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0721c314a5
Lots of die() calls did not actually report the kind of error, which can leave the user confused as to the real problem. Use die_errno() where we check a system/library call that sets errno on failure, or one of the following that wrap such calls: Function Passes on error from -------- -------------------- odb_pack_keep open read_ancestry fopen read_in_full xread strbuf_read xread strbuf_read_file open or strbuf_read_file strbuf_readlink readlink write_in_full xwrite Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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* Copyright (C) Junio C Hamano, 2005
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*/
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#include "cache.h"
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#include "blob.h"
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#include "quote.h"
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#include "parse-options.h"
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#include "exec_cmd.h"
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static void hash_fd(int fd, const char *type, int write_object, const char *path)
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{
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struct stat st;
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unsigned char sha1[20];
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if (fstat(fd, &st) < 0 ||
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index_fd(sha1, fd, &st, write_object, type_from_string(type), path))
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die(write_object
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? "Unable to add %s to database"
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: "Unable to hash %s", path);
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printf("%s\n", sha1_to_hex(sha1));
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maybe_flush_or_die(stdout, "hash to stdout");
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}
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static void hash_object(const char *path, const char *type, int write_object,
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const char *vpath)
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{
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int fd;
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fd = open(path, O_RDONLY);
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if (fd < 0)
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die_errno("Cannot open '%s'", path);
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hash_fd(fd, type, write_object, vpath);
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}
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static void hash_stdin_paths(const char *type, int write_objects)
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{
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struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
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while (strbuf_getline(&buf, stdin, '\n') != EOF) {
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if (buf.buf[0] == '"') {
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strbuf_reset(&nbuf);
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if (unquote_c_style(&nbuf, buf.buf, NULL))
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die("line is badly quoted");
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strbuf_swap(&buf, &nbuf);
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}
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hash_object(buf.buf, type, write_objects, buf.buf);
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}
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strbuf_release(&buf);
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strbuf_release(&nbuf);
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}
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static const char * const hash_object_usage[] = {
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"git hash-object [-t <type>] [-w] [--path=<file>|--no-filters] [--stdin] [--] <file>...",
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"git hash-object --stdin-paths < <list-of-paths>",
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NULL
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};
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static const char *type;
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static int write_object;
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static int hashstdin;
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static int stdin_paths;
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static int no_filters;
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static const char *vpath;
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static const struct option hash_object_options[] = {
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OPT_STRING('t', NULL, &type, "type", "object type"),
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OPT_BOOLEAN('w', NULL, &write_object, "write the object into the object database"),
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OPT_BOOLEAN( 0 , "stdin", &hashstdin, "read the object from stdin"),
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OPT_BOOLEAN( 0 , "stdin-paths", &stdin_paths, "read file names from stdin"),
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OPT_BOOLEAN( 0 , "no-filters", &no_filters, "store file as is without filters"),
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OPT_STRING( 0 , "path", &vpath, "file", "process file as it were from this path"),
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OPT_END()
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};
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int main(int argc, const char **argv)
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{
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int i;
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const char *prefix = NULL;
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int prefix_length = -1;
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const char *errstr = NULL;
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type = blob_type;
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git_extract_argv0_path(argv[0]);
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argc = parse_options(argc, argv, NULL, hash_object_options,
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hash_object_usage, 0);
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if (write_object) {
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prefix = setup_git_directory();
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prefix_length = prefix ? strlen(prefix) : 0;
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if (vpath && prefix)
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vpath = prefix_filename(prefix, prefix_length, vpath);
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}
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git_config(git_default_config, NULL);
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if (stdin_paths) {
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if (hashstdin)
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errstr = "Can't use --stdin-paths with --stdin";
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else if (argc)
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errstr = "Can't specify files with --stdin-paths";
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else if (vpath)
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errstr = "Can't use --stdin-paths with --path";
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else if (no_filters)
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errstr = "Can't use --stdin-paths with --no-filters";
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}
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else {
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if (hashstdin > 1)
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errstr = "Multiple --stdin arguments are not supported";
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if (vpath && no_filters)
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errstr = "Can't use --path with --no-filters";
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}
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if (errstr) {
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error("%s", errstr);
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usage_with_options(hash_object_usage, hash_object_options);
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}
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if (hashstdin)
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hash_fd(0, type, write_object, vpath);
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for (i = 0 ; i < argc; i++) {
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const char *arg = argv[i];
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if (0 <= prefix_length)
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arg = prefix_filename(prefix, prefix_length, arg);
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hash_object(arg, type, write_object,
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no_filters ? NULL : vpath ? vpath : arg);
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}
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if (stdin_paths)
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hash_stdin_paths(type, write_object);
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return 0;
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}
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