aboutsummaryrefslogtreecommitdiff
path: root/lib/libedit/tokenizer.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libedit/tokenizer.c')
-rw-r--r--lib/libedit/tokenizer.c455
1 files changed, 0 insertions, 455 deletions
diff --git a/lib/libedit/tokenizer.c b/lib/libedit/tokenizer.c
deleted file mode 100644
index 23f940ff866a..000000000000
--- a/lib/libedit/tokenizer.c
+++ /dev/null
@@ -1,455 +0,0 @@
-/* $NetBSD: tokenizer.c,v 1.24 2016/02/17 19:47:49 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. 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 1.24 2016/02/17 19:47:49 christos Exp $");
-#endif
-#endif /* not lint && not SCCSID */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/* We build this file twice, once as NARROW, once as WIDE. */
-/*
- * tokenize.c: Bourne shell like tokenizer
- */
-#include <stdlib.h>
-#include <string.h>
-
-#include "histedit.h"
-#include "chartype.h"
-
-typedef enum {
- Q_none, Q_single, Q_double, Q_one, Q_doubleone
-} quote_t;
-
-#define TOK_KEEP 1
-#define TOK_EAT 2
-
-#define WINCR 20
-#define AINCR 10
-
-#define IFS STR("\t \n")
-
-#define tok_malloc(a) malloc(a)
-#define tok_free(a) free(a)
-#define tok_realloc(a, b) realloc(a, b)
-#define tok_strdup(a) Strdup(a)
-
-
-struct TYPE(tokenizer) {
- Char *ifs; /* In field separator */
- size_t 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 FUN(tok,finish)(TYPE(Tokenizer) *);
-
-
-/* FUN(tok,finish)():
- * Finish a word in the tokenizer.
- */
-private void
-FUN(tok,finish)(TYPE(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;
-}
-
-
-/* FUN(tok,init)():
- * Initialize the tokenizer
- */
-public TYPE(Tokenizer) *
-FUN(tok,init)(const Char *ifs)
-{
- TYPE(Tokenizer) *tok = tok_malloc(sizeof(*tok));
-
- if (tok == NULL)
- return NULL;
- tok->ifs = tok_strdup(ifs ? ifs : IFS);
- if (tok->ifs == NULL) {
- tok_free(tok);
- return NULL;
- }
- tok->argc = 0;
- tok->amax = AINCR;
- tok->argv = tok_malloc(sizeof(*tok->argv) * tok->amax);
- if (tok->argv == NULL) {
- tok_free(tok->ifs);
- tok_free(tok);
- return NULL;
- }
- tok->argv[0] = NULL;
- tok->wspace = tok_malloc(WINCR * sizeof(*tok->wspace));
- if (tok->wspace == NULL) {
- tok_free(tok->argv);
- tok_free(tok->ifs);
- tok_free(tok);
- return NULL;
- }
- tok->wmax = tok->wspace + WINCR;
- tok->wstart = tok->wspace;
- tok->wptr = tok->wspace;
- tok->flags = 0;
- tok->quote = Q_none;
-
- return tok;
-}
-
-
-/* FUN(tok,reset)():
- * Reset the tokenizer
- */
-public void
-FUN(tok,reset)(TYPE(Tokenizer) *tok)
-{
-
- tok->argc = 0;
- tok->wstart = tok->wspace;
- tok->wptr = tok->wspace;
- tok->flags = 0;
- tok->quote = Q_none;
-}
-
-
-/* FUN(tok,end)():
- * Clean up
- */
-public void
-FUN(tok,end)(TYPE(Tokenizer) *tok)
-{
-
- tok_free(tok->ifs);
- tok_free(tok->wspace);
- tok_free(tok->argv);
- tok_free(tok);
-}
-
-
-
-/* FUN(tok,line)():
- * Bourne shell (sh(1)) like tokenizing
- * Arguments:
- * tok current tokenizer state (setup with FUN(tok,init)())
- * line line to parse
- * Returns:
- * -1 Internal error
- * 3 Quoted return
- * 2 Unmatched double quote
- * 1 Unmatched single quote
- * 0 Ok
- * Modifies (if return value is 0):
- * argc number of arguments
- * argv argument array
- * cursorc if !NULL, argv element containing cursor
- * cursorv if !NULL, offset in argv[cursorc] of cursor
- */
-public int
-FUN(tok,line)(TYPE(Tokenizer) *tok, const TYPE(LineInfo) *line,
- int *argc, const Char ***argv, int *cursorc, int *cursoro)
-{
- const Char *ptr;
- int cc, co;
-
- cc = co = -1;
- ptr = line->buffer;
- for (ptr = line->buffer; ;ptr++) {
- if (ptr >= line->lastchar)
- ptr = STR("");
- if (ptr == line->cursor) {
- cc = (int)tok->argc;
- co = (int)(tok->wptr - tok->wstart);
- }
- switch (*ptr) {
- 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:
- goto tok_line_outok;
-
- 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;
- }
- goto tok_line_outok;
-
- 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)
- FUN(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 = (size_t)(tok->wmax - tok->wspace + WINCR);
- Char *s = tok_realloc(tok->wspace,
- size * sizeof(*s));
- if (s == NULL)
- return -1;
-
- if (s != tok->wspace) {
- size_t 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 = tok_realloc(tok->argv, tok->amax * sizeof(*p));
- if (p == NULL) {
- tok->amax -= AINCR;
- return -1;
- }
- tok->argv = p;
- }
- }
- tok_line_outok:
- if (cc == -1 && co == -1) {
- cc = (int)tok->argc;
- co = (int)(tok->wptr - tok->wstart);
- }
- if (cursorc != NULL)
- *cursorc = cc;
- if (cursoro != NULL)
- *cursoro = co;
- FUN(tok,finish)(tok);
- *argv = (const Char **)tok->argv;
- *argc = (int)tok->argc;
- return 0;
-}
-
-/* FUN(tok,str)():
- * Simpler version of tok_line, taking a NUL terminated line
- * and splitting into words, ignoring cursor state.
- */
-public int
-FUN(tok,str)(TYPE(Tokenizer) *tok, const Char *line, int *argc,
- const Char ***argv)
-{
- TYPE(LineInfo) li;
-
- memset(&li, 0, sizeof(li));
- li.buffer = line;
- li.cursor = li.lastchar = Strchr(line, '\0');
- return FUN(tok,line)(tok, &li, argc, argv, NULL, NULL);
-}