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Diffstat (limited to 'src/vlib/format.c')
| -rw-r--r-- | src/vlib/format.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/vlib/format.c b/src/vlib/format.c new file mode 100644 index 00000000..79a4d686 --- /dev/null +++ b/src/vlib/format.c @@ -0,0 +1,196 @@ +/* + * 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: + */ |