Update.

1998-02-18 17:57  Ulrich Drepper  <drepper@cygnus.com>

	* iconv/Makefile: Add rules to build and install iconv program.
	* iconv/iconv_prog.c: New file.

1998-02-18 16:34  H.J. Lu  <hjl@gnu.org>

	* elf/dlsym.c (dlsym_doit): Fix scope and skip maps for
	_dl_lookup_symbol_skip call.
	* elf/dlvsym.c (dlvsym_doit): Likewise.

1998-02-18  Ulrich Drepper  <drepper@cygnus.com>

	* libio/iovsscanf.c: Do not include errno.h.

1 files changed, 414 insertions, 0 deletions

diff --git a/iconv/iconv_prog.c b/iconv/iconv_prog.c
new file mode 100644
index 0000000000..a8ede5069e
--- /dev/null
+++ b/iconv/iconv_prog.c
@@ -0,0 +1,414 @@
+/* Convert text in given files from the specified from-set to the to-set.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <argp.h>
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <iconv.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+/* Get libc version number.  */
+#include "../version.h"
+
+#define PACKAGE _libc_intl_domainname
+
+
+/* Name and version of program.  */
+static void print_version (FILE *stream, struct argp_state *state);
+void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
+
+#define OPT_VERBOSE	1000
+
+/* Definitions of arguments for argp functions.  */
+static const struct argp_option options[] =
+{
+  { NULL, 0, NULL, 0, N_("Input/Output format specification:") },
+  { "from-code", 'f', "NAME", 0, N_("encoding of original text") },
+  { "to-code", 't', "NAME", 0, N_("encoding for output") },
+  { NULL, 0, NULL, 0, N_("Output control:") },
+  { "output", 'o', "FILE", 0, N_("output file") },
+  { "verbose", OPT_VERBOSE, NULL, 0, N_("print progress information") },
+  { NULL, 0, NULL, 0, NULL }
+};
+
+/* Short description of program.  */
+static const char doc[] = N_("\
+Convert encoding of given files from one encoding to another.");
+
+/* Strings for arguments in help texts.  */
+static const char args_doc[] = N_("[FILE...]");
+
+/* Prototype for option handler.  */
+static error_t parse_opt __P ((int key, char *arg, struct argp_state *state));
+
+/* Function to print some extra text in the help message.  */
+static char *more_help __P ((int key, const char *text, void *input));
+
+/* Data structure to communicate with argp functions.  */
+static struct argp argp =
+{
+  options, parse_opt, args_doc, doc, NULL, more_help
+};
+
+/* Code sets to convert from and to respectively.  */
+static const char *from_code;
+static const char *to_code;
+
+/* File to write output to.  If NULL write to stdout.  */
+static const char *output_file;
+
+/* Nonzero if verbose ouput is wanted.  */
+static int verbose;
+
+/* Prototypes for the functions doing the actual work.  */
+static int process_block (iconv_t cd, const char *addr, size_t len,
+			  FILE *output);
+static int process_fd (iconv_t cd, int fd, FILE *output);
+static int process_file (iconv_t cd, FILE *input, FILE *output);
+
+
+int
+main (int argc, char *argv[])
+{
+  int status = EXIT_SUCCESS;
+  int remaining;
+  FILE *output;
+  iconv_t cd;
+
+  /* Set locale via LC_ALL.  */
+  setlocale (LC_ALL, "");
+
+  /* Set the text message domain.  */
+  textdomain (_libc_intl_domainname);
+
+  /* Parse and process arguments.  */
+  argp_parse (&argp, argc, argv, 0, &remaining, NULL);
+
+  /* If either the from- or to-code is not specified this is an error
+     since we do not know what to do.  */
+  if (from_code == NULL && to_code == NULL)
+    error (EXIT_FAILURE, 0,
+	   _("neither original not target encoding specified"));
+  if (from_code == NULL)
+    error (EXIT_FAILURE, 0, _("original encoding not specified using `-f'"));
