[dpdk-dev] [PATCH 04/33] app/testeventdev: add string parsing helpers

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

From: Guduri Prathyusha <gprathyusha@caviumnetworks.com>

Add a couple of help functions that will allow parsing many types of
input parameters, i.e.: bool, 16, 32, 64 bits, hex and list of cores etc.

Derived from examples/ip_pipeline/parser.h

Signed-off-by: Guduri Prathyusha <gprathyusha@caviumnetworks.com>
---
 app/test-eventdev/Makefile |   1 +
 app/test-eventdev/parser.c | 432 +++++++++++++++++++++++++++++++++++++++++++++
 app/test-eventdev/parser.h |  79 +++++++++
 3 files changed, 512 insertions(+)
 create mode 100644 app/test-eventdev/parser.c
 create mode 100644 app/test-eventdev/parser.h

diff --git a/app/test-eventdev/Makefile b/app/test-eventdev/Makefile
index 8f4fc5f45..2e552a084 100644
--- a/app/test-eventdev/Makefile
+++ b/app/test-eventdev/Makefile
@@ -40,5 +40,6 @@ CFLAGS += $(WERROR_FLAGS)
 #
 SRCS-y := evt_main.c
 SRCS-y += evt_test.c
+SRCS-y += parser.c
 
 include $(RTE_SDK)/mk/rte.app.mk
diff --git a/app/test-eventdev/parser.c b/app/test-eventdev/parser.c
new file mode 100644
index 000000000..d267447a2
--- /dev/null
+++ b/app/test-eventdev/parser.c
@@ -0,0 +1,432 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2016 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * For my_ether_aton() function:
+ *
+ * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the University of California, Berkeley nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * For inet_pton4() and inet_pton6() functions:
+ *
+ * Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <string.h>
+#include <libgen.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <stdbool.h>
+
+#include <rte_errno.h>
+#include <rte_string_fns.h>
+
+#include "parser.h"
+
+static uint32_t
+get_hex_val(char c)
+{
+	switch (c) {
+	case '0': case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '8': case '9':
+		return c - '0';
+	case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+		return c - 'A' + 10;
+	case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+		return c - 'a' + 10;
+	default:
+		return 0;
+	}
+}
+
+int
+parser_read_arg_bool(const char *p)
+{
+	p = skip_white_spaces(p);
+	int result = -EINVAL;
+
+	if (((p[0] == 'y') && (p[1] == 'e') && (p[2] == 's')) ||
+		((p[0] == 'Y') && (p[1] == 'E') && (p[2] == 'S'))) {
+		p += 3;
+		result = 1;
+	}
+
+	if (((p[0] == 'o') && (p[1] == 'n')) ||
+		((p[0] == 'O') && (p[1] == 'N'))) {
+		p += 2;
+		result = 1;
+	}
+
+	if (((p[0] == 'n') && (p[1] == 'o')) ||
+		((p[0] == 'N') && (p[1] == 'O'))) {
+		p += 2;
+		result = 0;
+	}
+
+	if (((p[0] == 'o') && (p[1] == 'f') && (p[2] == 'f')) ||
+		((p[0] == 'O') && (p[1] == 'F') && (p[2] == 'F'))) {
+		p += 3;
+		result = 0;
+	}
+
+	p = skip_white_spaces(p);
+
+	if (p[0] != '\0')
+		return -EINVAL;
+
+	return result;
+}
+
+int
+parser_read_uint64(uint64_t *value, const char *p)
+{
+	char *next;
+	uint64_t val;
+
+	p = skip_white_spaces(p);
+	if (!isdigit(*p))
+		return -EINVAL;
+
+	val = strtoul(p, &next, 10);
+	if (p == next)
+		return -EINVAL;
+
+	p = next;
+	switch (*p) {
+	case 'T':
+		val *= 1024ULL;
+		/* fall through */
+	case 'G':
+		val *= 1024ULL;
+		/* fall through */
+	case 'M':
+		val *= 1024ULL;
+		/* fall through */
+	case 'k':
+	case 'K':
+		val *= 1024ULL;
+		p++;
+		break;
+	}
+
+	p = skip_white_spaces(p);
+	if (*p != '\0')
+		return -EINVAL;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_int32(int32_t *value, const char *p)
+{
+	char *next;
+	int32_t val;
+
+	p = skip_white_spaces(p);
+	if (!isdigit(*p))
+		return -EINVAL;
+
+	val = strtol(p, &next, 10);
+	if (p == next)
+		return -EINVAL;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint64_hex(uint64_t *value, const char *p)
+{
+	char *next;
+	uint64_t val;
+
+	p = skip_white_spaces(p);
+
+	val = strtoul(p, &next, 16);
+	if (p == next)
+		return -EINVAL;
+
+	p = skip_white_spaces(next);
+	if (*p != '\0')
