#!/bin/sh -e
## vdrdevel patch (Version 0.1.0) by Thomas Günther <tom@toms-cafe.de>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Substitute vdr -> vdrdevel and vice versa:
## DP:   1. in includes of all source files (recursively)
## DP:   2. in contents of all files in debian directory (recursively)
## DP:      except control, changelog, rules, watch, copyright
## DP:      and files in directories patches and patched
## DP:   3. in names of all files in debian directory (recursively)
## DP:      except files in directories patches and patched
## DP: Exceptions:
## DP:   libvdr-, svdrpsend, svdrphosts, vdrrip, vdrcd, dvdrecord, vdradmin,
## DP:   vdr-xxv
## DP: Preserve mode, ownership and timestamps.

if [ "$*" != "-patch" -a "$*" != "-unpatch" ]; then
    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
    exit 1
fi

# Check if this is a vdrdevel package
/usr/bin/dh_listpackages | /bin/grep -q "^vdrdevel-" || exit 0

# Create tempfile
tmp_file=$(/bin/mktemp)

# Define sed commands
inc_subst="s.\(#[[:space:]]*include[[:space:]]*\)<vdr.\1<vdrdevel.; \
           s.\(#[[:space:]]*include[[:space:]]*\)<vdrdeveldevel.\1<vdr.;"
deb_subst="s.vdr.vdrdevel.g; \
           s.vdrdeveldevel.vdr.g; \
           s.libvdrdevel-.libvdr-.g; \
           s.svdrdevelpsend.svdrpsend.g; \
           s.svdrdevelphosts.svdrphosts.g; \
           s.vdrdevelrip.vdrrip.g; \
           s.vdrdevelcd.vdrcd.g; \
           s.dvdrdevelecord.dvdrecord.g; \
           s.vdrdeveladmin.vdradmin.g; \
           s.vdrdevel-xxv.vdr-xxv.g;"

# Includes of all source files
files=$(/usr/bin/find ./ -type f -iregex ".*\.\(c\|h\|cc\|hh\|cpp\|hpp\)")
if [ "$files" ]; then
    for f in $files; do
        /bin/chmod +w "$f"
        /bin/cp -a -f "$f" "$tmp_file"
        /bin/sed -e "$inc_subst" "$f" >"$tmp_file"
        if ! /usr/bin/cmp -s "$f" "$tmp_file"; then
            /usr/bin/touch -r "$f" "$tmp_file"
            /bin/mv -f "$tmp_file" "$f"
            echo "vdr includes substituted in $f"
        fi
    done
fi

# Files in debian directory (recursively)
files=$(/usr/bin/find debian/ -type f -not -regex "debian/patche[sd]/.*" \
        -not -regex "debian/\(control\|changelog\|rules\|watch\|copyright\)")
if [ "$files" ]; then
    for f in $files; do
        /bin/chmod +w "$f"
        /bin/cp -a -f "$f" "$tmp_file"
        /bin/sed -e "$deb_subst" "$f" >"$tmp_file"
        if ! /usr/bin/cmp -s "$f" "$tmp_file"; then
            /usr/bin/touch -r "$f" "$tmp_file"
            /bin/mv -f "$tmp_file" "$f"
            echo "vdr pathes substituted in $f"
        fi
    done
fi

# Rename files in debian directory (recursively)
files=$(/usr/bin/find debian/ -type f \
        -name "*vdr*" -not -regex "debian/patche[sd]/.*")
if [ "$files" ]; then
    for f in $files; do
        n=$(echo "$f" | /bin/sed -e "$deb_subst")
        if [ "$f" != "$n" ]; then
            /bin/mv "$f" "$n"
            echo "renamed $f to $n"
        fi
    done
fi

# Remove tempfile
/bin/rm -f "$tmp_file"

exit 0