-/* $Id$ */
-
/* str.h - XBT string related functions. */
-/* Copyright (c) 2004-7, Martin Quinson, Arnaud Legrand and Cherier Malek. */
-/* All rights reserved. */
+/* Copyright (c) 2007-2017. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#ifndef XBT_STR_H
#define XBT_STR_H
-#include <stdarg.h> /* va_* */
-#include "xbt/misc.h"
+#include "xbt/dict.h"
#include "xbt/dynar.h"
-#include <stdio.h> /* FILE for getline */
+#include "xbt/misc.h"
+
+#include <stdarg.h> /* va_* */
+#include <stdio.h> /* FILE */
SG_BEGIN_DECL()
/** @addtogroup XBT_str
* @brief String manipulation functions
- *
- * This module defines several string related functions. We redefine some quite classical
- * functions on the platforms were they are not nativaly defined (such as getline() or
- * asprintf()), while some other are a bit more exotic.
+ *
+ * This module defines several string related functions. Looking at the diversity of string manipulation functions that
+ * are provided, you can see that several SimGrid core developers actually like Perl.
* @{
*/
-
-/* snprintf related functions */
-/** @brief print to allocated string (reimplemented when not provided by the system)
- *
- * The functions asprintf() and vasprintf() are analogues of
- * sprintf() and vsprintf(), except that they allocate a string large
- * enough to hold the output including the terminating null byte, and
- * return a pointer to it via the first parameter. This pointer
- * should be passed to free(3) to release the allocated storage when
- * it is no longer needed.
- */
-XBT_PUBLIC(int) asprintf (char **ptr, const char *fmt, /*args*/ ...) _XBT_GNUC_PRINTF(2,3);
-/** @brief print to allocated string (reimplemented when not provided by the system)
- *
- * See asprintf()
- */
-XBT_PUBLIC(int) vasprintf (char **ptr, const char *fmt, va_list ap);
-/** @brief print to allocated string
- *
- * Works just like asprintf(), but returns a pointer to the newly created string
- */
-XBT_PUBLIC(char*) bprintf (const char*fmt, ...) _XBT_GNUC_PRINTF(1,2);
-
-/* the gettext function. It gets redefined here only if not yet available */
-#if !defined(__USE_GNU) || defined(DOXYGEN)
-XBT_PUBLIC(long) getline(char **lineptr, size_t *n, FILE *stream);
-#endif
-
-/* Trim related functions */
-XBT_PUBLIC(void) xbt_str_rtrim(char* s, const char* char_list);
-XBT_PUBLIC(void) xbt_str_ltrim( char* s, const char* char_list);
-XBT_PUBLIC(void) xbt_str_trim(char* s, const char* char_list);
XBT_PUBLIC(xbt_dynar_t) xbt_str_split(const char *s, const char *sep);
XBT_PUBLIC(xbt_dynar_t) xbt_str_split_quoted(const char *s);
-XBT_PUBLIC(char *) xbt_str_join(xbt_dynar_t dynar, const char *sep);
+XBT_PUBLIC(xbt_dynar_t) xbt_str_split_quoted_in_place(char *s);
-/* */
-XBT_PUBLIC(void) xbt_str_strip_spaces(char *);
-XBT_PUBLIC(char *) xbt_str_diff(char *a, char *b);
+XBT_PUBLIC(char *) xbt_str_join_array(const char *const *strs, const char *sep);
-/** @brief Classical alias to (char*)
- *
- * This of almost no use, beside cosmetics and the GRAS parsing macro (see \ref GRAS_dd_auto).
- */
-typedef char *xbt_string_t;
-
-/**@}*/
+XBT_PUBLIC(long int) xbt_str_parse_int(const char* str, const char* error_msg);
+XBT_PUBLIC(double) xbt_str_parse_double(const char* str, const char* error_msg);
-SG_END_DECL()
-
-#endif /* XBT_STR_H */
+#define XBT_DJB2_HASH_FUNCTION
+//#define XBT_FNV_HASH_FUNCTION
+/**
+ * @brief Returns the hash code of a string.
+ */
+static inline unsigned int xbt_str_hash_ext(const char *str, int str_len)
+{
+#ifdef XBT_DJB2_HASH_FUNCTION
+ /* fast implementation of djb2 algorithm */
+ unsigned int hash = 5381;
+
+ while (str_len--) {
+ int c = *str++;
+ hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+ }
+# elif defined(XBT_FNV_HASH_FUNCTION)
+ unsigned int hash = 0x811c9dc5;
+ unsigned char *bp = (unsigned char *) str; /* start of buffer */
+ unsigned char *be = bp + str_len; /* beyond end of buffer */
+
+ while (bp < be) {
+ /* multiply by the 32 bit FNV magic prime mod 2^32 */
+ hash +=
+ (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) +
+ (hash << 24);
+
+ /* xor the bottom with the current octet */
+ hash ^= (unsigned int) *bp++;
+ }
+
+# else
+ unsigned int hash = 0;
+
+ while (str_len--) {
+ hash += (*str) * (*str);
+ str++;
+ }
+#endif
+ return hash;
+}
+/**
+ * @brief Returns the hash code of a string.
+ */
+static inline unsigned int xbt_str_hash(const char *str)
+{
+#ifdef XBT_DJB2_HASH_FUNCTION
+ /* fast implementation of djb2 algorithm */
+ int c;
+ unsigned int hash = 5381;
+
+ while ((c = *str++)) {
+ hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+ }
+
+# elif defined(XBT_FNV_HASH_FUNCTION)
+ unsigned int hash = 0x811c9dc5;
+
+ while (*str) {
+ /* multiply by the 32 bit FNV magic prime mod 2^32 */
+ hash += (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) + (hash << 24);
+
+ /* xor the bottom with the current byte */
+ hash ^= (unsigned int) *str++;
+ }
+
+# else
+ unsigned int hash = 0;
+
+ while (*str) {
+ hash += (*str) * (*str);
+ str++;
+ }
+#endif
+ return hash;
+}
+/**@}*/
+SG_END_DECL()
+#endif /* XBT_STR_H */
