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author | Ingo Schwarze <schwarze@openbsd.org> | 2011-01-30 16:05:37 +0000 |
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committer | Ingo Schwarze <schwarze@openbsd.org> | 2011-01-30 16:05:37 +0000 |
commit | b60f8021eeb3855308829414f20eca4897096fa7 (patch) | |
tree | fde633a186759120328c6e6ae9c0e5f2bd8fbe5a /chars.c | |
parent | 739c1eaf9cb6f5ff01a9c080620dfb1542000215 (diff) | |
download | mandoc-b60f8021eeb3855308829414f20eca4897096fa7.tar.gz mandoc-b60f8021eeb3855308829414f20eca4897096fa7.tar.zst mandoc-b60f8021eeb3855308829414f20eca4897096fa7.zip |
Implement the \N'number' (numbered character) roff escape sequence.
Don't use it in new manuals, it is inherently non-portable, but we
need it for backward-compatibility with existing manuals, for example
in Xenocara driver pages.
ok kristaps@ jmc@ and tested by Matthieu Herrb (matthieu at openbsd dot org)
Diffstat (limited to 'chars.c')
-rw-r--r-- | chars.c | 24 |
1 files changed, 23 insertions, 1 deletions
@@ -1,6 +1,7 @@ -/* $Id: chars.c,v 1.31 2011/01/02 10:10:57 kristaps Exp $ */ +/* $Id: chars.c,v 1.32 2011/01/30 16:05:37 schwarze Exp $ */ /* * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv> + * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -152,6 +153,27 @@ chars_res2cp(void *arg, const char *p, size_t sz) } +/* + * Numbered character to literal character, + * represented as a null-terminated string for additional safety. + */ +const char * +chars_num2char(const char *p, size_t sz) +{ + int i; + static char c[2]; + + if (sz > 3) + return(NULL); + i = atoi(p); + if (i < 0 || i > 255) + return(NULL); + c[0] = (char)i; + c[1] = '\0'; + return(c); +} + + /* * Special character to string array. */ |