added relative function

test/absolute_test.c

@@ -4,6 +4,33 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+int absolute_check()
+{
+  const char *relative_paths[] = {"..", "test", "test/test", "../another_test",
+    "./simple", ".././simple"};
+  const char *absolute_paths[] = {"/", "/test", "/../test/", "/../another_test",
+    "/./simple", "/.././simple"};
+  int i;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  for (i = 0; i < ARRAY_SIZE(relative_paths); ++i) {
+    if (cwk_path_is_absolute(relative_paths[i])) {
+      return EXIT_FAILURE;
+    }
+  }
+
+  for (i = 0; i < ARRAY_SIZE(absolute_paths); ++i) {
+    if (!cwk_path_is_absolute(absolute_paths[i])) {
+      return EXIT_FAILURE;
+    }
+  }
+
+  return EXIT_SUCCESS;
+}
+
 int absolute_too_far()
 {
   char buffer[FILENAME_MAX];
@@ -70,8 +97,7 @@ int absolute_relative_base()
   size_t length;
 
   cwk_path_set_style(CWK_STYLE_UNIX);
-  length = cwk_path_get_absolute("hello/there", "test", buffer,
-    sizeof(buffer));
+  length = cwk_path_get_absolute("hello/there", "test", buffer, sizeof(buffer));
 
   if (length != 17) {
     return EXIT_FAILURE;
@@ -110,8 +136,7 @@ int absolute_simple()
   size_t length;
 
   cwk_path_set_style(CWK_STYLE_UNIX);
-  length = cwk_path_get_absolute("/hello/there", "..", buffer,
-    sizeof(buffer));
+  length = cwk_path_get_absolute("/hello/there", "..", buffer, sizeof(buffer));
 
   if (length != 6) {
     return EXIT_FAILURE;

test/relative_test.c

@@ -0,0 +1,131 @@
+#include <cwalk.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory.h>
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+int relative_check()
+{
+  const char *relative_paths[] = {"..", "test", "test/test", "../another_test",
+    "./simple", ".././simple"};
+  const char *absolute_paths[] = {"/", "/test", "/../test/", "/../another_test",
+    "/./simple", "/.././simple"};
+  int i;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  for (i = 0; i < ARRAY_SIZE(relative_paths); ++i) {
+    if (!cwk_path_is_relative(relative_paths[i])) {
+      return EXIT_FAILURE;
+    }
+  }
+
+  for (i = 0; i < ARRAY_SIZE(absolute_paths); ++i) {
+    if (cwk_path_is_relative(absolute_paths[i])) {
+      return EXIT_FAILURE;
+    }
+  }
+
+  return EXIT_SUCCESS;
+}
+
+int relative_equal()
+{
+  char result[FILENAME_MAX];
+  size_t length;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  length = cwk_path_get_relative("/path/same", "/path/same",
+    result, sizeof(result));
+  if(length != 1) {
+    return EXIT_FAILURE;
+  }
+
+  if(strcmp(result, ".") != 0){
+    return EXIT_FAILURE;
+  }
+
+  return EXIT_SUCCESS;
+}
+
+int relative_long_target()
+{
+  char result[FILENAME_MAX];
+  size_t length;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  length = cwk_path_get_relative("/path/long/one", "/path/long/one/two",
+    result, sizeof(result));
+  if(length != 3) {
+    return EXIT_FAILURE;
+  }
+
+  if(strcmp(result, "two") != 0){
+    return EXIT_FAILURE;
+  }
+
+  return EXIT_SUCCESS;
+}
+
+int relative_long_base()
+{
+  char result[FILENAME_MAX];
+  size_t length;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  length = cwk_path_get_relative("/path/long/one/two", "/path/long/one",
+    result, sizeof(result));
+  if(length != 2) {
+    return EXIT_FAILURE;
+  }
+
+  if(strcmp(result, "..") != 0){
+    return EXIT_FAILURE;
+  }
+
+  return EXIT_SUCCESS;
+}
+
+int relative_relative()
+{
+  char result[FILENAME_MAX];
+  size_t length;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  length = cwk_path_get_relative("./this/is/path_one", "./this/is/path_two",
+    result, sizeof(result));
+  if(length != 11) {
+    return EXIT_FAILURE;
+  }
+
+  if(strcmp(result, "../path_two") != 0){
+    return EXIT_FAILURE;
+  }
+
+  return EXIT_SUCCESS;
+}
+
+int relative_simple()
+{
+  char result[FILENAME_MAX];
+  size_t length;
+
+  cwk_path_set_style(CWK_STYLE_UNIX);
+
+  length = cwk_path_get_relative("/this/is/path_one", "/this/is/path_two",
+    result, sizeof(result));
+  if(length != 11) {
+    return EXIT_FAILURE;
+  }
+
+  if(strcmp(result, "../path_two") != 0){
+    return EXIT_FAILURE;
+  }
+
+  return EXIT_SUCCESS;
+}