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
|
/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
static int
getn(const char *file_part1, size_t file_part1_len, const char *file_part2,
struct libfonts_rendering_settings *settings, struct libfonts_context *ctx)
{
size_t file_part2_len = strlen(file_part2);
char *path;
int fd;
ssize_t len;
char *line, *buf = NULL;
size_t size = 0, off = 0, avail = 0;
char *value;
unsigned int found_fields = 0;
size_t lineno = 0;
if (file_part1_len > SIZE_MAX - file_part2_len - 1)
goto enomem;
path = malloc(file_part1_len + file_part2_len + 1);
if (!path) {
enomem:
errno = ENOMEM;
return -1;
}
memcpy(path, file_part1, file_part1_len);
memcpy(&path[file_part1_len], file_part2, file_part2_len + 1);
open_again:
fd = open(path, O_RDONLY);
if (fd < 0) {
switch (errno) {
case EINTR:
goto open_again;
case EMFILE:
case ENFILE:
case ENOMEM:
case ENOSPC:
free(path);
return -1;
case EFBIG:
case EOVERFLOW:
case EISDIR:
case ELOOP:
case ENODEV:
case ENOTDIR:
case ENXIO:
warning(ctx, errno, "libfonts_get_default_rendering_settings", "failed to open %s:", path);
goto out;
default:
goto out;
}
}
for (;;) {
len = libfonts_getline__(fd, &line, &buf, &size, &off, &avail);
if (len < 0) {
if (errno == EINTR)
continue;
free(buf);
free(path);
close(fd);
return -1;
}
if (!len)
break;
line[len -= 1] = '\0';
lineno++;
while (isblank(*line))
line++;
if (!*line || *line == '#')
continue;
while (len && isblank(line[len - 1]))
len -= 1;
line[len] = '\0';
value = libfonts_confsplit__(line);
if (!value) {
warning(ctx, 0, "libfonts_get_default_rendering_settings", "bad line in %s at line %zu", path, lineno);
continue;
}
#define X(INDEX, CONFNAME, CNAME, DEFVAL, PARSER)\
if (!strcmp(line, CONFNAME)) {\
if (found_fields & (1U << INDEX)) {\
warning(ctx, 0, "libfonts_get_default_rendering_settings",\
"duplicate definition in %s at line %zu", path, lineno); \
}\
found_fields |= (1U << INDEX);\
if (!PARSER(&settings->CNAME, value)) {\
warning(ctx, 0, "libfonts_get_default_rendering_settings",\
"invalid value in %s at line %zu: %s", path, lineno, value);\
}\
} else
LIST_RENDERING_SETTINGS(X,) {
warning(ctx, 0, "libfonts_get_default_rendering_settings",\
"bad definition in %s at line %zu: %s", path, lineno, line);\
}
#undef X
}
free(buf);
close(fd);
out:
free(path);
return 1;
}
static int
get(const char *file_part1, const char *file_part2,
struct libfonts_rendering_settings *settings, struct libfonts_context *ctx)
{
return getn(file_part1, strlen(file_part1), file_part2, settings, ctx);
}
int
libfonts_get_default_rendering_settings(struct libfonts_rendering_settings *settings, struct libfonts_context *ctx)
{
const char *env, *next;
char *home = NULL;
int saved_errno = errno;
int ret = 0;
size_t len;
if (settings) {
#define X(INDEX, CONFNAME, CNAME, DEFVAL, PARSER) settings->CNAME = DEFVAL
LIST_RENDERING_SETTINGS(X, ;);
#undef X
}
env = libfonts_getenv__("XDG_CONFIG_HOME", ctx);
if (env && *env) {
ret = get(env, "/libfonts/default-rendering.conf", settings, ctx);
if (ret)
goto out;
}
env = libfonts_getenv__("HOME", ctx);
if (env && *env) {
ret = get(env, "/.config/libfonts/default-rendering.conf", settings, ctx);
if (ret)
goto out;
ret = get(env, "/.libfonts/default-rendering.conf", settings, ctx);
if (ret)
goto out;
}
home = libfonts_gethome__(ctx);
if (home && *home) {
ret = get(home, "/.config/libfonts/default-rendering.conf", settings, ctx);
if (ret)
goto out;
ret = get(home, "/.libfonts/default-rendering.conf", settings, ctx);
if (ret)
goto out;
}
env = libfonts_getenv__("XDG_CONFIG_DIRS", ctx);
if (env && *env) {
do {
next = strchr(&env[1], ':');
len = next ? (size_t)(next - env) : strlen(env);
if (len) {
ret = getn(env, len, "/libfonts/default-rendering.conf", settings, ctx);
if (ret)
goto out;
}
env += len + 1;
} while (next);
}
ret = get("/etc", "/libfonts/default-rendering.conf", settings, ctx);
out:
free(home);
if (ret >= 0)
errno = saved_errno;
return ret;
}
#else
int
main(void)
{
return 0; /* XXX add test */
}
#endif
|
