/* maps to mod_mime_magic::apprentice */
static int
fmm_parse_magic_file(PerlFMM *state, char *file)
{
int ws_offset;
int lineno;
int errs;
/* char line[BUFSIZ + 1];*/
PerlIO *fhandle;
SV *err;
SV *sv = sv_2mortal(newSV(BUFSIZ));
SV *PL_rs_orig = newSVsv(PL_rs);
char *line;
fhandle = PerlIO_open(file, "r");
if (! fhandle) {
err = newSVpvf(
"Failed to open %s: %s", file, strerror(errno));
FMM_SET_ERROR(state, err);
PerlIO_close(fhandle);
return -1;
}
/*
* Parse it line by line
* $/ (slurp mode) is needed here
*/
PL_rs = sv_2mortal(newSVpvn("\n", 1));
for(lineno = 1; sv_gets(sv, fhandle, 0) != NULL; lineno++) {
line = SvPV_nolen(sv);
/* delete newline */
if (line[0]) {
line[strlen(line) - 1] = '\0';
}
/* skip leading whitespace */
ws_offset = 0;
while (line[ws_offset] && isSPACE(line[ws_offset])) {
ws_offset++;
}
/* skip blank lines */
if (line[ws_offset] == 0) {
continue;
}
if (line[ws_offset] == '#') {
continue;
}
if (fmm_parse_magic_line(state, line, lineno) != 0) {
++errs;
}
}
PerlIO_close(fhandle);
PL_rs = PL_rs_orig;
return 1;
}
/* maxlen 0 = read one text line */
I32
Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen)
{
filter_t funcp;
SV *datasv = NULL;
if (!PL_rsfp_filters)
return -1;
if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */
/* Provide a default input filter to make life easy. */
/* Note that we append to the line. This is handy. */
DEBUG_P(PerlIO_printf(Perl_debug_log,
"filter_read %d: from rsfp\n", idx));
if (maxlen) {
/* Want a block */
int len ;
const int old_len = SvCUR(buf_sv);
/* ensure buf_sv is large enough */
SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ;
if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
if (PerlIO_error(PL_rsfp))
return -1; /* error */
else
return 0 ; /* end of file */
}
SvCUR_set(buf_sv, old_len + len) ;
} else {
/* Want a line */
if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) {
if (PerlIO_error(PL_rsfp))
return -1; /* error */
else
return 0 ; /* end of file */
}
}
return SvCUR(buf_sv);
}
/* Skip this filter slot if filter has been deleted */
if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) {
DEBUG_P(PerlIO_printf(Perl_debug_log,
"filter_read %d: skipped (filter deleted)\n",
idx));
return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
}
/* Get function pointer hidden within datasv */
funcp = DPTR2FPTR(filter_t, IoANY(datasv));
DEBUG_P(PerlIO_printf(Perl_debug_log,
"filter_read %d: via function %p (%s)\n",
idx, datasv, SvPV_nolen_const(datasv)));
/* Call function. The function is expected to */
/* call "FILTER_READ(idx+1, buf_sv)" first. */
/* Return: <0:error, =0:eof, >0:not eof */
return (*funcp)(aTHX_ idx, buf_sv, maxlen);
}
STATIC char *
S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append)
{
#ifdef PERL_CR_FILTER
if (!PL_rsfp_filters) {
filter_add(S_cr_textfilter,NULL);
}
#endif
if (PL_rsfp_filters) {
