void
process(void)
{
struct s_command *cp;
SPACE tspace;
size_t oldpsl = 0;
char *p;
p = NULL;
for (linenum = 0; mf_fgets(&PS, REPLACE);) {
pd = 0;
top:
cp = prog;
redirect:
while (cp != NULL) {
if (!applies(cp)) {
cp = cp->next;
continue;
}
switch (cp->code) {
case '{':
cp = cp->u.c;
goto redirect;
case 'a':
if (appendx >= appendnum)
if ((appends = realloc(appends,
sizeof(struct s_appends) *
(appendnum *= 2))) == NULL)
err(1, "realloc");
appends[appendx].type = AP_STRING;
appends[appendx].s = cp->t;
appends[appendx].len = strlen(cp->t);
appendx++;
break;
case 'b':
cp = cp->u.c;
goto redirect;
case 'c':
pd = 1;
psl = 0;
if (cp->a2 == NULL || lastaddr || lastline())
(void)fprintf(outfile, "%s", cp->t);
break;
case 'd':
pd = 1;
goto new;
case 'D':
if (pd)
goto new;
if (psl == 0 ||
(p = memchr(ps, '\n', psl)) == NULL) {
pd = 1;
goto new;
} else {
psl -= (p + 1) - ps;
memmove(ps, p + 1, psl);
goto top;
}
case 'g':
cspace(&PS, hs, hsl, REPLACE);
break;
case 'G':
cspace(&PS, "\n", 1, APPEND);
cspace(&PS, hs, hsl, APPEND);
break;
case 'h':
cspace(&HS, ps, psl, REPLACE);
break;
case 'H':
cspace(&HS, "\n", 1, APPEND);
cspace(&HS, ps, psl, APPEND);
break;
case 'i':
(void)fprintf(outfile, "%s", cp->t);
break;
case 'l':
lputs(ps, psl);
break;
case 'n':
if (!nflag && !pd)
OUT();
flush_appends();
if (!mf_fgets(&PS, REPLACE))
exit(0);
pd = 0;
break;
case 'N':
flush_appends();
cspace(&PS, "\n", 1, APPEND);
if (!mf_fgets(&PS, APPEND))
exit(0);
break;
case 'p':
if (pd)
break;
OUT();
break;
case 'P':
if (pd)
break;
if ((p = memchr(ps, '\n', psl)) != NULL) {
oldpsl = psl;
psl = p - ps;
}
OUT();
if (p != NULL)
psl = oldpsl;
break;
case 'q':
if (!nflag && !pd)
OUT();
flush_appends();
exit(0);
case 'r':
if (appendx >= appendnum)
if ((appends = realloc(appends,
sizeof(struct s_appends) *
(appendnum *= 2))) == NULL)
err(1, "realloc");
appends[appendx].type = AP_FILE;
appends[appendx].s = cp->t;
appends[appendx].len = strlen(cp->t);
appendx++;
break;
case 's':
sdone |= substitute(cp);
break;
case 't':
if (sdone) {
sdone = 0;
cp = cp->u.c;
goto redirect;
}
break;
case 'w':
if (pd)
break;
if (cp->u.fd == -1 && (cp->u.fd = open(cp->t,
O_WRONLY|O_APPEND|O_CREAT|O_TRUNC,
DEFFILEMODE)) == -1)
err(1, "%s", cp->t);
if (write(cp->u.fd, ps, psl) != (ssize_t)psl ||
write(cp->u.fd, "\n", 1) != 1)
err(1, "%s", cp->t);
break;
case 'x':
/*
* If the hold space is null, make it empty
* but not null. Otherwise the pattern space
* will become null after the swap, which is
* an abnormal condition.
