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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-05-01 16:13:57 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-05-01 16:13:57 +0200
commit094535c010320967639e8e86f974d878e80baa72 (patch)
treeefc3094b20355dcbeebb2c4ece4fcfc69bffedb5 /xml/mxml-node.c
parentc07d0c2d2f6f7b0eb6e92cc6204bf05037957e82 (diff)
Imported Upstream version 1.7.0upstream/1.7.0
Diffstat (limited to 'xml/mxml-node.c')
-rw-r--r--xml/mxml-node.c807
1 files changed, 807 insertions, 0 deletions
diff --git a/xml/mxml-node.c b/xml/mxml-node.c
new file mode 100644
index 0000000..44af759
--- /dev/null
+++ b/xml/mxml-node.c
@@ -0,0 +1,807 @@
+/*
+ * "$Id: mxml-node.c 436 2011-01-22 01:02:05Z mike $"
+ *
+ * Node support code for Mini-XML, a small XML-like file parsing library.
+ *
+ * Copyright 2003-2011 by Michael R Sweet.
+ *
+ * These coded instructions, statements, and computer programs are the
+ * property of Michael R Sweet and are protected by Federal copyright
+ * law. Distribution and use rights are outlined in the file "COPYING"
+ * which should have been included with this file. If this file is
+ * missing or damaged, see the license at:
+ *
+ * http://www.minixml.org/
+ *
+ * Contents:
+ *
+ * mxmlAdd() - Add a node to a tree.
+ * mxmlDelete() - Delete a node and all of its children.
+ * mxmlGetRefCount() - Get the current reference (use) count for a node.
+ * mxmlNewCDATA() - Create a new CDATA node.
+ * mxmlNewCustom() - Create a new custom data node.
+ * mxmlNewElement() - Create a new element node.
+ * mxmlNewInteger() - Create a new integer node.
+ * mxmlNewOpaque() - Create a new opaque string.
+ * mxmlNewReal() - Create a new real number node.
+ * mxmlNewText() - Create a new text fragment node.
+ * mxmlNewTextf() - Create a new formatted text fragment node.
+ * mxmlRemove() - Remove a node from its parent.
+ * mxmlNewXML() - Create a new XML document tree.
+ * mxmlRelease() - Release a node.
+ * mxmlRetain() - Retain a node.
+ * mxml_new() - Create a new node.
+ */
+
+/*
+ * Include necessary headers...
+ */
+
+#include "config.h"
+#include "mxml.h"
+
+
+/*
+ * Local functions...
+ */
+
+static mxml_node_t *mxml_new(mxml_node_t *parent, mxml_type_t type);
+
+
+/*
+ * 'mxmlAdd()' - Add a node to a tree.
+ *
+ * Adds the specified node to the parent. If the child argument is not
+ * NULL, puts the new node before or after the specified child depending
+ * on the value of the where argument. If the child argument is NULL,
+ * puts the new node at the beginning of the child list (MXML_ADD_BEFORE)
+ * or at the end of the child list (MXML_ADD_AFTER). The constant
+ * MXML_ADD_TO_PARENT can be used to specify a NULL child pointer.
+ */
+
+void
+mxmlAdd(mxml_node_t *parent, /* I - Parent node */
+ int where, /* I - Where to add, MXML_ADD_BEFORE or MXML_ADD_AFTER */
+ mxml_node_t *child, /* I - Child node for where or MXML_ADD_TO_PARENT */
+ mxml_node_t *node) /* I - Node to add */
+{
+#ifdef DEBUG
+ fprintf(stderr, "mxmlAdd(parent=%p, where=%d, child=%p, node=%p)\n", parent,
+ where, child, node);
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!parent || !node)
+ return;
+
+#if DEBUG > 1
+ fprintf(stderr, " BEFORE: node->parent=%p\n", node->parent);
+ if (parent)
+ {
+ fprintf(stderr, " BEFORE: parent->child=%p\n", parent->child);
+ fprintf(stderr, " BEFORE: parent->last_child=%p\n", parent->last_child);
+ fprintf(stderr, " BEFORE: parent->prev=%p\n", parent->prev);
+ fprintf(stderr, " BEFORE: parent->next=%p\n", parent->next);
+ }
+#endif /* DEBUG > 1 */
+
+ /*
+ * Remove the node from any existing parent...
