-/* Open and close files for bison,
- Copyright 1984, 1986, 1989, 1992, 2000, 2001, 2002
- Free Software Foundation, Inc.
+/* Open and close files for Bison.
+
+ Copyright (C) 1984, 1986, 1989, 1992, 2000-2010 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 "getargs.h"
-#include "files.h"
-#include "gram.h"
-#include "error.h"
-#include "complain.h"
-
-/* From basename.c. Almost a lie, as it returns a char *. */
-const char *base_name PARAMS ((char const *name));
-FILE *finput = NULL;
+#include <error.h>
+#include <dirname.h>
+#include <get-errno.h>
+#include <quote.h>
+#include <stdio-safer.h>
+#include <xstrndup.h>
-struct obstack action_obstack;
-struct obstack output_obstack;
-struct obstack pre_prologue_obstack;
-struct obstack post_prologue_obstack;
+#include "complain.h"
+#include "files.h"
+#include "getargs.h"
+#include "gram.h"
/* 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
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;
-char *infile = NULL;
+/* All computed output file names. */
+static char **file_names = NULL;
+static int file_names_count = 0;
-static char *full_base_name = NULL;
+uniqstr grammar_file = NULL;
+uniqstr current_file = NULL;
-/* Prefix used to generate output file names. */
-char *short_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'.
-/* Infix used to generate output file names (i.e., `.tab', or `_tab',
- or `'). */
-char *output_infix = NULL;
+ 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'.
-/* 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;
-\f
+ If --output was not specified but --file-prefix=dir/foo was specified,
+ ALL_BUT_EXT = `foo.tab' and ALL_BUT_TAB_EXT = `foo'.
-/*--------------------------.
-| Is SUFFIX ending STRING? |
-`--------------------------*/
+ 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'.
-int
-strsuffix (const char *string, const char *suffix)
-{
- size_t string_len = strlen (string);
- size_t suffix_len = strlen (suffix);
- if (suffix_len <= string_len)
- return !strcmp (string + string_len - suffix_len, suffix);
- else
- return 0;
-}
+ 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). */
+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 |
-| STRING1, and STRING2. |
+| STR1, and STR2. |
`-----------------------------------------------------------------*/
-char*
-stringappend (const char *string1, const char *string2)
+static char *
+concat2 (char const *str1, char const *str2)
{
- size_t len = strlen (string1) + strlen (string2);
- char *res = XMALLOC (char, len + 1);
+ size_t len = strlen (str1) + strlen (str2);
+ char *res = xmalloc (len + 1);
char *cp;
- cp = stpcpy (res, string1);
- cp = stpcpy (cp, string2);
+ cp = stpcpy (res, str1);
+ cp = stpcpy (cp, str2);
return res;
}
-
-/*-----------------------------------------------------------------.
-| Computes the macro name used to avoid double inclusion in the |
-| header of the parser and store it in header_macro_name. Be sure |
-| to produce valid CPP names (don't start with digit, remain |
-| alphanumerical + underscore). |
-`-----------------------------------------------------------------*/
-
-char *
-compute_header_macro (void)
-{
- const char *prefix = "BISON_";
- char *macro_name, *cp;
-
- if (spec_defines_file)
- {
- macro_name = XMALLOC (char,
- strlen (prefix) +
- strlen (spec_defines_file) + 1);
- cp = stpcpy (macro_name, prefix);
- cp = stpcpy (cp, spec_defines_file);
- }
- else
- {
- macro_name = XMALLOC (char,
- strlen (prefix) +
- strlen (full_base_name) +
- strlen (header_extension) + 1);
- cp = stpcpy (macro_name, prefix);
- cp = stpcpy (cp, full_base_name);
- cp = stpcpy (cp, header_extension);
- }
-
- for (cp = macro_name; *cp; ++cp)
- if (islower (*cp))
- *cp = toupper (*cp);
- else if (!isalnum (*cp))
- *cp = '_';
-
- return macro_name;
-}
-
-
/*-----------------------------------------------------------------.
| Try to open file NAME with mode MODE, and print an error message |
| if fails. |
{
FILE *ptr;
- ptr = fopen (name, mode);
+ ptr = fopen_safer (name, mode);
if (!ptr)
- error (2, errno, _("cannot open file `%s'"), name);
+ error (EXIT_FAILURE, get_errno (), _("cannot open file `%s'"), name);
return ptr;
}
| Try to close file PTR, and print an error message if fails. |
`-------------------------------------------------------------*/
-int
+void
xfclose (FILE *ptr)
{
- int result;
-
if (ptr == NULL)
- return 0;
+ return;
- result = fclose (ptr);
- if (result == EOF)
- error (2, errno, _("cannot close file"));
+ if (ferror (ptr))
+ error (EXIT_FAILURE, 0, _("I/O error"));
- return result;
+ if (fclose (ptr) != 0)
+ error (EXIT_FAILURE, get_errno (), _("cannot close file"));
}
-
+\f
/*------------------------------------------------------------------.
