diff options
| -rw-r--r-- | Documentation/git-hash-object.txt | 20 | ||||
| -rw-r--r-- | cache.h | 1 | ||||
| -rw-r--r-- | hash-object.c | 159 | ||||
| -rw-r--r-- | sha1_file.c | 64 | ||||
| -rwxr-xr-x | t/t1007-hash-object.sh | 56 |
5 files changed, 178 insertions, 122 deletions
diff --git a/Documentation/git-hash-object.txt b/Documentation/git-hash-object.txt index ac928e198e..0af40cfb85 100644 --- a/Documentation/git-hash-object.txt +++ b/Documentation/git-hash-object.txt @@ -8,7 +8,9 @@ git-hash-object - Compute object ID and optionally creates a blob from a file SYNOPSIS -------- -'git hash-object' [-t <type>] [-w] [--stdin | --stdin-paths] [--] <file>... +[verse] +'git hash-object' [-t <type>] [-w] [--path=<file>|--no-filters] [--stdin] [--] <file>... +'git hash-object' [-t <type>] [-w] --stdin-paths < <list-of-paths> DESCRIPTION ----------- @@ -35,6 +37,22 @@ OPTIONS --stdin-paths:: Read file names from stdin instead of from the command-line. +--path:: + Hash object as it were located at the given path. The location of + file does not directly influence on the hash value, but path is + used to determine what git filters should be applied to the object + before it can be placed to the object database, and, as result of + applying filters, the actual blob put into the object database may + differ from the given file. This option is mainly useful for hashing + temporary files located outside of the working directory or files + read from stdin. + +--no-filters:: + Hash the contents as is, ignoring any input filter that would + have been chosen by the attributes mechanism, including crlf + conversion. If the file is read from standard input then this + is always implied, unless the --path option is given. + Author ------ Written by Junio C Hamano <gitster@pobox.com> @@ -391,7 +391,6 @@ extern int ie_modified(const struct index_state *, struct cache_entry *, struct extern int ce_path_match(const struct cache_entry *ce, const char **pathspec); extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path); -extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object); extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object); extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); diff --git a/hash-object.c b/hash-object.c index 46c06a9552..a4d127cf78 100644 --- a/hash-object.c +++ b/hash-object.c @@ -7,16 +7,14 @@ #include "cache.h" #include "blob.h" #include "quote.h" +#include "parse-options.h" -static void hash_object(const char *path, enum object_type type, int write_object) +static void hash_fd(int fd, const char *type, int write_object, const char *path) { - int fd; struct stat st; unsigned char sha1[20]; - fd = open(path, O_RDONLY); - if (fd < 0 || - fstat(fd, &st) < 0 || - index_fd(sha1, fd, &st, write_object, type, path)) + if (fstat(fd, &st) < 0 || + index_fd(sha1, fd, &st, write_object, type_from_string(type), path)) die(write_object ? "Unable to add %s to database" : "Unable to hash %s", path); @@ -24,12 +22,14 @@ static void hash_object(const char *path, enum object_type type, int write_objec maybe_flush_or_die(stdout, "hash to stdout"); } -static void hash_stdin(const char *type, int write_object) +static void hash_object(const char *path, const char *type, int write_object, + const char *vpath) { - unsigned char sha1[20]; - if (index_pipe(sha1, 0, type, write_object)) - die("Unable to add stdin to database"); - printf("%s\n", sha1_to_hex(sha1)); + int fd; + fd = open(path, O_RDONLY); + if (fd < 0) + die("Cannot open %s", path); + hash_fd(fd, type, write_object, vpath); } static void hash_stdin_paths(const char *type, int write_objects) @@ -45,92 +45,91 @@ static void hash_stdin_paths(const char *type, int write_objects) die("line is badly quoted"); strbuf_swap(&buf, &nbuf); } - hash_object(buf.buf, type_from_string(type), write_objects); + hash_object(buf.buf, type, write_objects, buf.buf); } strbuf_release(&buf); strbuf_release(&nbuf); } -static const char hash_object_usage[] = -"git hash-object [ [-t <type>] [-w] [--stdin] <file>... | --stdin-paths < <list-of-paths> ]"; +static const char * const hash_object_usage[] = { + "git hash-object [-t <type>] [-w] [--path=<file>|--no-filters] [--stdin] [--] <file>...", + "git hash-object --stdin-paths < <list-of-paths>", + NULL +}; -int main(int argc, char **argv) +static const char *type; +static int write_object; +static int hashstdin; +static int