1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2009, 2010 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "memcasecmp.h"
31 #include "xvasprintf.h"
35 void buf_reverse (char *, size_t);
36 int buf_compare_case (const char *, const char *, size_t);
37 int buf_compare_rpad (const char *, size_t, const char *, size_t);
38 void buf_copy_lpad (char *, size_t, const char *, size_t, char pad);
39 void buf_copy_rpad (char *, size_t, const char *, size_t, char pad);
40 void buf_copy_str_lpad (char *, size_t, const char *, char pad);
41 void buf_copy_str_rpad (char *, size_t, const char *, char pad);
43 int str_compare_rpad (const char *, const char *);
44 void str_copy_rpad (char *, size_t, const char *);
45 void str_copy_trunc (char *, size_t, const char *);
46 void str_copy_buf_trunc (char *, size_t, const char *, size_t);
47 void str_uppercase (char *);
48 void str_lowercase (char *);
50 bool str_format_26adic (unsigned long int number, char buffer[], size_t);
52 void *mempset (void *, int, size_t);
54 /* Common character classes for use with substring and string functions. */
56 #define CC_SPACES " \t\v\r\n"
57 #define CC_DIGITS "0123456789"
58 #define CC_XDIGITS "0123456789abcdefABCDEF"
59 #define CC_LETTERS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
60 #define CC_ALNUM CC_LETTERS CC_DIGITS
69 #define SS_EMPTY_INITIALIZER {NULL, 0}
70 #define SS_LITERAL_INITIALIZER(LITERAL) \
71 {(char *) LITERAL, (sizeof LITERAL) - 1}
74 These functions do not allocate any memory, so the substrings
75 they create should not normally be destroyed. */
76 static inline struct substring ss_empty (void);
77 static inline struct substring ss_cstr (const char *);
78 static inline struct substring ss_buffer (const char *, size_t);
79 struct substring ss_substr (struct substring, size_t start, size_t);
80 struct substring ss_head (struct substring, size_t);
81 struct substring ss_tail (struct substring, size_t);
83 /* Constructors and destructor that allocate and deallocate
86 void ss_alloc_substring (struct substring *, struct substring);
87 void ss_alloc_uninit (struct substring *, size_t);
88 void ss_realloc (struct substring *, size_t);
89 void ss_alloc_substring_pool (struct substring *, struct substring,
91 void ss_alloc_uninit_pool (struct substring *, size_t, struct pool *);
92 void ss_dealloc (struct substring *);
95 Functions that advance the beginning of a string should not be
96 used if a substring is to be deallocated. */
97 void ss_truncate (struct substring *, size_t);
98 size_t ss_rtrim (struct substring *, struct substring trim_set);
99 size_t ss_ltrim (struct substring *, struct substring trim_set);
100 void ss_trim (struct substring *, struct substring trim_set);
101 bool ss_chomp (struct substring *, char);
102 bool ss_separate (struct substring src, struct substring delimiters,
103 size_t *save_idx, struct substring *token);
104 bool ss_tokenize (struct substring src, struct substring delimiters,
105 size_t *save_idx, struct substring *token);
106 void ss_advance (struct substring *, size_t);
107 bool ss_match_byte (struct substring *, char);
108 int ss_match_byte_in (struct substring *, struct substring);
109 bool ss_match_string (struct substring *, const struct substring);
110 int ss_get_byte (struct substring *);
111 size_t ss_get_bytes (struct substring *, size_t cnt, struct substring *);
112 bool ss_get_until (struct substring *, char delimiter, struct substring *);
113 size_t ss_get_long (struct substring *, long *);
116 bool ss_is_empty (struct substring);
117 size_t ss_length (struct substring);
118 char *ss_data (struct substring);
119 char *ss_end (struct substring);
120 int ss_at (struct substring, size_t idx);
121 int ss_first (struct substring);
122 int ss_last (struct substring);
123 size_t ss_span (struct substring, struct substring skip_set);
124 size_t ss_cspan (struct substring, struct substring stop_set);
125 size_t ss_find_byte (struct substring, char);
126 int ss_compare (struct substring, struct substring);
127 int ss_compare_case (struct substring, struct substring);
128 int ss_equals (struct substring, struct substring);
129 int ss_equals_case (struct substring, struct substring);
130 size_t ss_pointer_to_position (struct substring, const char *);
131 char *ss_xstrdup (struct substring);
134 ucs4_t ss_first_mb (struct substring);
