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| -rw-r--r-- | builtins/test.def | 159 |
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diff --git a/builtins/test.def b/builtins/test.def new file mode 100644 index 0000000..bd9a203 --- /dev/null +++ b/builtins/test.def @@ -0,0 +1,159 @@ +This file is test.def, from which is created test.c. +It implements the builtin "test" in Bash. + +Copyright (C) 1987-2015 Free Software Foundation, Inc. + +This file is part of GNU Bash, the Bourne Again SHell. + +Bash 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. + +Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>. + +$PRODUCES test.c + +$BUILTIN test +$FUNCTION test_builtin +$SHORT_DOC test [expr] +Evaluate conditional expression. + +Exits with a status of 0 (true) or 1 (false) depending on +the evaluation of EXPR. Expressions may be unary or binary. Unary +expressions are often used to examine the status of a file. There +are string operators and numeric comparison operators as well. + +The behavior of test depends on the number of arguments. Read the +bash manual page for the complete specification. + +File operators: + + -a FILE True if file exists. + -b FILE True if file is block special. + -c FILE True if file is character special. + -d FILE True if file is a directory. + -e FILE True if file exists. + -f FILE True if file exists and is a regular file. + -g FILE True if file is set-group-id. + -h FILE True if file is a symbolic link. + -L FILE True if file is a symbolic link. + -k FILE True if file has its `sticky' bit set. + -p FILE True if file is a named pipe. + -r FILE True if file is readable by you. + -s FILE True if file exists and is not empty. + -S FILE True if file is a socket. + -t FD True if FD is opened on a terminal. + -u FILE True if the file is set-user-id. + -w FILE True if the file is writable by you. + -x FILE True if the file is executable by you. + -O FILE True if the file is effectively owned by you. + -G FILE True if the file is effectively owned by your group. + -N FILE True if the file has been modified since it was last read. + + FILE1 -nt FILE2 True if file1 is newer than file2 (according to + modification date). + + FILE1 -ot FILE2 True if file1 is older than file2. + + FILE1 -ef FILE2 True if file1 is a hard link to file2. + +String operators: + + -z STRING True if string is empty. + + -n STRING + STRING True if string is not empty. + + STRING1 = STRING2 + True if the strings are equal. + STRING1 != STRING2 + True if the strings are not equal. + STRING1 < STRING2 + True if STRING1 sorts before STRING2 lexicographically. + STRING1 > STRING2 + True if STRING1 sorts after STRING2 lexicographically. + +Other operators: + + -o OPTION True if the shell option OPTION is enabled. + -v VAR True if the shell variable VAR is set. + -R VAR True if the shell variable VAR is set and is a name + reference. + ! EXPR True if expr is false. + EXPR1 -a EXPR2 True if both expr1 AND expr2 are true. + EXPR1 -o EXPR2 True if either expr1 OR expr2 is true. + + arg1 OP arg2 Arithmetic tests. OP is one of -eq, -ne, + -lt, -le, -gt, or -ge. + +Arithmetic binary operators return true if ARG1 is equal, not-equal, +less-than, less-than-or-equal, greater-than, or greater-than-or-equal +than ARG2. + +Exit Status: +Returns success if EXPR evaluates to true; fails if EXPR evaluates to +false or an invalid argument is given. +$END + +$BUILTIN [ +$DOCNAME test_bracket +$FUNCTION test_builtin +$SHORT_DOC [ arg... ] +Evaluate conditional expression. + +This is a synonym for the "test" builtin, but the last argument must +be a literal `]', to match the opening `['. +$END + +#include <config.h> + +#if defined (HAVE_UNISTD_H) +# ifdef _MINIX +# include <sys/types.h> +# endif +# include <unistd.h> +#endif + +#include "../bashansi.h" +#include "../bashintl.h" + +#include "../shell.h" +#include "../execute_cmd.h" +#include "../test.h" +#include "common.h" + +/* TEST/[ builtin. */ +int +test_builtin (list) + WORD_LIST *list; +{ + char **argv; + int argc, result; + + /* We let Matthew Bradburn and Kevin Braunsdorf's code do the + actual test command. So turn the list of args into an array + of strings, since that is what their code wants. */ + if (list == 0) + { + if (this_command_name[0] == '[' && !this_command_name[1]) + { + builtin_error (_("missing `]'")); + return (EX_BADUSAGE); + } + + return (EXECUTION_FAILURE); + } + + argv = make_builtin_argv (list, &argc); + result = test_command (argc, argv); + free ((char *)argv); + + return (result); +} |