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
|
/* Command argument parsing module for the Lua/APR binding.
*
* Author: Peter Odding <peter@peterodding.com>
* Last Change: February 25, 2011
* Homepage: http://peterodding.com/code/lua/apr/
* License: MIT
*/
#include "lua_apr.h"
#include <apr_getopt.h>
int lua_apr_getopt(lua_State *L)
{
apr_status_t status;
apr_pool_t *pool;
apr_getopt_t *os;
const char *s, **argv;
apr_getopt_option_t *opts;
int i, j, argc, optc, silent;
/* XXX No data validation because only apr.lua calls us directly! */
silent = lua_toboolean(L, 3);
lua_settop(L, 2);
status = apr_pool_create(&pool, NULL);
if (status != APR_SUCCESS)
return push_error_status(L, status);
/* Copy options to array of apr_getopt_option_t structures. */
optc = lua_objlen(L, 1);
opts = apr_palloc(pool, sizeof opts[0] * (optc + 1));
for (i = 1; i <= optc; i++) {
lua_rawgeti(L, 1, i);
lua_getfield(L, -1, "optch");
s = lua_tostring(L, -1);
opts[i - 1].optch = s && s[0] ? s[0] : 256;
lua_pop(L, 1);
lua_getfield(L, -1, "name");
opts[i - 1].name = lua_tostring(L, -1);
lua_pop(L, 1);
lua_getfield(L, -1, "has_arg");
opts[i - 1].has_arg = lua_toboolean(L, -1);
lua_pop(L, 1);
lua_getfield(L, -1, "description");
opts[i - 1].description = lua_tostring(L, -1);
lua_pop(L, 2);
}
/* Terminate the options array. */
opts[optc].optch = 0;
/* Copy arguments to array of strings. */
argc = lua_objlen(L, 2) + 1;
argv = apr_palloc(pool, sizeof argv[0] * argc);
for (i = 0; i <= argc; i++) {
lua_rawgeti(L, 2, i);
argv[i] = lua_tostring(L, -1);
lua_pop(L, 1);
}
/* Initialize arguments for parsing by apr_getopt_long(). */
status = apr_getopt_init(&os, pool, argc, argv);
if (status != APR_SUCCESS)
goto fail;
os->interleave = 1;
if (silent)
os->errfn = NULL;
/* Parse options, save matched options in table #1. */
lua_createtable(L, 0, optc);
for (;;) {
char buffer[2] = { '\0', '\0' };
i = 256;
s = NULL;
status = apr_getopt_long(os, opts, &i, &s);
if (status == APR_EOF)
break;
else if (status != APR_SUCCESS)
goto fail;
assert(i != 256);
buffer[0] = i;
/* Get existing value(s) for option. */
lua_getfield(L, -1, buffer);
if (s == NULL) {
/* Options without arguments are counted. */
if (!lua_isnumber(L, -1))
lua_pushinteger(L, 1);
else
lua_pushinteger(L, lua_tointeger(L, -1) + 1);
lua_setfield(L, -3, buffer);
lua_pop(L, 1); /* existing value */
} else if (lua_istable(L, -1)) {
/* Add argument to table of existing values. */
push_string_or_true(L, s);
lua_rawseti(L, -2, lua_objlen(L, -2) + 1);
lua_pop(L, 1); /* existing value */
} else if (!lua_isnil(L, -1)) {
/* Combine 1st and 2nd argument in table. */
lua_newtable(L);
lua_insert(L, -2);
lua_rawseti(L, -2, 1);
push_string_or_true(L, s);
lua_rawseti(L, -2, 2);
lua_setfield(L, -2, buffer);
} else {
/* Set 1st argument value. */
lua_pop(L, 1); /* pop nil result */
push_string_or_true(L, s);
lua_setfield(L, -2, buffer);
}
}
/* Save matched arguments in table #2. */
lua_createtable(L, argc - os->ind, 0);
for (i = 1, j = os->ind; j < argc; i++, j++) {
lua_pushstring(L, os->argv[j]);
lua_rawseti(L, -2, i);
}
/* Destroy the memory pool and return the two tables. */
apr_pool_destroy(pool);
return 2;
fail:
apr_pool_destroy(pool);
return push_error_status(L, status);
}
|
