//
// Open stream <f> for fast character input.
//
int fcfopen(Sfio_t *f) {
int n;
char *buff;
Fcin_t save;
errno = 0;
_Fcin.fcbuff = _Fcin.fcptr;
_Fcin._fcfile = f;
fcsave(&save);
if (!(buff = (char *)sfreserve(f, SF_UNBOUND, SF_LOCKR))) {
fcrestore(&save);
_Fcin.fcchar = 0;
_Fcin.fcptr = _Fcin.fcbuff = &_Fcin.fcchar;
_Fcin.fclast = NULL;
_Fcin._fcfile = NULL;
return EOF;
}
n = sfvalue(f);
fcrestore(&save);
sfread(f, buff, 0);
_Fcin.fcoff = sftell(f);
buff = (char *)sfreserve(f, SF_UNBOUND, SF_LOCKR);
_Fcin.fclast = (_Fcin.fcptr = _Fcin.fcbuff = (unsigned char *)buff) + n;
if (sffileno(f) >= 0) *_Fcin.fclast = 0;
return n;
}
tmain() {
UNUSED(argc);
UNUSED(argv);
Sfio_t *f1, *f2;
char *s;
Sfoff_t p;
char buf[1024];
int r, w;
if (!(f1 = sfopen(NULL, tstfile("sf", 0), "w"))) terror("Can't open f1");
if (!(f1 = sfopen(f1, tstfile("sf", 0), "a+"))) terror("Can't open f1");
if (!(f2 = sfopen(NULL, tstfile("sf", 0), "a+"))) terror("Can't open f2");
if (sfwrite(f1, "012345678\n", 10) != 10 || sfsync(f1) < 0) terror("Writing to f1");
if ((p = sftell(f1)) != 10) terror("Bad sftell1 %ld", p);
if (sfwrite(f2, "abcdefghi\n", 10) != 10 || sfsync(f2) < 0) terror("Writing to f2");
if ((p = sftell(f2)) != 20) terror("Bad sftell2");
if ((p = sfseek(f1, (Sfoff_t)0, 0)) != 0) terror("Bad seek");
if (!(s = sfgetr(f1, '\n', 1))) terror("Bad getr1");
if (strcmp(s, "012345678") != 0) terror("Bad input1");
if ((p = sftell(f1)) != 10) terror("Bad sftell3");
if (sfwrite(f1, "012345678\n", 10) != 10 || sfsync(f1) < 0) terror("Writing to f1");
if ((p = sftell(f1)) != 30) terror("Bad sftell4");
if ((p = sfseek(f2, (Sfoff_t)10, 0)) != 10) terror("Bad seek");
if (!(s = sfgetr(f2, '\n', 1))) terror("Bad getr2");
if (strcmp(s, "abcdefghi") != 0) terror("Bad input2");
if (!(s = sfgetr(f2, '\n', 1))) terror("Bad getr3");
if (strcmp(s, "012345678") != 0) terror("Bad input3");
if (!(f1 = sfopen(f1, tstfile("sf", 0), "w"))) terror("Can't open file to write");
for (r = 0; r < 1024; ++r) buf[r] = 'a';
if ((w = sfwrite(f1, buf, 1024)) != 1024) terror("writing w=%d", w);
if (!(f1 = sfopen(f1, tstfile("sf", 0), "a"))) terror("Can't open file to append");
sfseek(f1, (Sfoff_t)0, 0);
if ((w = sfwrite(f1, buf, 64)) != 64) terror("writing w=%d", w);
if ((r = (int)sftell(f1)) != (1024 + 64)) terror("seek position wrong s=%d", r);
texit(0);
}
Dssrecord_t*
dssfread(Dssfile_t* file)
{
int r;
file->count++;
file->offset += file->length;
if ((r = (*file->readf)(file, &file->record, file->dss->disc)) <= 0)
{
if (r < 0)
file->flags |= DSS_FILE_ERROR;
file->count--;
return 0;
}
file->length = sftell(file->io) - file->offset;
return &file->record;
}
/* is there stuff left? if not, go to next file */
static int advFile(generalStream_s *gs)
{
if (gs->fpLen == -1) {
int c = sfgetc(gs->fp);
if (c == EOF)
return 0;
sfungetc(gs->fp, c);
return 1;
} else {
if (sftell(gs->fp) == gs->fpLen) {
while (++gs->count < gs->numFilesinStream) {
HRSclosefile(gs->fp);
gs->fp = HRSopenfile(gs->fileNames[gs->count], "r");
gs->fpLen = sfsize(gs->fp);
if (gs->fpLen != 0)
return 1;
}
return 0;
}
return 1;
}
}
// This routine turns options on and off.
// The options "PDicr" are illegal from set command.
// The -o option is used to set option by name.
