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
|
/*
* EasyChem
* A program for creating and editing molecular formulas.
*
* Copyright (C) 2003, 2004, 2005 François-Xavier Coudert
*
* Distributed under the General Public Licence (GPL).
* See file COPYING in the source distribution for more details.
*
*/
#define _XOPEN_SOURCE 600
#include <fcntl.h>
#ifdef UNIX
#include <sys/wait.h>
#endif
#include <unistd.h>
#include <time.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include <stdlib.h>
#include "common.h"
#include "detect.h"
/* This detects whether we can find 'gs', and returns a code
* corresponding to the situtation (PROGRAM_IN_*, see detect.h) */
int
detect_gs (void)
{
#ifdef UNIX
int pid, f[2], dum, fd, count;
char *argv[6] = { "gs", "-q", "-sDEVICE=nullpage", "-dBATCH", "", NULL };
char *temp;
FILE *file;
temp = g_strconcat (g_get_tmp_dir (), "/gs_detect.XXXXXX", NULL);
fd = mkstemp (temp);
if (fd == -1)
return PROGRAM_NOT_FOUND;
file = fdopen (fd, "w");
if (file == NULL)
return PROGRAM_NOT_FOUND;
fputs ("(125) = quit", file);
fclose (file);
if ((pipe (f) == -1) || ((pid = fork ()) < 0))
return PROGRAM_NOT_FOUND;
if (pid == 0)
{
close (f[0]);
dup2 (f[1], 1);
close (f[1]);
argv[3] = temp;
if (prop.path_gs != NULL)
execv(prop.path_gs, argv);
puts ("42");
fflush (stdout);
#ifdef GS_PATH
execv (GS_PATH "/gs", argv);
#endif
puts ("42");
fflush (stdout);
execvp ("gs", argv);
puts ("42");
fflush (stdout);
execv ("/usr/bin/gs", argv);
puts ("42");
fflush (stdout);
execv ("/usr/local/bin/gs", argv);
puts ("42");
fflush (stdout);
execv ("/sw/bin/gs", argv);
puts ("42");
fflush (stdout);
_exit (0);
}
close (f[1]);
wait (NULL);
count = 0;
file = fdopen (f[0], "r");
while (!feof (file))
{
fscanf (file, "%d", &dum);
if (dum == 42)
{
dum = 0;
count++;
}
}
fclose (file);
unlink (temp);
g_free (temp);
if (dum != 125)
return PROGRAM_NOT_FOUND;
if (count == 0)
return PROGRAM_IN_PREF_PATH;
if (count == 1)
return PROGRAM_IN_PROVIDED_PATH;
if (count == 2)
return PROGRAM_IN_PATH;
if (count == 3)
return PROGRAM_IN_USR_BIN;
if (count == 4)
return PROGRAM_IN_USR_LOCAL_BIN;
if (count == 5)
return PROGRAM_IN_SW_BIN;
#endif
return PROGRAM_NOT_FOUND;
}
/* This detects whether we can find 'pstoedit', and returns a code
* corresponding to the situtation (PROGRAM_IN_*, see detect.h) */
int
detect_pstoedit (void)
{
#ifdef UNIX
int pid, f[2], fd, dum, count;
char *argv[2] = { "pstoedit", NULL };
FILE * file;
if ((pipe (f) == -1) || ((pid = fork ()) < 0))
return PROGRAM_NOT_FOUND;
if (pid == 0)
{
close (f[0]);
dup2 (f[1], 1);
fd = open ("/dev/null", O_APPEND);
dup2 (fd, 2);
close (fd);
close (f[1]);
if (prop.path_gs != NULL)
execv(prop.path_pstoedit, argv);
puts ("42");
fflush (stdout);
#ifdef PSTOEDIT_PATH
execv (PSTOEDIT_PATH "/pstoedit", argv);
#endif
puts ("42");
fflush (stdout);
execvp ("pstoedit", argv);
puts ("42");
fflush (stdout);
execv ("/usr/bin/pstoedit", argv);
puts ("42");
fflush (stdout);
execv ("/usr/local/bin/pstoedit", argv);
puts ("42");
fflush (stdout);
execv ("/sw/bin/pstoedit", argv);
puts ("42");
fflush (stdout);
_exit (0);
}
close (f[1]);
wait (NULL);
count = 0;
file = fdopen (f[0], "r");
while (!feof (file))
{
dum = 0;
fscanf (file, "%d", &dum);
if (dum == 42)
count++;
}
fclose (file);
if (count == 0)
return PROGRAM_IN_PREF_PATH;
if (count == 1)
return PROGRAM_IN_PROVIDED_PATH;
if (count == 2)
return PROGRAM_IN_PATH;
if (count == 3)
return PROGRAM_IN_USR_BIN;
if (count == 4)
return PROGRAM_IN_USR_LOCAL_BIN;
if (count == 5)
return PROGRAM_IN_SW_BIN;
#endif
return PROGRAM_NOT_FOUND;
}
|
