added dap_strcmp() and dap_strncmp() for nullable strings

core/dap_strfuncs.c

@@ -8,7 +8,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
-#include <time.h>
 #include <errno.h>
 
 #include "dap_common.h"
@@ -23,7 +22,6 @@ char *strndup(char *str, int len) {
 }
 #endif
 
-
 /**
  * dap_strlen:
  * @a_str: (nullable): the string
@@ -42,6 +40,36 @@ size_t dap_strlen(const char *a_str)
     return l_length;
 }
 
+/**
+ * dap_strcmp:
+ * @a_str1: (nullable): the string
+ * @a_str2: (nullable): the string
+ *
+ * Compare a_str1 and a_str2
+ */
+int dap_strcmp(const char *a_str1, const char *a_str2)
+{
+    if(a_str1 && a_str2) {
+        return strcmp(a_str1, a_str2);
+    }
+    return -1;
+}
+
+/**
+ * dap_strcmp:
+ * @a_str1: (nullable): the string
+ * @a_str2: (nullable): the string
+ *
+ * Compare a_n characters of a_str1 and a_str2
+ */
+int dap_strncmp(const char *a_str1, const char *a_str2, size_t a_n)
+{
+    if(a_str1 && a_str2) {
+        return strncmp(a_str1, a_str2, a_n);
+    }
+    return -1;
+}
+
 /**
  * dap_strdup:
  * @a_str: (nullable): the string to duplicate
@@ -115,27 +143,27 @@ char* dap_strdup_printf(const char *a_format, ...)
 }
 
 /*
-// alternative version
-char* dap_strdup_printf2(const char *a_format, ...)
-{
-    size_t l_buffer_size = 0;
-    char *l_buffer = NULL;
-    va_list l_args;
-
-    va_start(l_args, a_format);
-    l_buffer_size += vsnprintf(l_buffer, 0, a_format, l_args);
-    va_end(l_args);
-
-    if(!l_buffer_size)
-        return NULL;
-    l_buffer = DAP_NEW_SIZE(char, l_buffer_size + 1);
-
-    va_start(l_args, a_format);
-    vsnprintf(l_buffer, l_buffer_size + 1, a_format, l_args);
-    va_end(l_args);
-
-    return l_buffer;
-}*/
+ // alternative version
+ char* dap_strdup_printf2(const char *a_format, ...)
+ {
+ size_t l_buffer_size = 0;
+ char *l_buffer = NULL;
+ va_list l_args;
+
+ va_start(l_args, a_format);
+ l_buffer_size += vsnprintf(l_buffer, 0, a_format, l_args);
+ va_end(l_args);
+
+ if(!l_buffer_size)
+ return NULL;
+ l_buffer = DAP_NEW_SIZE(char, l_buffer_size + 1);
+
+ va_start(l_args, a_format);
+ vsnprintf(l_buffer, l_buffer_size + 1, a_format, l_args);
+ va_end(l_args);
+
+ return l_buffer;
+ }*/
 
 /**
  * dap_stpcpy:

core/dap_strfuncs.h

@@ -33,6 +33,11 @@
 #define clamp(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
 
 size_t dap_strlen(const char *a_str);
+// compare a_str1 and a_str2
+int dap_strcmp(const char *a_str1, const char *a_str2);
+// compare a_n characters of a_str1 and a_str2
+int dap_strncmp(const char *a_str1, const char *a_str2, size_t a_n);
+// duplicates a string
 char* dap_strdup(const char *a_str);
 char* dap_strdup_vprintf(const char *a_format, va_list a_args);
 char* dap_strdup_printf(const char *a_format, ...);
@@ -66,4 +71,3 @@ char* dap_strreverse(char *a_string);
 #define DAP_USEC_PER_SEC 1000000
 void dap_usleep(time_t a_microseconds);
 
-