+  if (to_code == NULL)
+    error (EXIT_FAILURE, 0, _("target encoding not specified using `-t'"));
+
+  /* Let's see whether we have these coded character sets.  */
+  cd = iconv_open (to_code, from_code);
+  if (cd == (iconv_t) -1)
+    if (errno == EINVAL)
+      error (EXIT_FAILURE, 0, _("conversion from `%s' to `%s' not supported"),
+	     from_code, to_code);
+    else
+      error (EXIT_FAILURE, errno, _("failed to start conversion processing"));
+
+  /* Determine output file.  */
+  if (output_file != NULL)
+    {
+      output = fopen (output_file, "w");
+      if (output == NULL)
+	error (EXIT_FAILURE, errno, _("cannot open output file"));
+    }
+  else
+    output = stdout;
+
+  /* Now process the remaining files.  Write them to stdout or the file
+     specified with the `-o' parameter.  If we have no file given as
+     the parameter process all from stdin.  */
+  if (remaining == argc)
+    process_file (cd, stdin, output);
+  else
+    do
+      {
+	struct stat st;
+	const char *addr;
+	int fd = open (argv[remaining], O_RDONLY);
+
+	if (verbose)
+	  printf ("%s:\n", argv[remaining]);
+
+	if (fd == -1)
+	  {
+	    error (0, errno, _("cannot open input file `%s'"),
+		   argv[remaining]);
+	    status = EXIT_FAILURE;
+	    continue;
+	  }
+
+	/* We have possibilities for reading the input file.  First try
+	   to mmap() it since this will provide the fastest solution.  */
+	if (fstat (fd, &st) == 0
+	    && ((addr = mmap (NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0))
+		!= MAP_FAILED))
+	  {
+	    /* Yes, we can use mmap().  The descriptor is not needed
+               anymore.  */
+	    if (close (fd) != 0)
+	      error (EXIT_FAILURE, errno, _("error while closing input `%s'"),
+		     argv[remaining]);
+
+	    if (process_block (cd, addr, st.st_size, stdout) < 0)
+	      {
+		/* Something went wrong.  */
+		status = EXIT_FAILURE;
+
+		/* We don't need the input data anymore.  */
+		munmap ((void *) addr, st.st_size);
+
+		/* We cannot go on with producing output since it might
+		   lead to problem because the last output might leave
+		   the output stream in an undefined state.  */
+		break;
+	      }
+
+	    /* We don't need the input data anymore.  */
+	    munmap ((void *) addr, st.st_size);
+	  }
+	else
+	  {
+	    /* Read the file in pieces.  */
+	    if (process_fd (cd, fd, output) != 0)
+	      {
+		/* Something went wrong.  */
+		status = EXIT_FAILURE;
+
+		/* We don't need the input file anymore.  */
+		close (fd);
+
+		/* We cannot go on with producing output since it might
+		   lead to problem because the last output might leave
+		   the output stream in an undefined state.  */
+		break;
+	      }
+
+	    /* Now close the file.  */
+	    close (fd);
+	  }
+      }
+    while (++remaining < argc);
+
+  /* Close the output file now.  */
+  if (fclose (output))
+    error (EXIT_FAILURE, errno, _("error while closing output file"));
+
+  return status;
+}
+
+
+/* Handle program arguments.  */
+static error_t
+parse_opt (int key, char *arg, struct argp_state *state)
+{
+  switch (key)
+    {
+    case 'f':
+      from_code = arg;
+      break;
+    case 't':
+      to_code = arg;
+      break;
+    case 'o':
+      output_file = arg;
+      break;
+    case OPT_VERBOSE:
+      verbose = 1;
+      break;
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+
+static char *
+more_help (int key, const char *text, void *input)
+{
+  switch (key)
+    {
+    case ARGP_KEY_HELP_EXTRA:
+      /* We print some extra information.  */
+      return strdup (gettext ("\
+Report bugs using the `glibcbug' script to <bugs@gnu.org>.\n"));
