1 files changed, 137 insertions, 0 deletions
diff --git a/examples/c/example4.c b/examples/c/example4.c
new file mode 100644
index 0000000..05396c5
--- /dev/null
+++ b/examples/c/example4.c
@@ -0,0 +1,137 @@
+/* ----------------------------------------------------------------------------
+   libconfig - A library for processing structured configuration files
+   Copyright (C) 2005-2018  Mark A Lindner
+
+   This file is part of libconfig.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, see
+   <http://www.gnu.org/licenses/>.
+   ----------------------------------------------------------------------------
+*/
+
+#include <dirent.h>
+#include <fnmatch.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include <libconfig.h>
+
+/* This example reads the configuration file 'example.cfg' and displays
+ * some of its contents.
+ */
+
+static const char **include_func(config_t *config,
+                                 const char *include_dir,
+                                 const char *path,
+                                 const char **error)
+{
+  char *p;
+  DIR *dp;
+  struct dirent *dir_entry;
+  struct stat stat_buf;
+  char include_path[PATH_MAX + 1];
+  size_t include_path_len = 0;
+  char file_path[PATH_MAX + 1];
+  char **result = NULL;
+  char **result_next = result;
+  int result_count = 0;
+  int result_capacity = 0;
+
+  *include_path = 0;
+
+  if(*path != '/')
+  {
+    if(include_dir)
+    {
+      strcat(include_path, include_dir);
+      include_path_len += strlen(include_dir);
+    }
+  }
+
+  p = strrchr(path, '/');
+  if(p > path)
+  {
+    int len = p - path;
+
+    if((include_path_len > 0)
+       && (*(include_path + include_path_len - 1) != '/'))
+    {
+      strcat(include_path, "/");
+      ++include_path_len;
+    }
+
+    strncat(include_path, path, len);
+    include_path_len += len;
+  }
+
+  if(include_path_len == 0)
+  {
+    strcpy(include_path, ".");
+    include_path_len = 1;
+  }
+
+  dp = opendir(include_path);
+  if(dp)
+  {
+    while((dir_entry = readdir(dp)) != NULL)
+    {
+      snprintf(file_path, PATH_MAX, "%s/%s", include_path, dir_entry->d_name);
+      if(lstat(file_path, &stat_buf) != 0) continue;
+      if(!S_ISREG(stat_buf.st_mode)) continue;
+      if(fnmatch(path, file_path, FNM_PATHNAME) != 0) continue;
+
+      if(result_count == result_capacity)
+      {
+        result_capacity += 16;
+        result = (char **)realloc(result, (result_capacity + 1) * sizeof(char *));
+        result_next = result + result_count;
+      }
+
+      *result_next = strdup(file_path);
+      ++result_next;
+      ++result_count;
+
+      printf("file: %s\n", file_path);
+    }
+    closedir(dp);
+  }
+
+  *result_next = NULL;
+
+  return((const char **)result);
+}
+
+int main(int argc, char **argv)
+{
+  config_t cfg;
+
+  config_init(&cfg);
+  config_set_include_func(&cfg, include_func);
+
+  /* Read the file. If there is an error, report it and exit. */
+  if(! config_read_file(&cfg, "example4.cfg"))
+  {
+    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
+            config_error_line(&cfg), config_error_text(&cfg));
+    config_destroy(&cfg);
+    return(EXIT_FAILURE);
+  }
+
+  config_write(&cfg, stdout);
+
+  return(EXIT_SUCCESS);
+}