thodg/libgit2/src/win32/dir.c

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• Hash : 74fa4bfa
  Author :
  Date : 2012-02-28T16:14:47
  

  Update diff to use iterators This is a major reorganization of the diff code. This changes the diff functions to use the iterators for traversing the content. This allowed a lot of code to be simplified. Also, this moved the functions relating to outputting a diff into a new file (diff_output.c). This includes a number of other changes - adding utility functions, extending iterators, etc. plus more tests for the diff code. This also takes the example diff.c program much further in terms of emulating git-diff command line options.

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• src/win32/dir.c

• /*
   * Copyright (C) 2009-2012 the libgit2 contributors
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #define GIT__WIN32_NO_WRAP_DIR
  #include "dir.h"
  #include "utf-conv.h"
  #include "git2/windows.h"
  
  static int init_filter(char *filter, size_t n, const char *dir)
  {
  	size_t len = strlen(dir);
  
  	if (len+3 >= n)
  		return 0;
  
  	strcpy(filter, dir);
  	if (len && dir[len-1] != '/')
  		strcat(filter, "/");
  	strcat(filter, "*");
  
  	return 1;
  }
  
  git__DIR *git__opendir(const char *dir)
  {
  	char filter[4096];
  	wchar_t* filter_w;
  	git__DIR *new;
  
  	if (!dir || !init_filter(filter, sizeof(filter), dir))
  		return NULL;
  
  	new = git__malloc(sizeof(*new));
  	if (!new)
  		return NULL;
  
  	new->dir = git__malloc(strlen(dir)+1);
  	if (!new->dir) {
  		git__free(new);
  		return NULL;
  	}
  	strcpy(new->dir, dir);
  
  	filter_w = gitwin_to_utf16(filter);
  	new->h = FindFirstFileW(filter_w, &new->f);
  	git__free(filter_w);
  
  	if (new->h == INVALID_HANDLE_VALUE) {
  		git__free(new->dir);
  		git__free(new);
  		return NULL;
  	}
  	new->first = 1;
  
  	return new;
  }
  
  int git__readdir_ext(
  	git__DIR *d,
  	struct git__dirent *entry,
  	struct git__dirent **result,
  	int *is_dir)
  {
  	if (!d || !entry || !result || d->h == INVALID_HANDLE_VALUE)
  		return -1;
  
  	if (d->first)
  		d->first = 0;
  	else if (!FindNextFileW(d->h, &d->f)) {
  		*result = NULL;
  		return 0;
  	}
  
  	if (wcslen(d->f.cFileName) >= sizeof(entry->d_name))
  		return -1;
  
  	entry->d_ino = 0;
  	WideCharToMultiByte(
  		gitwin_get_codepage(), 0, d->f.cFileName, -1,
  		entry->d_name, GIT_PATH_MAX, NULL, NULL);
  
  	*result = entry;
  	if (is_dir != NULL)
  		*is_dir = ((d->f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
  
  	return 0;
  }
  
  struct git__dirent *git__readdir(git__DIR *d)
  {
  	struct git__dirent *result;
  	if (git__readdir_ext(d, &d->entry, &result, NULL) < 0)
  		return NULL;
  	return result;
  }
  
  void git__rewinddir(git__DIR *d)
  {
  	char filter[4096];
  	wchar_t* filter_w;
  
  	if (d) {
  		if (d->h != INVALID_HANDLE_VALUE)
  			FindClose(d->h);
  		d->h = INVALID_HANDLE_VALUE;
  		d->first = 0;
  
  		if (init_filter(filter, sizeof(filter), d->dir)) {
  			filter_w = gitwin_to_utf16(filter);
  			d->h = FindFirstFileW(filter_w, &d->f);
  			git__free(filter_w);
  
  			if (d->h != INVALID_HANDLE_VALUE)
  				d->first = 1;
  		}
  	}
  }
  
  int git__closedir(git__DIR *d)
  {
  	if (d) {
  		if (d->h != INVALID_HANDLE_VALUE)
  			FindClose(d->h);
  		if (d->dir)
  			git__free(d->dir);
  		git__free(d);
  	}
  	return 0;
  }
  
  

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