "Character,Speech" + "~n" +
     "The multitude,The messiah! Show us the messiah!" + "~n" +
     "Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>" + "~n" +
     "The multitude,Who are you?" + "~n" +
     "Brians mother,I'm his mother; that's who!" + "~n" +
     "The multitude,Behold his mother! Behold his mother!"
  )

VIEW-AS ALERT-BOX.</lang> Output with header enabled <lang html><html>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</html></lang>

Perl

Provide the CSV data as standard input. With a command-line argument, the first row will use instead of .

<lang perl>use HTML::Entities;

sub row {

   my $elem = shift;
   my @cells = map {"<$elem>$_</$elem>"} split ',', shift;

print '', @cells, "\n"; } my ($first, @rest) = map {my $x = $_; chomp $x; encode_entities $x} <STDIN>; print "

\n"; row @ARGV ? 'th' : 'td', $first; row 'td', $_ foreach @rest; print "

\n";</lang>

Output (with a command-line argument):

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

PicoLisp

Simple solution

<lang PicoLisp>(load "@lib/http.l")

(in "text.csv"

(

'myStyle NIL NIL (prinl) (while (split (line) ",") (<row> NIL (ht:Prin (pack (car @))) (ht:Prin (pack (cadr @)))) (prinl) ) ) )</lang> Output: <lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Extra credit solution

<lang PicoLisp>(load "@lib/http.l")

(in "text.csv"

  (when (split (line) ",")

(

'myStyle NIL (mapcar '((S) (list NIL (pack S))) @) (prinl) (while (split (line) ",") (<row> NIL (ht:Prin (pack (car @))) (ht:Prin (pack (cadr @)))) (prinl) ) ) ) )</lang> Output: <lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

PowerShell

Simple solution

<lang Powershell> Import-Csv -Path .\csv_html_test.csv | ConvertTo-Html -Fragment | Out-File .\csv_html_test.html </lang> Output:

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Extra credit solution

<lang Powershell> $htmlformat = '<title>Csv to Html</title>' $htmlformat += '<style type="text/css">' $htmlformat += 'BODY{background-color:#663300;color:#FFCC00;font-family:Arial Narrow,sans-serif;font-size:17px;}' $htmlformat += 'TABLE{border-width: 3px;border-style: solid;border-color: black;border-collapse: collapse;}' $htmlformat += 'TH{border-width: 1px;padding: 3px;border-style: solid;border-color: black;background-color:#663333}' $htmlformat += 'TD{border-width: 1px;padding: 8px;border-style: solid;border-color: black;background-color:#660033}' $htmlformat += '</style>'

Import-Csv -Path .\csv_html_test.csv | ConvertTo-Html -Head $htmlformat -Body '

Csv to Html

' | Out-File .\csv_html_test.html

Invoke-Expression .\csv_html_test.html </lang> Output: <lang html5> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Csv to Html</title><style type="text/css">BODY{background-color:#663300;color:#FFCC00;font-family:Arial Narrow,sans-serif;font-size:17px;}TABLE{border-width: 3px;border-style: solid;border-color: black;border-collapse: collapse;}TH{border-width: 1px;padding: 3px;border-style: solid;border-color: black;background-color:#663333}TD{border-width: 1px;padding: 8px;border-style: solid;border-color: black;background-color:#660033}</style> </head><body>

Csv to Html

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body></html> </lang>

Prolog

Uses DCG. Works with SWI-Prolog.

Simple solution

<lang Prolog>csv_html :- L = "Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!",

csv_html(L, Out, []), string_to_list(Str, Out), writeln(Str).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % simple HTML % csv_html(L) -->

"

\n", csv_tr(L), "

".

csv_tr([]) --> [].

csv_tr(L) -->

"\n", csv_td(L, S), "\n\n", csv_tr(S). csv_td(L, S) --> "",

csv_td_in(L, S),

"". csv_td_in([], []) --> []. csv_td_in([10|L], L) --> []. csv_td_in([44|L], S) --> "",

csv_td_in(L,S).

csv_td_in([60|T], S) --> "<", csv_td_in(T, S).

csv_td_in([62|T], S) --> ">", csv_td_in(T, S).

csv_td_in([H|T], S) --> [H], csv_td_in(T, S).

</lang> OutPut :

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!></angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Extra credit solution

<lang Prolog>csv_html_plus :- L = "Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!",

csv_html_plus(L, Out1, []), string_to_list(Str1, Out1), writeln(Str1).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % HTML + % csv_html_plus(L) -->

"

\n", csv_head(L, R), csv_body(R), "

".

csv_head(L, R) --> "<THEAD>\n", csv_head_tr(L, R), "</THEAD>\n".

csv_head_tr(L, R) -->

"\n", csv_head_th(L, R), "\n\n". csv_head_th(L, S) --> "",

csv_head_th_in(L, S),

"". csv_head_th_in([], []) --> []. csv_head_th_in([10|L], L) --> []. csv_head_th_in([44|L], S) --> "",

csv_head_th_in(L,S).

csv_head_th_in([H|T], S) --> [H], csv_head_th_in(T, S).