// This routine returns the number of non-option arguments.
int sh_argopts(int argc, char *argv[], void *context) {
Shell_t *shp = context;
int n, o;
Arg_t *ap = shp->arg_context;
Lex_t *lp = shp->lex_context;
Shopt_t newflags;
int setflag = 0, action = 0, trace = (int)sh_isoption(shp, SH_XTRACE);
Namval_t *np = NULL;
const char *sp;
char *keylist = NULL;
int verbose, f, unsetnp = 0;
Optdisc_t disc;
newflags = shp->options;
memset(&disc, 0, sizeof(disc));
disc.version = OPT_VERSION;
disc.infof = infof;
opt_info.disc = &disc;
if (argc > 0) {
setflag = 4;
} else {
argc = -argc;
}
while ((n = optget(argv, setflag ? sh_optset : sh_optksh))) {
o = 0;
f = *opt_info.option == '-' && (opt_info.num || opt_info.arg);
switch (n) {
case 'A': {
np = nv_open(opt_info.arg, shp->var_tree, NV_ARRAY | NV_VARNAME);
if (f) unsetnp = 1;
continue;
}
case 'K': {
keylist = opt_info.arg;
continue;
}
#if SHOPT_BASH
case 'O': { // shopt options, only in bash mode
if (!sh_isoption(shp, SH_BASH)) {
errormsg(SH_DICT, ERROR_exit(1), e_option, opt_info.name);
__builtin_unreachable();
}
}
#endif
// FALLTHRU
case 'o': { // set options
byname:
if (!opt_info.arg || !*opt_info.arg || *opt_info.arg == '-') {
action = PRINT;
// print style: -O => shopt options.
// bash => print unset options also, no heading.
verbose = (f ? PRINT_VERBOSE : PRINT_NO_HEADER) | (n == 'O' ? PRINT_SHOPT : 0) |
(sh_isoption(shp, SH_BASH) ? PRINT_ALL | PRINT_NO_HEADER : 0) |
((opt_info.arg && (!*opt_info.arg || *opt_info.arg == '-'))
? (PRINT_TABLE | PRINT_NO_HEADER)
: 0);
continue;
}
o = sh_lookopt(opt_info.arg, &f);
if (o <= 0 || (!sh_isoption(shp, SH_BASH) && (o & SH_BASHEXTRA)) ||
((!sh_isoption(shp, SH_BASH) || n == 'o') && (o & SH_BASHOPT))
|| (setflag && (o & SH_COMMANDLINE))) {
errormsg(SH_DICT, 2, e_option, opt_info.arg);
error_info.errors++;
}
o &= 0xff;
if (sh_isoption(shp, SH_RESTRICTED) && !f && o == SH_RESTRICTED) {
errormsg(SH_DICT, ERROR_exit(1), e_restricted, opt_info.arg);
__builtin_unreachable();
}
break;
}
#if SHOPT_BASH
case -1: { // --rcfile
shp->gd->rcfile = opt_info.arg;
continue;
}
case -2: { // --noediting
if (!f) {
off_option(&newflags, SH_VI);
off_option(&newflags, SH_EMACS);
off_option(&newflags, SH_GMACS);
}
continue;
}
case -3: { // --profile
n = 'l';
sp = strchr(optksh, n);
if (sp) o = flagval[sp - optksh];
break;
}
case -4: { // --posix
// Mask lower 8 bits to find char in optksh string.
n &= 0xff;
sp = strchr(optksh, n);
if (sp) o = flagval[sp - optksh];
break;
}
case -5: { // --version
sfputr(sfstdout, "ksh bash emulation, version ", -1);
np = nv_open("BASH_VERSION", shp->var_tree, 0);
sfputr(sfstdout, nv_getval(np), -1);
np = nv_open("MACHTYPE", shp->var_tree, 0);
sfprintf(sfstdout, " (%s)\n", nv_getval(np));
sh_exit(shp, 0);
}
#endif
case -6: { // --default
const Shtable_t *tp;
for (tp = shtab_options; (o = tp->sh_number); tp++) {
if (!(o & SH_COMMANDLINE) && is_option(&newflags, o & 0xff)) {
off_option(&newflags, o & 0xff);
}
}
continue;
}
case -7: {
f = 0;
goto byname;
}
case 'D': {
on_option(&newflags, SH_NOEXEC);
// Cppcheck doesn't recognize the "goto" in the preceding case and thus thinks we
// might fall through and call strchr() with n == -7. Even though this it
// technically a bug in cppcheck it is one reason why `goto` shouldn't be used; at
// least inside `switch` blocks.
