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file.c

/*
 *  Leafpad - GTK+ based simple text editor
 *  Copyright (C) 2004-2005 Tarot Osuji
 *  
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <gtk/gtk.h>
#include <stdio.h>
#include <string.h>
#include "file.h"
#include "view.h"
#include "encoding.h"
#include "dialog.h"
#include "menu.h"
#include "i18n.h"
//#include "undo.h"

gboolean check_file_writable(gchar *filename)
{
      FILE *fp;
      
      if ((fp = fopen(filename, "a")) != NULL) {
            fclose(fp);
            return TRUE;
      }
      return FALSE;
}

gchar *get_file_basename(gchar *filename, gboolean bracket)
{
      gchar *basename = NULL;
      gchar *tmp;
      gboolean exist_flag;
      
      if (filename) {
            tmp = g_path_get_basename(
                  g_filename_to_utf8(filename, -1, NULL, NULL, NULL));
            exist_flag = g_file_test(
                  g_filename_to_utf8(filename, -1, NULL, NULL, NULL),
                  G_FILE_TEST_EXISTS);
      } else {
            tmp = g_strdup(_("Untitled"));
            exist_flag = FALSE;
      }
      
      if (bracket) {
            if (!exist_flag) {
                  GString *string = g_string_new(tmp);
                  g_string_prepend(string, "(");
                  g_string_append(string, ")");
                  basename = g_strdup(string->str);
                  g_string_free(string, TRUE);
            } else if (!check_file_writable(filename)) {
                  GString *string = g_string_new(tmp);
                  g_string_prepend(string, "<");
                  g_string_append(string, ">");
                  basename = g_strdup(string->str);
                  g_string_free(string, TRUE);
            }
      }
      
      if (!basename)
            basename = g_strdup(tmp);
      g_free(tmp);
      
      return basename;
}

gchar *parse_file_uri(gchar *uri)
{
      gchar *filename;
//    gchar **strs;
      
      if (strstr(uri, ":")) {
            if (g_strstr_len(uri, 5, "file:"))
                  filename = g_filename_from_uri(uri, NULL, NULL);
            else
                  return NULL;  // other URI error
      } else
            if (g_path_is_absolute(uri))
                  filename = g_strdup(uri);
            else
                  filename = g_build_filename(g_get_current_dir(), uri, NULL);
      
/*    if (strstr(filename, " ")) {
            strs = g_strsplit(filename, " ", -1);
            g_free(filename);
            filename = g_strjoinv("\\ ", strs);
            g_strfreev(strs);
      }
*/    
      return filename;
}

gint file_open_real(GtkWidget *view, FileInfo *fi)
{
      gchar *contents;
      gsize length;
      GError *err = NULL;
      const gchar *charset;
      gchar *str = NULL;
      GtkTextIter iter;
      
      GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
      
      if (!g_file_get_contents(fi->filename, &contents, &length, &err)) {
            if (g_file_test(fi->filename, G_FILE_TEST_EXISTS)) {
                  run_dialog_message(gtk_widget_get_toplevel(view),
                        GTK_MESSAGE_ERROR, err->message);
                  g_error_free(err);
                  return -1;
            }
            g_error_free(err);
            err = NULL;
            contents = g_strdup("");
      }
      
      fi->lineend = detect_line_ending(contents);
      if (fi->lineend != LF)
            convert_line_ending_to_lf(contents);
      
      if (fi->charset)
            charset = fi->charset;
      else {
            charset = detect_charset(contents);
            if (charset == NULL)
                  charset = get_default_charset();
      }

      if (length)
            do {
                  if (err) {
                        charset = "ISO-8859-1";
                        g_error_free(err);
                        err = NULL;
                  }
                  str = g_convert(contents, -1, "UTF-8", charset, NULL, NULL, &err);
            } while (err);
      else
            str = g_strdup("");
      g_free(contents);
      
      if (charset != fi->charset) {
            g_free(fi->charset);
            fi->charset = g_strdup(charset);
            if (fi->charset_flag)
                  fi->charset_flag = FALSE;
      }
      
//    undo_disconnect_signal(textbuffer);
//    undo_block_signal(buffer);
      force_block_cb_modified_changed(view);
      
      gtk_text_buffer_set_text(buffer, "", 0);
      gtk_text_buffer_get_start_iter(buffer, &iter);
      gtk_text_buffer_insert(buffer, &iter, str, strlen(str));
      gtk_text_buffer_get_start_iter(buffer, &iter);
      gtk_text_buffer_place_cursor(buffer, &iter);
      gtk_text_buffer_set_modified(buffer, FALSE);
      gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(view), &iter, 0, FALSE, 0, 0);
      g_free(str);
      
      force_unblock_cb_modified_changed(view);
      menu_sensitivity_from_modified_flag(FALSE);
//    undo_unblock_signal(buffer);
      
      return 0;
}

gint file_save_real(GtkWidget *view, FileInfo *fi)
{
      FILE *fp;
      GtkTextIter start, end;
      gchar *str;
      gsize rbytes, wbytes;
      GError *err = NULL;
      
      GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
      
      gtk_text_buffer_get_start_iter(buffer, &start);
      gtk_text_buffer_get_end_iter(buffer, &end);     
      str = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
      
      switch (fi->lineend) {
      case CR:
            convert_line_ending(&str, CR);
            break;
      case CR+LF:
            convert_line_ending(&str, CR+LF);
      }
      
      if (!fi->charset)
            fi->charset = g_strdup(get_default_charset());
      str = g_convert(str, -1, fi->charset, "UTF-8", &rbytes, &wbytes, &err);
      if (err) {
            switch (err->code) {
            case G_CONVERT_ERROR_ILLEGAL_SEQUENCE:
                  run_dialog_message(gtk_widget_get_toplevel(view),
                        GTK_MESSAGE_ERROR, _("Can't convert codeset to '%s'"), fi->charset);
                  break;
            default:
                  run_dialog_message(gtk_widget_get_toplevel(view),
                        GTK_MESSAGE_ERROR, err->message);
            }
            g_error_free(err);
            return -1;
      }
      
      fp = fopen(fi->filename, "w");
      if (!fp) {
            run_dialog_message(gtk_widget_get_toplevel(view),
                  GTK_MESSAGE_ERROR, _("Can't open file to write"));
            return -1;
      }
      if (fputs(str, fp) == EOF) {
            run_dialog_message(gtk_widget_get_toplevel(view),
                  GTK_MESSAGE_ERROR, _("Can't write file"));
            return -1;
      }
      
      gtk_text_buffer_set_modified(buffer, FALSE);
      fclose(fp);
      g_free(str);
      
      return 0;
}

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