1 files changed, 110 insertions, 0 deletions
diff --git a/pkg/utilities/nttools/stxtools/sbuf.x b/pkg/utilities/nttools/stxtools/sbuf.x
new file mode 100644
index 00000000..a5bead52
--- /dev/null
+++ b/pkg/utilities/nttools/stxtools/sbuf.x
@@ -0,0 +1,110 @@
+include "sbuf.h"
+
+#---------------------------------------------------------------------------
+.help sbuf Mar93 source
+.ih
+NAME
+.nf
+sb_open   -- Open an sbuf.
+sb_cat    -- Add a string to the end of sbuf.
+sb_close  -- Close an sbuf.
+sb_string -- Get the string to an sbuf.
+.fi
+.ih
+USAGE
+.nf
+sb = sb_open()
+call sb_cat (sb, str)
+call sb_close (sb)
+str_ptr = sb_string (sb)
+.fi
+.ih
+ARGUMENTS
+.ls sb (pointer :input/output)
+The string buffer descriptor.
+.le
+.ls str (char[ARB] :input)
+The string to append to the string buffer.
+.le
+.ls str_ptr (pointer :output)
+A pointer to a string array containing the contents of the string buffer.
+When done, the user is required to deallocate this memory using the call
+"call mfree (str_ptr, TY_CHAR)".
+.le
+.ih
+DISCUSSION
+This interface allows one to handle arbitrarily long strings without
+having to worry about the memory management.
+
+There may be other utility routines to add; feel free to do so.
+.endhelp
+#---------------------------------------------------------------------------
+pointer procedure sb_open
+
+pointer sb                      # The sbuf pointer
+
+errchk  malloc
+
+begin
+        call malloc (sb, SB_SZ_SB, TY_STRUCT)
+        call malloc (SB_PTR(sb), SZ_LINE, TY_CHAR)
+        SB_LEN(sb) = 0
+        SB_MAXLEN(sb) = SZ_LINE
+        
+        return (sb)
+end
+#---------------------------------------------------------------------------
+# End of sb_open
+#---------------------------------------------------------------------------
+procedure sb_close (sb)
+
+pointer sb                      # IO: The sbuf descriptor, NULL on exit.
+
+errchk  mfree
+
+begin
+	if (sb != NULL) {
+	    call mfree (SB_PTR(sb), TY_CHAR)
+	    call mfree (sb, TY_STRUCT)
+	}
+end
+#---------------------------------------------------------------------------
+# End of sb_close
+#---------------------------------------------------------------------------
+pointer procedure sb_string (sb)
+
+pointer sb                      # I:  The sbuf descriptor.
+
+pointer str                     # New string pointer.
+
+begin
+        call malloc (str, SB_LEN(sb), TY_CHAR)
+        call strcpy (SB_BUF(sb,0), Memc[str], SB_LEN(sb))
+
+        return (str)
+end
+#---------------------------------------------------------------------------
+# End of sb_string
+#---------------------------------------------------------------------------
+procedure sb_cat (sb, str)
+
+pointer sb                      # I: The sbuf descriptor.
+char    str[ARB]                # I:  The string to concatenate.
+
+int     i, strlen()             # Length of input string.
+
+errchk  realloc
+
+begin
+        i = strlen (str)
+        if (i + SB_LEN(sb) >= SB_MAXLEN(sb)) {
+            SB_MAXLEN(sb) = SB_MAXLEN(sb) + i + SZ_LINE
+            call realloc (SB_PTR(sb), SB_MAXLEN(sb), TY_CHAR)
+        }
+
+        call strcpy (str, SB_BUF(sb,SB_LEN(sb)), i)
+        SB_LEN(sb) = SB_LEN(sb) + i
+end
+#---------------------------------------------------------------------------
+# End of sb_cat
+#---------------------------------------------------------------------------