thodg/libgit2/src/errors.c

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• Hash : 1eab9f0e
  Author :
  Date : 2013-11-05T14:56:10
  

  error: Simplify giterr_detach

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• src/errors.c

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #include "common.h"
  #include "global.h"
  #include "posix.h"
  #include "buffer.h"
  #include <stdarg.h>
  
  /********************************************
   * New error handling
   ********************************************/
  
  static git_error g_git_oom_error = {
  	"Out of memory",
  	GITERR_NOMEMORY
  };
  
  static void set_error(int error_class, char *string)
  {
  	git_error *error = &GIT_GLOBAL->error_t;
  
  	git__free(error->message);
  
  	error->message = string;
  	error->klass = error_class;
  
  	GIT_GLOBAL->last_error = error;
  }
  
  void giterr_set_oom(void)
  {
  	GIT_GLOBAL->last_error = &g_git_oom_error;
  }
  
  void giterr_set(int error_class, const char *string, ...)
  {
  	git_buf buf = GIT_BUF_INIT;
  	va_list arglist;
  #ifdef GIT_WIN32
  	DWORD win32_error_code = (error_class == GITERR_OS) ? GetLastError() : 0;
  #endif
  	int error_code = (error_class == GITERR_OS) ? errno : 0;
  
  	va_start(arglist, string);
  	git_buf_vprintf(&buf, string, arglist);
  	va_end(arglist);
  
  	if (error_class == GITERR_OS) {
  #ifdef GIT_WIN32
  		char * win32_error = git_win32_get_error_message(win32_error_code);
  		if (win32_error) {
  			git_buf_PUTS(&buf, ": ");
  			git_buf_puts(&buf, win32_error);
  			git__free(win32_error);
  
  			SetLastError(0);
  		}
  		else
  #endif
  		if (error_code) {
  			git_buf_PUTS(&buf, ": ");
  			git_buf_puts(&buf, strerror(error_code));
  		}
  
  		if (error_code)
  			errno = 0;
  	}
  
  	if (!git_buf_oom(&buf))
  		set_error(error_class, git_buf_detach(&buf));
  }
  
  void giterr_set_str(int error_class, const char *string)
  {
  	char *message;
  
  	assert(string);
  
  	message = git__strdup(string);
  
  	if (message)
  		set_error(error_class, message);
  }
  
  int giterr_set_regex(const regex_t *regex, int error_code)
  {
  	char error_buf[1024];
  
  	assert(error_code);
  
  	regerror(error_code, regex, error_buf, sizeof(error_buf));
  	giterr_set_str(GITERR_REGEX, error_buf);
  
  	if (error_code == REG_NOMATCH)
  		return GIT_ENOTFOUND;
  
  	return GIT_EINVALIDSPEC;
  }
  
  void giterr_clear(void)
  {
  	set_error(0, NULL);
  	GIT_GLOBAL->last_error = NULL;
  
  	errno = 0;
  #ifdef GIT_WIN32
  	SetLastError(0);
  #endif
  }
  
  int giterr_detach(git_error *cpy)
  {
  	git_error *error = GIT_GLOBAL->last_error;
  
  	assert(cpy);
  
  	if (!error)
  		return -1;
  
  	cpy->message = error->message;
  	cpy->klass = error->klass;
  
  	error->message = NULL;
  	giterr_clear();
  
  	return 0;
  }
  
  const git_error *giterr_last(void)
  {
  	return GIT_GLOBAL->last_error;
  }
  

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