Add tools to preprocess the source files for AtariST PureC.

2 files changed, 221 insertions, 0 deletions

diff --git a/builds/atari/deflinejoiner.awk b/builds/atari/deflinejoiner.awk
new file mode 100644
index 00000000..c872a70d
--- /dev/null
+++ b/builds/atari/deflinejoiner.awk
@@ -0,0 +1,181 @@
+#!/usr/bin/env awk
+
+
+function shift( array, \
+                junk, elm0, l )
+{
+  elm0 = array[0]
+  for ( l = 0; l < asorti( array, junk ) - 1; l++ )
+    array[l] = array[l+1];
+  delete array[l]
+  return elm0
+}
+
+
+function init_cpp_src_line()
+{
+  logical_line = ""
+  delete break_pos 
+}
+
+
+function shift_valid_bp( array, \
+                         junk, elm )
+{
+  elm = -1
+
+  if ( 0 < asorti( array, junk ) )
+    do {
+      elm = shift( array )
+    } while ( 0 > elm );
+
+  return elm
+}
+
+
+function check_cpp_src_line_break_pos( \
+                                       i, junk )
+{
+  printf( "break_pos:" )
+  for ( i = 0; i < asorti( break_pos, junk ); i++ )
+    printf( " %d", break_pos[i] );
+  printf( "\n" )
+}
+
+
+function check_cpp_src_line()
+{
+  printf( "logical_line[%s]\n", logical_line )
+  check_cpp_src_line_break_pos()
+}
+
+
+function append_line( phys_line, \
+                      filt_line, bp_len )
+{
+  filt_line = phys_line
+  sub( /\\$/, " ", filt_line )
+  logical_line    = logical_line filt_line
+  bp_len = asorti( break_pos, junk )
+  break_pos[bp_len] = length( logical_line ) - 1
+}
+
+
+function print_line( \
+                     c0, c1, i, junk, part_str )
+{
+  c0 = 0
+
+  while( asorti( break_pos, junk ) > 1 )
+  {
+    if ( ( c1 = shift_valid_bp( break_pos ) ) < 1 )
+    {
+      part_str = substr( logical_line, c0 + 1 )
+      printf( "%s\n", part_str )
+      return
+    }
+
+    part_str = substr( logical_line, c0 + 1, c1 - c0 + 1 )
+    gsub( / $/, "\\", part_str )
+    printf( "%s\n", part_str )
+    c0 = c1 + 1
+  }
+
+  part_str = substr( logical_line, c0 + 1 )
+  printf( "%s\n", part_str )
+}
+
+
+function shrink_spaces( pos, \
+                        tail, removed_length, k )
+{
+  tail = substr( logical_line, pos )
+  sub( /^[ \t]+/, " ", tail )
+  removed_length = length( logical_line ) - pos - length( tail ) + 1
+  logical_line = substr( logical_line, 0, pos - 1 ) tail
+
+
+  for ( k = 0; k < asorti( break_pos, junk ); k++ )
+    if ( ( pos + removed_length ) <= break_pos[k] )
+      break_pos[k] = break_pos[k] - removed_length;
+    else if ( pos <= break_pos[k] )
+      break_pos[k] = -1;
+
+  return removed_length
+}
+
+
+function shrink_spaces_to_linebreak( pos, \
+                                     junk, part_str, removed_length, i )
+{
+  for ( i = 0; i < asorti( break_pos, junk ) && break_pos[i] < pos ; i++ )
+    ;
+ 
+  if ( break_pos[i] < 1 ) 
+    return;
+
+  part_str = substr( logical_line, pos, break_pos[i] - pos + 1 )
+  sub( /^[ \t]+/, " ", part_str )
+  removed_length = ( break_pos[i] - pos + 1 ) - length( part_str )
+
+  tail = substr( logical_line, pos + removed_length )
+  logical_line = substr( logical_line, 0, pos - 1 ) tail
+
+  for ( ; i < asorti( break_pos, junk ); i++ )
+    break_pos[i] -= removed_length;
+
+  return removed_length
+}
+
+
+function delete_linebreaks_in_2nd_token( \
+                                           tail, paren_depth, junk, i, j, k, l )
+{
+  if ( logical_line ~ /^[ \t]*#[ \t]*define[ \t]+[0-9A-Za-z_]+\(/ )
+  {
+    tail = logical_line
+    sub( /^[ \t]*#[ \t]*define[ \t]+[0-9A-Za-z_]+/, "", tail )
+
+    paren_depth = 0
+    l = 0
+    i = length( logical_line ) - length( tail ) + 1 # seek to the 1st op paren
+    j = i
+    do {
+      if ( substr( logical_line, j, 2 ) ~ /[ \t][ \t]/ )
+        l = shrink_spaces( j );
+      else if ( substr( logical_line, j, 1 ) == "(" )
+        paren_depth += 1;
+      else if ( substr( logical_line, j, 1 ) == ")" )
+        paren_depth -= 1;
+      j += 1
+    } while ( j < length( logical_line ) && paren_depth != 0 )
+
+    for ( k = 0; k < asorti( break_pos, junk ); k++ )
+      if ( i <= break_pos[k] && break_pos[k] < j )
+        break_pos[k] = -1;
+
+    if ( l > 0 )
+      shrink_spaces_to_linebreak( j );
+  }
+}
+
+
+BEGIN{
+  init_cpp_src_line()
+}
+{
+  append_line( $0 )
+  if ( $0 !~ /\\$/ )
+  {
+    delete_linebreaks_in_2nd_token()
+    print_line()
+    init_cpp_src_line()
+  }
+}
+END{
+  if ( 0 < length( logical_line ) )
+  {
+    delete_linebreaks_in_2nd_token()
+    print_line()
+  }
+}
diff --git a/builds/atari/gen-purec-patch.sh b/builds/atari/gen-purec-patch.sh
new file mode 100755
index 00000000..1ec050c1
--- /dev/null
+++ b/builds/atari/gen-purec-patch.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+TOP_DIR=.
+OBJ_DIR=.
+
+for x in "$@"
+do
+  case x"$x" in
+  x--srcdir=* | x--topdir=* )
+    TOP_DIR=`echo $x | sed 's/^--[a-z]*dir=//'`
+    ;;
+  x--builddir=* | x--objdir=* )
+    OBJ_DIR=`echo $x | sed 's/^--[a-z]*dir=//'`
+    ;;
+  esac
+done
+
+mkdir -p ${OBJ_DIR}/builds/atari/tmp/orig
+
+( cd ${TOP_DIR} && find . -name '*.[CHch]' -type f | fgrep -v builds/atari/tmp | cpio -o ) | \
+( cd ${OBJ_DIR}/builds/atari/tmp/orig && cpio -idum )
+cp ${TOP_DIR}/builds/atari/deflinejoiner.awk ${OBJ_DIR}/builds/atari/tmp
+
+pushd ${OBJ_DIR}/builds/atari/tmp
+
+  cp -pr orig purec
+  for f in `cd orig && find . -type f`
+  do
+    echo filter $f
+    env LANG=C awk -f deflinejoiner.awk < orig/$f > purec/$f
+  done
+
+  echo '#define FT2_BUILD_LIBRARY'  >  purec/include/ft2build.h
+  echo '#include "ATARI.H"'         >> purec/include/ft2build.h
+  env LANG=C awk -f deflinejoiner.awk < orig/include/ft2build.h >> purec/include/ft2build.h
+
+  env LANG=C diff -ur orig purec > ../purec.diff
+
+popd
+rm -rf ${OBJ_DIR}/builds/atari/tmp