** Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
** Rich $alz is now <rsalz@bbn.com>.
**
-** Modified by Wayne Davison to special-case '/' matching and to fix
-** the character-class code.
+** Modified by Wayne Davison to special-case '/' matching, to make '**'
+** work differently than '*', and to fix the character-class code.
*/
#include "rsync.h"
/* What character marks an inverted character class? */
-#define NEGATE_CLASS '!'
+#define NEGATE_CLASS '!'
+#define NEGATE_CLASS2 '^'
-#define false 0
-#define true 1
+#define FALSE 0
+#define TRUE 1
+#define ABORT_ALL -1
+#define ABORT_TO_STARSTAR -2
-/* Look for pattern "p" in the "text" string. */
-int
-wildmatch(const char *p, const char *text)
+#define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
+ && *(class) == *(litmatch) \
+ && strncmp((char*)class, litmatch, len) == 0)
+
+#if defined STDC_HEADERS || !defined isascii
+# define ISASCII(c) 1
+#else
+# define ISASCII(c) isascii(c)
+#endif
+
+#ifdef isblank
+# define ISBLANK(c) (ISASCII(c) && isblank(c))
+#else
+# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#endif
+
+#ifdef isgraph
+# define ISGRAPH(c) (ISASCII(c) && isgraph(c))
+#else
+# define ISGRAPH(c) (ISASCII(c) && isprint(c) && !isspace(c))
+#endif
+
+#define ISPRINT(c) (ISASCII(c) && isprint(c))
+#define ISDIGIT(c) (ISASCII(c) && isdigit(c))
+#define ISALNUM(c) (ISASCII(c) && isalnum(c))
+#define ISALPHA(c) (ISASCII(c) && isalpha(c))
+#define ISCNTRL(c) (ISASCII(c) && iscntrl(c))
+#define ISLOWER(c) (ISASCII(c) && islower(c))
+#define ISPUNCT(c) (ISASCII(c) && ispunct(c))
+#define ISSPACE(c) (ISASCII(c) && isspace(c))
+#define ISUPPER(c) (ISASCII(c) && isupper(c))
+#define ISXDIGIT(c) (ISASCII(c) && isxdigit(c))
+
+#ifdef WILD_TEST_ITERATIONS
+int wildmatch_iteration_count;
+#endif
+
+static int force_lower_case = 0;
+
+/* Match pattern "p" against the a virtually-joined string consisting
+ * of "text" and any strings in array "a". */
+static int dowild(const uchar *p, const uchar *text, const uchar*const *a)
{
- int matched, special;
- char ch, prev;
+ uchar p_ch;
- for ( ; (ch = *p) != '\0'; text++, p++) {
- if (*text == '\0' && ch != '*')
- return false;
- switch (ch) {
+#ifdef WILD_TEST_ITERATIONS
+ wildmatch_iteration_count++;
+#endif
+
+ for ( ; (p_ch = *p) != '\0'; text++, p++) {
+ int matched, special;
+ uchar t_ch, prev_ch;
+ while ((t_ch = *text) == '\0') {
+ if (*a == NULL) {
+ if (p_ch != '*')
+ return ABORT_ALL;
+ break;
+ }
+ text = *a++;
+ }
+ if (force_lower_case && ISUPPER(t_ch))
+ t_ch = tolower(t_ch);
+ switch (p_ch) {
case '\\':
/* Literal match with following character. Note that the test
* in "default" handles the p[1] == '\0' failure case. */
- ch = *++p;
+ p_ch = *++p;
/* FALLTHROUGH */
default:
- if (*text != ch)
- return false;
+ if (t_ch != p_ch)
+ return FALSE;
continue;
case '?':
/* Match anything but '/'. */
- if (*text == '/')
- return false;
+ if (t_ch == '/')
+ return FALSE;
continue;
case '*':
if (*++p == '*') {
while (*++p == '*') {}
- special = true;
- }
- else
- special = false;
+ special = TRUE;
+ } else
+ special = FALSE;
if (*p == '\0') {
- /* Trailing "**" matches everything. */
- return special? true : strchr(text, '/') == 0;
+ /* Trailing "**" matches everything. Trailing "*" matches
+ * only if there are no more slash characters. */
+ if (!special) {
+ do {
+ if (strchr((char*)text, '/') != NULL)
+ return FALSE;
+ } while ((text = *a++) != NULL);
+ }
+ return TRUE;
}
- for ( ; *text; text++) {
- if (wildmatch(p, text))
- return true;
