83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
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#include "trace.h"
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static void trace_entry_free(trace_entry_t *te) {
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g_slice_free1(te->count*12 + 8, te);
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}
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static void _trace_entry_free(gpointer p, gpointer x) {
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UNUSED(x);
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trace_entry_free(p);
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}
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static trace_entry_t *trace_entry_new(guint32 timestamp, guint32 count) {
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trace_entry_t *te = g_slice_alloc(count*12 + 8);
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te->timestamp = timestamp;
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te->count = count;
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return te;
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}
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trace_t *trace_load(const gchar *filename) {
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GError *err = NULL;
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guint32 *buf = NULL;
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gsize len = 0, i;
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trace_t *trace = g_slice_new0(trace_t);
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trace->data = g_ptr_array_new();
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if (!g_file_get_contents(filename, (gchar**) &buf, &len, &err)) {
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fprintf (stderr, "Unable to read file %s: %s\n", filename, err->message);
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g_error_free (err);
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exit(1);
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}
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if (len % 4 > 0) {
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fprintf (stderr, "Solution: length not aligned\n");
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exit(10);
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}
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len /= 4;
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if (len < 10) {
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fprintf (stderr, "Solution too short\n");
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exit(10);
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}
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if (buf[0] != 0xCAFEBABE) {
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fprintf (stderr, "Wrong magic in solution: 0x%X\n", (guint) buf[0]);
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exit(10);
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}
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trace->magic = buf[0];
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trace->team = buf[1];
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trace->scenario = buf[2];
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for (i = 3; i < len; ) {
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guint32 timestamp, count;
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trace_entry_t *te;
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if (i+1 >= len) {
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fprintf(stderr, "Solution: unexpected end of file (%i+1 >= %i)\n", (guint) i, (guint) len);
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exit(10);
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}
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timestamp = buf[i++];
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count = buf[i++];
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if (i+count*3 > len) {
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fprintf(stderr, "Solution: unexpected end of file (%i+%i*3 >= %i\n", (guint) i, (guint) count, (guint) len);
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exit(10);
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}
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te = trace_entry_new(timestamp, count);
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if (count > 0) memcpy(te->data, &buf[i], count * 12);
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i += 3*count;
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g_ptr_array_add(trace->data, te);
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if (count == 0 && i < len) {
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fprintf (stderr, "Solution: expected end of file (count = 0)\n");
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}
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}
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return trace;
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}
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void trace_free(trace_t *trace) {
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g_ptr_array_foreach(trace->data, _trace_entry_free, NULL);
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}
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