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comparison ueda/libuschem/graphblocks.c @ 0:cd92449fdb51

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initial import of ueda and ifctf-part-lib from ifctfvax CVS
author Space Falcon <falcon@ivan.Harhan.ORG>
date Mon, 20 Jul 2015 00:24:37 +0000
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-1:000000000000 0:cd92449fdb51
1 /*
2 * utility functions for working with graphical blocks
3 */
4
5 #include <sys/param.h>
6 #include <stdio.h>
7 #include "schemstruct.h"
8
9 FILE *
10 reopen_schem_for_graphblocks(schem)
11 struct schem *schem;
12 {
13 register FILE *f;
14
15 if (!schem->has_graphblocks)
16 return(NULL);
17 f = fopen(schem->orig_filename, "r");
18 if (!f) {
19 fprintf(stderr, "Unable to reopen %s for graphblocks: ",
20 schem->orig_filename);
21 perror(NULL);
22 exit(1);
23 }
24 return(f);
25 }
26
27 write_graphblock_to_file(blk, inf, outf)
28 struct graphblock *blk;
29 register FILE *inf, *outf;
30 {
31 char buf[512];
32 register int cc, rem;
33
34 fseek(inf, blk->offset, 0);
35 for (rem = blk->length; rem; rem -= cc) {
36 cc = MIN(rem, sizeof buf);
37 fread(buf, 1, cc, inf);
38 fwrite(buf, 1, cc, outf);
39 }
40 }