Implement, but leave disabled, MSDOS functionality

From-SVN: r35479

gcc/ChangeLog

+2000-08-04  Bruce Korb  <bkorb@gnu.org>
+
+	* fixinc/:  Verified that the MSDOS patch does not break
+	the UNIX functionality and applied the next three patches
+	from July:
+
+2000-07-28  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* fixinc/fixfixes.c (main) [__MSDOS__]: Avoid overwriting the
+	output file with the temporary one by appending ".X" to generate
+	the temporary fuile's name.  If the output file already has an
+	extension, replace it with ".X".
+
+	* fixinc/fixincl.c (fix_with_system) [__MSDOS__]: Use $ORIGDIR,
+	not $DESTDIR, to find applyfix.  Use sprintf instead of snprintf;
+	reallocate the command buffer while copying the command-line
+	argument.  Redirect the output directly to the temporary file,
+	instead of going through another temporary file.
+	(process): Close the temporary file before unlinking it.
+	(machine_matches) [__MSDOS__]: If the machine doesn't match, set
+	the FD_SKIP_TEST flag.  Pay attention to the FD_MACH_IFNOT flag.
+	(run_compiles): Pass p_fixd argument to machine_matches, as it
+	expects.
+
+	* fixinc/fixincl.sh: Export ORIGDIR.  If $DJDIR is set in the
+	environment, assume there are no symlinks in the include
+	directory.  When cleaning up the DONE files, look for them
+	case-insensitively.  Don't try to remove symlinks if they aren't
+	there.
+
+	* fixinc/fixlib.c (make_raw_shell_str): Accept new argument smax;
+	all callers changed.  Declare pz "const char *", to avoid compiler
+	warnings.
+
+	* fixinc/fixlib.h (ENV_TABLE): Get ORIGDIR from the environment.
+	Change prototype of make_raw_shell_str.
+
+2000-07-27  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* fixinc/fixincl.c [__MSDOS__]: Don't include "server.h".
+	(initialize) [__MSDOS__]: Use tempnam.
+	(initialize): Don't use SIGPIPE if it is not defined.
+
+	* fixinc/fixfixes.c (main) [__MSDOS__]: freopen for stdout should
+	return stdout.
+
+2000-07-25  Bruce Korb  <bkorb@gnu.org>
+
+	* fixinc/fix*.[ch]: substantially reworked to make it possible
+	to run this program without using fork(2) or pipe(2) (i.e. in
+	a DOS environment).
+
 2000-08-04  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* cppdefault.h (WINT_TYPE): Define.

gcc/fixinc/README

@@ -67,7 +67,7 @@ Here are the rules for making fixes in the inclhack.def file:
     It is nice if:
 
     3.  The expression is as simple as possible to both
-        process and uderstand by people.  :-)
+        process and understand by people.  :-)
 
         Please take advantage of the fact AutoGen will glue
         together string fragments.  It helps.  Also take note

gcc/fixinc/check.tpl

@@ -19,8 +19,9 @@ SRCDIR=`pwd`/inc
 FIND_BASE='.'
 VERBOSE=1
 INPUT=`pwd`
+ORIGDIR=${INPUT}
 
-export TARGET_MACHINE DESTDIR SRCDIR FIND_BASE VERBOSE INPUT
+export TARGET_MACHINE DESTDIR SRCDIR FIND_BASE VERBOSE INPUT ORIGDIR
 
 rm -rf ${DESTDIR} ${SRCDIR}
 mkdir ${DESTDIR} ${SRCDIR}

gcc/fixinc/fixfixes.c

@@ -60,6 +60,10 @@ Boston, MA 02111-1307, USA.  */
 #include "fixlib.h"
 #define    GTYPE_SE_CT 1
 
