[RFC] regular expression support in config files (try 2)

Oleh Nykyforchyn oleh.nyk at gmail.com
Tue May 31 06:06:02 PDT 2011


Add extended regexes support to InputClass Match* statements (try 2)

Any number of patterns can be written in one line either as
      MatchProduct "foo|!bar" "something|re:^else$" "you" "!regex:n..d"
or as
      MatchProduct "foo" "!bar|something" "regex:~else$" "you|!re:n..d"
etc. A regex ends at the end of the respective "piece", irrespective of '|'s.

Negated conditions prefixed by "!", regexes by "regex:" of "re:", can
be combined. All other modes can also be prefixed if someone misses them badly.
Heavy surgery I wanted to avoid by all costs.

Haven't tested and even compiled yet. Will do it now. Any comments on the idea and style
are welcome.


Signed-off-by: Oleh Nykyforchyn <oleh.nyk at gmail.com>
---
 hw/xfree86/common/xf86Xinput.c |  131 ++++++++------
 hw/xfree86/parser/InputClass.c |  404 +++++++++++++++++++++++++++++-----------
 hw/xfree86/parser/xf86Parser.h |   29 +++-
 3 files changed, 398 insertions(+), 166 deletions(-)

diff --git a/hw/xfree86/common/xf86Xinput.c b/hw/xfree86/common/xf86Xinput.c
index 26051ad..e125627
--- a/hw/xfree86/common/xf86Xinput.c
+++ b/hw/xfree86/common/xf86Xinput.c
@@ -444,76 +444,95 @@ HostOS(void)
 }
 
 static int
-match_substring(const char *attr, const char *pattern)
+multi_match(const char *attr, xf86MatchPattern *pattern)
 {
-    return (strstr(attr, pattern)) ? 0 : -1;
-}
-
-#ifdef HAVE_FNMATCH_H
-static int
-match_pattern(const char *attr, const char *pattern)
-{
-    return fnmatch(pattern, attr, 0);
-}
-#else
-#define match_pattern match_substring
-#endif
+    if (!pattern) return 0;
 
+    switch (pattern->mode)
+    {
+        case MATCH_IS_INVALID:
+            return 0;
+        case MATCH_IS_STRCMP:
+            return (strcmp(attr, pattern->str)) ? 0 : -1;
+        case MATCH_IS_STRCASECMP:
+            return (strcasecmp(attr, pattern->str)) ? 0 : -1;
+        /*
+         * If no Layout section is found, xf86ServerLayout.id becomes "(implicit)"
+         * It is convenient that "" in patterns means "no explicit layout"
+         */
+        case MATCH_IS_STRIMPLICIT:
+            if (*(pattern->str))
+                return (strcmp(attr, pattern->str)) ? 0 : -1;
+            else
+                return (strcmp(attr, "(implicit)")) ? 0 : -1;
+        case MATCH_IS_STRSTR:
+            return (strstr(attr, pattern->str)) ? 0 : -1;
+        case MATCH_IS_STRCASESTR:
+            return (strcasestr(attr, pattern->str)) ? 0 : -1;
 #ifdef HAVE_FNMATCH_H
-static int
-match_path_pattern(const char *attr, const char *pattern)
-{
-    return fnmatch(pattern, attr, FNM_PATHNAME);
-}
+        case MATCH_IS_FILENAME:
+            return (fnmatch(attr, pattern->str, 0)) ? 0 : -1;
+        case MATCH_IS_PATHNAME:
+            return (fnmatch(attr, pattern->str, FNM_PATHNAME)) ? 0 : -1;
 #else
-#define match_path_pattern match_substring
+        case MATCH_IS_FILENAME:
+            return (strstr(attr, pattern->str)) ? 0 : -1;
+        case MATCH_IS_PATHNAME:
+            return (strstr(attr, pattern->str)) ? 0 : -1;
 #endif
-
-/*
- * If no Layout section is found, xf86ServerLayout.id becomes "(implicit)"
- * It is convenient that "" in patterns means "no explicit layout"
- */
-static int
-match_string_implicit(const char *attr, const char *pattern)
-{
-    if (strlen(pattern)) {
-        return strcmp(attr, pattern);
-    } else {
-        return strcmp(attr,"(implicit)");
+        case MATCH_IS_REGEX:
+        default:
+            if (pattern->regex == NULL) {
+                int r;
+                if ((pattern->regex = malloc(sizeof(regex_t)) == NULL) {
+                    pattern->mode = MATCH_IS_INVALID;
+                    return -1;
+                }
+                r = regcomp(pattern->regex, pattern->str, REG_EXTENDED | REG_NOSUB);
+                if (r) { /* Wrong regex */
+                    regfree(pattern->regex);
+                    xf86Msg(X_ERROR, "Wrong regex: \"%s\"\n", pattern->str);
+                    pattern->mode = MATCH_IS_INVALID;
+                    return -1;
+                }
+            }
+            if (regexec(pattern->regex, attr,0, NULL, 0))
+                return -1;
+            else
+                return 0;
     }
 }
 
