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Disassembler: Print colour codes only when writing to a terminal

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This commit is contained in:
David Neto 2017-08-28 10:30:58 -04:00
parent d41a52415a
commit 1687bd3235
1 changed files with 12 additions and 2 deletions
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14
tools/dis/dis.cpp
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@ -12,6 +12,11 @@
// See the License for the specific language governing permissions and
// limitations under the License.
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#include <stdio.h> // Need fileno
#include <unistd.h>
#endif
#include <cstdio>
#include <cstring>
#include <string>
@ -39,7 +44,8 @@ Options:
not specified, or if the filename is "-".
--no-color Don't print in color.
The default when output goes to a file.
The default when output goes to something other than a
terminal (e.g. a file, a pipe, or a shell redirection).
--no-indent Don't indent instructions.
@ -142,7 +148,11 @@ int main(int argc, char** argv) {
if (!outFile || (0 == strcmp("-", outFile))) {
// Print to standard output.
options |= SPV_BINARY_TO_TEXT_OPTION_PRINT;
if (allow_color) {
bool output_is_tty = true;
#if defined(_POSIX_VERSION)
output_is_tty = isatty(fileno(stdout));
#endif
if (allow_color && output_is_tty) {
options |= SPV_BINARY_TO_TEXT_OPTION_COLOR;
}
}