1 files changed, 0 insertions, 423 deletions

diff --git a/src/crlf.c b/src/crlf.c
deleted file mode 100644
index 406f7140f..000000000
--- a/src/crlf.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- * 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 "git2/attr.h"
-#include "git2/blob.h"
-#include "git2/index.h"
-#include "git2/sys/filter.h"
-
-#include "futils.h"
-#include "hash.h"
-#include "filter.h"
-#include "repository.h"
-
-typedef enum {
-	GIT_CRLF_UNDEFINED,
-	GIT_CRLF_BINARY,
-	GIT_CRLF_TEXT,
-	GIT_CRLF_TEXT_INPUT,
-	GIT_CRLF_TEXT_CRLF,
-	GIT_CRLF_AUTO,
-	GIT_CRLF_AUTO_INPUT,
-	GIT_CRLF_AUTO_CRLF,
-} git_crlf_t;
-
-struct crlf_attrs {
-	int attr_action; /* the .gitattributes setting */
-	int crlf_action; /* the core.autocrlf setting */
-
-	int auto_crlf;
-	int safe_crlf;
-	int core_eol;
-};
-
-struct crlf_filter {
-	git_filter f;
-};
-
-static git_crlf_t check_crlf(const char *value)
-{
-	if (GIT_ATTR_IS_TRUE(value))
-		return GIT_CRLF_TEXT;
-	else if (GIT_ATTR_IS_FALSE(value))
-		return GIT_CRLF_BINARY;
-	else if (GIT_ATTR_IS_UNSPECIFIED(value))
-		;
-	else if (strcmp(value, "input") == 0)
-		return GIT_CRLF_TEXT_INPUT;
-	else if (strcmp(value, "auto") == 0)
-		return GIT_CRLF_AUTO;
-
-	return GIT_CRLF_UNDEFINED;
-}
-
-static git_configmap_value check_eol(const char *value)
-{
-	if (GIT_ATTR_IS_UNSPECIFIED(value))
-		;
-	else if (strcmp(value, "lf") == 0)
-		return GIT_EOL_LF;
-	else if (strcmp(value, "crlf") == 0)
-		return GIT_EOL_CRLF;
-
-	return GIT_EOL_UNSET;
-}
-
-static int has_cr_in_index(const git_filter_source *src)
-{
-	git_repository *repo = git_filter_source_repo(src);
-	const char *path = git_filter_source_path(src);
-	git_index *index;
-	const git_index_entry *entry;
-	git_blob *blob;
-	const void *blobcontent;
-	git_object_size_t blobsize;
-	bool found_cr;
-
-	if (!path)
-		return false;
-
-	if (git_repository_index__weakptr(&index, repo) < 0) {
-		git_error_clear();
-		return false;
-	}
-
-	if (!(entry = git_index_get_bypath(index, path, 0)) &&
-		!(entry = git_index_get_bypath(index, path, 1)))
-		return false;
-
-	if (!S_ISREG(entry->mode)) /* don't crlf filter non-blobs */
-		return true;
-
-	if (git_blob_lookup(&blob, repo, &entry->id) < 0)
-		return false;
-
-	blobcontent = git_blob_rawcontent(blob);
-	blobsize    = git_blob_rawsize(blob);
-	if (!git__is_sizet(blobsize))
-		blobsize = (size_t)-1;
-
-	found_cr = (blobcontent != NULL &&
-		blobsize > 0 &&
-		memchr(blobcontent, '\r', (size_t)blobsize) != NULL);
-
-	git_blob_free(blob);
-	return found_cr;
-}
-
-static int text_eol_is_crlf(struct crlf_attrs *ca)
-{
-	if (ca->auto_crlf == GIT_AUTO_CRLF_TRUE)
-		return 1;
-	else if (ca->auto_crlf == GIT_AUTO_CRLF_INPUT)
-		return 0;
-
-	if (ca->core_eol == GIT_EOL_CRLF)
-		return 1;
-	if (ca->core_eol == GIT_EOL_UNSET && GIT_EOL_NATIVE == GIT_EOL_CRLF)
-		return 1;
-
-	return 0;
-}
-
-static git_configmap_value output_eol(struct crlf_attrs *ca)
-{
-	switch (ca->crlf_action) {
-	case GIT_CRLF_BINARY:
-		return GIT_EOL_UNSET;
-	case GIT_CRLF_TEXT_CRLF:
-		return GIT_EOL_CRLF;
-	case GIT_CRLF_TEXT_INPUT:
-		return GIT_EOL_LF;
-	case GIT_CRLF_UNDEFINED:
-	case GIT_CRLF_AUTO_CRLF:
-		return GIT_EOL_CRLF;
-	case GIT_CRLF_AUTO_INPUT:
-		return GIT_EOL_LF;
-	case GIT_CRLF_TEXT:
-	case GIT_CRLF_AUTO:
-		return text_eol_is_crlf(ca) ? GIT_EOL_CRLF : GIT_EOL_LF;
-	}
-
-	/* TODO: warn when available */
-	return ca->core_eol;
-}
-
-GIT_INLINE(int) check_safecrlf(
-	struct crlf_attrs *ca,
-	const git_filter_source *src,
-	git_buf_text_stats *stats)
