2 ** Do shell-style pattern matching for ?, \, [], and * characters.
5 ** Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
6 ** Rich $alz is now <rsalz@bbn.com>.
8 ** Modified by Wayne Davison to special-case '/' matching, to make '**'
9 ** work differently than '*', and to fix the character-class code.
14 /* What character marks an inverted character class? */
15 #define NEGATE_CLASS '!'
16 #define NEGATE_CLASS2 '^'
21 #define ABORT_TO_STARSTAR -2
23 #define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
24 && *(class) == *(litmatch) \
25 && strncmp((char*)class, litmatch, len) == 0)
27 #if defined STDC_HEADERS || !defined isascii
30 # define ISASCII(c) isascii(c)
34 # define ISBLANK(c) (ISASCII(c) && isblank(c))
36 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
40 # define ISGRAPH(c) (ISASCII(c) && isgraph(c))
42 # define ISGRAPH(c) (ISASCII(c) && isprint(c) && !isspace(c))
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))
56 #ifdef WILD_TEST_ITERATIONS
57 int wildmatch_iteration_count;
60 static int force_lower_case = 0;
62 /* Match pattern "p" against string "text". */
63 static int dowild(const uchar *p, const uchar *text)
67 #ifdef WILD_TEST_ITERATIONS
68 wildmatch_iteration_count++;
71 for ( ; (p_ch = *p) != '\0'; text++, p++) {
74 if ((t_ch = *text) == '\0' && p_ch != '*')
76 if (force_lower_case && ISUPPER(t_ch))
80 /* Literal match with following character. Note that the test
81 * in "default" handles the p[1] == '\0' failure case. */
89 /* Match anything but '/'. */
95 while (*++p == '*') {}
100 /* Trailing "**" matches everything. Trailing "*" matches
101 * only if there are no more slash characters. */
102 return special? TRUE : strchr((char*)text, '/') == NULL;
104 for ( ; t_ch; (t_ch = *++text)) {
105 if ((matched = dowild(p, text)) != FALSE) {
106 if (!special || matched != ABORT_TO_STARSTAR)
108 } else if (!special && t_ch == '/')
109 return ABORT_TO_STARSTAR;
115 if (p_ch == NEGATE_CLASS2)
118 /* Assign literal TRUE/FALSE because of "matched" comparison. */
119 special = p_ch == NEGATE_CLASS? TRUE : FALSE;
121 /* Inverted character class. */
135 } else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
142 if (t_ch <= p_ch && t_ch >= prev_ch)
144 p_ch = 0; /* This makes "prev_ch" get set to 0. */
145 } else if (p_ch == '[' && p[1] == ':') {
148 for (s = p += 2; (p_ch = *p) && p_ch != ']'; p++) {}
152 if (i < 0 || p[-1] != ':') {
153 /* Didn't find ":]", so treat like a normal set. */
160 if (CC_EQ(s,i, "alnum")) {
163 } else if (CC_EQ(s,i, "alpha")) {
166 } else if (CC_EQ(s,i, "blank")) {
169 } else if (CC_EQ(s,i, "cntrl")) {
172 } else if (CC_EQ(s,i, "digit")) {
175 } else if (CC_EQ(s,i, "graph")) {
178 } else if (CC_EQ(s,i, "lower")) {
181 } else if (CC_EQ(s,i, "print")) {
184 } else if (CC_EQ(s,i, "punct")) {
187 } else if (CC_EQ(s,i, "space")) {
190 } else if (CC_EQ(s,i, "upper")) {
193 } else if (CC_EQ(s,i, "xdigit")) {
196 } else /* malformed [:class:] string */
198 p_ch = 0; /* This makes "prev_ch" get set to 0. */
199 } else if (t_ch == p_ch)
201 } while (prev_ch = p_ch, (p_ch = *++p) != ']');
202 if (matched == special || t_ch == '/')
208 return *text == '\0';
211 /* Match the "pattern" against the "text" string. */
212 int wildmatch(const char *pattern, const char *text)
214 #ifdef WILD_TEST_ITERATIONS
215 wildmatch_iteration_count = 0;
217 return dowild((const uchar*)pattern, (const uchar*)text) == TRUE;
220 /* Match the "pattern" against the forced-to-lower-case "text" string. */
221 int iwildmatch(const char *pattern, const char *text)
224 #ifdef WILD_TEST_ITERATIONS
225 wildmatch_iteration_count = 0;
227 force_lower_case = 1;
228 ret = dowild((const uchar*)pattern, (const uchar*)text) == TRUE;
229 force_lower_case = 0;