source: kBuild/trunk/src/sed/sed/sed.c@ 797

#define COPYRIGHT_NOTICE "Copyright (C) 2003 Free Software Foundation, Inc."
#define BUG_ADDRESS "bonzini@gnu.org"

/*  GNU SED, a batch stream editor.
    Copyright (C) 1989,90,91,92,93,94,95,98,99,2002,2003
    Free Software Foundation, Inc.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2, or (at your option)
    any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */


#include "sed.h"


#include <stdio.h>
#ifdef HAVE_STRINGS_H
# include <strings.h>
#else
# include <string.h>
#endif /*HAVE_STRINGS_H*/
#ifdef HAVE_MEMORY_H
# include <memory.h>
#endif

#ifndef HAVE_STRCHR
# define strchr index
# define strrchr rindex
#endif

#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif

#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include "getopt.h"

#ifndef BOOTSTRAP
#ifndef HAVE_STDLIB_H
 extern char *getenv P_((const char *));
#endif
#endif

#ifndef HAVE_STRTOUL
# define ATOI(x)        atoi(x)
#else
# define ATOI(x)        strtoul(x, NULL, 0)
#endif

int extended_regexp_flags = 0;

/* If set, fflush(stdout) on every line output. */
bool unbuffered_output = false;

/* If set, don't write out the line unless explicitly told to */
bool no_default_output = false;

/* If set, reset line counts on every new file. */
bool separate_files = false;

/* How do we edit files in-place? (we don't if NULL) */
char *in_place_extension = NULL;

/* Do we need to be pedantically POSIX compliant? */
enum posixicity_types posixicity;

/* How long should the `l' command's output line be? */
countT lcmd_out_line_len = 70;

/* The complete compiled SED program that we are going to run: */
static struct vector *the_program = NULL;

static void usage P_((int));
static void
usage(status)
  int status;
{
  FILE *out = status ? stderr : stdout;

#ifdef REG_PERL
#define PERL_HELP _("  -R, --regexp-perl\n                 use Perl 5's regular expressions syntax in the script.\n")
#else
#define PERL_HELP ""
#endif

  fprintf(out, _("\
Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n\
\n"), myname);

  fprintf(out, _("  -n, --quiet, --silent\n\
                 suppress automatic printing of pattern space\n"));
  fprintf(out, _("  -e script, --expression=script\n\
                 add the script to the commands to be executed\n"));
  fprintf(out, _("  -f script-file, --file=script-file\n\
                 add the contents of script-file to the commands to be executed\n"));
  fprintf(out, _("  -i[SUFFIX], --in-place[=SUFFIX]\n\
                 edit files in place (makes backup if extension supplied)\n"));
  fprintf(out, _("  -l N, --line-length=N\n\
                 specify the desired line-wrap length for the `l' command\n"));
  fprintf(out, _("  --posix\n\
                 disable all GNU extensions.\n"));
  fprintf(out, _("  -r, --regexp-extended\n\
                 use extended regular expressions in the script.\n"));
  fprintf(out, PERL_HELP);
  fprintf(out, _("  -s, --separate\n\
                 consider files as separate rather than as a single continuous\n\
                 long stream.\n"));
  fprintf(out, _("  -u, --unbuffered\n\
                 load minimal amounts of data from the input files and flush\n\
                 the output buffers more often\n"));
  fprintf(out, _("      --help     display this help and exit\n"));
  fprintf(out, _("      --version  output version information and exit\n"));
  fprintf(out, _("\n\
If no -e, --expression, -f, or --file option is given, then the first\n\
non-option argument is taken as the sed script to interpret.  All\n\
remaining arguments are names of input files; if no input files are\n\
specified, then the standard input is read.\n\
\n"));
  fprintf(out, _("E-mail bug reports to: %s .\n\
Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"),
          BUG_ADDRESS, PACKAGE);

  ck_fclose (NULL);
  exit (status);
}

int
main(argc, argv)
  int argc;
  char **argv;
{
#ifdef REG_PERL
#define SHORTOPTS "snrRue:f:l:i::V:"
#else
#define SHORTOPTS "snrue:f:l:i::V:"
#endif

  static struct option longopts[] = {
    {"regexp-extended", 0, NULL, 'r'},
#ifdef REG_PERL
    {"regexp-perl", 0, NULL, 'R'},
#endif
    {"expression", 1, NULL, 'e'},
    {"file", 1, NULL, 'f'},
    {"in-place", 2, NULL, 'i'},
    {"line-length", 1, NULL, 'l'},
    {"quiet", 0, NULL, 'n'},
    {"posix", 0, NULL, 'p'},
    {"silent", 0, NULL, 'n'},
    {"separate", 0, NULL, 's'},
    {"unbuffered", 0, NULL, 'u'},
    {"version", 0, NULL, 'v'},
    {"help", 0, NULL, 'h'},
    {NULL, 0, NULL, 0}
  };