-{
-	const char *filename = git_filter_source_path(src);
-
-	if (!ca->safe_crlf)
-		return 0;
-
-	if (output_eol(ca) == GIT_EOL_LF) {
-		/*
-		 * CRLFs would not be restored by checkout:
-		 * check if we'd remove CRLFs
-		 */
-		if (stats->crlf) {
-			if (ca->safe_crlf == GIT_SAFE_CRLF_WARN) {
-				/* TODO: issue a warning when available */
-			} else {
-				if (filename && *filename)
-					git_error_set(
-						GIT_ERROR_FILTER, "CRLF would be replaced by LF in '%s'",
-						filename);
-				else
-					git_error_set(
-						GIT_ERROR_FILTER, "CRLF would be replaced by LF");
-
-				return -1;
-			}
-		}
-	} else if (output_eol(ca) == GIT_EOL_CRLF) {
-		/*
-		 * CRLFs would be added by checkout:
-		 * check if we have "naked" LFs
-		 */
-		if (stats->crlf != stats->lf) {
-			if (ca->safe_crlf == GIT_SAFE_CRLF_WARN) {
-				/* TODO: issue a warning when available */
-			} else {
-				if (filename && *filename)
-					git_error_set(
-						GIT_ERROR_FILTER, "LF would be replaced by CRLF in '%s'",
-						filename);
-				else
-					git_error_set(
-						GIT_ERROR_FILTER, "LF would be replaced by CRLF");
-
-				return -1;
-			}
-		}
-	}
-
-	return 0;
-}
-
-static int crlf_apply_to_odb(
-	struct crlf_attrs *ca,
-	git_buf *to,
-	const git_buf *from,
-	const git_filter_source *src)
-{
-	git_buf_text_stats stats;
-	bool is_binary;
-	int error;
-
-	/* Binary attribute? Empty file? Nothing to do */
-	if (ca->crlf_action == GIT_CRLF_BINARY || !git_buf_len(from))
-		return GIT_PASSTHROUGH;
-
-	is_binary = git_buf_gather_text_stats(&stats, from, false);
-
-	/* Heuristics to see if we can skip the conversion.
-	 * Straight from Core Git.
-	 */
-	if (ca->crlf_action == GIT_CRLF_AUTO ||
-		ca->crlf_action == GIT_CRLF_AUTO_INPUT ||
-		ca->crlf_action == GIT_CRLF_AUTO_CRLF) {
-
-		if (is_binary)
-			return GIT_PASSTHROUGH;
-
-		/*
-		 * If the file in the index has any CR in it, do not convert.
-		 * This is the new safer autocrlf handling.
-		 */
-		if (has_cr_in_index(src))
-			return GIT_PASSTHROUGH;
-	}
-
-	if ((error = check_safecrlf(ca, src, &stats)) < 0)
-		return error;
-
-	/* If there are no CR characters to filter out, then just pass */
-	if (!stats.crlf)
-		return GIT_PASSTHROUGH;
-
-	/* Actually drop the carriage returns */
-	return git_buf_crlf_to_lf(to, from);
-}
-
-static int crlf_apply_to_workdir(
-	struct crlf_attrs *ca,
-	git_buf *to,
-	const git_buf *from)
-{
-	git_buf_text_stats stats;
-	bool is_binary;
-
-	/* Empty file? Nothing to do. */
-	if (git_buf_len(from) == 0 || output_eol(ca) != GIT_EOL_CRLF)
-		return GIT_PASSTHROUGH;
-
-	is_binary = git_buf_gather_text_stats(&stats, from, false);
-
-	/* If there are no LFs, or all LFs are part of a CRLF, nothing to do */
-	if (stats.lf == 0 || stats.lf == stats.crlf)
-		return GIT_PASSTHROUGH;
-
-	if (ca->crlf_action == GIT_CRLF_AUTO ||
-		ca->crlf_action == GIT_CRLF_AUTO_INPUT ||
-		ca->crlf_action == GIT_CRLF_AUTO_CRLF) {
-
-		/* If we have any existing CR or CRLF line endings, do nothing */
-		if (stats.cr > 0)
-			return GIT_PASSTHROUGH;
-
-		/* Don't filter binary files */
-		if (is_binary)
-			return GIT_PASSTHROUGH;
-	}
-
-	return git_buf_lf_to_crlf(to, from);
-}
-
-static int convert_attrs(
-	struct crlf_attrs *ca,
-	const char **attr_values,
-	const git_filter_source *src)
-{
-	int error;
-
-	memset(ca, 0, sizeof(struct crlf_attrs));
-
-	if ((error = git_repository__configmap_lookup(&ca->auto_crlf,
-		 git_filter_source_repo(src), GIT_CONFIGMAP_AUTO_CRLF)) < 0 ||
-		(error = git_repository__configmap_lookup(&ca->safe_crlf,
