From 43103e4abd62828c0eb45dbda5d557a2e4bc5352 Mon Sep 17 00:00:00 2001
From: Dan Staples <dan.staples@riseup.net>
Date: Thu, 15 May 2014 17:04:48 -0400
Subject: [PATCH] change size_t to ssize_t to allow for returning negative
 error values

---
 src/list.c | 20 ++++++++++----------
 src/list.h |  6 +++---
 src/tree.c |  4 ++--
 src/tree.h |  4 ++--
 4 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/src/list.c b/src/list.c
index 6e2842e..7c755a5 100644
--- a/src/list.c
+++ b/src/list.c
@@ -183,34 +183,34 @@ _co_list_set_last(co_obj_t *list, _listnode_t *node)
   return 0;
 }
 
-static size_t  /* Done */
+static ssize_t  /* Done */
 _co_list_change_length(co_obj_t *list, const int delta)
 { 
   if(CO_TYPE(list) == _list16)
   {
     ((co_list16_t *)list)->_len += delta;
-    return (size_t)(((co_list16_t *)list)->_len);
+    return (ssize_t)(((co_list16_t *)list)->_len);
   } else if(CO_TYPE(list) == _list32) {
     ((co_list32_t *)list)->_len += delta;
-    return (size_t)(((co_list32_t *)list)->_len);
+    return (ssize_t)(((co_list32_t *)list)->_len);
   }
   ERROR("Not a list object.");
   return -1;
 }
 
-static size_t  /* Done */
+static ssize_t  /* Done */
 _co_list_increment(co_obj_t *list)
 { 
   return _co_list_change_length(list, 1);
 }
 
-static size_t /* Done */
+static ssize_t /* Done */
 _co_list_decrement(co_obj_t *list)
 { 
   return _co_list_change_length(list, -1);
 }
 
-size_t /* Done */
+ssize_t /* Done */
 co_list_length(co_obj_t *list)
 { 
   return _co_list_change_length(list, 0);
@@ -499,10 +499,10 @@ co_list_element(co_obj_t *list, const unsigned int index)
   return NULL;
 }
 
-size_t
+ssize_t
 co_list_raw(char *output, const size_t olen, const co_obj_t *list)
 {
-  size_t written = 0, read = 0;
+  ssize_t written = 0, read = 0;
   char *in = NULL;
   char *out = output;
   switch(CO_TYPE(list))
@@ -558,10 +558,10 @@ co_list_raw(char *output, const size_t olen, const co_obj_t *list)
   
 }
 
-size_t
+ssize_t
 co_list_import(co_obj_t **list, const char *input, const size_t ilen)
 {
-  size_t length = 0, olen = 0, read = 0;
+  ssize_t length = 0, olen = 0, read = 0;
   co_obj_t *obj = NULL;
   const char *cursor = input;
   switch((uint8_t)input[0])
diff --git a/src/list.h b/src/list.h
index b60fe2d..25e19be 100644
--- a/src/list.h
+++ b/src/list.h
@@ -51,7 +51,7 @@ _DECLARE_LIST(32);
  * @brief return length (number of objects) of given list
  * @param list list object
  */
-size_t co_list_length(co_obj_t *list);
+ssize_t co_list_length(co_obj_t *list);
 
 /**
  * @brief return first element of given list
@@ -162,7 +162,7 @@ co_obj_t *co_list_element(co_obj_t *list, const unsigned int index);
  * @param olen length of output buffer 
  * @param list list object to process
  */
-size_t co_list_raw(char *output, const size_t olen, const co_obj_t *list);
+ssize_t co_list_raw(char *output, const size_t olen, const co_obj_t *list);
 
 /**
  * @brief import list from raw representation
@@ -170,7 +170,7 @@ size_t co_list_raw(char *output, const size_t olen, const co_obj_t *list);
  * @param input input buffer 
  * @param ilen length of input buffer 
  */
-size_t co_list_import(co_obj_t **list, const char *input, const size_t ilen);
+ssize_t co_list_import(co_obj_t **list, const char *input, const size_t ilen);
 
 /**
  * @brief print list with indent
diff --git a/src/tree.c b/src/tree.c
index 36e5093..63882d9 100644
--- a/src/tree.c
+++ b/src/tree.c
@@ -619,7 +619,7 @@ _co_tree_raw_r(char **output, const size_t *olen, size_t *written, _treenode_t *
   return;
 }
 
-size_t
+ssize_t
 co_tree_raw(char *output, const size_t olen, const co_obj_t *tree)
 {
   char *out = output;
@@ -655,7 +655,7 @@ co_tree_raw(char *output, const size_t olen, const co_obj_t *tree)
 }
 
 
-size_t
+ssize_t
 co_tree_import(co_obj_t **tree, const char *input, const size_t ilen)
 {
   size_t length = 0, olen = 0, read = 0, klen = 0;
diff --git a/src/tree.h b/src/tree.h
index 2ccaa4e..896082f 100644
--- a/src/tree.h
+++ b/src/tree.h
@@ -200,7 +200,7 @@ void co_tree_destroy(co_obj_t *root);
  * @param olen length of output buffer
  * @param tree tree to dump
  */
-size_t co_tree_raw(char *output, const size_t olen, const co_obj_t *tree);
+ssize_t co_tree_raw(char *output, const size_t olen, const co_obj_t *tree);
 
 /**
  * @brief import raw representation of tree
@@ -208,7 +208,7 @@ size_t co_tree_raw(char *output, const size_t olen, const co_obj_t *tree);
  * @param input input buffer
  * @param ilen length of input buffer
  */
-size_t co_tree_import(co_obj_t **tree, const char *input, const size_t ilen);
+ssize_t co_tree_import(co_obj_t **tree, const char *input, const size_t ilen);
 
 /**
  * @brief print tree with indent