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
|
/* $Id: ltexiolib.c 1013 2008-02-14 00:09:02Z oneiros $ */
#include "luatex-api.h"
#include <ptexlib.h>
typedef void (*texio_printer) (strnumber s);
static char *loggable_info = NULL;
static int
do_texio_print (lua_State *L, texio_printer printfunction) {
strnumber texs,u;
char *s;
char save_selector;
int n,i;
size_t k;
u = 0;
n = lua_gettop(L);
if (n==0 || !lua_isstring(L, -1)) {
lua_pushstring(L, "no string to print");
lua_error(L);
}
save_selector = selector;
i = 1;
if (n>1) {
s=(char *)lua_tostring(L, 1);
if (strcmp(s,"log") == 0) { i++; selector = log_only; }
else if (strcmp(s,"term") == 0) { i++; selector = term_only; }
else if (strcmp(s,"term and log") == 0) { i++; selector = term_and_log; }
}
if (selector!=log_only && selector!=term_only && selector != term_and_log) {
normalize_selector(); /* sets selector */
}
/* just in case there is a string in progress */
if (str_start[str_ptr-0x200000]<pool_ptr)
u=make_string();
for (;i<=n;i++) {
s = (char *)lua_tolstring(L, i, &k);
texs = maketexlstring(s,k);
printfunction(texs);
flush_str(texs);
}
selector = save_selector;
if (u!=0) str_ptr--;
return 0;
}
static void
do_texio_ini_print (lua_State *L, char *extra) {
char *s;
int i,n,l;
n = lua_gettop(L);
i = 1;
l = 3;
if (n>1) {
s=(char *)lua_tostring(L, 1);
if (strcmp(s,"log") == 0) { i++; l = 1; }
else if (strcmp(s,"term") == 0) { i++; l = 2; }
else if (strcmp(s,"term and log") == 0) { i++; l = 3; }
}
for (;i<=n;i++) {
if(lua_isstring(L, i)) {
s = (char *)lua_tostring(L, i);
if (l==2||l==3)
fprintf(stdout,"%s%s", extra, s);
if (l==1||l==3) {
if (loggable_info==NULL) {
loggable_info = strdup(s);
} else {
char *v = concat3 (loggable_info,extra,s);
free(loggable_info);
loggable_info = v;
}
}
}
}
}
static int
texio_print (lua_State *L) {
if (ready_already!=314159 || pool_ptr==0 || job_name==0) {
do_texio_ini_print(L,"");
return 0;
}
return do_texio_print(L,zprint);
}
static int
texio_printnl (lua_State *L) {
if (ready_already!=314159 || pool_ptr==0 || job_name==0) {
do_texio_ini_print(L,"\n");
return 0;
}
return do_texio_print(L,zprint_nl);
}
/* at the point this function is called, the selector is log_only */
void flush_loggable_info (void) {
if (loggable_info!=NULL) {
fprintf(log_file,"%s\n",loggable_info);
free(loggable_info);
loggable_info=NULL;
}
}
static const struct luaL_reg texiolib [] = {
{"write", texio_print},
{"write_nl", texio_printnl},
{NULL, NULL} /* sentinel */
};
int
luaopen_texio (lua_State *L) {
luaL_register(L,"texio",texiolib);
return 1;
}
|