From 1c4dfb5efd0d992cd324ffcaae545f5d4edff129 Mon Sep 17 00:00:00 2001 From: Michael Vrable Date: Fri, 18 May 2007 15:47:36 -0700 Subject: [PATCH] Add rudimentary command-line parsing and support for file exclusions. --- scandir.cc | 103 +++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 88 insertions(+), 15 deletions(-) diff --git a/scandir.cc b/scandir.cc index f8f6127..a82bc5e 100644 --- a/scandir.cc +++ b/scandir.cc @@ -1,25 +1,26 @@ /* Recursively descend the filesystem and visit each file. */ -#include -#include -#include #include #include #include -#include +#include #include -#include +#include +#include +#include +#include #include +#include #include #include -#include -#include -#include -#include #include -#include +#include +#include #include +#include +#include +#include #include "format.h" #include "localdb.h" @@ -55,6 +56,9 @@ std::set segment_list; void scandir(const string& path); +/* Selection of files to include/exclude in the snapshot. */ +std::list excludes; + /* Ensure contents of metadata are flushed to an object. */ void metadata_flush() { @@ -201,6 +205,16 @@ void scanfile(const string& path) // Set to true if the item is a directory and we should recursively scan bool recurse = false; + // Check this file against the include/exclude list to see if it should be + // considered + for (list::iterator i = excludes.begin(); + i != excludes.end(); ++i) { + if (path == *i) { + printf("Excluding %s\n", path.c_str()); + return; + } + } + dictionary file_info; lstat(path.c_str(), &stat_buf); @@ -340,22 +354,81 @@ void scandir(const string& path) for (vector::iterator i = contents.begin(); i != contents.end(); ++i) { const string& filename = *i; - scanfile(path + "/" + filename); + if (path == ".") + scanfile(filename); + else + scanfile(path + "/" + filename); } closedir(dir); } -int main(int argc, char *argv[]) +void usage(const char *program) { - block_buf = new char[LBS_BLOCK_SIZE]; + fprintf(stderr, + "Usage: %s [OPTION]... SOURCE DEST\n" + "Produce backup snapshot of files in SOURCE and store to DEST.\n" + "\n" + "Options:\n" + " --exclude=PATH exclude files in PATH from snapshot\n" + " --localdb=PATH local backup metadata is stored in PATH\n", + program); +} +int main(int argc, char *argv[]) +{ + string backup_source = "."; string backup_dest = "."; + string localdb_dir = ""; + + while (1) { + static struct option long_options[] = { + {"localdb", 1, 0, 0}, // 0 + {"exclude", 1, 0, 0}, // 1 + {NULL, 0, 0, 0}, + }; - if (argc > 1) - backup_dest = argv[1]; + int long_index; + int c = getopt_long(argc, argv, "", long_options, &long_index); + + if (c == -1) + break; + + if (c == 0) { + switch (long_index) { + case 0: // --localdb + localdb_dir = optarg; + break; + case 1: // --exclude + excludes.push_back(optarg); + break; + default: + fprintf(stderr, "Unhandled long option!\n"); + return 1; + } + } else { + usage(argv[0]); + return 1; + } + } + + if (argc < optind + 2) { + usage(argv[0]); + return 1; + } + + backup_source = argv[optind]; + backup_dest = argv[argc - 1]; + + if (localdb_dir == "") { + localdb_dir = backup_dest; + } + + printf("Source: %s, Dest: %s\n", + backup_source.c_str(), backup_dest.c_str()); tss = new TarSegmentStore(backup_dest); + block_buf = new char[LBS_BLOCK_SIZE]; /* Write a backup descriptor file, which says which segments are needed and * where to start to restore this snapshot. The filename is based on the -- 2.20.1