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diff --git a/src/libical/icalparameter.c b/src/libical/icalparameter.c
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+/* -*- Mode: C -*-
+ ======================================================================
+ FILE: icalderivedparameters.{c,h}
+ CREATOR: eric 09 May 1999
+
+ $Id: icalparameter.c,v 1.15 2008-01-15 23:17:40 dothebart Exp $
+ $Locker: $
+
+
+ (C) COPYRIGHT 2000, Eric Busboom <eric@softwarestudio.org>
+ http://www.softwarestudio.org
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of either:
+
+ The LGPL as published by the Free Software Foundation, version
+ 2.1, available at: http://www.fsf.org/copyleft/lesser.html
+
+ Or:
+
+ The Mozilla Public License Version 1.0. You may obtain a copy of
+ the License at http://www.mozilla.org/MPL/
+
+ The original code is icalderivedparameters.{c,h}
+
+ Contributions from:
+ Graham Davison <g.m.davison@computer.org>
+
+ ======================================================================*/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include "icalparameter.h"
+#include "icalproperty.h"
+#include "icalerror.h"
+#include "icalmemory.h"
+#include "icalparameterimpl.h"
+
+#include <stdlib.h> /* for malloc() */
+#include <errno.h>
+#include <string.h> /* for memset() */
+
+#if defined(_MSC_VER)
+#define snprintf _snprintf
+#define strcasecmp stricmp
+#endif
+
+/* In icalderivedparameter */
+icalparameter* icalparameter_new_from_value_string(icalparameter_kind kind,const char* val);
+
+
+struct icalparameter_impl* icalparameter_new_impl(icalparameter_kind kind)
+{
+ struct icalparameter_impl* v;
+
+ if ( ( v = (struct icalparameter_impl*)
+ malloc(sizeof(struct icalparameter_impl))) == 0) {
+ icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+ return 0;
+ }
+
+ strcpy(v->id,"para");
+
+ v->kind = kind;
+ v->size = 0;
+ v->string = 0;
+ v->x_name = 0;
+ v->parent = 0;
+ v->data = 0;
+
+ return v;
+}
+
+icalparameter*
+icalparameter_new (icalparameter_kind kind)
+{
+ struct icalparameter_impl* v = icalparameter_new_impl(kind);
+
+ return (icalparameter*) v;
+
+}
+
+void
+icalparameter_free (icalparameter* param)
+{
+
+/* HACK. This always triggers, even when parameter is non-zero
+ icalerror_check_arg_rv((parameter==0),"parameter");*/
+
+
+#ifdef ICAL_FREE_ON_LIST_IS_ERROR
+ icalerror_assert( (param->parent ==0),"Tried to free a parameter that is still attached to a component. ");
+
+#else
+ if(param->parent !=0){
+ return;
+ }
+#endif
+
+
+ if (param->string != 0){
+ free ((void*)param->string);
+ }
+
+ if (param->x_name != 0){
+ free ((void*)param->x_name);
+ }
+
+ memset(param,0,sizeof(param));
+
+ param->parent = 0;
+ param->id[0] = 'X';
+ free(param);
+}
+
+
+
+icalparameter*
+icalparameter_new_clone(icalparameter* old)
+{
+ struct icalparameter_impl *new;
+
+ new = icalparameter_new_impl(old->kind);
+
+ icalerror_check_arg_rz((old!=0),"param");
+
+ if (new == 0){
+ return 0;
+ }
+
+ memcpy(new,old,sizeof(struct icalparameter_impl));
+
+ if (old->string != 0){
+ new->string = icalmemory_strdup(old->string);
+ if (new->string == 0){
+ icalparameter_free(new);
+ return 0;
+ }
+ }
+
+ if (old->x_name != 0){
