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Diffstat (limited to 'main/editline/tokenizer.c')
-rw-r--r-- | main/editline/tokenizer.c | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/main/editline/tokenizer.c b/main/editline/tokenizer.c deleted file mode 100644 index f0de39bc9..000000000 --- a/main/editline/tokenizer.c +++ /dev/null @@ -1,397 +0,0 @@ -/* $NetBSD: tokenizer.c,v 1.10 2002/03/18 16:01:00 christos Exp $ */ - -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Christos Zoulas of Cornell University. - * - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - */ - -#include "config.h" -#if !defined(lint) && !defined(SCCSID) -#if 0 -static char sccsid[] = "@(#)tokenizer.c 8.1 (Berkeley) 6/4/93"; -#else -__RCSID("$NetBSD: tokenizer.c,v 1.10 2002/03/18 16:01:00 christos Exp $"); -#endif -#endif /* not lint && not SCCSID */ - -/* - * tokenize.c: Bourne shell like tokenizer - */ -#include <string.h> -#include <stdlib.h> -#include "tokenizer.h" - -typedef enum { - Q_none, Q_single, Q_double, Q_one, Q_doubleone -} quote_t; - -#define IFS "\t \n" - -#define TOK_KEEP 1 -#define TOK_EAT 2 - -#define WINCR 20 -#define AINCR 10 - -#define tok_malloc(a) malloc(a) -#define tok_free(a) free(a) -#define tok_realloc(a, b) realloc(a, b) - - -struct tokenizer { - char *ifs; /* In field separator */ - int argc, amax; /* Current and maximum number of args */ - char **argv; /* Argument list */ - char *wptr, *wmax; /* Space and limit on the word buffer */ - char *wstart; /* Beginning of next word */ - char *wspace; /* Space of word buffer */ - quote_t quote; /* Quoting state */ - int flags; /* flags; */ -}; - - -private void tok_finish(Tokenizer *); - - -/* tok_finish(): - * Finish a word in the tokenizer. - */ -private void -tok_finish(Tokenizer *tok) -{ - - *tok->wptr = '\0'; - if ((tok->flags & TOK_KEEP) || tok->wptr != tok->wstart) { - tok->argv[tok->argc++] = tok->wstart; - tok->argv[tok->argc] = NULL; - tok->wstart = ++tok->wptr; - } - tok->flags &= ~TOK_KEEP; -} - - -/* tok_init(): - * Initialize the tokenizer - */ -public Tokenizer * -tok_init(const char *ifs) -{ - Tokenizer *tok = (Tokenizer *) tok_malloc(sizeof(Tokenizer)); - - tok->ifs = strdup(ifs ? ifs : IFS); - tok->argc = 0; - tok->amax = AINCR; - tok->argv = (char **) tok_malloc(sizeof(char *) * tok->amax); - if (tok->argv == NULL) - return (NULL); - tok->argv[0] = NULL; - tok->wspace = (char *) tok_malloc(WINCR); - if (tok->wspace == NULL) - return (NULL); - tok->wmax = tok->wspace + WINCR; - tok->wstart = tok->wspace; - tok->wptr = tok->wspace; - tok->flags = 0; - tok->quote = Q_none; - - return (tok); -} - - -/* tok_reset(): - * Reset the tokenizer - */ -public void -tok_reset(Tokenizer *tok) -{ - - tok->argc = 0; - tok->wstart = tok->wspace; - tok->wptr = tok->wspace; - tok->flags = 0; - tok->quote = Q_none; -} - - -/* tok_end(): - * Clean up - */ -public void -tok_end(Tokenizer *tok) -{ - - tok_free((ptr_t) tok->ifs); - tok_free((ptr_t) tok->wspace); - tok_free((ptr_t) tok->argv); - tok_free((ptr_t) tok); -} - - - -/* tok_line(): - * Bourne shell like tokenizing - * Return: - * -1: Internal error - * 3: Quoted return - * 2: Unmatched double quote - * 1: Unmatched single quote - * 0: Ok - */ -public int -tok_line(Tokenizer *tok, const char *line, int *argc, const char ***argv) -{ - const char *ptr; - - for (;;) { - switch (*(ptr = line++)) { - case '\'': - tok->flags |= TOK_KEEP; - tok->flags &= ~TOK_EAT; - switch (tok->quote) { - case Q_none: - tok->quote = Q_single; /* Enter single quote - * mode */ - break; - - case Q_single: /* Exit single quote mode */ - tok->quote = Q_none; - break; - - case Q_one: /* Quote this ' */ - tok->quote = Q_none; - *tok->wptr++ = *ptr; - break; - - case Q_double: /* Stay in double quote mode */ - *tok->wptr++ = *ptr; - break; - - case Q_doubleone: /* Quote this ' */ - tok->quote = Q_double; - *tok->wptr++ = *ptr; - break; - - default: - return (-1); - } - break; - - case '"': - tok->flags &= ~TOK_EAT; - tok->flags |= TOK_KEEP; - switch (tok->quote) { - case Q_none: /* Enter double quote mode */ - tok->quote = Q_double; - break; - - case Q_double: /* Exit double quote mode */ - tok->quote = Q_none; - break; - - case Q_one: /* Quote this " */ - tok->quote = Q_none; - *tok->wptr++ = *ptr; - break; - - case Q_single: /* Stay in single quote mode */ - *tok->wptr++ = *ptr; - break; - - case Q_doubleone: /* Quote this " */ - tok->quote = Q_double; - *tok->wptr++ = *ptr; - break; - - default: - return (-1); - } - break; - - case '\\': - tok->flags |= TOK_KEEP; - tok->flags &= ~TOK_EAT; - switch (tok->quote) { - case Q_none: /* Quote next character */ - tok->quote = Q_one; - break; - - case Q_double: /* Quote next character */ - tok->quote = Q_doubleone; - break; - - case Q_one: /* Quote this, restore state */ - *tok->wptr++ = *ptr; - tok->quote = Q_none; - break; - - case Q_single: /* Stay in single quote mode */ - *tok->wptr++ = *ptr; - break; - - case Q_doubleone: /* Quote this \ */ - tok->quote = Q_double; - *tok->wptr++ = *ptr; - break; - - default: - return (-1); - } - break; - - case '\n': - tok->flags &= ~TOK_EAT; - switch (tok->quote) { - case Q_none: - tok_finish(tok); - *argv = (const char **)tok->argv; - *argc = tok->argc; - return (0); - - case Q_single: - case Q_double: - *tok->wptr++ = *ptr; /* Add the return */ - break; - - case Q_doubleone: /* Back to double, eat the '\n' */ - tok->flags |= TOK_EAT; - tok->quote = Q_double; - break; - - case Q_one: /* No quote, more eat the '\n' */ - tok->flags |= TOK_EAT; - tok->quote = Q_none; - break; - - default: - return (0); - } - break; - - case '\0': - switch (tok->quote) { - case Q_none: - /* Finish word and return */ - if (tok->flags & TOK_EAT) { - tok->flags &= ~TOK_EAT; - return (3); - } - tok_finish(tok); - *argv = (const char **)tok->argv; - *argc = tok->argc; - return (0); - - case Q_single: - return (1); - - case Q_double: - return (2); - - case Q_doubleone: - tok->quote = Q_double; - *tok->wptr++ = *ptr; - break; - - case Q_one: - tok->quote = Q_none; - *tok->wptr++ = *ptr; - break; - - default: - return (-1); - } - break; - - default: - tok->flags &= ~TOK_EAT; - switch (tok->quote) { - case Q_none: - if (strchr(tok->ifs, *ptr) != NULL) - tok_finish(tok); - else - *tok->wptr++ = *ptr; - break; - - case Q_single: - case Q_double: - *tok->wptr++ = *ptr; - break; - - - case Q_doubleone: - *tok->wptr++ = '\\'; - tok->quote = Q_double; - *tok->wptr++ = *ptr; - break; - - case Q_one: - tok->quote = Q_none; - *tok->wptr++ = *ptr; - break; - - default: - return (-1); - - } - break; - } - - if (tok->wptr >= tok->wmax - 4) { - size_t size = tok->wmax - tok->wspace + WINCR; - char *s = (char *) tok_realloc(tok->wspace, size); - if (s == NULL) - return (-1); - - if (s != tok->wspace) { - int i; - for (i = 0; i < tok->argc; i++) { - tok->argv[i] = - (tok->argv[i] - tok->wspace) + s; - } - tok->wptr = (tok->wptr - tok->wspace) + s; - tok->wstart = (tok->wstart - tok->wspace) + s; - tok->wspace = s; - } - tok->wmax = s + size; - } - if (tok->argc >= tok->amax - 4) { - char **p; - tok->amax += AINCR; - p = (char **) tok_realloc(tok->argv, - tok->amax * sizeof(char *)); - if (p == NULL) - return (-1); - tok->argv = p; - } - } -} |