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Diffstat (limited to 'bin/cash/libedit/tokenizer.c')
| -rw-r--r-- | bin/cash/libedit/tokenizer.c | 466 |
1 files changed, 0 insertions, 466 deletions
diff --git a/bin/cash/libedit/tokenizer.c b/bin/cash/libedit/tokenizer.c deleted file mode 100644 index 18532240..00000000 --- a/bin/cash/libedit/tokenizer.c +++ /dev/null @@ -1,466 +0,0 @@ -/* $NetBSD: tokenizer.c,v 1.28 2016/04/11 18:56:31 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 1.28 2016/04/11 18:56:31 christos Exp $"); -#endif -#endif /* not lint && not SCCSID */ - -/* 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" - -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) - -#ifdef NARROWCHAR -#define Char char -#define FUN(prefix, rest) prefix ## _ ## rest -#define TYPE(type) type -#define STR(x) x -#define Strchr(s, c) strchr(s, c) -#define tok_strdup(s) strdup(s) -#else -#define Char wchar_t -#define FUN(prefix, rest) prefix ## _w ## rest -#define TYPE(type) type ## W -#define STR(x) L ## x -#define Strchr(s, c) wcschr(s, c) -#define tok_strdup(s) wcsdup(s) -#endif - -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; */ -}; - - -static void FUN(tok,finish)(TYPE(Tokenizer) *); - - -/* FUN(tok,finish)(): - * Finish a word in the tokenizer. - */ -static 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 - */ -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 - */ -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 - */ -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 - */ -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. - */ -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); -} |