129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/* $Header: /usr/cvsroot/target/src/wrn/wm/demo/lib/parse.c,v 1.2 2001/11/08 15:56:24 tneale Exp $ */
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/*
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* Copyright (C) 1999-2005 Wind River Systems, Inc.
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* All rights reserved. Provided under license only.
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* Distribution or other use of this software is only
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* permitted pursuant to the terms of a license agreement
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* from Wind River Systems (and is otherwise prohibited).
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* Refer to that license agreement for terms of use.
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*/
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/****************************************************************************
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* Copyright 1993-1997 Epilogue Technology Corporation.
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* Copyright 1998 Integrated Systems, Inc.
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* All rights reserved.
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****************************************************************************/
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/*
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* $Log: parse.c,v $
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* Revision 1.2 2001/11/08 15:56:24 tneale
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* Updated for newest file layout
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*
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* Revision 1.1.1.1 2001/11/05 17:48:42 tneale
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* Tornado shuffle
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*
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* Revision 2.7 2001/01/19 22:23:48 paul
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* Update copyright.
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*
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* Revision 2.6 2000/03/17 00:12:42 meister
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* Update copyright message
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*
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* Revision 2.5 1999/04/26 19:05:01 sra
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* Fix a few minor warnings, fix a few Solaris-specific problems in the
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* demo code.
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*
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* Revision 2.4 1998/02/25 04:57:29 sra
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* Update copyrights.
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*
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* Revision 2.3 1997/03/20 06:53:02 sra
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* DFARS-safe copyright text. Zap!
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*
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* Revision 2.2 1997/02/25 10:58:16 sra
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* Update copyright notice, dust under the bed.
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*
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* Revision 2.1 1996/03/22 10:05:39 sra
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* Update copyrights prior to Attache 3.2 release.
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*
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* Revision 2.0 1995/05/10 22:38:15 sra
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* Attache release 3.0.
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*
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* Revision 1.3 1995/01/06 00:52:48 sra
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* Update copyright notice for 2.1 release.
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*
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* Revision 1.2 1993/07/29 04:28:22 sra
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* Add copyright notice.
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*
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*/
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/* [clearcase]
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modification history
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-------------------
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01a,19apr05,job update copyright notices
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*/
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/*
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* This is a hacked up version of Bridgham's parse_line() function.
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*/
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#include <ctype.h>
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#include <wrn/wm/demo/parse.h>
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/*
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* Backslash handling. Generates one character, shuffles
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* remaining string down appropriately to close up.
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*/
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static void backslash(register char *p1)
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{
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register char *p2 = p1 + 1;
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if (*p2 >= '0' && *p2 <= '9') { /* octal digits */
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*p1 = (char) (*p2++ - '0');
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while (p2 <= p1 + 3 && *p2 >= '0' && *p2 <= '9')
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*p1 = (char) ((*p1 * 8) + (*p2++ - '0'));
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p1++;
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} else switch (*p2) {
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case 'a': *p2 = '\007'; break; /* bell */
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case 'b': *p2 = '\010'; break; /* backspace */
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case 'e': *p2 = '\033'; break; /* escape */
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case 'f': *p2 = '\014'; break; /* formfeed */
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case 'n': *p2 = '\012'; break; /* linefeed */
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case 'r': *p2 = '\015'; break; /* carriage return */
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case 't': *p2 = '\011'; break; /* tab */
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}
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while ((*p1++ = *p2++) != '\0'); /* and copy the line down */
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}
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/*
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* Parses a line into argc and argv, returns argc.
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* Doublequote and backslash do the obvious quoting things.
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*/
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int parse_line(char *line, char *argv[], int max_args)
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{
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int argc = 0, quoting = 0;
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for (;;) {
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while (isspace((int) *line))
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line++;
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switch (*line) {
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case '\0': return argc;
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case '\"': quoting = 1; line++; break;
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}
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if (argc >= max_args)
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return -1;
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argv[argc++] = line;
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while (quoting || !isspace((int) *line))
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switch (*line) {
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case '\0': return (quoting ? -1 : argc);
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case '\"': quoting = 0; *line = ' '; continue;
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case '\\': backslash(line); line++; continue;
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default: line++; continue;
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}
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*line++ = '\0';
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}
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}
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