if (!append)
SvCUR_set(sv, 0); /* start with empty line */
if (FILTER_READ(0, sv, 0) > 0)
return ( SvPVX(sv) ) ;
else
return Nullch ;
}
else
return (sv_gets(sv, fp, append));
}
OP *
Perl_do_readline(pTHX_ GV* gv)
{
dVAR; dSP; dTARGETSTACKED;
register SV *sv;
STRLEN tmplen = 0;
STRLEN offset;
PerlIO *fp;
register IO * const io = GvIO(gv);
register const I32 type = PL_op->op_type;
const I32 gimme = GIMME_V;
PERL_ARGS_ASSERT_DO_READLINE;
fp = NULL;
if (io) {
fp = IoIFP(io);
if (!fp) {
if (IoFLAGS(io) & IOf_ARGV) {
if (IoFLAGS(io) & IOf_START) {
IoLINES(io) = 0;
if (av_len(GvAVn(gv)) < 0) {
IoFLAGS(io) &= ~IOf_START;
do_openn(io,"-",1,FALSE,O_RDONLY,0,NULL,NULL,0);
sv_setpvn(GvSVn(gv), "-", 1);
SvSETMAGIC(GvSV(gv));
fp = IoIFP(io);
goto have_fp;
}
}
fp = nextargv(gv);
if (!fp) { /* Note: fp != IoIFP(io) */
(void)do_close(gv, FALSE); /* now it does*/
}
}
}
else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) {
report_evil_fh(io, OP_phoney_OUTPUT_ONLY);
}
}
if (!fp) {
if ((!io || !(IoFLAGS(io) & IOf_START))
&& ckWARN2(WARN_GLOB, WARN_CLOSED))
{
if (type == OP_GLOB)
Perl_warner(aTHX_ packWARN(WARN_GLOB),
"glob failed (can't start child: %s)",
Strerror(errno));
else
report_evil_fh(io, PL_op->op_type);
}
if (gimme == G_SCALAR) {
/* undef TARG, and push that undefined value */
if (type != OP_RCATLINE) {
SV_CHECK_THINKFIRST_COW_DROP(TARG);
if ( ! SvPVOK(TARG) )
sv_upgrade(TARG, SVt_PV);
SvOK_off(TARG);
}
PUSHTARG;
}
RETURN;
}
have_fp:
if (gimme == G_SCALAR) {
sv = TARG;
if (type == OP_RCATLINE) {
NOOP;
}
else {
if ( SvOK(sv) && ! SvPVOK(sv) )
sv_clear_body(sv);
}
if (SvROK(sv)) {
if (type == OP_RCATLINE)
SvPV_force_nolen(sv);
else
sv_unref(sv);
}
else if (isGV_with_GP(sv)) {
SvPV_force_nolen(sv);
}
SvUPGRADE(sv, SVt_PV);
tmplen = SvLEN(sv); /* remember if already alloced */
if (!tmplen && !SvREADONLY(sv))
Sv_Grow(sv, 80); /* try short-buffering it */
offset = 0;
if (type == OP_RCATLINE && SvOK(sv)) {
if (!SvPOK(sv)) {
SvPV_force_nolen(sv);
}
offset = SvCUR(sv);
}
}
else {
sv = sv_2mortal(newSV(80));
offset = 0;
}
/* delay EOF state for a snarfed empty file */
#define SNARF_EOF(gimme,rs,io,sv) \
(gimme != G_SCALAR || SvCUR(sv) \
|| (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs))
for (;;) {
PUTBACK;
if (!sv_gets(sv, fp, offset)
&& (type == OP_GLOB
|| SNARF_EOF(gimme, PL_rs, io, sv)
|| PerlIO_error(fp)))
{
PerlIO_clearerr(fp);
if (IoFLAGS(io) & IOf_ARGV) {
fp = nextargv(gv);
if (fp)
continue;
(void)do_close(gv, FALSE);
}
else if (type == OP_GLOB) {
if (!do_close(gv, FALSE) && ckWARN(WARN_GLOB)) {
Perl_warner(aTHX_ packWARN(WARN_GLOB),
"glob failed (child exited with status %d%s)",
(int)(STATUS_CURRENT >> 8),
(STATUS_CURRENT & 0x80) ? ", core dumped" : "");
}
}
if (gimme == G_SCALAR) {
if (type != OP_RCATLINE) {
SV_CHECK_THINKFIRST_COW_DROP(TARG);
SvOK_off(TARG);
}
SPAGAIN;
PUSHTARG;
}
RETURN;
}
