mirror of
https://https.git.savannah.gnu.org/git/m4.git
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2f49d755e5
* m4/m4module.h (M4BUILTIN_ENTRY): New convenience macro. (M4_BUILTIN_GROKS_MACRO): Rename... (M4_BUILTIN_FLATTEN_ARGS): ...and invert sense. (m4_symbol_value_groks_macro, m4_symbol_groks_macro): Likewise... (m4_symbol_value_flatten_args, m4_symbol_flatten_args): ...to this. * m4/m4private.h (VALUE_MACRO_ARGS_BIT) (m4_symbol_value_groks_macro): Likewise... (VALUE_FLATTEN_ARGS_BIT, m4_symbol_value_flatten_args): ...to this. * m4/symtab.c (m4_symbol_value_groks_macro): Likewise... (m4_symbol_value_flatten_args): ...to this. * m4/macro.c (collect_arguments): Accomodate changed sense. * m4/module.c (m4__module_open): Require arguments if flattening is requested. * m4/input.c (m4_push_string_finish): For now, flatten all builtins pushed as back-references. * modules/gnu.c (m4_builtin_table, builtin): Adjust all clients. * modules/import.c (m4_builtin_table): Likewise. * modules/load.c (m4_builtin_table): Likewise. * modules/modtest.c (m4_builtin_table): Likewise. * modules/mpeval.c (m4_builtin_table): Likewise. * modules/perl.c (m4_builtin_table): Likewise. * modules/shadow.c (m4_builtin_table): Likewise. * modules/stdlib.c (m4_builtin_table): Likewise. * modules/time.c (m4_builtin_table): Likewise. * modules/m4.c (m4_builtin_table): Likewise. (mkstemp): Undo #undef hack from 2006-10-23, now that macro names are stringized without preprocessor expansion. * doc/m4.texinfo (Defn): Update comments to match reality. (Debuglen): Update test now that user macros pass builtin tokens. Signed-off-by: Eric Blake <ebb9@byu.net>
299 lines
6.6 KiB
C
299 lines
6.6 KiB
C
/* GNU m4 -- A simple macro processor
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Copyright (C) 1999, 2000, 2001, 2006, 2007, 2008 Free Software
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Foundation, Inc.
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This file is part of GNU M4.
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GNU M4 is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GNU M4 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <pwd.h>
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#if TM_IN_SYS_TIME
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# include <sys/time.h>
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#else
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# include <time.h>
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#endif
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#include <sys/utsname.h>
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/* Build using only the exported interfaces, unless NDEBUG is set, in
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which case use private symbols to speed things up as much as possible. */
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#ifndef NDEBUG
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# include <m4/m4module.h>
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#else
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# include "m4private.h"
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#endif
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/* Rename exported symbols for dlpreload()ing. */
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#define m4_builtin_table stdlib_LTX_m4_builtin_table
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/* function macros blind side minargs maxargs */
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#define builtin_functions \
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BUILTIN (getcwd, false, false, false, 0, 0 ) \
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BUILTIN (getenv, false, true, false, 1, 1 ) \
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BUILTIN (getlogin, false, false, false, 0, 0 ) \
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BUILTIN (getpid, false, false, false, 0, 0 ) \
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BUILTIN (getppid, false, false, false, 0, 0 ) \
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BUILTIN (getuid, false, false, false, 0, 0 ) \
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BUILTIN (getpwnam, false, true, false, 1, 1 ) \
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BUILTIN (getpwuid, false, true, false, 1, 1 ) \
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BUILTIN (hostname, false, false, false, 0, 0 ) \
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BUILTIN (rand, false, false, false, 0, 0 ) \
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BUILTIN (srand, false, false, false, 0, 1 ) \
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BUILTIN (setenv, false, true, false, 2, 3 ) \
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BUILTIN (unsetenv, false, true, false, 1, 1 ) \
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BUILTIN (uname, false, false, false, 0, 0 ) \
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#define BUILTIN(handler, macros, blind, side, min, max) M4BUILTIN (handler);
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builtin_functions
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#undef BUILTIN
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m4_builtin m4_builtin_table[] =
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{
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#define BUILTIN(handler, macros, blind, side, min, max) \
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M4BUILTIN_ENTRY (handler, #handler, macros, blind, side, min, max)
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builtin_functions
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#undef BUILTIN
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{ NULL, NULL, 0, 0, 0 },
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};
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/**
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* getcwd()
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**/
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M4BUILTIN_HANDLER (getcwd)
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{
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/* FIXME - Use gnulib module for arbitrary-length cwd. */
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char buf[1024];
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char *bp;
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bp = getcwd (buf, sizeof buf);
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if (bp != NULL) /* in case of error return null string */
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m4_shipout_string (context, obs, buf, SIZE_MAX, false);
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}
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/**
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* getenv(NAME)
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**/
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M4BUILTIN_HANDLER (getenv)
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{
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char *env;
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env = getenv (M4ARG (1));
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if (env != NULL)
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m4_shipout_string (context, obs, env, SIZE_MAX, false);
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}
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/**
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* setenv(NAME, VALUE, [OVERWRITE])
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**/
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M4BUILTIN_HANDLER (setenv)
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{
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int overwrite = 1;
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if (argc >= 4)
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if (!m4_numeric_arg (context, M4ARG (0), M4ARG (3), &overwrite))
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return;
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#if HAVE_SETENV
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setenv (M4ARG (1), M4ARG (2), overwrite);
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#else
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#if HAVE_PUTENV
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if (!overwrite && getenv (M4ARG (1)) != NULL)
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return;
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assert (obstack_object_size (obs) == 0);
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obstack_grow (obs, M4ARG (1), M4ARGLEN (1));
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obstack_1grow (obs, '=');
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obstack_grow0 (obs, M4ARG (2), M4ARGLEN (2));
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{
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char *env = (char *) obstack_finish (obs);
