git.ozlabs.org Git - ccan/blob - ccan/read_write_all/_info

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "config.h"
   4
   5 /**
   6  * read_write_all - read_all and write_all routines.
   7  *
   8  * Successful read and write calls may only partly complete if a
   9  * signal is received or they are not operating on a normal file.
  10  *
  11  * read_all() and write_all() do the looping for you.
  12  *
  13  * Example:
  14  *      #include <err.h>
  15  *      #include <stdio.h>
  16  *      #include <unistd.h>
  17  *      #include <ccan/read_write_all/read_write_all.h>
  18  *
  19  *      #define BUFFER_SIZE 10
  20  *      int main(int argc, char *argv[])
  21  *      {
  22  *              char buffer[BUFFER_SIZE+1];
  23  *
  24  *              if (!read_all(STDIN_FILENO, buffer, BUFFER_SIZE))
  25  *                      err(1, "Could not read %u characters", BUFFER_SIZE);
  26  *              buffer[BUFFER_SIZE] = '\0';
  27  *              printf("I read '%.*s'\n", BUFFER_SIZE, buffer);
  28  *              return 0;
  29  *      }
  30  *
  31  * License: LGPL (2 or any later version)
  32  * Author: Rusty Russell <rusty@rustcorp.com.au>
  33  */
  34 int main(int argc, char *argv[])
  35 {
  36         if (argc != 2)
  37                 return 1;
  38
  39         if (strcmp(argv[1], "depends") == 0) {
  40                 return 0;
  41         }
  42
  43         return 1;
  44 }