Convert file encodings

Here's to a new bit of code!

I wrote this program once, called Tester, which my dad is using in his day-to-day language teaching.

I wrote the thing quite a long time ago, so it's a bit buggy here and there, and one of the problems is that it doesn't handle encodings well. Since dad is thinking about using Ubuntu, the mishandled encodings are a problem: he used to have them encoded as WINDOWS-1250, but the current settings allow him to use only UTF-8 on Ubuntu.

Hence, this program, to convert between the two. Since the files come in bulk, I figured doing entire directories at once is a good idea.

Also, I wrote it in about an hour and a bit, so it might be a bit buggy here and there...

Here's the code:

 
 1 #!/bin/bash 
 2  
 3 # Convert directory  
 4 # 
 5 # Convert text files in the directory from one encoding to another, 
 6 # all in a simple GUI. Converts between UTF-8 and WINDOWS-1250. 
 7 #  
 8 # Requires: 
 9 #   zenity 
10 #   iconv 
11 # Author: 
12 #   Konrad Siek 
13  
14  
15 # Get directory to convert files in 
16 directory=$(\ 
17     zenity \ 
18     --file-selection \ 
19     --directory \ 
20     --title="Select a directory to convert" \ 
21 ) 
22  
23 # If none selected, quit. 
24 if [ $? != 0 ] 
25 then 
26     exit 1 
27 fi 
28  
29 # Select source encoding from a list. 
30 source_encoding=$(\ 
31     zenity --list \ 
32     --column="Encoding" \ 
33     --title="Source encoding" \ 
34     --text="The files are currently encoded as... " \ 
35     WINDOWS-1250 UTF-8 \ 
36 ) 
37  
38 # If none selected, quit. 
39 if [ $? != 0 ] 
40 then 
41     exit 1 
42 fi 
43  
44 # Select destination encoding from a list. 
45 destination_encoding=$(\ 
46     zenity --list \ 
47     --column="Encoding" \ 
48     --title="Destination encoding" \ 
49     --text="And you want these files encoded as... " \ 
50     UTF-8 WINDOWS-1250 \ 
51 ) 
52  
53 # If none selected, quit. 
54 if [ $? != 0 ] 
55 then 
56     exit 1 
57 fi 
58  
59 # For all files in the selected directory... 
60 find "$directory" -type f | while read f 
61 do 
62     # Get information about the file. 
63     extension=${f#*.} 
64     basename=$(basename "$f" ".$extension") 
65     addition=$(echo "$destination_encoding" | tr -d - | tr [A-Z] [a-z]) 
66     output="$directory/$basename.$addition.$extension" 
67  
68     # Convert encoding. 
69     iconv \
70         --from-code="$source_encoding" \
71         --to-code="$destination_encoding" \
72         --output="$output" \
73         "$f" 
74  
75     echo "Created $directory/$basename.$addition.$extension" 
76 done 
77  
78 # Notify on finish 
79 zenity --info --text="Operation complete." --title="Complete" 
80  

The code is also available at GitHub as bash/convert_directory.