  int opt;
  int return_code;
  const char *cols = getenv("COLS");

  initialize_main (&argc, &argv);
#if HAVE_SETLOCALE
  /* Set locale according to user's wishes.  */
#ifdef _MSC_VER
  {
    /* The redmond guys doesn't listen to the user in the same way... */
    const char *lc_all = getenv ("LC_ALL");
    if (lc_all)
      setlocale (LC_ALL, lc_all);
    else
      {
        const char *lc_lang = getenv ("LANG");
        const char *lc_ctype = getenv ("LC_TYPE");
        const char *lc_collate = getenv ("LC_COLLATE");

        setlocale (LC_ALL, lc_lang ? lc_lang : "");
        if (lc_ctype)
          setlocale (LC_CTYPE, lc_ctype ? lc_ctype : "");
        if (lc_collate)
          setlocale (LC_COLLATE, lc_collate ? lc_collate : "");
      }
  }
#else
  setlocale (LC_ALL, "");
#endif
#endif
  initialize_mbcs ();

#if ENABLE_NLS

  /* Tell program which translations to use and where to find.  */
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);
#endif

  if (getenv("POSIXLY_CORRECT") != NULL)
    posixicity = POSIXLY_CORRECT;
  else
    posixicity = POSIXLY_EXTENDED;

  /* If environment variable `COLS' is set, use its value for
     the baseline setting of `lcmd_out_line_len'.  The "-1"
     is to avoid gratuitous auto-line-wrap on ttys.
   */
  if (cols)
    {
      countT t = ATOI(cols);
      if (t > 1)
        lcmd_out_line_len = t-1;
    }

  myname = *argv;
  while ((opt = getopt_long(argc, argv, SHORTOPTS, longopts, NULL)) != EOF)
    {
      switch (opt)
        {
        case 'n':
          no_default_output = true;
          break;
        case 'e':
          the_program = compile_string(the_program, optarg, strlen(optarg));
          break;
        case 'f':
          the_program = compile_file(the_program, optarg);
          break;

        case 'i':
          separate_files = true;
          if (optarg == NULL)
            /* use no backups */
            in_place_extension = ck_strdup ("*");

          else if (strchr(optarg, '*') != NULL)
            in_place_extension = ck_strdup(optarg);

          else
            {
              in_place_extension = MALLOC (strlen(optarg) + 2, char);
              in_place_extension[0] = '*';
              strcpy (in_place_extension + 1, optarg);
            }

          break;

        case 'l':
          lcmd_out_line_len = ATOI(optarg);
          break;

        case 'p':
          posixicity = POSIXLY_BASIC;
          break;

        case 'r':
          if (extended_regexp_flags)
            usage(4);
          extended_regexp_flags = REG_EXTENDED;
          break;

#ifdef REG_PERL
        case 'R':
          if (extended_regexp_flags)
            usage(4);
          extended_regexp_flags = REG_PERL;
          break;
#endif

        case 's':
          separate_files = true;
          break;

        case 'u':
          unbuffered_output = true;
          break;

        case 'v':
#ifdef REG_PERL
          fprintf(stdout, _("super-sed version %s\n"), VERSION);
          fprintf(stdout, _("based on GNU sed version %s\n\n"), SED_FEATURE_VERSION);
#else
          fprintf(stdout, _("GNU sed version %s\n"), VERSION);
#endif
          fprintf(stdout, _("%s\n\
This is free software; see the source for copying conditions.  There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n\
to the extent permitted by law.\n\
"), COPYRIGHT_NOTICE);
#ifdef KBUILD_VERSION_MAJOR
          fprintf(stdout, _("\n\
kBuild %d.%d.%d [" __DATE__ " " __TIME__ "]\n\
"), KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
#endif

          ck_fclose (NULL);
          exit (0);
        case 'h':
          usage(0);
        default:
          usage(4);
        }
    }

  if (!the_program)
    {
      if (optind < argc)
        {
          char *arg = argv[optind++];
          the_program = compile_string(the_program, arg, strlen(arg));
        }
      else
        usage(4);
    }
  check_final_program(the_program);

  return_code = process_files(the_program, argv+optind);

  finish_program(the_program);
  ck_fclose(NULL);

  return return_code;
}