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-rw-r--r--xml/mxml-attr.c319
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diff --git a/xml/mxml-attr.c b/xml/mxml-attr.c
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+/*
+ * "$Id: mxml-attr.c 408 2010-09-19 05:26:46Z mike $"
+ *
+ * Attribute support code for Mini-XML, a small XML-like file parsing library.
+ *
+ * Copyright 2003-2010 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:
+ *
+ * mxmlElementDeleteAttr() - Delete an attribute.
+ * mxmlElementGetAttr() - Get an attribute.
+ * mxmlElementSetAttr() - Set an attribute.
+ * mxmlElementSetAttrf() - Set an attribute with a formatted value.
+ * mxml_set_attr() - Set or add an attribute name/value pair.
+ */
+
+/*
+ * Include necessary headers...
+ */
+
+#include "config.h"
+#include "mxml.h"
+
+
+/*
+ * Local functions...
+ */
+
+static int mxml_set_attr(mxml_node_t *node, const char *name,
+ char *value);
+
+
+/*
+ * 'mxmlElementDeleteAttr()' - Delete an attribute.
+ *
+ * @since Mini-XML 2.4@
+ */
+
+void
+mxmlElementDeleteAttr(mxml_node_t *node,/* I - Element */
+ const char *name)/* I - Attribute name */
+{
+ int i; /* Looping var */
+ mxml_attr_t *attr; /* Cirrent attribute */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlElementDeleteAttr(node=%p, name=\"%s\")\n",
+ node, name ? name : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!node || node->type != MXML_ELEMENT || !name)
+ return;
+
+ /*
+ * Look for the attribute...
+ */
+
+ for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
+ i > 0;
+ i --, attr ++)
+ {
+#ifdef DEBUG
+ printf(" %s=\"%s\"\n", attr->name, attr->value);
+#endif /* DEBUG */
+
+ if (!strcmp(attr->name, name))
+ {
+ /*
+ * Delete this attribute...
+ */
+
+ free(attr->name);
+ free(attr->value);
+
+ i --;
+ if (i > 0)
+ memmove(attr, attr + 1, i * sizeof(mxml_attr_t));
+
+ node->value.element.num_attrs --;
+ return;
+ }
+ }
+}
+
+
+/*
+ * 'mxmlElementGetAttr()' - Get an attribute.
+ *
+ * This function returns NULL if the node is not an element or the
+ * named attribute does not exist.
+ */
+
+const char * /* O - Attribute value or NULL */
+mxmlElementGetAttr(mxml_node_t *node, /* I - Element node */
+ const char *name) /* I - Name of attribute */
+{
+ int i; /* Looping var */
+ mxml_attr_t *attr; /* Cirrent attribute */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlElementGetAttr(node=%p, name=\"%s\")\n",
+ node, name ? name : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!node || node->type != MXML_ELEMENT || !name)
+ return (NULL);
+
+ /*
+ * Look for the attribute...
+ */
+
+ for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
+ i > 0;
+ i --, attr ++)
+ {
+#ifdef DEBUG
+ printf(" %s=\"%s\"\n", attr->name, attr->value);
+#endif /* DEBUG */
+
+ if (!strcmp(attr->name, name))
+ {
+#ifdef DEBUG
+ printf(" Returning \"%s\"!\n", attr->value);
+#endif /* DEBUG */
+ return (attr->value);
+ }
+ }
+
+ /*
+ * Didn't find attribute, so return NULL...
+ */
+
+#ifdef DEBUG
+ puts(" Returning NULL!\n");
+#endif /* DEBUG */
+
+ return (NULL);
+}
+
+
+/*
+ * 'mxmlElementSetAttr()' - Set an attribute.
+ *
+ * If the named attribute already exists, the value of the attribute
+ * is replaced by the new string value. The string value is copied
+ * into the element node. This function does nothing if the node is
+ * not an element.
