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POc gtk+: loading a text file into a GtkSourceView's TextBuffer
 

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  1. POc gtk+: loading a text file into a GtkSourceView's TextBuffer
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    <p>I'm writing a program using the C language with gtk+ and gtksourceview-2.0.</p> <p>I'm using a GtkFileChooser for the user to choose a file and when he clicks on it, i want the content to be loaded to the GtkSourceView' TextBuffer</p> <p>this is the function that gets executed when a user double click's a file on the GtkFileChooser:</p> <pre><code>void on_file_activated(GtkWidget *widget, gpointer data) { GFile *file; FILE *fp; gchar *path_name; long file_size; gchararray file_buffer; file = gtk_file_chooser_get_file(GTK_FILE_CHOOSER(widget)); path_name=g_file_get_path(file); g_debug("%s is chosen\n", path_name); fp=fopen(path_name, "r"); g_assert( fp != NULL); fseek(fp, 0L, SEEK_END); file_size = ftell(fp); rewind(fp); g_debug("file size: %ld\n",file_size*sizeof(gchar)); file_buffer=calloc(file_size, sizeof(gchar)); g_assert(file_buffer != NULL); fread(&amp;file_buffer,file_size,1,fp); g_debug("after fread"); //file_buffer[file_size*sizeof(gchar)]=0; //g_debug("after adding zero: %s",file_buffer); gtk_text_buffer_set_text (textbuffer, file_buffer,2); g_debug("after set text"); g_object_unref(file); } </code></pre> <p>this is the output of my application:</p> <pre><code>** (tour_de_gtk:18107): DEBUG: /home/ufk/Projects/gtk-projects/tour-de-gtk/Debug/src/examples/example_gtk_label/main.c is chosen ** (tour_de_gtk:18107): DEBUG: file size: 16 ** (tour_de_gtk:18107): DEBUG: after fread </code></pre> <p>after then i get a segmentation fault on the command gtk_text_buffer_set_text</p> <p>as you can see i have two commands that are commented out. trying to g_debug the buffer which obviously creates a segmentation fault because i didn't add a zero to the end of the string, and even when I try to add zero to the end of the string i get a segmentation fault. I probably did something wrong.</p> <p>here i'm trying to write only the first two characters of the buffer but with no luck.</p> <p>any ideas?</p> <h1>update</h1> <p>the finished function:</p> <pre><code>void on_file_activated(GtkWidget *widget, gpointer data) { GFile *file; gchar *path_name; long file_size; gchar *file_buffer; GError *error; gboolean read_file_status; file = gtk_file_chooser_get_file(GTK_FILE_CHOOSER(widget)); path_name=g_file_get_path(file); g_debug("%s is chosen\n", path_name); read_file_status=g_file_get_contents (path_name,&amp;file_buffer,NULL, &amp;error); if (read_file_status == FALSE) { g_error("error opening file: %s\n",error &amp;&amp; error-&gt;message ? error-&gt;message : "No Detail"); return; } gtk_text_buffer_set_text (textbuffer, file_buffer,-1); g_debug("after set text"); g_object_unref(file); } </code></pre>
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