Compiled utility programs for rhel7

2017-01-25 11:37:53 +01:00
parent 6762b0d437
commit 5ed400e2ff
9 changed files with 1205 additions and 5 deletions
--- a/utils/rwpuffer.c
+++ b/utils/rwpuffer.c
@ -0,0 +1,136 @@
+/**
+ * This is a buffer to store bytes for reading and writing.
+ * 
+ * copyright: see file COPYRIGHT
+ * 
+ * Mark Koennecke, January 2009
+ *
+ * added resizing option and MakeBigRWPuffer in order to support transfer 
+ * of large amounts of image data on few connections
+ *
+ * Mark Koennecke, August 2014
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "rwpuffer.h"
+/*----------------------------------------------------------------------*/
+typedef struct __RWBuffer {
+  char *data;
+  int length;
+  int startPtr;
+  int endPtr;
+  int maxSize;
+} RWBuffer;
+/*----------------------------------------------------------------------*/
+prwBuffer MakeRWPuffer(int size)
+{
+  prwBuffer self = NULL;
+
+  self = malloc(sizeof(RWBuffer));
+  if (self == NULL) {
+    return NULL;
+  }
+  self->data = calloc(size, sizeof(char));
+  if (self->data == NULL) {
+    return NULL;
+  }
+  self->length = size;
+  self->startPtr = 0;
+  self->endPtr = 0;
+  self->maxSize = size;
+  return self;
+}
+/*------------------------------------------------------------------------*/
+prwBuffer MakeBigRWPuffer(int size, int maxSize)
+{
+  prwBuffer result = MakeRWPuffer(size);
+  if(result != NULL){
+    result->maxSize = maxSize;
+  }
+  return result;
+}
+/*------------------------------------------------------------------------*/
+void KillRWBuffer(prwBuffer self)
+{
+  if (self == NULL) {
+    return;
+  }
+  if (self->data != NULL) {
+    free(self->data);
+  }
+  free(self);
+}
+/*------------------------------------------------------------------------*/
+int CanStoreRWBuffer(prwBuffer self, void *data, int count)
+{
+  int length;
+  char *ptr;
+
+  length = self->endPtr - self->startPtr;
+  if (count + length >= self->length ) {
+    if(self->length < self->maxSize){
+      ptr = calloc(self->maxSize,sizeof(char));
+      if(ptr == NULL) {
+	  return 0;
+      }
+      memcpy(ptr,self->data, length*sizeof(char));
+      free(self->data);
+      self->data = ptr;
+      self->length = self->maxSize;
+    } else {
+      return 0;
+    }
+  }
+  return 1;
+}
+/*------------------------------------------------------------------------*/
+int StoreRWBuffer(prwBuffer self, void *data, int count)
+{
+  int length;
+  char *ptr;
+
+  length = self->endPtr - self->startPtr;
+  if (count + length >= self->length ) {
+    if(self->length < self->maxSize){
+      ptr = calloc(self->maxSize,sizeof(char));
+      if(ptr == NULL) {
+	  printf("HELP: RWBuffer overrun!!!!\n");
+	  return 0;
+      }
+      memcpy(ptr,self->data, length*sizeof(char));
+      free(self->data);
+      self->data = ptr;
+      self->length = self->maxSize;
+    } else {
+	  printf("HELP: RWBuffer overrun!!!!\n");
+	  return 0;
+    }
+  }
+  if (count + self->endPtr > self->length) {
+    memmove(self->data, self->data + self->startPtr, length);
+    self->startPtr = 0;
+    self->endPtr = length;
+  }
+  memcpy(self->data + self->endPtr, data, count);
+  self->endPtr += count;
+  return 1;
+}
+
+/*------------------------------------------------------------------------*/
+void *GetRWBufferData(prwBuffer self, int *length)
+{
+  *length = self->endPtr - self->startPtr;
+  return (void *) self->data + self->startPtr;
+}
+
+/*-------------------------------------------------------------------------*/
+void RemoveRWBufferData(prwBuffer self, int count)
+{
+  self->startPtr += count;
+  if (self->startPtr >= self->endPtr) {
+    self->startPtr = 0;
+    self->endPtr = 0;
+    memset(self->data,0,self->length*sizeof(char));
+  }
+}