Adjust indirect form (#i"path") to be relative to the current file.

reader.c

@@ -1,3 +1,10 @@
+#define _XOPEN_SOURCE 500
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
 #include <ctype.h>
 #include <inttypes.h>
 #include <stdbool.h>
@@ -47,7 +54,7 @@ static value_t patch_placeholders(reader_state_t *state, value_t v);
 
 static void tree_replace(value_t *in, value_t oldval, value_t newval);
 
-value_t read_value(FILE *f)
+value_t read_value_from_file(FILE *f)
 {
   reader_state_t state;
   value_t result;
@@ -72,6 +79,38 @@ value_t read_value(FILE *f)
   return result;
 }
 
+value_t read_value_from_path(const char *path)
+{
+  FILE *f = fopen(path, "r");
+  const char *last_slash;
+  value_t v;
+  int dirfd;
+
+  release_assert(f != NULL);
+
+  dirfd = open(".", O_RDONLY);
+  release_assert(dirfd >= 0);
+
+  last_slash = strrchr(path, '/');
+
+  if (last_slash)
+  {
+    size_t bytes = last_slash - path;
+    char *dirname = (char*)malloc(bytes+1);
+    memcpy(dirname, path, bytes);
+    dirname[bytes] = '\0';
+    chdir(dirname);
+  }
+
+  v = read_value_from_file(f);
+  fchdir(dirfd);
+  close(dirfd);
+
+  fclose(f);
+
+  return v;
+}
+
 static value_t read_one_value(reader_state_t *state)
 {
   skip_whitespace(state);
@@ -676,13 +715,8 @@ static value_t read_placeholder(reader_state_t *state)
 static value_t read_indirect(value_t path)
 {
   char *name = value_to_string(path);
-  FILE *f = fopen(name, "r");
-  value_t v;
+  value_t v = read_value_from_path(name);
   free(name);
-
-  release_assert(f != NULL);
-  v = read_value(f);
-  fclose(f);
   return v;
 }
 

reader.h

@@ -1,9 +1,12 @@
 #ifndef READER_H_bc8f9bf546e3914a72851703b38326d2
 #define READER_H_bc8f9bf546e3914a72851703b38326d2
 
+#include <stdio.h>
+
 #include "gc.h"
 
-value_t read_value(FILE *f);
+value_t read_value_from_file(FILE *f);
+value_t read_value_from_path(const char *path);
 
 #endif
 /* vim:set sw=2 expandtab: */

rosella.c

@@ -37,19 +37,21 @@ int main(int argc, char **argv)
   interpreter_init();
   io_builtin_init();
 
-  if (argc < 2 || (strcmp(argv[1], "-k") == 0))
+  if (argc < 2 || (strcmp(argv[1], "-t") == 0) || (strcmp(argv[1], "--test") == 0))
   {
     test_builtins();
     test_weak_boxes_and_wills();
-    if (argc > 1)
+    test_garbage_collection(false);
+  }
+  else if ((strcmp(argv[1], "-b") == 0) || (strcmp(argv[1], "--burn-in") == 0))
+  {
+    test_garbage_collection(true);
+  }
+  else if ((strcmp(argv[1], "-r") == 0) || (strcmp(argv[1], "--reader") == 0))
+  {
     test_reader();
-    test_garbage_collection(argc > 1);
   }
   else
-  {
-    FILE *f = fopen(argv[1], "r");
-
-    if (f)
   {
     gc_root_t argv_root;
     value_t program;
@@ -64,8 +66,7 @@ int main(int argc, char **argv)
       argv_root.value = cons(temp, argv_root.value);
     }
     
-      program = read_value(f);
-      fclose(f);
+    program = read_value_from_path(argv[1]);
 
     unregister_gc_root(&argv_root);
     results = run_interpreter(program, argv_root.value);
@@ -83,11 +84,6 @@ int main(int argc, char **argv)
     fprint_gc_stats(stderr);
 #endif
   }
-    else
-    {
-      perror(argv[1]);
-    }
-  }
 
   return 0;
 }
@@ -206,7 +202,7 @@ static void test_reader(void)
     fputs("> ", stdout);
     fflush(stdout);
 
-    v = read_value(stdin);
+    v = read_value_from_file(stdin);
 
     print_value(v); nl();
     nl();