// cppcheck-suppress invalidFunctionArg
sp = strchr(optksh, n);
if (sp) o = flagval[sp - optksh];
break;
}
case 'T': {
if (opt_info.num) {
shp->test |= opt_info.num;
} else {
shp->test = 0;
}
continue;
}
case 's': {
if (setflag) {
action = SORT;
continue;
}
sp = strchr(optksh, n);
if (sp) o = flagval[sp - optksh];
break;
}
case 'R': {
if (setflag) {
n = ':';
} else {
ap->kiafile = opt_info.arg;
n = 'n';
}
sp = strchr(optksh, n);
if (sp) o = flagval[sp - optksh];
break;
}
case ':': {
if (opt_info.name[0] == '-' && opt_info.name[1] == '-') {
opt_info.arg = argv[opt_info.index - 1] + 2;
f = 1;
goto byname;
}
errormsg(SH_DICT, 2, "%s", opt_info.arg);
continue;
}
case '?': {
errormsg(SH_DICT, ERROR_usage(0), "%s", opt_info.arg);
return -1;
}
default: {
sp = strchr(optksh, n);
if (sp) o = flagval[sp - optksh];
break;
}
}
if (f) {
if (o == SH_VI || o == SH_EMACS || o == SH_GMACS) {
off_option(&newflags, SH_VI);
off_option(&newflags, SH_EMACS);
off_option(&newflags, SH_GMACS);
}
on_option(&newflags, o);
off_option(&shp->offoptions, o);
} else {
if (o == SH_RESTRICTED && sh_isoption(shp, SH_RESTRICTED)) {
errormsg(SH_DICT, ERROR_exit(1), e_restricted, "r");
__builtin_unreachable();
}
if (o == SH_XTRACE) trace = 0;
off_option(&newflags, o);
if (setflag == 0) on_option(&shp->offoptions, o);
}
}
if (error_info.errors) {
errormsg(SH_DICT, ERROR_usage(2), "%s", optusage(NULL));
__builtin_unreachable();
}
// Check for '-' or '+' argument.
sp = argv[opt_info.index];
if (sp && sp[1] == 0 && (*sp == '+' || *sp == '-') && strcmp(argv[opt_info.index - 1], "--")) {
opt_info.index++;
off_option(&newflags, SH_XTRACE);
off_option(&newflags, SH_VERBOSE);
trace = 0;
}
if (trace) sh_trace(shp, argv, 1);
argc -= opt_info.index;
argv += opt_info.index;
if (action == PRINT) sh_printopts(shp, newflags, verbose, 0);
if (setflag) {
if (action == SORT) {
int (*sortfn)(const char *, const char *) = strcoll;
Namarr_t *arp;
struct Value *args;
unsigned char *bits;
if (argc > 0) {
strsort(argv, argc, sortfn);
} else if (np && (arp = nv_arrayptr(np)) && (args = nv_aivec(np, &bits))) {
char *cp;
int i, c, keys = 0;
if (keylist) {
for (cp = keylist; (c = *cp); cp++) {
if (c == ',') keys++;
}
keys++;
} else {
keylist = "";
}
arp->nelem = nv_aipack(arp);
cp = nv_name(np);
c = strlen(cp);
// This used to multiply by `(keys - 1)` but `keys` can be zero which means the
// nodesize can be less than `sizeof(struct Node)` which is obviously wrong.
// Whether multiplying by `keys` is correct is unclear.
// See issue #824.
size_t nodesize = sizeof(struct Node) + keys * sizeof(Namval_t *);
struct Sort *sp =
malloc(sizeof(struct Sort) + strlen(keylist) + (sizeof(char *) + 1) * keys +
(arp->nelem + 1) * (nodesize + sizeof(void *)) + c + 3);
sp->shp = shp;
sp->np = np;
if (!(sp->root = shp->last_root)) sp->root = shp->var_tree;
sp->vp = args;
sp->cur = 0;
sp->nodes = (struct Node *)&sp->keys[keys + 2];
memset(sp->nodes, 0, arp->nelem * nodesize);
sp->nptrs = (struct Node **)((char *)sp->nodes + arp->nelem * nodesize);
sp->flags = (char *)&sp->nptrs[arp->nelem + 1];
memset(sp->flags, 0, keys + 1);
sp->name = sp->flags + keys + 1;
memcpy(sp->name, cp, c + 1);
sp->keys[0] = sp->name + c + 1;
strcpy(sp->keys[0], keylist);
cp = (char *)sp->nodes;
for (c = 0; c < arp->nelem; c++) {
if (*keylist && *keylist != ':') {
struct Namval *np = FETCH_VT(args[c], np);
((struct Node *)cp)->index = strtol(np->nvname, NULL, 10);
((struct Node *)cp)->bits = bits[c];
} else {
((struct Node *)cp)->index = c;
}
((struct Node *)cp)->vp = args[c];
sp->nptrs[c] = (struct Node *)cp;
cp += nodesize;
}
if (!(cp = sp->keys[0])) cp = keylist;
for (keys = 0; (c = *cp); cp++) {
if (c == ',') {
*cp++ = 0;
sp->keys[++keys] = cp;
sp->flags[keys] = 0;
} else if (c == ':') {
again:
*cp++ = 0;
c = *cp;
if (c == 'r') {
sp->flags[keys] |= SORT_reverse;
c = cp[1];
} else if (c == 'n') {
sp->flags[keys] |= SORT_numeric;
c = cp[1];
}
if (c == 'n' || c == 'r') goto again;
}
}
sp->keys[++keys] = 0;
Sp = sp;
if (sp->keys[0] && *sp->keys[0]) {
sortfn = arraysort;
} else if (sp->flags[0] & SORT_numeric) {
sortfn = numsort;
} else {
sortfn = alphasort;
}
strsort((char **)sp->nptrs, arp->nelem, sortfn);
cp = (char *)sp->nodes;
for (c = 0; c < arp->nelem; c++) {
i = (char *)sp->nptrs[c] - (char *)&sp->nodes[0];
if (i / nodesize != c) {
args[c] = ((struct Node *)(cp + i))->vp;
bits[c] = ((struct Node *)(cp + i))->bits;
}
}
free(sp);
nv_close(np);
np = NULL;
} else {
strsort(shp->st.dolv + 1, shp->st.dolc, sortfn);
}
}
if (np) {
if (unsetnp) nv_unset(np);
nv_setvec(np, 0, argc, argv);
nv_close(np);
} else if (argc > 0 || ((sp = argv[-1]) && strcmp(sp, "--") == 0)) {
sh_argset(ap, argv - 1);
}
} else if (is_option(&newflags, SH_CFLAG)) {
if (!(shp->comdiv = *argv++)) {
errormsg(SH_DICT, 2, e_cneedsarg);
errormsg(SH_DICT, ERROR_usage(2), optusage(NULL));
__builtin_unreachable();
}
argc--;
}
// Handling SH_INTERACTIVE and SH_PRIVILEGED has been moved to
// sh_applyopts(), so that the code can be reused from b_shopt(), too.
