451 lines
9.3 KiB
C
451 lines
9.3 KiB
C
/* $Header: /src/pub/tcsh/tc.str.c,v 3.13 2004/02/21 20:34:25 christos Exp $ */
|
|
/*
|
|
* tc.str.c: Short string package
|
|
* This has been a lesson of how to write buggy code!
|
|
*/
|
|
/*-
|
|
* Copyright (c) 1980, 1991 The Regents of the University of California.
|
|
* 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. 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 "sh.h"
|
|
|
|
RCSID("$Id: tc.str.c,v 3.13 2004/02/21 20:34:25 christos Exp $")
|
|
|
|
#define MALLOC_INCR 128
|
|
|
|
#ifdef SHORT_STRINGS
|
|
Char **
|
|
blk2short(src)
|
|
register char **src;
|
|
{
|
|
size_t n;
|
|
register Char **sdst, **dst;
|
|
|
|
/*
|
|
* Count
|
|
*/
|
|
for (n = 0; src[n] != NULL; n++)
|
|
continue;
|
|
sdst = dst = (Char **) xmalloc((size_t) ((n + 1) * sizeof(Char *)));
|
|
|
|
for (; *src != NULL; src++)
|
|
*dst++ = SAVE(*src);
|
|
*dst = NULL;
|
|
return (sdst);
|
|
}
|
|
|
|
char **
|
|
short2blk(src)
|
|
register Char **src;
|
|
{
|
|
size_t n;
|
|
register char **sdst, **dst;
|
|
|
|
/*
|
|
* Count
|
|
*/
|
|
for (n = 0; src[n] != NULL; n++)
|
|
continue;
|
|
sdst = dst = (char **) xmalloc((size_t) ((n + 1) * sizeof(char *)));
|
|
|
|
for (; *src != NULL; src++)
|
|
*dst++ = strsave(short2str(*src));
|
|
*dst = NULL;
|
|
return (sdst);
|
|
}
|
|
|
|
Char *
|
|
str2short(src)
|
|
register const char *src;
|
|
{
|
|
static Char *sdst;
|
|
static size_t dstsize = 0;
|
|
register Char *dst, *edst;
|
|
|
|
if (src == NULL)
|
|
return (NULL);
|
|
|
|
if (sdst == (NULL)) {
|
|
dstsize = MALLOC_INCR;
|
|
sdst = (Char *) xmalloc((size_t) (dstsize * sizeof(Char)));
|
|
}
|
|
|
|
dst = sdst;
|
|
edst = &dst[dstsize];
|
|
while ((unsigned char) *src) {
|
|
*dst++ = (Char) ((unsigned char) *src++);
|
|
if (dst == edst) {
|
|
dstsize += MALLOC_INCR;
|
|
sdst = (Char *) xrealloc((ptr_t) sdst,
|
|
(size_t) (dstsize * sizeof(Char)));
|
|
edst = &sdst[dstsize];
|
|
dst = &edst[-MALLOC_INCR];
|
|
}
|
|
}
|
|
*dst = 0;
|
|
return (sdst);
|
|
}
|
|
|
|
char *
|
|
short2str(src)
|
|
register const Char *src;
|
|
{
|
|
static char *sdst = NULL;
|
|
static size_t dstsize = 0;
|
|
register char *dst, *edst;
|
|
|
|
if (src == NULL)
|
|
return (NULL);
|
|
|
|
if (sdst == NULL) {
|
|
dstsize = MALLOC_INCR;
|
|
sdst = (char *) xmalloc((size_t) (dstsize * sizeof(char)));
|
|
}
|
|
dst = sdst;
|
|
edst = &dst[dstsize];
|
|
while (*src) {
|
|
*dst++ = (char) *src++;
|
|
if (dst == edst) {
|
|
dstsize += MALLOC_INCR;
|
|
sdst = (char *) xrealloc((ptr_t) sdst,
|
|
(size_t) (dstsize * sizeof(char)));
|
|
edst = &sdst[dstsize];
|
|
dst = &edst[-MALLOC_INCR];
|
|
}
|
|
}
|
|
*dst = 0;
|
|
return (sdst);
|
|
}
|
|
|
|
Char *
|
|
s_strcpy(dst, src)
|
|
register Char *dst;
|
|
register const Char *src;
|
|
{
|
|
register Char *sdst;
|
|
|
|
sdst = dst;
|
|
while ((*dst++ = *src++) != '\0')
|
|
continue;
|
|
return (sdst);
|
|
}
|
|
|
|
Char *
|
|
s_strncpy(dst, src, n)
|
|
register Char *dst;
|
|
register const Char *src;
|
|
register size_t n;
|
|
{
|
|
register Char *sdst;
|
|
|
|
if (n == 0)
|
|
return(dst);
|
|
|
|
sdst = dst;