+#ifdef __MSDOS__
+#include "fixincl.x"
+#endif
+
 tSCC zNeedsArg[] = "fixincl error:  `%s' needs %s argument (c_fix_arg[%d])\n";
 
 typedef struct {
@@ -725,3 +729,79 @@ apply_fix( p_fixd, filname )
   buf = load_file_data (stdin);
   (*pfe->fix_proc)( filname, buf, p_fixd );
 }
+
+#ifdef __MSDOS__
+tSCC z_usage[] =
+"USAGE: applyfix <fix-name> <file-to-fix> <file-source> <file-destination>\n";
+tSCC z_reopen[] =
+"FS error %d (%s) reopening %s as std%s\n";
+
+int
+main( argc, argv )
+  int     argc;
+  char**  argv;
+{
+  tFixDesc* pFix;
+  char* pz_tmptmp;
+  char* pz_tmp_base;
+  char* pz_tmp_dot;
+
+  if (argc != 5)
+    {
+    usage_failure:
+      fputs( z_usage, stderr );
+      return EXIT_FAILURE;
+    }
+
+  {
+    char* pz = argv[1];
+    long  idx;
+
+    if (! isdigit( *pz ))
+      goto usage_failure;
+
+    idx = strtol( pz, &pz, 10 );
+    if ((*pz != NUL) || ((unsigned)idx >= FIX_COUNT))
+      goto usage_failure;
+    pFix = fixDescList + idx;
+  }
+
+  if (freopen( argv[3], "r", stdin ) != stdin)
+    {
+      fprintf( stderr, z_reopen, errno, strerror( errno ), argv[3], "in" );
+      return EXIT_FAILURE;
+    }
+
+  pz_tmptmp = (char*)xmalloc( strlen( argv[4] ) + 5 );
+  strcpy( pz_tmptmp, argv[4] );
+
+  /* Don't lose because "12345678" and "12345678X" map to the same
+     file under DOS restricted 8+3 file namespace.  Note that DOS
+     doesn't allow more than one dot in the trunk of a file name.  */
+  pz_tmp_base = basename( pz_tmptmp );
+  pz_tmp_dot = strchr( pz_tmp_base, '.' );
+  if (pathconf( pz_tmptmp, _PC_NAME_MAX ) <= 12	/* is this DOS or Windows9X? */
+      && pz_tmp_dot != (char*)NULL)
+    strcpy( pz_tmp_dot+1, "X" ); /* nuke the original extension */
+  else
+    strcat( pz_tmptmp, ".X" );
+  if (freopen( pz_tmptmp, "w", stdout ) != stdout)
+    {
+      fprintf( stderr, z_reopen, errno, strerror( errno ), pz_tmptmp, "out" );
+      return EXIT_FAILURE;
+    }
+
+  apply_fix( pFix, argv[1] );
+  close( STDOUT_FILENO );
+  close( STDIN_FILENO );
+  unlink( argv[4] );
+  if (rename( pz_tmptmp, argv[4] ) != 0)
+    {
+      fprintf( stderr, "error %d (%s) renaming %s to %s\n", errno,
+               strerror( errno ), pz_tmptmp, argv[4] );
+      return EXIT_FAILURE;
+    }
+
+  return EXIT_SUCCESS;
+}
+#endif

gcc/fixinc/fixincl.sh

@@ -95,6 +95,7 @@ esac
 
 # Original directory.
 ORIGDIR=`${PWDCMD}`
+export ORIGDIR
 FIXINCL=${ORIGDIR}/fixinc/fixincl
 export FIXINCL
 
@@ -111,7 +112,9 @@ if test $VERBOSE -gt 0
 then echo Fixing headers into ${LIB} for ${target_canonical} target ; fi
 
 # Determine whether this system has symbolic links.
-if ln -s X $LIB/ShouldNotExist 2>/dev/null; then
+if test -n "$DJDIR"; then
+  LINKS=false
+elif ln -s X $LIB/ShouldNotExist 2>/dev/null; then
   rm -f $LIB/ShouldNotExist
   LINKS=true
 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
@@ -422,7 +425,9 @@ done
 if test $VERBOSE -gt 2
 then echo 'Cleaning up DONE files.' ; fi
 cd $LIB
-find . -name DONE -exec rm -f '{}' ';'
+# Look for files case-insensitively, for the benefit of
+# DOS/Windows filesystems.
+find . -name '[Dd][Oo][Nn][Ee]' -exec rm -f '{}' ';'
 
 if test $VERBOSE -gt 1
 then echo 'Cleaning up unneeded directories:' ; fi
@@ -435,11 +440,15 @@ for file in $all_dirs; do
   fi
 done 2> /dev/null
 
