-/* Open and close files for bison,
- Copyright 1984, 1986, 1989, 1992, 2000, 2001, 2002
+/* Open and close files for Bison.
+
+ Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#include "system.h"
-#include "getargs.h"
+
+#include <error.h>
+#include <get-errno.h>
+#include <quote.h>
+
+#include "complain.h"
#include "files.h"
+#include "getargs.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));
+const char *base_name (char const *name);
FILE *finput = NULL;
-struct obstack action_obstack;
-struct obstack attrs_obstack;
-struct obstack output_obstack;
+struct obstack pre_prologue_obstack;
+struct obstack post_prologue_obstack;
/* 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
char *spec_defines_file = NULL; /* for --defines. */
char *parser_file_name = NULL;
-char *infile = NULL;
-char *attrsfile = NULL;
+uniqstr grammar_file = NULL;
+uniqstr current_file = NULL;
static char *full_base_name = NULL;
/* Prefix used to generate output file names. */
char *short_base_name = NULL;
-/* Infix used to generate output file names (i.e., `.tab', or `_tab',
- or `'). */
-char *output_infix = NULL;
-
/* 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
-
-/*--------------------------.
-| Is SUFFIX ending STRING? |
-`--------------------------*/
-
-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;
-}
-
-
/*-----------------------------------------------------------------.
| 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. |
ptr = fopen (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;
-}
-
-
-/*------------------------------------------------------------------.
-| Return the path to the skeleton which locaction might be given in |
-| ENVVAR, otherwise return SKELETON_NAME. |
-`------------------------------------------------------------------*/
-
-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;
+ if (fclose (ptr) != 0)
+ error (EXIT_FAILURE, get_errno (), _("cannot close file"));
}
\f
-/*----------------------------------------------------------------.
-| Compute BASE_NAME, SHORT_BASE_NAME and output files extensions. |
-`----------------------------------------------------------------*/
+/*---------------------------------------------------------------------.
+| Compute FULL_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. */
tr (const char *in, char from, char to)
{
char *temp;
- char *out;
-
- out = XMALLOC (char, strlen (in) + 1);
+ char *out = xmalloc (strlen (in) + 1);
for (temp = out; *in; in++, out++)
if (*in == from)
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)
{
header_extension = 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)
{
*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;
+ }
}
const char *base, *tab, *ext;
/* If --output=foo.c was specified (SPEC_OUTFILE == foo.c),
- BASE_NAME and SHORT_BASE_NAME are `foo'.
+ FULL_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'.
+ If --output=foo.tab.c was specified, FULL_BASE_NAME is `foo.tab'
+ and SHORT_BASE_NAME is `foo'.
The precise -o name will be used for FTABLE. For other output
files, remove the ".c" or ".tab.c" suffix. */
(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);
}
else
{
/* Otherwise, the short base name is computed from the input
- grammar: `foo.yy' => `foo'. */
- filename_split (infile, &base, &tab, &ext);
+ grammar: `foo/bar.yy' => `bar'. */
+ filename_split (grammar_file, &base, &tab, &ext);
short_base_name =
- xstrndup (infile,
- (strlen (infile) - (ext ? strlen (ext) : 0)));
+ 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);
+ 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 (infile, &base, &tab, &ext);
+ /* Compute the extensions from the grammar file name. */
+ filename_split (grammar_file, &base, &tab, &ext);
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)
{
+ char const *name[4];
+ int i;
+ int j;
+ int names = 0;
+
compute_base_names ();
/* If not yet done. */
src_extension = ".c";
if (!header_extension)
header_extension = ".h";
-
- parser_file_name =
- spec_outfile ? spec_outfile : stringappend (full_base_name, 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);
- /* It the graph filename if not given, we create it. */
- if (!spec_graph_file)
- spec_graph_file = stringappend (short_base_name, ".vcg");
+ name[names++] = parser_file_name =
+ spec_outfile ? spec_outfile : concat2 (full_base_name, src_extension);
- spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT);
+ if (defines_flag)
+ {
+ if (! spec_defines_file)
+ spec_defines_file = concat2 (full_base_name, header_extension);
+ name[names++] = spec_defines_file;
+ }
+
+ if (graph_flag)
+ {
+ if (! spec_graph_file)
+ spec_graph_file = concat2 (short_base_name, ".vcg");
+ name[names++] = spec_graph_file;
+ }
+
+ if (report_flag)
+ {
+ spec_verbose_file = concat2 (short_base_name, OUTPUT_EXT);
+ name[names++] = spec_verbose_file;
+ }
- attrsfile = stringappend (short_base_name, EXT_STYPE_H);
+ for (j = 0; j < names; j++)
+ for (i = 0; i < j; i++)
+ if (strcmp (name[i], name[j]) == 0)
+ warn (_("conflicting outputs to file %s"), quote (name[i]));
}
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