[gnome-latex: 177/205] Output filter: file size in KB or MB

[Sébastien Wilmet <swilmet src gnome org>]

commit 92c86c4a5d33310d2524cde036e9456095ddbb82
Author: Sébastien Wilmet <sebastien wilmet gmail com>
Date:   Thu Jan 21 14:51:30 2010 +0100

    Output filter: file size in KB or MB
    
    In detect_other(), we try to detect the line "Output written on...",
    which contain the file size in bytes. We convert this file size in a
    human readable format.

 TODO                      |  1 -
 src/latex_output_filter.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 56 insertions(+), 2 deletions(-)
---
diff --git a/TODO b/TODO
index ad78281..abd0720 100644
--- a/TODO
+++ b/TODO
@@ -2,7 +2,6 @@ TODO LaTeXila
 
 - User-friendly output for the compilation
        - sensitivity of buttons (previous/next error/...)
-       - convert file size in KB or MB or ... ("Output written on ...")
 
 - File browser
        - optimisations, check memory leaks, ...
diff --git a/src/latex_output_filter.c b/src/latex_output_filter.c
index 26eaf79..d357605 100644
--- a/src/latex_output_filter.c
+++ b/src/latex_output_filter.c
@@ -85,6 +85,7 @@ static GRegex *reg_tex_error = NULL;
 static GRegex *reg_error_line = NULL;
 
 static GRegex *reg_file_pop = NULL;
+static GRegex *reg_other_bytes = NULL;
 
 // for statistics
 static gint nb_badboxes = 0;
@@ -151,6 +152,7 @@ latex_output_filter_init (void)
        reg_error_line = g_regex_new ("^l\\.([0-9]+)(.*)", 0, 0, NULL);
 
        reg_file_pop = g_regex_new ("(\\) )?:<-$", 0, 0, NULL);
+       reg_other_bytes = g_regex_new ("([0-9]+) bytes", 0, 0, NULL);
 
        msg.line = NO_LINE;
 }
@@ -171,6 +173,7 @@ latex_output_filter_free (void)
        g_regex_unref (reg_tex_error);
        g_regex_unref (reg_error_line);
        g_regex_unref (reg_file_pop);
+       g_regex_unref (reg_other_bytes);
        g_free ((gpointer) path);
 }
 
@@ -523,7 +526,59 @@ detect_other (const gchar *line)
 {
        if (strstr (line, "Output written on"))
        {
-               msg.message = g_strdup (line);
+               /* try to show the file size in a human readable format */
+               if (g_regex_match (reg_other_bytes, line, 0, NULL))
+               {
+                       gchar **strings = g_regex_split (reg_other_bytes, line, 0);
+                       gint nb_bytes = strtol (strings[1], NULL, 10);
+                       g_strfreev (strings);
+
+                       gboolean replace = FALSE;
+                       gchar *human_size = NULL;
+
+                       // do nothing
+                       if (nb_bytes < 1024)
+                               msg.message = g_strdup (line);
+
+                       // size in KB (less than 1 MB)
+                       else if (nb_bytes < 1024 * 1024)
+                       {
+                               gint nb_kb = nb_bytes / 1024;
+                               human_size = g_strdup_printf ("%d KB", nb_kb);
+                               replace = TRUE;
+                       }
+
+                       // size in MB (with one decimal)
+                       else
+                       {
+                               gdouble nb_mb = (gdouble) nb_bytes / (1024.0 * 1024.0);
+                               human_size = g_strdup_printf ("%.1f MB", nb_mb);
+                               replace = TRUE;
+                       }
+
+                       if (replace)
+                       {
+                               GError *error = NULL;
+                               gchar *new_line = g_regex_replace_literal (reg_other_bytes,
+                                               line, -1, 0, human_size, 0, &error);
+                               g_free (human_size);
+
+                               // shit!
+                               if (error != NULL)
+                               {
+                                       g_error_free (error);
+                                       g_free (new_line);
+                                       msg.message = g_strdup (line);
+                               }
+                               else
+                                       msg.message = new_line;
+                       }
+               }
+               
+               // no "bytes" found
+               else
+                       msg.message = g_strdup (line);
+
                msg.line = NO_LINE;
                msg.message_type = MESSAGE_TYPE_OTHER;
                print_msg ();