 /*
- * Match an attribute against a list of NULL terminated arrays of patterns.
+ * Match an attribute against a list of xf86MatchGroup's
  * If a pattern in each list entry is matched, return TRUE.
  */
 static Bool
-MatchAttrToken(const char *attr, struct list *patterns,
-               int (*compare)(const char *attr, const char *pattern))
+MatchAttrToken(const char *attr, struct list *groups)
 {
-    const xf86MatchGroup *group;
-
-    /* If there are no patterns, accept the match */
-    if (list_is_empty(patterns))
+    /* If there are no groups, accept the match */
+    if (list_is_empty(groups))
         return TRUE;
 
-    /* If there are patterns but no attribute, reject the match */
+    /* If there are groups but no attribute, reject the match */
     if (!attr)
         return FALSE;
 
     /*
-     * Otherwise, iterate the list of patterns ensuring each entry has a
+     * Otherwise, iterate the list of groups ensuring each entry has a
      * match. Each list entry is a separate Match line of the same type.
      */
-    list_for_each_entry(group, patterns, entry) {
-        char * const *cur;
+    list_for_each_entry(group, groups, entry) {
         Bool match = FALSE;
 
-        for (cur = group->values; *cur; cur++)
-            if ((*compare)(attr, *cur) == 0) {
-                match = TRUE;
-                break;
+        list_for_each_entry(pattern, group, entry) {
+            if multi_match(attr, pattern) {
+                if (pattern->is_negated) return FALSE;
+                else return TRUE;
             }
+            else if (pattern->is_negated)
+                match = TRUE;
+        }
         if (!match)
             return FALSE;
     }
@@ -531,31 +550,31 @@ InputClassMatches(const XF86ConfInputClassPtr iclass, const InputInfoPtr idev,
                   const InputAttributes *attrs)
 {
     /* MatchProduct substring */
-    if (!MatchAttrToken(attrs->product, &iclass->match_product, match_substring))
+    if (!MatchAttrToken(attrs->product, &iclass->match_product))
         return FALSE;
 
     /* MatchVendor substring */
-    if (!MatchAttrToken(attrs->vendor, &iclass->match_vendor, match_substring))
+    if (!MatchAttrToken(attrs->vendor, &iclass->match_vendor))
         return FALSE;
 
     /* MatchDevicePath pattern */
-    if (!MatchAttrToken(attrs->device, &iclass->match_device, match_path_pattern))
+    if (!MatchAttrToken(attrs->device, &iclass->match_device))
         return FALSE;
 
     /* MatchOS case-insensitive string */
-    if (!MatchAttrToken(HostOS(), &iclass->match_os, strcasecmp))
+    if (!MatchAttrToken(HostOS(), &iclass->match_os))
         return FALSE;
 
     /* MatchPnPID pattern */
-    if (!MatchAttrToken(attrs->pnp_id, &iclass->match_pnpid, match_pattern))
+    if (!MatchAttrToken(attrs->pnp_id, &iclass->match_pnpid))
         return FALSE;
 
