X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0fb669f9d648dfdd7a39478a6b658511455ae966..9bcffa0c13d1abee13433f14cdb785cbb960425c:/src/files.c?ds=inline diff --git a/src/files.c b/src/files.c index aa65f41f..f698c7e9 100644 --- a/src/files.c +++ b/src/files.c @@ -1,31 +1,32 @@ /* Open and close files for Bison. - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004 - Free Software Foundation, Inc. + Copyright (C) 1984, 1986, 1989, 1992, 2000-2012 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" @@ -33,14 +34,6 @@ #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 tempting, but don't do that: for the time being our handling of the %directive vs --option leaves precedence to the options by deciding @@ -48,26 +41,46 @@ struct obstack post_prologue_obstack; 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'. -/* Prefix used to generate output file names. */ -char *short_base_name = NULL; + If --output was not specified but --file-prefix=dir/foo was specified, + 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'. + + 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; +static char *src_extension = NULL; /* Header file extension (if option ``-d'' is specified). */ -const char *header_extension = NULL; +static char *header_extension = NULL; /*-----------------------------------------------------------------. | Return a newly allocated string composed of the concatenation of | @@ -95,9 +108,10 @@ xfopen (const char *name, const char *mode) { 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; } @@ -113,42 +127,35 @@ 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")); } -/*---------------------------------------------------------------------. -| 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. */ -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 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 (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'); + } } /* Compute extensions from the given c source file extension. */ @@ -159,13 +166,14 @@ 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. @@ -174,7 +182,7 @@ compute_exts_from_src (const char *ext) `.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 = @@ -193,13 +201,13 @@ compute_exts_from_src (const char *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, '.'); + *ext = mbsrchr (*base, '.'); *tab = NULL; /* If there is an extension, check if there is a `.tab' part right @@ -216,32 +224,28 @@ filename_split (const char *filename, } -/* 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), - FULL_BASE_NAME and SHORT_BASE_NAME are `foo'. - - If --output=foo.tab.c was specified, FULL_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)))); @@ -249,40 +253,39 @@ compute_base_names (void) 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 + /* Otherwise, ALL_BUT_TAB_EXT 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))); + dir_prefix = xstrdup (""); + all_but_tab_ext = + 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); + 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. */ - filename_split (grammar_file, &base, &tab, &ext); if (ext && !yacc_flag) compute_exts_from_gf (ext); } @@ -295,44 +298,99 @@ compute_base_names (void) void compute_output_file_names (void) { - char const *name[4]; - int i; - int j; - int names = 0; - - 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"); - name[names++] = parser_file_name = - spec_outfile ? spec_outfile : concat2 (full_base_name, 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 (full_base_name, 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 (short_base_name, ".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 (short_base_name, 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); } - 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])); + 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); + } +} + +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); }