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putenv (env);
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}
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#endif /* HAVE_PUTENV */
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#endif /* HAVE_SETENV */
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}
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/**
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* unsetenv(NAME)
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**/
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M4BUILTIN_HANDLER (unsetenv)
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{
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#if HAVE_UNSETENV
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unsetenv (M4ARG (1));
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#endif /* HAVE_UNSETENV */
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}
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/**
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* getlogin()
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**/
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M4BUILTIN_HANDLER (getlogin)
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{
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char *login;
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login = getlogin ();
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if (login != NULL)
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m4_shipout_string (context, obs, login, SIZE_MAX, false);
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}
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/**
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* getpid()
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**/
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M4BUILTIN_HANDLER (getpid)
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{
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m4_shipout_int (obs, getpid ());
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}
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/**
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* getppid()
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**/
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M4BUILTIN_HANDLER (getppid)
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{
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m4_shipout_int (obs, getppid ());
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}
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/**
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* getpwnam(NAME)
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**/
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M4BUILTIN_HANDLER (getpwnam)
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{
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struct passwd *pw;
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pw = getpwnam (M4ARG (1));
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if (pw != NULL)
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{
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m4_shipout_string (context, obs, pw->pw_name, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_passwd, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_int (obs, pw->pw_uid);
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obstack_1grow (obs, ',');
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m4_shipout_int (obs, pw->pw_gid);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_gecos, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_dir, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_shell, SIZE_MAX, true);
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}
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}
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/**
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* getpwuid(UID)
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**/
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M4BUILTIN_HANDLER (getpwuid)
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{
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struct passwd *pw;
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int uid;
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if (!m4_numeric_arg (context, M4ARG (0), M4ARG (1), &uid))
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return;
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pw = getpwuid (uid);
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if (pw != NULL)
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{
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m4_shipout_string (context, obs, pw->pw_name, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_passwd, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_int (obs, pw->pw_uid);
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obstack_1grow (obs, ',');
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m4_shipout_int (obs, pw->pw_gid);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_gecos, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_dir, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, pw->pw_shell, SIZE_MAX, true);
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}
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}
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/**
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* hostname()
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**/
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M4BUILTIN_HANDLER (hostname)
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{
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char buf[1024];
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if (gethostname (buf, sizeof buf) < 0)
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return;
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m4_shipout_string (context, obs, buf, SIZE_MAX, false);
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}
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/**
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* rand()
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**/
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M4BUILTIN_HANDLER (rand)
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{
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m4_shipout_int (obs, rand ());
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}
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/**
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* srand()
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**/
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M4BUILTIN_HANDLER (srand)
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{
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int seed;
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if (argc == 1)
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seed = time (0L) * getpid ();
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else
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{
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if (!m4_numeric_arg (context, M4ARG (0), M4ARG (1), &seed))
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return;
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}
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srand (seed);
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}
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/**
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* uname()
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**/
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M4BUILTIN_HANDLER (uname)
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{
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struct utsname ut;
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if (uname (&ut) == 0)
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{
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m4_shipout_string (context, obs, ut.sysname, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, ut.nodename, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, ut.release, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, ut.version, SIZE_MAX, true);
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obstack_1grow (obs, ',');
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m4_shipout_string (context, obs, ut.machine, SIZE_MAX, true);
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}
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}
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/**
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* getuid()
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**/
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M4BUILTIN_HANDLER (getuid)
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{
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m4_shipout_int (obs, getuid ());
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}
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