     /* MatchUSBID pattern */
-    if (!MatchAttrToken(attrs->usb_id, &iclass->match_usbid, match_pattern))
+    if (!MatchAttrToken(attrs->usb_id, &iclass->match_usbid))
         return FALSE;
 
     /* MatchDriver string */
-    if (!MatchAttrToken(idev->driver, &iclass->match_driver, strcmp))
+    if (!MatchAttrToken(idev->driver, &iclass->match_driver))
         return FALSE;
 
     /*
@@ -569,7 +588,7 @@ InputClassMatches(const XF86ConfInputClassPtr iclass, const InputInfoPtr idev,
         if (!attrs->tags)
             return FALSE;
         for (tag = attrs->tags, match = FALSE; *tag; tag++) {
-            if (MatchAttrToken(*tag, &iclass->match_tag, strcmp)) {
+            if (MatchAttrToken(*tag, &iclass->match_tag)) {
                 match = TRUE;
                 break;
             }
@@ -579,9 +598,7 @@ InputClassMatches(const XF86ConfInputClassPtr iclass, const InputInfoPtr idev,
     }
 
     /* MatchLayout string */
-    if (!list_is_empty(&iclass->match_layout)) {
-        if (!MatchAttrToken(xf86ConfigLayout.id,
-                            &iclass->match_layout, match_string_implicit))
+    if (!MatchAttrToken(xf86ConfigLayout.id, &iclass->match_layout))
             return FALSE;
     }
 
diff --git a/hw/xfree86/parser/InputClass.c b/hw/xfree86/parser/InputClass.c
index 3f80170..20cc06b
--- a/hw/xfree86/parser/InputClass.c
+++ b/hw/xfree86/parser/InputClass.c
@@ -64,17 +64,72 @@ xf86ConfigSymTabRec InputClassTab[] =
 
 #define CLEANUP xf86freeInputClassList
 
-#define TOKEN_SEP "|"
+#define TOKEN_SEP '|'
+
+#define NEG_FLAG '!'
+
+static struct
+{
+    const char *prefix;
+    xf86MatchMode mode;
+}
+mode_prefixes[] = {
+    { "regex:",   MATCH_IS_REGEX },
+    { "re:",      MATCH_IS_REGEX },
+    { NULL,       MATCH_IS_INVALID }
+}
 
 static void
-add_group_entry(struct list *head, char **values)
+add_to_group_entry(xf86MatchGroup **group, const char *str,
+                   xf86MatchMode pref_mode)
 {
-    xf86MatchGroup *group;
+    xf86MatchPattern *pattern;
+    unsigned n;
+    char *next;
+
+    if (!str) return;
 
-    group = malloc(sizeof(*group));
-    if (group) {
-        group->values = values;
-        list_add(&group->entry, head);
+    if {!*group) {
+        *group = malloc(sizeof(**group));
+        if (!*group) return;
+        list_init(&(*group)->patterns);
+    }
+
+  again:
+    /* not negated, MATCH_IS_AUTO */
+    if ((pattern = calloc(sizeof(*pattern),1) == NULL)
+        return;
+    list_add(&pattern->entry, (*group)->patterns);
+
+    if (*str == NEG_FLAG) {
+        pattern->is_negated = TRUE;
+        str++;
+    }
+
+    for (n=0; mode_prefixes[n].prefix; n++) {
+        if (!strncmp(str, mode_prefixes[n].prefix,
+                     strlen(mode_prefixes[n].prefix))) {
+            pattern->mode = mode_prefixes[n].mode;
+            str += strlen(mode_prefixes[n].prefix);
+            break;
+        }
+    }
+
+    if (pattern->mode == MATCH_IS_AUTO)
+        pattern->mode = pref_mode;
+
+    if (next = index(str, TOKEN_SEP))
+        n = next-str;
+    else
+        n = strlen(str);
+
+    if ((pattern->str = strndup(str, n) == NULL) {
+        pattern->mode = MATCH_IS_INVALID;
+    }
+
+    if (next) {
+        str = next+1;
+        goto again;
     }
 }
 
