Changeset 16344 for trunk/psModules/src/camera/pmFPAfileIO.c

Timestamp:

Feb 6, 2008, 2:09:40 PM (18 years ago)

Author:

Paul Price

Message:

Adding function to activate single file out of a list.

File:

• trunk/psModules/src/camera/pmFPAfileIO.c (modified) (2 diffs)

trunk/psModules/src/camera/pmFPAfileIO.c

@@ -914 +914 @@
 // set the state of the specified pmFPAfile to active (state == true) or inactive
 // if name is NULL, set the state for all pmFPAfiles
-bool pmFPAfileActivate (psMetadata *files, bool state, char *name)
+bool pmFPAfileActivate (psMetadata *files, bool state, const char *name)
 {
     PS_ASSERT_PTR_NON_NULL(files, false);
@@ -963 +963 @@
     return true;
 }
+
+
+pmFPAfile *pmFPAfileActivateSingle(psMetadata *files, bool state, const char *name, int num)
+{
+    PS_ASSERT_PTR_NON_NULL(files, NULL);
+    PS_ASSERT_STRING_NON_EMPTY(name, NULL);
+    PS_ASSERT_INT_NONNEGATIVE(num, NULL);
+
+    psString regex = NULL;              // Regular expression for psMetadataIteratorAlloc
+    psStringAppend(&regex, "^%s$", name);
+
+    int i = 0;                          // Counter
+    psMetadataItem *item = NULL;        // Item from iteration
+    psMetadataIterator *iter = psMetadataIteratorAlloc(files, PS_LIST_HEAD, regex); // Iterator
+    psFree(regex);
+    while ((item = psMetadataGetAndIncrement(iter))) {
+        if (i++ == num) {
+            pmFPAfile *file = item->data.V; // File of interest
+            if (state) {
+                file->state &= PS_NOT_U8(PM_FPA_STATE_INACTIVE);
+            } else {
+                file->state |= PM_FPA_STATE_INACTIVE;
+            }
+            psFree(iter);
+            return file;
+        }
+    }
+    psFree(iter);
+    return NULL;
+}