pspp-sheet-view: Make Shift+Tab select only one cell when switching rows.

[pspp] / src / libpspp / str.c

diff --git a/src/libpspp/str.c b/src/libpspp/str.c
index c630cf9ada761aa89b260197ca0718b1e9ff4344..44e4a1da28ee7183a98eb1e819a755bc55759c0f 100644 (file)
--- a/src/libpspp/str.c
+++ b/src/libpspp/str.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 1997-9, 2000, 2006, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1997-9, 2000, 2006, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -270,17 +270,22 @@ str_format_26adic (unsigned long int number, char buffer[], size_t size)
   while (number-- > 0)
     {
       if (length >= size)
-        return false;
+        goto overflow;
       buffer[length++] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"[number % 26];
       number /= 26;
     }
 
   if (length >= size)
-    return false;
+    goto overflow;
   buffer[length] = '\0';
 
   buf_reverse (buffer, length);
   return true;
+
+overflow:
+  if (length > 0)
+    buffer[0] = '\0';
+  return false;
 }
 
 /* Sets the SIZE bytes starting at BLOCK to C,
@@ -486,11 +491,15 @@ bool
 ss_tokenize (struct substring ss, struct substring delimiters,
              size_t *save_idx, struct substring *token)
 {
+  bool found_token;
+
   ss_advance (&ss, *save_idx);
   *save_idx += ss_ltrim (&ss, delimiters);
   ss_get_bytes (&ss, ss_cspan (ss, delimiters), token);
-  *save_idx += ss_length (*token) + 1;
-  return ss_length (*token) > 0;
+
+  found_token = ss_length (*token) > 0;
+  *save_idx += ss_length (*token) + found_token;
+  return found_token;
 }
 
 /* Removes the first CNT bytes from SS. */
@@ -1539,6 +1548,13 @@ ds_put_byte_multiple (struct string *st, int ch, size_t cnt)
   memset (ds_put_uninit (st, cnt), ch, cnt);
 }
 
+/* Appends Unicode code point UC to ST in UTF-8 encoding. */
+void
+ds_put_unichar (struct string *st, ucs4_t uc)
+{
+  ds_extend (st, ds_length (st) + 6);
+  st->ss.length += u8_uctomb (CHAR_CAST (uint8_t *, ds_end (st)), uc, 6);
+}
 
 /* If relocation has been enabled, replace ST,
    with its relocated version */