mirror of
https://github.com/sheumann/hush.git
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90 lines
2.4 KiB
Bash
Executable File
90 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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# Note: was using sed OPTS CMD -- FILES
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# but users complain that many sed implementations
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# are misinterpreting --.
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test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
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# cd to objtree
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cd -- "$2" || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
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# In separate objtree build, include/ might not exist yet
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mkdir include 2>/dev/null
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srctree="$1"
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status() { printf ' %-8s%s\n' "$1" "$2"; }
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gen() { status "GEN" "$@"; }
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chk() { status "CHK" "$@"; }
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generate()
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{
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# NB: data to be inserted at INSERT line is coming on stdin
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local src="$1" dst="$2" header="$3"
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#chk "${dst}"
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{
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# Need to use printf: different shells have inconsistent
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# rules re handling of "\n" in echo params.
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printf "%s\n" "${header}"
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# print everything up to INSERT line
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sed -n '/^INSERT$/ q; p' "${src}"
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# copy stdin to stdout
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cat
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# print everything after INSERT line
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sed -n '/^INSERT$/ { :l; n; p; bl }' "${src}"
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} >"${dst}.tmp"
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if ! cmp -s "${dst}" "${dst}.tmp"; then
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gen "${dst}"
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mv "${dst}.tmp" "${dst}"
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else
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rm -f "${dst}.tmp"
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fi
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}
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# (Re)generate include/applets.h
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sed -n 's@^//applet:@@p' "$srctree"/*/*.c "$srctree"/*/*/*.c \
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| generate \
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"$srctree/include/applets.src.h" \
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"include/applets.h" \
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"/* DO NOT EDIT. This file is generated from applets.src.h */"
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# (Re)generate include/usage.h
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# We add line continuation backslash after each line,
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# and insert empty line before each line which doesn't start
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# with space or tab
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sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\@p' "$srctree"/*/*.c "$srctree"/*/*/*.c \
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| generate \
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"$srctree/include/usage.src.h" \
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"include/usage.h" \
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"/* DO NOT EDIT. This file is generated from usage.src.h */"
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# (Re)generate */Kbuild and */Config.in
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{ cd -- "$srctree" && find . -type d; } | while read -r d; do
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d="${d#./}"
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src="$srctree/$d/Kbuild.src"
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dst="$d/Kbuild"
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if test -f "$src"; then
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mkdir -p -- "$d" 2>/dev/null
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sed -n 's@^//kbuild:@@p' "$srctree/$d"/*.c \
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| generate \
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"${src}" "${dst}" \
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"# DO NOT EDIT. This file is generated from Kbuild.src"
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fi
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src="$srctree/$d/Config.src"
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dst="$d/Config.in"
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if test -f "$src"; then
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mkdir -p -- "$d" 2>/dev/null
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sed -n 's@^//config:@@p' "$srctree/$d"/*.c \
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| generate \
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"${src}" "${dst}" \
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"# DO NOT EDIT. This file is generated from Config.src"
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fi
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done
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# Last read failed. This is normal. Don't exit with its error code:
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exit 0
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