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-rw-r--r--chars.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/chars.c b/chars.c
index 37bb9a97..2b5f035b 100644
--- a/chars.c
+++ b/chars.c
@@ -138,7 +138,7 @@ mchars_res2cp(struct mchars *arg, const char *p, size_t sz)
}
/*
- * Numbered character to literal character.
+ * Numbered character string to ASCII codepoint.
* This can only be a printable character (i.e., alnum, punct, space) so
* prevent the character from ruining our state (backspace, newline, and
* so on).
@@ -151,10 +151,24 @@ mchars_num2char(const char *p, size_t sz)
if ((i = mandoc_strntou(p, sz, 10)) < 0)
return('\0');
-
return(isprint(i) ? i : '\0');
}
+/*
+ * Hex character string to Unicode codepoint.
+ * If the character is illegal, returns '\0'.
+ */
+int
+mchars_num2uc(const char *p, size_t sz)
+{
+ int i;
+
+ if ((i = mandoc_strntou(p, sz, 16)) < 0)
+ return('\0');
+ /* FIXME: make sure we're not in a bogus range. */
+ return(i > 0x80 && i <= 0x10FFFF ? i : '\0');
+}
+
/*
* Special character to string array.
*/