proplib/prop_write_array.c

   1 /*
   2  * Compile with:
   3  * gcc prop_write_array.c -o prop_write_array -lprop -Wall -W -Wextra -ansi -pedantic
   4  */
   5
   6 #include <err.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <prop/proplib.h>
  10
  11 #define INIT_CAPACITY 10
  12
  13 int
  14 main(int argc, char *argv[])
  15 {
  16     /*
  17      * Declare a pointer to a prop_array object
  18      * Note that prop_array_t is a pointer being
  19      * hidden inside a typedef, i.e.
  20      * typedef struct _prop_array *prop_array_t;
  21      */
  22     prop_array_t pa;
  23     prop_string_t ps;
  24     int i;
  25
  26     /*
  27      * Create array object with initial capacity
  28      * set to `INIT_CAPACITY'.
  29      * Note that the array will expand on demand
  30      * by the prop_array_add() with `EXPAND_STEP' step
  31      * as defined in libprop/prop_array.c
  32      */
  33     pa = prop_array_create_with_capacity(INIT_CAPACITY);
  34     if (pa == NULL)
  35         err(EXIT_FAILURE, "prop_array_create_with_capacity()");
  36
  37     /*
  38      * For every argument, create a prop_string_t object
  39      * that references it and store it in the array
  40      */
  41     for (i = 0; i < argc; i++) {
  42         ps = prop_string_create_cstring_nocopy(argv[i]);
  43         if (ps == NULL) {
  44             prop_object_release(pa);
  45             err(EXIT_FAILURE, "prop_string_create_cstring_nocopy()");
  46         }
  47
  48         if (prop_array_add(pa, ps) == FALSE) {
  49             prop_object_release(pa);
  50             prop_object_release(ps);
  51             err(EXIT_FAILURE, "prop_array_add()");
  52         }
  53
  54         prop_object_release(ps);
  55     }
  56
  57     /* Export array contents to file as XML */
  58     if (prop_array_externalize_to_file(pa, "./data.xml") == FALSE) {
  59         prop_object_release(pa);
  60         err(EXIT_FAILURE, "prop_array_externalize_to_file()");
  61     }
  62
  63     /* Release array object */
  64     prop_object_release(pa);
  65
  66     return EXIT_SUCCESS;
  67 }