/* Open and close files for Bison.
- Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1984, 1986, 1989, 1992, 2000-2013 Free Software
+ Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
- Bison 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 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 3 of the License, or
+ (at your option) any later version.
- Bison 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.
+ 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 Bison; see the file COPYING. If not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
-
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+#include <config.h>
#include "system.h"
#include <error.h>
+#include <dirname.h>
#include <get-errno.h>
+#include <quote.h>
+#include <quotearg.h>
+#include <stdio-safer.h>
+#include <xstrndup.h>
#include "complain.h"
#include "files.h"
#include "getargs.h"
#include "gram.h"
-/* From basename.c. Almost a lie, as it returns a char *. */
-const char *base_name (char const *name);
-
-FILE *finput = NULL;
-
-struct obstack pre_prologue_obstack;
-struct obstack post_prologue_obstack;
-
-/* Initializing some values below (such SPEC_NAME_PREFIX to `yy') is
+/* Initializing some values below (such SPEC_NAME_PREFIX to 'yy') is
tempting, but don't do that: for the time being our handling of the
%directive vs --option leaves precedence to the options by deciding
that if a %directive sets a variable which is really set (i.e., not
NULL), then the %directive is ignored. As a result, %name-prefix,
for instance, will not be honored. */
-char *spec_outfile = NULL; /* for -o. */
-char *spec_file_prefix = NULL; /* for -b. */
-const char *spec_name_prefix = NULL; /* for -p. */
-char *spec_verbose_file = NULL; /* for --verbose. */
-char *spec_graph_file = NULL; /* for -g. */
-char *spec_defines_file = NULL; /* for --defines. */
-char *parser_file_name = NULL;
+char const *spec_outfile = NULL; /* for -o. */
+char const *spec_file_prefix = NULL; /* for -b. */
+char const *spec_name_prefix = NULL; /* for -p. */
+char *spec_verbose_file = NULL; /* for --verbose. */
+char *spec_graph_file = NULL; /* for -g. */
+char *spec_xml_file = NULL; /* for -x. */
+char *spec_defines_file = NULL; /* for --defines. */
+char *parser_file_name;
+
+/* All computed output file names. */
+static char **file_names = NULL;
+static int file_names_count = 0;
uniqstr grammar_file = NULL;
uniqstr current_file = NULL;
-static char *full_base_name = NULL;
+/* If --output=dir/foo.c was specified,
+ DIR_PREFIX is 'dir/' and ALL_BUT_EXT and ALL_BUT_TAB_EXT are 'dir/foo'.
+
+ If --output=dir/foo.tab.c was specified, DIR_PREFIX is 'dir/',
+ ALL_BUT_EXT is 'dir/foo.tab', and ALL_BUT_TAB_EXT is 'dir/foo'.
+
+ If --output was not specified but --file-prefix=dir/foo was specified,
+ ALL_BUT_EXT = 'foo.tab' and ALL_BUT_TAB_EXT = 'foo'.
-/* Prefix used to generate output file names. */
-char *short_base_name = NULL;
+ If neither --output nor --file was specified but the input grammar
+ is name dir/foo.y, ALL_BUT_EXT and ALL_BUT_TAB_EXT are 'foo'.
+
+ If neither --output nor --file was specified, DIR_PREFIX is the
+ empty string (meaning the current directory); otherwise it is
+ 'dir/'. */
+
+char *all_but_ext;
+static char *all_but_tab_ext;
+char *dir_prefix;
/* C source file extension (the parser source). */
-const char *src_extension = NULL;
-/* Header file extension (if option ``-d'' is specified). */
-const char *header_extension = NULL;
+static char *src_extension = NULL;
+/* Header file extension (if option '`-d'' is specified). */
+static char *header_extension = NULL;
\f
/*-----------------------------------------------------------------.
| Return a newly allocated string composed of the concatenation of |
{
FILE *ptr;
- ptr = fopen (name, mode);
+ ptr = fopen_safer (name, mode);
if (!ptr)
- error (EXIT_FAILURE, get_errno (), _("cannot open file `%s'"), name);
+ error (EXIT_FAILURE, get_errno (),
+ _("%s: cannot open"), quotearg_colon (name));
return ptr;
}
return;
if (ferror (ptr))
- error (EXIT_FAILURE, 0, _("I/O error"));
+ error (EXIT_FAILURE, 0, _("input/output error"));
if (fclose (ptr) != 0)
error (EXIT_FAILURE, get_errno (), _("cannot close file"));
}
\f
-/*----------------------------------------------------------------.
