Add xy_str_end_with()

test_xy.c

@@ -24,6 +24,13 @@ main (int argc, char const *argv[])
   puts(xy_strjoin(4, "水落鱼梁浅，", "天寒梦泽深。", "羊公碑字在，", "读罢泪沾襟。"));
   puts(xy_strjoin(6, "楚山横地出，", "汉水接天回。", "冠盖非新里，", "章华即旧台。", "习池风景异，", "归路满尘埃。"));
 
+
+  putb(xy_str_end_with("abcdef", "abcdefg"));
+  putb(xy_str_end_with("abcdef", "def"));
+  putb(xy_str_end_with("abcdef", "bcdef"));
+  putb(xy_str_end_with("abcdef", "abcdef"));
+  putb(xy_str_end_with("abcdef", ""));
+
   xy_success("成功：输出成功内容");
   xy_info("信息: 输出信息内容");
   xy_warn("警告：输出警告内容");

xy.h

@@ -71,6 +71,7 @@
 
 #define putf(n) printf("%f\n", n)
 #define puti(n) printf("%d\n", n)
+#define putb(n) if(n) puts("true"); else puts("false");
 
 #define xy_arylen(x) (sizeof(x) / sizeof(x[0]))
 
@@ -279,4 +280,25 @@ xy_str_to_quietcmd (const char* cmd)
   return ret;
 }
 
+
+bool
+xy_str_end_with (const char* str, const char* suffix)
+{
+  size_t len1 = strlen(str);
+  size_t len2 = strlen(suffix);
+
+  if (0==len2)     return true;  // 空字符串直接返回
+  if (len1 < len2) return false;
+
+  const char* cur1 = str + len1 - 1;
+  const char* cur2 = suffix + len2 - 1;
+
+  for (int i=0; i<len2; i++)
+  {
+    if (*cur1 != *cur2) return false;
+    cur1--; cur2--;
+  }
+  return true;
+}
+
 #endif