This is more or less for fun. Does anyone really want to create archives
from index?
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
archive.c | 38 +++++++++++++++++++++++++-------------
archive.h | 1 +
2 files changed, 26 insertions(+), 13 deletions(-)
diff --git a/archive.c b/archive.c
index 1ce644e..bb0a0f1 100644
--- a/archive.c
+++ b/archive.c
@@ -181,7 +181,7 @@ int write_archive_entries(struct archiver_args *args,
len--;
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)len, args->base);
- err = write_entry(args, args->tree->object.sha1, args->base,
+ err = write_entry(args, args->tree ? args->tree->object.sha1 : null_sha1, args->base,
len, 040777, NULL, 0);
if (err)
return err;
@@ -190,15 +190,19 @@ int write_archive_entries(struct archiver_args *args,
context.args = args;
context.write_entry = write_entry;
- memset(&opts, 0, sizeof(opts));
- opts.index_only = 1;
- opts.head_idx = -1;
- opts.src_index = &the_index;
- opts.dst_index = &the_index;
- opts.fn = oneway_merge;
- init_tree_desc(&t, args->tree->buffer, args->tree->size);
- if (unpack_trees(1, &t, &opts))
- return -1;
+ if (args->tree) {
+ memset(&opts, 0, sizeof(opts));
+ opts.index_only = 1;
+ opts.head_idx = -1;
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+ opts.fn = oneway_merge;
+ init_tree_desc(&t, args->tree->buffer, args->tree->size);
+ if (unpack_trees(1, &t, &opts))
+ return -1;
+ }
+ else
+ read_cache();
prefix_len = common_prefix(args->pathspec);
if (prefix_len)
prune_cache(args->pathspec[0], prefix_len);
@@ -300,6 +304,7 @@ static int parse_archive_args(int argc, const char **argv,
int verbose = 0;
int i;
int list = 0;
+ int use_index = 0;
struct option opts[] = {
OPT_GROUP(""),
OPT_STRING('f', "format", &format, "fmt", "archive format"),
@@ -307,6 +312,8 @@ static int parse_archive_args(int argc, const char **argv,
"prepend prefix to each pathname in the archive"),
OPT_STRING(0, "output", &output, "file",
"write the archive to this file"),
+ OPT_BOOLEAN('i', "index", &use_index,
+ "generate from index instead"),
OPT__VERBOSE(&verbose),
OPT__COMPR('0', &compression_level, "store only", 0),
OPT__COMPR('1', &compression_level, "compress faster", 1),
@@ -348,7 +355,7 @@ static int parse_archive_args(int argc, const char **argv,
}
/* We need at least one parameter -- tree-ish */
- if (argc < 1)
+ if (argc < 1 && !use_index)
usage_with_options(archive_usage, opts);
*ar = lookup_archiver(format);
if (!*ar)
@@ -366,6 +373,7 @@ static int parse_archive_args(int argc, const char **argv,
args->verbose = verbose;
args->base = base;
args->baselen = strlen(base);
+ args->use_index = use_index;
return argc;
}
@@ -376,12 +384,16 @@ int write_archive(int argc, const char **argv, const char *prefix,
const struct archiver *ar = NULL;
struct archiver_args args;
+ memset(&args, 0, sizeof(args));
argc = parse_archive_args(argc, argv, &ar, &args);
if (setup_prefix && prefix == NULL)
prefix = setup_git_directory();
- parse_treeish_arg(argv, &args, prefix);
- parse_pathspec_arg(argv + 1, &args, prefix);
+ if (!args.use_index) {
+ parse_treeish_arg(argv, &args, prefix);
+ argv++;
+ }
+ parse_pathspec_arg(argv, &args, prefix);
git_config(git_default_config, NULL);
diff --git a/archive.h b/archive.h
index 0b15b35..fb94d47 100644
--- a/archive.h
+++ b/archive.h
@@ -10,6 +10,7 @@ struct archiver_args {
time_t time;
const char **pathspec;
unsigned int verbose : 1;
+ unsigned int use_index : 1;
int compression_level;
};
--
1.6.2.2.602.g83ee9f
--
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