Commit | Line | Data |
---|---|---|
446ee5b1 WD |
1 | /* |
2 | ** Do shell-style pattern matching for ?, \, [], and * characters. | |
3 | ** It is 8bit clean. | |
4 | ** | |
5 | ** Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986. | |
6 | ** Rich $alz is now <rsalz@bbn.com>. | |
7 | ** | |
7a1f46b6 WD |
8 | ** Modified by Wayne Davison to special-case '/' matching, to make '**' |
9 | ** work differently than '*', and to fix the character-class code. | |
446ee5b1 WD |
10 | */ |
11 | ||
12 | #include "rsync.h" | |
13 | ||
14 | /* What character marks an inverted character class? */ | |
e11c4251 WD |
15 | #define NEGATE_CLASS '!' |
16 | #define NEGATE_CLASS2 '^' | |
446ee5b1 | 17 | |
710faea9 WD |
18 | #define FALSE 0 |
19 | #define TRUE 1 | |
20b2e9ce WD |
20 | #define ABORT_ALL -1 |
21 | #define ABORT_TO_STARSTAR -2 | |
22 | ||
5bb92000 WD |
23 | #define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \ |
24 | && *(class) == *(litmatch) \ | |
136c5c5e | 25 | && strncmp((char*)class, litmatch, len) == 0) |
e11c4251 | 26 | |
f2ac84c3 WD |
27 | #if defined STDC_HEADERS || !defined isascii |
28 | # define ISASCII(c) 1 | |
29 | #else | |
30 | # define ISASCII(c) isascii(c) | |
31 | #endif | |
32 | ||
33 | #ifdef isblank | |
34 | # define ISBLANK(c) (ISASCII(c) && isblank(c)) | |
35 | #else | |
36 | # define ISBLANK(c) ((c) == ' ' || (c) == '\t') | |
37 | #endif | |
38 | ||
39 | #ifdef isgraph | |
40 | # define ISGRAPH(c) (ISASCII(c) && isgraph(c)) | |
41 | #else | |
42 | # define ISGRAPH(c) (ISASCII(c) && isprint(c) && !isspace(c)) | |
43 | #endif | |
44 | ||
45 | #define ISPRINT(c) (ISASCII(c) && isprint(c)) | |
46 | #define ISDIGIT(c) (ISASCII(c) && isdigit(c)) | |
47 | #define ISALNUM(c) (ISASCII(c) && isalnum(c)) | |
48 | #define ISALPHA(c) (ISASCII(c) && isalpha(c)) | |
49 | #define ISCNTRL(c) (ISASCII(c) && iscntrl(c)) | |
50 | #define ISLOWER(c) (ISASCII(c) && islower(c)) | |
51 | #define ISPUNCT(c) (ISASCII(c) && ispunct(c)) | |
52 | #define ISSPACE(c) (ISASCII(c) && isspace(c)) | |
53 | #define ISUPPER(c) (ISASCII(c) && isupper(c)) | |
54 | #define ISXDIGIT(c) (ISASCII(c) && isxdigit(c)) | |
55 | ||
d5c973cc WD |
56 | #ifdef WILD_TEST_ITERATIONS |
57 | int wildmatch_iteration_count; | |
20b2e9ce | 58 | #endif |
446ee5b1 | 59 | |
5f238db2 | 60 | static int domatch(const uchar *p, const uchar *text) |
446ee5b1 WD |
61 | { |
62 | int matched, special; | |
5f238db2 | 63 | uchar ch, prev; |
446ee5b1 | 64 | |
d5c973cc WD |
65 | #ifdef WILD_TEST_ITERATIONS |
66 | wildmatch_iteration_count++; | |
20b2e9ce WD |
67 | #endif |
68 | ||
446ee5b1 WD |
69 | for ( ; (ch = *p) != '\0'; text++, p++) { |
70 | if (*text == '\0' && ch != '*') | |
710faea9 | 71 | return FALSE; |
446ee5b1 WD |
72 | switch (ch) { |
73 | case '\\': | |
74 | /* Literal match with following character. Note that the test | |
75 | * in "default" handles the p[1] == '\0' failure case. */ | |
76 | ch = *++p; | |
77 | /* FALLTHROUGH */ | |
78 | default: | |
79 | if (*text != ch) | |
710faea9 | 80 | return FALSE; |
446ee5b1 WD |
81 | continue; |
82 | case '?': | |
83 | /* Match anything but '/'. */ | |
84 | if (*text == '/') | |
710faea9 | 85 | return FALSE; |
446ee5b1 WD |
86 | continue; |
87 | case '*': | |
88 | if (*++p == '*') { | |
89 | while (*++p == '*') {} | |
710faea9 | 90 | special = TRUE; |
446ee5b1 WD |
91 | } |
92 | else | |
710faea9 | 93 | special = FALSE; |
446ee5b1 | 94 | if (*p == '\0') { |
710faea9 WD |
95 | /* Trailing "**" matches everything. Trailing "*" matches |
96 | * only if there are no more slash characters. */ | |
136c5c5e | 97 | return special? TRUE : strchr((char*)text, '/') == NULL; |
446ee5b1 WD |
98 | } |
99 | for ( ; *text; text++) { | |
20b2e9ce WD |
100 | if ((matched = domatch(p, text)) != FALSE) { |
101 | if (!special || matched != ABORT_TO_STARSTAR) | |
102 | return matched; | |
103 | } | |
104 | else if (!special && *text == '/') | |
105 | return ABORT_TO_STARSTAR; | |