*/
if (hs == NULL)
cspace(&HS, "", 0, REPLACE);
tspace = PS;
PS = HS;
HS = tspace;
break;
case 'y':
if (pd || psl == 0)
break;
do_tr(cp->u.y);
break;
case ':':
case '}':
break;
case '=':
(void)fprintf(outfile, "%lu\n", linenum);
}
cp = cp->next;
} /* for all cp */
void
process(void)
{
struct s_command *cp;
SPACE tspace;
size_t len, oldpsl;
char *p;
oldpsl = 0;
for (linenum = 0; mf_fgets(&PS, REPLACE);) {
pd = 0;
top:
cp = prog;
redirect:
while (cp != NULL) {
if (!applies(cp)) {
cp = cp->next;
continue;
}
switch (cp->code) {
case '{':
cp = cp->u.c;
goto redirect;
case 'a':
if (appendx >= appendnum) {
appends = xrealloc(appends,
sizeof(struct s_appends) *
(appendnum * 2));
appendnum *= 2;
}
appends[appendx].type = AP_STRING;
appends[appendx].s = cp->t;
appends[appendx].len = strlen(cp->t);
appendx++;
break;
case 'b':
cp = cp->u.c;
goto redirect;
case 'c':
pd = 1;
psl = 0;
if (cp->a2 == NULL || lastaddr)
(void)printf("%s", cp->t);
break;
case 'd':
pd = 1;
goto new;
case 'D':
if (psl == 0)
pd = 1;
if (pd)
goto new;
if ((p = memchr(ps, '\n', psl - 1)) == NULL) {
pd = 1;
goto new;
} else {
psl -= (p + 1) - ps;
memmove(ps, p + 1, psl);
goto top;
}
case 'g':
cspace(&PS, hs, hsl, REPLACE);
break;
case 'G':
if (hs == NULL)
cspace(&HS, "\n", 1, REPLACE);
cspace(&PS, hs, hsl, 0);
break;
case 'h':
cspace(&HS, ps, psl, REPLACE);
break;
case 'H':
cspace(&HS, ps, psl, 0);
break;
case 'i':
(void)printf("%s", cp->t);
break;
case 'l':
lputs(ps);
break;
case 'n':
if (!nflag && !pd)
OUT(ps)
flush_appends();
if (!mf_fgets(&PS, REPLACE))
exit(0);
pd = 0;
break;
case 'N':
flush_appends();
if (!mf_fgets(&PS, 0)) {
if (!nflag && !pd)
OUT(ps)
exit(0);
}
break;
case 'p':
if (pd)
break;
OUT(ps)
break;
case 'P':
if (pd)
break;
if ((p = memchr(ps, '\n', psl - 1)) != NULL) {
oldpsl = psl;
psl = (p + 1) - ps;
}
OUT(ps)
if (p != NULL)
psl = oldpsl;
break;
case 'q':
if (!nflag && !pd)
OUT(ps)
flush_appends();
exit(0);
case 'r':
if (appendx >= appendnum) {
appends = xrealloc(appends,
sizeof(struct s_appends) *
(appendnum * 2));
appendnum *= 2;
}
appends[appendx].type = AP_FILE;
appends[appendx].s = cp->t;
appends[appendx].len = strlen(cp->t);
appendx++;
break;
case 's':
sdone |= substitute(cp);
break;
case 't':
if (sdone) {
sdone = 0;
cp = cp->u.c;
goto redirect;
}
break;
case 'w':
if (pd)
break;
if (cp->u.fd == -1 && (cp->u.fd = open(cp->t,
O_WRONLY|O_APPEND|O_CREAT|O_TRUNC,
DEFFILEMODE)) == -1)
err(FATAL, "%s: %s",
cp->t, strerror(errno));
if ((size_t)write(cp->u.fd, ps, psl) != psl)
err(FATAL, "%s: %s",
cp->t, strerror(errno));
break;
case 'x':
if (hs == NULL)
cspace(&HS, "\n", 1, REPLACE);
tspace = PS;
PS = HS;
HS = tspace;
break;
case 'y':
if (pd)
break;
for (p = ps, len = psl; --len; ++p)
*p = cp->u.y[(int)*p];
break;
case ':':
case '}':
break;
case '=':
(void)printf("%lu\n", linenum);
}
cp = cp->next;
} /* for all cp */