[lxc-devel] [patch 1/7] extend parsing interface with strtok-like utils

[Andrian Nord]

strtok is not very good, so this is lxc-way implementation. Required for
futher parsing interfaces.

Signed-off-by: Andrian Nord <NightNord at gmail.com>

diff --git a/src/lxc/parse.c b/src/lxc/parse.c
index b3d1194..4721d01 100644
--- a/src/lxc/parse.c
+++ b/src/lxc/parse.c
@@ -113,6 +113,52 @@ int lxc_char_right_gc(char *buffer, size_t len)
 	return 0;
 }
 
+int lxc_char_next_space(char *buffer, size_t len)
+{
+	int i;
+
+	for (i = 0; i < len; i++) {
+		if (buffer[i] == ' ' ||
+			buffer[i] == '\t' ||
+			buffer[i] == '\n' ||
+			buffer[i] == '\0')
+				return i;
+	}
+
+	return len;
+}
+
+char *lxc_next_token(char *buffer, int *anchor, size_t len)
+{
+	char *search_at, *token;
+	int token_length = 0;
+
+	if (*anchor >= len)
+		return NULL;
+
+	*anchor += lxc_char_left_gc(buffer + *anchor, len - *anchor);
+	search_at = buffer + *anchor;
+
+	token_length = lxc_char_next_space(search_at, len - *anchor);
+
+	if (!token_length)
+		return NULL;
+
+	*anchor += token_length;
+
+	token = malloc(token_length + 1);
+
+	if (!token) {
+		SYSERROR("failed to allocate memory");
+		return NULL;
+	}
+
+	strncpy(token, search_at, token_length);
+	*(token + token_length) = '\0';
+
+	return token;
+}
+
 int lxc_is_line_empty(char *line)
 {
 	int i;
diff --git a/src/lxc/parse.h b/src/lxc/parse.h
index a1cccea..5f502c2 100644
--- a/src/lxc/parse.h
+++ b/src/lxc/parse.h
@@ -38,6 +38,10 @@ extern int lxc_char_left_gc(char *buffer, size_t len);
 
 extern int lxc_char_right_gc(char *buffer, size_t len);
 
+extern int lxc_char_next_space(char *buffer, size_t len);
+
+extern char *lxc_next_token(char *buffer, int *anchor, size_t len);
+
 extern int lxc_is_line_empty(char *line);
 
 #endif