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ash: move ifsbreakup() and ifsfree() up

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Preparatory patch.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-10-27 14:45:13 +02:00
parent b4f51d32d2
commit 455e422814
1 changed files with 110 additions and 110 deletions
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220
shell/ash.c
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@ -5568,6 +5568,116 @@ cvtnum(arith_t num)
return len;
}
/*
* Break the argument string into pieces based upon IFS and add the
* strings to the argument list. The regions of the string to be
* searched for IFS characters have been stored by recordregion.
*/
static void
ifsbreakup(char *string, struct arglist *arglist)
{
struct ifsregion *ifsp;
struct strlist *sp;
char *start;
char *p;
char *q;
const char *ifs, *realifs;
int ifsspc;
int nulonly;
start = string;
if (ifslastp != NULL) {
ifsspc = 0;
nulonly = 0;
realifs = ifsset() ? ifsval() : defifs;
ifsp = &ifsfirst;
do {
p = string + ifsp->begoff;
nulonly = ifsp->nulonly;
ifs = nulonly ? nullstr : realifs;
ifsspc = 0;
while (p < string + ifsp->endoff) {
q = p;
if ((unsigned char)*p == CTLESC)
p++;
if (!strchr(ifs, *p)) {
p++;
continue;
}
if (!nulonly)
ifsspc = (strchr(defifs, *p) != NULL);
/* Ignore IFS whitespace at start */
if (q == start && ifsspc) {
p++;
start = p;
continue;
}
*q = '\0';
sp = stzalloc(sizeof(*sp));
sp->text = start;
*arglist->lastp = sp;
arglist->lastp = &sp->next;
p++;
if (!nulonly) {
for (;;) {
if (p >= string + ifsp->endoff) {
break;
}
q = p;
if ((unsigned char)*p == CTLESC)
p++;
if (strchr(ifs, *p) == NULL) {
p = q;
break;
}
if (strchr(defifs, *p) == NULL) {
if (ifsspc) {
p++;
ifsspc = 0;
} else {
p = q;
break;
}
} else
p++;
}
}
start = p;
} /* while */
ifsp = ifsp->next;
} while (ifsp != NULL);
if (nulonly)
goto add;
}
if (!*start)
return;
add:
sp = stzalloc(sizeof(*sp));
sp->text = start;
*arglist->lastp = sp;
arglist->lastp = &sp->next;
}
static void
ifsfree(void)
{
struct ifsregion *p;
INT_OFF;
p = ifsfirst.next;
do {
struct ifsregion *ifsp;
ifsp = p->next;
free(p);
p = ifsp;
} while (p);
ifslastp = NULL;
ifsfirst.next = NULL;
INT_ON;
}
static size_t
esclen(const char *start, const char *p)
{
@ -6848,116 +6958,6 @@ evalvar(char *p, int flag, struct strlist *var_str_list)
return p;
}
/*
* Break the argument string into pieces based upon IFS and add the
* strings to the argument list. The regions of the string to be
* searched for IFS characters have been stored by recordregion.
*/
static void
ifsbreakup(char *string, struct arglist *arglist)
{
struct ifsregion *ifsp;
struct strlist *sp;
char *start;
char *p;
char *q;
const char *ifs, *realifs;
int ifsspc;
int nulonly;
start = string;
if (ifslastp != NULL) {
ifsspc = 0;
nulonly = 0;
realifs = ifsset() ? ifsval() : defifs;
ifsp = &ifsfirst;
do {
p = string + ifsp->begoff;
nulonly = ifsp->nulonly;
ifs = nulonly ? nullstr : realifs;
ifsspc = 0;
while (p < string + ifsp->endoff) {
q = p;
if ((unsigned char)*p == CTLESC)
p++;
if (!strchr(ifs, *p)) {
p++;
continue;
}
if (!nulonly)
ifsspc = (strchr(defifs, *p) != NULL);
/* Ignore IFS whitespace at start */
if (q == start && ifsspc) {
p++;
start = p;
continue;
}
*q = '\0';
sp = stzalloc(sizeof(*sp));
sp->text = start;
*arglist->lastp = sp;
arglist->lastp = &sp->next;
p++;
if (!nulonly) {
for (;;) {
if (p >= string + ifsp->endoff) {
break;
}
q = p;
if ((unsigned char)*p == CTLESC)
p++;
if (strchr(ifs, *p) == NULL) {
p = q;
break;
}
if (strchr(defifs, *p) == NULL) {
if (ifsspc) {
p++;
ifsspc = 0;
} else {
p = q;
break;
}
} else
p++;
}
}
start = p;
} /* while */
ifsp = ifsp->next;
} while (ifsp != NULL);
if (nulonly)
goto add;
}
if (!*start)
return;
add:
sp = stzalloc(sizeof(*sp));
sp->text = start;
*arglist->lastp = sp;
arglist->lastp = &sp->next;
}
static void
ifsfree(void)
{
struct ifsregion *p;
INT_OFF;
p = ifsfirst.next;
do {
struct ifsregion *ifsp;
ifsp = p->next;
free(p);
p = ifsp;
} while (p);
ifslastp = NULL;
ifsfirst.next = NULL;
INT_ON;
}
/*
* Add a file name to the list.
*/