✨ Add ability to download nerdfont symbols (#10)

Same as the other symbol download options, this one takes a list of all
nerdfont icons and wrangles them into shape to be usable with the emoji
picker. Can be used by invoking `bemoji -D nerd` or `bemoji -D all`.

Fixes #10.

CHANGELOG.md

@@ -10,9 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Pass through return code 1 from selection tool
-- (!) Number of displayed recent emoji can be set with `-P` option. This replaces previous `-P`
+- (!) Number of displayed recent emoji can be set with `-P` option:
-  history flag toggle. Use number to set amount of recent entries to display, `-P3`. To
+  This replaces previous `-P` history flag toggle. Use number to set amount of recent
-  completely hide history use `-P0`
+  entries to display, `-P3`. To completely hide history use `-P0`.
+- Add nerdfont emoji set download with `-D nerd`
 
 ### Changed
 

README.md

@@ -184,24 +184,24 @@ The path can also be a weblink which bemoji will download and use:
 bemoji -f "https://raw.githubusercontent.com/jchook/emoji-menu/master/data/emojis.txt"
 ```
 
-### Download additional emoji set
+### Download additional emoji sets
 
 bemoji automatically downloads an emoji list for you to use on first invocation.
-By default, it only downloads emoji, though you can have it download math symbols as well.
+By default, it only downloads emoji, though you can have it download math symbols and nerdfont icons as well.
 To download additional sets, execute bemoji like the following:
 
 ```bash
 bemoji -D all
 ```
 
-This will download *all* default sets bemoji knows - which is currently the default emoji list and a long list of math symbols.
+This will download *all* default sets bemoji knows - which is currently the default emoji list, nerd font icons, and a long list of math symbols.
-Other valid options for this setting are `emoji`, `math`, `none`.
+Other valid options for this setting are `emoji`, `math`, `nerd`, `none`.
 
 ```bash
-bemoji -D "math emoji"
+bemoji -D "math emoji nerd"
 ```
 
-The above command is equivalent as you can mention multiple sets you want downloaded.
+The above command is equivalent to `all` as you can mention multiple sets you want downloaded.
 
 If set to `none` and no files are in the emoji directory,
 bemoji will complain and not show anything.

bemoji

@@ -37,7 +37,7 @@ usage() {
     echo "   -p             Do not save picked emoji to recent history."
     echo "   -P <number>    Limit number of recent emoji to display."
     echo "   -D <choice>    Choose from default lists to download."
-    echo "                  Valid choices: all|none|emoji|math (multiple choices possible)."
+    echo "                  Valid choices: all|none|emoji|math|nerd (multiple choices possible)."
     echo "   -f <filepath>  Use a custom emoji database. Can be a url which will be retrieved."
     echo "   -v             Display current program version and directory configuration."
     echo "   -h             Show this help."
@@ -81,6 +81,7 @@ prepare_db() {
         elif echo "$BEMOJI_DOWNLOAD_LIST" | grep -q -e 'all'; then
             dl_default_emoji
             dl_math_symbols
+            dl_nerd_symbols
             return
         else
             if echo "$BEMOJI_DOWNLOAD_LIST" | grep -q -e 'emoji'; then
@@ -89,6 +90,9 @@ prepare_db() {
             if echo "$BEMOJI_DOWNLOAD_LIST" | grep -q -e 'math'; then
                 dl_math_symbols
             fi
+            if echo "$BEMOJI_DOWNLOAD_LIST" | grep -q -e 'nerd'; then
+                dl_nerd_symbols
+            fi
         fi
     fi
     if [ -n "$(find "$bm_db_location" -maxdepth 0 -type d -empty 2>/dev/null)" ]; then
@@ -107,6 +111,14 @@ dl_math_symbols() {
         grep -ve '^#' | cut -d';' -f3,7 | sed -e 's/;/ /' >"$bm_db_location/math.txt"
     printf "Downloaded math symbols set.\n"
 }
+dl_nerd_symbols() {
+    local nerd all
+    nerd=$(curl -sSL "https://raw.githubusercontent.com/ryanoasis/nerd-fonts/master/css/nerd-fonts-generated.css")
+    all+=$(printf "%s" "$nerd" | sed -ne '/\.nf-/p' -e '/\s*[^_]content:/p' | sed -e 'N;s/^\.nf-\(.*\):before.* content: \"\\\(.*\)\";/\\U\2 \1/')
+    echo -e "$all" > "$bm_db_location/nerdfont.txt"
+    printf "%s" "$all"
+    printf "Downloaded nerdfont symbols set.\n"
+}
 
 gather_emojis() {
     if [ -n "$BEMOJI_CUSTOM_LIST" ] && [ -f "$BEMOJI_CUSTOM_LIST" ]; then

test/bemoji_download.bats

@@ -38,3 +38,11 @@ emoji2 picked up"
     assert_equal "$outcome" "Σ GREEK CAPITAL LETTER SIGMA"
     unstub curl
 }
+@test "Runs nerdfont download on -D nerd option" {
+    stub curl \
+        "printf 'meangingless\nafiller lines\n.nf-md-pipe_wrench:before { \n content: \"\\\f1354\";\n }'"
+    run bemoji -D nerd 3>&-
+    outcome=$(cat "$BEMOJI_DB_LOCATION/nerdfont.txt")
+    assert_equal "$outcome" "󱍔 md-pipe_wrench"
+    unstub curl
+}