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 | |
e725abcf WD |
60 | /* Match pattern "p" against string "text". */ |
61 | static int dowild(const uchar *p, const uchar *text) | |
446ee5b1 WD |
62 | { |
63 | int matched, special; | |
5f238db2 | 64 | uchar ch, prev; |
446ee5b1 | 65 | |
d5c973cc WD |
66 | #ifdef WILD_TEST_ITERATIONS |
67 | wildmatch_iteration_count++; | |
20b2e9ce WD |
68 | #endif |
69 | ||
446ee5b1 WD |
70 | for ( ; (ch = *p) != '\0'; text++, p++) { |
71 | if (*text == '\0' && ch != '*') | |
710faea9 | 72 | return FALSE; |
446ee5b1 WD |
73 | switch (ch) { |
74 | case '\\': | |
75 | /* Literal match with following character. Note that the test | |
76 | * in "default" handles the p[1] == '\0' failure case. */ | |
77 | ch = *++p; | |
78 | /* FALLTHROUGH */ | |
79 | default: | |
80 | if (*text != ch) | |
710faea9 | 81 | return FALSE; |
446ee5b1 WD |
82 | continue; |
83 | case '?': | |
84 | /* Match anything but '/'. */ | |
85 | if (*text == '/') | |
710faea9 | 86 | return FALSE; |
446ee5b1 WD |
87 | continue; |
88 | case '*': | |
89 | if (*++p == '*') { | |
90 | while (*++p == '*') {} | |
710faea9 | 91 | special = TRUE; |
e725abcf | 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++) { | |
e725abcf | 100 | if ((matched = dowild(p, text)) != FALSE) { |
20b2e9ce WD |
101 | if (!special || matched != ABORT_TO_STARSTAR) |
102 | return matched; | |
e725abcf | 103 | } else if (!special && *text == '/') |
20b2e9ce | 104 | return ABORT_TO_STARSTAR; |
446ee5b1 | 105 | } |
20b2e9ce | 106 | return ABORT_ALL; |
446ee5b1 | 107 | case '[': |
c9a59880 | 108 | ch = *++p; |
e11c4251 WD |
109 | #ifdef NEGATE_CLASS2 |
110 | if (ch == NEGATE_CLASS2) | |
111 | ch = NEGATE_CLASS; | |
112 | #endif | |
c9a59880 WD |
113 | /* Assign literal TRUE/FALSE because of "matched" comparison. */ |
114 | special = ch == NEGATE_CLASS? TRUE : FALSE; | |
446ee5b1 WD |
115 | if (special) { |
116 | /* Inverted character class. */ | |
c9a59880 | 117 | ch = *++p; |
446ee5b1 WD |
118 | } |
119 | prev = 0; | |
710faea9 | 120 | matched = FALSE; |
c9a59880 | 121 | do { |
446ee5b1 | 122 | if (!ch) |
5bb92000 | 123 | return ABORT_ALL; |
e11c4251 WD |
124 | if (ch == '\\') { |
125 | ch = *++p; | |
126 | if (!ch) | |
5bb92000 | 127 | return ABORT_ALL; |
e11c4251 WD |
128 | if (*text == ch) |
129 | matched = TRUE; | |
e725abcf | 130 | } else if (ch == '-' && prev && p[1] && p[1] != ']') { |
e11c4251 WD |
131 | ch = *++p; |
132 | if (ch == '\\') { | |
133 | ch = *++p; | |
134 | if (!ch) | |
5bb92000 | 135 | return ABORT_ALL; |
e11c4251 WD |
136 | } |
137 | if (*text <= ch && *text >= prev) | |
138 | matched = TRUE; | |
139 | ch = 0; /* This makes "prev" get set to 0. */ | |
e725abcf | 140 | } else if (ch == '[' && p[1] == ':') { |
5f238db2 | 141 | const uchar *s; |
