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#!/bin/sh
#
# Credit:
# * ArchWiki - cgit
# https://wiki.archlinux.org/index.php/Cgit
#
# Aaron LI
# 2017-06-19
#
#
# This script can be used to implement syntax highlighting in the cgit
# 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:
#
# Style definition file generated by highlight 3.13, http://www.andre-simon.de/
#
# body.hl { background-color:#e0eaee; }
# pre.hl { color:#000000; background-color:#e0eaee; font-size:10pt; font-family:'Courier New',monospace;}
# .hl.num { color:#b07e00; }
# .hl.esc { color:#ff00ff; }
# .hl.str { color:#bf0303; }
# .hl.pps { color:#818100; }
# .hl.slc { color:#838183; font-style:italic; }
# .hl.com { color:#838183; font-style:italic; }
# .hl.ppc { color:#008200; }
# .hl.opt { color:#000000; }
# .hl.ipl { color:#0057ae; }
# .hl.lin { color:#555555; }
# .hl.kwa { color:#000000; font-weight:bold; }
# .hl.kwb { color:#0057ae; }
# .hl.kwc { color:#000000; font-weight:bold; }
# .hl.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##*.}"
[ "${BASENAME}" = "${EXTENSION}" ] && EXTENSION=txt
[ -z "${EXTENSION}" ] && EXTENSION=txt
# map Makefile and Makefile.* to .mk
[ "${BASENAME%%.*}" = "Makefile" ] && EXTENSION=mk
# WARNING:
# On DragonFly using Nginx+fcgiwrap, for unknown reason, the `PATH` is set
# to only `/sbin:/bin:/usr/sbin:/usr/bin`, therefore, the `highlight` cannot
# be found by default.
# Explicitly set the `PATH`.
export PATH="/bin:/usr/bin:/usr/games:/usr/local/bin"
# For version 3
#exec highlight --force -f -I -O xhtml -S "$EXTENSION" 2>/dev/null
# Use `--inline-css` to be more colorful without editing cgit's CSS
exec highlight --force -f -I --inline-css -O xhtml -S "$EXTENSION" 2>/dev/null
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