bfd/sedscript-p

   1 # SED script for preprocessing embedded headers from source
   2 # (S. Chamberlain markup)
   3 # middle pass; most of the work is done here.
   4 #
   5 # First, get rid of /*proto* markers; they've done their job in the first pass.
   6 # (They remain comment-introducers)
   7 /^\/\*proto\*/s/^\/\*proto\*/\/*/
   8 /^\/\*proto-internal\*/s/^\/\*proto-internal\*/\/*/
   9 #
  10 # *-*/ is an alternative (older) comment-block end.  Remap for uniformity:
  11 s/^\*-\*\//\*\//
  12 #
  13 # {* and *} are standins for comment markers (originally embedded in .c
  14 # comments)---turn into real comment markers:
  15 s/{\*/\/\*/
  16 s/\*}/\*\//
  17 #
  18 # '*+++' and '*---' span a block of text that includes both header lines
  19 # (marked by leading '$') and explanatory text (to be comments).
  20 # No need to start comment at "*+++", or end it at "*---", since we're
  21 # already in a *proto* comment block.  Just delete.
  22 /\*\+\+\+/d
  23 /\*---/d
  24 #
  25 # Any line beginning with '$' is made a line of code in the header;
  26 #  stuff in between is comments, so *precede* each '$' line with
  27 #  END-comment, *follow* each '$' line with START-comment; third pass later
  28 #  eliminates empty comment blocks.
  29 /^\$/i\
  30 */
  31 /^\$/a\
  32 /*
  33 #
  34 # Now delete the '$' markers themselves:
  35 /^\$/s/\$//
  36 #
  37 # *+ and *- delimit larger blocks of code, treated the same as '$' lines
  38 /^\*\+$/c\
  39 */
  40 /^\*-$/c\
  41 /*
  42 #
  43 # '*;' introduces code which may have a single line or multiple lines;
  44 # it extends until the next semicolon (which is also printed).
  45 #
  46 # One-line case: (do this first; else second line address for multi-line case
  47 # will include random text til we happen to end a line in a proto comment with
  48 # a semicolon)
  49 /^\*;.*;$/{
  50 s/^\*;/*\/\
  51 /
  52 s/;$/;\
  53 \/*\
  54 /
  55 }
  56 # Multi-line case:
  57 /^\*;/,/.*;$/{
  58 s/^\*;/*\/\
  59 /
  60 s/;$/;\
  61 \/*\
  62 /
  63 }