mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 08:47:12 +03:00
ab3a7cb21f
Summary: In preparation for merging fb-mercurial sources to the Eden repository, move everything from the top-level directory into an `eden/scm` subdirectory.
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
// Copyright (c) 2004-present, Facebook, Inc.
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// All Rights Reserved.
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//
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// This software may be used and distributed according to the terms of the
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// GNU General Public License version 2 or any later version.
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// cdatapack_dump.c: Dump the entire contents of a datapack file by walking
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// the datapack file.
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// no-check-code
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#include <inttypes.h>
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#include <memory.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "cdatapack/cdatapack.h"
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#include "clib/convert.h"
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#define DATAIDX_EXT ".dataidx"
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#define DATAPACK_EXT ".datapack"
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int main(int argc, char* argv[]) {
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if (argc < 2) {
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fprintf(stderr, "%s <path>\n", argv[0]);
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exit(1);
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}
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long len = strlen(argv[1]);
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char* idx_path = (char*)malloc(len + sizeof(DATAIDX_EXT));
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char* data_path = (char*)malloc(len + sizeof(DATAPACK_EXT));
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if (idx_path == NULL || data_path == NULL) {
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free(idx_path);
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free(data_path);
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fprintf(stderr, "Failed to allocate memory for idx_path or data_path\n");
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exit(1);
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}
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sprintf(idx_path, "%s%s", argv[1], DATAIDX_EXT);
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sprintf(data_path, "%s%s", argv[1], DATAPACK_EXT);
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datapack_handle_t* handle =
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open_datapack(idx_path, strlen(idx_path), data_path, strlen(data_path));
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free(data_path);
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free(idx_path);
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if (handle->status != DATAPACK_HANDLE_OK) {
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fprintf(stderr, "failed to open pack: %d\n", handle->status);
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return 1;
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}
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const uint8_t* ptr = handle->data_mmap;
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const uint8_t* end = ptr + handle->data_file_sz;
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ptr += 1; // for the version field.
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const char* last_filename = NULL;
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uint16_t last_filename_sz = 0;
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char node_buffer[NODE_SZ * 2];
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char deltabase_buffer[NODE_SZ * 2];
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while (ptr < end) {
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delta_chain_link_t link;
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get_delta_chain_link_result_t next;
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next = getdeltachainlink(handle, ptr, &link);
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ptr = next.ptr;
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if (last_filename_sz != link.filename_sz ||
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memcmp(last_filename, link.filename, last_filename_sz) != 0) {
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// print the filename
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printf("\n%-.*s\n", (int)link.filename_sz, link.filename);
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last_filename_sz = link.filename_sz;
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last_filename = link.filename;
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}
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hexlify(link.node, NODE_SZ, node_buffer);
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hexlify(link.deltabase_node, NODE_SZ, deltabase_buffer);
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printf(
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"%-*s %-*s %s\n",
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NODE_SZ * 2,
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"Node",
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NODE_SZ * 2,
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"Delta Base",
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"Delta Length");
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printf(
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"%-.*s %-.*s %" PRIu64 "\n",
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NODE_SZ * 2,
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node_buffer,
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NODE_SZ * 2,
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deltabase_buffer,
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link.delta_sz);
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}
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close_datapack(handle);
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}
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