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3c249c9506
This allows the programs to use various simplified versions of the SHA1 names, eg just say "HEAD" for the SHA1 pointed to by the .git/HEAD file etc. For example, this commit has been done with git-commit-tree $(git-write-tree) -p HEAD instead of the traditional "$(cat .git/HEAD)" syntax.
34 lines
682 B
C
34 lines
682 B
C
#include "cache.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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char type[100];
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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 || strcmp(type, "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 = mkstemp(path);
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if (fd < 0)
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die("unable to create temp-file");
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if (write(fd, buf, size) != size)
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die("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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if (argc != 2 || get_sha1(argv[1], sha1))
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usage("unpack-file.c <sha1>");
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puts(create_temp_file(sha1));
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return 0;
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}
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