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Error check when writing to temporaries

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This commit is contained in:
Eric Fischer 2014-09-17 16:21:25 -07:00
parent 57fe46f423
commit 14e7b648ed
1 changed files with 13 additions and 4 deletions
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17
geojson.c
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@ -139,13 +139,22 @@ int indexcmp(const void *v1, const void *v2) {
}
}
size_t fwrite_check(const void *ptr, size_t size, size_t nitems, FILE *stream) {
size_t w = fwrite(ptr, size, nitems, stream);
if (w != nitems) {
fprintf(stderr, "Write failed\n");
exit(EXIT_FAILURE);
}
return w;
}
void serialize_int(FILE *out, int n, long long *fpos) {
fwrite(&n, sizeof(int), 1, out);
fwrite_check(&n, sizeof(int), 1, out);
*fpos += sizeof(int);
}
void serialize_uint(FILE *out, unsigned n, long long *fpos) {
fwrite(&n, sizeof(unsigned), 1, out);
fwrite_check(&n, sizeof(unsigned), 1, out);
*fpos += sizeof(unsigned);
}
@ -153,7 +162,7 @@ void serialize_string(FILE *out, char *s, long long *fpos) {
int len = strlen(s);
serialize_int(out, len, fpos);
fwrite(s, sizeof(char), len, out);
fwrite_check(s, sizeof(char), len, out);
*fpos += len;
}
@ -384,7 +393,7 @@ void read_json(FILE *f) {
struct index ix;
ix.index = encode_bbox(bbox[0], bbox[1], bbox[2], bbox[3], 0);
ix.fpos = start;
fwrite(&ix, sizeof(struct index), 1, indexfile);
fwrite_check(&ix, sizeof(struct index), 1, indexfile);
}
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