thodg/libgit2/tests-clar/core/env.c

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• Hash : 9e35d7fd
  Author :
  Date : 2012-05-24T13:44:24
  

  Fix bugs in UTF-8 <-> UTF-16 conversion The function to convert UTF-16 to UTF-8 was only allocating a buffer of wcslen(utf16str) bytes for the UTF-8 string, but that is not sufficient if you have multibyte characters, and so when those occured, the conversion was failing. This updates the conversion functions to use the Win APIs to calculate the correct buffer lengths. Also fixes a comparison in the unit tests that would fail if you did not have a particular environment variable set.

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• tests-clar/core/env.c

• #include "clar_libgit2.h"
  #include "fileops.h"
  #include "path.h"
  
  #ifdef GIT_WIN32
  
  #include "win32/utf-conv.h"
  
  static char *cl_getenv(const char *name)
  {
  	wchar_t *name_utf16 = gitwin_to_utf16(name);
  	DWORD value_len, alloc_len;
  	wchar_t *value_utf16;
  	char *value_utf8;
  
  	cl_assert(name_utf16);
  	alloc_len = GetEnvironmentVariableW(name_utf16, NULL, 0);
  	if (alloc_len <= 0)
  		return NULL;
  
  	cl_assert(value_utf16 = git__calloc(alloc_len, sizeof(wchar_t)));
  
  	value_len = GetEnvironmentVariableW(name_utf16, value_utf16, alloc_len);
  	cl_assert_equal_i(value_len, alloc_len - 1);
  
  	cl_assert(value_utf8 = gitwin_from_utf16(value_utf16));
  
  	git__free(value_utf16);
  
  	return value_utf8;
  }
  
  static int cl_setenv(const char *name, const char *value)
  {
  	wchar_t *name_utf16 = gitwin_to_utf16(name);
  	wchar_t *value_utf16 = value ? gitwin_to_utf16(value) : NULL;
  
  	cl_assert(name_utf16);
  	cl_assert(SetEnvironmentVariableW(name_utf16, value_utf16));
  
  	git__free(name_utf16);
  	git__free(value_utf16);
  
  	return 0;
  
  }
  #else
  
  #include <stdlib.h>
  #define cl_getenv(n)   getenv(n)
  #define cl_setenv(n,v) (v) ? setenv((n),(v),1) : unsetenv(n)
  
  #endif
  
  static char *env_home = NULL;
  #ifdef GIT_WIN32
  static char *env_userprofile = NULL;
  #endif
  
  void test_core_env__initialize(void)
  {
  	env_home = cl_getenv("HOME");
  #ifdef GIT_WIN32
  	env_userprofile = cl_getenv("USERPROFILE");
  #endif
  }
  
  void test_core_env__cleanup(void)
  {
  	cl_setenv("HOME", env_home);
  #ifdef GIT_WIN32
  	cl_setenv("USERPROFILE", env_userprofile);
  
  	git__free(env_home);
  	git__free(env_userprofile);
  #endif
  }
  
  void test_core_env__0(void)
  {
  	static char *home_values[] = {
  		"fake_home",
  		"fáke_hõme", /* all in latin-1 supplement */
  		"fĀke_Ĥome", /* latin extended */
  		"fακε_hοmέ",  /* having fun with greek */
  		"faงe_นome", /* now I have no idea, but thai characters */
  		"f\xe1\x9cx80ke_\xe1\x9c\x91ome", /* tagalog characters */
  		"\xe1\xb8\x9fẢke_hoṁe", /* latin extended additional */
  		"\xf0\x9f\x98\x98\xf0\x9f\x98\x82", /* emoticons */
  		NULL
  	};
  	git_buf path = GIT_BUF_INIT, found = GIT_BUF_INIT;
  	char **val;
  	char *check;
  
  	for (val = home_values; *val != NULL; val++) {
  
  		if (p_mkdir(*val, 0777) == 0) {
  			/* if we can't make the directory, let's just assume
  			 * we are on a filesystem that doesn't support the
  			 * characters in question and skip this test...
  			 */
  			cl_git_pass(git_path_prettify(&path, *val, NULL));
  
  			cl_git_pass(cl_setenv("HOME", path.ptr));
  
  			/* do a quick check that it was set correctly */
  			check = cl_getenv("HOME");
  			cl_assert_equal_s(path.ptr, check);
  #ifdef GIT_WIN32
  			git__free(check);
  
  			cl_git_pass(cl_setenv("USERPROFILE", path.ptr));
  
  			/* do a quick check that it was set correctly */
  			check = cl_getenv("USERPROFILE");
  			cl_assert_equal_s(path.ptr, check);
  			git__free(check);
  #endif
  
  			cl_git_pass(git_buf_puts(&path, "/testfile"));
  			cl_git_mkfile(path.ptr, "find me");
  
  			cl_git_pass(git_futils_find_global_file(&found, "testfile"));
  
  #ifdef GIT_WIN32
  			/* do another check with HOME unset */
  			cl_git_pass(cl_setenv("HOME", NULL));
  			cl_git_pass(git_futils_find_global_file(&found, "testfile"));
  #endif
  		}
  	}
  
  	git_buf_free(&path);
  	git_buf_free(&found);
  }
  

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