1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
|
/* classes: src_files */
/* Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this software; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA */
#include <stdio.h>
#include "_scm.h"
#include "chars.h"
#include "strop.h"
#include "read.h" /*For SCM_CASE_INSENSITIVE_P*/
/* implements index if direction > 0 otherwise rindex. */
static int
scm_i_index (SCM *str, SCM chr, int direction, SCM sub_start,
SCM sub_end, const char *why)
{
unsigned char * p;
int x;
int lower;
int upper;
int ch;
SCM_ASSERT (SCM_NIMP (*str) && SCM_ROSTRINGP (*str), *str, SCM_ARG1, why);
SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG2, why);
if (sub_start == SCM_BOOL_F)
sub_start = SCM_MAKINUM (0);
SCM_ASSERT (SCM_INUMP (sub_start), sub_start, SCM_ARG3, why);
lower = SCM_INUM (sub_start);
if (lower < 0
|| lower > SCM_ROLENGTH (*str))
scm_out_of_range (why, sub_start);
if (sub_end == SCM_BOOL_F)
sub_end = SCM_MAKINUM (SCM_ROLENGTH (*str));
SCM_ASSERT (SCM_INUMP (sub_end), sub_end, SCM_ARG4, why);
upper = SCM_INUM (sub_end);
if (upper < SCM_INUM (sub_start)
|| upper > SCM_ROLENGTH (*str))
scm_out_of_range (why, sub_end);
if (direction > 0)
{
p = (unsigned char *)SCM_ROCHARS (*str) + lower;
ch = SCM_ICHR (chr);
for (x = SCM_INUM (sub_start); x < upper; ++x, ++p)
if (*p == ch)
return x;
}
else
{
p = upper - 1 + (unsigned char *)SCM_ROCHARS (*str);
ch = SCM_ICHR (chr);
for (x = upper - 1; x >= lower; --x, --p)
if (*p == ch)
return x;
}
return -1;
}
SCM_PROC(s_string_index, "string-index", 2, 2, 0, scm_string_index);
SCM
scm_string_index (SCM str, SCM chr, SCM frm, SCM to)
{
int pos;
if (frm == SCM_UNDEFINED)
frm = SCM_BOOL_F;
if (to == SCM_UNDEFINED)
to = SCM_BOOL_F;
pos = scm_i_index (&str, chr, 1, frm, to, s_string_index);
return (pos < 0
? SCM_BOOL_F
: SCM_MAKINUM (pos));
}
SCM_PROC(s_string_rindex, "string-rindex", 2, 2, 0, scm_string_rindex);
SCM
scm_string_rindex (SCM str, SCM chr, SCM frm, SCM to)
{
int pos;
if (frm == SCM_UNDEFINED)
frm = SCM_BOOL_F;
if (to == SCM_UNDEFINED)
to = SCM_BOOL_F;
pos = scm_i_index (&str, chr, -1, frm, to, s_string_rindex);
return (pos < 0
? SCM_BOOL_F
: SCM_MAKINUM (pos));
}
SCM_PROC(s_substring_move_left_x, "substring-move-left!", 5, 0, 0, scm_substring_move_x);
SCM_PROC(s_substring_move_right_x, "substring-move-right!", 5, 0, 0, scm_substring_move_x);
SCM_PROC(s_substring_move_x, "substring-move!", 5, 0, 0, scm_substring_move_x);
SCM
scm_substring_move_x (SCM str1, SCM start1, SCM end1,
SCM str2, SCM start2)
{
long s1, s2, e, len;
SCM_ASSERT (SCM_NIMP (str1) && SCM_STRINGP (str1), str1,
SCM_ARG1, s_substring_move_x);
SCM_ASSERT (SCM_INUMP (start1), start1, SCM_ARG2, s_substring_move_x);
SCM_ASSERT (SCM_INUMP (end1), end1, SCM_ARG3, s_substring_move_x);
SCM_ASSERT (SCM_NIMP (str2) && SCM_STRINGP (str2), str2,
SCM_ARG4, s_substring_move_x);
SCM_ASSERT (SCM_INUMP (start2), start2, SCM_ARG5, s_substring_move_x);
s1 = SCM_INUM (start1), s2 = SCM_INUM (start2), e = SCM_INUM (end1);
len = e - s1;
SCM_ASSERT (s1 <= SCM_LENGTH (str1) && s1 >= 0, start1,
SCM_OUTOFRANGE, s_substring_move_x);
SCM_ASSERT (s2 <= SCM_LENGTH (str2) && s2 >= 0, start2,
SCM_OUTOFRANGE, s_substring_move_x);
SCM_ASSERT (e <= SCM_LENGTH (str1) && e >= 0, end1,
SCM_OUTOFRANGE, s_substring_move_x);
SCM_ASSERT (len+s2 <= SCM_LENGTH (str2), start2,
SCM_OUTOFRANGE, s_substring_move_x);
SCM_SYSCALL(memmove((void *)(&(SCM_CHARS(str2)[s2])),
(void *)(&(SCM_CHARS(str1)[s1])),
len));
return scm_return_first(SCM_UNSPECIFIED, str1, str2);
}
SCM_PROC(s_substring_fill_x, "substring-fill!", 4, 0, 0, scm_substring_fill_x);
SCM
scm_substring_fill_x (SCM str, SCM start, SCM end, SCM fill)
{
long i, e;
char c;
SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_substring_fill_x);
SCM_ASSERT (SCM_INUMP (start), start, SCM_ARG2, s_substring_fill_x);
SCM_ASSERT (SCM_INUMP (end), end, SCM_ARG3, s_substring_fill_x);