-| Compute BASE_NAME, SHORT_BASE_NAME and output files extensions. |
-`----------------------------------------------------------------*/
-
-/* Replace all characters FROM by TO in the string IN.
- and returns a new allocated string. */
-static char *
-tr (const char *in, char from, char to)
+FILE *
+xfdopen (int fd, char const *mode)
{
- char *temp;
- char *out = xmalloc (strlen (in) + 1);
-
- for (temp = out; *in; in++, out++)
- if (*in == from)
- *out = to;
- else
- *out = *in;
- *out = 0;
- return (temp);
+ FILE *res = fdopen (fd, mode);
+ if (! res)
+ error (EXIT_FAILURE, get_errno (),
+ /* On a separate line to please the "unmarked_diagnostics"
+ syntax-check. */
+ "fdopen");
+ return res;
}
-/* Computes extensions from the grammar file extension. */
+/*------------------------------------------------------------------.
+| Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
+`------------------------------------------------------------------*/
+
+/* Compute extensions from the grammar file extension. */
static void
compute_exts_from_gf (const char *ext)
{
- src_extension = tr (ext, 'y', 'c');
- src_extension = tr (src_extension, 'Y', 'C');
- header_extension = tr (ext, 'y', 'h');
- header_extension = tr (header_extension, 'Y', 'H');
+ if (STREQ (ext, ".y"))
+ {
+ src_extension = xstrdup (language->src_extension);
+ header_extension = xstrdup (language->header_extension);
+ }
+ else
+ {
+ src_extension = xstrdup (ext);
+ header_extension = xstrdup (ext);
+ tr (src_extension, 'y', 'c');
+ tr (src_extension, 'Y', 'C');
+ tr (header_extension, 'y', 'h');
+ tr (header_extension, 'Y', 'H');
+ }
}
-/* Computes extensions from the given c source file extension. */
+/* Compute extensions from the given c source file extension. */
static void
compute_exts_from_src (const char *ext)
{
so the extenions must be computed unconditionally from the file name
given by this option. */
src_extension = xstrdup (ext);
- header_extension = tr (ext, 'c', 'h');
- header_extension = tr (header_extension, 'C', 'H');
+ header_extension = xstrdup (ext);
+ tr (header_extension, 'c', 'h');
+ tr (header_extension, 'C', 'H');
}
-/* Decompose FILENAME in four parts: *BASE, *TAB, and *EXT, the fourth
- part, (the directory) is ranging from FILENAME to the char before
+/* Decompose FILE_NAME in four parts: *BASE, *TAB, and *EXT, the fourth
+ part, (the directory) is ranging from FILE_NAME to the char before
*BASE, so we don't need an additional parameter.
*EXT points to the last period in the basename, or NULL if none.
If there is no *EXT, *TAB is NULL. Otherwise, *TAB points to
- `.tab' or `_tab' if present right before *EXT, or is NULL. *TAB
+ '.tab' or '_tab' if present right before *EXT, or is NULL. *TAB
cannot be equal to *BASE.
- None are allocated, they are simply pointers to parts of FILENAME.
+ None are allocated, they are simply pointers to parts of FILE_NAME.