+ */
+
+ if (node->parent)
+ mxmlRemove(node);
+
+ /*
+ * Reset pointers...
+ */
+
+ node->parent = parent;
+
+ switch (where)
+ {
+ case MXML_ADD_BEFORE :
+ if (!child || child == parent->child || child->parent != parent)
+ {
+ /*
+ * Insert as first node under parent...
+ */
+
+ node->next = parent->child;
+
+ if (parent->child)
+ parent->child->prev = node;
+ else
+ parent->last_child = node;
+
+ parent->child = node;
+ }
+ else
+ {
+ /*
+ * Insert node before this child...
+ */
+
+ node->next = child;
+ node->prev = child->prev;
+
+ if (child->prev)
+ child->prev->next = node;
+ else
+ parent->child = node;
+
+ child->prev = node;
+ }
+ break;
+
+ case MXML_ADD_AFTER :
+ if (!child || child == parent->last_child || child->parent != parent)
+ {
+ /*
+ * Insert as last node under parent...
+ */
+
+ node->parent = parent;
+ node->prev = parent->last_child;
+
+ if (parent->last_child)
+ parent->last_child->next = node;
+ else
+ parent->child = node;
+
+ parent->last_child = node;
+ }
+ else
+ {
+ /*
+ * Insert node after this child...
+ */
+
+ node->prev = child;
+ node->next = child->next;
+
+ if (child->next)
+ child->next->prev = node;
+ else
+ parent->last_child = node;
+
+ child->next = node;
+ }
+ break;
+ }
+
+#if DEBUG > 1
+ fprintf(stderr, " AFTER: node->parent=%p\n", node->parent);
+ if (parent)
+ {
+ fprintf(stderr, " AFTER: parent->child=%p\n", parent->child);
+ fprintf(stderr, " AFTER: parent->last_child=%p\n", parent->last_child);
+ fprintf(stderr, " AFTER: parent->prev=%p\n", parent->prev);
+ fprintf(stderr, " AFTER: parent->next=%p\n", parent->next);
+ }
+#endif /* DEBUG > 1 */
+}
+
+
+/*
+ * 'mxmlDelete()' - Delete a node and all of its children.
+ *
+ * If the specified node has a parent, this function first removes the
+ * node from its parent using the mxmlRemove() function.
+ */
+
+void
+mxmlDelete(mxml_node_t *node) /* I - Node to delete */
+{
+ int i; /* Looping var */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlDelete(node=%p)\n", node);
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!node)
+ return;
+
+ /*
+ * Remove the node from its parent, if any...
+ */
+
+ mxmlRemove(node);
+
+ /*
+ * Delete children...
+ */
+
+ while (node->child)
+ mxmlDelete(node->child);
+
+ /*
+ * Now delete any node data...
+ */
+
+ switch (node->type)
+ {
+ case MXML_ELEMENT :
+ if (node->value.element.name)
+ free(node->value.element.name);
+
+ if (node->value.element.num_attrs)
+ {
+ for (i = 0; i < node->value.element.num_attrs; i ++)
+ {
+ if (node->value.element.attrs[i].name)
+ free(node->value.element.attrs[i].name);
+ if (node->value.element.attrs[i].value)
+ free(node->value.element.attrs[i].value);
+ }
+
+ free(node->value.element.attrs);
+ }
+ break;
+ case MXML_INTEGER :
+ /* Nothing to do */
+ break;
+ case MXML_OPAQUE :
+ if (node->value.opaque)
+ free(node->value.opaque);
+ break;
+ case MXML_REAL :
+ /* Nothing to do */
+ break;
+ case MXML_TEXT :
+ if (node->value.text.string)
+ free(node->value.text.string);
+ break;
+ case MXML_CUSTOM :
+ if (node->value.custom.data &&
+ node->value.custom.destroy)
+ (*(node->value.custom.destroy))(node->value.custom.data);
+ break;
+ default :
+ break;
+ }
+
+ /*
+ * Free this node...
