66 lines
1 KiB
C
66 lines
1 KiB
C
#include <u.h>
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#include <libc.h>
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#include <bio.h>
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#include <regexp.h>
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#include "hash.h"
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Hash hash;
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void
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usage(void)
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{
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fprint(2, "addhash [-o out] file scale [file scale]...\n");
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exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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int i, fd, n;
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char err[ERRMAX], *out;
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Biobuf *b, bout;
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out = nil;
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ARGBEGIN{
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case 'o':
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out = EARGF(usage());
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break;
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default:
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usage();
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}ARGEND;
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if(argc==0 || argc%2)
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usage();
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while(argc > 0){
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if((b = Bopenlock(argv[0], OREAD)) == nil)
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sysfatal("open %s: %r", argv[0]);
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n = atoi(argv[1]);
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if(n == 0)
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sysfatal("0 scale given");
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Breadhash(b, &hash, n);
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Bterm(b);
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argv += 2;
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argc -= 2;
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}
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fd = 1;
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if(out){
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for(i=0; i<120; i++){
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if((fd = create(out, OWRITE, 0666|DMEXCL)) >= 0)
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break;
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rerrstr(err, sizeof err);
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if(strstr(err, "file is locked")==nil && strstr(err, "exclusive lock")==nil)
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break;
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sleep(1000);
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}
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if(fd < 0)
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sysfatal("could not open %s: %r\n", out);
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}
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Binit(&bout, fd, OWRITE);
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Bwritehash(&bout, &hash);
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Bterm(&bout);
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exits(0);
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}
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