- if (!special && *text == '/')
- return false;
+ while (1) {
+ if (t_ch == '\0') {
+ if ((text = *a++) == NULL)
+ break;
+ t_ch = *text;
+ continue;
+ }
+ if ((matched = dowild(p, text, a)) != FALSE) {
+ if (!special || matched != ABORT_TO_STARSTAR)
+ return matched;
+ } else if (!special && t_ch == '/')
+ return ABORT_TO_STARSTAR;
+ t_ch = *++text;
}
- return false;
+ return ABORT_ALL;
case '[':
- special = *++p == NEGATE_CLASS ? true : false;
+ p_ch = *++p;
+#ifdef NEGATE_CLASS2
+ if (p_ch == NEGATE_CLASS2)
+ p_ch = NEGATE_CLASS;
+#endif
+ /* Assign literal TRUE/FALSE because of "matched" comparison. */
+ special = p_ch == NEGATE_CLASS? TRUE : FALSE;
if (special) {
/* Inverted character class. */
- p++;
+ p_ch = *++p;
}
- prev = 0;
- matched = false;
- ch = *p;
- if (ch == ']' || ch == '-') {
- if (*text == ch)
- matched = true;
- prev = ch;
- ch = *++p;
+ prev_ch = 0;
+ matched = FALSE;
+ do {
+ if (!p_ch)
+ return ABORT_ALL;
+ if (p_ch == '\\') {
+ p_ch = *++p;
+ if (!p_ch)
+ return ABORT_ALL;
+ if (t_ch == p_ch)
+ matched = TRUE;
+ } else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
+ p_ch = *++p;
+ if (p_ch == '\\') {
+ p_ch = *++p;
+ if (!p_ch)
+ return ABORT_ALL;
+ }
+ if (t_ch <= p_ch && t_ch >= prev_ch)
+ matched = TRUE;
+ p_ch = 0; /* This makes "prev_ch" get set to 0. */
+ } else if (p_ch == '[' && p[1] == ':') {
+ const uchar *s;
+ int i;
+ for (s = p += 2; (p_ch = *p) && p_ch != ']'; p++) {} /*SHARED ITERATOR*/
+ if (!p_ch)
+ return ABORT_ALL;
+ i = p - s - 1;
+ if (i < 0 || p[-1] != ':') {
+ /* Didn't find ":]", so treat like a normal set. */
+ p = s - 2;
+ p_ch = '[';
+ if (t_ch == p_ch)
+ matched = TRUE;
+ continue;
+ }
+ if (CC_EQ(s,i, "alnum")) {
+ if (ISALNUM(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "alpha")) {
+ if (ISALPHA(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "blank")) {
+ if (ISBLANK(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "cntrl")) {
+ if (ISCNTRL(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "digit")) {
+ if (ISDIGIT(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "graph")) {
+ if (ISGRAPH(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "lower")) {
+ if (ISLOWER(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "print")) {
+ if (ISPRINT(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "punct")) {
+ if (ISPUNCT(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "space")) {
+ if (ISSPACE(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "upper")) {
+ if (ISUPPER(t_ch))
+ matched = TRUE;
+ } else if (CC_EQ(s,i, "xdigit")) {
+ if (ISXDIGIT(t_ch))
+ matched = TRUE;
+ } else /* malformed [:class:] string */
+ return ABORT_ALL;
+ p_ch = 0; /* This makes "prev_ch" get set to 0. */
+ } else if (t_ch == p_ch)
+ matched = TRUE;
+ } while (prev_ch = p_ch, (p_ch = *++p) != ']');
+ if (matched == special || t_ch == '/')
+ return FALSE;
+ continue;
+ }
+ }
+
+ do {
+ if (*text)
+ return FALSE;
+ } while ((text = *a++) != NULL);
+
+ return TRUE;
+}
+
+/* Match literal string "s" against the a virtually-joined string consisting
+ * of "text" and any strings in array "a". */
+static int doliteral(const uchar *s, const uchar *text, const uchar*const *a)
+{
+ for ( ; *s != '\0'; text++, s++) {
+ while (*text == '\0') {
+ if ((text = *a++) == NULL)
+ return FALSE;
+ }
+ if (*text != *s)
+ return FALSE;
+ }
+
+ do {
+ if (*text)
+ return FALSE;
+ } while ((text = *a++) != NULL);
+
+ return TRUE;
+}
+
+/* Return the last "count" path elements from the concatenated string.