-test $VERBOSE -gt 2 && echo "Removing unused symlinks"
+# On systems which don't support symlinks, `find' may barf
+# if called with "-type l" predicate.  So only use that if
+# we know we should look for symlinks.
+if $LINKS; then
+  test $VERBOSE -gt 2 && echo "Removing unused symlinks"
 
-all_dirs=`find . -type l -print`
-for file in $all_dirs
-do
+  all_dirs=`find . -type l -print`
+  for file in $all_dirs
+  do
     if ls -lLd $file > /dev/null
     then :
     else rm -f $file
@@ -448,7 +457,8 @@ do
            test $VERBOSE -gt 3 && \
            echo "  removed `dirname $file`"
     fi
-done 2> /dev/null
+  done 2> /dev/null
+fi
 
 if test $VERBOSE -gt 0
 then echo fixincludes is done ; fi

gcc/fixinc/fixlib.c

@@ -245,3 +245,57 @@ mn_get_regexps( label_re, name_re, who )
   *name_re = &mn_name_re;
 }
 #endif
+
+
+#ifdef __MSDOS__
+
+char*
+make_raw_shell_str( pz_d, pz_s, smax )
+  char*       pz_d;
+  tCC*        pz_s;
+  size_t      smax;
+{
+  tSCC zQ[] = "'\\''";
+  size_t     dtaSize;
+  char*      pz_d_start = pz_d;
+
+  smax--; /* adjust for trailing NUL */
+
+  dtaSize = strlen( pz_s ) + 3;
+
+  {
+    const char* pz = pz_s - 1;
+
+    for (;;) {
+      pz = strchr( pz+1, '\'' );
+      if (pz == (char*)NULL)
+        break;
+      dtaSize += sizeof( zQ )-1;
+    }
+  }
+  if (dtaSize > smax)
+    return (char*)NULL;
+
+  *(pz_d++) = '\'';
+
+  for (;;) {
+    if (pz_d - pz_d_start >= smax)
+      return (char*)NULL;
+    switch (*(pz_d++) = *(pz_s++)) {
+    case NUL:
+      goto loopDone;
+
+    case '\'':
+      if (pz_d - pz_d_start >= smax - sizeof( zQ )-1)
+	return (char*)NULL;
+      strcpy( pz_d-1, zQ );
+      pz_d += sizeof( zQ )-2;
+    }
+  } loopDone:;
+  pz_d[-1] = '\'';
+  *pz_d    = NUL;
+
+  return pz_d;
+}
+
+#endif

gcc/fixinc/fixlib.h

@@ -100,6 +100,9 @@ typedef int apply_fix_p_t;  /* Apply Fix Predicate Type */
   _ENV_( pz_machine,   BOOL_TRUE, "TARGET_MACHINE",  \
          "output from config.guess" )                \
                                                      \
+  _ENV_( pz_orig_dir,  BOOL_TRUE, "ORIGDIR",         \
+         "directory of fixincl and applyfix" )       \
+                                                     \
   _ENV_( pz_src_dir,   BOOL_TRUE, "SRCDIR",          \
          "directory of original files" )             \
                                                      \
@@ -204,6 +207,10 @@ void   compile_re     _P_(( tCC* pat, regex_t* re, int match,
 void apply_fix _P_(( tFixDesc* p_fixd, tCC* filname ));
 apply_fix_p_t run_test _P_((tCC* t_name, tCC* f_name, tCC* text ));
 
+#ifdef __MSDOS__
+char* make_raw_shell_str _P_(( char* pz_d, tCC* pz_s, size_t smax ));
+#endif
+
 #ifdef MN_NAME_PAT
 void   mn_get_regexps _P_(( regex_t** label_re, regex_t** name_re,
 			    tCC *who ));