-		 git_filter_source_repo(src), GIT_CONFIGMAP_SAFE_CRLF)) < 0 ||
-		(error = git_repository__configmap_lookup(&ca->core_eol,
-		 git_filter_source_repo(src), GIT_CONFIGMAP_EOL)) < 0)
-		return error;
-
-	/* downgrade FAIL to WARN if ALLOW_UNSAFE option is used */
-	if ((git_filter_source_flags(src) & GIT_FILTER_ALLOW_UNSAFE) &&
-		ca->safe_crlf == GIT_SAFE_CRLF_FAIL)
-		ca->safe_crlf = GIT_SAFE_CRLF_WARN;
-
-	if (attr_values) {
-		/* load the text attribute */
-		ca->crlf_action = check_crlf(attr_values[2]); /* text */
-
-		if (ca->crlf_action == GIT_CRLF_UNDEFINED)
-			ca->crlf_action = check_crlf(attr_values[0]); /* crlf */
-
-		if (ca->crlf_action != GIT_CRLF_BINARY) {
-			/* load the eol attribute */
-			int eol_attr = check_eol(attr_values[1]);
-
-			if (ca->crlf_action == GIT_CRLF_AUTO && eol_attr == GIT_EOL_LF)
-				ca->crlf_action = GIT_CRLF_AUTO_INPUT;
-			else if (ca->crlf_action == GIT_CRLF_AUTO && eol_attr == GIT_EOL_CRLF)
-				ca->crlf_action = GIT_CRLF_AUTO_CRLF;
-			else if (eol_attr == GIT_EOL_LF)
-				ca->crlf_action = GIT_CRLF_TEXT_INPUT;
-			else if (eol_attr == GIT_EOL_CRLF)
-				ca->crlf_action = GIT_CRLF_TEXT_CRLF;
-		}
-
-		ca->attr_action = ca->crlf_action;
-	} else {
-		ca->crlf_action = GIT_CRLF_UNDEFINED;
-	}
-
-	if (ca->crlf_action == GIT_CRLF_TEXT)
-		ca->crlf_action = text_eol_is_crlf(ca) ? GIT_CRLF_TEXT_CRLF : GIT_CRLF_TEXT_INPUT;
-	if (ca->crlf_action == GIT_CRLF_UNDEFINED && ca->auto_crlf == GIT_AUTO_CRLF_FALSE)
-		ca->crlf_action = GIT_CRLF_BINARY;
-	if (ca->crlf_action == GIT_CRLF_UNDEFINED && ca->auto_crlf == GIT_AUTO_CRLF_TRUE)
-		ca->crlf_action = GIT_CRLF_AUTO_CRLF;
-	if (ca->crlf_action == GIT_CRLF_UNDEFINED && ca->auto_crlf == GIT_AUTO_CRLF_INPUT)
-		ca->crlf_action = GIT_CRLF_AUTO_INPUT;
-
-	return 0;
-}
-
-static int crlf_check(
-	git_filter *self,
-	void **payload, /* points to NULL ptr on entry, may be set */
-	const git_filter_source *src,
-	const char **attr_values)
-{
-	struct crlf_attrs ca;
-
-	GIT_UNUSED(self);
-
-	convert_attrs(&ca, attr_values, src);
-
-	if (ca.crlf_action == GIT_CRLF_BINARY)
-		return GIT_PASSTHROUGH;
-
-	*payload = git__malloc(sizeof(ca));
-	GIT_ERROR_CHECK_ALLOC(*payload);
-	memcpy(*payload, &ca, sizeof(ca));
-
-	return 0;
-}
-
-static int crlf_apply(
-	git_filter *self,
-	void **payload, /* may be read and/or set */
-	git_buf *to,
-	const git_buf *from,
-	const git_filter_source *src)
-{
-	/* initialize payload in case `check` was bypassed */
-	if (!*payload) {
-		int error = crlf_check(self, payload, src, NULL);
-
-		if (error < 0)
-			return error;
-	}
-
-	if (git_filter_source_mode(src) == GIT_FILTER_SMUDGE)
-		return crlf_apply_to_workdir(*payload, to, from);
-	else
-		return crlf_apply_to_odb(*payload, to, from, src);
-}
-
-static int crlf_stream(
-	git_writestream **out,
-	git_filter *self,
-	void **payload,
-	const git_filter_source *src,
-	git_writestream *next)
-{
-	return git_filter_buffered_stream_new(out,
-		self, crlf_apply, NULL, payload, src, next);
-}
-
-static void crlf_cleanup(
-	git_filter *self,
-	void       *payload)
-{
-	GIT_UNUSED(self);
-	git__free(payload);
-}
-
-git_filter *git_crlf_filter_new(void)
-{
-	struct crlf_filter *f = git__calloc(1, sizeof(struct crlf_filter));
-	if (f == NULL)
-		return NULL;
-
-	f->f.version = GIT_FILTER_VERSION;
-	f->f.attributes = "crlf eol text";
-	f->f.initialize = NULL;
-	f->f.shutdown = git_filter_free;
-	f->f.check    = crlf_check;
-	f->f.stream   = crlf_stream;
-	f->f.cleanup  = crlf_cleanup;
-
-	return (git_filter *)f;
-}