Merge branch 'fh/mimetypes'

[ps-cgit] / filters / syntax-highlighting.sh

diff --git a/filters/syntax-highlighting.sh b/filters/syntax-highlighting.sh
index 999ad0ce3d07f00a6e6d0cc8999502dd9a5e96c4..5fcc9c9219137809affece9872ee544b9085b507 100755 (executable)
--- a/filters/syntax-highlighting.sh
+++ b/filters/syntax-highlighting.sh
@@ -3,6 +3,10 @@
 # tree-view by refering to this file with the source-filter or repo.source-
 # filter options in cgitrc.
 #
+# This script requires a shell supporting the ${var##pattern} syntax.
+# It is supported by at least dash and bash, however busybox environments
+# might have to use an external call to sed instead.
+#
 # Note: the highlight command (http://www.andre-simon.de/) uses css for syntax
 # highlighting, so you'll probably want something like the following included
 # in your css file (generated by highlight 2.4.8 and adapted for cgit):
@@ -19,21 +23,51 @@
 # table.blob .kwb  { color:#830000; }
 # table.blob .kwc  { color:#000000; font-weight:bold; }
 # table.blob .kwd  { color:#010181; }
+#
+# The following environment variables can be used to retrieve the configuration
+# of the repository for which this script is called:
+# CGIT_REPO_URL        ( = repo.url       setting )
+# CGIT_REPO_NAME       ( = repo.name      setting )
+# CGIT_REPO_PATH       ( = repo.path      setting )
+# CGIT_REPO_OWNER      ( = repo.owner     setting )
+# CGIT_REPO_DEFBRANCH  ( = repo.defbranch setting )
+# CGIT_REPO_SECTION    ( = section        setting )
+# CGIT_REPO_CLONE_URL  ( = repo.clone-url setting )
+#
+
+# store filename and extension in local vars
+BASENAME="$1"
+EXTENSION="${BASENAME##*.}"
 
-case "$1" in
-       *.c)
-               highlight -f -I -X -S c
-               ;;
-       *.h)
-               highlight -f -I -X -S c
-               ;;
-       *.sh)
-               highlight -f -I -X -S sh
-               ;;
-       *.css)
-               highlight -f -I -X -S css
-               ;;
-       *)
-               highlight -f -I -X -S txt
-               ;;
-esac
+# map Makefile and Makefile.* to .mk
+[ "${BASENAME%%.*}" == "Makefile" ] && EXTENSION=mk
+
+# highlight versions 2 and 3 have different commandline options. Specifically,
+# the -X option that is used for version 2 is replaced by the -O xhtml option
+# for version 3.
+#
+# Version 2 can be found (for example) on EPEL 5, while version 3 can be
+# found (for example) on EPEL 6.
+#
+# This is for version 2
+exec highlight --force -f -I -X -S $EXTENSION 2>/dev/null
+
+# This is for version 3
+#
+# On CentOS 6.2 (using highlight from EPEL), when highlight doesn't know about
+# an EXTENSION, it outputs a lua error and _no_ text, even when the --force
+# option is used.
+#
+# Also see the bug reports at:
+# http://sourceforge.net/tracker/?func=detail&aid=3490017&group_id=215618&atid=1034391
+# https://bugzilla.redhat.com/show_bug.cgi?id=795567
+#
+# This workaround can be removed when the bug is fixed upstream and the new
+# version is packaged in most distributions.
+#
+# The workaround is to set the extension to 'txt' (plain text) when highlight
+# exits with an error (doesn't know the format).
+#
+#echo "test" | highlight -f -I -O xhtml -S $EXTENSION &>/dev/null
+#[ ${?} -ne 0 ] && EXTENSION="txt"
+#exec highlight --force -f -I -O xhtml -S $EXTENSION 2>/dev/null