Changeset 896 for branches/prototype-v0/zoo-project/zoo-kernel/service_internal.c

Timestamp:

Feb 25, 2019, 1:57:11 PM (5 years ago)

Author:

knut

Message:

Added some recent changes from trunk (r889), including some new utility functions and exception handling and new (conditional) definition of type bool. Added some new logic concerning Python and Mono environment and search paths. Fixed problem with Mono updateStatus function. Changed response_print.h to #include locale.h unconditionally and xlocale.h conditionally; xlocale.h is non-standard and can probably be dropped.

File:

• branches/prototype-v0/zoo-project/zoo-kernel/service_internal.c (modified) (1 diff)

branches/prototype-v0/zoo-project/zoo-kernel/service_internal.c

@@ -917 +917 @@
 }
 
+/**
+ * Check if file exists in specified folder
+ *
+ * @param dir the folder in which to search for file
+ * @param name the name of the file (not full path) 
+ * @return a character string with the full path [dir/name], or NULL if the file does not exist
+ *
+ * @attention Caller is responsible for applying free() to the returned pointer
+ */
+char* file_exists(const char* dir, const char* name) {
+        char* d = (dir != NULL ? dir : ".");
+        if (name != NULL) {
+                size_t length = strlen(d) + strlen(name) + 2; // including file separator and \0 character
+                char* path = (char*)calloc(length, sizeof(char));
+                snprintf(path, length, "%s/%s", d, name);
+
+                struct stat buffer;
+                if (stat(path, &buffer) != 0) {
+                        free(path);
+                        path = NULL;
+                }
+                return path;
+        }
+        else {
+                return NULL;
+        }
+}