@@ -83,6 +138,7 @@ xf86parseInputClassSection(void)
 {
     int has_ident = FALSE;
     int token;
+    xf86MatchGroup group;
 
     parsePrologue(XF86ConfInputClassPtr, XF86ConfInputClassRec)
 
@@ -98,6 +154,8 @@ xf86parseInputClassSection(void)
     list_init(&ptr->match_layout);
 
     while ((token = xf86getToken(InputClassTab)) != ENDSECTION) {
+      again:
+        group = NULL;
         switch (token) {
         case COMMENT:
             ptr->comment = xf86addComment(ptr->comment, val.str);
@@ -124,59 +182,86 @@ xf86parseInputClassSection(void)
             ptr->option_lst = xf86parseOption(ptr->option_lst);
             break;
         case MATCH_PRODUCT:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_STRSTR)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_product);
+            else
                 Error(QUOTE_MSG, "MatchProduct");
-            add_group_entry(&ptr->match_product,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_VENDOR:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_STRSTR)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_vendor);
+            else
                 Error(QUOTE_MSG, "MatchVendor");
-            add_group_entry(&ptr->match_vendor,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_DEVICE_PATH:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
-                Error(QUOTE_MSG, "MatchDevicePath");
-            add_group_entry(&ptr->match_device,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_PATHNAME)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_device);
+            else
+                Error(QUOTE_MSG, "MatchDevice");
+            goto again;
         case MATCH_OS:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_STRCASECMP)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_os);
+            else
                 Error(QUOTE_MSG, "MatchOS");
-            add_group_entry(&ptr->match_os,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_PNPID:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_FILENAME)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_pnpid);
+            else
                 Error(QUOTE_MSG, "MatchPnPID");
-            add_group_entry(&ptr->match_pnpid,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_USBID:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_FILENAME)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_usbid);
+            else
                 Error(QUOTE_MSG, "MatchUSBID");
-            add_group_entry(&ptr->match_usbid,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_DRIVER:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_STRCMP)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_driver);
+            else
                 Error(QUOTE_MSG, "MatchDriver");
-            add_group_entry(&ptr->match_driver,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_TAG:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_STRCMP)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_tag);
+            else
                 Error(QUOTE_MSG, "MatchTag");
-            add_group_entry(&ptr->match_tag,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_LAYOUT:
-            if (xf86getSubToken(&(ptr->comment)) != STRING)
+            while (xf86getSubToken(&(ptr->comment)) == STRING) {
+                add_to_group_entry(&group, val.str, MATCH_IS_STRIMPLICIT)
+            }
+            if (group)
+                list_add(group->entry, &ptr->match_layout);
+            else
                 Error(QUOTE_MSG, "MatchLayout");
-            add_group_entry(&ptr->match_layout,
-                            xstrtokenize(val.str, TOKEN_SEP));
-            break;
+            goto again;
         case MATCH_IS_KEYBOARD:
             if (xf86getSubToken(&(ptr->comment)) != STRING)
                 Error(QUOTE_MSG, "MatchIsKeyboard");
@@ -245,9 +330,30 @@ xf86parseInputClassSection(void)
 }
 
 void
+xf86printMatchPattern(FILE * cf, xf86MatchPattern *pattern)
+{
+    if (!pattern) return;
+
+    if (pattern->is_negated) fprintf(cf, "!");
+    if (pattern->mode == MATCH_IS_INVALID)
+        fprintf(cf, "invalid:");
+    else {
+        unsigned n;
+        for (n=0; mode_prefixes[n].prefix; n+) {
+            if (mode_prefixes[n].mode == pattern->mode) {
+                fprintf(cf, mode_prefixes[n].prefix);
+                break;
+            }
+        }
+    }
+    fprintf(cf, pattern->str);
+}
+
+void
 xf86printInputClassSection (FILE * cf, XF86ConfInputClassPtr ptr)
 {
     const xf86MatchGroup *group;
+    const xf86MatchPattern *pattern;
     char * const *cur;
 
     while (ptr) {
@@ -261,66 +367,84 @@ xf86printInputClassSection (FILE * cf, XF86ConfInputClassPtr ptr)
 
