bash_include: 加入用來自動產生 fontconfig alias 設定檔的小工具bash_include-20150403

1 files changed, 110 insertions, 0 deletions

diff --git a/bash_include b/bash_include
index d47d505..4ae4d12 100644
--- a/bash_include
+++ b/bash_include
@@ -687,6 +687,112 @@ EOF
 }
 
 
+# Group: Fontconfig Tools ####################################################
+
+function fontconfig_get_supported_lang ()
+{
+	local font_file
+	local fc_query_cmd="fc-query"
+
+	fc-list "$1" | cat -n
+	read -e -p "  $1 >>> " choice
+	font_file="`fc-list "$1" | sed -n ${choice}p | cut -d ':' -f 1`"
+	echo "  $1 >>> $font_file"
+
+	if [ "`fc-query "$font_file" | safe_grep '^	lang: ' | wc -l`" -gt 1 ]; then
+		echo ''
+		echo "  $font_file contains more than one font ..."
+		fc-query "$font_file" | safe_grep '^	fullname: ' | (
+			declare -i i=0
+			while read oneline; do
+				printf "%6d %s\n" "$i" "$oneline"
+				i=i+1
+			done )
+		read -e -p "  Index of $1 >>> " choice
+		fc_query_cmd="fc-query -i $choice"
+	fi
+
+	fontconfig_supported_lang="`$fc_query_cmd "$font_file" | safe_grep '^	lang: ' | cut -d : -f 2 | sed 's/ //'`"
+}
+
+function fontconfig_set_alias ()
+{
+	local alias_name="$1"
+	local main_font="$2"
+	local fallback_font="$3"
+	local use_match
+	local choice
+
+	fontconfig_get_supported_lang "$main_font"
+	local main_font_lang="$fontconfig_supported_lang"
+
+	echo ''
+	echo ''
+
+	fontconfig_get_supported_lang "$fallback_font"
+	local fallback_font_lang="$fontconfig_supported_lang"
+
+	echo ''
+	echo ''
+
+	read -p 'Use <match> or <alias> ? ' choice
+	case "$choice" in
+		*M*|*m*)
+			use_match="true"
+			;;
+		*)
+			use_match="false"
+			;;
+	esac
+
+	echo ''
+	echo ''
+
+	if [ "$use_match" = "true" ]; then
+		echo '<match>'
+		echo '  <test name="family"><string>'"$alias_name"'</string></test>'
+		echo '  <edit name="family" mode="prepend" binding="strong">'
+		echo '    <string>'"$main_font"'</string>'
+		echo '  </edit>'
+		echo '</match>'
+	else
+		echo '<alias>'
+		echo '  <family>'"$alias_name"'</family>'
+		echo '  <prefer><family>'"$main_font"'</family></prefer>'
+		echo '</alias>'
+	fi
+
+	echo ''
+
+	diff -u \
+		<(echo "$main_font_lang" | tr '|' '\n' | sort) \
+		<(echo "$fallback_font_lang" | tr '|' '\n' | sort) | \
+		sed -e '/@@/d' -e '/---/d' -e '/+++/d' | \
+		safe_grep  '\+' | sed 's/+//' | (
+
+		while read lang; do
+			if [ "$use_match" = "true" ]; then
+				echo '<match>'
+				echo '  <test name="family"><string>'"$alias_name"'</string></test>'
+				echo '  <test name="lang" compare="contains"><string>'"$lang"'</string></test>'
+				echo '  <edit name="family" mode="prepend" binding="strong">'
+				echo '    <string>'"$fallback_font"'</string>'
+				echo '  </edit>'
+				echo '</match>'
+			else
+				echo '<alias>'
+				echo '  <family>'"$alias_name"'</family>'
+				echo '  <test name="lang" compare="contains"><string>'"$lang"'</string></test>'
+				echo '  <prefer><family>'"$fallback_font"'</family></prefer>'
+				echo '</alias>'
+			fi
+		done
+	)
+
+	unset fontconfig_supported_lang
+}
+
+
 # Group: New PATH Editor #####################################################
 
 function newpath_init ()
@@ -1897,6 +2003,10 @@ function help_function ()
  x  fetch_remote_file local_file_name remote_url
  x  fetch_and_merge local_file_name remote_url
 
+ <<< Group: Fontconfig Tools >>>
+    fontconfig_set_alias name main_font fallback_font
+ x  fontconfig_get_supported_lang font_name
+
  <<< Group: New PATH Editor >>>
     path_editor [variable]
     ldpath_editor