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
|
/*
Author: José Bollo <jobol@nonadev.net>
Author: José Bollo <jose.bollo@iot.bzh>
https://gitlab.com/jobol/mustach
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <libgen.h>
#include "mustach-json-c.h"
static const size_t BLOCKSIZE = 8192;
static const char *errors[] = {
"??? unreferenced ???",
"system",
"unexpected end",
"empty tag",
"tag too long",
"bad separators",
"too depth",
"closing",
"bad unescape tag",
"invalid interface",
"item not found",
"partial not found"
};
static void help(char *prog)
{
printf("usage: %s json-file mustach-templates...\n", basename(prog));
exit(0);
}
static char *readfile(const char *filename)
{
int f;
struct stat s;
char *result;
size_t size, pos;
ssize_t rc;
result = NULL;
if (filename[0] == '-' && filename[1] == 0)
f = dup(0);
else
f = open(filename, O_RDONLY);
if (f < 0) {
fprintf(stderr, "Can't open file: %s\n", filename);
exit(1);
}
fstat(f, &s);
switch (s.st_mode & S_IFMT) {
case S_IFREG:
size = s.st_size;
break;
case S_IFSOCK:
case S_IFIFO:
size = BLOCKSIZE;
break;
default:
fprintf(stderr, "Bad file: %s\n", filename);
exit(1);
}
pos = 0;
result = malloc(size + 1);
do {
if (result == NULL) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
rc = read(f, &result[pos], (size - pos) + 1);
if (rc < 0) {
fprintf(stderr, "Error while reading %s\n", filename);
exit(1);
}
if (rc > 0) {
pos += (size_t)rc;
if (pos > size) {
size = pos + BLOCKSIZE;
result = realloc(result, size + 1);
}
}
} while(rc > 0);
close(f);
result[pos] = 0;
return result;
}
int main(int ac, char **av)
{
struct json_object *o;
char *t;
char *prog = *av;
int s;
(void)ac; /* unused */
if (*++av) {
if (!strcmp(*av, "-h") || !strcmp(*av, "--help"))
help(prog);
if (av[0][0] == '-' && !av[0][1])
o = json_object_from_fd(0);
else
o = json_object_from_file(av[0]);
#if JSON_C_VERSION_NUM >= 0x000D00
if (json_util_get_last_err() != NULL) {
fprintf(stderr, "Bad json: %s (file %s)\n", json_util_get_last_err(), av[0]);
exit(1);
}
else
#endif
if (o == NULL) {
fprintf(stderr, "Aborted: null json (file %s)\n", av[0]);
exit(1);
}
while(*++av) {
t = readfile(*av);
s = fmustach_json_c(t, o, stdout);
if (s != 0) {
s = -s;
if (s < 1 || s >= (int)(sizeof errors / sizeof * errors))
s = 0;
fprintf(stderr, "Template error %s (file %s)\n", errors[s], *av);
}
free(t);
}
json_object_put(o);
}
return 0;
}
|