SCM_ASSERT (SCM_ICHRP (fill), fill, SCM_ARG4, s_substring_fill_x);
i = SCM_INUM (start), e = SCM_INUM (end);c = SCM_ICHR (fill);
SCM_ASSERT (i <= SCM_LENGTH (str) && i >= 0, start,
SCM_OUTOFRANGE, s_substring_fill_x);
SCM_ASSERT (e <= SCM_LENGTH (str) && e >= 0, end,
SCM_OUTOFRANGE, s_substring_fill_x);
while (i<e) SCM_CHARS (str)[i++] = c;
return SCM_UNSPECIFIED;
}
SCM_PROC(s_string_null_p, "string-null?", 1, 0, 0, scm_string_null_p);
SCM
scm_string_null_p (str)
SCM str;
{
SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_null_p);
return (SCM_ROLENGTH (str)
? SCM_BOOL_F
: SCM_BOOL_T);
}
SCM_PROC(s_string_to_list, "string->list", 1, 0, 0, scm_string_to_list);
SCM
scm_string_to_list (str)
SCM str;
{
long i;
SCM res = SCM_EOL;
unsigned char *src;
SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_to_list);
src = SCM_ROUCHARS (str);
for (i = SCM_ROLENGTH (str)-1;i >= 0;i--) res = scm_cons ((SCM)SCM_MAKICHR (src[i]), res);
return res;
}
SCM_PROC(s_string_copy, "string-copy", 1, 0, 0, scm_string_copy);
SCM
scm_string_copy (str)
SCM str;
{
SCM_ASSERT (SCM_NIMP (str) && (SCM_STRINGP (str) || SCM_SUBSTRP (str)),
str, SCM_ARG1, s_string_copy);
return scm_makfromstr (SCM_ROCHARS (str), (scm_sizet)SCM_ROLENGTH (str), 0);
}
SCM_PROC(s_string_fill_x, "string-fill!", 2, 0, 0, scm_string_fill_x);
SCM
scm_string_fill_x (str, chr)
SCM str;
SCM chr;
{
register char *dst, c;
register long k;
SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_string_fill_x);
SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG2, s_string_fill_x);
c = SCM_ICHR (chr);
dst = SCM_CHARS (str);
for (k = SCM_LENGTH (str)-1;k >= 0;k--) dst[k] = c;
return SCM_UNSPECIFIED;
}
SCM_PROC(s_string_upcase_x, "string-upcase!", 1, 0, 0, scm_string_upcase_x);
SCM
scm_string_upcase_x (v)
SCM v;
{
register long k;
register unsigned char *cs;
SCM_ASRTGO (SCM_NIMP (v), badarg1);
k = SCM_LENGTH (v);
switch SCM_TYP7
(v)
{
case scm_tc7_string:
cs = SCM_UCHARS (v);
while (k--)
cs[k] = scm_upcase(cs[k]);
break;
default:
badarg1:scm_wta (v, (char *) SCM_ARG1, s_string_upcase_x);
}
return v;
}
SCM_PROC(s_string_upcase, "string-upcase", 1, 0, 0, scm_string_upcase);
SCM
scm_string_upcase(SCM str)
{
return scm_string_upcase_x(scm_string_copy(str));
}
SCM_PROC(s_string_downcase_x, "string-downcase!", 1, 0, 0, scm_string_downcase_x);
SCM
scm_string_downcase_x (v)
SCM v;
{
register long k;
register unsigned char *cs;
SCM_ASRTGO (SCM_NIMP (v), badarg1);
k = SCM_LENGTH (v);
switch (SCM_TYP7(v))
{
case scm_tc7_string:
cs = SCM_UCHARS (v);
while (k--)
cs[k] = scm_downcase(cs[k]);
break;
default:
badarg1:scm_wta (v, (char *) SCM_ARG1, s_string_downcase_x);
}
return v;
}
SCM_PROC(s_string_downcase, "string-downcase", 1, 0, 0, scm_string_downcase);
SCM
scm_string_downcase(SCM str)
{
SCM_ASSERT(SCM_NIMP(str) && SCM_STRINGP(str), str, SCM_ARG1, s_string_downcase);
return scm_string_downcase_x(scm_string_copy(str));
}
SCM_PROC(s_string_capitalize_x, "string-capitalize!", 1, 0, 0, scm_string_capitalize_x);
SCM
scm_string_capitalize_x (SCM s)
{
char *str;
int i, len, in_word=0;
SCM_ASSERT(SCM_NIMP(s) && SCM_STRINGP(s), s, SCM_ARG1, s_string_capitalize_x);
len = SCM_LENGTH(s);
str = SCM_CHARS(s);
for(i=0; i<len; i++) {
if(SCM_NFALSEP(scm_char_alphabetic_p(SCM_MAKICHR(str[i])))) {
if(!in_word) {
str[i] = scm_upcase(str[i]);
in_word = 1;
} else {
str[i] = scm_downcase(str[i]);
}
}
else in_word = 0;
}
return s;
}
SCM_PROC(s_string_capitalize, "string-capitalize", 1, 0, 0, scm_string_capitalize);
SCM
scm_string_capitalize(SCM s)
{
SCM_ASSERT((SCM_NIMP(s)) && (SCM_STRINGP(s)), s, SCM_ARG1, s_string_capitalize);
return scm_string_capitalize_x(scm_string_copy(s));
}
SCM_PROC(s_string_ci_to_symbol, "string-ci->symbol", 1, 0, 0, scm_string_ci_to_symbol);
SCM
scm_string_ci_to_symbol(SCM str)
{
return scm_string_to_symbol (SCM_CASE_INSENSITIVE_P
? scm_string_downcase(str)
: str);
}
void
scm_init_strop ()
{
#include "strop.x"
}
|