X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/1bb2bd75f0185ca53c92f1c63cdc0b5ceef3f1f2..026816664ff8283a55f91915843a8ff0ac5cf86c:/src/files.c?ds=sidebyside diff --git a/src/files.c b/src/files.c index 0499a353..76aa7fe3 100644 --- a/src/files.c +++ b/src/files.c @@ -1,7 +1,7 @@ /* Open and close files for Bison. - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, - 2005, 2006, 2007 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. @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -33,7 +34,7 @@ #include "getargs.h" #include "gram.h" -/* 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 @@ -57,20 +58,20 @@ 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/'. */ char *all_but_ext; static char *all_but_tab_ext; @@ -78,7 +79,7 @@ char *dir_prefix; /* C source file extension (the parser source). */ static char *src_extension = NULL; -/* Header file extension (if option ``-d'' is specified). */ +/* Header file extension (if option '`-d'' is specified). */ static char *header_extension = NULL; /*-----------------------------------------------------------------. @@ -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; } @@ -125,31 +127,34 @@ 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. | `------------------------------------------------------------------*/ -/* In the string S, replace all characters FROM by TO. */ -static void -tr (char *s, char from, char to) -{ - for (; *s; s++) - if (*s == from) - *s = to; -} - /* Compute extensions from the grammar file extension. */ static void compute_exts_from_gf (const char *ext) { - if (strcmp (ext, ".y") == 0) + if (STREQ (ext, ".y")) { src_extension = xstrdup (language->src_extension); header_extension = xstrdup (language->header_extension); @@ -186,7 +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. @@ -209,7 +214,7 @@ 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 = last_component (file_name); @@ -217,16 +222,15 @@ file_name_split (const char *file_name, *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; } } @@ -248,42 +252,44 @@ 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 = xstrdup (""); - all_but_tab_ext = xstrdup ("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 = xstrdup (""); - all_but_tab_ext = - xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0))); - } + { + /* 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); @@ -292,7 +298,7 @@ compute_file_name_parts (void) /* Compute the extensions from the grammar file name. */ if (ext && !yacc_flag) - compute_exts_from_gf (ext); + compute_exts_from_gf (ext); } } @@ -319,28 +325,28 @@ compute_output_file_names (void) if (defines_flag) { if (! spec_defines_file) - spec_defines_file = concat2 (all_but_ext, header_extension); + 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); + 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); + spec_xml_file = concat2 (all_but_tab_ext, ".xml"); + output_file_name_check (&spec_xml_file); } if (report_flag) { if (!spec_verbose_file) spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT); - output_file_name_check (spec_verbose_file); + output_file_name_check (&spec_verbose_file); } free (all_but_tab_ext); @@ -349,16 +355,37 @@ compute_output_file_names (void) } void -output_file_name_check (char const *file_name) +output_file_name_check (char **file_name) { - { - 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)); - } - file_names = xnrealloc (file_names, ++file_names_count, sizeof *file_names); - file_names[file_names_count-1] = xstrdup (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); + } } void