sh_applyopts(shp, newflags);
if (!ap->kiafile) return argc;
if (!argv[0]) {
errormsg(SH_DICT, ERROR_usage(2), "-R requires scriptname");
__builtin_unreachable();
}
if (!(lp->kiafile = sfopen(NULL, ap->kiafile, "w+"))) {
errormsg(SH_DICT, ERROR_system(3), e_create, ap->kiafile);
__builtin_unreachable();
}
if (!(lp->kiatmp = sftmp(2 * SF_BUFSIZE))) {
errormsg(SH_DICT, ERROR_system(3), e_tmpcreate);
__builtin_unreachable();
}
sfputr(lp->kiafile, ";vdb;CIAO/ksh", '\n');
lp->kiabegin = sftell(lp->kiafile);
lp->entity_tree = dtopen(&_Nvdisc, Dtbag);
lp->scriptname = strdup(sh_fmtq(argv[0]));
lp->script = kiaentity(lp, lp->scriptname, -1, 'p', -1, 0, 0, 's', 0, "");
lp->fscript = kiaentity(lp, lp->scriptname, -1, 'f', -1, 0, 0, 's', 0, "");
lp->unknown = kiaentity(lp, "<unknown>", -1, 'p', -1, 0, 0, '0', 0, "");
kiaentity(lp, "<unknown>", -1, 'p', 0, 0, lp->unknown, '0', 0, "");
lp->current = lp->script;
ap->kiafile = NULL;
return argc;
}
int
sfdcpzip(Sfio_t* sp, const char* path, unsigned long flags, Pzdisc_t* disc)
{
Sfio_t* io;
Sfpzip_t* pz;
Pz_t* oz;
if (flags & PZ_HANDLE)
{
oz = (Pz_t*)sp;
sp = oz->io;
}
else
oz = 0;
if (sfset(sp, 0, 0) & SF_WRITE)
{
if (flags & PZ_STAT)
return -1;
}
else if (!(flags & PZ_FORCE))
{
unsigned char* s;
int r;
int m1;
int m2;
if (!(r = sfset(sp, 0, 0) & SF_SHARE))
sfset(sp, SF_SHARE, 1);
s = (unsigned char*)sfreserve(sp, PZ_GZ_MAGOFF + 2, 1);
if (!r)
sfset(sp, SF_SHARE, 0);
if (!s)
return -1;
m1 = s[0];
m2 = s[1];
r = m1 == PZ_MAGIC_1 && m2 == PZ_MAGIC_2 && s[2] > 0 && s[3] < 10 ||
m1 == GZ_MAGIC_1 && m2 == GZ_MAGIC_2 &&
s[PZ_GZ_MAGOFF] == PZ_GZ_MAGIC_1 && s[PZ_GZ_MAGOFF+1] == PZ_GZ_MAGIC_2;
sfread(sp, s, 0);
if (flags & PZ_STAT)
return r;
if (!r)
{
if (!(flags & PZ_NOGZIP))
{
if (m1 == GZ_MAGIC_1)
{
if (m2 == GZ_MAGIC_2)
r = sfdcgzip(sp, (flags & PZ_CRC) ? 0 : SFGZ_NOCRC);
else if (m2 == LZ_MAGIC_2)
r = sfdclzw(sp, 0);
}
else if (m1 == 'B' && m2 == 'Z' && s[2] == 'h' && s[3] >= '1' && s[3] <= '9')
r = sfdcbzip(sp, 0);
}
return r;
}
sfsync(sp);
}
if (!(io = sfnew(NiL, NiL, SF_UNBOUND, sffileno(sp), (sfset(sp, 0, 0) & (SF_READ|SF_WRITE)))))
return -1;
if (!(pz = newof(0, Sfpzip_t, 1, 0)))
{
io->_file = -1;
sfclose(io);
return -1;
}
pz->disc.version = PZ_VERSION;
flags &= ~(PZ_READ|PZ_WRITE|PZ_STAT|PZ_STREAM|PZ_INTERNAL);
flags |= PZ_PUSHED|PZ_STREAM|((sfset(sp, 0, 0) & SF_READ) ? PZ_READ : PZ_WRITE);
if (oz && (oz->flags & PZ_WRITE))
flags |= PZ_DELAY;
if (disc)
{
pz->disc.errorf = disc->errorf;
pz->disc.window = disc->window;
pz->disc.options = disc->options;
pz->disc.partition = disc->partition;
if (disc->splitf)
flags |= PZ_ACCEPT;
}
if (!(pz->pz = pzopen(&pz->disc, (char*)io, flags)) || (sp->_file = open("/dev/null", 0)) < 0)
{
io->_file = -1;
sfclose(io);
free(pz);
return -1;
}
if (path)
pz->pz->path = path;
pz->sfdisc.exceptf = sfpzexcept;
if (flags & PZ_WRITE)
{
pz->sfdisc.writef = sfpzwrite;
pz->io = io;
}
else
pz->sfdisc.readf = sfpzread;
sfset(sp, SF_SHARE|SF_PUBLIC, 0);
if (sfdisc(sp, &pz->sfdisc) != &pz->sfdisc)
{
close(sp->_file);
sp->_file = io->_file;
sfseek(sp, sftell(io), SEEK_SET);
io->_file = -1;
pzclose(pz->pz);
free(pz);
return -1;
}
if (oz)
oz->flags |= pz->pz->flags & PZ_INTERNAL;
return 1;
}
