3 typedef struct _Buffer {
8 #define INIT_BUFFER_SIZE 10000
13 b->room = INIT_BUFFER_SIZE;
15 b->buff = (char *)malloc(INIT_BUFFER_SIZE*sizeof(char));
18 void AppendToBuffer(b, str, len)
23 while (b->used + len > b->room) {
24 b->buff = (char *)realloc(b->buff, 2*b->room*(sizeof(char)));
27 strncpy(b->buff + b->used, str, len);
31 void ReadFile(buffer, input)
32 register Buffer *buffer;
39 while (!feof(input) && (bytes = fread(buf, 1, BUFSIZ, input)) > 0) {
40 AppendToBuffer(buffer, buf, bytes);
42 AppendToBuffer(buffer, "", 1);
47 char * filename = "xbug.c";
53 if (!freopen (filename, "r", stdin))
54 fprintf(stderr, "cannot open file\n");
56 if (!(input = popen("/bin/cat", "r")))
57 fprintf(stderr, "cannot run \n");
59 ReadFile(&buffer, input);