/* Open and close files for Bison.
- Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1984, 1986, 1989, 1992, 2000-2015 Free Software
+ Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#include <dirname.h>
#include <get-errno.h>
#include <quote.h>
+#include <quotearg.h>
#include <stdio-safer.h>
#include <xstrndup.h>
#include "getargs.h"
#include "gram.h"
-/* 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
char *parser_file_name;
/* All computed output file names. */
-static char **file_names = NULL;
-static int file_names_count = 0;
+typedef struct generated_file
+{
+ /** File name. */
+ char *name;
+ /** Whether is a generated source file (e.g., *.c, *.java...), as
+ opposed to the report file (e.g., *.output). When late errors
+ are detected, generated source files are removed. */
+ bool is_source;
+} generated_file;
+static generated_file *generated_files = NULL;
+static int generated_files_size = 0;
uniqstr grammar_file = NULL;
uniqstr current_file = NULL;
/* If --output=dir/foo.c was specified,
- DIR_PREFIX is `dir/' and ALL_BUT_EXT and ALL_BUT_TAB_EXT are `dir/foo'.
+ 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=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'.
+ ALL_BUT_EXT = 'foo.tab' and ALL_BUT_TAB_EXT = 'foo'.
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'.
+ 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/'. */
+ 'dir/'. */
char *all_but_ext;
static char *all_but_tab_ext;
/* C source file extension (the parser source). */
static char *src_extension = NULL;
-/* Header file extension (if option ``-d'' is specified). */
+/* Header file extension (if option '`-d'' is specified). */
static char *header_extension = NULL;
\f
/*-----------------------------------------------------------------.
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
+FILE *
+xfdopen (int fd, char const *mode)
+{
+ 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;
+}
+
/*------------------------------------------------------------------.
| Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
`------------------------------------------------------------------*/
-/* In the string S, replace all characters FROM by TO. */
-static void
-tr (char *s, char from, char to)
-{
- for (; *s; s++)
- if (*s == from)
- *s = to;
-}
-
/* Compute extensions from the grammar file extension. */
static void
compute_exts_from_gf (const char *ext)
{
- if (strcmp (ext, ".y") == 0)
+ if (STREQ (ext, ".y"))
{
src_extension = xstrdup (language->src_extension);
header_extension = xstrdup (language->header_extension);
*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 FILE_NAME.
static void
file_name_split (const char *file_name,
- const char **base, const char **tab, const char **ext)
+ const char **base, const char **tab, const char **ext)
{
*base = last_component (file_name);
*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;
}
}
/* ALL_BUT_EXT goes up the EXT, excluding it. */
all_but_ext =
- xstrndup (spec_outfile,
- (strlen (spec_outfile) - (ext ? strlen (ext) : 0)));
+ xstrndup (spec_outfile,
+ (strlen (spec_outfile) - (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))));
+ 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);
}
else
{
file_name_split (grammar_file, &base, &tab, &ext);
if (spec_file_prefix)
- {
- /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = `foo'. */
- dir_prefix = xstrndup (grammar_file, base - grammar_file);
- all_but_tab_ext = 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'. */
- dir_prefix = xstrdup ("");
- all_but_tab_ext = 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)));
- }
+ {
+ /* 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);
/* Compute the extensions from the grammar file name. */
if (ext && !yacc_flag)
- compute_exts_from_gf (ext);
+ compute_exts_from_gf (ext);
}
}
if (defines_flag)
{
if (! spec_defines_file)
- spec_defines_file = concat2 (all_but_ext, header_extension);
+ 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);
+ spec_graph_file = concat2 (all_but_tab_ext, ".dot");
+ output_file_name_check (&spec_graph_file, false);
}
if (xml_flag)
{
if (! spec_xml_file)
- spec_xml_file = concat2 (all_but_tab_ext, ".xml");
- output_file_name_check (spec_xml_file);
+ spec_xml_file = concat2 (all_but_tab_ext, ".xml");
+ output_file_name_check (&spec_xml_file, false);
}
if (report_flag)
{
- spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
- output_file_name_check (spec_verbose_file);
+ if (!spec_verbose_file)
+ spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
+ output_file_name_check (&spec_verbose_file, false);
}
free (all_but_tab_ext);
}
void
-output_file_name_check (char const *file_name)
+output_file_name_check (char **file_name, bool source)
{
- {
- 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));
- }
- file_names = xnrealloc (file_names, ++file_names_count, sizeof *file_names);
- file_names[file_names_count-1] = xstrdup (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 < generated_files_size; i++)
+ if (STREQ (generated_files[i].name, *file_name))
+ {
+ complain (NULL, Wother, _("conflicting outputs to file %s"),
+ quote (generated_files[i].name));
+ conflict = true;
+ }
+ }
+ if (conflict)
+ {
+ free (*file_name);
+ *file_name = strdup ("/dev/null");
+ }
+ else
+ {
+ generated_files = xnrealloc (generated_files, ++generated_files_size,
+ sizeof *generated_files);
+ generated_files[generated_files_size-1].name = xstrdup (*file_name);
+ generated_files[generated_files_size-1].is_source = source;
+ }
+}
+
+void
+unlink_generated_sources (void)
+{
+ int i;
+ for (i = 0; i < generated_files_size; i++)
+ if (generated_files[i].is_source)
+ /* Ignore errors. The file might not even exist. */
+ unlink (generated_files[i].name);
}
void
free (dir_prefix);
{
int i;
- for (i = 0; i < file_names_count; i++)
- free (file_names[i]);
+ for (i = 0; i < generated_files_size; i++)
+ free (generated_files[i].name);
}
- free (file_names);
+ free (generated_files);
}
projects / bison.git / blobdiff