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Diffstat (limited to 'bin/dash/src/mystring.c')
| -rw-r--r-- | bin/dash/src/mystring.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/bin/dash/src/mystring.c b/bin/dash/src/mystring.c deleted file mode 100644 index de624b89..00000000 --- a/bin/dash/src/mystring.c +++ /dev/null @@ -1,257 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * Copyright (c) 1997-2005 - * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Kenneth Almquist. - * - * 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. - */ - -/* - * String functions. - * - * equal(s1, s2) Return true if strings are equal. - * scopy(from, to) Copy a string. - * scopyn(from, to, n) Like scopy, but checks for overflow. - * number(s) Convert a string of digits to an integer. - * is_number(s) Return true if s is a string of digits. - */ - -#include <ctype.h> -#include <errno.h> -#include <inttypes.h> -#include <limits.h> -#include <inttypes.h> -#include <stdlib.h> -#include "shell.h" -#include "syntax.h" -#include "error.h" -#include "mystring.h" -#include "memalloc.h" -#include "parser.h" -#include "system.h" - - -char nullstr[1]; /* zero length string */ -const char spcstr[] = " "; -const char snlfmt[] = "%s\n"; -const char dolatstr[] = { CTLQUOTEMARK, CTLVAR, VSNORMAL, '@', '=', - CTLQUOTEMARK, '\0' }; -const char qchars[] = { CTLESC, CTLQUOTEMARK, 0 }; -const char illnum[] = "Illegal number: %s"; -const char homestr[] = "HOME"; - -/* - * equal - #defined in mystring.h - */ - -/* - * scopy - #defined in mystring.h - */ - - -#if 0 -/* - * scopyn - copy a string from "from" to "to", truncating the string - * if necessary. "To" is always nul terminated, even if - * truncation is performed. "Size" is the size of "to". - */ - -void -scopyn(const char *from, char *to, int size) -{ - - while (--size > 0) { - if ((*to++ = *from++) == '\0') - return; - } - *to = '\0'; -} -#endif - - -/* - * prefix -- see if pfx is a prefix of string. - */ - -char * -prefix(const char *string, const char *pfx) -{ - while (*pfx) { - if (*pfx++ != *string++) - return 0; - } - return (char *) string; -} - -void badnum(const char *s) -{ - sh_error(illnum, s); -} - -/* - * Convert a string into an integer of type intmax_t. Alow trailing spaces. - */ -intmax_t atomax(const char *s, int base) -{ - char *p; - intmax_t r; - - errno = 0; - r = strtoimax(s, &p, base); - - if (errno == ERANGE) - badnum(s); - - /* - * Disallow completely blank strings in non-arithmetic (base != 0) - * contexts. - */ - if (p == s && base) - badnum(s); - - while (isspace((unsigned char)*p)) - p++; - - if (*p) - badnum(s); - - return r; -} - -intmax_t atomax10(const char *s) -{ - return atomax(s, 10); -} - -/* - * Convert a string of digits to an integer, printing an error message on - * failure. - */ - -int -number(const char *s) -{ - intmax_t n = atomax10(s); - - if (n < 0 || n > INT_MAX) - badnum(s); - - return n; -} - - - -/* - * Check for a valid number. This should be elsewhere. - */ - -int -is_number(const char *p) -{ - do { - if (! is_digit(*p)) - return 0; - } while (*++p != '\0'); - return 1; -} - - -/* - * Produce a possibly single quoted string suitable as input to the shell. - * The return string is allocated on the stack. - */ - -char * -single_quote(const char *s) { - char *p; - - STARTSTACKSTR(p); - - do { - char *q; - size_t len; - - len = strchrnul(s, '\'') - s; - - q = p = makestrspace(len + 3, p); - - *q++ = '\''; - q = mempcpy(q, s, len); - *q++ = '\''; - s += len; - - STADJUST(q - p, p); - - len = strspn(s, "'"); - if (!len) - break; - - q = p = makestrspace(len + 3, p); - - *q++ = '"'; - q = mempcpy(q, s, len); - *q++ = '"'; - s += len; - - STADJUST(q - p, p); - } while (*s); - - USTPUTC(0, p); - - return stackblock(); -} - -/* - * Like strdup but works with the ash stack. - */ - -char * -sstrdup(const char *p) -{ - size_t len = strlen(p) + 1; - return memcpy(stalloc(len), p, len); -} - -/* - * Wrapper around strcmp for qsort/bsearch/... - */ -int -pstrcmp(const void *a, const void *b) -{ - return strcmp(*(const char *const *) a, *(const char *const *) b); -} - -/* - * Find a string is in a sorted array. - */ -const char *const * -findstring(const char *s, const char *const *array, size_t nmemb) -{ - return bsearch(&s, array, nmemb, sizeof(const char *), pstrcmp); -} |