csv_body(L) --> "<TBODY>\n", csv_body_tr(L), "</TBODY>\n".

csv_body_tr([]) --> [].

csv_body_tr(L) -->

"\n", csv_body_td(L, S), "\n\n", csv_body_tr(S). csv_body_td(L, S) --> "",

csv_body_td_in(L, S),

"". csv_body_td_in([], []) --> []. csv_body_td_in([10|L], L) --> []. csv_body_td_in([44|L], S) --> "",

csv_body_td_in(L,S).

csv_body_td_in([60|T], S) --> "<", csv_body_td_in(T, S).

csv_body_td_in([62|T], S) --> ">", csv_body_td_in(T, S).

csv_body_td_in([H|T], S) --> [H], csv_body_td_in(T, S). </lang> Output :

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!></angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

HTML outputs rendered in firefox browser

Python

(Note: rendered versions of both outputs are shown at the foot of this section).

Simple solution

<lang python>csvtxt = \ Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!\

from cgi import escape

def _row2tr(row, attr=None):

   cols = escape(row).split(',')

return ('' + .join('%s' % data for data in cols) + '') def csv2html(txt): htmltxt = '

\n' for rownum, row in enumerate(txt.split('\n')): htmlrow = _row2tr(row) htmlrow = ' <TBODY>%s</TBODY>\n' % htmlrow htmltxt += htmlrow htmltxt += '

\n'

   return htmltxt

htmltxt = csv2html(csvtxt) print(htmltxt)</lang>

Sample HTML output

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Extra credit solution

<lang python>def _row2trextra(row, attr=None):

   cols = escape(row).split(',')
   attr_tr = attr.get('TR', )
   attr_td = attr.get('TD', )
   return (('<TR%s>' % attr_tr)

+ .join('<TD%s>%s' % (attr_td, data) for data in cols) + '') def csv2htmlextra(txt, header=True, attr=None): ' attr is a dictionary mapping tags to attributes to add to that tag' attr_table = attr.get('TABLE', ) attr_thead = attr.get('THEAD', ) attr_tbody = attr.get('TBODY', ) htmltxt = '<TABLE%s>\n' % attr_table for rownum, row in enumerate(txt.split('\n')): htmlrow = _row2trextra(row, attr) rowclass = ('THEAD%s' % attr_thead) if (header and rownum == 0) else ('TBODY%s' % attr_tbody) htmlrow = ' <%s>%s</%s>\n' % (rowclass, htmlrow, rowclass[:5]) htmltxt += htmlrow htmltxt += '\n'

   return htmltxt

htmltxt = csv2htmlextra(csvtxt, True,

                       dict(TABLE=' border="1" summary="csv2html extra program output"',
                            THEAD=' bgcolor="yellow"',
                            TBODY=' bgcolor="orange"' 
                            )
                       )

print(htmltxt)</lang>

Sample HTML output

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

HTML outputs rendered in firefox browser

Ruby

The extra credit version has one extra line compared to the non-extra credit version. To output a header, simply add "header" to the command line:

 ruby csv2html.rb header

I/O is done through standard input/output. <lang ruby>require 'cgi'

puts '

' def row2html str, wrap = "td" "" + str.split(",").map { |cell| "<#{wrap}>#{CGI.escapeHTML cell}</#{wrap}>" }.join + "" end puts row2html gets.chomp, "th" if ARGV.delete "header" while str = gets puts row2html str.chomp end puts "

"</lang>Sample output:<lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Seed7

The library html_ent.s7i defines the function encodeHtmlContent, which replaces characters with HTML entities. E.g.: '<' is replaced by <. <lang seed7>$ include "seed7_05.s7i";

 include "html_ent.s7i";

const string: csvData is "\

   \Character,Speech\n\
   \The multitude,The messiah! Show us the messiah!\n\
   \Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>\n\
   \The multitude,Who are you?\n\
   \Brians mother,I'm his mother; that's who!\n\
   \The multitude,Behold his mother! Behold his mother!\n";

const proc: main is func

 local
   var string: line is "";
   var string: column is "";

const array [boolean] string: columnStartTag is [boolean] ("", ""); const array [boolean] string: columnEndTag is [boolean] ("", ""); var boolean: firstLine is TRUE; begin writeln("

"); for line range split(csvData, '\n') do write(""); for column range split(line, ',') do write(columnStartTag[firstLine] <& encodeHtmlContent(column) <& columnEndTag[firstLine]); end for; writeln(""); firstLine := FALSE; end for; writeln("

");

 end func;</lang>

Output: <lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Output viewed with a browser:

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

Tcl

Library: Tcllib (Package: csv)

Library: Tcllib (Package: html)

Library: Tcllib (Package: struct::queue)

<lang tcl>package require Tcl 8.5 package require csv package require html package require struct::queue

set csvData "Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!"

struct::queue rows foreach line [split $csvData "\n"] {

   csv::split2queue rows $line

} html::init puts [subst {

   [html::openTag table {summary="csv2html program output"}]
   [html::while {[rows size]} {

[html::row {*}[html::quoteFormValue [rows get]]]