446ee5b1 | 106 | } |
20b2e9ce | 107 | return ABORT_ALL; |
446ee5b1 | 108 | case '[': |
c9a59880 | 109 | ch = *++p; |
e11c4251 WD |
110 | #ifdef NEGATE_CLASS2 |
111 | if (ch == NEGATE_CLASS2) | |
112 | ch = NEGATE_CLASS; | |
113 | #endif | |
c9a59880 WD |
114 | /* Assign literal TRUE/FALSE because of "matched" comparison. */ |
115 | special = ch == NEGATE_CLASS? TRUE : FALSE; | |
446ee5b1 WD |
116 | if (special) { |
117 | /* Inverted character class. */ | |
c9a59880 | 118 | ch = *++p; |
446ee5b1 WD |
119 | } |
120 | prev = 0; | |
710faea9 | 121 | matched = FALSE; |
c9a59880 | 122 | do { |
446ee5b1 | 123 | if (!ch) |
5bb92000 | 124 | return ABORT_ALL; |
e11c4251 WD |
125 | if (ch == '\\') { |
126 | ch = *++p; | |
127 | if (!ch) | |
5bb92000 | 128 | return ABORT_ALL; |
e11c4251 WD |
129 | if (*text == ch) |
130 | matched = TRUE; | |
131 | } | |
132 | else if (ch == '-' && prev && p[1] && p[1] != ']') { | |
133 | ch = *++p; | |
134 | if (ch == '\\') { | |
135 | ch = *++p; | |
136 | if (!ch) | |
5bb92000 | 137 | return ABORT_ALL; |
e11c4251 WD |
138 | } |
139 | if (*text <= ch && *text >= prev) | |
140 | matched = TRUE; | |
141 | ch = 0; /* This makes "prev" get set to 0. */ | |
142 | } | |
143 | else if (ch == '[' && p[1] == ':') { | |
5f238db2 | 144 | const uchar *s; |
e11c4251 | 145 | int i; |
5f238db2 | 146 | for (s = p += 2; (ch = *p) && ch != ']'; p++) {} |
e11c4251 | 147 | if (!ch) |
5bb92000 | 148 | return ABORT_ALL; |
fc96552d WD |
149 | i = p - s - 1; |
150 | if (i < 0 || p[-1] != ':') { | |
151 | /* Didn't find ":]", so treat like a normal set. */ | |
152 | p = s - 2; | |
153 | ch = '['; | |
154 | if (*text == ch) | |
155 | matched = TRUE; | |
156 | continue; | |
157 | } | |
5bb92000 WD |
158 | if (CC_EQ(s,i, "alnum")) { |
159 | if (ISALNUM(*text)) | |
160 | matched = TRUE; | |
161 | } | |
162 | else if (CC_EQ(s,i, "alpha")) { | |
163 | if (ISALPHA(*text)) | |
164 | matched = TRUE; | |
165 | } | |
166 | else if (CC_EQ(s,i, "blank")) { | |
167 | if (ISBLANK(*text)) | |
168 | matched = TRUE; | |
169 | } | |
170 | else if (CC_EQ(s,i, "cntrl")) { | |
171 | if (ISCNTRL(*text)) | |
172 | matched = TRUE; | |
173 | } | |
174 | else if (CC_EQ(s,i, "digit")) { | |
175 | if (ISDIGIT(*text)) | |
176 | matched = TRUE; | |
177 | } | |
178 | else if (CC_EQ(s,i, "graph")) { | |
179 | if (ISGRAPH(*text)) | |
180 | matched = TRUE; | |
181 | } | |
182 | else if (CC_EQ(s,i, "lower")) { | |
183 | if (ISLOWER(*text)) | |
184 | matched = TRUE; | |
185 | } | |
186 | else if (CC_EQ(s,i, "print")) { | |
187 | if (ISPRINT(*text)) | |
188 | matched = TRUE; | |
189 | } | |
190 | else if (CC_EQ(s,i, "punct")) { | |
191 | if (ISPUNCT(*text)) | |
192 | matched = TRUE; | |
193 | } | |
194 | else if (CC_EQ(s,i, "space")) { | |
195 | if (ISSPACE(*text)) | |
196 | matched = TRUE; | |
197 | } | |
198 | else if (CC_EQ(s,i, "upper")) { | |
199 | if (ISUPPER(*text)) | |
200 | matched = TRUE; | |
201 | } | |
202 | else if (CC_EQ(s,i, "xdigit")) { | |
203 | if (ISXDIGIT(*text)) | |
204 | matched = TRUE; | |
205 | } | |
206 | else /* malformed [:class:] string */ | |
207 | return ABORT_ALL; | |
7a1f46b6 | 208 | ch = 0; /* This makes "prev" get set to 0. */ |
446ee5b1 WD |
209 | } |
210 | else if (*text == ch) | |
710faea9 | 211 | matched = TRUE; |
c9a59880 | 212 | } while (prev = ch, (ch = *++p) != ']'); |
d811b689 | 213 | if (matched == special || *text == '/') |
710faea9 | 214 | return FALSE; |
446ee5b1 WD |
215 | continue; |
216 | } | |
217 | } | |
218 | ||
219 | return *text == '\0'; | |
220 | } | |
710faea9 | 221 | |
e11c4251 WD |
222 | /* Find the pattern (p) in the text string (t). */ |
223 | int wildmatch(const char *p, const char *t) | |
710faea9 | 224 | { |
d5c973cc WD |
225 | #ifdef WILD_TEST_ITERATIONS |
226 | wildmatch_iteration_count = 0; | |
20b2e9ce | 227 | #endif |
5f238db2 | 228 | return domatch((const uchar*)p, (const uchar*)t) == TRUE; |
710faea9 | 229 | } |