[Teem-commit] SF.net SVN: teem:[7509] teem/trunk/src/air

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

Revision: 7509
          http://sourceforge.net/p/teem/code/7509
Author:   kindlmann
Date:     2025-09-28 08:49:41 +0000 (Sun, 28 Sep 2025)
Log Message:
-----------
helper function to avoid warnings about snprintf %s directive output may be truncated writing up to ...

Modified Paths:
--------------
    teem/trunk/src/air/air.h
    teem/trunk/src/air/string.c

Modified: teem/trunk/src/air/air.h
===================================================================
--- teem/trunk/src/air/air.h	2025-09-28 08:25:44 UTC (rev 7508)
+++ teem/trunk/src/air/air.h	2025-09-28 08:49:41 UTC (rev 7509)
@@ -514,6 +514,7 @@
 AIR_EXPORT char *airStrdup(const char *s);
 AIR_EXPORT size_t airStrlen(const char *s);
 /* ---- BEGIN non-NrrdIO */
+AIR_EXPORT char *airStrtrunc(char *s, size_t bsize, size_t drop);
 AIR_EXPORT int airStrcmp(const char *s1, const char *s2);
 /* ---- END non-NrrdIO */
 AIR_EXPORT char *airStrtok(char *s, const char *ct, char **last);

Modified: teem/trunk/src/air/string.c
===================================================================
--- teem/trunk/src/air/string.c	2025-09-28 08:25:44 UTC (rev 7508)
+++ teem/trunk/src/air/string.c	2025-09-28 08:49:41 UTC (rev 7509)
@@ -65,6 +65,21 @@
 
 /* ---- BEGIN non-NrrdIO */
 /*
+(possibly) truncates a given string `str` stored in a buffer of size `bsize`
+to ensure that its strlen does not exceed bsize-1-drop.  But main purpose is
+to hide compile-time info about static buffer sizes to avoid warnings about:
+snprintf ...'%s' directive output may be truncated writing up to ... */
+char *
+airStrtrunc(char *str, size_t bsize, size_t drop) {
+  if (str) {
+    if (1 + drop < bsize) {
+      str[bsize - (1 + drop)] = '\0';
+    }
+  }
+  return str;
+}
+
+/*
 ******** airStrcmp
 **
 ** like strcmp, but:

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