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-rw-r--r--src/st/croco/cr-enc-handler.c184
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diff --git a/src/st/croco/cr-enc-handler.c b/src/st/croco/cr-enc-handler.c
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+/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
+
+/*
+ * This file is part of The Croco Library
+ *
+ * Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2.1 of the GNU Lesser General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+/*
+ *$Id$
+ */
+
+/**
+ *@file
+ *The definition of the #CREncHandler class.
+ */
+
+#include "cr-enc-handler.h"
+#include "cr-utils.h"
+
+#include <string.h>
+
+struct CREncAlias {
+ const gchar *name;
+ enum CREncoding encoding;
+};
+
+static struct CREncAlias gv_default_aliases[] = {
+ {"UTF-8", CR_UTF_8},
+ {"UTF_8", CR_UTF_8},
+ {"UTF8", CR_UTF_8},
+ {"UTF-16", CR_UTF_16},
+ {"UTF_16", CR_UTF_16},
+ {"UTF16", CR_UTF_16},
+ {"UCS1", CR_UCS_1},
+ {"UCS-1", CR_UCS_1},
+ {"UCS_1", CR_UCS_1},
+ {"ISO-8859-1", CR_UCS_1},
+ {"ISO_8859-1", CR_UCS_1},
+ {"UCS-1", CR_UCS_1},
+ {"UCS_1", CR_UCS_1},
+ {"UCS4", CR_UCS_4},
+ {"UCS-4", CR_UCS_4},
+ {"UCS_4", CR_UCS_4},
+ {"ASCII", CR_ASCII},
+ {0, 0}
+};
+
+static CREncHandler gv_default_enc_handlers[] = {
+ {CR_UCS_1, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1,
+ cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1},
+
+ {CR_ISO_8859_1, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1,
+ cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1},
+
+ {CR_ASCII, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1,
+ cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1},
+
+ {0, NULL, NULL, NULL, NULL}
+};
+
+/**
+ * cr_enc_handler_get_instance:
+ *@a_enc: the encoding of the Handler.
+ *
+ *Gets the instance of encoding handler.
+ *This function implements a singleton pattern.
+ *
+ *Returns the instance of #CREncHandler.
+ */
+CREncHandler *
+cr_enc_handler_get_instance (enum CREncoding a_enc)
+{
+ gulong i = 0;
+
+ for (i = 0; gv_default_enc_handlers[i].encoding; i++) {
+ if (gv_default_enc_handlers[i].encoding == a_enc) {
+ return (CREncHandler *) & gv_default_enc_handlers[i];
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * cr_enc_handler_resolve_enc_alias:
+ *@a_alias_name: the encoding name.
+ *@a_enc: output param. The returned encoding type
+ *or 0 if the alias is not supported.
+ *
+ *Given an encoding name (called an alias name)
+ *the function returns the matching encoding type.
+ *
+ *Returns CR_OK upon successful completion, an error code otherwise.
+ */
+enum CRStatus
+cr_enc_handler_resolve_enc_alias (const guchar * a_alias_name,
+ enum CREncoding *a_enc)
+{
+ gulong i = 0;
+ guchar *alias_name_up = NULL;
+ enum CRStatus status = CR_ENCODING_NOT_FOUND_ERROR;
+
+ g_return_val_if_fail (a_alias_name != NULL, CR_BAD_PARAM_ERROR);
+
+ alias_name_up = (guchar *) g_ascii_strup ((const gchar *) a_alias_name, -1);
+
+ for (i = 0; gv_default_aliases[i].name; i++) {
+ if (!strcmp (gv_default_aliases[i].name, (const gchar *) alias_name_up)) {
+ *a_enc = gv_default_aliases[i].encoding;
+ status = CR_OK;
+ break;
+ }
+ }
+
+ return status;
+}
+
+/**
+ * cr_enc_handler_convert_input:
+ *@a_this: the current instance of #CREncHandler.
+ *@a_in: the input buffer to convert.
+ *@a_in_len: in/out parameter. The len of the input
+ *buffer to convert. After return, contains the number of
+ *bytes actually consumed.
+ *@a_out: output parameter. The converted output buffer.
+ *Must be freed by the buffer.
+ *@a_out_len: output parameter. The length of the output buffer.
+ *
+ *Converts a raw input buffer into an utf8 buffer.
+ *
+ *Returns CR_OK upon successful completion, an error code otherwise.
+ */
+enum CRStatus
+cr_enc_handler_convert_input (CREncHandler * a_this,
+ const guchar * a_in,
+ gulong * a_in_len,
+ guchar ** a_out, gulong * a_out_len)
+{
+ enum CRStatus status = CR_OK;
+
+ g_return_val_if_fail (a_this && a_in && a_in_len && a_out,
+ CR_BAD_PARAM_ERROR);
+
+ if (a_this->decode_input == NULL)
+ return CR_OK;
+
+ if (a_this->enc_str_len_as_utf8) {
+ status = a_this->enc_str_len_as_utf8 (a_in,
+ &a_in[*a_in_len - 1],
+ a_out_len);
+
+ g_return_val_if_fail (status == CR_OK, status);
+ } else {
+ *a_out_len = *a_in_len;
+ }
+
+ *a_out = g_malloc0 (*a_out_len);
+
+ status = a_this->decode_input (a_in, a_in_len, *a_out, a_out_len);
+
+ if (status != CR_OK) {
+ g_free (*a_out);
+ *a_out = NULL;
+ }
+
+ g_return_val_if_fail (status == CR_OK, status);
+
+ return CR_OK;
+}