   }]
   [html::closeTag]

}]</lang>

Extra credit version: <lang tcl>package require Tcl 8.5 package require csv package require html package require struct::queue

set csvData "Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother!"

html::init {

   table.border 1
   table.summary "csv2html program output"
   tr.bgcolor orange

}

Helpers; the html package is a little primitive otherwise

proc table {contents {opts ""}} {

   set out [html::openTag table $opts]
   append out [uplevel 1 [list subst $contents]]
   append out [html::closeTag]

} proc tr {list {ropt ""}} {

   set out [html::openTag tr $ropt]
   foreach x $list {append out [html::cell "" $x td]}
   append out [html::closeTag]

}

Parse the CSV data

struct::queue rows foreach line [split $csvData "\n"] {

   csv::split2queue rows $line

}

Generate the output

puts [subst {

   [table {

[tr [html::quoteFormValue [rows get]] {bgcolor="yellow"}] [html::while {[rows size]} { [tr [html::quoteFormValue [rows get]]] }]

}]

}]</lang> Output:

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away! </angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

TUSCRIPT

<lang tuscript> $$ MODE TUSCRIPT MODE DATA $$ csv=* Character,Speech The multitude,The messiah! Show us the messiah! Brians mother,<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry> The multitude,Who are you? Brians mother,I'm his mother; that's who! The multitude,Behold his mother! Behold his mother! $$ htmlhead=* <!DOCTYPE html system> <html> <head> <title>Life of Brian</title> <style type="text/css"> th {background-color:orange} td {background-color:yellow}

</style></head><body>

$$ BUILD X_TABLE txt2html=* << < >> > $$ MODE TUSCRIPT file="brian.html" ERROR/STOP CREATE (file,FDF-o,-std-) csv=EXCHANGE (csv,txt2html) x=SPLIT (csv,":,:",row1,row2) ACCESS html: WRITE/ERASE/RECORDS/UTF8 $file s,html WRITE html htmlhead LOOP n,td1=row1,td2=row2 IF (n==1) THEN row=CONCAT ("")

ELSE

row=CONCAT ("")

ENDIF WRITE html row ENDLOOP

WRITE html "

",td1,"	",td2,"
",td1,"	",td2,"

</body></html>"

ENDACCESS/PRINT html </lang>

Output (source code)

<lang html5><!DOCTYPE html system> <html> <head> <title>Life of Brian</title> <style type="text/css"> th {background-color:orange} td {background-color:yellow}

</style></head><body>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</body></html>

</lang>

Output (rendered)

TXR

<lang txr>@(collect) @char,@speech @(end) @(output :filter :to_html)

@ (repeat) @ (end)

@char

@speech

@(end)</lang>

Note some similarities in the output generation to the AWS template system in the Ada solution. In AWS, @@TABLE@@ does something similar to TXR's @(repeat): repeating the section of a template as many times as the vector variables have items.

Output:

$ txr csv.txr  csv.txt

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

Vedit macro language

This solution converts the table in-place in current edit buffer. If a block is highlighted, only the block is converted. If no block highlighted, the entire file is converted.

<lang vedit>if (BB < 0) { // block not set

   BB(0)               // convert entire file
   BE(File_Size)

}

// Convert special characters into entities Replace_Block("&","&", BB, BE, BEGIN+ALL+NOERR) Replace_Block("<","<", BB, BE, BEGIN+ALL+NOERR) Replace_Block(">",">", BB, BE, BEGIN+ALL+NOERR)

// Convert CSV into HTML table Goto_Pos(BB)

IT('

') IN

80 = Cur_Pos

Goto_Pos(BE) IT("

")

81 = Cur_Line

IN Goto_Pos(#80) while (Cur_Line < #81) {

IT(" ") Replace_Block(",","",Cur_Pos,EOL_Pos,ALL+NOERR)

EOL

IT("") Line(1) } BB(Clear)</lang> Output: <lang html5>

Character	Speech
The multitude	The messiah! Show us the messiah!
Brians mother	<angry>Now you listen here! He's not the messiah; he's a very naughty boy! Now go away!</angry>
The multitude	Who are you?
Brians mother	I'm his mother; that's who!
The multitude	Behold his mother! Behold his mother!

</lang>

@@ Line 1,084: / Line 1,084: @@
 '''Compact version'''
-<lang haskell>split p s = case dropWhile p s of [] -> []
+<lang haskell>import Data.List (unfoldr)
+split p = unfoldr (\s -> case dropWhile p s of [] -> Nothing
-                                  ss -> w : split p xs where (w, xs) = break p ss
+                                               ss -> Just $ break p ss)
 main = interact (\csv -> "<table>\n" ++
     (unlines $ map ((\cols -> "<tr>\n" ++
-        (foldl1 (++) $ map (\x -> "  <td>" ++ concatMap (\c ->
+        (concatMap (\x -> "  <td>" ++ concatMap (\c ->
             case c of {'<' -> "&lt;"; '>' -> "&gt;";
 			'&' -> "&amp;"; '"' -> "&quot;"; _ -> [c]}) x