openwrt/package/webif/src/bstrip.c

   1 #include <stdio.h>
   2
   3 #define BUF_SIZE 1024
   4 #define READ_LEN 14
   5
   6 static int read_len = READ_LEN;
   7 static char rbuf[32];
   8 static char rbuflen = 0;
   9
  10 int do_gets(char *buf)
  11 {
  12         int r = 0, c = 0;
  13         char *m;
  14
  15         if (rbuflen > 0)
  16                 memcpy(buf, rbuf, rbuflen);
  17         c += rbuflen;
  18
  19         while ((c + read_len < BUF_SIZE) && ((r = read(0, &buf[c], read_len)) > 0)) {
  20                 m = NULL;
  21
  22                 if ((m = memchr(&buf[c], '\n', r)) != NULL) {
  23                         rbuflen = r - (m - &buf[c] + 1);
  24                         if (rbuflen > 0)
  25                                 memcpy(rbuf, m + 1, rbuflen);
  26                         c += m - &buf[c] + 1;
  27                 } else {
  28                         rbuflen = 0;
  29                         c += r;
  30                 }
  31
  32                 if ((c > 3) && (memcmp(&buf[c - 3], "---", 3) == 0))
  33                         read_len = 1;
  34
  35                 if (m != NULL)
  36                         return c;
  37         }
  38
  39         return c;
  40 }
  41
  42 int main(int argc, char **argv)
  43 {
  44         char buf[BUF_SIZE];
  45         char buf1[BUF_SIZE];
  46         char *tmp;
  47         int len, r = 0, r1 = 0;
  48
  49         if (argc != 2) {
  50                 fprintf(stderr, "Syntax: %s (name|data <boundary>)\n", argv[0]);
  51                 exit(1);
  52         }
  53         while (tmp = strchr(argv[1], '\r'))
  54                 *tmp = 0;
  55
  56         len = strlen(argv[1]);
  57
  58         *buf = 0;
  59         while ((strncmp(buf, argv[1], len) != 0) &&
  60                 (strncmp(buf + 2, argv[1], len) != 0)) {
  61                 if (r > 0) {
  62                         if (r1 > 0)
  63                                 write (1, buf1, r1);
  64                         r1 = r;
  65                         memcpy(buf1, buf, r);
  66                 }
  67                 if ((r = do_gets(buf)) <= 0)
  68                         exit(1);
  69         }
  70
  71         if (r1 > 2)
  72                 write(1, buf1, r1 - 2);
  73 }