config: Add missing file

src/config_cache.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.
+ */
+
+#include "common.h"
+#include "fileops.h"
+#include "hashtable.h"
+#include "config.h"
+#include "git2/config.h"
+#include "vector.h"
+#include "filter.h"
+#include "repository.h"
+
+struct map_data {
+	const char *cvar_name;
+	git_cvar_map *maps;
+	size_t map_count;
+	int default_value;
+};
+
+/*
+ *	core.eol
+ *		Sets the line ending type to use in the working directory for
+ *	files that have the text property set. Alternatives are lf, crlf
+ *	and native, which uses the platform’s native line ending. The default
+ *	value is native. See gitattributes(5) for more information on
+ *	end-of-line conversion. 
+ */
+static git_cvar_map _cvar_map_eol[] = {
+	{GIT_CVAR_FALSE, NULL, GIT_EOL_UNSET},
+	{GIT_CVAR_STRING, "lf", GIT_EOL_LF},
+	{GIT_CVAR_STRING, "crlf", GIT_EOL_CRLF},
+	{GIT_CVAR_STRING, "native", GIT_EOL_NATIVE}
+};
+
+/*
+ *	core.autocrlf
+ *		Setting this variable to "true" is almost the same as setting 
+ *	the text attribute to "auto" on all files except that text files are
+ *	not guaranteed to be normalized: files that contain CRLF in the
+ *	repository will not be touched. Use this setting if you want to have
+ *	CRLF line endings in your working directory even though the repository
+ *	does not have normalized line endings. This variable can be set to input,
+ *	in which case no output conversion is performed.
+ */
+static git_cvar_map _cvar_map_autocrlf[] = {
+	{GIT_CVAR_FALSE, NULL, GIT_AUTO_CRLF_FALSE},
+	{GIT_CVAR_TRUE, NULL, GIT_AUTO_CRLF_TRUE},
+	{GIT_CVAR_STRING, "input", GIT_AUTO_CRLF_INPUT}
+};
+
+static struct map_data _cvar_maps[] = {
+	{"core.autocrlf", _cvar_map_autocrlf, ARRAY_SIZE(_cvar_map_autocrlf), GIT_AUTO_CRLF_DEFAULT},
+	{"core.eol", _cvar_map_eol, ARRAY_SIZE(_cvar_map_eol), GIT_EOL_DEFAULT}
+};
+
+int git_repository__cvar(int *out, git_repository *repo, git_cvar_cached cvar)
+{
+	*out = repo->cvar_cache[(int)cvar];
+
+	if (*out == GIT_CVAR_NOT_CACHED) {
+		struct map_data *data = &_cvar_maps[(int)cvar];
+		git_config *config;
+		int error;
+
+		error = git_repository_config__weakptr(&config, repo);
+		if (error < GIT_SUCCESS)
+			return error;
+
+		error = git_config_get_mapped(
+			config, data->cvar_name, data->maps, data->map_count, out);
+
+		if (error == GIT_ENOTFOUND)
+			*out = data->default_value;
+
+		else if (error < GIT_SUCCESS)
+			return error;
+
+		repo->cvar_cache[(int)cvar] = *out;
+	}
+
+	return GIT_SUCCESS;
+}
+
+void git_repository__cvar_cache_clear(git_repository *repo)
+{
+	int i;
+
+	for (i = 0; i < GIT_CVAR_CACHE_MAX; ++i)
+		repo->cvar_cache[i] = GIT_CVAR_NOT_CACHED;
+}
+