source/blender/blenlib/BLI_string.h

@@ -114,6 +114,16 @@ size_t BLI_strcpy_rlen(char *__restrict dst, const char *__restrict src) ATTR_WA
 char *BLI_strncat(char *__restrict dst, const char *__restrict src, size_t dst_maxncpy)
     ATTR_NONNULL(1, 2);
 
+/**
+ * A version of `strchr` that returns the end of the string (point to `\0`)
+ * if the character is not found.
+ *
+ * Useful for stepping over newlines up until the last line.
+ */
+const char *BLI_strchr_or_end(const char *str,
+                              char ch) ATTR_WARN_UNUSED_RESULT ATTR_RETURNS_NONNULL
+    ATTR_NONNULL(1);
+
 /**
  * Return the range of the quoted string (excluding quotes) `str` after `prefix`.
  *

source/blender/blenlib/intern/string.c

@@ -988,6 +988,21 @@ size_t BLI_strnlen(const char *s, const size_t maxlen)
 
 /** \} */
 
+/* -------------------------------------------------------------------- */
+/** \name String Scanning
+ * \{ */
+
+const char *BLI_strchr_or_end(const char *str, const char ch)
+{
+  const char *p = str;
+  while (!ELEM(*p, ch, '\0')) {
+    p++;
+  }
+  return p;
+}
+
+/** \} */
+
 /* -------------------------------------------------------------------- */
 /** \name String Case Conversion
  * \{ */