/*
* This routine will turn the sftmp() file into a real /tmp file or pipe
*/
void sh_subtmpfile(int pflag)
{
Shell_t *shp = &sh;
int fds[2];
Sfoff_t off;
register struct checkpt *pp = (struct checkpt*)shp->jmplist;
register struct subshell *sp = subshell_data->pipe;
if(sfset(sfstdout,0,0)&SF_STRING)
{
register int fd;
/* save file descriptor 1 if open */
if((sp->tmpfd = fd = fcntl(1,F_DUPFD,10)) >= 0)
{
fcntl(fd,F_SETFD,FD_CLOEXEC);
shp->fdstatus[fd] = shp->fdstatus[1]|IOCLEX;
close(1);
shp->fdstatus[1] = IOCLOSE;
}
else if(errno!=EBADF)
{
((struct checkpt*)shp->jmplist)->mode = SH_JMPERREXIT;
shp->toomany = 1;
errormsg(SH_DICT,ERROR_system(1),e_toomany);
}
if(shp->subshare || !pflag)
{
sfdisc(sfstdout,SF_POPDISC);
if((fd=sffileno(sfstdout))>=0)
{
shp->fdstatus[fd] = IOREAD|IOWRITE;
sfsync(sfstdout);
if(fd==1)
fcntl(1,F_SETFD,0);
else
{
sfsetfd(sfstdout,1);
shp->fdstatus[1] = shp->fdstatus[fd];
shp->fdstatus[fd] = IOCLOSE;
}
goto skip;
}
}
}
if(sp && (shp->fdstatus[1]==IOCLOSE || (!shp->subshare && !(shp->fdstatus[1]&IONOSEEK))))
{
struct stat statb,statx;
int fd;
sh_pipe(fds);
sp->pipefd = fds[0];
sh_fcntl(sp->pipefd,F_SETFD,FD_CLOEXEC);
/* write the data to the pipe */
if(off = sftell(sfstdout))
{
write(fds[1],sfsetbuf(sfstdout,(Void_t*)sfstdout,0),(size_t)off);
sfpurge(sfstdout);
}
if((sfset(sfstdout,0,0)&SF_STRING) || fstat(1,&statb)<0)
statb.st_ino = 0;
sfclose(sfstdout);
if((sh_fcntl(fds[1],F_DUPFD, 1)) != 1)
errormsg(SH_DICT,ERROR_system(1),e_redirect);
sh_close(fds[1]);
if(statb.st_ino) for(fd=0; fd < 10; fd++)
{
if(fd==1 || ((shp->fdstatus[fd]&(IONOSEEK|IOSEEK|IOWRITE))!=(IOSEEK|IOWRITE)) || fstat(fd,&statx)<0)
continue;
if(statb.st_ino==statx.st_ino && statb.st_dev==statx.st_dev)
{
sh_close(fd);
fcntl(1,F_DUPFD, fd);
}
}
skip:
sh_iostream(shp,1);
sfset(sfstdout,SF_SHARE|SF_PUBLIC,1);
sfpool(sfstdout,shp->outpool,SF_WRITE);
if(pp && pp->olist && pp->olist->strm == sfstdout)
pp->olist->strm = 0;
}
}
main(int argc, char *argv[])
{
register int n;
register char *cp;
Sfio_t *in, *out;
error_info.id = argv[0];
NoP(id[0]);
#if _AST_VERSION >= 20060701L
cmdinit(argc, argv,0, NULL, 0);
#else
cmdinit(argv,0, NULL, 0);
#endif
while (n = optget(argv, " [file ...]")) switch (n)
{
case ':':
error(2, opt_info.arg);
break;
case '?':
error(ERROR_usage(2), opt_info.arg);
break;
}
argv += opt_info.index;
if(error_info.errors)
error(ERROR_usage(2),optusage((char*)0));
if(cp = *argv)
argv++;
do
{
if(!cp || strcmp(cp,"-")==0)
{
in = sfstdin;
out = sfstdout;
}
else
{
if(!(in = sfopen((Sfio_t*)0,cp,"rb")))
{
error(ERROR_system(0),"%s: cannot open for input",cp);
error_info.errors = 1;
continue;
}
if(!(out = sfopen((Sfio_t*)0,cp,"r+b")))
{
error(ERROR_system(0),"%s: cannot open for writing",cp);
error_info.errors = 1;
continue;
}
}
nocrnl(in,out);
if(in!=sfstdin)
sfclose(in);
if(out!=sfstdout)
{
sfsync(out);
ftruncate(sffileno(out),sftell(out));
sfclose(out);
}
}
while(cp= *argv++);
return(error_info.errors);
}
int hist_expand(const char *ln, char **xp)
{
int off, /* stack offset */
q, /* quotation flags */
p, /* flag */
c, /* current char */
flag=0; /* HIST_* flags */
Sfoff_t n, /* history line number, counter, etc. */
i, /* counter */
w[2]; /* word range */
