string: Introduce compute_word_num().

[paraslash.git] / string.c

diff --git a/string.c b/string.c
index cefb45d674075cf1fcb2e42b42e5b0a929a52c16..d226af963af82c6c99e557402694b919b26c2192 100644 (file)
--- a/string.c
+++ b/string.c
@@ -711,6 +711,32 @@ out:
        return ret;
 }
 
+/**
+ * Get the number of the word the cursor is on.
+ *
+ * \param buf The zero-terminated line buffer.
+ * \param delim Characters that separate words.
+ * \param point The cursor position.
+ *
+ * \return Zero-based word number.
+ */
+int compute_word_num(const char *buf, const char *delim, int point)
+{
+       int ret, num_words;
+       const char *p;
+       char *word;
+
+       for (p = buf, num_words = 0; ; p += ret, num_words++) {
+               ret = get_next_word(p, delim, &word);
+               if (ret <= 0)
+                       break;
+               free(word);
+               if (p + ret >= buf + point)
+                       break;
+       }
+       return num_words;
+}
+
 /**
  * Free an array of words created by create_argv().
  *