X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ae4048011562c250d2f3c96687422d99a38745ce..3ea5f0ec817fe9d8a7384334f7d537dce66af0f4:/src/files.c diff --git a/src/files.c b/src/files.c index 5f94bd00..abe86463 100644 --- a/src/files.c +++ b/src/files.c @@ -1,5 +1,7 @@ -/* Open and close files for bison, - Copyright 1984, 1986, 1989, 1992, 2000, 2001 Free Software Foundation, Inc. +/* 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. @@ -15,25 +17,29 @@ 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 "system.h" -#include "getargs.h" + +#include +#include +#include +#include + +#include "complain.h" #include "files.h" +#include "getargs.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)); +const char *base_name (char const *name); FILE *finput = NULL; -struct obstack action_obstack; -struct obstack attrs_obstack; -struct obstack output_obstack; +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 @@ -50,96 +56,35 @@ char *spec_graph_file = NULL; /* for -g. */ char *spec_defines_file = NULL; /* for --defines. */ char *parser_file_name = NULL; -char *infile = NULL; -char *attrsfile = NULL; +uniqstr grammar_file = NULL; +uniqstr current_file = NULL; static char *full_base_name = NULL; + +/* Prefix used to generate output file names. */ char *short_base_name = NULL; /* 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; - -/* Should we insert '.tab' in yacc-compatible parsers? */ -int tab_extension = 0; - -/*--------------------------. -| 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; -} - - /*-----------------------------------------------------------------. | 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; } - -/*-----------------------------------------------------------------. -| Computes the macro name used to avoid double inclusion in the | -| header of the parser and store it in header_macro_name. Be sure | -| to produce valid CPP names (don't start with digit, remain | -| alphanumerical + underscore). | -`-----------------------------------------------------------------*/ - -char * -compute_header_macro (void) -{ - const char *prefix = "BISON_"; - char *macro_name, *cp; - - if (spec_defines_file) - { - macro_name = XMALLOC (char, - strlen (prefix) + - strlen (spec_defines_file) + 1); - cp = stpcpy (macro_name, prefix); - cp = stpcpy (cp, spec_defines_file); - } - else - { - macro_name = XMALLOC (char, - strlen (prefix) + - strlen (full_base_name) + - strlen (header_extension) + 1); - cp = stpcpy (macro_name, prefix); - cp = stpcpy (cp, full_base_name); - cp = stpcpy (cp, header_extension); - } - - for (cp = macro_name; *cp; ++cp) - if (islower (*cp)) - *cp = toupper (*cp); - else if (!isalnum (*cp)) - *cp = '_'; - - return macro_name; -} - - /*-----------------------------------------------------------------. | Try to open file NAME with mode MODE, and print an error message | | if fails. | @@ -150,9 +95,9 @@ 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 (), _("cannot open file `%s'"), name); return ptr; } @@ -161,78 +106,23 @@ 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; - - result = fclose (ptr); - if (result == EOF) - error (2, errno, _("cannot close file")); - - return result; -} + return; + if (ferror (ptr)) + error (EXIT_FAILURE, 0, _("I/O error")); -/*------------------------------------------------------------------. -| Return the path to the skeleton which locaction might be given in | -| ENVVAR, otherwise return SKELETON_NAME. | -`------------------------------------------------------------------*/ - -const char * -skeleton_find (const char *envvar, const char *skeleton_name) -{ - const char *res = getenv (envvar); - -#if defined (MSDOS) || defined (_WIN32) - 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. */ - const char *cp = getenv ("INIT"); - 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; + if (fclose (ptr) != 0) + error (EXIT_FAILURE, get_errno (), _("cannot close file")); } -/*----------------------------------------------------------------. -| Compute BASE_NAME, SHORT_BASE_NAME and output files extensions. | -`----------------------------------------------------------------*/ +/*---------------------------------------------------------------------. +| 