stdin_paths; +static int no_filters; +static const char *vpath; + +static const struct option hash_object_options[] = { + OPT_STRING('t', NULL, &type, "type", "object type"), + OPT_BOOLEAN('w', NULL, &write_object, "write the object into the object database"), + OPT_BOOLEAN( 0 , "stdin", &hashstdin, "read the object from stdin"), + OPT_BOOLEAN( 0 , "stdin-paths", &stdin_paths, "read file names from stdin"), + OPT_BOOLEAN( 0 , "no-filters", &no_filters, "store file as is without filters"), + OPT_STRING( 0 , "path", &vpath, "file", "process file as it were from this path"), + OPT_END() +}; + +int main(int argc, const char **argv) { int i; - const char *type = blob_type; - int write_object = 0; const char *prefix = NULL; int prefix_length = -1; - int no_more_flags = 0; - int hashstdin = 0; - int stdin_paths = 0; + const char *errstr = NULL; + + type = blob_type; git_config(git_default_config, NULL); - for (i = 1 ; i < argc; i++) { - if (!no_more_flags && argv[i][0] == '-') { - if (!strcmp(argv[i], "-t")) { - if (argc <= ++i) - usage(hash_object_usage); - type = argv[i]; - } - else if (!strcmp(argv[i], "-w")) { - if (prefix_length < 0) { - prefix = setup_git_directory(); - prefix_length = - prefix ? strlen(prefix) : 0; - } - write_object = 1; - } - else if (!strcmp(argv[i], "--")) { - no_more_flags = 1; - } - else if (!strcmp(argv[i], "--help")) - usage(hash_object_usage); - else if (!strcmp(argv[i], "--stdin-paths")) { - if (hashstdin) { - error("Can't use --stdin-paths with --stdin"); - usage(hash_object_usage); - } - stdin_paths = 1; - - } - else if (!strcmp(argv[i], "--stdin")) { - if (stdin_paths) { - error("Can't use %s with --stdin-paths", argv[i]); - usage(hash_object_usage); - } - if (hashstdin) - die("Multiple --stdin arguments are not supported"); - hashstdin = 1; - } - else - usage(hash_object_usage); - } - else { - const char *arg = argv[i]; - - if (stdin_paths) { - error("Can't specify files (such as \"%s\") with --stdin-paths", arg); - usage(hash_object_usage); - } - - if (hashstdin) { - hash_stdin(type, write_object); - hashstdin = 0; - } - if (0 <= prefix_length) - arg = prefix_filename(prefix, prefix_length, - arg); - hash_object(arg, type_from_string(type), write_object); - no_more_flags = 1; - } + argc = parse_options(argc, argv, hash_object_options, hash_object_usage, 0); + + if (write_object) { + prefix = setup_git_directory(); + prefix_length = prefix ? strlen(prefix) : 0; + if (vpath && prefix) + vpath = prefix_filename(prefix, prefix_length, vpath); + } + + if (stdin_paths) { + if (hashstdin) + errstr = "Can't use --stdin-paths with --stdin"; + else if (argc) + errstr = "Can't specify files with --stdin-paths"; + else if (vpath) + errstr = "Can't use --stdin-paths with --path"; + else if (no_filters) + errstr = "Can't use --stdin-paths with --no-filters"; + } + else { + if (hashstdin > 1) + errstr = "Multiple --stdin arguments are not supported"; + if (vpath && no_filters) + errstr = "Can't use --path with --no-filters"; + } + + if (errstr) { + error (errstr); + usage_with_options(hash_object_usage, hash_object_options); + } + + if (hashstdin) + hash_fd(0, type, write_object, vpath); + + for (i = 0 ; i < argc; i++) { + const char *arg = argv[i]; + + if (0 <= prefix_length) + arg = prefix_filename(prefix, prefix_length, arg); + hash_object(arg, type, write_object, + no_filters ? NULL : vpath ? vpath : arg); } if (stdin_paths) hash_stdin_paths(type, write_object); - if (hashstdin) - hash_stdin(type, write_object); return 0; } diff --git a/sha1_file.c b/sha1_file.c index 32e4664b1b..2aff59b90f 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -2360,51 +2360,22 @@ int has_sha1_file(const unsigned char *sha1) return has_loose_object(sha1); } -int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object) +static int index_mem(unsigned char *sha1, void *buf, size_t size, + int write_object, enum object_type type, const char *path) { - struct strbuf buf; - int ret; - - strbuf_init(&buf, 0); - if (strbuf_read(&buf, fd, 4096) < 0) { - strbuf_release(&buf); - return -1; - } - - if (!type) - type = blob_type; - if (write_object) - ret = write_sha1_file(buf.buf, buf.len, type, sha1); - else - ret = hash_sha1_file(buf.buf, buf.len, type, sha1); - strbuf_release(&buf); - - return ret; -} - -int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, - enum object_type type, const char *path) -{ - size_t size = xsize_t(st->st_size); - void *buf = NULL; int ret, re_allocated = 0; - if (size) - buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0); - close(fd); - if (!type) type = OBJ_BLOB; /* * Convert blobs to git internal format */ - if ((type == OBJ_BLOB) && S_ISREG(st->st_mode)) { + if ((type == OBJ_BLOB) && path) { struct strbuf nbuf; strbuf_init(&nbuf, 0); if (convert_to_git(path, buf, size, &nbuf, write_object ? safe_crlf : 0)) { - munmap(buf, size); buf = strbuf_detach(&nbuf, &size); re_allocated = 1; } @@ -2414,12 +2385,33 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, ret = write_sha1_file(buf, size, typename(type), sha1); else ret = hash_sha1_file(buf, size, typename(type), sha1); - if (re_allocated) { + if (re_allocated) free(buf); - return ret; - } - if (size) + return ret; +} + +int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, + enum object_type type, const char *path) +{ + int ret; + size_t size = xsize_t(st->st_size); + + if (!S_ISREG(st->st_mode)) { + struct strbuf sbuf; + strbuf_init(&sbuf, 0); + if (strbuf_read(&sbuf, fd, 4096) >= 0) + ret = index_mem(sha1, sbuf.buf, sbuf.len, write_object, + type, path); + else + ret = -1; + strbuf_release(&sbuf); + } else if (size) { + void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0); + ret = index_mem(sha1, buf, size, write_object, type, path); munmap(buf, size); + } else + ret = index_mem(sha1, NULL, size, write_object, type, path); + close(fd); return ret; } diff --git a/t/t1007-hash-object.sh b/t/t1007-hash-object.sh index 1ec0535138..fcdd15a358 100755 --- a/t/t1007-hash-object.sh +++ b/t/t1007-hash-object.sh @@ -49,16 +49,28 @@ setup_repo # Argument checking test_expect_success "multiple '--stdin's are rejected" ' - test_must_fail git hash-object --stdin --stdin < example + echo example | test_must_fail git hash-object --stdin --stdin ' test_expect_success "Can't use --stdin and --stdin-paths together" ' - test_must_fail git hash-object --stdin --stdin-paths && - test_must_fail git hash-object --stdin-paths --stdin + echo example | test_must_fail git hash-object --stdin --stdin-paths && + echo example | test_must_fail git hash-object --stdin-paths --stdin ' test_expect_success "Can't pass filenames as arguments with --stdin-paths" ' - test_must_fail git hash-object --stdin-paths hello < example + echo example | test_must_fail git hash-object --stdin-paths hello +' + +test_expect_success "Can't use --path with --stdin-paths" ' + echo example | test_must_fail git hash-object --stdin-paths --path=foo +' + +test_expect_success "Can't use --stdin-paths with --no-filters" ' + echo example | test_must_fail git hash-object --stdin-paths --no-filters +' + +test_expect_success "Can't use --path with --no-filters" ' + test_must_fail git hash-object --no-filters --path=foo ' # Behavior @@ -93,6 +105,42 @@ test_expect_success 'git hash-object --stdin file1 <file0 first operates on file test "$obname1" = "$obname1new" ' +test_expect_success 'check that appropriate filter is invoke when --path is used' ' + echo fooQ | tr Q "\\015" >file0 && + cp file0 file1 && + echo "file0 -crlf" >.gitattributes && + echo "file1 crlf" >>.gitattributes && + git config core.autocrlf true && + file0_sha=$(git hash-object file0) && + file1_sha=$(git hash-object file1) && + test "$file0_sha" != "$file1_sha" && + path1_sha=$(git hash-object --path=file1 file0) && + path0_sha=$(git hash-object --path=file0 file1) && + test "$file0_sha" = "$path0_sha" && + test "$file1_sha" = "$path1_sha" && + path1_sha=$(cat file0 | git hash-object --path=file1 --stdin) && + path0_sha=$(cat file1 | git hash-object --path=file0 --stdin) && + test "$file0_sha" = "$path0_sha" && + test "$file1_sha" = "$path1_sha" && + git config --unset core.autocrlf +' + +test_expect_success 'check that --no-filters option works' ' + echo fooQ | tr Q "\\015" >file0 && + cp file0 file1 && + echo "file0 -crlf" >.gitattributes && + echo "file1 crlf" >>.gitattributes && + git config core.autocrlf true && + file0_sha=$(git hash-object file0) && + file1_sha=$(git hash-object file1) && + test "$file0_sha" != "$file1_sha" && + nofilters_file1=$(git hash-object --no-filters file1) && + test "$file0_sha" = "$nofilters_file1" && + nofilters_file1=$(cat file1 | git hash-object --stdin) && + test "$file0_sha" = "$nofilters_file1" && + git config --unset core.autocrlf +' + pop_repo for args in "-w --stdin" "--stdin -w"; do |