X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a11166dddca333d8d599dbed23b20b17ed7b2537..dd31e17d7e415d3be8fc603f752f7e975297bcc2:/src/files.c?ds=sidebyside diff --git a/src/files.c b/src/files.c index 5073f04f..550e42ed 100644 --- a/src/files.c +++ b/src/files.c @@ -1,39 +1,38 @@ -/* Open and close files for bison, - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002 - Free Software Foundation, Inc. +/* Open and close files for Bison. + + 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., 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - + along with this program. If not, see . */ +#include #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)); +#include +#include +#include +#include +#include +#include +#include -FILE *finput = NULL; - -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 @@ -42,60 +41,60 @@ 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; -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; - + 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; + /*-----------------------------------------------------------------. | 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; } @@ -109,9 +108,10 @@ xfopen (const char *name, const char *mode) { 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 (), + _("%s: cannot open"), quotearg_colon (name)); return ptr; } @@ -120,109 +120,45 @@ xfopen (const char *name, const char *mode) | 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, _("input/output error")); - return result; + if (fclose (ptr) != 0) + error (EXIT_FAILURE, get_errno (), _("cannot close file")); } - + /*------------------------------------------------------------------. -| 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; -} - - -/*----------------------------------------------------------------. -| 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 (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'); + } } -/* 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) { @@ -230,13 +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. @@ -245,7 +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 = @@ -264,130 +201,195 @@ 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 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 = sizeof (TAB_EXT) - 1; + if (dottablen < baselen + && STRPREFIX_LIT (TAB_EXT, *ext - dottablen)) + *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); - - /* The full base name goes up the EXT, excluding it. */ - full_base_name = - xstrndup (spec_outfile, - (strlen (spec_outfile) - (ext ? strlen (ext) : 0))); + file_name_split (spec_outfile, &base, &tab, &ext); + dir_prefix = xstrndup (spec_outfile, base - spec_outfile); - /* The short base name goes up to TAB, excluding it. */ - short_base_name = - xstrndup (spec_outfile, - (strlen (spec_outfile) - - (tab ? strlen (tab) : (ext ? strlen (ext) : 0)))); + /* ALL_BUT_EXT goes up the EXT, excluding it. */ + all_but_ext = + xstrndup (spec_outfile, + (strlen (spec_outfile) - (ext ? strlen (ext) : 0))); - if (tab) - output_infix = xstrndup (tab, - (strlen (tab) - (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)))); if (ext) - compute_exts_from_src (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/bar.yy' => `bar'. */ - filename_split (infile, &base, &tab, &ext); - short_base_name = - 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); - - /* Computes the extensions from the grammar file name. */ - filename_split (infile, &base, &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); } } -/*-------------------------------------------------------. -| 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)); + + if (defines_flag) + { + if (! 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, ".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); + } - /* It the defines filename if not given, we create it. */ - if (!spec_defines_file) - spec_defines_file = stringappend (full_base_name, header_extension); + if (report_flag) + { + if (!spec_verbose_file) + spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT); + output_file_name_check (&spec_verbose_file); + } - /* It the graph filename if not given, we create it. */ - if (!spec_graph_file) - spec_graph_file = stringappend (short_base_name, ".vcg"); + free (all_but_tab_ext); + free (src_extension); + free (header_extension); +} - spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT); +void +output_file_name_check (char **file_name) +{ + bool conflict = false; + if (STREQ (*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 (STREQ (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); }