char *sp, /* stack pointer */
*cp, /* current char in ln */
*str, /* search string */
*evp, /* event/word designator string, for error msgs */
*cc=0, /* copy of current line up to cp; temp ptr */
hc[3], /* default histchars */
*qc="\'\"`"; /* quote characters */
Sfio_t *ref=0, /* line referenced by event designator */
*tmp=0, /* temporary line buffer */
*tmp2=0;/* temporary line buffer */
Histloc_t hl; /* history location */
static Namval_t *np = 0; /* histchars variable */
static struct subst sb = {0,0}; /* substition strings */
static Sfio_t *wm=0; /* word match from !?string? event designator */
if(!wm)
wm = sfopen(NULL, NULL, "swr");
hc[0] = '!';
hc[1] = '^';
hc[2] = 0;
if((np = nv_open("histchars",sh.var_tree,0)) && (cp = nv_getval(np)))
{
if(cp[0])
{
hc[0] = cp[0];
if(cp[1])
{
hc[1] = cp[1];
if(cp[2])
hc[2] = cp[2];
}
}
}
/* save shell stack */
if(off = staktell())
sp = stakfreeze(0);
cp = (char*)ln;
while(cp && *cp)
{
/* read until event/quick substitution/comment designator */
if((*cp != hc[0] && *cp != hc[1] && *cp != hc[2])
|| (*cp == hc[1] && cp != ln))
{
if(*cp == '\\') /* skip escaped designators */
stakputc(*cp++);
else if(*cp == '\'') /* skip quoted designators */
{
do
stakputc(*cp);
while(*++cp && *cp != '\'');
}
stakputc(*cp++);
continue;
}
if(hc[2] && *cp == hc[2]) /* history comment designator, skip rest of line */
{
stakputc(*cp++);
stakputs(cp);
DONE();
}
n = -1;
str = 0;
flag &= HIST_EVENT; /* save event flag for returning later */
evp = cp;
ref = 0;
if(*cp == hc[1]) /* shortcut substitution */
{
flag |= HIST_QUICKSUBST;
goto getline;
}
if(*cp == hc[0] && *(cp+1) == hc[0]) /* refer to line -1 */
{
cp += 2;
goto getline;
}
switch(c = *++cp) {
case ' ':
case '\t':
case '\n':
case '\0':
case '=':
case '(':
stakputc(hc[0]);
continue;
case '#': /* the line up to current position */
flag |= HIST_HASH;
cp++;
n = staktell(); /* terminate string and dup */
stakputc('\0');
cc = strdup(stakptr(0));
stakseek(n); /* remove null byte again */
ref = sfopen(ref, cc, "s"); /* open as file */
n = 0; /* skip history file referencing */
break;
case '-': /* back reference by number */
if(!isdigit(*(cp+1)))
goto string_event;
cp++;
case '0': /* reference by number */
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
n = 0;
while(isdigit(*cp))
n = n * 10 + (*cp++) - '0';
if(c == '-')
n = -n;
break;
case '$':
n = -1;
case ':':
break;
case '?':
cp++;
flag |= HIST_QUESTION;
string_event:
default:
/* read until end of string or word designator/modifier */
str = cp;
while(*cp)
{
cp++;
if((!(flag&HIST_QUESTION) &&
(*cp == ':' || isspace(*cp)
|| *cp == '^' || *cp == '$'
|| *cp == '*' || *cp == '-'
|| *cp == '%')
)
|| ((flag&HIST_QUESTION) && (*cp == '?' || *cp == '\n')))
{
c = *cp;
*cp = '\0';
}
}
break;
}
getline:
flag |= HIST_EVENT;
if(str) /* !string or !?string? event designator */
{
/* search history for string */
hl = hist_find(shgd->hist_ptr, str,
shgd->hist_ptr->histind,
flag&HIST_QUESTION, -1);
if((n = hl.hist_command) == -1)
n = 0; /* not found */
}
if(n)
{
if(n < 0) /* determine index for backref */
n = shgd->hist_ptr->histind + n;
/* search and use history file if found */
if(n > 0 && hist_seek(shgd->hist_ptr, n) != -1)
