Adding upstream version 5.2.37.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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415
mksyntax.c
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415
mksyntax.c
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/*
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* mksyntax.c - construct shell syntax table for fast char attribute lookup.
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*/
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/* Copyright (C) 2000-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdio.h>
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#include "bashansi.h"
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#include "chartypes.h"
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#include <errno.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "syntax.h"
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extern int optind;
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extern char *optarg;
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#ifndef errno
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extern int errno;
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#endif
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#ifndef HAVE_STRERROR
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extern char *strerror();
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#endif
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struct wordflag {
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int flag;
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char *fstr;
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} wordflags[] = {
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{ CWORD, "CWORD" },
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{ CSHMETA, "CSHMETA" },
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{ CSHBRK, "CSHBRK" },
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{ CBACKQ, "CBACKQ" },
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{ CQUOTE, "CQUOTE" },
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{ CSPECL, "CSPECL" },
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{ CEXP, "CEXP" },
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{ CBSDQUOTE, "CBSDQUOTE" },
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{ CBSHDOC, "CBSHDOC" },
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{ CGLOB, "CGLOB" },
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{ CXGLOB, "CXGLOB" },
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{ CXQUOTE, "CXQUOTE" },
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{ CSPECVAR, "CSPECVAR" },
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{ CSUBSTOP, "CSUBSTOP" },
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{ CBLANK, "CBLANK" },
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};
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#define N_WFLAGS (sizeof (wordflags) / sizeof (wordflags[0]))
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#define SYNSIZE 256
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int lsyntax[SYNSIZE];
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int debug;
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char *progname;
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char preamble[] = "\
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/*\n\
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* This file was generated by mksyntax. DO NOT EDIT.\n\
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*/\n\
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\n";
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char includes[] = "\
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#include \"config.h\"\n\
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#include \"stdc.h\"\n\
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#include \"syntax.h\"\n\n";
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static void
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usage()
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{
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fprintf (stderr, "%s: usage: %s [-d] [-o filename]\n", progname, progname);
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exit (2);
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}
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#ifdef INCLUDE_UNUSED
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static int
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getcflag (s)
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char *s;
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{
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int i;
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for (i = 0; i < N_WFLAGS; i++)
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if (strcmp (s, wordflags[i].fstr) == 0)
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return wordflags[i].flag;
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return -1;
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}
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#endif
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static char *
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cdesc (i)
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int i;
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{
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static char xbuf[16];
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if (i == ' ')
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return "SPC";
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else if (ISPRINT (i))
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{
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xbuf[0] = i;
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xbuf[1] = '\0';
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return (xbuf);
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}
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else if (i == CTLESC)
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return "CTLESC";
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else if (i == CTLNUL)
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return "CTLNUL";
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else if (i == '\033') /* ASCII */
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return "ESC";
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xbuf[0] = '\\';
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xbuf[2] = '\0';
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switch (i)
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{
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#ifdef __STDC__
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case '\a': xbuf[1] = 'a'; break;
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case '\v': xbuf[1] = 'v'; break;
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#else
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case '\007': xbuf[1] = 'a'; break;
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case 0x0B: xbuf[1] = 'v'; break;
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#endif
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case '\b': xbuf[1] = 'b'; break;
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case '\f': xbuf[1] = 'f'; break;
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case '\n': xbuf[1] = 'n'; break;
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case '\r': xbuf[1] = 'r'; break;
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case '\t': xbuf[1] = 't'; break;
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default: sprintf (xbuf, "%d", i); break;
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}
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return xbuf;
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}
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static char *
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getcstr (f)
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int f;
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{
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int i;
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for (i = 0; i < N_WFLAGS; i++)
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if (f == wordflags[i].flag)
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return (wordflags[i].fstr);
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return ((char *)NULL);
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}
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static void
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addcstr (str, flag)
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char *str;
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int flag;
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{
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char *s, *fstr;
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unsigned char uc;
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for (s = str; s && *s; s++)
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{
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uc = *s;
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if (debug)
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{
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fstr = getcstr (flag);
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fprintf(stderr, "added %s for character %s\n", fstr, cdesc(uc));
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}
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lsyntax[uc] |= flag;
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}
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}
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static void
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addcchar (c, flag)
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unsigned char c;
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int flag;
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{
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char *fstr;
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if (debug)
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{
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fstr = getcstr (flag);
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fprintf (stderr, "added %s for character %s\n", fstr, cdesc(c));
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}
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lsyntax[c] |= flag;
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}
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static void
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addblanks ()
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{
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register int i;
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unsigned char uc;
