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-rw-r--r--src/vlib/format.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/src/vlib/format.c b/src/vlib/format.c
new file mode 100644
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--- /dev/null
+++ b/src/vlib/format.c
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * format.c: generic network formatting/unformating
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vlib/vlib.h>
+
+u8 *
+format_vlib_rx_tx (u8 * s, va_list * args)
+{
+ vlib_rx_or_tx_t r = va_arg (*args, vlib_rx_or_tx_t);
+ char *t;
+
+ switch (r)
+ {
+ case VLIB_RX:
+ t = "rx";
+ break;
+ case VLIB_TX:
+ t = "tx";
+ break;
+ default:
+ t = "INVALID";
+ break;
+ }
+
+ vec_add (s, t, strlen (t));
+ return s;
+}
+
+u8 *
+format_vlib_read_write (u8 * s, va_list * args)
+{
+ vlib_rx_or_tx_t r = va_arg (*args, vlib_rx_or_tx_t);
+ char *t;
+
+ switch (r)
+ {
+ case VLIB_READ:
+ t = "read";
+ break;
+ case VLIB_WRITE:
+ t = "write";
+ break;
+ default:
+ t = "INVALID";
+ break;
+ }
+
+ vec_add (s, t, strlen (t));
+ return s;
+}
+
+/* Formats buffer data as printable ascii or as hex. */
+u8 *
+format_vlib_buffer_data (u8 * s, va_list * args)
+{
+ u8 *data = va_arg (*args, u8 *);
+ u32 n_data_bytes = va_arg (*args, u32);
+ u32 i, is_printable;
+
+ is_printable = 1;
+ for (i = 0; i < n_data_bytes && is_printable; i++)
+ {
+ u8 c = data[i];
+ if (c < 0x20)
+ is_printable = 0;
+ else if (c >= 0x7f)
+ is_printable = 0;
+ }
+
+ if (is_printable)
+ vec_add (s, data, n_data_bytes);
+ else
+ s = format (s, "%U", format_hex_bytes, data, n_data_bytes);
+
+ return s;
+}
+
+/* Enable/on => 1; disable/off => 0. */
+uword
+unformat_vlib_enable_disable (unformat_input_t * input, va_list * args)
+{
+ int *result = va_arg (*args, int *);
+ int enable;
+
+ if (unformat (input, "enable") || unformat (input, "on"))
+ enable = 1;
+ else if (unformat (input, "disable") || unformat (input, "off"))
+ enable = 0;
+ else
+ return 0;
+
+ *result = enable;
+ return 1;
+}
+
+/* rx/tx => VLIB_RX/VLIB_TX. */
+uword
+unformat_vlib_rx_tx (unformat_input_t * input, va_list * args)
+{
+ int *result = va_arg (*args, int *);
+ if (unformat (input, "rx"))
+ *result = VLIB_RX;
+ else if (unformat (input, "tx"))
+ *result = VLIB_TX;
+ else
+ return 0;
+ return 1;
+}
+
+/* Parse an int either %d or 0x%x. */
+uword
+unformat_vlib_number (unformat_input_t * input, va_list * args)
+{
+ int *result = va_arg (*args, int *);
+
+ return (unformat (input, "0x%x", result) || unformat (input, "%d", result));
+}
+
+/* Parse a-zA-Z0-9_ token and hash to value. */
+uword
+unformat_vlib_number_by_name (unformat_input_t * input, va_list * args)
+{
+ uword *hash = va_arg (*args, uword *);
+ int *result = va_arg (*args, int *);
+ uword *p;
+ u8 *token;
+ int i;
+
+ if (!unformat_user (input, unformat_token, "a-zA-Z0-9_", &token))
+ return 0;
+
+ /* Null terminate. */
+ if (vec_len (token) > 0 && token[vec_len (token) - 1] != 0)
+ vec_add1 (token, 0);
+
+ /* Check for exact match. */
+ p = hash_get_mem (hash, token);
+ if (p)
+ goto done;
+
+ /* Convert to upper case & try match. */
+ for (i = 0; i < vec_len (token); i++)
+ if (token[i] >= 'a' && token[i] <= 'z')
+ token[i] = 'A' + token[i] - 'a';
+ p = hash_get_mem (hash, token);
+
+done:
+ vec_free (token);
+ if (p)
+ *result = p[0];
+ return p != 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */