Robert Schmidt
ed89498c4f
Fix clang warning warning: use of GNU old-style field designator extension [-Wgnu-designator]
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "utils.h"
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#include "../T_defs.h"
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void usage(void)
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{
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printf(
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"options:\n"
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" -i <input file> this option is mandatory\n"
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);
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exit(1);
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}
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#define ERR printf("ERROR: read file %s failed\n", input_filename)
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int main(int n, char **v)
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{
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char *input_filename = NULL;
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int i;
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FILE *in;
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for (i = 1; i < n; i++) {
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if (!strcmp(v[i], "-h") || !strcmp(v[i], "--help")) usage();
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if (!strcmp(v[i], "-i"))
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{ if (i > n-2) usage(); input_filename = v[++i]; continue; }
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usage();
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}
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if (input_filename == NULL) {
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printf("ERROR: provide an input file (-i)\n");
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exit(1);
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}
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in = fopen(input_filename, "r");
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if (in == NULL) { perror(input_filename); abort(); }
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OBUF ebuf = {.osize = 0, .omaxsize = 0, .obuf = NULL};
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while (1) {
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int type;
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int32_t length;
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char *v;
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int vpos = 0;
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/* read event from file */
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if (fread(&length, 4, 1, in) != 1) break;
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if (ebuf.omaxsize < length) {
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ebuf.omaxsize = (length + 65535) & ~65535;
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ebuf.obuf = realloc(ebuf.obuf, ebuf.omaxsize);
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if (ebuf.obuf == NULL) { printf("out of memory\n"); exit(1); }
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}
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v = ebuf.obuf;
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memcpy(v+vpos, &length, 4);
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vpos += 4;
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#ifdef T_SEND_TIME
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if (length < sizeof(struct timespec)) { ERR; break; }
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if (fread(v+vpos, sizeof(struct timespec), 1, in) != 1) { ERR; break; }
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vpos += sizeof(struct timespec);
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length -= sizeof(struct timespec);
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#endif
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if (length < sizeof(int)) { ERR; break; }
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if (fread(&type, sizeof(int), 1, in) != 1) { ERR; break; }
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memcpy(v+vpos, &type, sizeof(int));
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vpos += sizeof(int);
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length -= sizeof(int);
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if (length) if (fread(v+vpos, length, 1, in) != 1) { ERR; break; }
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vpos += length;
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if (type == -1) {
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if (length < sizeof(int)) { ERR; break; }
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length -= sizeof(int);
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if (fwrite(v+vpos-length, length, 1, stdout) != 1) { ERR; break; }
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}
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/* TODO: parse all file? */
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if (type == -2) break;
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}
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fclose(in);
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return 0;
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}
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