+    default:
+      break;
+    }
+  return (char *) text;
+}
+
+
+/* Print the version information.  */
+static void
+print_version (FILE *stream, struct argp_state *state)
+{
+  fprintf (stream, "iconv (GNU %s) %s\n", PACKAGE, VERSION);
+  fprintf (stream, gettext ("\
+Copyright (C) %s Free Software Foundation, Inc.\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\
+"), "1998");
+  fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
+}
+
+
+static int
+process_block (iconv_t cd, const char *addr, size_t len, FILE *output)
+{
+#define OUTBUF_SIZE	32768
+  char outbuf[OUTBUF_SIZE];
+  char *outptr = outbuf;
+  size_t outlen = OUTBUF_SIZE;
+
+  while (len > 0)
+    {
+      size_t n = iconv (cd, &addr, &len, &outptr, &outlen);
+
+      if (outptr != outbuf)
+	{
+	  /* We have something to write out.  */
+	  if (fwrite (outbuf, 1, outptr - outbuf, output) != 0
+	      || ferror (output))
+	    {
+	      /* Error occurred while printing the result.  */
+	      error (0, 0, _("\
+conversion stopped due to problem in writing the output"));
+	      return -1;
+	    }
+	}
+
+      if (n != (size_t) -1)
+	/* Everything is processed.  */
+	break;
+
+      if (errno != E2BIG)
+	{
+	  /* iconv() ran into a problem.  */
+	  switch (errno)
+	    {
+	    case EILSEQ:
+	      error (0, 0, _("illegal input sequence"));
+	      break;
+	    case EINVAL:
+	      error (0, 0, _("\
+incomplete character or shift sequence at end of buffer"));
+	      break;
+	    case EBADF:
+	      error (0, 0, _("internal error (illegal descriptor)"));
+	      break;
+	    default:
+	      error (0, 0, _("unknown iconv() error %d"), errno);
+	      break;
+	    }
+
+	  return -1;
+	}
+    }
+
+  return 0;
+}
+
+
+static int
+process_fd (iconv_t cd, int fd, FILE *output)
+{
+  /* we have a problem with reading from a desriptor since we must not
+     provide the iconv() function an incomplete character or shift
+     sequence at the end of the buffer.  Since we have to deal with
+     arbitrary encodings we must read the whole text in a buffer and
+     process it in one step.  */
+  static char *inbuf = NULL;
+  static size_t maxlen = 0;
+  char *inptr = NULL;
+  size_t actlen = 0;
+
+  while (actlen < maxlen)
+    {
+      size_t n = read (fd, inptr, maxlen - actlen);
+
+      if (n == 0)
+	/* No more text to read.  */
+	break;
+
+      if (n == -1)
+	{
+	  /* Error while reading.  */
+	  error (0, errno, _("error while reading the input"));
+	  return -1;
+	}
+
+      inptr += n;
+      actlen += n;
+    }
+
+  if (actlen == maxlen)
+    while (1)
+      {
+	size_t n;
+
+	/* Increase the buffer.  */
+	maxlen += 32768;
+	inbuf = realloc (inbuf, maxlen);
+	if (inbuf == NULL)
+	  error (0, errno, _("unable to allocate buffer for input"));
+	inptr = inbuf + actlen;
+
+	do
+	  {
+	    n = read (fd, inptr, maxlen - actlen);
+
+	    if (n == 0)
+	      /* No more text to read.  */
+	      break;
+
+	    if (n == -1)
+	      {
+		/* Error while reading.  */
+		error (0, errno, _("error while reading the input"));
+		return -1;
+	      }
+
+	    inptr += n;
+	    actlen += n;
+	  }
+	while (actlen < maxlen);
+
+	if (n == 0)
+	  /* Break again so we leave both loops.  */
+	  break;
+      }
+
+  /* Now we have all the input in the buffer.  Process it in one run.  */
+  return process_block (cd, inbuf, actlen, output);
+}
+
+
+static int
+process_file (iconv_t cd, FILE *input, FILE *output)
+{
+  /* This should be safe since we use this function only for `stdin' and
+     we haven't read anything so far.  */
+  return process_fd (cd, fileno (input), output);
+}