Print the family name, weight, style, and width of a specification string given to Pango

describe_font.c

#include <pango/pango.h>
#include <glib.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

char*
get_arg_string(int argc, char** argv)
{
  size_t total_len = 0;
  char* s = NULL;

  if (argc > 1) {
    for (int i = 1; i < argc; ++i) total_len += strlen(*(argv+i));

    s = (char*) malloc(total_len + (argc-2) + 1);
    char* ptr = s;

    for (int i = 1; i < argc; ++i) {
      unsigned len = strlen(*(argv+i));

      // Add the space
      if (i > 1) {
        *ptr = ' ';
        ptr += 1;
      }

      memcpy(ptr, *(argv+i), len);
      ptr += len;
    }

    *ptr = '\0';
  }

  return s;
}

char*
stringify_desc(PangoFontDescription* desc) {
  static char s[2048];
  g_snprintf(s, 2048, "%s %i %i %i",
    pango_font_description_get_family(desc),
    pango_font_description_get_weight(desc),
    pango_font_description_get_stretch(desc),
    pango_font_description_get_style(desc));
  return s;
}

int
main (int argc, char** argv)
{
  char* s = get_arg_string(argc, argv);
  PangoFontDescription* desc = pango_font_description_from_string(s);
  free(s);
  printf("%s\n", stringify_desc(desc));
}