Created
June 30, 2009 11:33
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[c][gtk][webkit] Print entire HTML text after processed JavaScript
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/* | |
* Print entire HTML text after processed JavaScript | |
* | |
* build: | |
* FLAGS=`pkg-config --cflags --libs gtk+-x11-2.0 glib-2.0 webkit-1.0` | |
* gcc -Wall $FLAGS -lgc getbodytext_gc.c -o getbodytext_gc | |
* | |
* usage: | |
* /usr/bin/xvfb-run ./getbodytext test.html | |
* | |
*/ | |
#include <gc/gc.h> | |
#include <glib.h> | |
#include <glib/gprintf.h> | |
#include <gtk/gtk.h> | |
#include <gdk/gdk.h> | |
#include <webkit/webkit.h> | |
#include <JavaScriptCore/JavaScript.h> | |
static const gchar code[] = | |
"(function () {" | |
" var scripts = document.getElementsByTagName(\"script\");" | |
" for (var i = 0; i < scripts.length; i += 1) {" | |
" scripts[i].innerHTML = \"\";" | |
" }" | |
" var range = document.createRange();" | |
" range.selectNodeContents(document.body);" | |
" return range.toString();" | |
"})()"; | |
/* const gchar code[] = "document.body.innerHTML"; */ | |
static GString * | |
toGString(JSStringRef jsstr) | |
{ | |
size_t size; | |
gchar * buf; | |
size = JSStringGetMaximumUTF8CStringSize(jsstr); | |
buf = g_alloca(size); | |
JSStringGetUTF8CString(jsstr, buf, size); | |
return g_string_new(buf); | |
} | |
/* | |
* see: http://webkitgtk.org/reference/webkitgtk-WebKitWebView.html signals | |
*/ | |
static void | |
loaded(WebKitWebView * view, WebKitWebFrame * frame, gpointer data) | |
{ | |
/* | |
const gchar * title; | |
*/ | |
JSGlobalContextRef gc; | |
JSStringRef script; | |
JSValueRef result; | |
/* | |
title = webkit_web_frame_get_title(frame); | |
g_printf("%s\n", title); | |
*/ | |
gc = webkit_web_frame_get_global_context(frame); | |
script = JSStringCreateWithUTF8CString(code); | |
result = JSEvaluateScript(gc, script, NULL, NULL, 0, NULL); | |
/* JSStringRelease(script); */ | |
if (JSValueIsString(gc, result)) { | |
JSStringRef jsstr; | |
GString * gstr; | |
jsstr = JSValueToStringCopy(gc, result, NULL); | |
gstr = toGString(jsstr); | |
/* JSStringRelease(jsstr); */ | |
g_printf("%s\n", gstr->str); | |
/* g_string_free(gstr, TRUE); */ | |
} | |
gtk_main_quit(); | |
} | |
static void | |
init_gc(GMemVTable * memvtable) | |
{ | |
/* see: http://manpages.ubuntu.com/manpages/jaunty/man3/gc.3.html */ | |
GC_INIT(); | |
/* see: GMemVTable and g_mem_set_vtable | |
* http://library.gnome.org/devel/glib/stable/glib-Memory-Allocation.html | |
*/ | |
memvtable->malloc = GC_malloc; | |
memvtable->realloc = GC_realloc; | |
memvtable->free = GC_free; | |
memvtable->calloc = NULL; | |
memvtable->try_malloc = NULL; | |
memvtable->try_realloc = NULL; | |
g_mem_set_vtable(memvtable); | |
} | |
int | |
main(int argc, char * argv[]) | |
{ | |
GMemVTable memvtable; | |
GtkWidget * window; | |
GtkWidget * webview; | |
GString * url; | |
init_gc(&memvtable); | |
g_thread_init(NULL); | |
gdk_threads_init(); | |
gdk_threads_enter(); | |
gtk_init(&argc, &argv); | |
url = g_string_new(argv[1]); | |
if (!g_str_has_prefix(url->str, "http")) { | |
url = g_string_prepend(url, "file://"); | |
} | |
window = gtk_window_new(GTK_WINDOW_TOPLEVEL); | |
webview = webkit_web_view_new(); | |
gtk_container_add(GTK_CONTAINER(window), webview); | |
gtk_signal_connect(GTK_OBJECT(webview), "load-finished", | |
GTK_SIGNAL_FUNC(loaded), NULL); | |
webkit_web_view_open(WEBKIT_WEB_VIEW(webview), url->str); | |
/* g_string_free(url, TRUE); */ | |
gtk_widget_show_all(window); | |
gtk_main(); | |
gdk_threads_leave(); | |
return 0; | |
} |
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