rte_string_fns.h File Reference

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <rte_common.h>
#include <rte_compat.h>

Go to the source code of this file.

Functions
int	rte_strsplit (char *string, int stringlen, char **tokens, int maxtokens, char delim)
ssize_t	rte_strscpy (char *dst, const char *src, size_t dsize)
static __rte_experimental const char *	rte_str_skip_leading_spaces (const char *src)
__rte_experimental size_t	rte_basename (const char *path, char *buf, size_t buflen)

Detailed Description

String-related functions as replacement for libc equivalents

Definition in file rte_string_fns.h.

Function Documentation

rte_strsplit()

int rte_strsplit	(	char *	string,
		int	stringlen,
		char **	tokens,
		int	maxtokens,
		char	delim )

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 "tokens" array which must have enough entries to hold "maxtokens".

Parameters

string	The input string to be split into tokens
stringlen	The max length of the input buffer
tokens	The array to hold the pointers to the tokens in the string
maxtokens	The number of elements in the tokens array. At most, maxtokens-1 splits of the string will be done.
delim	The character on which the split of the data will be done

Returns

The number of tokens in the tokens array.

Examples

examples/ipsec-secgw/ipsec-secgw.c, examples/l2fwd-event/main.c, examples/l2fwd-macsec/main.c, examples/l2fwd/main.c, examples/l3fwd-graph/main.c, examples/l3fwd-power/main.c, examples/l3fwd-power/perf_core.c, examples/l3fwd/main.c, examples/qos_sched/args.c, examples/qos_sched/cfg_file.c, examples/vhost/main.c, and examples/vhost_crypto/main.c.

rte_strscpy()

ssize_t rte_strscpy	(	char *	dst,
		const char *	src,
		size_t	dsize )

Copy string src to buffer dst of size dsize. At most dsize-1 chars will be copied. Always NUL-terminates, unless (dsize == 0).

Parameters

dst	The destination string.
src	The input string to be copied.
dsize	Length in bytes of the destination buffer.

Returns

The number of bytes copied (terminating NUL-byte excluded) on success. -E2BIG if the destination buffer is too small. rte_errno is set.

Examples

examples/fips_validation/fips_validation.c, and examples/vdpa/main.c.

rte_str_skip_leading_spaces()

__rte_experimental const char * rte_str_skip_leading_spaces ( const char * src )

inlinestatic

Warning

EXPERIMENTAL: this API may change without prior notice.

Search for the first non whitespace character.

Parameters

src	The input string to be analysed.

Returns

The address of the first non whitespace character.

Examples

examples/fips_validation/fips_validation.c, examples/ip_pipeline/parser.c, and examples/pipeline/cli.c.

Definition at line 142 of file rte_string_fns.h.

rte_basename()

__rte_experimental size_t rte_basename	(	const char *	path,
		char *	buf,
		size_t	buflen )

Warning

EXPERIMENTAL: this API may change without prior notice.

Provides the final component of a path, similar to POSIX basename function.

This API provides the similar behaviour on all platforms, Linux, BSD, Windows, hiding the implementation differences.

• It does not modify the input path.
• The output buffer is passed as an argument, and the result is copied into it.
• Expected output is the last component of the path, or the path itself if it does not contain a directory separator.
• If the final component is too long to fit in the output buffer, it will be truncated.
• For empty or NULL input paths, output buffer will contain the string ".".
• Supports up to PATH_MAX (BSD/Linux) or _MAX_PATH (Windows) characters in the input path.

Parameters

path	The input path string. Not modified by this function.
buf	The buffer to hold the resultant basename. Must be large enough to hold the result, otherwise basename will be truncated.
buflen	The size of the buffer in bytes.

Returns

The number of bytes that were written to buf (excluding the terminating '\0'). If the return value is >= buflen, truncation occurred. Return (size_t)-1 on error (Windows only)