e11c4251 | 142 | int i; |
5f238db2 | 143 | for (s = p += 2; (ch = *p) && ch != ']'; p++) {} |
e11c4251 | 144 | if (!ch) |
5bb92000 | 145 | return ABORT_ALL; |
fc96552d WD |
146 | i = p - s - 1; |
147 | if (i < 0 || p[-1] != ':') { | |
148 | /* Didn't find ":]", so treat like a normal set. */ | |
149 | p = s - 2; | |
150 | ch = '['; | |
151 | if (*text == ch) | |
152 | matched = TRUE; | |
153 | continue; | |
154 | } | |
5bb92000 WD |
155 | if (CC_EQ(s,i, "alnum")) { |
156 | if (ISALNUM(*text)) | |
157 | matched = TRUE; | |
e725abcf | 158 | } else if (CC_EQ(s,i, "alpha")) { |
5bb92000 WD |
159 | if (ISALPHA(*text)) |
160 | matched = TRUE; | |
e725abcf | 161 | } else if (CC_EQ(s,i, "blank")) { |
5bb92000 WD |
162 | if (ISBLANK(*text)) |
163 | matched = TRUE; | |
e725abcf | 164 | } else if (CC_EQ(s,i, "cntrl")) { |
5bb92000 WD |
165 | if (ISCNTRL(*text)) |
166 | matched = TRUE; | |
e725abcf | 167 | } else if (CC_EQ(s,i, "digit")) { |
5bb92000 WD |
168 | if (ISDIGIT(*text)) |
169 | matched = TRUE; | |
e725abcf | 170 | } else if (CC_EQ(s,i, "graph")) { |
5bb92000 WD |
171 | if (ISGRAPH(*text)) |
172 | matched = TRUE; | |
e725abcf | 173 | } else if (CC_EQ(s,i, "lower")) { |
5bb92000 WD |
174 | if (ISLOWER(*text)) |
175 | matched = TRUE; | |
e725abcf | 176 | } else if (CC_EQ(s,i, "print")) { |
5bb92000 WD |
177 | if (ISPRINT(*text)) |
178 | matched = TRUE; | |
e725abcf | 179 | } else if (CC_EQ(s,i, "punct")) { |
5bb92000 WD |
180 | if (ISPUNCT(*text)) |
181 | matched = TRUE; | |
e725abcf | 182 | } else if (CC_EQ(s,i, "space")) { |
5bb92000 WD |
183 | if (ISSPACE(*text)) |
184 | matched = TRUE; | |
e725abcf | 185 | } else if (CC_EQ(s,i, "upper")) { |
5bb92000 WD |
186 | if (ISUPPER(*text)) |
187 | matched = TRUE; | |
e725abcf | 188 | } else if (CC_EQ(s,i, "xdigit")) { |
5bb92000 WD |
189 | if (ISXDIGIT(*text)) |
190 | matched = TRUE; | |
e725abcf | 191 | } else /* malformed [:class:] string */ |
5bb92000 | 192 | return ABORT_ALL; |
7a1f46b6 | 193 | ch = 0; /* This makes "prev" get set to 0. */ |
e725abcf | 194 | } else if (*text == ch) |
710faea9 | 195 | matched = TRUE; |
c9a59880 | 196 | } while (prev = ch, (ch = *++p) != ']'); |
d811b689 | 197 | if (matched == special || *text == '/') |
710faea9 | 198 | return FALSE; |
446ee5b1 WD |
199 | continue; |
200 | } | |
201 | } | |
202 | ||
203 | return *text == '\0'; | |
204 | } | |
710faea9 | 205 | |
e725abcf WD |
206 | /* Match the "pattern" against the "text" string. */ |
207 | int wildmatch(const char *pattern, const char *text) | |
710faea9 | 208 | { |
d5c973cc WD |
209 | #ifdef WILD_TEST_ITERATIONS |
210 | wildmatch_iteration_count = 0; | |
20b2e9ce | 211 | #endif |
e725abcf | 212 | return dowild((const uchar*)pattern, (const uchar*)text) == TRUE; |
710faea9 | 213 | } |