Restructure cppawk installation.

cppawk now expects to be installed in some directory (typically "bin"),
such that the include files are in a "share/cppawk/include" directory
where "share" is a sibling of "bin".

The git repository is restructured to match this shape; cppawk is
moved into "bin", and the include files into "share/cppawk/include".

1 files changed, 224 insertions, 0 deletions

diff --git a/bin/cppawk b/bin/cppawk
new file mode 100755
index 0000000..e5c95dc
--- /dev/null
+++ b/bin/cppawk
@@ -0,0 +1,224 @@
+#!/bin/sh
+
+# cppawk: C preprocessor wrapper around awk
+# Copyright 2022 Kaz Kylheku <kaz@kylheku.com>
+#
+# BSD-2 License
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# site configuration
+prepro=cpp
+incopt=-iquote # GNU extension: must be changed to -I for traditional cpp
+dumpopt=-dM # GNU cpp option to dump macros
+stdopt=-std=c99 # GNU cpp option for standard conformance
+awk=gawk
+prepro_opts="-D__gawk__=1 -D__cppawk_ver=20220419 $stdopt"
+
+# globals
+bash=${BASH_VERSION+y}
+# if this isn't bash, and there is a /bin/bash, let's re-execute ourselves
+# with Bash, so we can use process substitution instead of temp files.
+if ! [ $bash ] && [ -x /bin/bash ] ; then
+   exec /bin/bash "$0" "$@"
+fi
+awk_file=
+awk_opts=
+tmp_file=
+prepro_only=
+
+selfdir="$(dirname "$0")"
+
+# functions
+
+# convert argument into quoted shell syntax
+quote()
+{
+  case $1 in
+  *"'"* )
+    case $1 in
+    *[\"\$\\]* )
+      printf "'%s'" "$(printf "%s" "$1" | sed -e "s/'/'\\\\''/g")"
+      ;;
+    * )
+      printf '"%s"' "$1"
+      ;;
+    esac
+    ;;
+  * )
+    printf "'%s'" "$1"
+    ;;
+  esac
+}
+
+die()
+{
+   fmt="$0: $1\n" ; shift
+   printf "$fmt" "$@"
+   exit 1
+}
+
+delhashbang_setline()
+{
+  sed -e "1s/^#!.*/#/" -e "1i#line 1 \"$1\"" "$1"
+}
+
+delhashbang()
+{
+  sed -e "1s/^#!.*/#/"
+}
+
+# Eliminate tracer lines in cpp output which continue a previous line, and
+# merge the continued lines into one.  Awk needs this because spurious newlines
+# break its syntax.
+collapse()
+{
+  awk '
+    $1 == "#" { if ($2 != curline || $3 != curfile)
+                { print
+                  if (have_line)
+                  { printf("%s\n", line);
+                    line = ""
+                    have_line = 0 } }
+                startline = $2
+                curline = startline - 1
+                curfile = $3;
+                next }
+    1         { if (++curline > startline)
+                { if (have_line)
+                  { printf("%s\n", line)
+                    line = "" } }
+                else
+                { sub(/^[ \t]+/, "") }
+                line = line $0
+                have_line = 1 }
+    END       { if (have_line)
+                printf("%s\n", line); }'
+}
+
+prepro_opts="$prepro_opts -I$selfdir/../share/cppawk/include"
+
+while [ $# -gt 0 ] ; do
+  case $1 in
+  -M?* )
+    die "-M family of cpp options not supported"
+    ;;
+  --prepro-only )
+    prepro_only=y
+    ;;
+  --prepro=* )
+    prepro=${1#*=}
+    ;;
+  --awk=* )
+    awk=${1#*=}
+    case $awk in
+      gawk | mawk | */gawk | */mawk )
+        prepro_opts="$prepro_opts -U__gawk__ -D__$(basename "$awk")__=1"
+        ;;
+      egawk | */egawk )
+        prepro_opts="$prepro_opts -D__egawk__=1"
+        ;;
+    esac
+    ;;
+  --nobash )
+    bash=
+    ;;
+  --dump-macros )
+    prepro_opts="$prepro_opts $dumpopt"
+    prepro_only=y
+    ;;
+  -U* | -D* | -I* | -iquote* )
+    prepro_opts="$prepro_opts $(quote "$1")"
+    ;;
+  -f )
+    [ $# -gt 1 ] || die "-f requires argument"
+    [ -z "$awk_file" ] || die "-f can be only given once"
+    awk_file=$2
+    shift
+    ;;
+  -F | -v | -E | -i | -l | -L )
+    [ $# -gt 1 ] || die "%s requires argument" $1
+    awk_opts="$awk_opts $1 $(quote "$2")"
+    shift
+    ;;
+  -- )
+    break
+    ;;
+  -M | --bignum )
+    awk_opts="$awk_opts $1"
+    prepro_opts="$prepro_opts -D__bignum__=1"
+    ;;
+  -P | --posix )
+    awk_opts="$awk_opts $1"
+    prepro_opts="$prepro_opts -D__posix__=1"
+    ;;
+  -* )
+    awk_opts="$awk_opts $(quote "$1")"
+    ;;
+  * )
+    break
+    ;;
+  esac
+  shift
+done
+
+awk="command $(quote "$awk")"
+prepro="command $(quote "$prepro")"
+
+if [ -n "$awk_file" ] ; then
+  awk_file_dir=$(dirname "$awk_file")
+  if [ $prepro_only ] ; then
+    delhashbang_setline "$awk_file" \
+    | eval "$prepro $incopt\"$awk_file_dir\" $prepro_opts - | collapse"
+  elif [ $bash ] ; then
+    prep='delhashbang_setline "$awk_file" \
+         | eval "$prepro $incopt\"$awk_file_dir\" $prepro_opts - | collapse"'
+    eval "$awk $awk_opts -f <($prep) -- \"\$@\""
+  else
+    trap 'rm -f $tmp_file' EXIT INT TERM
+    tmp_file=$(mktemp)
+    delhashbang_setline "$awk_file" \
+    | eval "$prepro $incopt\"$awk_file_dir\" $prepro_opts - | collapse" \
+    > $tmp_file
+    eval "$awk $awk_opts -f $tmp_file -- \"\$@\""
+  fi
+elif [ $# -gt 0 ] ; then
+  if [ $prepro_only ] ; then
+    printf "%s" "$1" | delhashbang \
+    | eval "$prepro $incopt"$(pwd)" $prepro_opts - | collapse"
+  elif [ $bash ] ; then
+    code=$1; shift
+    prep='printf "%s" "$code" | delhashbang \
+          | eval "$prepro $incopt"$(pwd)" $prepro_opts - | collapse"'
+    eval "$awk $awk_opts -f <($prep) -- \"\$@\""
+  else
+    trap 'rm -f $tmp_file' EXIT INT TERM
+    tmp_file=$(mktemp)
+    printf "%s" "$1" | delhashbang \
+    | eval "$prepro $incopt"$(pwd)" $prepro_opts - | collapse" > $tmp_file
+    shift
+    eval "$awk $awk_opts -f $tmp_file -- \"\$@\""
+  fi
+else
+  die "awk code must be specified"
+fi