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/*Copyright (c) 2008, Rajeesh K Nambiar *
* *
* Chathans is a free software; you can redistribute it and/or modify it under the terms*
* of GNU General Public License as published by the Free Software Foundation, either *
* version 3 of the License, or (at your option) any later version. *
* *
* Chathans is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;*
* without even implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.*
* See the GNU General Public License for more details. *
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gtk/gtk.h>
#include "callbacks.h"
#include "interface.h"
#include "support.h"
//Widgets - they are private to interface.c, so make them available here
GtkWidget *ascii_button, *mapping_button, *unicode_button;
GtkWidget *status_bar;
//Constants
const gchar *prog_name = "Chathans",
*version = "0.1",
*prog_descr= "\nChathans - a forontend to Payyans\nASCII to Unicode Converter\n",
*authors[]= {"Chathans:\n\tRajeesh K Nambiar <rajeeshknambiar@gmail.com>\n",
"Payyans:\n\tSanthosh Thottingal <santhosh.thottingal@gmail.com>",
"\tNishan Naseer <nishan.naseer@gmail.com>", NULL},
*copyright = "(c) 2008 Rajeesh K Nambiar",
*comments = "Chathans is a GTK frontend to Payyans ASCII to Unicode Converter",
*license = "Licensed under GNU GPL, version 3 or later",
*website = "http://smc.org.in/Payyans";
//Global Variables
static gchar *ascii_file, *mapping_file, *unicode_file;
//Function Prototypes
void init_file_choosers (GtkWidget *, GtkWidget *, GtkWidget *);
gboolean confirm_file_overwrite(const gchar *);
void start_new_project (GtkMenuItem *menuitem, gpointer user_data)
{
/* Starting a new project would clear the entries in file chooser
* buttons. But, is it a good idea? Many files might be put together
* in the same folder or so... lets see
*/
initialize_widgets(GTK_WIDGET(menuitem));
}
void display_help_topics (GtkMenuItem *menuitem, gpointer user_data)
{
}
void
display_about (GtkMenuItem *menuitem, gpointer user_data)
{
GtkWidget *AboutWidget;
AboutWidget = gtk_about_dialog_new();
gtk_about_dialog_set_program_name(GTK_ABOUT_DIALOG(AboutWidget), prog_name);
gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(AboutWidget), version);
gtk_about_dialog_set_authors(GTK_ABOUT_DIALOG(AboutWidget), authors);
gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(AboutWidget), copyright);
gtk_about_dialog_set_comments(GTK_ABOUT_DIALOG(AboutWidget), comments);
gtk_about_dialog_set_license(GTK_ABOUT_DIALOG(AboutWidget), license);
gtk_about_dialog_set_website(GTK_ABOUT_DIALOG(AboutWidget), website);
gtk_dialog_run(GTK_DIALOG(AboutWidget));
gtk_widget_destroy(AboutWidget);
}
void initialize_widgets (GtkWidget *window)
{
//Since all the Widgets are private members in interface.c, lookup is needed
ascii_button = lookup_widget(GTK_WIDGET(window),"AsciiFileButton");
mapping_button = lookup_widget(GTK_WIDGET(window),"MappingFileButton");
unicode_button = lookup_widget(GTK_WIDGET(window),"UnicodeFileButton");
// Set the Filters and default directories for FileChooser buttons
init_file_choosers(ascii_button, mapping_button, unicode_button);
status_bar = lookup_widget(GTK_WIDGET(window), "StatusBar");
gtk_statusbar_push(GTK_STATUSBAR(status_bar),
gtk_statusbar_get_context_id(GTK_STATUSBAR(status_bar),"convert"),
g_strconcat(prog_name," ",version,NULL));
}
void init_file_choosers (GtkWidget *ascii_button, GtkWidget *mapping_button, GtkWidget *unicode_button)
{
const gchar* const *sys_data_dir; //IMP: Note the "gchar* *" thing. "gchar **" won't work!