ref = shgd->hist_ptr->histfp;
}
if(!ref)
{
/* string not found or command # out of range */
c = *cp;
*cp = '\0';
errormsg(SH_DICT, ERROR_ERROR, "%s: event not found", evp);
*cp = c;
DONE();
}
if(str) /* string search: restore orig. line */
{
if(flag&HIST_QUESTION)
*cp++ = c; /* skip second question mark */
else
*cp = c;
}
/* colon introduces either word designators or modifiers */
if(*(evp = cp) == ':')
cp++;
w[0] = 0; /* -1 means last word, -2 means match from !?string? */
w[1] = -1; /* -1 means last word, -2 means suppress last word */
if(flag & HIST_QUICKSUBST) /* shortcut substitution */
goto getsel;
n = 0;
while(n < 2)
{
switch(c = *cp++) {
case '^': /* first word */
if(n == 0)
{
w[0] = w[1] = 1;
goto skip;
}
else
goto skip2;
case '$': /* last word */
w[n] = -1;
goto skip;
case '%': /* match from !?string? event designator */
if(n == 0)
{
if(!str)
{
w[0] = 0;
w[1] = -1;
ref = wm;
}
else
{
w[0] = -2;
w[1] = sftell(ref) + hl.hist_char;
}
sfseek(wm, 0, SEEK_SET);
goto skip;
}
default:
skip2:
cp--;
n = 2;
break;
case '*': /* until last word */
if(n == 0)
w[0] = 1;
w[1] = -1;
skip:
flag |= HIST_WORDDSGN;
n = 2;
break;
case '-': /* until last word or specified index */
w[1] = -2;
flag |= HIST_WORDDSGN;
n = 1;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': /* specify index */
if((*evp == ':') || w[1] == -2)
{
w[n] = c - '0';
while(isdigit(c=*cp++))
w[n] = w[n] * 10 + c - '0';
flag |= HIST_WORDDSGN;
if(n == 0)
w[1] = w[0];
n++;
}
else
n = 2;
cp--;
break;
}
}
if(w[0] != -2 && w[1] > 0 && w[0] > w[1])
{
c = *cp;
*cp = '\0';
errormsg(SH_DICT, ERROR_ERROR, "%s: bad word specifier", evp);
*cp = c;
DONE();
}
/* no valid word designator after colon, rewind */
if(!(flag & HIST_WORDDSGN) && (*evp == ':'))
cp = evp;
getsel:
/* open temp buffer, let sfio do the (re)allocation */
tmp = sfopen(NULL, NULL, "swr");
/* push selected words into buffer, squash
whitespace into single blank or a newline */
n = i = q = 0;
while((c = sfgetc(ref)) > 0)
{
if(isspace(c))
{
flag |= (c == '\n' ? HIST_NEWLINE : 0);
continue;
}
if(n >= w[0] && ((w[0] != -2) ? (w[1] < 0 || n <= w[1]) : 1))
{
if(w[0] < 0)
sfseek(tmp, 0, SEEK_SET);
else
i = sftell(tmp);
if(i > 0)
sfputc(tmp, flag & HIST_NEWLINE ? '\n' : ' ');
flag &= ~HIST_NEWLINE;
p = 1;
}
else
p = 0;
do
{
cc = strchr(qc, c);
q ^= cc ? 1<<(int)(cc - qc) : 0;
if(p)
sfputc(tmp, c);
}
while((c = sfgetc(ref)) > 0 && (!isspace(c) || q));
if(w[0] == -2 && sftell(ref) > w[1])
break;
flag |= (c == '\n' ? HIST_NEWLINE : 0);
n++;
}
if(w[0] != -2 && w[1] >= 0 && w[1] >= n)
{
c = *cp;
*cp = '\0';
errormsg(SH_DICT, ERROR_ERROR, "%s: bad word specifier", evp);
*cp = c;
DONE();
}
else if(w[1] == -2) /* skip last word */
sfseek(tmp, i, SEEK_SET);
/* remove trailing newline */
if(sftell(tmp))
{
sfseek(tmp, -1, SEEK_CUR);
if(sfgetc(tmp) == '\n')
sfungetc(tmp, '\n');
}
sfputc(tmp, '\0');
if(str)
{
if(wm)
sfclose(wm);
wm = tmp;
}
if(cc && (flag&HIST_HASH))
{
/* close !# temp file */
sfclose(ref);
flag &= ~HIST_HASH;
free(cc);
cc = 0;
}
evp = cp;
/* selected line/words are now in buffer, now go for the modifiers */
while(*cp == ':' || (flag & HIST_QUICKSUBST))
{
if(flag & HIST_QUICKSUBST)
{
flag &= ~HIST_QUICKSUBST;
c = 's';
cp--;
}
else
c = *++cp;
