1 /*
2 tre_regerror.c - POSIX tre_regerror() implementation for TRE.
3
4 This software is released under a BSD-style license.
5 See the file LICENSE for details and copyright.
6
7 */
8
9 #ifdef HAVE_CONFIG_H
10 #include <config.h>
11 #endif /* HAVE_CONFIG_H */
12
13 #include <string.h>
14 #ifdef HAVE_WCHAR_H
15 #include <wchar.h>
16 #endif /* HAVE_WCHAR_H */
17 #ifdef HAVE_WCTYPE_H
18 #include <wctype.h>
19 #endif /* HAVE_WCTYPE_H */
20
21 #include "tre-internal.h"
22 #include "tre.h"
23
24 #ifdef HAVE_GETTEXT
25 #include <libintl.h>
26 #else
27 #define dgettext(p, s) s
28 #define gettext(s) s
29 #endif
30
31 #define _(String) dgettext(PACKAGE, String)
32 #define gettext_noop(String) String
33
34 /* Error message strings for error codes listed in `tre.h'. This list
35 needs to be in sync with the codes listed there, naturally. */
36 static const char *tre_error_messages[] =
37 { gettext_noop("No error"), /* REG_OK */
38 gettext_noop("No match"), /* REG_NOMATCH */
39 gettext_noop("Invalid regexp"), /* REG_BADPAT */
40 gettext_noop("Unknown collating element"), /* REG_ECOLLATE */
41 gettext_noop("Unknown character class name"), /* REG_ECTYPE */
42 gettext_noop("Trailing backslash"), /* REG_EESCAPE */
43 gettext_noop("Invalid back reference"), /* REG_ESUBREG */
44 gettext_noop("Missing ']'"), /* REG_EBRACK */
45 gettext_noop("Missing ')'"), /* REG_EPAREN */
46 gettext_noop("Missing '}'"), /* REG_EBRACE */
47 gettext_noop("Invalid contents of {}"), /* REG_BADBR */
48 gettext_noop("Invalid character range"), /* REG_ERANGE */
49 gettext_noop("Out of memory"), /* REG_ESPACE */
50 gettext_noop("Invalid use of repetition operators") /* REG_BADRPT */
51 };
52
53 size_t
tre_regerror(int errcode,const regex_t * preg,char * errbuf,size_t errbuf_size)54 tre_regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
55 {
56 const char *err;
57 size_t err_len;
58
59 /*LINTED*/(void)&preg;
60 if (errcode >= 0
61 && errcode < (int)(sizeof(tre_error_messages)
62 / sizeof(*tre_error_messages)))
63 err = gettext(tre_error_messages[errcode]);
64 else
65 err = gettext("Unknown error");
66
67 err_len = strlen(err) + 1;
68 if (errbuf_size > 0 && errbuf != NULL)
69 {
70 if (err_len > errbuf_size)
71 {
72 strncpy(errbuf, err, errbuf_size - 1);
73 errbuf[errbuf_size - 1] = '\0';
74 }
75 else
76 {
77 strcpy(errbuf, err);
78 }
79 }
80 return err_len;
81 }
82
83 /* EOF */
84