Add implementation

1 files changed, 166 insertions, 0 deletions

diff --git a/tests/basic/driver.c b/tests/basic/driver.c
new file mode 100644
index 0000000..1f861de
--- /dev/null
+++ b/tests/basic/driver.c
@@ -0,0 +1,166 @@
+/* file      : tests/basic/driver.c
+ * copyright : Copyright (c) 2016-2017 Code Synthesis Ltd
+ * license   : ISC; see accompanying COPYING file
+ */
+
+/*
+ * Enable assertions.
+ */
+#ifdef NDEBUG
+#  undef NDEBUG
+#endif
+
+#include <libpkgconf/libpkgconf.h>
+
+#include <stdio.h>   /* printf(), fprintf(), stderr */
+#include <stddef.h>  /* NULL */
+#include <stdlib.h>  /* free() */
+#include <assert.h>
+#include <string.h>  /* strcmp() */
+#include <stdbool.h> /* bool, true, false */
+
+static bool
+error_handler (const char* msg, const pkgconf_client_t* c, const void* d)
+{
+  (void) c; /* Unused. */
+  (void) d; /* Unused. */
+
+  /*
+   * Seems it always have a trailing newline char. Probably it still a good
+   * idea to check if it is. Let's see if it ever be missed.
+   *
+   */
+  fprintf (stderr, "%s", msg);
+  return true;
+}
+
+static void
+print_and_free (pkgconf_list_t* list)
+{
+  char* buf = pkgconf_fragment_render (list, /* escape */ true);
+  printf("%s", buf);
+  free (buf);
+
+  pkgconf_fragment_free (list);
+}
+
+/*
+ * Usage: argv[0] [--cflags] [--libs] (--with-path <dir>)* <name>
+ *
+ * Print package compiler and linker flags. If the package name has '.pc'
+ * extension it is interpreted as a file name. Prints all flags, as pkgconf
+ * utility does when --keep-system-libs and --keep-system-cflags are specified.
+ *
+ * --cflags
+ *     Print compiler flags.
+ *
+ * --libs
+ *     Print linker flags.
+ *
+ * --with-path <dir>
+ *     Search through the directory for pc-files. If at least one --with-path
+ *     is specified then the default directories are not searched through.
+ */
+int
+main (int argc, const char* argv[])
+{
+  pkgconf_client_t* c =
+    pkgconf_client_new (error_handler, /* error_handler_data */ NULL);
+
+  assert (c != NULL);
+
+  bool cflags = false;
+  bool libs = false;
+  bool default_dirs = true;
+  int client_flags = 0;
+
+  int i = 1;
+  for (; i < argc; ++i)
+  {
+    const char* o = argv[i];
+
+    if (strcmp (o, "--cflags") == 0)
+      cflags = true;
+    else if (strcmp (o, "--libs") == 0)
+      libs = true;
+    else if (strcmp (o, "--static") == 0)
+      client_flags = PKGCONF_PKG_PKGF_SEARCH_PRIVATE |
+                     PKGCONF_PKG_PKGF_MERGE_PRIVATE_FRAGMENTS;
+    else if (strcmp (o, "--with-path") == 0)
+    {
+      ++i;
+      assert (i < argc);
+
+      pkgconf_path_add (argv[i], &c->dir_list, /* filter_duplicates */ true);
+      default_dirs = false;
+    }
+    else
+      break;
+  }
+
+  assert (i + 1 == argc);
+  const char* name = argv[i];
+
+  int r = 1;
+  int max_depth = 2000;
+
+  pkgconf_client_set_flags (c, client_flags);
+
+  /*
+   * Bootstrap the package search default paths if not specified explicitly.
+   */
+  if (default_dirs)
+    pkgconf_pkg_dir_list_build (c);
+
+  pkgconf_pkg_t* p = pkgconf_pkg_find (c, name);
+
+  if (p != NULL)
+  {
+    int e = PKGCONF_PKG_ERRF_OK;
+
+    /*
+     * Print C flags.
+     */
+    if (cflags)
+    {
+      pkgconf_client_set_flags (
+        c,
+        client_flags | PKGCONF_PKG_PKGF_SEARCH_PRIVATE);
+
+      pkgconf_list_t list = PKGCONF_LIST_INITIALIZER;
+      e = pkgconf_pkg_cflags (c, p, &list, max_depth);
+
+      if (e == PKGCONF_PKG_ERRF_OK)
+        print_and_free (&list);
+
+      pkgconf_client_set_flags (c, client_flags); /* Restore. */
+    }
+
+    /*
+     * Print libs.
+     */
+    if (libs && e == PKGCONF_PKG_ERRF_OK)
+    {
+      pkgconf_list_t list = PKGCONF_LIST_INITIALIZER;
+      e = pkgconf_pkg_libs (c, p, &list, max_depth);
+
+      if (e == PKGCONF_PKG_ERRF_OK)
+        print_and_free (&list);
+    }
+
+    if (e == PKGCONF_PKG_ERRF_OK)
+    {
+      r = 0;
+
+      if (cflags || libs)
+        printf ("\n");
+    }
+
+    pkgconf_pkg_unref (c, p);
+  }
+  else
+    fprintf (stderr, "package '%s' not found\n", name);
+
+  pkgconf_client_free (c);
+  return r;
+}