sfseek(tmp, 0, SEEK_SET);
tmp2 = sfopen(tmp2, NULL, "swr");
if(c == 'g') /* global substitution */
{
flag |= HIST_GLOBALSUBST;
c = *++cp;
}
if(cc = strchr(modifiers, c))
flag |= mod_flags[cc - modifiers];
else
{
errormsg(SH_DICT, ERROR_ERROR, "%c: unrecognized history modifier", c);
DONE();
}
if(c == 'h' || c == 'r') /* head or base */
{
n = -1;
while((c = sfgetc(tmp)) > 0)
{ /* remember position of / or . */
if((c == '/' && *cp == 'h') || (c == '.' && *cp == 'r'))
n = sftell(tmp2);
sfputc(tmp2, c);
}
if(n > 0)
{ /* rewind to last / or . */
sfseek(tmp2, n, SEEK_SET);
/* end string there */
sfputc(tmp2, '\0');
}
}
else if(c == 't' || c == 'e') /* tail or suffix */
{
n = 0;
while((c = sfgetc(tmp)) > 0)
{ /* remember position of / or . */
if((c == '/' && *cp == 't') || (c == '.' && *cp == 'e'))
n = sftell(tmp);
}
/* rewind to last / or . */
sfseek(tmp, n, SEEK_SET);
/* copy from there on */
while((c = sfgetc(tmp)) > 0)
sfputc(tmp2, c);
}
else if(c == 's' || c == '&')
{
cp++;
if(c == 's')
{
/* preset old with match from !?string? */
if(!sb.str[0] && wm)
sb.str[0] = strdup(sfsetbuf(wm, (Void_t*)1, 0));
cp = parse_subst(cp, &sb);
}
if(!sb.str[0] || !sb.str[1])
{
c = *cp;
*cp = '\0';
errormsg(SH_DICT, ERROR_ERROR,
"%s%s: no previous substitution",
(flag & HIST_QUICKSUBST) ? ":s" : "",
evp);
*cp = c;
DONE();
}
/* need pointer for strstr() */
str = sfsetbuf(tmp, (Void_t*)1, 0);
flag |= HIST_SUBSTITUTE;
while(flag & HIST_SUBSTITUTE)
{
/* find string */
if(cc = strstr(str, sb.str[0]))
{ /* replace it */
c = *cc;
*cc = '\0';
sfputr(tmp2, str, -1);
sfputr(tmp2, sb.str[1], -1);
*cc = c;
str = cc + strlen(sb.str[0]);
}
else if(!sftell(tmp2))
{ /* not successfull */
c = *cp;
*cp = '\0';
errormsg(SH_DICT, ERROR_ERROR,
"%s%s: substitution failed",
(flag & HIST_QUICKSUBST) ? ":s" : "",
evp);
*cp = c;
DONE();
}
/* loop if g modifier specified */
if(!cc || !(flag & HIST_GLOBALSUBST))
flag &= ~HIST_SUBSTITUTE;
}
/* output rest of line */
sfputr(tmp2, str, -1);
if(*cp)
cp--;
}
if(sftell(tmp2))
{ /* if any substitions done, swap buffers */
if(wm != tmp)
sfclose(tmp);
tmp = tmp2;
tmp2 = 0;
}
cc = 0;
if(*cp)
cp++;
}
/* flush temporary buffer to stack */
if(tmp)
{
sfseek(tmp, 0, SEEK_SET);
if(flag & HIST_QUOTE)
stakputc('\'');
while((c = sfgetc(tmp)) > 0)
{
if(isspace(c))
{
flag = flag & ~HIST_NEWLINE;
/* squash white space to either a
blank or a newline */
do
flag |= (c == '\n' ? HIST_NEWLINE : 0);
while((c = sfgetc(tmp)) > 0 && isspace(c));
sfungetc(tmp, c);
c = (flag & HIST_NEWLINE) ? '\n' : ' ';
if(flag & HIST_QUOTE_BR)
{
stakputc('\'');
stakputc(c);
stakputc('\'');
}
else
stakputc(c);
}
else if((c == '\'') && (flag & HIST_QUOTE))
{
stakputc('\'');
stakputc('\\');
stakputc(c);
stakputc('\'');
}
else
stakputc(c);
}
if(flag & HIST_QUOTE)
stakputc('\'');
}
}
stakputc('\0');
done:
if(cc && (flag&HIST_HASH))
{
/* close !# temp file */
sfclose(ref);
free(cc);
cc = 0;
}
/* error? */
if(staktell() && !(flag & HIST_ERROR))
*xp = strdup(stakfreeze(1));
/* restore shell stack */
if(off)
stakset(sp,off);
else
stakseek(0);
/* drop temporary files */
if(tmp && tmp != wm)
sfclose(tmp);
if(tmp2)
sfclose(tmp2);
return (flag & HIST_ERROR ? HIST_ERROR : flag & HIST_FLAG_RETURN_MASK);
}
