From 7912c07037cf704394e9bcb7cb24c05ee03aa921 Mon Sep 17 00:00:00 2001 From: Petr Baudis Date: Wed, 13 Apr 2005 02:02:34 -0700 Subject: [PATCH] [PATCH] ls-tree for listing trees ls-tree tool provides just a way to export the binary tree objects to a usable text format. This is bound to be useful in variety of scripts, although none of those I have currently uses it. But e.g. the simple script I've sent to HPA for purging the object database uses it. Signed-off-by: Petr Baudis --- Makefile | 7 +++++-- ls-tree.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+), 2 deletions(-) create mode 100644 ls-tree.c diff --git a/Makefile b/Makefile index dc6e5abfc..7c2c1b553 100644 --- a/Makefile +++ b/Makefile @@ -1,9 +1,9 @@ CFLAGS=-g -O3 -Wall CC=gcc -PROG= update-cache show-diff init-db write-tree read-tree commit-tree \ +PROG= update-cache show-diff init-db write-tree read-tree commit-tree \ cat-file fsck-cache checkout-cache diff-tree rev-tree show-files \ - check-files + check-files ls-tree all: $(PROG) @@ -50,6 +50,9 @@ show-files: show-files.o read-cache.o check-files: check-files.o read-cache.o $(CC) $(CFLAGS) -o check-files check-files.o read-cache.o $(LIBS) +ls-tree: ls-tree.o read-cache.o + $(CC) $(CFLAGS) -o ls-tree ls-tree.o read-cache.o $(LIBS) + read-cache.o: cache.h show-diff.o: cache.h diff --git a/ls-tree.c b/ls-tree.c new file mode 100644 index 000000000..05c743ab6 --- /dev/null +++ b/ls-tree.c @@ -0,0 +1,53 @@ +/* + * GIT - The information manager from hell + * + * Copyright (C) Linus Torvalds, 2005 + */ +#include "cache.h" + +static int list(unsigned char *sha1) +{ + void *buffer; + unsigned long size; + char type[20]; + + buffer = read_sha1_file(sha1, type, &size); + if (!buffer) + usage("unable to read sha1 file"); + if (strcmp(type, "tree")) + usage("expected a 'tree' node"); + while (size) { + int len = strlen(buffer)+1; + unsigned char *sha1 = buffer + len; + char *path = strchr(buffer, ' ')+1; + unsigned int mode; + unsigned char *type; + + if (size < len + 20 || sscanf(buffer, "%o", &mode) != 1) + usage("corrupt 'tree' file"); + buffer = sha1 + 20; + size -= len + 20; + /* XXX: We do some ugly mode heuristics here. + * It seems not worth it to read each file just to get this + * and the file size. -- pasky@ucw.cz */ + type = S_ISDIR(mode) ? "tree" : "blob"; + printf("%03o\t%s\t%s\t%s\n", mode, type, sha1_to_hex(sha1), path); + } + return 0; +} + +int main(int argc, char **argv) +{ + unsigned char sha1[20]; + + if (argc != 2) + usage("ls-tree "); + if (get_sha1_hex(argv[1], sha1) < 0) + usage("ls-tree "); + sha1_file_directory = getenv(DB_ENVIRONMENT); + if (!sha1_file_directory) + sha1_file_directory = DEFAULT_DB_ENVIRONMENT; + if (list(sha1) < 0) + usage("list failed"); + return 0; +} -- 2.30.2