48 static int fmemopen_read(void* cookie, char* buf, int n) {  in fmemopen_read()  argument
51   if (static_cast<size_t>(n) > ck->size - ck->offset) n = ck->size - ck->offset;  in fmemopen_read()
53   if (n > 0) {  in fmemopen_read()
54     memmove(buf, ck->buf + ck->offset, n);  in fmemopen_read()
55     ck->offset += n;  in fmemopen_read()
57   return n;  in fmemopen_read()
60 static int fmemopen_write(void* cookie, const char* buf, int n) {  in fmemopen_write()  argument
65   size_t space_for_null = (n > 0 && buf[n - 1] != '\0') ? 1 : 0;  in fmemopen_write()
71   if (static_cast<size_t>(n) + space_for_null > ck->capacity - ck->offset) {  in fmemopen_write()
72     n = ck->capacity - ck->offset - space_for_null;  in fmemopen_write()
74     if (n <= 0) {  in fmemopen_write()
80   if (n > 0) {  in fmemopen_write()
81     memmove(ck->buf + ck->offset, buf, n);  in fmemopen_write()
82     ck->offset += n;  in fmemopen_write()
85       if (buf[n - 1] != '\0') ck->buf[ck->offset] = '\0';  in fmemopen_write()
89   return n;  in fmemopen_write()