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for (i = 0; i < SYNSIZE; i++)
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{
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uc = i;
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/* Since we don't call setlocale(), this defaults to the "C" locale, and
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the default blank characters will be space and tab. */
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if (isblank (uc))
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lsyntax[uc] |= CBLANK;
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}
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}
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/* load up the correct flag values in lsyntax */
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static void
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load_lsyntax ()
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{
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/* shell metacharacters */
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addcstr (shell_meta_chars, CSHMETA);
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/* shell word break characters */
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addcstr (shell_break_chars, CSHBRK);
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addcchar ('`', CBACKQ);
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addcstr (shell_quote_chars, CQUOTE);
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addcchar (CTLESC, CSPECL);
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addcchar (CTLNUL, CSPECL);
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addcstr (shell_exp_chars, CEXP);
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addcstr (slashify_in_quotes, CBSDQUOTE);
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addcstr (slashify_in_here_document, CBSHDOC);
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addcstr (shell_glob_chars, CGLOB);
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#if defined (EXTENDED_GLOB)
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addcstr (ext_glob_chars, CXGLOB);
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#endif
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addcstr (shell_quote_chars, CXQUOTE);
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addcchar ('\\', CXQUOTE);
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addcstr ("@*#?-$!", CSPECVAR); /* omits $0...$9 and $_ */
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addcstr ("-=?+", CSUBSTOP); /* OP in ${paramOPword} */
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addblanks ();
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}
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static void
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dump_lflags (fp, ind)
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FILE *fp;
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int ind;
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{
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int xflags, first, i;
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xflags = lsyntax[ind];
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first = 1;
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if (xflags == 0)
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fputs (wordflags[0].fstr, fp);
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else
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{
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for (i = 1; i < N_WFLAGS; i++)
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if (xflags & wordflags[i].flag)
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{
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if (first)
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first = 0;
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else
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putc ('|', fp);
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fputs (wordflags[i].fstr, fp);
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}
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}
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}
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static void
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wcomment (fp, i)
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FILE *fp;
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int i;
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{
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fputs ("\t\t/* ", fp);
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fprintf (fp, "%s", cdesc(i));
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fputs (" */", fp);
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}
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static void
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dump_lsyntax (fp)
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FILE *fp;
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{
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int i;
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fprintf (fp, "int sh_syntabsiz = %d;\n", SYNSIZE);
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fprintf (fp, "int sh_syntaxtab[%d] = {\n", SYNSIZE);
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for (i = 0; i < SYNSIZE; i++)
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{
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putc ('\t', fp);
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dump_lflags (fp, i);
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putc (',', fp);
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wcomment (fp, i);
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putc ('\n', fp);
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}
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fprintf (fp, "};\n");
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}
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int opt, i;
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char *filename;
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FILE *fp;
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if ((progname = strrchr (argv[0], '/')) == 0)
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progname = argv[0];
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else
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progname++;
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filename = (char *)NULL;
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debug = 0;
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while ((opt = getopt (argc, argv, "do:")) != EOF)
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{
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switch (opt)
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{
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case 'd':
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debug = 1;
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break;
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case 'o':
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filename = optarg;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (filename)
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{
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fp = fopen (filename, "w");
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if (fp == 0)
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{
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fprintf (stderr, "%s: %s: cannot open: %s\n", progname, filename, strerror(errno));
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exit (1);
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}
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}
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else
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{
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filename = "stdout";
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fp = stdout;
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}
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for (i = 0; i < SYNSIZE; i++)
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lsyntax[i] = CWORD;
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load_lsyntax ();
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fprintf (fp, "%s\n", preamble);
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fprintf (fp, "%s\n", includes);
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dump_lsyntax (fp);
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if (fp != stdout)
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fclose (fp);
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exit (0);
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}
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#if !defined (HAVE_STRERROR)
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#include <bashtypes.h>
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#if defined (HAVE_SYS_PARAM_H)
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# include <sys/param.h>
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#endif
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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/* Return a string corresponding to the error number E. From
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the ANSI C spec. */
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#if defined (strerror)
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# undef strerror
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#endif
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char *
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strerror (e)
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int e;
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{
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static char emsg[40];
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#if defined (HAVE_SYS_ERRLIST)
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extern int sys_nerr;
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extern char *sys_errlist[];
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if (e > 0 && e < sys_nerr)
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return (sys_errlist[e]);
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else
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#endif /* HAVE_SYS_ERRLIST */
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{
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sprintf (emsg, "Unknown system error %d", e);
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return (&emsg[0]);
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}
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}
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#endif /* HAVE_STRERROR */
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