X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/2cec9080f685192e231333686b411fb524239a1b..827aca04ebd852b63087d80d8e420bb325bb9bd5:/src/files.c diff --git a/src/files.c b/src/files.c index 5bc862d8..76aa7fe3 100644 --- a/src/files.c +++ b/src/files.c @@ -1,44 +1,40 @@ /* Open and close files for Bison. - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005 - 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., 51 Franklin Street, Fifth Floor, Boston, MA - 02110-1301, USA. */ + along with this program. If not, see . */ #include #include "system.h" #include +#include #include #include +#include +#include #include #include "complain.h" -#include "dirname.h" #include "files.h" #include "getargs.h" #include "gram.h" -#include "stdio-safer.h" -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 @@ -48,38 +44,43 @@ struct obstack post_prologue_obstack; char const *spec_outfile = NULL; /* for -o. */ char const *spec_file_prefix = NULL; /* for -b. */ char const *spec_name_prefix = NULL; /* for -p. */ -char const *spec_verbose_file = NULL; /* for --verbose. */ -char const *spec_graph_file = NULL; /* for -g. */ -char const *spec_defines_file = NULL; /* for --defines. */ -char const *parser_file_name; +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; /* 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/'. */ -static char const *all_but_ext; -static char const *all_but_tab_ext; -char const *dir_prefix; +char *all_but_ext; +static char *all_but_tab_ext; +char *dir_prefix; /* C source file extension (the parser source). */ -static char const *src_extension = NULL; -/* Header file extension (if option ``-d'' is specified). */ -static char const *header_extension = NULL; +static char *src_extension = NULL; +/* Header file extension (if option '`-d'' is specified). */ +static char *header_extension = NULL; /*-----------------------------------------------------------------. | Return a newly allocated string composed of the concatenation of | @@ -109,7 +110,8 @@ xfopen (const char *name, const char *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; } @@ -125,42 +127,47 @@ xfclose (FILE *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")); } +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. | `------------------------------------------------------------------*/ -/* 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 = xmalloc (strlen (in) + 1); - - for (temp = out; *in; in++, out++) - if (*in == from) - *out = to; - else - *out = *in; - *out = 0; - return (temp); -} - /* 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'); + } } /* Compute extensions from the given c source file extension. */ @@ -171,8 +178,9 @@ 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'); } @@ -183,7 +191,7 @@ compute_exts_from_src (const char *ext) *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. @@ -206,24 +214,23 @@ compute_exts_from_src (const char *ext) 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 = base_name (file_name); + *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; } } @@ -245,50 +252,53 @@ compute_file_name_parts (void) /* 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 = ""; - all_but_tab_ext = "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 = ""; - all_but_tab_ext = - xstrndup (base, - (strlen (base) - (ext ? strlen (ext) : 0))); - } - - all_but_ext = concat2 (all_but_tab_ext, TAB_EXT); + { + /* 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 + 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); } } @@ -299,44 +309,99 @@ compute_file_name_parts (void) void compute_output_file_names (void) { - char const *name[4]; - int i; - int j; - int names = 0; - 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"); - name[names++] = parser_file_name = - spec_outfile ? spec_outfile : concat2 (all_but_ext, src_extension); + parser_file_name = + (spec_outfile + ? xstrdup (spec_outfile) + : concat2 (all_but_ext, src_extension)); if (defines_flag) { if (! spec_defines_file) - spec_defines_file = concat2 (all_but_ext, header_extension); - name[names++] = 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, ".vcg"); - name[names++] = 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) { - spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT); - name[names++] = spec_verbose_file; + 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 (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); } +} - 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])); +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); }