chromium/third_party/nasm/asm/quote.c

/* ----------------------------------------------------------------------- *
 *
 *   Copyright 1996-2019 The NASM Authors - All Rights Reserved
 *   See the file AUTHORS included with the NASM distribution for
 *   the specific copyright holders.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following
 *   conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * 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.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 *
 * ----------------------------------------------------------------------- */

/*
 * quote.c
 */

#include "compiler.h"
#include "nasmlib.h"
#include "quote.h"
#include "nctype.h"
#include "error.h"

/*
 * Create a NASM quoted string in newly allocated memory. Update the
 * *lenp parameter with the output length (sans final NUL).
 */

char *nasm_quote(const char *str, size_t *lenp)
{ … }

static unsigned char *emit_utf8(unsigned char *q, uint32_t v)
{ … }

static inline uint32_t ctlbit(uint32_t v)
{ … }

#define CTL_ERR(c) …

#define EMIT_UTF8(c) …

#define EMIT …

/*
 * Same as nasm_quote, but take the length of a C string;
 * the lenp argument is optional.
 */
char *nasm_quote_cstr(const char *str, size_t *lenp)
{ … }

/*
 * Do an *in-place* dequoting of the specified string, returning the
 * resulting length (which may be containing embedded nulls.)
 *
 * In-place replacement is possible since the unquoted length is always
 * shorter than or equal to the quoted length.
 *
 * *ep points to the final quote, or to the null if improperly quoted.
 *
 * Issue an error if the string contains control characters
 * corresponding to bits set in badctl; in that case, the output
 * string, but not *ep, is truncated before the first invalid
 * character.
 */

static size_t nasm_unquote_common(char *str, char **ep,
                                  const uint32_t badctl)
{ … }
#undef EMIT

size_t nasm_unquote(char *str, char **ep)
{ … }
size_t nasm_unquote_cstr(char *str, char **ep)
{ … }

/*
 * Find the end of a quoted string; returns the pointer to the terminating
 * character (either the ending quote or the null character, if unterminated.)
 * If the input is not a quoted string, return NULL.
 */
char *nasm_skip_string(const char *str)
{ … }