+ */
+
+void
+mxmlElementSetAttr(mxml_node_t *node, /* I - Element node */
+ const char *name, /* I - Name of attribute */
+ const char *value) /* I - Attribute value */
+{
+ char *valuec; /* Copy of value */
+
+
+#ifdef DEBUG
+ fprintf(stderr, "mxmlElementSetAttr(node=%p, name=\"%s\", value=\"%s\")\n",
+ node, name ? name : "(null)", value ? value : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!node || node->type != MXML_ELEMENT || !name)
+ return;
+
+ if (value)
+ valuec = strdup(value);
+ else
+ valuec = NULL;
+
+ if (mxml_set_attr(node, name, valuec))
+ free(valuec);
+}
+
+
+/*
+ * 'mxmlElementSetAttrf()' - Set an attribute with a formatted value.
+ *
+ * If the named attribute already exists, the value of the attribute
+ * is replaced by the new formatted string. The formatted string value is
+ * copied into the element node. This function does nothing if the node
+ * is not an element.
+ *
+ * @since Mini-XML 2.3@
+ */
+
+void
+mxmlElementSetAttrf(mxml_node_t *node, /* I - Element node */
+ const char *name, /* I - Name of attribute */
+ const char *format,/* I - Printf-style attribute value */
+ ...) /* I - Additional arguments as needed */
+{
+ va_list ap; /* Argument pointer */
+ char *value; /* Value */
+
+
+#ifdef DEBUG
+ fprintf(stderr,
+ "mxmlElementSetAttrf(node=%p, name=\"%s\", format=\"%s\", ...)\n",
+ node, name ? name : "(null)", format ? format : "(null)");
+#endif /* DEBUG */
+
+ /*
+ * Range check input...
+ */
+
+ if (!node || node->type != MXML_ELEMENT || !name || !format)
+ return;
+
+ /*
+ * Format the value...
+ */
+
+ va_start(ap, format);
+ value = _mxml_vstrdupf(format, ap);
+ va_end(ap);
+
+ if (!value)
+ mxml_error("Unable to allocate memory for attribute '%s' in element %s!",
+ name, node->value.element.name);
+ else if (mxml_set_attr(node, name, value))
+ free(value);
+}
+
+
+/*
+ * 'mxml_set_attr()' - Set or add an attribute name/value pair.
+ */
+
+static int /* O - 0 on success, -1 on failure */
+mxml_set_attr(mxml_node_t *node, /* I - Element node */
+ const char *name, /* I - Attribute name */
+ char *value) /* I - Attribute value */
+{
+ int i; /* Looping var */
+ mxml_attr_t *attr; /* New attribute */
+
+
+ /*
+ * Look for the attribute...
+ */
+
+ for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
+ i > 0;
+ i --, attr ++)
+ if (!strcmp(attr->name, name))
+ {
+ /*
+ * Free the old value as needed...
+ */
+
+ if (attr->value)
+ free(attr->value);
+
+ attr->value = value;
+
+ return (0);
+ }
+
+ /*
+ * Add a new attribute...
+ */
+
+ if (node->value.element.num_attrs == 0)
+ attr = malloc(sizeof(mxml_attr_t));
+ else
+ attr = realloc(node->value.element.attrs,
+ (node->value.element.num_attrs + 1) * sizeof(mxml_attr_t));
+
+ if (!attr)
+ {
+ mxml_error("Unable to allocate memory for attribute '%s' in element %s!",
+ name, node->value.element.name);
+ return (-1);
+ }
+
+ node->value.element.attrs = attr;
+ attr += node->value.element.num_attrs;
+
+ if ((attr->name = strdup(name)) == NULL)
+ {
+ mxml_error("Unable to allocate memory for attribute '%s' in element %s!",
+ name, node->value.element.name);
+ return (-1);
+ }
+
+ attr->value = value;
+
+ node->value.element.num_attrs ++;
+
+ return (0);
+}
+
+
+/*
+ * End of "$Id: mxml-attr.c 408 2010-09-19 05:26:46Z mike $".
+ */
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