diff options
Diffstat (limited to 'usr/src/lib/libcommputil/common/commp_util.c')
| -rw-r--r-- | usr/src/lib/libcommputil/common/commp_util.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/usr/src/lib/libcommputil/common/commp_util.c b/usr/src/lib/libcommputil/common/commp_util.c new file mode 100644 index 0000000000..8ed3464822 --- /dev/null +++ b/usr/src/lib/libcommputil/common/commp_util.c @@ -0,0 +1,220 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +/* + * Helper functions to skip white spaces, find tokens, find separators and free + * memory. + */ + +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> + +#include "commp_util.h" + + +/* + * Skip to the next non-whitespace + */ +int +commp_skip_white_space(const char **begin, const char *end) +{ + while (*begin < end) { + if (!isspace(**begin)) + return (0); + (*begin)++; + } + return (1); +} + +/* + * Finds the token in the char buffer. *current will be pointing to the + * token when function returns. If the char buffer has leading token, + * it returns 1. + */ +int +commp_find_token(const char **begin, const char **current, const char *end, + char token, boolean_t last) +{ + *current = *begin; + while (*current < end) { + if (!last && (**current == token)) + break; + else if (isspace(**current)) + return (1); + (*current)++; + } + /* Checks for leading white space */ + if (*current == *begin) + return (1); + else + return (0); +} + +/* + * atoi function + */ +int +commp_atoi(const char *begin, const char *end, int *num) +{ + boolean_t num_found = B_FALSE; + + *num = 0; + while (begin < end) { + if (isdigit(*begin)) { + *num = (*num * 10) + (*begin - '0'); + num_found = B_TRUE; + begin++; + } else { + break; + } + } + if (!num_found || (begin != end)) + return (EINVAL); + return (0); +} + +/* + * Given a string converts it to unsigned long long int. + */ +int +commp_strtoull(const char *begin, const char *end, uint64_t *num) +{ + boolean_t num_found = B_FALSE; + + *num = 0; + while (begin < end) { + if (isdigit(*begin)) { + *num = (*num * 10) + (*begin - '0'); + num_found = B_TRUE; + begin++; + } else { + break; + } + } + if (!num_found || (begin != end)) + return (EINVAL); + return (0); +} + +/* + * Given a string converts it to unsigned byte + */ +int +commp_strtoub(const char *begin, const char *end, uint8_t *num) +{ + boolean_t num_found = B_FALSE; + + *num = 0; + while (begin < end) { + if (isdigit(*begin)) { + *num = (*num * 10) + (*begin - '0'); + num_found = B_TRUE; + begin++; + } else { + break; + } + } + if (!num_found || (begin != end)) + return (EINVAL); + return (0); +} + +/* + * Given a string converts it to unsigned int + */ +int +commp_atoui(const char *begin, const char *end, uint_t *num) +{ + boolean_t num_found = B_FALSE; + + *num = 0; + while (begin < end) { + if (isdigit(*begin)) { + *num = (*num * 10) + (*begin - '0'); + num_found = B_TRUE; + begin++; + } else { + break; + } + } + if (!num_found || (begin != end)) + return (EINVAL); + return (0); +} + +/* + * allocates memory and copies string to new memory + */ +int +commp_add_str(char **dest, const char *src, int len) +{ + if (len == 0) + return (EINVAL); + (*dest) = calloc(1, len + 1); + if (*dest == NULL) + return (ENOMEM); + (void) strncpy(*dest, src, len); + return (0); +} + +/* + * This function converts strings like "5d" to equivalent time in secs. + * For eg. 1h = 3600, 10d = 86400 + */ +int +commp_time_to_secs(const char *begin, const char *end, uint64_t *num) +{ + uint_t factor = 0; + + if (!isdigit(*(end - 1))) { + switch (*(end - 1)) { + case 'd': + factor = COMMP_SECS_IN_DAY; + break; + case 'h': + factor = COMMP_SECS_IN_HOUR; + break; + case 'm': + factor = COMMP_SECS_IN_MIN; + break; + case 's': + factor = 1; + break; + default: + return (EINVAL); + } + --end; + } + if (commp_strtoull(begin, end, num) != 0) + return (EINVAL); + if (factor != 0) + (*num) = (*num) * factor; + return (0); +} |