-/* $RCSfile: str.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:26 $
+/* str.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
- * 2001, 2002, by Larry Wall and others
+ * 2001, 2002, 2005 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
- *
- * $Log: str.c,v $
*/
#include "EXTERN.h"
#include "util.h"
void
-str_numset(register STR *str, double num)
+str_numset(STR *str, double num)
{
str->str_nval = num;
str->str_pok = 0; /* invalidate pointer */
}
char *
-str_2ptr(register STR *str)
+str_2ptr(STR *str)
{
- register char *s;
+ char *s;
if (!str)
- return "";
+ return (char *)""; /* probably safe - won't be written to */
GROWSTR(&(str->str_ptr), &(str->str_len), 24);
s = str->str_ptr;
if (str->str_nok) {
return str->str_ptr;
}
-double
-str_2num(register STR *str)
-{
- if (!str)
- return 0.0;
- if (str->str_len && str->str_pok)
- str->str_nval = atof(str->str_ptr);
- else
- str->str_nval = 0.0;
- str->str_nok = 1;
-#ifdef DEBUGGING
- if (debug & 32)
- fprintf(stderr,"0x%lx num(%g)\n",(unsigned long)str,str->str_nval);
-#endif
- return str->str_nval;
-}
-
void
-str_sset(STR *dstr, register STR *sstr)
+str_sset(STR *dstr, STR *sstr)
{
if (!sstr)
str_nset(dstr,No,0);
}
void
-str_nset(register STR *str, register char *ptr, register int len)
+str_nset(STR *str, const char *ptr, int len)
{
GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
memcpy(str->str_ptr,ptr,len);
}
void
-str_set(register STR *str, register char *ptr)
+str_set(STR *str, const char *ptr)
{
- register int len;
+ int len;
if (!ptr)
ptr = "";
}
void
-str_chop(register STR *str, register char *ptr) /* like set but assuming ptr is in str */
-
-
-{
- if (!(str->str_pok))
- str_2ptr(str);
- str->str_cur -= (ptr - str->str_ptr);
- memcpy(str->str_ptr, ptr, str->str_cur + 1);
- str->str_nok = 0; /* invalidate number */
- str->str_pok = 1; /* validate pointer */
-}
-
-void
-str_ncat(register STR *str, register char *ptr, register int len)
+str_ncat(STR *str, const char *ptr, int len)
{
if (!(str->str_pok))
str_2ptr(str);
}
void
-str_scat(STR *dstr, register STR *sstr)
+str_scat(STR *dstr, STR *sstr)
{
if (!(sstr->str_pok))
str_2ptr(sstr);
}
void
-str_cat(register STR *str, register char *ptr)
+str_cat(STR *str, const char *ptr)
{
- register int len;
+ int len;
if (!ptr)
return;
str->str_pok = 1; /* validate pointer */
}
-char *
-str_append_till(register STR *str, register char *from, register int delim, char *keeplist)
-{
- register char *to;
- register int len;
-
- if (!from)
- return Nullch;
- len = strlen(from);
- GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
- str->str_nok = 0; /* invalidate number */
- str->str_pok = 1; /* validate pointer */
- to = str->str_ptr+str->str_cur;
- for (; *from; from++,to++) {
- if (*from == '\\' && from[1] && delim != '\\') {
- if (!keeplist) {
- if (from[1] == delim || from[1] == '\\')
- from++;
- else
- *to++ = *from++;
- }
- else if (strchr(keeplist,from[1]))
- *to++ = *from++;
- else
- from++;
- }
- else if (*from == delim)
- break;
- *to = *from;
- }
- *to = '\0';
- str->str_cur = to - str->str_ptr;
- return from;
-}
-
STR *
str_new(int len)
{
- register STR *str;
+ STR *str;
if (freestrroot) {
str = freestrroot;
return str;
}
-void
-str_grow(register STR *str, int len)
-{
- if (len && str)
- GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
-}
-
/* make str point to what nstr did */
void
-str_replace(register STR *str, register STR *nstr)
-{
- safefree(str->str_ptr);
- str->str_ptr = nstr->str_ptr;
- str->str_len = nstr->str_len;
- str->str_cur = nstr->str_cur;
- str->str_pok = nstr->str_pok;
- if ((str->str_nok = nstr->str_nok))
- str->str_nval = nstr->str_nval;
- safefree((char*)nstr);
-}
-
-void
-str_free(register STR *str)
+str_free(STR *str)
{
if (!str)
return;
}
int
-str_len(register STR *str)
+str_len(STR *str)
{
if (!str)
return 0;
}
char *
-str_gets(register STR *str, register FILE *fp)
+str_gets(STR *str, FILE *fp)
{
#if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE)
/* Here is some breathtakingly efficient cheating */
- register char *bp; /* we're going to steal some values */
- register int cnt; /* from the stdio struct and put EVERYTHING */
- register STDCHAR *ptr; /* in the innermost loop into registers */
- register char newline = '\n'; /* (assuming at least 6 registers) */
+ char *bp; /* we're going to steal some values */
+ int cnt; /* from the stdio struct and put EVERYTHING */
+ STDCHAR *ptr; /* in the innermost loop into registers */
+ char newline = '\n'; /* (assuming at least 6 registers) */
int i;
int bpx;
* buffer, so we getc() it back out and stuff it in the buffer.
