| | 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 | ** |
| | 8 | ** Modified by Wayne Davison to special-case '/' matching, to make '**' |
| | 9 | ** work differently than '*', and to fix the character-class code. |
| | 10 | */ |
| | 11 | |
| | 12 | #include "rsync.h" |
| | 13 | |
| | 14 | /* What character marks an inverted character class? */ |
| | 15 | #define NEGATE_CLASS '!' |
| | 16 | |
| | 17 | #define FALSE 0 |
| | 18 | #define TRUE 1 |
| | 19 | #define ABORT_ALL -1 |
| | 20 | #define ABORT_TO_STARSTAR -2 |
| | 21 | |
| | 22 | #ifdef WILD_TEST_ITERATIONS |
| | 23 | int wildmatch_iteration_count; |
| | 24 | #endif |
| | 25 | |
| | 26 | static int domatch(const char *p, const char *text) |
| | 27 | { |
| | 28 | int matched, special; |
| | 29 | char ch, prev; |
| | 30 | |
| | 31 | #ifdef WILD_TEST_ITERATIONS |
| | 32 | wildmatch_iteration_count++; |
| | 33 | #endif |
| | 34 | |
| | 35 | for ( ; (ch = *p) != '\0'; text++, p++) { |
| | 36 | if (*text == '\0' && ch != '*') |
| | 37 | return FALSE; |
| | 38 | switch (ch) { |
| | 39 | case '\\': |
| | 40 | /* Literal match with following character. Note that the test |
| | 41 | * in "default" handles the p[1] == '\0' failure case. */ |
| | 42 | ch = *++p; |
| | 43 | /* FALLTHROUGH */ |
| | 44 | default: |
| | 45 | if (*text != ch) |
| | 46 | return FALSE; |
| | 47 | continue; |
| | 48 | case '?': |
| | 49 | /* Match anything but '/'. */ |
| | 50 | if (*text == '/') |
| | 51 | return FALSE; |
| | 52 | continue; |
| | 53 | case '*': |
| | 54 | if (*++p == '*') { |
| | 55 | while (*++p == '*') {} |
| | 56 | special = TRUE; |
| | 57 | } |
| | 58 | else |
| | 59 | special = FALSE; |
| | 60 | if (*p == '\0') { |
| | 61 | /* Trailing "**" matches everything. Trailing "*" matches |
| | 62 | * only if there are no more slash characters. */ |
| | 63 | return special? TRUE : strchr(text, '/') == NULL; |
| | 64 | } |
| | 65 | for ( ; *text; text++) { |
| | 66 | if ((matched = domatch(p, text)) != FALSE) { |
| | 67 | if (!special || matched != ABORT_TO_STARSTAR) |
| | 68 | return matched; |
| | 69 | } |
| | 70 | else if (!special && *text == '/') |
| | 71 | return ABORT_TO_STARSTAR; |
| | 72 | } |
| | 73 | return ABORT_ALL; |
| | 74 | case '[': |
| | 75 | ch = *++p; |
| | 76 | /* Assign literal TRUE/FALSE because of "matched" comparison. */ |
| | 77 | special = ch == NEGATE_CLASS? TRUE : FALSE; |
| | 78 | if (special) { |
| | 79 | /* Inverted character class. */ |
| | 80 | ch = *++p; |
| | 81 | } |
| | 82 | prev = 0; |
| | 83 | matched = FALSE; |
| | 84 | do { |
| | 85 | if (!ch) |
| | 86 | return FALSE; |
| | 87 | if (ch == '-' && prev && p[1] && p[1] != ']') { |
| | 88 | if (*text <= *++p && *text >= prev) |
| | 89 | matched = TRUE; |
| | 90 | ch = 0; /* This makes "prev" get set to 0. */ |
| | 91 | } |
| | 92 | else if (*text == ch) |
| | 93 | matched = TRUE; |
| | 94 | } while (prev = ch, (ch = *++p) != ']'); |
| | 95 | if (matched == special) |
| | 96 | return FALSE; |
| | 97 | continue; |
| | 98 | } |
| | 99 | } |
| | 100 | |
| | 101 | return *text == '\0'; |
| | 102 | } |
| | 103 | |
| | 104 | int wildmatch(const char *p, const char *text) |
| | 105 | { |
| | 106 | #ifdef WILD_TEST_ITERATIONS |
| | 107 | wildmatch_iteration_count = 0; |
| | 108 | #endif |
| | 109 | return domatch(p, text) == TRUE; |
| | 110 | } |
Matt McCutchen's Web Site / rsync / rsync.git / blame_incremental