1 files changed, 310 insertions, 0 deletions
diff --git a/lib/util/util_strlist.c b/lib/util/util_strlist.c
new file mode 100644
index 0000000000..b069a11e38
--- /dev/null
+++ b/lib/util/util_strlist.c
@@ -0,0 +1,310 @@
+/* 
+   Unix SMB/CIFS implementation.
+   
+   Copyright (C) Andrew Tridgell 2005
+   Copyright (C) Jelmer Vernooij 2005
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/locale.h"
+
+#undef strcasecmp
+
+/**
+ * @file
+ * @brief String list manipulation
+ */
+
+/**
+  build a null terminated list of strings from a input string and a
+  separator list. The separator list must contain characters less than
+  or equal to 0x2f for this to work correctly on multi-byte strings
+*/
+_PUBLIC_ char **str_list_make(TALLOC_CTX *mem_ctx, const char *string, const char *sep)
+{
+	int num_elements = 0;
+	char **ret = NULL;
+
+	if (sep == NULL) {
+		sep = LIST_SEP;
+	}
+
+	ret = talloc_array(mem_ctx, char *, 1);
+	if (ret == NULL) {
+		return NULL;
+	}
+
+	while (string && *string) {
+		size_t len = strcspn(string, sep);
+		char **ret2;
+		
+		if (len == 0) {
+			string += strspn(string, sep);
+			continue;
+		}
+
+		ret2 = talloc_realloc(mem_ctx, ret, char *, num_elements+2);
+		if (ret2 == NULL) {
+			talloc_free(ret);
+			return NULL;
+		}
+		ret = ret2;
+
+		ret[num_elements] = talloc_strndup(ret, string, len);
+		if (ret[num_elements] == NULL) {
+			talloc_free(ret);
+			return NULL;
+		}
+
+		num_elements++;
+		string += len;
+	}
+
+	ret[num_elements] = NULL;
+
+	return ret;
+}
+
+/**
+ * build a null terminated list of strings from an argv-like input string 
+ * Entries are seperated by spaces and can be enclosed by quotes. 
+ * Does NOT support escaping
+ */
+_PUBLIC_ const char **str_list_make_shell(TALLOC_CTX *mem_ctx, const char *string, const char *sep)
+{
+	int num_elements = 0;
+	const char **ret = NULL;
+
+	ret = talloc_array(mem_ctx, const char *, 1);
+	if (ret == NULL) {
+		return NULL;
+	}
+
+	if (sep == NULL)
+		sep = " \t\n\r";
+
+	while (string && *string) {
+		size_t len = strcspn(string, sep);
+		char *element;
+		const char **ret2;
+		
+		if (len == 0) {
+			string += strspn(string, sep);
+			continue;
+		}
+
+		if (*string == '\"') {
+			string++;
+			len = strcspn(string, "\"");
+			element = talloc_strndup(ret, string, len);
+			string += len + 1;
+		} else {
+			element = talloc_strndup(ret, string, len);
+			string += len;
+		}
+
+		if (element == NULL) {
+			talloc_free(ret);
+			return NULL;
+		}
+
+		ret2 = talloc_realloc(mem_ctx, ret, const char *, num_elements+2);
+		if (ret2 == NULL) {
+			talloc_free(ret);
+			return NULL;
+		}
+		ret = ret2;
+
+		ret[num_elements] = element;	
+
+		num_elements++;
+	}
+
+	ret[num_elements] = NULL;
+
+	return ret;
+
+}
+
+/**
+ * join a list back to one string 
+ */
+_PUBLIC_ char *str_list_join(TALLOC_CTX *mem_ctx, const char **list, char seperator)
+{
+	char *ret = NULL;
+	int i;
+	
+	if (list[0] == NULL)
+		return talloc_strdup(mem_ctx, "");
+
+	ret = talloc_strdup(mem_ctx, list[0]);
+
+	for (i = 1; list[i]; i++) {