+ new->x_name = icalmemory_strdup(old->x_name);
+ if (new->x_name == 0){
+ icalparameter_free(new);
+ return 0;
+ }
+ }
+
+ return new;
+}
+
+icalparameter* icalparameter_new_from_string(const char *str)
+{
+ char* eq;
+ char* cpy;
+ icalparameter_kind kind;
+ icalparameter *param;
+
+ icalerror_check_arg_rz(str != 0,"str");
+
+ cpy = icalmemory_strdup(str);
+
+ if (cpy == 0){
+ icalerror_set_errno(ICAL_NEWFAILED_ERROR);
+ return 0;
+ }
+
+ eq = strchr(cpy,'=');
+
+ if(eq == 0){
+ icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR);
+ free(cpy);
+ return 0;
+ }
+
+ *eq = '\0';
+
+ eq++;
+
+ kind = icalparameter_string_to_kind(cpy);
+
+ if(kind == ICAL_NO_PARAMETER){
+ icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR);
+ free(cpy);
+ return 0;
+ }
+
+ param = icalparameter_new_from_value_string(kind,eq);
+
+ if(kind == ICAL_X_PARAMETER){
+ icalparameter_set_xname(param,cpy);
+ } else if(kind == ICAL_IANA_PARAMETER) {
+ icalparameter_set_iana_name(param, cpy);
+ }
+
+ free(cpy);
+
+ return param;
+
+}
+
+char*
+icalparameter_as_ical_string(icalparameter* param)
+{
+ char *buf;
+ buf = icalparameter_as_ical_string_r(param);
+ icalmemory_add_tmp_buffer(buf);
+ return buf;
+}
+
+
+/**
+ * Return a string representation of the parameter according to RFC2445.
+ *
+ * param = param-name "=" param-value
+ * param-name = iana-token / x-token
+ * param-value = paramtext /quoted-string
+ * paramtext = *SAFE-SHARE
+ * quoted-string= DQUOTE *QSAFE-CHARE DQUOTE
+ * QSAFE-CHAR = any character except CTLs and DQUOTE
+ * SAFE-CHAR = any character except CTLs, DQUOTE. ";", ":", ","
+ */
+char*
+icalparameter_as_ical_string_r(icalparameter* param)
+{
+ size_t buf_size = 1024;
+ char* buf;
+ char* buf_ptr;
+ const char *kind_string;
+
+ icalerror_check_arg_rz( (param!=0), "parameter");
+
+ /* Create new buffer that we can append names, parameters and a
+ * value to, and reallocate as needed.
+ */
+
+ buf = icalmemory_new_buffer(buf_size);
+ buf_ptr = buf;
+
+ if(param->kind == ICAL_X_PARAMETER) {
+ icalmemory_append_string(&buf, &buf_ptr, &buf_size,
+ icalparameter_get_xname(param));
+ } else if (param->kind == ICAL_IANA_PARAMETER) {
+ icalmemory_append_string(&buf, &buf_ptr, &buf_size,
+ icalparameter_get_iana_name(param));
+ } else {
+
+ kind_string = icalparameter_kind_to_string(param->kind);
+
+ if (param->kind == ICAL_NO_PARAMETER ||
+ param->kind == ICAL_ANY_PARAMETER ||
+ kind_string == 0)
+ {
+ icalerror_set_errno(ICAL_BADARG_ERROR);
+ free(buf);
+ return 0;
+ }
+
+
+ /* Put the parameter name into the string */
+ icalmemory_append_string(&buf, &buf_ptr, &buf_size, kind_string);
+
+ }
+
+ icalmemory_append_string(&buf, &buf_ptr, &buf_size, "=");
+
+ if(param->string !=0){
+ int qm = 0;
+
+ /* Encapsulate the property in quotes if necessary */
+ if (strpbrk(param->string, ";:,") != 0) {
+ icalmemory_append_char (&buf, &buf_ptr, &buf_size, '"');
+ qm = 1;
+ }
+ icalmemory_append_string(&buf, &buf_ptr, &buf_size, param->string);
+ if (qm == 1) {
+ icalmemory_append_char (&buf, &buf_ptr, &buf_size, '"');
+ }
+ } else if (param->data != 0){
+ const char* str = icalparameter_enum_to_string(param->data);
+ icalmemory_append_string(&buf, &buf_ptr, &buf_size, str);
+ } else {
+ icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR);
+ free(buf);
+ return 0;
+ }
+
+ return buf;
+}
+
+
+int
+icalparameter_is_valid (icalparameter* parameter);
+
+
+icalparameter_kind
+icalparameter_isa (icalparameter* parameter)
+{
+ if(parameter == 0){
+ return ICAL_NO_PARAMETER;
+ }
+
+ return parameter->kind;
+}
+
+
+int
+icalparameter_isa_parameter (void* parameter)
+{
+ struct icalparameter_impl *impl = (struct icalparameter_impl *)parameter;
+
+ if (parameter == 0){
+ return 0;
+ }
+
+ if (strcmp(impl->id,"para") == 0) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+
+void
+icalparameter_set_xname (icalparameter* param, const char* v)
+{
+ icalerror_check_arg_rv( (param!=0),"param");
+ icalerror_check_arg_rv( (v!=0),"v");
+
+ if (param->x_name != 0){
+ free((void*)param->x_name);
+ }
+
+ param->x_name = icalmemory_strdup(v);
+
+ if (param->x_name == 0){
+ errno = ENOMEM;
+ }
+
+}
+
+const char*
+icalparameter_get_xname (icalparameter* param)
+{
+ icalerror_check_arg_rz( (param!=0),"param");
+
+ return param->x_name;
+}
+
+void
+icalparameter_set_xvalue (icalparameter* param, const char* v)
+{
+ icalerror_check_arg_rv( (param!=0),"param");
+ icalerror_check_arg_rv( (v!=0),"v");
+
+ if (param->string != 0){
+ free((void*)param->string);
+ }
+
+ param->string = icalmemory_strdup(v);
+
+ if (param->string == 0){
+ errno = ENOMEM;
+ }
+
+}
+
+const char*
+icalparameter_get_xvalue (icalparameter* param)
+{
+ icalerror_check_arg_rz( (param!=0),"param");
+
+ return param->string;
+}
+
+void icalparameter_set_iana_value (icalparameter* param, const char* v)
+{
+ icalparameter_set_xvalue(param, v);
+}
+
+const char* icalparameter_get_iana_value(icalparameter* param)
+{
+ return icalparameter_get_xvalue(param);
+}
+
+void icalparameter_set_iana_name (icalparameter* param, const char* v)
+{
+ icalparameter_set_xname(param, v);
+}
+
+const char* icalparameter_get_iana_name (icalparameter* param)
+{
+ return icalparameter_get_xname(param);
+}
+
+void icalparameter_set_parent(icalparameter* param,
+ icalproperty* property)
+{
+ icalerror_check_arg_rv( (param!=0),"param");
+
+ param->parent = property;
+}
+
+icalproperty* icalparameter_get_parent(icalparameter* param)
+{
+ icalerror_check_arg_rz( (param!=0),"param");
+
+ return param->parent;
+}
+
+/* returns 1 if parameters have same name in ICAL, otherwise 0 */
+int icalparameter_has_same_name(icalparameter* param1, icalparameter* param2)
+{
+ icalparameter_kind kind1;
+ icalparameter_kind kind2;
+ const char *name1;
+ const char *name2;
+
+ icalerror_check_arg_rz( (param1!=0),"param1");
+ icalerror_check_arg_rz( (param2!=0),"param2");
+
+ kind1 = icalparameter_isa(param1);
+ kind2 = icalparameter_isa(param2);
+
+ if (kind1 != kind2)
+ return 0;
+
+ if (kind1 == ICAL_X_PARAMETER) {
+ name1 = icalparameter_get_xname(param1);
+ name2 = icalparameter_get_xname(param2);
+ if (strcasecmp(name1, name2) != 0)
+ return 0;
+ } else if (kind1 == ICAL_IANA_PARAMETER) {
+ name1 = icalparameter_get_iana_name(param1);
+ name2 = icalparameter_get_iana_name(param2);
+ if (strcasecmp(name1, name2) != 0)
+ return 0;
+ }
+ return 1;
+}
+
+/* Everything below this line is machine generated. Do not edit. */
+/* ALTREP */