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. */ @@ -240,9 +130,7 @@ 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) @@ -253,28 +141,7 @@ tr (const char *in, char from, char to) return (temp); } -/* Gets the extension index in FILENAME. Returns 0 if fails to - find an extension. */ -static int -get_extension_index (const char *filename) -{ - int len; - - len = strlen (filename); - - if (filename[len-- - 1] == '.') - return (0); - - while ((len > 0) && (filename[len - 1] != '.')) - if (filename[len - 1] == '/') - return (0); - else - len--; - - return (len - 1); -} - -/* Computes extensions from the grammar file extension. */ +/* Compute extensions from the grammar file extension. */ static void compute_exts_from_gf (const char *ext) { @@ -284,7 +151,7 @@ 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) { @@ -335,13 +202,17 @@ filename_split (const char *filename, *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) > 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; + } } @@ -351,36 +222,30 @@ static void compute_base_names (void) { const char *base, *tab, *ext; - size_t base_length; - size_t short_base_length; - size_t ext_index; /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c), - BASE_NAME and SHORT_BASE_NAME are `foo'. + FULL_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'. + If --output=foo.tab.c was specified, FULL_BASE_NAME is `foo.tab' + and SHORT_BASE_NAME is `foo'. The precise -o name will be used for FTABLE. For other output files, remove the ".c" or ".tab.c" suffix. */ if (spec_outfile) { - const char *cp; 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))); + /* 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)))); - /* Do we have a tab part? */ - tab_extension = !!tab; - if (ext) compute_exts_from_src (ext); } @@ -405,38 +270,37 @@ compute_base_names (void) else { /* Otherwise, the short base name is computed from the input - grammar: `foo.yy' => `foo'. */ - filename_split (infile, &base, &tab, &ext); + grammar: `foo/bar.yy' => `bar'. */ + filename_split (grammar_file, &base, &tab, &ext); short_base_name = - xstrndup (infile, - (strlen (infile) - (ext ? strlen (ext) : 0))); + xstrndup (base, + (strlen (base) - (ext ? strlen (ext) : 0))); } - /* In these cases, always append `.tab'. */ - tab_extension = 1; - full_base_name = XMALLOC (char, - strlen (short_base_name) - + strlen (EXT_TAB) + 1); - stpcpy (stpcpy (full_base_name, short_base_name), EXT_TAB); + full_base_name = xmalloc (strlen (short_base_name) + + strlen (TAB_EXT) + 1); + stpcpy (stpcpy (full_base_name, short_base_name), TAB_EXT); - /* Computes the extensions from the grammar file name. */ - filename_split (infile, &base, &tab, &ext); - if (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); } } -/*-------------------------------------------------------. -| 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; - parser_file_name = - spec_outfile ? spec_outfile : stringappend (full_base_name, src_extension); + compute_base_names (); /* If not yet done. */ if (!src_extension) @@ -444,15 +308,31 @@ compute_output_file_names (void) if (!header_extension) header_extension = ".h"; - /* It the defines filename if not given, we create it. */ - if (!spec_defines_file) - spec_defines_file = stringappend (full_base_name, header_extension); + name[names++] = parser_file_name = + spec_outfile ? spec_outfile : concat2 (full_base_name, src_extension); - /* It the graph filename if not given, we create it. */ - if (!spec_graph_file) - spec_graph_file = stringappend (short_base_name, ".vcg"); + if (defines_flag) + { + if (! spec_defines_file) + spec_defines_file = concat2 (full_base_name, header_extension); + name[names++] = spec_defines_file; + } - spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT); + if (graph_flag) + { + if (! spec_graph_file) + spec_graph_file = concat2 (short_base_name, ".vcg"); + name[names++] = spec_graph_file; + } + + if (report_flag) + { + spec_verbose_file = concat2 (short_base_name, OUTPUT_EXT); + name[names++] = spec_verbose_file; + } - attrsfile = stringappend (short_base_name, EXT_STYPE_H); + 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])); }