+ * We return a string pointer to the start of the string, and update the
+ * array pointer-pointer to point to any remaining string elements. */
+static const uchar *trailing_N_elements(const uchar*const **a_ptr, int count)
+{
+ const uchar*const *a = *a_ptr;
+ const uchar*const *first_a = a;
+
+ while (*a)
+ a++;
+
+ while (a != first_a) {
+ const uchar *s = *--a;
+ s += strlen((char*)s);
+ while (--s >= *a) {
+ if (*s == '/' && !--count) {
+ *a_ptr = a+1;
+ return s+1;
}
- for ( ; ch != ']'; prev = ch, ch = *++p) {
- if (!ch)
- return false;
- if (ch == '-' && prev && p[1] && p[1] != ']') {
- if (*text <= *++p && *text >= prev)
- matched = true;
- ch = 0;
- }
- else if (*text == ch)
- matched = true;
+ }
+ }
+
+ if (count == 1) {
+ *a_ptr = a+1;
+ return *a;
+ }
+
+ return NULL;
+}
+
+/* Match the "pattern" against the "text" string. */
+int wildmatch(const char *pattern, const char *text)
+{
+ static const uchar *nomore[1]; /* A NULL pointer. */
+#ifdef WILD_TEST_ITERATIONS
+ wildmatch_iteration_count = 0;
+#endif
+ return dowild((const uchar*)pattern, (const uchar*)text, nomore) == TRUE;
+}
+
+/* Match the "pattern" against the forced-to-lower-case "text" string. */
+int iwildmatch(const char *pattern, const char *text)
+{
+ static const uchar *nomore[1]; /* A NULL pointer. */
+ int ret;
+#ifdef WILD_TEST_ITERATIONS
+ wildmatch_iteration_count = 0;
+#endif
+ force_lower_case = 1;
+ ret = dowild((const uchar*)pattern, (const uchar*)text, nomore) == TRUE;
+ force_lower_case = 0;
+ return ret;
+}
+
+/* Match pattern "p" against the a virtually-joined string consisting
+ * of all the pointers in array "texts" (which has a NULL pointer at the
+ * end). The int "where" can be 0 (normal matching), > 0 (match only
+ * the trailing N slash-separated filename components of "texts"), or < 0
+ * (match the "pattern" at the start or after any slash in "texts"). */
+int wildmatch_array(const char *pattern, const char*const *texts, int where)
+{
+ const uchar *p = (const uchar*)pattern;
+ const uchar*const *a = (const uchar*const*)texts;
+ const uchar *text;
+ int matched;
+
+#ifdef WILD_TEST_ITERATIONS
+ wildmatch_iteration_count = 0;
+#endif
+
+ if (where > 0)
+ text = trailing_N_elements(&a, where);
+ else
+ text = *a++;
+ if (!text)
+ return FALSE;
+
+ if ((matched = dowild(p, text, a)) != TRUE && where < 0
+ && matched != ABORT_ALL) {
+ while (1) {
+ if (*text == '\0') {
+ if ((text = (uchar*)*a++) == NULL)
+ return FALSE;
+ continue;
}
- if (matched == special)
- return false;
- continue;
+ if (*text++ == '/' && (matched = dowild(p, text, a)) != FALSE
+ && matched != ABORT_TO_STARSTAR)
+ break;
}
}
+ return matched == TRUE;
+}
+
+/* Match literal string "s" against the a virtually-joined string consisting
+ * of all the pointers in array "texts" (which has a NULL pointer at the
+ * end). The int "where" can be 0 (normal matching), or > 0 (match
+ * only the trailing N slash-separated filename components of "texts"). */
+int litmatch_array(const char *string, const char*const *texts, int where)
+{
+ const uchar *s = (const uchar*)string;
+ const uchar*const *a = (const uchar* const*)texts;
+ const uchar *text;
+
+ if (where > 0)
+ text = trailing_N_elements(&a, where);
+ else
+ text = *a++;
+ if (!text)
+ return FALSE;
- return *text == '\0';
+ return doliteral(s, text, a) == TRUE;
}