+ */
+
+ free(node);
+}
+
+
+/*
+ * 'mxmlGetRefCount()' - Get the current reference (use) count for a node.
+ *
+ * The initial reference count of new nodes is 1. Use the @link mxmlRetain@
+ * and @link mxmlRelease@ functions to increment and decrement a node's
+ * reference count.
+ *
+ * @since Mini-XML 2.7@.
+ */
+
+int /* O - Reference count */
+mxmlGetRefCount(mxml_node_t *node) /* I - Node */
+{
+ /*
+ * Range check input...
+ */
+
+ if (!node)
+ return (0);
+
+ /*
+ * Return the reference count...
+ */
+
+ return (node->ref_count);
+}
+
+
+/*
+ * 'mxmlNewCDATA()' - Create a new CDATA node.
+ *
+ * The new CDATA node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * CDATA node has no parent. The data string must be nul-terminated and
+ * is copied into the new node. CDATA nodes use the MXML_ELEMENT type.
+ *
+ * @since Mini-XML 2.3@
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewCDATA(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ const char *data) /* I - Data string */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewCDATA(parent=%p, data=\"%s\")\n",
+ parent, data ? data : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!data)
+ return (NULL);
+
+ /*
+ * Create the node and set the name value...
+ */
+
+ if ((node = mxml_new(parent, MXML_ELEMENT)) != NULL)
+ node->value.element.name = _mxml_strdupf("![CDATA[%s]]", data);
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewCustom()' - Create a new custom data node.
+ *
+ * The new custom node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * element node has no parent. NULL can be passed when the data in the
+ * node is not dynamically allocated or is separately managed.
+ *
+ * @since Mini-XML 2.1@
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewCustom(
+ mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ void *data, /* I - Pointer to data */
+ mxml_custom_destroy_cb_t destroy) /* I - Function to destroy data */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewCustom(parent=%p, data=%p, destroy=%p)\n", parent,
+ data, destroy);
+#endif /* DEBUG */
+
+ /*
+ * Create the node and set the value...
+ */
+
+ if ((node = mxml_new(parent, MXML_CUSTOM)) != NULL)
+ {
+ node->value.custom.data = data;
+ node->value.custom.destroy = destroy;
+ }
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewElement()' - Create a new element node.
+ *
+ * The new element node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * element node has no parent.
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewElement(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ const char *name) /* I - Name of element */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewElement(parent=%p, name=\"%s\")\n", parent,
+ name ? name : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!name)
+ return (NULL);
+
+ /*
+ * Create the node and set the element name...
+ */
+
+ if ((node = mxml_new(parent, MXML_ELEMENT)) != NULL)
+ node->value.element.name = strdup(name);
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewInteger()' - Create a new integer node.
+ *
+ * The new integer node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * integer node has no parent.
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewInteger(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ int integer) /* I - Integer value */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewInteger(parent=%p, integer=%d)\n", parent, integer);
+#endif /* DEBUG */
+
+ /*
+ * Create the node and set the element name...
+ */
+
+ if ((node = mxml_new(parent, MXML_INTEGER)) != NULL)
+ node->value.integer = integer;
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewOpaque()' - Create a new opaque string.
+ *
+ * The new opaque node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * opaque node has no parent. The opaque string must be nul-terminated and
+ * is copied into the new node.
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewOpaque(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ const char *opaque) /* I - Opaque string */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewOpaque(parent=%p, opaque=\"%s\")\n", parent,
+ opaque ? opaque : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!opaque)
+ return (NULL);
+
+ /*
+ * Create the node and set the element name...
+ */
+
+ if ((node = mxml_new(parent, MXML_OPAQUE)) != NULL)
+ node->value.opaque = strdup(opaque);
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewReal()' - Create a new real number node.
