update script

generate_raster_images.zsh

@@ -1,12 +1,12 @@
 #!/usr/bin/env zsh
-# Generates trimmed raster images images from SVGs in svg/.
+# Generates trimmed raster images from SVGs in svg/.
 # Argument 1 is the file extension, default is webp.
 # Argument 2 is the size, default is to use the SVG size.
 
 setopt LOCAL_OPTIONS ERR_RETURN NO_UNSET PIPE_FAIL
 
-if ! type convert &> /dev/null; then
-    print -u2 "'convert' from imagemagick not found"
+if ! type magick &> /dev/null; then
+    print -Pu2 "%F{1}'magick' from imagemagick not found%f"
     return 1
 fi
 
@@ -15,15 +15,59 @@ local ext=webp
 local size=-1
 [[ ${ARGC} > 1 ]] && size=${2}
 
-print "generating ${ext} images in ${PWD}/${ext} …"
-mkdir -p ${ext}
-for svg in svg/*.svg; do
+function gri_convert() {
+    local svg=${1}
     local target=${svg##*/}
     target=${ext}/${target%.*}.${ext}
-    convert -verbose \
-            -background none \
-            -trim \
-            -resize ${size} \
-            -quality 100 \
-            ${svg} ${target}
+
+    magick -verbose -background none -quality 100 \
+           ${svg} -trim -resize ${size} ${target}
+
+    if [[ ${ext} == "png" ]] && type pngcrush &> /dev/null; then
+        pngcrush -ow ${target}
+    fi
+}
+
+print -P "%F{12}generating ${ext} images in ${PWD}/${ext} …%f"
+mkdir -p ${ext}
+for svg in svg/*.svg; do
+    gri_convert ${svg}
 done
+
+if ([[ ${ext} == "webp" ]] && type webpmux &> /dev/null) \
+       || ([[ ${ext} == "png" ]] && type apngasm &> /dev/null); then
+    print -P "%F{12}generating animated emoji …%f"
+    for cfg in svg/animated/*cfg; do
+        local emojiname=${cfg##*/}
+        emojiname=${emojiname%.*}
+
+        local -a webpmux_args=()
+        local -a apngasm_args=()
+        while read line; do
+            local -a framecfg=(${(@s: :)line})
+
+            [[ ${framecfg[1][1]} == "#" ]] && continue
+            if [[ ${framecfg[1]} == "loop" ]]; then
+                webpmux_args+=(-loop ${framecfg[2]})
+                apngasm_args+=(--loops ${framecfg[2]})
+                break
+            fi
+            webpmux_args+=(-frame ${ext}/${framecfg[1]}.${ext}
+                           +${framecfg[2]}+0+0+0-b)
+            apngasm_args+=(${ext}/${framecfg[1]}.${ext} ${framecfg[2]})
+
+            gri_convert svg/animated/${framecfg[1]}.svg
+        done < ${cfg}
+
+        if [[ ${ext} == "webp" ]]; then
+            webpmux -o ${ext}/a${emojiname}.${ext} ${webpmux_args}
+        elif [[ ${ext} == "png" ]]; then
+            apngasm --force --output ${ext}/a${emojiname}.${ext} ${apngasm_args}
+        fi
+        rm -v ${ext}/${emojiname}_*.${ext}
+    done
+else
+    print -P "%F{1}Not generating animated emoji." \
+          "Animated emojis are only generated for webp (with webpmux)" \
+          "and png (with apngasm)%f"
+fi