| /* |
| * "$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 $". |
| */ |