Examples:
'/tmp/foo.tab.c' -> *BASE = 'foo.tab.c', *TAB = '.tab.c', *EXT =
'foo' -> *BASE = 'foo', *TAB = NULL, *EXT = NULL. */
static void
-filename_split (const char *filename,
- const char **base, const char **tab, const char **ext)
+file_name_split (const char *file_name,
+ const char **base, const char **tab, const char **ext)
{
- *base = base_name (filename);
+ *base = last_component (file_name);
/* Look for the extension, i.e., look for the last dot. */
*ext = strrchr (*base, '.');
*tab = NULL;
- /* If there is an extension, check if there is a `.tab' part right
+ /* If there is an extension, check if there is a '.tab' part right
before. */
if (*ext)
{
size_t baselen = *ext - *base;
- size_t dottablen = 4;
+ size_t dottablen = sizeof (TAB_EXT) - 1;
if (dottablen < baselen
- && (strncmp (*ext - dottablen, ".tab", dottablen) == 0
- || strncmp (*ext - dottablen, "_tab", dottablen) == 0))
- *tab = *ext - dottablen;
+ && STRPREFIX_LIT (TAB_EXT, *ext - dottablen))
+ *tab = *ext - dottablen;
}
}
-/* FIXME: Should use xstrndup. */
-
static void
-compute_base_names (void)
+compute_file_name_parts (void)
{
const char *base, *tab, *ext;
- /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c),
- BASE_NAME and SHORT_BASE_NAME are `foo'.
-
- If --output=foo.tab.c was specified, BASE_NAME is `foo.tab' and
- SHORT_BASE_NAME is `foo'.
+ /* Compute ALL_BUT_EXT and ALL_BUT_TAB_EXT from SPEC_OUTFILE
+ or GRAMMAR_FILE.
The precise -o name will be used for FTABLE. For other output
files, remove the ".c" or ".tab.c" suffix. */
if (spec_outfile)
{
- filename_split (spec_outfile, &base, &tab, &ext);
+ file_name_split (spec_outfile, &base, &tab, &ext);
+ dir_prefix = xstrndup (spec_outfile, base - spec_outfile);
- /* The full base name goes up the EXT, excluding it. */
- full_base_name =
- xstrndup (spec_outfile,
- (strlen (spec_outfile) - (ext ? strlen (ext) : 0)));
+ /* ALL_BUT_EXT goes up the EXT, excluding it. */
+ all_but_ext =
+ xstrndup (spec_outfile,
+ (strlen (spec_outfile) - (ext ? strlen (ext) : 0)));
- /* The short base name goes up to TAB, excluding it. */
- short_base_name =
- xstrndup (spec_outfile,
- (strlen (spec_outfile)
- - (tab ? strlen (tab) : (ext ? strlen (ext) : 0))));
+ /* ALL_BUT_TAB_EXT goes up to TAB, excluding it. */
+ all_but_tab_ext =
+ xstrndup (spec_outfile,
+ (strlen (spec_outfile)
+ - (tab ? strlen (tab) : (ext ? strlen (ext) : 0))));
if (ext)
- compute_exts_from_src (ext);
+ compute_exts_from_src (ext);
}
-
- /* If --file-prefix=foo was specified, FULL_BASE_NAME = `foo.tab'
- and SHORT_BASE_NAME = `foo'.
-
- Construct names from it. */
else
{
+ file_name_split (grammar_file, &base, &tab, &ext);
+
if (spec_file_prefix)
- {
- /* If --file-prefix=foo was specified, SHORT_BASE_NAME =
- `foo'. */
- short_base_name = xstrdup (spec_file_prefix);
- }
+ {
+ /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = 'foo'. */
+ dir_prefix =
+ xstrndup (spec_file_prefix,
+ last_component (spec_file_prefix) - spec_file_prefix);
+ all_but_tab_ext = xstrdup (spec_file_prefix);
+ }
else if (yacc_flag)
- {
- /* If --yacc, then the output is `y.tab.c'. */
- short_base_name = xstrdup ("y");
- }
+ {
+ /* If --yacc, then the output is 'y.tab.c'. */
+ dir_prefix = xstrdup ("");
+ all_but_tab_ext = xstrdup ("y");
+ }
+ else
+ {
+ /* Otherwise, ALL_BUT_TAB_EXT is computed from the input
+ grammar: 'foo/bar.yy' => 'bar'. */
+ dir_prefix = xstrdup ("");
+ all_but_tab_ext =
+ xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0)));
+ }
+
+ if (language->add_tab)
+ all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
else
- {
- /* Otherwise, the short base name is computed from the input
- grammar: `foo/bar.yy' => `bar'. */
- filename_split (grammar_file, &base, &tab, &ext);
- short_base_name =
- xstrndup (base,
- (strlen (base) - (ext ? strlen (ext) : 0)));
- }
-
- full_base_name = xmalloc (strlen (short_base_name)
- + strlen (TAB_EXT) + 1);
- stpcpy (stpcpy (full_base_name, short_base_name), TAB_EXT);
-
- /* Computes the extensions from the grammar file name. */
- filename_split (grammar_file, &base, &tab, &ext);
+ all_but_ext = xstrdup (all_but_tab_ext);
+
+ /* Compute the extensions from the grammar file name. */
if (ext && !yacc_flag)
- compute_exts_from_gf (ext);
+ compute_exts_from_gf (ext);
}
}
-/*-------------------------------------------------------.
