/*-
* BSD LICENSE
- *
+ *
* Copyright(c) 2010-2014 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
* * 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
/**
* @file
*
- * Definitions of warnings for use of various insecure functions
+ * String-related functions as replacement for libc equivalents
*/
#ifndef _RTE_STRING_FNS_H_
extern "C" {
#endif
-#include <stdio.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <errno.h>
-
-/**
- * Safer version of snprintf that writes up to buflen characters to
- * the output buffer and ensures that the resultant string is null-terminated,
- * that is, it writes at most buflen-1 actual string characters to buffer. The
- * return value is the number of characters which should be written to the
- * buffer, so string truncation can be detected by the caller by checking if
- * the return value is greater than or equal to the buflen.
- *
- * @param buffer
- * The buffer into which the output is to be written
- *
- * @param buflen
- * The size of the output buffer
- *
- * @param format
- * The format string to be printed to the buffer
- *
- * @return
- * The number of characters written to the buffer, or if the string has been
- * truncated, the number of characters which would have been written had the
- * buffer been sufficiently big.
- *
- */
-static inline int
-rte_snprintf(char *buffer, int buflen, const char *format, ...)
-{
- int len;
- va_list ap;
-
- if (buffer == NULL && buflen != 0)
- goto einval_error;
- if (format == NULL) {
- if (buflen > 0)
- buffer[0] = '\0';
- goto einval_error;
- }
-
- va_start(ap, format);
- len = vsnprintf(buffer, buflen, format, ap);
- va_end(ap);
- if (len >= buflen && buflen > 0)
- buffer[buflen - 1] = '\0';
-
- return len;
-
-einval_error:
- errno = EINVAL;
- return -1;
-}
-
-
/**
* Takes string "string" parameter and splits it at character "delim"
* up to maxtokens-1 times - to give "maxtokens" resulting tokens. Like
* strtok or strsep functions, this modifies its input string, by replacing
- * instances of "delim" with '\0'. All resultant tokens are returned in the
+ * instances of "delim" with '\\0'. All resultant tokens are returned in the
* "tokens" array which must have enough entries to hold "maxtokens".
*
* @param string
* @return
* The number of tokens in the tokens array.
*/
-static inline int
+int
rte_strsplit(char *string, int stringlen,
- char **tokens, int maxtokens, char delim)
-{
- int i, tok = 0;
- int tokstart = 1; /* first token is right at start of string */
-
- if (string == NULL || tokens == NULL)
- goto einval_error;
-
- for (i = 0; i < stringlen; i++) {
- if (string[i] == '\0' || tok >= maxtokens)
- break;
- if (tokstart) {
- tokstart = 0;
- tokens[tok++] = &string[i];
- }
- if (string[i] == delim) {
- string[i] = '\0';
- tokstart = 1;
- }
- }
- return tok;
-
-einval_error:
- errno = EINVAL;
- return -1;
-}
+ char **tokens, int maxtokens, char delim);
#ifdef __cplusplus
}
#endif
-
#endif /* RTE_STRING_FNS_H */