Commit e56aab98 authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

lib/util: add spdk_strsepq() 



Parsing function for delimited strings with embedded quotes.

Originally based on code imported from istgt.

Change-Id: I448feb53ea232048ed8c68738e12bc3660eb4235
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent c5611b26

include/spdk/string.h

+13 −0
Original line number Diff line number Diff line
@@ -54,6 +54,19 @@ char *spdk_sprintf_alloc(const char *format, ...) __attribute__((format(printf, 
 */

char *spdk_strlwr(char *s);



/**

 * Parse a delimited string with quote handling.

 *

 * \param stringp Pointer to starting location in string. *stringp will be updated to point to the

 * start of the next field, or NULL if the end of the string has been reached.

 * \param delim Null-terminated string containing the list of accepted delimiters.

 *

 * \return Pointer to beginning of the current field.

 *

 * Note that the string will be modified in place to add the string terminator to each field.

 */

char *spdk_strsepq(char **stringp, const char *delim);



#ifdef __cplusplus

}

#endif

lib/util/string.c

+66 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ 
#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <ctype.h>



#include "spdk/string.h"
@@ -100,3 +101,68 @@ spdk_strlwr(char *s) 


	return s;

}



char *

spdk_strsepq(char **stringp, const char *delim)

{

	char *p, *q, *r;

	int quoted = 0, bslash = 0;



	p = *stringp;

	if (p == NULL) {

		return NULL;

	}



	r = q = p;

	while (*q != '\0' && *q != '\n') {

		/* eat quoted characters */

		if (bslash) {

			bslash = 0;

			*r++ = *q++;

			continue;

		} else if (quoted) {

			if (quoted == '"' && *q == '\\') {

				bslash = 1;

				q++;

				continue;

			} else if (*q == quoted) {

				quoted = 0;

				q++;

				continue;

			}

			*r++ = *q++;

			continue;

		} else if (*q == '\\') {

			bslash = 1;

			q++;

			continue;

		} else if (*q == '"' || *q == '\'') {

			quoted = *q;

			q++;

			continue;

		}



		/* separator? */

		if (strchr(delim, *q) == NULL) {

			*r++ = *q++;

			continue;

		}



		/* new string */

		q++;

		break;

	}

	*r = '\0';



	/* skip tailer */

	while (*q != '\0' && strchr(delim, *q) != NULL) {

		q++;

	}

	if (*q != '\0') {

		*stringp = q;

	} else {

		*stringp = NULL;

	}



	return p;

}