-| Close the open files, compute the output files names. |
-`-------------------------------------------------------*/
+
+/* Compute the output file names. Warn if we detect conflicting
+ outputs to the same file. */
void
compute_output_file_names (void)
{
- compute_base_names ();
+ compute_file_name_parts ();
/* If not yet done. */
if (!src_extension)
- src_extension = ".c";
+ src_extension = xstrdup (".c");
if (!header_extension)
- header_extension = ".h";
+ header_extension = xstrdup (".h");
parser_file_name =
- spec_outfile ? spec_outfile : concat2 (full_base_name, src_extension);
+ (spec_outfile
+ ? xstrdup (spec_outfile)
+ : concat2 (all_but_ext, src_extension));
- /* It the defines filename if not given, we create it. */
- if (!spec_defines_file)
- spec_defines_file = concat2 (full_base_name, header_extension);
+ if (defines_flag)
+ {
+ if (! spec_defines_file)
+ spec_defines_file = concat2 (all_but_ext, header_extension);
+ }
+
+ if (graph_flag)
+ {
+ if (! spec_graph_file)
+ spec_graph_file = concat2 (all_but_tab_ext, ".dot");
+ output_file_name_check (&spec_graph_file);
+ }
+
+ if (xml_flag)
+ {
+ if (! spec_xml_file)
+ spec_xml_file = concat2 (all_but_tab_ext, ".xml");
+ output_file_name_check (&spec_xml_file);
+ }
- /* It the graph filename if not given, we create it. */
- if (!spec_graph_file)
- spec_graph_file = concat2 (short_base_name, ".vcg");
+ if (report_flag)
+ {
+ if (!spec_verbose_file)
+ spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
+ output_file_name_check (&spec_verbose_file);
+ }
+
+ free (all_but_tab_ext);
+ free (src_extension);
+ free (header_extension);
+}
- spec_verbose_file = concat2 (short_base_name, OUTPUT_EXT);
+void
+output_file_name_check (char **file_name)
+{
+ bool conflict = false;
+ if (STREQ (*file_name, grammar_file))
+ {
+ complain (NULL, complaint, _("refusing to overwrite the input file %s"),
+ quote (*file_name));
+ conflict = true;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < file_names_count; i++)
+ if (STREQ (file_names[i], *file_name))
+ {
+ complain (NULL, Wother, _("conflicting outputs to file %s"),
+ quote (*file_name));
+ conflict = true;
+ }
+ }
+ if (conflict)
+ {
+ free (*file_name);
+ *file_name = strdup ("/dev/null");
+ }
+ else
+ {
+ file_names = xnrealloc (file_names, ++file_names_count,
+ sizeof *file_names);
+ file_names[file_names_count-1] = xstrdup (*file_name);
+ }
+}
+
+void
+output_file_names_free (void)
+{
+ free (all_but_ext);
+ free (spec_verbose_file);
+ free (spec_graph_file);
+ free (spec_xml_file);
+ free (spec_defines_file);
+ free (parser_file_name);
+ free (dir_prefix);
+ {
+ int i;
+ for (i = 0; i < file_names_count; i++)
+ free (file_names[i]);
+ }
+ free (file_names);
}
projects / bison.git / blobdiff