/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1982-2007 AT&T Knowledge Ventures * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Knowledge Ventures * * * * A copy of the License is available at * * http://www.opensource.org/licenses/cpl1.0.txt * * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * * * * Information and Software Systems Research * * AT&T Research * * Florham Park NJ * * * * David Korn * * * ***********************************************************************/ #pragma prototyped /* * tables for the test builin [[...]] and [...] */ #include #include "shtable.h" #include "test.h" /* * This is the list of binary test and [[...]] operators */ const Shtable_t shtab_testops[] = { "!=", TEST_SNE, "-a", TEST_AND, "-ef", TEST_EF, "-eq", TEST_EQ, "-ge", TEST_GE, "-gt", TEST_GT, "-le", TEST_LE, "-lt", TEST_LT, "-ne", TEST_NE, "-nt", TEST_NT, "-o", TEST_OR, "-ot", TEST_OT, "=", TEST_SEQ, "==", TEST_SEQ, "=~", TEST_REP, "<", TEST_SLT, ">", TEST_SGT, "]]", TEST_END, "", 0 }; const char sh_opttest[] = "[-1c?\n@(#)$Id: test (AT&T Research) 2003-03-18 $\n]" USAGE_LICENSE "[+NAME?test - evaluate expression]" "[+DESCRIPTION?\btest\b evaluates expressions and indicates its " "results based on the exit status. Option parsing is not " "performed so that all arguments, including \b--\b are processed " " as operands. The evaluation of the " "expression depends on the number of operands as follows:]{" "[+0?Evaluates to false.]" "[+1?True if argument is not an empty string.]" "[+2?If first operand is \b!\b, the result is True if the second " "operand an empty string. Otherwise, it is evaluated " "as one of the unary expressions defined below. If the " "unary operator is invalid and the second argument is \b--\b," "then the first argument is processed as an option argument.]" "[+3?If first operand is \b!\b, the result is True if the second " "and third operand evaluated as a unary expression is False. " "Otherwise, the three operands are evaluaged as one of the " "binary expressions listed below.]" "[+4?If first operand is \b!\b, the result is True if the next " "three operands are a valid binary expression that is False.]" "}" "[If any \afile\a is of the form \b/dev/fd/\b\an\a, then file descriptor " "\an\a is checked.]" "[+?Unary expressions can be one of the following:]{" "[+-a \afile\a?True if \afile\a exists, obsolete.]" "[+-b \afile\a?True if \afile\a exists and is a block special file.]" "[+-c \afile\a?True if \afile\a exists and is a character special " "file.]" "[+-d \afile\a?True if \afile\a exists and is a directory.]" "[+-e \afile\a?True if \afile\a exists.]" "[+-f \afile\a?True if \afile\a exists and is a regular file.]" "[+-g \afile\a?True if \afile\a exists and has its set-group-id bit " "set.]" "[+-h \afile\a?True if \afile\a exists and is a symbolic link.]" "[+-k \afile\a?True if \afile\a exists and has its sticky bit on.]" #if SHOPT_TEST_L "[+-l \afile\a?True if \afile\a exists and is a symbolic link.]" #endif "[+-n \astring\a?True if length of \astring\a is non-zero.]" "[+-o \aoption\a?True if the shell option \aoption\a is enabled.]" "[+-p \afile\a?True if \afile\a exists and is a pipe or fifo.]" "[+-r \afile\a?True if \afile\a exists and is readable.]" "[+-s \afile\a?True if \afile\a exists and has size > 0.]" "[+-t \afildes\a?True if file descriptor number \afildes\a is " "open and is associated with a terminal device.]" "[+-u \afile\a?True if \afile\a exists and has its set-user-id bit " "set.]" "[+-w \afile\a?True if \afile\a exists and is writable.]" "[+-x \afile\a?True if \afile\a exists and is executable. For a " "directory it means that it can be searched.]" "[+-z \astring\a?True if \astring\a is a zero length string.]" "[+-G \afile\a?True if \afile\a exists and group is the effective " "group id of the current process.]" "[+-L \afile\a?True if \afile\a exists and is a symbolic link.]" "[+-N \afile\a?True if \afile\a exists and has been modified since " "it was last read.]" "[+-O \afile\a?True if \afile\a exists and owner is the effective " "user id of the current process.]" "[+-S \afile\a?True if \afile\a exists and is a socket.]" "}" "[+?Binary expressions can be one of the following:]{" "[+\astring1\a = \astring2\a?True if \astring1\a is equal to " "\astring2\a.]" "[+\astring1\a == \astring2\a?True if \astring1\a is equal to " "\astring2\a.]" "[+\astring1\a != \astring2\a?True if \astring1\a is not equal to " "\astring2\a.]" "[+\anum1\a -eq \anum2\a?True if numerical value of \anum1\a is " "equal to \anum2\a.]" "[+\anum1\a -ne \anum2\a?True if numerical value of \anum1\a is not " "equal to \anum2\a.]" "[+\anum1\a -lt \anum2\a?True if numerical value of \anum1\a is less " "than \anum2\a.]" "[+\anum1\a -le \anum2\a?True if numerical value of \anum1\a is less " "than or equal to \anum2\a.]" "[+\anum1\a -gt \anum2\a?True if numerical value of \anum1\a is " "greater than \anum2\a.]" "[+\anum1\a -ge \anum2\a?True if numerical value of \anum1\a is " "greater than or equal to \anum2\a.]" "[+\afile1\a -nt \afile2\a?True if \afile1\a is newer than \afile2\a " "or \afile2\a does not exist.]" "[+\afile1\a -ot \afile2\a?True if \afile1\a is older than \afile2\a " "or \afile2\a does not exist.]" "[+\afile1\a -ef \afile2\a?True if \afile1\a is another name for " "\afile2\a. This will be true if \afile1\a is a hard link " "or a symbolic link to \afile2\a.]" "}" "\n" "\n[expression]\n" "\n" "[+EXIT STATUS?]{" "[+0?Indicates that the specified expression is True.]" "[+1?Indicates that the specified expression is False.]" "[+>1?An error occurred.]" "}" "[+SEE ALSO?\blet\b(1), \bexpr\b(1)]" ; const char test_opchars[] = "HLNSVOGCaeohrwxdcbfugk" #if SHOPT_TEST_L "l" #endif "psnzt"; const char e_argument[] = "argument expected"; const char e_missing[] = "%s missing"; const char e_badop[] = "%s: unknown operator"; const char e_tstbegin[] = "[[ ! "; const char e_tstend[] = " ]]\n";