+		ret = talloc_asprintf_append_buffer(ret, "%c%s", seperator, list[i]);
+	}
+
+	return ret;
+}
+
+/** join a list back to one (shell-like) string; entries 
+ * seperated by spaces, using quotes where necessary */
+_PUBLIC_ char *str_list_join_shell(TALLOC_CTX *mem_ctx, const char **list, char sep)
+{
+	char *ret = NULL;
+	int i;
+	
+	if (list[0] == NULL)
+		return talloc_strdup(mem_ctx, "");
+
+	if (strchr(list[0], ' ') || strlen(list[0]) == 0) 
+		ret = talloc_asprintf(mem_ctx, "\"%s\"", list[0]);
+	else 
+		ret = talloc_strdup(mem_ctx, list[0]);
+
+	for (i = 1; list[i]; i++) {
+		if (strchr(list[i], ' ') || strlen(list[i]) == 0) 
+			ret = talloc_asprintf_append_buffer(ret, "%c\"%s\"", sep, list[i]);
+		else 
+			ret = talloc_asprintf_append_buffer(ret, "%c%s", sep, list[i]);
+	}
+
+	return ret;
+}
+
+/**
+  return the number of elements in a string list
+*/
+_PUBLIC_ size_t str_list_length(const char * const*list)
+{
+	size_t ret;
+	for (ret=0;list && list[ret];ret++) /* noop */ ;
+	return ret;
+}
+
+
+/**
+  copy a string list
+*/
+_PUBLIC_ char **str_list_copy(TALLOC_CTX *mem_ctx, const char **list)
+{
+	int i;
+	char **ret;
+
+	if (list == NULL)
+		return NULL;
+	
+	ret = talloc_array(mem_ctx, char *, str_list_length(list)+1);
+	if (ret == NULL) 
+		return NULL;
+
+	for (i=0;list && list[i];i++) {
+		ret[i] = talloc_strdup(ret, list[i]);
+		if (ret[i] == NULL) {
+			talloc_free(ret);
+			return NULL;
+		}
+	}
+	ret[i] = NULL;
+	return ret;
+}
+
+/**
+   Return true if all the elements of the list match exactly.
+ */
+_PUBLIC_ bool str_list_equal(const char **list1, const char **list2)
+{
+	int i;
+	
+	if (list1 == NULL || list2 == NULL) {
+		return (list1 == list2); 
+	}
+	
+	for (i=0;list1[i] && list2[i];i++) {
+		if (strcmp(list1[i], list2[i]) != 0) {
+			return false;
+		}
+	}
+	if (list1[i] || list2[i]) {
+		return false;
+	}
+	return true;
+}
+
+
+/**
+  add an entry to a string list
+*/
+_PUBLIC_ const char **str_list_add(const char **list, const char *s)
+{
+	size_t len = str_list_length(list);
+	const char **ret;
+
+	ret = talloc_realloc(NULL, list, const char *, len+2);
+	if (ret == NULL) return NULL;
+
+	ret[len] = talloc_strdup(ret, s);
+	if (ret[len] == NULL) return NULL;
+
+	ret[len+1] = NULL;
+
+	return ret;
+}
+
+/**
+  remove an entry from a string list
+*/
+_PUBLIC_ void str_list_remove(const char **list, const char *s)
+{
+	int i;
+
+	for (i=0;list[i];i++) {
+		if (strcmp(list[i], s) == 0) break;
+	}
+	if (!list[i]) return;
+
+	for (;list[i];i++) {
+		list[i] = list[i+1];
+	}
+}
+
+
+/**
+  return true if a string is in a list
+*/
+_PUBLIC_ bool str_list_check(const char **list, const char *s)
+{
+	int i;
+
+	for (i=0;list[i];i++) {
+		if (strcmp(list[i], s) == 0) return true;
+	}
+	return false;
+}
+
+/**
+  return true if a string is in a list, case insensitively
+*/
+_PUBLIC_ bool str_list_check_ci(const char **list, const char *s)
+{
+	int i;
+
+	for (i=0;list[i];i++) {
+		if (strcasecmp(list[i], s) == 0) return true;
+	}
+	return false;
+}
+
+