+		return -EINVAL;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint32(uint32_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = parser_read_uint64(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT32_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint32_hex(uint32_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = parser_read_uint64_hex(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT32_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint16(uint16_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = parser_read_uint64(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT16_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint16_hex(uint16_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = parser_read_uint64_hex(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT16_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint8(uint8_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = parser_read_uint64(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT8_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+parser_read_uint8_hex(uint8_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = parser_read_uint64_hex(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT8_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+parse_tokenize_string(char *string, char *tokens[], uint32_t *n_tokens)
+{
+	uint32_t i;
+
+	if ((string == NULL) ||
+		(tokens == NULL) ||
+		(*n_tokens < 1))
+		return -EINVAL;
+
+	for (i = 0; i < *n_tokens; i++) {
+		tokens[i] = strtok_r(string, PARSE_DELIMITER, &string);
+		if (tokens[i] == NULL)
+			break;
+	}
+
+	if ((i == *n_tokens) &&
+		(strtok_r(string, PARSE_DELIMITER, &string) != NULL))
+		return -E2BIG;
+
+	*n_tokens = i;
+	return 0;
+}
+
+int
+parse_hex_string(char *src, uint8_t *dst, uint32_t *size)
+{
+	char *c;
+	uint32_t len, i;
+
+	/* Check input parameters */
+	if ((src == NULL) ||
+		(dst == NULL) ||
+		(size == NULL) ||
+		(*size == 0))
+		return -1;
+
+	len = strlen(src);
+	if (((len & 3) != 0) ||
+		(len > (*size) * 2))
+		return -1;
+	*size = len / 2;
+
+	for (c = src; *c != 0; c++) {
+		if ((((*c) >= '0') && ((*c) <= '9')) ||
+			(((*c) >= 'A') && ((*c) <= 'F')) ||
+			(((*c) >= 'a') && ((*c) <= 'f')))
+			continue;
+
+		return -1;
+	}
+
+	/* Convert chars to bytes */
+	for (i = 0; i < *size; i++)
+		dst[i] = get_hex_val(src[2 * i]) * 16 +
+			get_hex_val(src[2 * i + 1]);
+
+	return 0;
+}
+
+int
+parse_lcores_list(bool lcores[], const char *corelist)
+{
+	int i, idx = 0;
+	int min, max;
+	char *end = NULL;
+
+	if (corelist == NULL)
+		return -1;
+	while (isblank(*corelist))
+		corelist++;
+	i = strlen(corelist);
+	while ((i > 0) && isblank(corelist[i - 1]))
+		i--;
+
+	/* Get list of lcores */
+	min = RTE_MAX_LCORE;
+	do {
+		while (isblank(*corelist))
+			corelist++;
+		if (*corelist == '\0')
+			return -1;
+		idx = strtoul(corelist, &end, 10);
+
+		if (end == NULL)
+			return -1;
+		while (isblank(*end))
+			end++;
+		if (*end == '-') {
+			min = idx;
+		} else if ((*end == ',') || (*end == '\0')) {
+			max = idx;
+			if (min == RTE_MAX_LCORE)
+				min = idx;
+			for (idx = min; idx <= max; idx++)
+				lcores[idx] = 1;
+
+			min = RTE_MAX_LCORE;
+		} else
+			return -1;
+		corelist = end + 1;
+	} while (*end != '\0');
+
+	return 0;
+}
diff --git a/app/test-eventdev/parser.h b/app/test-eventdev/parser.h
new file mode 100644
index 000000000..75a5a3b45
--- /dev/null
+++ b/app/test-eventdev/parser.h
@@ -0,0 +1,79 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __INCLUDE_PARSER_H__
+#define __INCLUDE_PARSER_H__
+
+#include <stdint.h>
+
+#define PARSE_DELIMITER				" \f\n\r\t\v"
+
+#define skip_white_spaces(pos)			\
+({						\
+	__typeof__(pos) _p = (pos);		\
+	for ( ; isspace(*_p); _p++)		\
+		;				\
+	_p;					\
+})
+
+static inline size_t
+skip_digits(const char *src)
+{
+	size_t i;
+
+	for (i = 0; isdigit(src[i]); i++)
+		;
+
+	return i;
+}
+
+int parser_read_arg_bool(const char *p);
+
+int parser_read_uint64(uint64_t *value, const char *p);
+int parser_read_uint32(uint32_t *value, const char *p);
+int parser_read_uint16(uint16_t *value, const char *p);
+int parser_read_uint8(uint8_t *value, const char *p);
+
+int parser_read_uint64_hex(uint64_t *value, const char *p);
+int parser_read_uint32_hex(uint32_t *value, const char *p);
+int parser_read_uint16_hex(uint16_t *value, const char *p);
+int parser_read_uint8_hex(uint8_t *value, const char *p);
+
+int parser_read_int32(int32_t *value, const char *p);
+
+int parse_hex_string(char *src, uint8_t *dst, uint32_t *size);
+
+int parse_tokenize_string(char *string, char *tokens[], uint32_t *n_tokens);
+
+int parse_lcores_list(bool lcores[], const char *corelist);
+#endif
-- 
2.13.0