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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>
42 lines
841 B
C
42 lines
841 B
C
#include "cache.h"
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#include "blob.h"
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#include "exec_cmd.h"
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static char *create_temp_file(unsigned char *sha1)
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{
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static char path[50];
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void *buf;
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enum object_type type;
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unsigned long size;
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int fd;
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buf = read_sha1_file(sha1, &type, &size);
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if (!buf || type != OBJ_BLOB)
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die("unable to read blob object %s", sha1_to_hex(sha1));
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strcpy(path, ".merge_file_XXXXXX");
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fd = xmkstemp(path);
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if (write_in_full(fd, buf, size) != size)
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die_errno("unable to write temp-file");
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close(fd);
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return path;
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}
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int main(int argc, char **argv)
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{
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unsigned char sha1[20];
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git_extract_argv0_path(argv[0]);
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if (argc != 2)
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usage("git unpack-file <sha1>");
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if (get_sha1(argv[1], sha1))
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die("Not a valid object name %s", argv[1]);
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setup_git_directory();
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git_config(git_default_config, NULL);
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puts(create_temp_file(sha1));
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return 0;
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}
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