|
|
do
|
|
if ((*dst++ = *src++) == '\0') {
|
|
while (--n != 0)
|
|
*dst++ = '\0';
|
|
return(sdst);
|
|
}
|
|
while (--n != 0);
|
|
return (sdst);
|
|
}
|
|
|
|
Char *
|
|
s_strcat(dst, src)
|
|
register Char *dst;
|
|
register const Char *src;
|
|
{
|
|
register short *sdst;
|
|
|
|
sdst = dst;
|
|
while (*dst++)
|
|
continue;
|
|
--dst;
|
|
while ((*dst++ = *src++) != '\0')
|
|
continue;
|
|
return (sdst);
|
|
}
|
|
|
|
#ifdef NOTUSED
|
|
Char *
|
|
s_strncat(dst, src, n)
|
|
register Char *dst;
|
|
register const Char *src;
|
|
register size_t n;
|
|
{
|
|
register Char *sdst;
|
|
|
|
if (n == 0)
|
|
return (dst);
|
|
|
|
sdst = dst;
|
|
|
|
while (*dst++)
|
|
continue;
|
|
--dst;
|
|
|
|
do
|
|
if ((*dst++ = *src++) == '\0')
|
|
return(sdst);
|
|
while (--n != 0)
|
|
continue;
|
|
|
|
*dst = '\0';
|
|
return (sdst);
|
|
}
|
|
|
|
#endif
|
|
|
|
Char *
|
|
s_strchr(str, ch)
|
|
register const Char *str;
|
|
int ch;
|
|
{
|
|
do
|
|
if (*str == ch)
|
|
return ((Char *) str);
|
|
while (*str++);
|
|
return (NULL);
|
|
}
|
|
|
|
Char *
|
|
s_strrchr(str, ch)
|
|
register const Char *str;
|
|
int ch;
|
|
{
|
|
register const Char *rstr;
|
|
|
|
rstr = NULL;
|
|
do
|
|
if (*str == ch)
|
|
rstr = str;
|
|
while (*str++);
|
|
return ((Char *) rstr);
|
|
}
|
|
|
|
size_t
|
|
s_strlen(str)
|
|
register const Char *str;
|
|
{
|
|
register size_t n;
|
|
|
|
for (n = 0; *str++; n++)
|
|
continue;
|
|
return (n);
|
|
}
|
|
|
|
int
|
|
s_strcmp(str1, str2)
|
|
register const Char *str1, *str2;
|
|
{
|
|
for (; *str1 && *str1 == *str2; str1++, str2++)
|
|
continue;
|
|
/*
|
|
* The following case analysis is necessary so that characters which look
|
|
* negative collate low against normal characters but high against the
|
|
* end-of-string NUL.
|
|
*/
|
|
if (*str1 == '\0' && *str2 == '\0')
|
|
return (0);
|
|
else if (*str1 == '\0')
|
|
return (-1);
|
|
else if (*str2 == '\0')
|
|
return (1);
|
|
else
|
|
return (*str1 - *str2);
|
|
}
|
|
|
|
int
|
|
s_strncmp(str1, str2, n)
|
|
register const Char *str1, *str2;
|
|
register size_t n;
|
|
{
|
|
if (n == 0)
|
|
return (0);
|
|
do {
|
|
if (*str1 != *str2) {
|
|
/*
|
|
* The following case analysis is necessary so that characters
|
|
* which look negative collate low against normal characters
|
|
* but high against the end-of-string NUL.
|
|
*/
|
|
if (*str1 == '\0')
|
|
return (-1);
|
|
else if (*str2 == '\0')
|
|
return (1);
|
|
else
|
|
return (*str1 - *str2);
|
|
}
|
|
if (*str1 == '\0')
|
|
return(0);
|
|
str1++, str2++;
|
|
} while (--n != 0);
|
|
return(0);
|
|
}
|
|
|
|
int
|
|
s_strcasecmp(str1, str2)
|
|
register const Char *str1, *str2;
|
|
{
|
|
unsigned char c1, c2, l1 = 0, l2 = 0;
|
|
for (; *str1 && ((*str1 == *str2 && (l1 = l2 = 0) == 0) ||
|
|
((c1 = (unsigned char)*str1) == *str1 &&
|
|
(c2 = (unsigned char)*str2) == *str2 &&
|
|
(l1 = tolower(c1)) == (l2 = tolower(c2)))); str1++, str2++)
|
|
continue;
|
|
/*
|
|
* The following case analysis is necessary so that characters which look
|
|
* negative collate low against normal characters but high against the
|
|
* end-of-string NUL.
