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asn1c
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suppress binary output to a terminal

This commit is contained in:
Lev Walkin 2017-08-26 23:31:58 -07:00
parent a4a87215b5
commit 7bb9d5b167
1 changed files with 21 additions and 5 deletions
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26
skeletons/converter-sample.c
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@ -87,6 +87,7 @@ DEBUG(const char *fmt, ...) {
int
main(int ac, char *av[]) {
FILE *binary_out;
static asn_TYPE_descriptor_t *pduType = &PDU_Type;
ssize_t suggested_bufsize = 8192; /* close or equal to stdio buffer */
int number_of_iterations = 1;
@ -271,6 +272,21 @@ main(int ac, char *av[]) {
exit(EX_USAGE);
}
if(isatty(1)) {
const int is_text_output = oform == OUT_TEXT || oform == OUT_XER;
if(is_text_output) {
binary_out = stdout;
} else {
fprintf(stderr, "(Suppressing binary output to a terminal.)\n");
binary_out = fopen("/dev/null", "wb");
if(!binary_out) {
fprintf(stderr, "Can't open /dev/null: %s\n", strerror(errno));
exit(EX_OSERR);
}
}
} else {
binary_out = stdout;
}
setvbuf(stdout, 0, _IOLBF, 0);
for(num = 0; num < number_of_iterations; num++) {
@ -332,7 +348,7 @@ main(int ac, char *av[]) {
}
break;
case OUT_DER:
erv = der_encode(pduType, structure, write_out, stdout);
erv = der_encode(pduType, structure, write_out, binary_out);
if(erv.encoded < 0) {
fprintf(stderr, "%s: Cannot convert %s into DER\n", name,
pduType->name);
@ -344,7 +360,7 @@ main(int ac, char *av[]) {
#ifdef ASN_DISABLE_OER_SUPPORT
erv.encoded = -1;
#else
erv = oer_encode(pduType, structure, write_out, stdout);
erv = oer_encode(pduType, structure, write_out, binary_out);
#endif
if(erv.encoded < 0) {
fprintf(stderr, "%s: Cannot convert %s into oER\n", name,
@ -357,7 +373,7 @@ main(int ac, char *av[]) {
#ifdef ASN_DISABLE_PER_SUPPORT
erv.encoded = -1;
#else
erv = uper_encode(pduType, structure, write_out, stdout);
erv = uper_encode(pduType, structure, write_out, binary_out);
#endif
if(erv.encoded < 0) {
fprintf(stderr,
@ -367,9 +383,9 @@ main(int ac, char *av[]) {
}
DEBUG("Encoded in %ld bits of UPER", (long)erv.encoded);
break;
}
}
ASN_STRUCT_FREE(*pduType, structure);
ASN_STRUCT_FREE(*pduType, structure);
}
if(file && file != stdin) {