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
|
/*
* Copyright (c) 2009-2012 Petri Lehtinen <petri@digip.org>
*
* Jansson is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <jansson.h>
#if HAVE_LOCALE_H
#include <locale.h>
#endif
#if _WIN32
#include <io.h> /* for _setmode() */
#include <fcntl.h> /* for _O_BINARY */
#endif
#define l_isspace(c) ((c) == ' ' || (c) == '\n' || (c) == '\r' || (c) == '\t')
static int getenv_int(const char *name)
{
char *value, *end;
long result;
value = getenv(name);
if(!value)
return 0;
result = strtol(value, &end, 10);
if(*end != '\0')
return 0;
return (int)result;
}
/* Return a pointer to the first non-whitespace character of str.
Modifies str so that all trailing whitespace characters are
replaced by '\0'. */
static const char *strip(char *str)
{
size_t length;
char *result = str;
while(*result && l_isspace(*result))
result++;
length = strlen(result);
if(length == 0)
return result;
while(l_isspace(result[length - 1]))
result[--length] = '\0';
return result;
}
int main(int argc, char *argv[])
{
int indent = 0;
size_t flags = 0;
json_t *json;
json_error_t error;
#if HAVE_SETLOCALE
setlocale(LC_ALL, "");
#endif
if(argc != 1) {
fprintf(stderr, "usage: %s\n", argv[0]);
return 2;
}
#ifdef _WIN32
/* On Windows, set stdout and stderr to binary mode to avoid
outputting DOS line terminators */
_setmode(_fileno(stdout), _O_BINARY);
_setmode(_fileno(stderr), _O_BINARY);
#endif
indent = getenv_int("JSON_INDENT");
if(indent < 0 || indent > 255) {
fprintf(stderr, "invalid value for JSON_INDENT: %d\n", indent);
return 2;
}
if(indent > 0)
flags |= JSON_INDENT(indent);
if(getenv_int("JSON_COMPACT") > 0)
flags |= JSON_COMPACT;
if(getenv_int("JSON_ENSURE_ASCII"))
flags |= JSON_ENSURE_ASCII;
if(getenv_int("JSON_PRESERVE_ORDER"))
flags |= JSON_PRESERVE_ORDER;
if(getenv_int("JSON_SORT_KEYS"))
flags |= JSON_SORT_KEYS;
if(getenv_int("STRIP")) {
/* Load to memory, strip leading and trailing whitespace */
size_t size = 0, used = 0;
char *buffer = NULL;
while(1) {
int count;
size = (size == 0 ? 128 : size * 2);
buffer = realloc(buffer, size);
if(!buffer) {
fprintf(stderr, "Unable to allocate %d bytes\n", (int)size);
return 1;
}
count = fread(buffer + used, 1, size - used, stdin);
if(count < size - used) {
buffer[used + count] = '\0';
break;
}
used += count;
}
json = json_loads(strip(buffer), 0, &error);
free(buffer);
}
else
json = json_loadf(stdin, 0, &error);
if(!json) {
fprintf(stderr, "%d %d %d\n%s\n",
error.line, error.column, error.position,
error.text);
return 1;
}
json_dumpf(json, stdout, flags);
json_decref(json);
return 0;
}
|
