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Diffstat (limited to 'pkgtools/libnbcompat/files/shquote.c')
| -rw-r--r-- | pkgtools/libnbcompat/files/shquote.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/pkgtools/libnbcompat/files/shquote.c b/pkgtools/libnbcompat/files/shquote.c new file mode 100644 index 00000000000..28f07ae4092 --- /dev/null +++ b/pkgtools/libnbcompat/files/shquote.c @@ -0,0 +1,181 @@ +/* $NetBSD: shquote.c,v 1.1 2008/10/06 12:36:20 joerg Exp $ */ + +/* + * Copyright (c) 2001 Christopher G. Demetriou + * All rights reserved. + * + * 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 for the + * NetBSD Project. See http://www.NetBSD.org/ for + * information about NetBSD. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + * + * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>> + */ + +#include <nbcompat.h> + +/* + * Define SHQUOTE_USE_MULTIBYTE if you want shquote() to handle multibyte + * characters using mbrtowc(). + * + * Please DO NOT rip this #ifdef out of the code. It's also here to help + * portability. + */ +#undef SHQUOTE_USE_MULTIBYTE + +#include <nbcompat/stdlib.h> +#include <string.h> +#ifdef SHQUOTE_USE_MULTIBYTE +#include <limits.h> +#include <stdio.h> +#include <wchar.h> +#endif + +/* + * shquote(): + * + * Requotes arguments so that they'll be interpreted properly by the + * shell (/bin/sh). + * + * Wraps single quotes around the string, and replaces single quotes + * in the string with the sequence: + * '\'' + * + * Returns the number of characters required to hold the resulting quoted + * argument. + * + * The buffer supplied is filled in and NUL-terminated. If 'bufsize' + * indicates that the buffer is too short to hold the output string, the + * first (bufsize - 1) bytes of quoted argument are filled in and the + * buffer is NUL-terminated. + * + * Changes could be made to optimize the length of strings output by this + * function: + * + * * if there are no metacharacters or whitespace in the input, + * the output could be the input string. + */ + +#ifdef SHQUOTE_USE_MULTIBYTE + +#define XLATE_OUTCH(x) wcrtomb(outch, (x), &mbso) +#define XLATE_INCH() \ + do { \ + n = mbrtowc(&c, arg, MB_CUR_MAX, &mbsi); \ + } while (/*LINTED const cond*/0) + +#else + +#define XLATE_OUTCH(x) (outch[0] = (x), 1) +#define XLATE_INCH() \ + do { \ + n = ((c = *arg) != '\0') ? 1 : 0; \ + } while (/*LINTED const cond*/0) + +#endif + +#define PUT(x) \ + do { \ + outchlen = XLATE_OUTCH(x); \ + if (outchlen == (size_t)-1) \ + goto bad; \ + rv += outchlen; \ + if (bufsize != 0) { \ + if (bufsize < outchlen || \ + (bufsize == outchlen && \ + outch[outchlen - 1] != '\0')) { \ + *buf = '\0'; \ + bufsize = 0; \ + } else { \ + memcpy(buf, outch, outchlen); \ + buf += outchlen; \ + bufsize -= outchlen; \ + } \ + } \ + } while (/*LINTED const cond*/0) + +size_t +shquote(const char *arg, char *buf, size_t bufsize) +{ +#ifdef SHQUOTE_USE_MULTIBYTE + char outch[MB_LEN_MAX]; + mbstate_t mbsi, mbso; + wchar_t c, lastc; + size_t outchlen; +#else + char outch[1]; + char c, lastc; + size_t outchlen; +#endif + size_t rv; + int n; + + rv = 0; + lastc = 0; +#ifdef SHQUOTE_USE_MULTIBYTE + memset(&mbsi, 0, sizeof mbsi); + memset(&mbso, 0, sizeof mbso); +#endif + + if (*arg != '\'') + PUT('\''); + for (;;) { + XLATE_INCH(); + if (n <= 0) + break; + arg += n; + lastc = c; + + if (c == '\'') { + if (rv != 0) + PUT('\''); + PUT('\\'); + PUT('\''); + for (;;) { + XLATE_INCH(); + if (n <= 0 || c != '\'') + break; + PUT('\\'); + PUT('\''); + arg += n; + } + if (n > 0) + PUT('\''); + } else + PUT(c); + } + if (lastc != '\'') + PUT('\''); + + /* Put multibyte or NUL terminator, but don't count the NUL. */ + PUT('\0'); + rv--; + + return rv; + +bad: + /* A multibyte character encoding or decoding error occurred. */ + return (size_t)-1; +} |