-| Return the path to the skeleton which locaction might be given in |
-| ENVVAR, otherwise return SKELETON_NAME. |
+| Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
`------------------------------------------------------------------*/
-const char *
-skeleton_find (const char *envvar, const char *skeleton_name)
-{
- const char *res = getenv (envvar);
-
-#if defined (MSDOS) || defined (_WIN32)
- const char *cp = getenv ("INIT");
- if (!res)
- {
- /* Skeleton file name without path */
- const char *skel_name = strrchr (skeleton_name, '/');
- if (!skel_name)
- skel_name = strrchr (skeleton_name, '\\');
- if (!skel_name)
- skel_name = skeleton_name;
- else
- ++skel_name;
-
- /* File doesn't exist in current directory; try in INIT directory. */
- if (cp)
- {
- res = XMALLOC (char, strlen (cp) + strlen (skel_name) + 2);
- sprintf (res, "%s%c%s", cp, '\\', skel_name);
- }
- else if (access (skel_name, 4) == 0) /* Look in current dir. */
- res = skel_name;
- else
- {
- /* Look in program locations dir. */
- extern char *program_name;
- cp = strrchr(program_name, '\\');
- if (!cp)
- return skeleton_name;
- else
- ++cp;
- res = XMALLOC (char, cp - program_name + strlen (skel_name) + 1);
- strncpy (res, program_name, cp - program_name);
- strcpy (res + (cp - program_name), skel_name);
- }
- }
-#endif /* defined (MSDOS) || defined (_WIN32) */
- if (!res)
- res = skeleton_name;
-
- return res;
-}
-\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)
-{
- char *temp;
- char *out;
-
- out = XMALLOC (char, strlen (in) + 1);
-
- for (temp = out; *in; in++, out++)
- if (*in == from)
- *out = to;
- else
- *out = *in;
- *out = 0;
- return (temp);
-}
-
-/* Computes extensions from the grammar file extension. */
+/* 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 (strcmp (ext, ".y") == 0)
+ {
+ 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.
`.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 exentension, check if there is a `.tab' part right
+ /* If there is an extension, check if there is a `.tab' part right
before. */
- if (*ext
- && (*ext - *base) > (int) strlen (".tab")
- && (!strncmp (*ext - strlen (".tab"), ".tab", strlen (".tab"))
- || !strncmp (*ext - strlen ("_tab"), "_tab", strlen ("_tab"))))
- *tab = *ext - strlen (".tab");
+ if (*ext)
+ {
+ size_t baselen = *ext - *base;
+ size_t dottablen = 4;
+ if (dottablen < baselen
+ && (strncmp (*ext - dottablen, ".tab", dottablen) == 0
+ || strncmp (*ext - dottablen, "_tab", dottablen) == 0))
+ *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 =
+ /* 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 =
+ /* 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 (tab)
- output_infix = xstrndup (tab,
- (strlen (tab) - (ext ? strlen (ext) : 0)));
-
if (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, the short base name is computed from the input
- grammar: `foo.yy' => `foo'. */
- filename_split (infile, &base, &tab, &ext);
- short_base_name =
- xstrndup (infile,
- (strlen (infile) - (ext ? strlen (ext) : 0)));
+ /* 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)));
}
- /* In these cases, always append `.tab'. */
- output_infix = xstrdup (EXT_TAB);
-
- full_base_name = XMALLOC (char,
- strlen (short_base_name)
- + strlen (EXT_TAB) + 1);
- stpcpy (stpcpy (full_base_name, short_base_name), EXT_TAB);
+ if (language->add_tab)
+ all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
+ else
+ all_but_ext = xstrdup (all_but_tab_ext);
- /* Computes the extensions from the grammar file name. */
- filename_split (infile, &base, &tab, &ext);
+ /* Compute the extensions from the grammar file name. */
if (ext && !yacc_flag)
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 : stringappend (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 = stringappend (full_base_name, header_extension);
+ if (defines_flag)
+ {
+ if (! spec_defines_file)
+ spec_defines_file = concat2 (all_but_ext, header_extension);
+ }
- /* It the graph filename if not given, we create it. */
- if (!spec_graph_file)
- spec_graph_file = stringappend (short_base_name, ".vcg");
+ 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);
+ }
+
+ 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);
+}
+
+void
+output_file_name_check (char **file_name)
+{
+ bool conflict = false;
+ if (0 == strcmp (*file_name, grammar_file))
+ {
+ complain (_("refusing to overwrite the input file %s"),
+ quote (*file_name));
+ conflict = true;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < file_names_count; i++)
+ if (0 == strcmp (file_names[i], *file_name))
+ {
+ warn (_("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);
+ }
+}
- spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT);
+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