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author | Kristaps Dzonsons <kristaps@bsd.lv> | 2009-07-04 09:01:55 +0000 |
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committer | Kristaps Dzonsons <kristaps@bsd.lv> | 2009-07-04 09:01:55 +0000 |
commit | 9e21548672490d99d4a59ab449c80b3721689818 (patch) | |
tree | 8680f364835e7cc1a867ed96dbd5a3eaf8669759 /mandoc.c | |
parent | f2ddfbfe82c8d980d204eb501343ff94da2d568c (diff) | |
download | mandoc-9e21548672490d99d4a59ab449c80b3721689818.tar.gz mandoc-9e21548672490d99d4a59ab449c80b3721689818.tar.zst mandoc-9e21548672490d99d4a59ab449c80b3721689818.zip |
Moved escape validation into libmandoc.h/mandoc.c (common between libman/libmdoc1).
libman supports MAN_IGN_ESCAPE (like MDOC_IGN_ESCAPE).
All popular escapes now handled consistently.
Diffstat (limited to 'mandoc.c')
-rw-r--r-- | mandoc.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/mandoc.c b/mandoc.c new file mode 100644 index 00000000..9ca3c570 --- /dev/null +++ b/mandoc.c @@ -0,0 +1,101 @@ +/* $Id: mandoc.c,v 1.1 2009/07/04 09:01:55 kristaps Exp $ */ +/* + * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <assert.h> +#include <ctype.h> +#include <stdlib.h> + +#include "libmandoc.h" + +int +mandoc_special(const char *p) +{ + int c; + + if ('\\' != *p++) + return(0); + + switch (*p) { + case ('\\'): + /* FALLTHROUGH */ + case ('\''): + /* FALLTHROUGH */ + case ('`'): + /* FALLTHROUGH */ + case ('q'): + /* FALLTHROUGH */ + case ('-'): + /* FALLTHROUGH */ + case ('~'): + /* FALLTHROUGH */ + case ('^'): + /* FALLTHROUGH */ + case ('%'): + /* FALLTHROUGH */ + case ('0'): + /* FALLTHROUGH */ + case (' '): + /* FALLTHROUGH */ + case ('|'): + /* FALLTHROUGH */ + case ('&'): + /* FALLTHROUGH */ + case ('.'): + /* FALLTHROUGH */ + case (':'): + /* FALLTHROUGH */ + case ('e'): + return(2); + case ('f'): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + return(3); + case ('*'): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + switch (*p) { + case ('('): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + return(4); + case ('['): + for (c = 3, p++; *p && ']' != *p; p++, c++) + if ( ! isgraph((u_char)*p)) + break; + return(*p == ']' ? c : 0); + default: + break; + } + return(3); + case ('('): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + return(4); + case ('['): + break; + default: + return(0); + } + + for (c = 3, p++; *p && ']' != *p; p++, c++) + if ( ! isgraph((u_char)*p)) + break; + + return(*p == ']' ? c : 0); +} + |