1 /* str.h - XBT string related functions. */
3 /* Copyright (c) 2007-2015. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "xbt/dynar.h"
16 #include <stdarg.h> /* va_* */
17 #include <stdio.h> /* FILE */
20 #define strcasecmp _stricmp
25 /** @addtogroup XBT_str
26 * @brief String manipulation functions
28 * This module defines several string related functions. Looking at the diversity of string
29 * manipulation functions that are provided, you can see that several SimGrid core developers
34 /* Trim related functions */
35 XBT_PUBLIC(void) xbt_str_rtrim(char *s, const char *char_list);
36 XBT_PUBLIC(void) xbt_str_ltrim(char *s, const char *char_list);
37 XBT_PUBLIC(void) xbt_str_trim(char *s, const char *char_list);
39 XBT_PUBLIC(xbt_dynar_t) xbt_str_split(const char *s, const char *sep);
40 XBT_PUBLIC(xbt_dynar_t) xbt_str_split_quoted(const char *s);
41 XBT_PUBLIC(xbt_dynar_t) xbt_str_split_quoted_in_place(char *s);
43 XBT_PUBLIC(xbt_dynar_t) xbt_str_split_str(const char *s, const char *sep);
45 XBT_PUBLIC(char *) xbt_str_join(xbt_dynar_t dynar, const char *sep);
46 XBT_PUBLIC(char *) xbt_str_join_array(const char *const *strs, const char *sep);
49 XBT_PUBLIC(void) xbt_str_subst(char *str, char from, char to, int amount);
50 XBT_PUBLIC(char *) xbt_str_varsubst(const char *str, xbt_dict_t patterns);
53 XBT_PUBLIC(char *) xbt_str_from_file(FILE * file);
55 XBT_PUBLIC(long int) xbt_str_parse_int(const char* str, const char* error_msg);
56 XBT_PUBLIC(double) xbt_str_parse_double(const char* str, const char* error_msg);
58 #define DJB2_HASH_FUNCTION
59 //#define FNV_HASH_FUNCTION
62 * @brief Returns the hash code of a string.
64 static XBT_INLINE unsigned int xbt_str_hash_ext(const char *str, int str_len)
67 #ifdef DJB2_HASH_FUNCTION
68 /* fast implementation of djb2 algorithm */
70 unsigned int hash = 5381;
74 hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
76 # elif defined(FNV_HASH_FUNCTION)
77 unsigned int hash = 0x811c9dc5;
78 unsigned char *bp = (unsigned char *) str; /* start of buffer */
79 unsigned char *be = bp + str_len; /* beyond end of buffer */
82 /* multiply by the 32 bit FNV magic prime mod 2^32 */
84 (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) +
87 /* xor the bottom with the current octet */
88 hash ^= (unsigned int) *bp++;
92 unsigned int hash = 0;
95 hash += (*str) * (*str);
104 * @brief Returns the hash code of a string.
106 static XBT_INLINE unsigned int xbt_str_hash(const char *str)
108 #ifdef DJB2_HASH_FUNCTION
109 /* fast implementation of djb2 algorithm */
111 unsigned int hash = 5381;
113 while ((c = *str++)) {
114 hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
117 # elif defined(FNV_HASH_FUNCTION)
118 unsigned int hash = 0x811c9dc5;
121 /* multiply by the 32 bit FNV magic prime mod 2^32 */
123 (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) +
126 /* xor the bottom with the current byte */
127 hash ^= (unsigned int) *str++;
131 unsigned int hash = 0;
134 hash += (*str) * (*str);
144 #endif /* XBT_STR_H */