HTML DSL in C https://github.com/letoh/html-dsl

demo.c

#include <stdio.h>

#include "html.h"

int main(int argc, char *argv[])
{
        html(
                head(
                        title("Site Title"),
                        script("http://test.com/test.js"),
                        css("css/test.css"),
                        js(
function foo()
{
        alert("abc");
}
                                )),
                body(
                        img("banner.jpg", id="banner"),
                        img("line.jpg"),
                        h1(raw(chapter 1)),
                        raw(
<form method="post" action="test.cgi">
        <input type="submit" value="go">
</form>
                                )
                        ));

        return 0;
}

gistfile1.c

static void _body(void)
{
    div(id="ctrlbar",
        div(id="loginTrigger" align="right" style="margin: 5px 10px;",
            span(onclick="popup('login');", raw(login)))
        );

    div(id="logo");
    center(div(id="global", img("/img/image.jpg")));
    div(id="login" class="container",
        center(
            div(id="msgbox" class="alert", _msg()),
            form(post, "/index.do", "loginForm", onsubmit="return checkLoginInput(this)",
                 table(style="",
                       tr(td(label("User", for="user")), td(text("user"))),
                       tr(td(label("Password", for="pass")), td(pass("pass")))
                     ), br,
                 hidden("checklogin", "1"),
                 submit(name="act" value="login" class="btn")
                ) /* form */
            ) /* center */
        ) /* div */ ;
}

int main(void)
{
    const char *val;
    cgi_init();
    utils_cgi_start();

    islogin = isAuth(LOGIN_USER);
    if(islogin)
    {
        if((val = cgi_query("act")) && !strncmp(val, "logout", 7))
        {
            logout(LOGIN_USER);
            utils_redirect("/index.do", 2,
                           "logout success!!<br />\ngo back to home in 2 seconds");
            return 0;
        }
        else
        {
            utils_redirect("/demo.do", 0, "redirecting...");
            return 0;
        }
    }
    else if(NULL != (val = cgi_query("checklogin")) && 1 == atoi(val))
    {
        if(checkLogin(cgi_query("user"), cgi_query("pass")))
        {
            utils_redirect("/demo.do", 2,
                           "login success!!<br />\ni'll take you to the demo page!");
            return 0;
        }
        else
        {
            loginFailed = 1;
        }
    }

    html(head(_head()), body(_body()));
    return 0;
}

html.h

#ifndef _HTML_H_
#define _HTML_H_

#define _t(tag) printf("<" tag ">\n")

#define xstr(s)  #s

#define single(tag, ...)                                                \
        printf("<" xstr(tag) " " xstr(__VA_ARGS__) " />\n")

#define _vartag(t, a, ...) \
        printf("<" xstr(t) " " a " >\n");       \
        __VA_ARGS__;                                            \
        _t("/" xstr(t))

#define html(...) _vartag(html, attr(xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"), __VA_ARGS__)
#define head(...) _vartag(head, "", __VA_ARGS__) 
#define body(...) _vartag(body, "", __VA_ARGS__) 

#define title(s, ...)                                                           \
        _t("title");                                                            \
        printf(s, ## __VA_ARGS__);                                                                      \
        _t("/title")

#define meta(...) single(meta, __VA_ARGS__)

#define css(f)                                                                  \
        printf("<link rel=\"stylesheet\" type=\"text/css\" href=\"%s\" />\n", f)

//#define script(f)                                                                                                     \
//      printf("<script type=\"text/javascript\" src=\"%s\" />\n", f)
#define script(f)                                                               \
        printf("<script type=\"text/javascript\" src=\"%s\"></script>\n", f)

#define echo(r, ...) printf(r, ## __VA_ARGS__)
#define raw(r) echo(#r)
#define js(...)                                                                 \
        raw(<script type="text/javascript">);           \
        raw(__VA_ARGS__);                                                               \
        raw(</script>)

#define attr xstr

#define h1(...) _vartag(h1, "", __VA_ARGS__) 
#define h2(...) _vartag(h2, "", __VA_ARGS__) 
#define h3(...) _vartag(h3, "", __VA_ARGS__) 
#define h4(...) _vartag(h4, "", __VA_ARGS__) 

#define img(f, ...)                                                             \
        printf("<img src=\"%s\" %s />\n", f, # __VA_ARGS__) \

#define br printf("<br />\n")

#define div(a, ...)   _vartag(div, attr(a), __VA_ARGS__)
#define span(a, ...)  _vartag(span, attr(a), __VA_ARGS__)
#define center(...) _vartag(center, "", __VA_ARGS__)

/* table */
#define table(a, ...) _vartag(table, attr(a), ## __VA_ARGS__)
#define th(...) _vartag(th, "", ## __VA_ARGS__)
#define tr(...) _vartag(tr, "", ## __VA_ARGS__)
#define td(...) _vartag(td, "", ## __VA_ARGS__)

/** form
 *
 * form(GET, "/abc", "", ""
 *     [, <form input elements>]
 *     );
 *
 */
#define form(m, s, n, a, ...)                                                                                   \
        _vartag(form, attr(method=#m action=s name=n id=n a), ## __VA_ARGS__)

#define button(t, ...) _vartag(button, attr(__VA_ARGS__), echo(t))
#define label(t, ...)  _vartag(label, attr(__VA_ARGS__), echo(t))
#define input(...)     single(input, __VA_ARGS__)
#define submit(...)    input(type="submit" __VA_ARGS__)
#define text(n, ...)  input(type="text" name=n id=n __VA_ARGS__)
#define pass(n, ...)      input(type="password" name=n id=n __VA_ARGS__)
#define img2(s, ...)      input(type="image" src=s __VA_ARGS__)
#define hidden(n, v, ...)  input(type="hidden" name=n id=n value=v __VA_ARGS__)
#define radio(l, g, v, ...) label(l), input(type="radio" name=g value=v __VA_ARGS__)
#define check(l, g, v, ...) label(l), input(type="checkbox" name=g value=v __VA_ARGS__)

#define hr(...) single(hr, __VA_ARGS__)
#define url(t, src, ...)  _vartag(a, attr(href=src __VA_ARGS__), echo(t))

#endif /* _HTML_H_ */