|
|
*/
|
|
if (*str1 == '\0' && *str2 == '\0')
|
|
return (0);
|
|
else if (*str1 == '\0')
|
|
return (-1);
|
|
else if (*str2 == '\0')
|
|
return (1);
|
|
else if (l1 == l2) /* They are zero when they are equal */
|
|
return (*str1 - *str2);
|
|
else
|
|
return (l1 - l2);
|
|
}
|
|
|
|
Char *
|
|
s_strsave(s)
|
|
register const Char *s;
|
|
{
|
|
Char *n;
|
|
register Char *p;
|
|
|
|
if (s == 0)
|
|
s = STRNULL;
|
|
for (p = (Char *) s; *p++;)
|
|
continue;
|
|
n = p = (Char *) xmalloc((size_t)
|
|
((((const Char *) p) - s) * sizeof(Char)));
|
|
while ((*p++ = *s++) != '\0')
|
|
continue;
|
|
return (n);
|
|
}
|
|
|
|
Char *
|
|
s_strspl(cp, dp)
|
|
const Char *cp, *dp;
|
|
{
|
|
Char *ep;
|
|
register Char *p, *q;
|
|
|
|
if (!cp)
|
|
cp = STRNULL;
|
|
if (!dp)
|
|
dp = STRNULL;
|
|
for (p = (Char *) cp; *p++;)
|
|
continue;
|
|
for (q = (Char *) dp; *q++;)
|
|
continue;
|
|
ep = (Char *) xmalloc((size_t)
|
|
(((((const Char *) p) - cp) +
|
|
(((const Char *) q) - dp) - 1) * sizeof(Char)));
|
|
for (p = ep, q = (Char*) cp; (*p++ = *q++) != '\0';)
|
|
continue;
|
|
for (p--, q = (Char *) dp; (*p++ = *q++) != '\0';)
|
|
continue;
|
|
return (ep);
|
|
}
|
|
|
|
Char *
|
|
s_strend(cp)
|
|
register const Char *cp;
|
|
{
|
|
if (!cp)
|
|
return ((Char *) cp);
|
|
while (*cp)
|
|
cp++;
|
|
return ((Char *) cp);
|
|
}
|
|
|
|
Char *
|
|
s_strstr(s, t)
|
|
register const Char *s, *t;
|
|
{
|
|
do {
|
|
register const Char *ss = s;
|
|
register const Char *tt = t;
|
|
|
|
do
|
|
if (*tt == '\0')
|
|
return ((Char *) s);
|
|
while (*ss++ == *tt++);
|
|
} while (*s++ != '\0');
|
|
return (NULL);
|
|
}
|
|
|
|
#endif /* SHORT_STRINGS */
|
|
|
|
char *
|
|
short2qstr(src)
|
|
register const Char *src;
|
|
{
|
|
static char *sdst = NULL;
|
|
static size_t dstsize = 0;
|
|
register char *dst, *edst;
|
|
|
|
if (src == NULL)
|
|
return (NULL);
|
|
|
|
if (sdst == NULL) {
|
|
dstsize = MALLOC_INCR;
|
|
sdst = (char *) xmalloc((size_t) (dstsize * sizeof(char)));
|
|
}
|
|
dst = sdst;
|
|
edst = &dst[dstsize];
|
|
while (*src) {
|
|
if (*src & QUOTE) {
|
|
*dst++ = '\\';
|
|
if (dst == edst) {
|
|
dstsize += MALLOC_INCR;
|
|
sdst = (char *) xrealloc((ptr_t) sdst,
|
|
(size_t) (dstsize * sizeof(char)));
|
|
edst = &sdst[dstsize];
|
|
dst = &edst[-MALLOC_INCR];
|
|
}
|
|
}
|
|
*dst++ = (char) *src++;
|
|
if (dst == edst) {
|
|
dstsize += MALLOC_INCR;
|
|
sdst = (char *) xrealloc((ptr_t) sdst,
|
|
(size_t) (dstsize * sizeof(char)));
|
|
edst = &sdst[dstsize];
|
|
dst = &edst[-MALLOC_INCR];
|
|
}
|
|
}
|
|
*dst = 0;
|
|
return (sdst);
|
|
}
|