X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/e63ee1f16c6b8633ed7385d1e7f2531b5dfda8f5..47671055438197794c88a6f7fb90acbc19fe413b:/src/files.c diff --git a/src/files.c b/src/files.c index da4c36b1..f3bb0f9c 100644 --- a/src/files.c +++ b/src/files.c @@ -1,5 +1,6 @@ -/* Open and close files for bison, - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002 +/* Open and close files for Bison. + + Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -16,21 +17,23 @@ 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. */ - + Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. */ +#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 (char const *name); +#include +#include +#include +#include -FILE *finput = NULL; +#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; @@ -42,60 +45,55 @@ 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 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 *infile = NULL; +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'. -/* Prefix used to generate output file names. */ -char *short_base_name = 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'. -/* Infix used to generate output file names (i.e., `.tab', or `_tab', - or `'). */ -char *output_infix = NULL; + If --output was not specified but --file-prefix=dir/foo was specified, + ALL_BUT_EXT = `foo.tab' and ALL_BUT_TAB_EXT = `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 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 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; -} + If neither --output nor --file was specified, DIR_PREFIX is the + empty string (meaning the current directory); otherwise it is + `dir/'. */ +static char const *all_but_ext; +static char const *all_but_tab_ext; +char const *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; + /*-----------------------------------------------------------------. | 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 +107,9 @@ xfopen (const char *name, const char *mode) { FILE *ptr; - ptr = fopen (name, mode); + ptr = fopen_safer (name, mode); if (!ptr) - error (EXIT_FAILURE, errno, _("cannot open file `%s'"), name); + error (EXIT_FAILURE, get_errno (), _("cannot open file `%s'"), name); return ptr; } @@ -130,13 +128,13 @@ xfclose (FILE *ptr) error (EXIT_FAILURE, 0, _("I/O error")); if (fclose (ptr) != 0) - error (EXIT_FAILURE, errno, _("cannot close file")); + error (EXIT_FAILURE, get_errno (), _("cannot close file")); } -/*----------------------------------------------------------------. -| Compute BASE_NAME, SHORT_BASE_NAME and output files extensions. | -`----------------------------------------------------------------*/ +/*------------------------------------------------------------------. +| 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. */ @@ -144,9 +142,7 @@ static char * 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) @@ -157,7 +153,7 @@ tr (const char *in, char from, char to) 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) { @@ -167,7 +163,7 @@ 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) { @@ -180,8 +176,8 @@ compute_exts_from_src (const char *ext) } -/* 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. @@ -190,7 +186,7 @@ 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 = @@ -209,113 +205,104 @@ 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 = base_name (file_name); /* Look for the extension, i.e., look for the last dot. */ *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; + } } -/* 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); + 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)))); - if (tab) - output_infix = xstrndup (tab, - (strlen (tab) - (ext ? strlen (ext) : 0))); - 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 (grammar_file, base - grammar_file); + 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 = ""; + all_but_tab_ext = "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 (infile, &base, &tab, &ext); - short_base_name = - xstrndup (base, - (strlen (base) - (ext ? strlen (ext) : 0))); + dir_prefix = ""; + all_but_tab_ext = + xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0))); } - /* In these cases, always append `.tab'. */ - output_infix = xstrdup (EXT_TAB); + all_but_ext = concat2 (all_but_tab_ext, TAB_EXT); - 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); + /* Compute the extensions from the grammar file name. */ 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) { - compute_base_names (); + char const *name[4]; + int i; + int j; + int names = 0; + + compute_file_name_parts (); /* If not yet done. */ if (!src_extension) @@ -323,16 +310,31 @@ compute_output_file_names (void) if (!header_extension) header_extension = ".h"; - parser_file_name = - spec_outfile ? spec_outfile : stringappend (full_base_name, src_extension); + name[names++] = parser_file_name = + spec_outfile ? 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; + } - /* It the defines filename if not given, we create it. */ - if (!spec_defines_file) - spec_defines_file = stringappend (full_base_name, header_extension); + if (graph_flag) + { + if (! spec_graph_file) + spec_graph_file = concat2 (all_but_tab_ext, ".vcg"); + name[names++] = spec_graph_file; + } - /* It the graph filename if not given, we create it. */ - if (!spec_graph_file) - spec_graph_file = stringappend (short_base_name, ".vcg"); + if (report_flag) + { + spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT); + name[names++] = spec_verbose_file; + } - spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT); + 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])); }