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/*
* 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 "fileops.h"
#include "hash.h"
#include "filter.h"
#include "repository.h"
#include "git2/config.h"
#include "blob.h"
int git_filters_load(git_vector *filters, git_repository *repo, const char *path, int mode)
{
int error;
if (mode == GIT_FILTER_TO_ODB) {
/* Load the CRLF cleanup filter when writing to the ODB */
error = git_filter_add__crlf_to_odb(filters, repo, path);
if (error < 0)
return error;
} else {
error = git_filter_add__crlf_to_workdir(filters, repo, path);
if (error < 0)
return error;
}
return (int)filters->length;
}
void git_filters_free(git_vector *filters)
{
size_t i;
git_filter *filter;
git_vector_foreach(filters, i, filter) {
if (filter->do_free != NULL)
filter->do_free(filter);
else
git__free(filter);
}
git_vector_free(filters);
}
int git_filters_apply(git_buf *dest, git_buf *source, git_vector *filters)
{
size_t i;
unsigned int src;
git_buf *dbuffer[2];
dbuffer[0] = source;
dbuffer[1] = dest;
src = 0;
if (git_buf_len(source) == 0) {
git_buf_clear(dest);
return 0;
}
/* Pre-grow the destination buffer to more or less the size
* we expect it to have */
if (git_buf_grow(dest, git_buf_len(source)) < 0)
return -1;
for (i = 0; i < filters->length; ++i) {
git_filter *filter = git_vector_get(filters, i);
unsigned int dst = 1 - src;
git_buf_clear(dbuffer[dst]);
/* Apply the filter from dbuffer[src] to the other buffer;
* if the filtering is canceled by the user mid-filter,
* we skip to the next filter without changing the source
* of the double buffering (so that the text goes through
* cleanly).
*/
if (filter->apply(filter, dbuffer[dst], dbuffer[src]) == 0)
src = dst;
if (git_buf_oom(dbuffer[dst]))
return -1;
}
/* Ensure that the output ends up in dbuffer[1] (i.e. the dest) */
if (src != 1)
git_buf_swap(dest, source);
return 0;
}
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