*/
i = getc(fp);
- if (i == EOF) return Nullch;
+ if (i == EOF) return NULL;
*(--((*fp)->_ptr)) = (unsigned char) i;
(*fp)->_cnt++;
#endif
for (;;) {
while (--cnt >= 0) {
if ((*bp++ = *ptr++) == newline) {
- if (bp <= str->str_ptr || bp[-2] != '\\')
+ if (bp <= str->str_ptr + 1 || bp[-2] != '\\')
goto thats_all_folks;
else {
line++;
}
FILE_cnt(fp) = cnt; /* deregisterize cnt and ptr */
- FILE_ptr(fp) = (void*)ptr; /* LHS STDCHAR* cast non-portable */
+ FILE_ptr(fp) = ptr;
i = getc(fp); /* get more characters */
cnt = FILE_cnt(fp);
ptr = (STDCHAR*)FILE_ptr(fp); /* reregisterize cnt and ptr */
thats_all_folks:
FILE_cnt(fp) = cnt; /* put these back or we're in trouble */
- FILE_ptr(fp) = (void*)ptr; /* LHS STDCHAR* cast non-portable */
+ FILE_ptr(fp) = ptr;
*bp = '\0';
str->str_cur = bp - str->str_ptr; /* set length */
static char buf[4192];
- if (fgets(buf, sizeof buf, fp) != Nullch)
+ if (fgets(buf, sizeof buf, fp) != NULL)
str_set(str, buf);
else
str_set(str, No);
#endif /* USE_STDIO_PTR && STDIO_PTR_LVALUE && STDIO_CNT_LVALUE */
- return str->str_cur ? str->str_ptr : Nullch;
-}
-
-void
-str_inc(register STR *str)
-{
- register char *d;
-
- if (!str)
- return;
- if (str->str_nok) {
- str->str_nval += 1.0;
- str->str_pok = 0;
- return;
- }
- if (!str->str_pok) {
- str->str_nval = 1.0;
- str->str_nok = 1;
- return;
- }
- for (d = str->str_ptr; *d && *d != '.'; d++) ;
- d--;
- if (!isDIGIT(*str->str_ptr) || !isDIGIT(*d) ) {
- str_numset(str,atof(str->str_ptr) + 1.0); /* punt */
- return;
- }
- while (d >= str->str_ptr) {
- if (++*d <= '9')
- return;
- *(d--) = '0';
- }
- /* oh,oh, the number grew */
- GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
- str->str_cur++;
- for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
- *d = d[-1];
- *d = '1';
-}
-
-void
-str_dec(register STR *str)
-{
- register char *d;
-
- if (!str)
- return;
- if (str->str_nok) {
- str->str_nval -= 1.0;
- str->str_pok = 0;
- return;
- }
- if (!str->str_pok) {
- str->str_nval = -1.0;
- str->str_nok = 1;
- return;
- }
- for (d = str->str_ptr; *d && *d != '.'; d++) ;
- d--;
- if (!isDIGIT(*str->str_ptr) || !isDIGIT(*d) || (*d == '0' && d == str->str_ptr)) {
- str_numset(str,atof(str->str_ptr) - 1.0); /* punt */
- return;
- }
- while (d >= str->str_ptr) {
- if (--*d >= '0')
- return;
- *(d--) = '9';
- }
-}
-
-/* make a string that will exist for the duration of the expression eval */
-
-STR *
-str_mortal(STR *oldstr)
-{
- register STR *str = str_new(0);
- static long tmps_size = -1;
-
- str_sset(str,oldstr);
- if (++tmps_max > tmps_size) {
- tmps_size = tmps_max;
- if (!(tmps_size & 127)) {
- if (tmps_size)
- tmps_list = (STR**)saferealloc((char*)tmps_list,
- (tmps_size + 128) * sizeof(STR*) );
- else
- tmps_list = (STR**)safemalloc(128 * sizeof(char*));
- }
- }
- tmps_list[tmps_max] = str;
- return str;
+ return str->str_cur ? str->str_ptr : NULL;
}
STR *
-str_make(char *s)
+str_make(const char *s)
{
- register STR *str = str_new(0);
+ STR *str = str_new(0);
str_set(str,s);
return str;
}
-STR *
-str_nmake(double n)
-{
- register STR *str = str_new(0);
-
- str_numset(str,n);
- return str;
-}
https://perl5.git.perl.org / perl5.git / blobdiff