fdupes  2.1.2
About: FDUPES finds duplicate files in a given set of directories.
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wcs.c
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1 /* Copyright (c) 2018 Adrian Lopez
2 
3  This software is provided 'as-is', without any express or implied
4  warranty. In no event will the authors be held liable for any damages
5  arising from the use of this software.
6 
7  Permission is granted to anyone to use this software for any purpose,
8  including commercial applications, and to alter it and redistribute it
9  freely, subject to the following restrictions:
10 
11  1. The origin of this software must not be misrepresented; you must not
12  claim that you wrote the original software. If you use this software
13  in a product, an acknowledgment in the product documentation would be
14  appreciated but is not required.
15  2. Altered source versions must be plainly marked as such, and must not be
16  misrepresented as being the original software.
17  3. This notice may not be removed or altered from any source distribution. */
18 
19 #include <stdlib.h>
20 #include "wcs.h"
22 
23 /* compare wide and multibyte strings */
24 int wcsmbcscmp(wchar_t *s1, char *s2)
25 {
26  wchar_t *s2w;
27  size_t size;
28  int result;
29 
30  size = mbstowcs_escape_invalid(0, s2, 0) + 1;
31 
32  s2w = (wchar_t*) malloc(size * sizeof(wchar_t));
33  if (s2w == 0)
34  return -1;
35 
36  mbstowcs_escape_invalid(s2w, s2, size);
37 
38  result = wcscmp(s1, s2w);
39 
40  free(s2w);
41 
42  return result;
43 }
44 
45 /* wide character needle is contained in multibyte haystack */
46 int wcsinmbcs(char *haystack, wchar_t *needle)
47 {
48  wchar_t *haystackw;
49  size_t size;
50  int result;
51 
52  size = mbstowcs_escape_invalid(0, haystack, 0) + 1;
53 
54  haystackw = (wchar_t*) malloc(size * sizeof(wchar_t));
55  if (haystackw == 0)
56  return -1;
57 
58  mbstowcs_escape_invalid(haystackw, haystack, size);
59 
60  if (wcsstr(haystackw, needle) == 0)
61  result = 0;
62  else
63  result = 1;
64 
65  free(haystackw);
66 
67  return result;
68 }
69 
70 /* wide character needle at beginning of multibyte haystack */
71 int wcsbeginmbcs(char *haystack, wchar_t *needle)
72 {
73  wchar_t *haystackw;
74  size_t size;
75  int result;
76 
77  size = mbstowcs_escape_invalid(0, haystack, 0);
78 
79  haystackw = (wchar_t*) malloc(size * sizeof(wchar_t));
80  if (haystackw == 0)
81  return -1;
82 
83  mbstowcs_escape_invalid(haystackw, haystack, size);
84 
85  if (wcsncmp(haystackw, needle, wcslen(needle)) == 0)
86  result = 1;
87  else
88  result = 0;
89 
90  free(haystackw);
91 
92  return result;
93 }
94 
95 /* wide character needle at end of multibyte haystack */
96 int wcsendsmbcs(char *haystack, wchar_t *needle)
97 {
98  wchar_t *haystackw;
99  size_t size;
100  int result;
101 
102  size = mbstowcs_escape_invalid(0, haystack, 0) + 1;
103 
104  haystackw = (wchar_t*) malloc(size * sizeof(wchar_t));
105  if (haystackw == 0)
106  return -1;
107 
108  mbstowcs_escape_invalid(haystackw, haystack, size);
109 
110  if (wcsrstr(haystackw, needle) != 0 && wcscmp(wcsrstr(haystackw, needle), needle) == 0)
111  result = 1;
112  else
113  result = 0;
114 
115  free(haystackw);
116 
117  return result;
118 }
119 
120 /* wide character reverse string search */
121 wchar_t *wcsrstr(wchar_t *haystack, wchar_t *needle)
122 {
123  wchar_t *found = 0;
124  wchar_t *next = 0;
125 
126  found = wcsstr(haystack, needle);
127  if (found)
128  {
129  do {
130  next = wcsstr(found + 1, needle);
131  if (next != 0)
132  found = next;
133  } while (next);
134 
135  return found;
136  }
137 
138  return 0;
139 }
mbstowcs_escape_invalid
size_t mbstowcs_escape_invalid(wchar_t *dest, const char *src, size_t n)
Definition: mbstowcs_escape_invalid.c:56
wcsinmbcs
int wcsinmbcs(char *haystack, wchar_t *needle)
Definition: wcs.c:46
wcsrstr
wchar_t * wcsrstr(wchar_t *haystack, wchar_t *needle)
Definition: wcs.c:121
wcsbeginmbcs
int wcsbeginmbcs(char *haystack, wchar_t *needle)
Definition: wcs.c:71
wcsmbcscmp
int wcsmbcscmp(wchar_t *s1, char *s2)
Definition: wcs.c:24
mbstowcs_escape_invalid.h
wcs.h
wcsendsmbcs
int wcsendsmbcs(char *haystack, wchar_t *needle)
Definition: wcs.c:96