Changeset 957 for trunk/zoo-project/zoo-kernel

Timestamp:

Feb 6, 2020, 3:12:42 PM (5 years ago)

Author:

knut

Message:

Added function for allocating memory for map values (allocateMapValue). Fixed issue with getting attributes from input data node. Added code to support MIME subtype attributes in key-value pairs.

Location:

trunk/zoo-project/zoo-kernel

Files:

• request_parser.c (modified) (3 diffs)
• service.c (modified) (1 diff)
• service.h (modified) (1 diff)

trunk/zoo-project/zoo-kernel/request_parser.c

@@ -416 +416 @@
       while (pToken != NULL)
         {
-          outputs_as_text[i] =
+/*        outputs_as_text[i] =
             (char *) malloc ((strlen (pToken) + 1) * sizeof (char));
           if (outputs_as_text[i] == NULL)
@@ -427 +427 @@
                     pToken);
           pToken = strtok (NULL, ";");
-          i++;
+          i++; */
+          
+          // knut : rewrite above fragment to enable parsing of mimetype;subtype strings in key-value pairs:
+          
+          char* _token = zStrdup(pToken); 
+          pToken = strtok (NULL, ";");
+          
+          if (pToken != NULL && strncmp(pToken, "subtype=", 8) == 0)
+          {
+                 size_t _length = strlen(pToken) + strlen(_token) + 2; 
+                 outputs_as_text[i] = (char *) malloc(_length * sizeof (char));
+                 snprintf(outputs_as_text[i], _length, "%s;%s", _token, pToken);
+                 pToken = strtok (NULL, ";");
+          }
+          else
+          {
+                 outputs_as_text[i] = (char *) malloc((strlen(_token) + 1) * sizeof (char));
+                 snprintf (outputs_as_text[i], strlen(_token) + 1, "%s", _token);                
+          }
+          free(_token);
+          i++;    
         }
       for (j = 0; j < i; j++)
@@ -862 +882 @@
                     for (l = 0; l < 3; l++){
                       xmlChar *val =
-                          xmlGetProp (cur4, BAD_CAST coms[l]);
+                          //xmlGetProp (cur4, BAD_CAST coms[l]);
+                          xmlGetProp (cur2, BAD_CAST coms[l]);   // knut : get attributes from the Data xml element, not it's children (the content)
                         if (val != NULL && strlen ((char *) val) > 0){
                           if (tmpmaps->content != NULL)

trunk/zoo-project/zoo-kernel/service.c

@@ -1829 +1829 @@
 #endif
 #endif
+
+/*
+ * Dynamically allocate memory for a map value 
+ *
+ * @param node the map for which the value buffer should be allocated
+ * @param num_bytes the number of bytes to allocate
+ * @return pointer to the allocated memory buffer
+ *
+ * This function will free, and hence delete, any existing value in the map.
+ * The memory should be deallocated by calling freeMap.
+ */
+char* allocateMapValue(map* node, size_t num_bytes)
+{
+        if (node == NULL) {
+                return NULL;
+        }
+
+        if (node->value != NULL) {
+                free(node->value);
+        }
+        node->value = (char*) malloc(num_bytes);
+                
+        return node->value;
+}

trunk/zoo-project/zoo-kernel/service.h

@@ -481 +481 @@
   #define zooLogMsg(file,message) logMessage(__FILE__, __func__, __LINE__, (file), (message)) 
   #define zooLog logMessage(__FILE__, __func__, __LINE__)  
-
+  
+  // knut : function for pre-allocated memory for a map value;
+  // processing algorithms may be able to write directly to this space, thereby avoiding unneccesary copying of data
+  ZOO_DLL_EXPORT char* allocateMapValue(map* node, size_t num_bytes);  
+  
 #ifdef __cplusplus
 }