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
|
/*
* This file is part of Freecell Solver. It is subject to the license terms in
* the COPYING.txt file found in the top-level directory of this distribution
* and at http://fc-solve.shlomifish.org/docs/distro/COPYING.html . No part of
* Freecell Solver, including this file, may be copied, modified, propagated,
* or distributed except according to the terms contained in the COPYING file.
*
* Copyright (c) 2000 Shlomi Fish
*/
// split_cmd_line.c: split command line arguments from a big string according
// to a subset of Bourne shell's semantics. Useful for reading command
// line arguments from files.
#include "split_cmd_line.h"
typedef struct
{
fcs_args_man args_man;
/* These fields are for internal use only. */
char *last_arg, *last_arg_ptr, *last_arg_end;
} args_man_wrapper;
void fc_solve_args_man_free(fcs_args_man *const manager)
{
const_SLOT(argc, manager);
const_SLOT(argv, manager);
for (int i = 0; i < argc; i++)
{
free(argv[i]);
}
free(argv);
manager->argc = 0;
manager->argv = NULL;
}
static inline void add_to_last_arg(
args_man_wrapper *const manager, const char c)
{
*(manager->last_arg_ptr++) = c;
if (manager->last_arg_ptr == manager->last_arg_end)
{
char *const new_last_arg = SREALLOC(manager->last_arg,
manager->last_arg_end - manager->last_arg + 1024);
manager->last_arg_ptr += new_last_arg - manager->last_arg;
manager->last_arg_end += new_last_arg - manager->last_arg + 1024;
manager->last_arg = new_last_arg;
}
}
static inline void push_args_last_arg(args_man_wrapper *const manager)
{
const int len = manager->last_arg_ptr - manager->last_arg;
char *const new_arg = SMALLOC(new_arg, len + 1);
strncpy(new_arg, manager->last_arg, len);
new_arg[len] = '\0';
manager->args_man.argv[(manager->args_man.argc)++] = new_arg;
if (!(manager->args_man.argc & (FC_SOLVE__ARGS_MAN_GROW_BY - 1)))
{
manager->args_man.argv = SREALLOC(manager->args_man.argv,
manager->args_man.argc + FC_SOLVE__ARGS_MAN_GROW_BY);
}
/* Reset last_arg_ptr so we will have an entirely new argument */
manager->last_arg_ptr = manager->last_arg;
}
static inline bool is_whitespace(const char c)
{
return ((c == ' ') || (c == '\t') || (c == '\n') || (c == '\r'));
}
static inline fcs_args_man fc_solve_args_man_alloc(void)
{
const fcs_args_man ret = {
.argc = 0, .argv = SMALLOC(ret.argv, FC_SOLVE__ARGS_MAN_GROW_BY)};
return ret;
}
fcs_args_man fc_solve_args_man_chop(const char *const string)
{
const char *s = string;
args_man_wrapper manager = {.args_man = fc_solve_args_man_alloc()};
manager.last_arg_ptr = manager.last_arg = SMALLOC(manager.last_arg, 1024);
manager.last_arg_end = manager.last_arg + 1023;
while (*s != '\0')
{
bool push_next_arg_flag = FALSE;
while (is_whitespace(*s))
{
s++;
}
if (*s == '\0')
{
break;
}
if (*s == '#')
{
/* Skip to the next line */
while ((*s != '\0') && (*s != '\n'))
{
s++;
}
continue;
}
bool should_still_loop = TRUE;
bool in_arg = FALSE;
while (should_still_loop)
{
switch (*s)
{
case ' ':
case '\t':
case '\n':
case '\0':
case '\r':
push_next_arg_flag = TRUE;
should_still_loop = FALSE;
break;
case '\\':
{
const_AUTO(next_char, *(++s));
s++;
switch (next_char)
{
case '\0':
s--;
push_next_arg_flag = TRUE;
should_still_loop = FALSE;
break;
case '\r':
case '\n':
/* Skip to the next line. */
if (!in_arg)
{
should_still_loop = FALSE;
}
break;
default:
add_to_last_arg(&manager, next_char);
break;
}
}
break;
case '\"':
in_arg = TRUE;
while (TRUE)
{
const_AUTO(c, *(++s));
switch (c)
{
case '\"':
++s;
case '\0':
goto after_quote;
case '\\':
{
const_AUTO(next_char, *(++s));
switch (next_char)
{
case '\0':
push_args_last_arg(&manager);
goto END_OF_LOOP;
case '\n':
case '\r':
/* Do nothing */
break;
case '\\':
case '\"':
add_to_last_arg(&manager, next_char);
break;
default:
add_to_last_arg(&manager, '\\');
add_to_last_arg(&manager, next_char);
break;
}
}
break;
default:
{
add_to_last_arg(&manager, c);
}
break;
}
}
after_quote:
break;
case '#':
in_arg = FALSE;
/* Skip to the next line */
while ((*s != '\0') && (*s != '\n'))
{
s++;
}
push_next_arg_flag = TRUE;
should_still_loop = FALSE;
break;
default:
in_arg = TRUE;
add_to_last_arg(&manager, *s);
s++;
break;
}
}
if (push_next_arg_flag)
{
push_args_last_arg(&manager);
if (*s == '\0')
{
break;
}
}
}
END_OF_LOOP:
if (manager.last_arg_ptr != manager.last_arg)
{
push_args_last_arg(&manager);
}
free(manager.last_arg);
return manager.args_man;
}
|
