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Diffstat (limited to 'bin/sh/parser.h')
| -rw-r--r-- | bin/sh/parser.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/bin/sh/parser.h b/bin/sh/parser.h new file mode 100644 index 000000000000..c75b138af48c --- /dev/null +++ b/bin/sh/parser.h @@ -0,0 +1,85 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)parser.h 8.3 (Berkeley) 5/4/95 + * $FreeBSD$ + */ + +/* control characters in argument strings */ +#define CTLESC '\300' +#define CTLVAR '\301' +#define CTLENDVAR '\371' +#define CTLBACKQ '\372' +#define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ +/* CTLBACKQ | CTLQUOTE == '\373' */ +#define CTLARI '\374' +#define CTLENDARI '\375' +#define CTLQUOTEMARK '\376' +#define CTLQUOTEEND '\377' /* only for ${v+-...} */ + +/* variable substitution byte (follows CTLVAR) */ +#define VSTYPE 0x0f /* type of variable substitution */ +#define VSNUL 0x10 /* colon--treat the empty string as unset */ +#define VSLINENO 0x20 /* expansion of $LINENO, the line number \ + follows immediately */ +#define VSQUOTE 0x80 /* inside double quotes--suppress splitting */ + +/* values of VSTYPE field */ +#define VSNORMAL 0x1 /* normal variable: $var or ${var} */ +#define VSMINUS 0x2 /* ${var-text} */ +#define VSPLUS 0x3 /* ${var+text} */ +#define VSQUESTION 0x4 /* ${var?message} */ +#define VSASSIGN 0x5 /* ${var=text} */ +#define VSTRIMLEFT 0x6 /* ${var#pattern} */ +#define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */ +#define VSTRIMRIGHT 0x8 /* ${var%pattern} */ +#define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */ +#define VSLENGTH 0xa /* ${#var} */ +#define VSERROR 0xb /* Syntax error, issue when expanded */ + + +/* + * NEOF is returned by parsecmd when it encounters an end of file. It + * must be distinct from NULL. + */ +#define NEOF ((union node *)-1) +extern int whichprompt; /* 1 == PS1, 2 == PS2 */ +extern const char *const parsekwd[]; + + +union node *parsecmd(int); +union node *parsewordexp(void); +void forcealias(void); +void fixredir(union node *, const char *, int); +int goodname(const char *); +int isassignment(const char *); +char *getprompt(void *); +const char *expandstr(const char *); |