         list_for_each_entry(group, &ptr->match_product, entry) {
             fprintf(cf, "\tMatchProduct    \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_product, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_vendor, entry) {
             fprintf(cf, "\tMatchVendor     \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_vendor, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_device, entry) {
             fprintf(cf, "\tMatchDevicePath \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_device, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_os, entry) {
             fprintf(cf, "\tMatchOS         \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_os, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_pnpid, entry) {
             fprintf(cf, "\tMatchPnPID      \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_pnpid, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_usbid, entry) {
             fprintf(cf, "\tMatchUSBID      \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_usbid, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_driver, entry) {
             fprintf(cf, "\tMatchDriver     \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_driver, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_tag, entry) {
             fprintf(cf, "\tMatchTag        \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_tag, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
         list_for_each_entry(group, &ptr->match_layout, entry) {
             fprintf(cf, "\tMatchLayout     \"");
-            for (cur = group->values; *cur; cur++)
-                fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
-                        *cur);
-            fprintf(cf, "\"\n");
+            list_for_each_entry(pattern, &ptr->match_layout, entry) {
+                fprintf(cf, " \"");
+                xf86printMatchPattern(cf, pattern);
+                fprintf(cf, "\"");
+            }
+            fprintf(cf, "\n");
         }
 
         if (ptr->is_keyboard.set)
@@ -353,64 +477,128 @@ xf86freeInputClassList (XF86ConfInputClassPtr ptr)
     XF86ConfInputClassPtr prev;
 
     while (ptr) {
-        xf86MatchGroup *group, *next;
+        xf86MatchGroup *group, *next_group;
+        xf86MatchPattern *pattern, *next_pattern;
         char **list;
 
         TestFree(ptr->identifier);
         TestFree(ptr->driver);
 
-        list_for_each_entry_safe(group, next, &ptr->match_product, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_product, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_vendor, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_vendor, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_device, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_device, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_os, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_os, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_pnpid, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_pnpid, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_usbid, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_usbid, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_driver, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_driver, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_tag, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_tag, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
-        list_for_each_entry_safe(group, next, &ptr->match_layout, entry) {
+        list_for_each_entry_safe(group, next_group, &ptr->match_layout, entry) {
             list_del(&group->entry);
-            for (list = group->values; *list; list++)
-                free(*list);
+            list_for_each_entry_safe(pattern, next_pattern, &group->patterns, entry) {
+                list_del(&pattern->entry);
+                if (pattern->str) free(pattern->str);
+                if ((pattern->mode == MATCH_IS_REGEX) && pattern->regex) {
+                    regfree(pattern->regex);
+                    free(pattern->regex);
+                }
+                free(pattern);
+            }
             free(group);
         }
 
diff --git a/hw/xfree86/parser/xf86Parser.h b/hw/xfree86/parser/xf86Parser.h
index a8785c5..01802da
--- a/hw/xfree86/parser/xf86Parser.h
+++ b/hw/xfree86/parser/xf86Parser.h
@@ -341,10 +341,37 @@ xf86TriState;
 typedef struct
 {
 	struct list entry;
-	char **values;
+	struct list patterns;
 }
 xf86MatchGroup;
 
+typedef enum
+{
+	MATCH_IS_INVALID = -1,
+	MATCH_IS_AUTO = 0,
+	MATCH_IS_STRCMP,
+	MATCH_IS_STRCASECMP,
+	MATCH_IS_STRIMPLICIT,
+	MATCH_IS_STRSTR,
+	MATCH_IS_STRCASESTR,
+	MATCH_IS_FILENAME,
+	MATCH_IS_PATHNAME,
+	MATCH_IS_REGEX
+}
+xf86MatchMode;
+
+
+typedef struct
+{
+	struct list entry;
+	Bool is_negated;
+	xf86MatchMode mode;
+	char *str;
+	regex_t *regex;
+	}
+}
+xf86MatchPattern;
+
 typedef struct
 {
 	GenericListRec list;
-- 
1.6.4



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