gemfeed/2024-12-15-random-helix-themes.html


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<h1 style='display: inline' id='random-helix-themes'>Random Helix Themes</h1><br />
<br />
<span class='quote'>Published at 2024-12-15T13:55:05+02:00; Last updated 2024-12-18</span><br />
<br />
<span>I thought it would be fun to have a random Helix theme every time I open a new shell. Helix is the text editor I use.</span><br />
<br />
<a class='textlink' href='https://helix-editor.com/'>https://helix-editor.com/</a><br />
<br />
<span>So I put this into my <span class='inlinecode'>zsh</span> dotfiles (in some <span class='inlinecode'>editor.zsh.source</span> in my <span class='inlinecode'>~</span> directory):</span><br />
<br />
<!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><b><u><font color="#000000">export</font></u></b> EDITOR=hx
<b><u><font color="#000000">export</font></u></b> VISUAL=$EDITOR
<b><u><font color="#000000">export</font></u></b> GIT_EDITOR=$EDITOR
<b><u><font color="#000000">export</font></u></b> HELIX_CONFIG_DIR=$HOME/.config/helix

editor::helix::random_theme () {
    <i><font color="silver"># May add more theme search paths based on OS. This one is</font></i>
    <i><font color="silver"># for Fedora Linux, but there is also MacOS, etc.</font></i>
    <b><u><font color="#000000">local</font></u></b> -r theme_dir=/usr/share/helix/runtime/themes
    <b><u><font color="#000000">if</font></u></b> [ ! -d $theme_dir ]; <b><u><font color="#000000">then</font></u></b>
        echo <font color="#808080">"Helix theme dir $theme_dir doesnt exist"</font>
        <b><u><font color="#000000">return</font></u></b> <font color="#000000">1</font>
    <b><u><font color="#000000">fi</font></u></b>

    <b><u><font color="#000000">local</font></u></b> -r config_file=$HELIX_CONFIG_DIR/config.toml
    <b><u><font color="#000000">local</font></u></b> -r random_theme=<font color="#808080">"$(basename "</font>$(ls $theme_dir \
        | grep -v random.toml | grep .toml | sort -R \
        | head -n <font color="#000000">1</font>)<font color="#808080">" | cut -d. -f1)"</font>

    sed <font color="#808080">"/^theme =/ { s/.*/theme = </font>\"<font color="#808080">$random_theme</font>\"<font color="#808080">/; }"</font> \
        $config_file &gt; $config_file.tmp &amp;&amp; 
        mv $config_file.tmp $config_file
}

<b><u><font color="#000000">if</font></u></b> [ -f $HELIX_CONFIG_DIR/config.toml ]; <b><u><font color="#000000">then</font></u></b>
    editor::helix::random_theme
<b><u><font color="#000000">fi</font></u></b>
</pre>
<br />
<span>So every time I open a new terminal or shell, <span class='inlinecode'>editor::helix::random_theme</span> gets called, which randomly selects a theme from all installed ones and updates the helix config accordingly.</span><br />
<br />
<!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre>[paul@earth] ~ % editor::helix::random_theme
[paul@earth] ~ % head -n <font color="#000000">1</font> ~/.config/helix/config.toml
theme = <font color="#808080">"jellybeans"</font>
[paul@earth] ~ % editor::helix::random_theme
[paul@earth] ~ % head -n <font color="#000000">1</font> ~/.config/helix/config.toml
theme = <font color="#808080">"rose_pine"</font>
[paul@earth] ~ % editor::helix::random_theme
[paul@earth] ~ % head -n <font color="#000000">1</font> ~/.config/helix/config.toml
theme = <font color="#808080">"noctis"</font>
[paul@earth] ~ %
</pre>
<br />
<h2 style='display: inline' id='a-better-version'>A better version</h2><br />
<br />
<span class='quote'>Update 2024-12-18: This is an improved version, which works cross platform (e.g., also on MacOS) and multiple theme directories:</span><br />
<br />
<!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><b><u><font color="#000000">export</font></u></b> EDITOR=hx
<b><u><font color="#000000">export</font></u></b> VISUAL=$EDITOR
<b><u><font color="#000000">export</font></u></b> GIT_EDITOR=$EDITOR
<b><u><font color="#000000">export</font></u></b> HELIX_CONFIG_DIR=$HOME/.config/helix

editor::helix::theme::get_random () {
    <b><u><font color="#000000">for</font></u></b> dir <b><u><font color="#000000">in</font></u></b> $(hx --health \
        | awk <font color="#808080">'/^Runtime directories/ { print $3 }'</font> | tr <font color="#808080">';'</font> <font color="#808080">' '</font>); <b><u><font color="#000000">do</font></u></b>
        <b><u><font color="#000000">if</font></u></b> [ -d $dir/themes ]; <b><u><font color="#000000">then</font></u></b>
            ls $dir/themes
        <b><u><font color="#000000">fi</font></u></b>
    <b><u><font color="#000000">done</font></u></b> | grep -F .toml | sort -R | head -n <font color="#000000">1</font> | cut -d. -f<font color="#000000">1</font>
}

editor::helix::theme::set () {
    <b><u><font color="#000000">local</font></u></b> -r theme=<font color="#808080">"$1"</font>; <b><u><font color="#000000">shift</font></u></b>

    <b><u><font color="#000000">local</font></u></b> -r config_file=$HELIX_CONFIG_DIR/config.toml

    sed <font color="#808080">"/^theme =/ { s/.*/theme = </font>\"<font color="#808080">$theme</font>\"<font color="#808080">/; }"</font> \
        $config_file &gt; $config_file.tmp &amp;&amp; 
        mv $config_file.tmp $config_file
}

<b><u><font color="#000000">if</font></u></b> [ -f $HELIX_CONFIG_DIR/config.toml ]; <b><u><font color="#000000">then</font></u></b>
    editor::helix::theme::<b><u><font color="#000000">set</font></u></b> $(editor::helix::theme::get_random)
<b><u><font color="#000000">fi</font></u></b>
</pre>
<br />
<span>I hope you had some fun. E-Mail your comments to <span class='inlinecode'>paul@nospam.buetow.org</span> :-)</span><br />
<br />
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