+ *
+ * The new real number node is added to the end of the specified parent's
+ * child list. The constant MXML_NO_PARENT can be used to specify that
+ * the new real number node has no parent.
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewReal(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ double real) /* I - Real number value */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewReal(parent=%p, real=%g)\n", parent, real);
+#endif /* DEBUG */
+
+ /*
+ * Create the node and set the element name...
+ */
+
+ if ((node = mxml_new(parent, MXML_REAL)) != NULL)
+ node->value.real = real;
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewText()' - Create a new text fragment node.
+ *
+ * The new text node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * text node has no parent. The whitespace parameter is used to specify
+ * whether leading whitespace is present before the node. The text
+ * string must be nul-terminated and is copied into the new node.
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewText(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ int whitespace, /* I - 1 = leading whitespace, 0 = no whitespace */
+ const char *string) /* I - String */
+{
+ mxml_node_t *node; /* New node */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewText(parent=%p, whitespace=%d, string=\"%s\")\n",
+ parent, whitespace, string ? string : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!string)
+ return (NULL);
+
+ /*
+ * Create the node and set the text value...
+ */
+
+ if ((node = mxml_new(parent, MXML_TEXT)) != NULL)
+ {
+ node->value.text.whitespace = whitespace;
+ node->value.text.string = strdup(string);
+ }
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlNewTextf()' - Create a new formatted text fragment node.
+ *
+ * The new text node is added to the end of the specified parent's child
+ * list. The constant MXML_NO_PARENT can be used to specify that the new
+ * text node has no parent. The whitespace parameter is used to specify
+ * whether leading whitespace is present before the node. The format
+ * string must be nul-terminated and is formatted into the new node.
+ */
+
+mxml_node_t * /* O - New node */
+mxmlNewTextf(mxml_node_t *parent, /* I - Parent node or MXML_NO_PARENT */
+ int whitespace, /* I - 1 = leading whitespace, 0 = no whitespace */
+ const char *format, /* I - Printf-style frmat string */
+ ...) /* I - Additional args as needed */
+{
+ mxml_node_t *node; /* New node */
+ va_list ap; /* Pointer to arguments */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlNewTextf(parent=%p, whitespace=%d, format=\"%s\", ...)\n",
+ parent, whitespace, format ? format : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!format)
+ return (NULL);
+
+ /*
+ * Create the node and set the text value...
+ */
+
+ if ((node = mxml_new(parent, MXML_TEXT)) != NULL)
+ {
+ va_start(ap, format);
+
+ node->value.text.whitespace = whitespace;
+ node->value.text.string = _mxml_vstrdupf(format, ap);
+
+ va_end(ap);
+ }
+
+ return (node);
+}
+
+
+/*
+ * 'mxmlRemove()' - Remove a node from its parent.
+ *
+ * Does not free memory used by the node - use mxmlDelete() for that.
+ * This function does nothing if the node has no parent.
+ */
+
+void
+mxmlRemove(mxml_node_t *node) /* I - Node to remove */
+{
+#ifdef DEBUG
+ fprintf(stderr, "mxmlRemove(node=%p)\n", node);
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!node || !node->parent)
+ return;
+
+ /*
+ * Remove from parent...
