[Teem-commit] SF.net SVN: teem:[7238] teem/trunk/src/air/miscAir. c

[<kin...@us...>]

Revision: 7238
          http://sourceforge.net/p/teem/code/7238
Author:   kindlmann
Date:     2024-09-19 20:03:20 +0000 (Thu, 19 Sep 2024)
Log Message:
-----------
added ability to recognize -= as the same stdin/stdout that - is recognized as

Modified Paths:
--------------
    teem/trunk/src/air/miscAir.c

Modified: teem/trunk/src/air/miscAir.c
===================================================================
--- teem/trunk/src/air/miscAir.c	2024-09-06 08:11:53 UTC (rev 7237)
+++ teem/trunk/src/air/miscAir.c	2024-09-19 20:03:20 UTC (rev 7238)
@@ -104,10 +104,14 @@
 /*
 ******** airFopen()
 **
-** encapsulates that idea that "-" is either standard in or stardard
-** out, and does McRosopht stuff required to make piping work
+** encapsulates that idea that "-" OR "-=" is either standard in or standard
+** out, and does McRosopht stuff required to make piping work. Handling "-="
+** is a convenience for implementing NrrdIoState->declineStdioOnTTY, with
+** the semantics (not handled here) that "-=" means "read/write from stdin/
+** stdout, even when it IS a terminal". But this is currently only supported
+** in full Teem, not the minimal NrrdIO library.
 **
-** Does not error checking.  If fopen fails, then C' errno and strerror are
+** Does no error checking.  If fopen fails, then C' errno and strerror are
 ** left untouched for the caller to access.
 */
 FILE *
@@ -114,7 +118,11 @@
 airFopen(const char *name, FILE *std, const char *mode) {
   FILE *ret;
 
-  if (!strcmp(name, "-")) {
+  if (!strcmp(name, "-")
+      /* ---- BEGIN non-NrrdIO */
+      || !strcmp(name, "-=")
+      /* ---- END non-NrrdIO */
+  ) {
     ret = std;
 #ifdef _WIN32
     if (strchr(mode, 'b')) {

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