diff options
Diffstat (limited to 'html.c')
-rw-r--r-- | html.c | 50 |
1 files changed, 49 insertions, 1 deletions
@@ -1,4 +1,4 @@ -/* $Id: html.c,v 1.67 2009/10/27 04:50:14 kristaps Exp $ */ +/* $Id: html.c,v 1.68 2009/10/28 05:08:17 kristaps Exp $ */ /* * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se> * @@ -17,6 +17,7 @@ #include <sys/types.h> #include <assert.h> +#include <ctype.h> #include <err.h> #include <stdio.h> #include <stdarg.h> @@ -648,3 +649,50 @@ bufcat_su(struct html *h, const char *p, const struct roffsu *su) buffmt(h, "%s: %d%s;", p, (int)v, u); } + +void +html_idcpy(char *dst, const char *src, int sz) +{ + + assert(sz); + dst[0] = '\0'; + html_idcat(dst, src, sz); +} + + +void +html_idcat(char *dst, const char *src, int sz) +{ + int i; + + /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */ + + for (i = 0; *dst != '\0' && i < sz - 1; dst++, i++) + /* Jump to end. */ ; + + for ( ; *src != '\0' && i < sz - 1; src++, i++) { + if (isalnum((u_char)*src)) { + *dst++ = *src; + continue; + } + + switch (*src) { + case (';'): + *dst++ = ';'; + break; + case ('-'): + *dst++ = '-'; + break; + case (':'): + *dst++ = ':'; + break; + case ('_'): + /* FALLTHROUGH */ + default: + *dst++ = '_'; + break; + } + } + + *dst = '\0'; +} |