+ */
+
+#if DEBUG > 1
+ fprintf(stderr, " BEFORE: node->parent=%p\n", node->parent);
+ if (node->parent)
+ {
+ fprintf(stderr, " BEFORE: node->parent->child=%p\n", node->parent->child);
+ fprintf(stderr, " BEFORE: node->parent->last_child=%p\n", node->parent->last_child);
+ }
+ fprintf(stderr, " BEFORE: node->child=%p\n", node->child);
+ fprintf(stderr, " BEFORE: node->last_child=%p\n", node->last_child);
+ fprintf(stderr, " BEFORE: node->prev=%p\n", node->prev);
+ fprintf(stderr, " BEFORE: node->next=%p\n", node->next);
+#endif /* DEBUG > 1 */
+
+ if (node->prev)
+ node->prev->next = node->next;
+ else
+ node->parent->child = node->next;
+
+ if (node->next)
+ node->next->prev = node->prev;
+ else
+ node->parent->last_child = node->prev;
+
+ node->parent = NULL;
+ node->prev = NULL;
+ node->next = NULL;
+
+#if DEBUG > 1
+ fprintf(stderr, " AFTER: node->parent=%p\n", node->parent);
+ if (node->parent)
+ {
+ fprintf(stderr, " AFTER: node->parent->child=%p\n", node->parent->child);
+ fprintf(stderr, " AFTER: node->parent->last_child=%p\n", node->parent->last_child);
+ }
+ fprintf(stderr, " AFTER: node->child=%p\n", node->child);
+ fprintf(stderr, " AFTER: node->last_child=%p\n", node->last_child);
+ fprintf(stderr, " AFTER: node->prev=%p\n", node->prev);
+ fprintf(stderr, " AFTER: node->next=%p\n", node->next);
+#endif /* DEBUG > 1 */
+}
+
+
+/*
+ * 'mxmlNewXML()' - Create a new XML document tree.
+ *
+ * The "version" argument specifies the version number to put in the
+ * ?xml element node. If NULL, version 1.0 is assumed.
+ *
+ * @since Mini-XML 2.3@
+ */
+
+mxml_node_t * /* O - New ?xml node */
+mxmlNewXML(const char *version) /* I - Version number to use */
+{
+ char element[1024]; /* Element text */
+
+
+ snprintf(element, sizeof(element), "?xml version=\"%s\" encoding=\"utf-8\"?",
+ version ? version : "1.0");
+
+ return (mxmlNewElement(NULL, element));
+}
+
+
+/*
+ * 'mxmlRelease()' - Release a node.
+ *
+ * When the reference count reaches zero, the node (and any children)
+ * is deleted via mxmlDelete().
+ *
+ * @since Mini-XML 2.3@
+ */
+
+int /* O - New reference count */
+mxmlRelease(mxml_node_t *node) /* I - Node */
+{
+ if (node)
+ {
+ if ((-- node->ref_count) <= 0)
+ {
+ mxmlDelete(node);
+ return (0);
+ }
+ else
+ return (node->ref_count);
+ }
+ else
+ return (-1);
+}
+
+
+/*
+ * 'mxmlRetain()' - Retain a node.
+ *
+ * @since Mini-XML 2.3@
+ */
+
+int /* O - New reference count */
+mxmlRetain(mxml_node_t *node) /* I - Node */
+{
+ if (node)
+ return (++ node->ref_count);
+ else
+ return (-1);
+}
+
+
+/*
+ * 'mxml_new()' - Create a new node.
+ */
+
+static mxml_node_t * /* O - New node */
+mxml_new(mxml_node_t *parent, /* I - Parent node */
+ mxml_type_t type) /* I - Node type */
+{
+ mxml_node_t *node; /* New node */
+
+
+#if DEBUG > 1
+ fprintf(stderr, "mxml_new(parent=%p, type=%d)\n", parent, type);
+#endif /* DEBUG > 1 */
+
+ /*
+ * Allocate memory for the node...
+ */
+
+ if ((node = calloc(1, sizeof(mxml_node_t))) == NULL)
+ {
+#if DEBUG > 1
+ fputs(" returning NULL\n", stderr);
+#endif /* DEBUG > 1 */
+
+ return (NULL);
+ }
+
+#if DEBUG > 1
+ fprintf(stderr, " returning %p\n", node);
+#endif /* DEBUG > 1 */
+
+ /*
+ * Set the node type...
+ */
+
+ node->type = type;
+ node->ref_count = 1;
+
+ /*
+ * Add to the parent if present...
+ */
+
+ if (parent)
+ mxmlAdd(parent, MXML_ADD_AFTER, MXML_ADD_TO_PARENT, node);
+
+ /*
+ * Return the new node...
+ */
+
+ return (node);
+}
+
+
+/*
+ * End of "$Id: mxml-node.c 436 2011-01-22 01:02:05Z mike $".
+ */