thirdparty/freetype-2.3.12/builds/atari/deflinejoiner.awk

   1 #!/usr/bin/env awk
   2
   3
   4 function shift( array, \
   5                 junk, elm0, l )
   6 {
   7   elm0 = array[0]
   8   for ( l = 0; l < asorti( array, junk ) - 1; l++ )
   9     array[l] = array[l+1];
  10   delete array[l]
  11   return elm0
  12 }
  13
  14
  15 function init_cpp_src_line()
  16 {
  17   logical_line = ""
  18   delete break_pos
  19 }
  20
  21
  22 function shift_valid_bp( array, \
  23                          junk, elm )
  24 {
  25   elm = -1
  26
  27   if ( 0 < asorti( array, junk ) )
  28     do {
  29       elm = shift( array )
  30     } while ( 0 > elm );
  31
  32   return elm
  33 }
  34
  35
  36 function check_cpp_src_line_break_pos( \
  37                                        i, junk )
  38 {
  39   printf( "break_pos:" )
  40   for ( i = 0; i < asorti( break_pos, junk ); i++ )
  41     printf( " %d", break_pos[i] );
  42   printf( "\n" )
  43 }
  44
  45
  46 function check_cpp_src_line()
  47 {
  48   printf( "logical_line[%s]\n", logical_line )
  49   check_cpp_src_line_break_pos()
  50 }
  51
  52
  53 function append_line( phys_line, \
  54                       filt_line, bp_len )
  55 {
  56   filt_line = phys_line
  57   sub( /\\$/, " ", filt_line )
  58   logical_line    = logical_line filt_line
  59   bp_len = asorti( break_pos, junk )
  60   break_pos[bp_len] = length( logical_line ) - 1
  61 }
  62
  63
  64 function print_line( \
  65                      c0, c1, i, junk, part_str )
  66 {
  67   c0 = 0
  68
  69   while( asorti( break_pos, junk ) > 1 )
  70   {
  71     if ( ( c1 = shift_valid_bp( break_pos ) ) < 1 )
  72     {
  73       part_str = substr( logical_line, c0 + 1 )
  74       printf( "%s\n", part_str )
  75       return
  76     }
  77
  78     part_str = substr( logical_line, c0 + 1, c1 - c0 + 1 )
  79     gsub( / $/, "\\", part_str )
  80     printf( "%s\n", part_str )
  81     c0 = c1 + 1
  82   }
  83
  84   part_str = substr( logical_line, c0 + 1 )
  85   printf( "%s\n", part_str )
  86 }
  87
  88
  89 function shrink_spaces( pos, \
  90                         tail, removed_length, k )
  91 {
  92   tail = substr( logical_line, pos )
  93   sub( /^[ \t]+/, " ", tail )
  94   removed_length = length( logical_line ) - pos - length( tail ) + 1
  95   logical_line = substr( logical_line, 0, pos - 1 ) tail
  96
  97
  98   for ( k = 0; k < asorti( break_pos, junk ); k++ )
  99     if ( ( pos + removed_length ) <= break_pos[k] )
 100       break_pos[k] = break_pos[k] - removed_length;
 101     else if ( pos <= break_pos[k] )
 102       break_pos[k] = -1;
 103
 104   return removed_length
 105 }
 106
 107
 108 function shrink_spaces_to_linebreak( pos, \
 109                                      junk, part_str, removed_length, i )
 110 {
 111   for ( i = 0; i < asorti( break_pos, junk ) && break_pos[i] < pos ; i++ )
 112     ;
 113
 114   if ( break_pos[i] < 1 )
 115     return;
 116
 117   part_str = substr( logical_line, pos, break_pos[i] - pos + 1 )
 118   sub( /^[ \t]+/, " ", part_str )
 119   removed_length = ( break_pos[i] - pos + 1 ) - length( part_str )
 120
 121   tail = substr( logical_line, pos + removed_length )
 122   logical_line = substr( logical_line, 0, pos - 1 ) tail
 123
 124   for ( ; i < asorti( break_pos, junk ); i++ )
 125     break_pos[i] -= removed_length;
 126
 127   return removed_length
 128 }
 129
 130
 131 function delete_linebreaks_in_2nd_token( \
 132                                            tail, paren_depth, junk, i, j, k, l )
 133 {
 134   if ( logical_line ~ /^[ \t]*#[ \t]*define[ \t]+[0-9A-Za-z_]+\(/ )
 135   {
 136     tail = logical_line
 137     sub( /^[ \t]*#[ \t]*define[ \t]+[0-9A-Za-z_]+/, "", tail )
 138
 139     paren_depth = 0
 140     l = 0
 141     i = length( logical_line ) - length( tail ) + 1 # seek to the 1st op paren
 142     j = i
 143     do {
 144       if ( substr( logical_line, j, 2 ) ~ /[ \t][ \t]/ )
 145         l = shrink_spaces( j );
 146       else if ( substr( logical_line, j, 1 ) == "(" )
 147         paren_depth += 1;
 148       else if ( substr( logical_line, j, 1 ) == ")" )
 149         paren_depth -= 1;
 150       j += 1
 151     } while ( j < length( logical_line ) && paren_depth != 0 )
 152
 153     for ( k = 0; k < asorti( break_pos, junk ); k++ )
 154       if ( i <= break_pos[k] && break_pos[k] < j )
 155         break_pos[k] = -1;
 156
 157     if ( l > 0 )
 158       shrink_spaces_to_linebreak( j );
 159   }
 160 }
 161
 162
 163 BEGIN{
 164   init_cpp_src_line()
 165 }
 166 {
 167   append_line( $0 )
 168   if ( $0 !~ /\\$/ )
 169   {
 170     delete_linebreaks_in_2nd_token()
 171     print_line()
 172     init_cpp_src_line()
 173   }
 174 }
 175 END{
 176   if ( 0 < length( logical_line ) )
 177   {
 178     delete_linebreaks_in_2nd_token()
 179     print_line()
 180   }
 181 }