135 int ss_first_mblen (struct substring);
136 ucs4_t ss_get_mb (struct substring *);
137 ucs4_t ss_at_mb (struct substring, size_t ofs);
138 int ss_at_mblen (struct substring, size_t ofs);
140 /* Variable length strings. */
146 size_t capacity; /* Allocated capacity, not including one
147 extra byte allocated for null terminator. */
150 #define DS_EMPTY_INITIALIZER {SS_EMPTY_INITIALIZER, 0}
152 /* Constructors, destructors. */
153 void ds_init_empty (struct string *);
154 void ds_init_string (struct string *, const struct string *);
155 void ds_init_substring (struct string *, struct substring);
156 void ds_init_cstr (struct string *, const char *);
157 void ds_destroy (struct string *);
158 void ds_swap (struct string *, struct string *);
162 void ds_register_pool (struct string *, struct pool *);
163 void ds_unregister_pool (struct string *, struct pool *);
166 void ds_assign_string (struct string *, const struct string *);
167 void ds_assign_substring (struct string *, struct substring);
168 void ds_assign_cstr (struct string *, const char *);
170 /* Shrink, extend. */
171 void ds_clear (struct string *);
172 void ds_extend (struct string *, size_t);
173 void ds_shrink (struct string *);
174 void ds_truncate (struct string *, size_t);
176 /* Padding, trimming. */
177 size_t ds_rtrim (struct string *, struct substring trim_set);
178 size_t ds_ltrim (struct string *, struct substring trim_set);
179 size_t ds_trim (struct string *, struct substring trim_set);
180 bool ds_chomp (struct string *, char);
181 bool ds_separate (const struct string *src, struct substring delimiters,
182 size_t *save_idx, struct substring *token);
183 bool ds_tokenize (const struct string *src, struct substring delimiters,
184 size_t *save_idx, struct substring *token);
185 void ds_rpad (struct string *, size_t length, char pad);
186 void ds_set_length (struct string *, size_t new_length, char pad);
187 void ds_remove (struct string *, size_t start, size_t n);
189 /* Extracting substrings. */
190 struct substring ds_ss (const struct string *);
191 struct substring ds_substr (const struct string *, size_t start, size_t);
192 struct substring ds_head (const struct string *, size_t);
193 struct substring ds_tail (const struct string *, size_t);
196 bool ds_is_empty (const struct string *);
197 size_t ds_length (const struct string *);
198 char *ds_data (const struct string *);
199 char *ds_end (const struct string *);
200 int ds_at (const struct string *, size_t idx);
201 int ds_first (const struct string *);
202 int ds_last (const struct string *);
203 size_t ds_span (const struct string *, struct substring skip_set);
204 size_t ds_cspan (const struct string *, struct substring stop_set);
205 size_t ds_find_byte (const struct string *, char);
206 int ds_compare (const struct string *, const struct string *);
207 size_t ds_pointer_to_position (const struct string *, const char *);
208 char *ds_xstrdup (const struct string *);
210 size_t ds_capacity (const struct string *);
211 char *ds_cstr (const struct string *);
212 char *ds_steal_cstr (struct string *);
215 bool ds_read_line (struct string *, FILE *, size_t max_length);
216 bool ds_read_config_line (struct string *, int *line_number, FILE *);
217 bool ds_read_stream (struct string *, size_t size, size_t cnt, FILE *stream);
220 void ds_put_byte (struct string *, int ch);
221 void ds_put_byte_multiple (struct string *, int ch, size_t);
222 void ds_put_cstr (struct string *, const char *);
223 void ds_put_substring (struct string *, struct substring);
224 void ds_put_vformat (struct string *st, const char *, va_list)
225 PRINTF_FORMAT (2, 0);
226 void ds_put_format (struct string *, const char *, ...)
227 PRINTF_FORMAT (2, 3);
228 char *ds_put_uninit (struct string *st, size_t incr);
231 /* calls relocate from gnulib on ST */
232 void ds_relocate (struct string *st);
235 void u8_buf_copy_rpad (uint8_t *dst, size_t dst_size,
236 const uint8_t *src, size_t src_size,
248 /* Returns a substring whose contents are the given C-style
250 static inline struct substring
251 ss_cstr (const char *cstr)
253 return ss_buffer (cstr, strlen (cstr));
256 /* Returns a substring whose contents are the CNT characters in
258 static inline struct substring
259 ss_buffer (const char *buffer, size_t cnt)
262 ss.string = (char *) buffer;