Add lbs_str_has_prefix to check string prefixHEADmaster

2 files changed, 17 insertions, 0 deletions

diff --git a/l4str.c b/l4str.c
index 83cecae..4324056 100644
--- a/l4str.c
+++ b/l4str.c
@@ -7,6 +7,22 @@
 #include <stdlib.h>
 #include <string.h>
 
+bool lbs_str_has_prefix (const char* str, const char* prefix) {
+    int i;
+    for (i = 0; str[i] != '\0' && prefix[i] != '\0'; i++) {
+        if (str[i] != prefix[i]) {
+            return false;
+        }
+    }
+    if (str[i] == '\0' && prefix[i] == '\0') {
+        return true;
+    }
+    if (str[i] == '\0') {
+        return false;
+    }
+    return true;
+}
+
 bool lbs_str_has_suffix (const char* str, const char* suffix) {
     size_t len = strlen (str);
     size_t suflen = strlen (suffix);
diff --git a/l4str.h b/l4str.h
index b041e22..a926798 100644
--- a/l4str.h
+++ b/l4str.h
@@ -8,6 +8,7 @@
 #define LBS_STR_STATIC_STRLEN(x) (sizeof(x)/sizeof(char) - 1)
 #define LBS_STR_ARRAY_LEN(x,t)   (sizeof(x)/sizeof(t))
 
+bool    lbs_str_has_prefix       (const char* str, const char* prefix);
 bool    lbs_str_has_suffix       (const char* str, const char* suffix);
 char*   lbs_str_printf           (const char* format, ...);
 char*   lbs_str_vprintf          (const char* format, va_list ap);