gchar *path;
GFileTest exists = G_FILE_TEST_EXISTS;
GtkFileFilter *filter = gtk_file_filter_new();
if (ascii_file == NULL)
ascii_file = g_strdup(g_get_home_dir()); // Default to user's home
if (unicode_file == NULL)
unicode_file = g_strdup(g_get_home_dir());
if (mapping_file == NULL){
//Here we get the system data dirs, and we should search for payyan's
//mapping file. Alternatively, if we can find payyan's data dir, will be better
sys_data_dir = g_get_system_data_dirs(); // Array of gchar*
guint i;
for (i=0; *(sys_data_dir+i) != NULL; i++) {
path = g_strconcat(*(sys_data_dir+i), "payyans/maps", NULL);
if (g_file_test(path, exists)){
mapping_file = g_strdup(path);
break;
}
}
}
gtk_file_filter_set_name(filter, "*.txt");
// output Unicode file of type '.txt'
gtk_file_filter_add_pattern(filter, "*.txt");
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(unicode_button), filter);
// input ASCII file can be of type '.txt' or '.pdf'
gtk_file_filter_set_name(filter, "*.txt, *.pdf");
gtk_file_filter_add_pattern(filter, "*.pdf");
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(ascii_button), filter);
// Set the default directories
gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(ascii_button), ascii_file);
gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(mapping_button), mapping_file);
gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(unicode_button), unicode_file);
return;
}
// Here is where we interface with Payyans, who does the real job of conversion
void convert_asccii_to_unicode (GtkButton *button, gpointer user_data)
{
GFileTest test_cond = G_FILE_TEST_IS_REGULAR;
gchar *ascii_dir, *ascii_base, *temp=NULL;
gchar *payyans=NULL, *args=NULL, *msg=NULL;
gint result = -1;
guint context_id = gtk_statusbar_get_context_id(GTK_STATUSBAR(status_bar),"convert");
ascii_file = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(ascii_button));
mapping_file = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(mapping_button));
unicode_file = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(unicode_button));
if (! g_file_test(ascii_file, test_cond)){
msg = g_strdup("Choose an ASCII file as input !!");
goto conv_quit;
}
if (! g_file_test(mapping_file, test_cond)){
msg = g_strdup("Choose a Mapping file for conversion !!");
goto conv_quit;
}
//If Unicode file name is not input, create one.
if (! g_file_test(unicode_file, test_cond)){
temp = unicode_file; //Keep the backup. If conversion failed,
//we need to restore this value
ascii_base = g_path_get_basename(ascii_file);
ascii_dir = g_path_get_dirname(ascii_file);
gchar *s,*p = g_strrstr(ascii_base, ".txt");
if (p == NULL)
p = g_strrstr(ascii_base, ".pdf");
s = g_strdup(ascii_base);
s[p - ascii_base] = '\0'; //Strip the extension from filename
unicode_file = g_strconcat(ascii_dir,"/",s, "_unicode.txt",NULL);
}
// Check if output file overwrites itself
if ( g_file_test(unicode_file, G_FILE_TEST_EXISTS) )
if (! confirm_file_overwrite(unicode_file) )
goto conv_quit;
// Now locate the 'payyans' binary
payyans = g_find_program_in_path("payyans");
if (payyans == NULL){ // Whoops, you don't have payyans installed??
msg = g_strdup("Error: Payyans is not installed !!");
gtk_statusbar_push(GTK_STATUSBAR(status_bar), context_id, msg);
goto conv_quit;
}
// Prepare the arguments to be passed
// 'payyans (-p if pdf) -i ascii_file -m mapping_file -o unicode_file'
args = g_strconcat(g_str_has_suffix(ascii_file,".pdf")?" -p":"",
" -i \"", ascii_file, "\" -m \"",mapping_file,
"\" -o \"", unicode_file,"\"",NULL);
payyans = g_strconcat(payyans, " ", args, NULL);
result = system(payyans)/256; // I don't know why system() returns exit status
// multiplied by 256 !!!
switch (result)
{
case 0:
gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(unicode_button), unicode_file);
msg = g_strconcat("Converted Successfully to ",unicode_file,NULL);
break;
case 1:
msg = g_strdup("Error: pdftotext utility is not found !");
break;
case 2:
msg = g_strconcat("Error in mapping file ",mapping_file,NULL);
break;
default:
msg = g_strdup("Error in conversion !");
break;
}
conv_quit:
//Display the log message
gtk_statusbar_push(GTK_STATUSBAR(status_bar), context_id, msg);
//Restore unicode file path, if conversion isn't successfull
if (result != 0)
unicode_file = temp;
g_free((gpointer)msg);
g_free((gpointer)payyans);
g_free((gpointer)args);
return;
}
gboolean confirm_file_overwrite(const gchar* ucode_file)
{
GtkWidget *dialog, *label;
gchar *mesg;
dialog = gtk_dialog_new_with_buttons("Overwrite?",
NULL,
GTK_DIALOG_MODAL, // | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_STOCK_OK,
GTK_RESPONSE_ACCEPT,
GTK_STOCK_NO,
GTK_RESPONSE_REJECT,
NULL);
mesg = g_strconcat("\nFile \"", ucode_file, "\" exists.\nDo you wish to overwrite?\n", NULL);
label = gtk_label_new(mesg);
gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), label);
gtk_widget_show_all(dialog);
if (gtk_dialog_run(GTK_DIALOG(dialog)) != GTK_RESPONSE_ACCEPT) {
gtk_statusbar_push(GTK_STATUSBAR(status_bar),
gtk_statusbar_get_context_id(GTK_STATUSBAR(status_bar),"convert"),
"Conversion cancelled.");
gtk_widget_destroy(dialog);
return FALSE;
}
gtk_widget_destroy(dialog);
return TRUE;
}
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