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Diffstat (limited to 'menuselect/mxml/mxml-attr.c')
| -rw-r--r-- | menuselect/mxml/mxml-attr.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/menuselect/mxml/mxml-attr.c b/menuselect/mxml/mxml-attr.c new file mode 100644 index 000000000..7aa7d1ba6 --- /dev/null +++ b/menuselect/mxml/mxml-attr.c @@ -0,0 +1,181 @@ +/* + * "$Id: mxml-attr.c 22267 2006-04-24 17:11:45Z kpfleming $" + * + * Attribute support code for Mini-XML, a small XML-like file parsing library. + * + * Copyright 2003-2005 by Michael Sweet. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Contents: + * + * mxmlElementGetAttr() - Get an attribute. + * mxmlElementSetAttr() - Set an attribute. + */ + +/* + * Include necessary headers... + */ + +#include "config.h" +#include "mxml.h" + + +/* + * '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 ++) + if (!strcmp(attr->name, name)) + return (attr->value); + + /* + * Didn't find attribute, so return NULL... + */ + + 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 */ +{ + int i; /* Looping var */ + mxml_attr_t *attr; /* New attribute */ + + +#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; + + /* + * 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)) + { + /* + * Replace the attribute value and return... + */ + + if (attr->value) + free(attr->value); + + if (value) + { + if ((attr->value = strdup(value)) == NULL) + mxml_error("Unable to allocate memory for attribute '%s' in element %s!", + name, node->value.element.name); + } + else + attr->value = NULL; + + return; + } + + /* + * Attribute not found, so add a new one... + */ + + 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; + } + + node->value.element.attrs = attr; + attr += node->value.element.num_attrs; + + attr->name = strdup(name); + if (value) + attr->value = strdup(value); + else + attr->value = NULL; + + if (!attr->name || (!attr->value && value)) + { + if (attr->name) + free(attr->name); + + if (attr->value) + free(attr->value); + + mxml_error("Unable to allocate memory for attribute '%s' in element %s!", + name, node->value.element.name); + + return; + } + + node->value.element.num_attrs ++; +} + + +/* + * End of "$Id: mxml-attr.c 22267 2006-04-24 17:11:45Z kpfleming $". + */ |