blob: 9284199cde8d6d5e01b47476ff35283cf224e0af (
plain) (
blame)
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
|
/*
* page.c
*
* map page numbers to file position
*/
#include <X11/Xos.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <stdio.h>
#include <ctype.h>
#include "DviP.h"
#ifdef X_NOT_STDC_ENV
extern long ftell();
#endif
static DviFileMap *
MapPageNumberToFileMap (dw, number)
DviWidget dw;
int number;
{
DviFileMap *m;
for (m = dw->dvi.file_map; m; m=m->next)
if (m->page_number == number)
break;
return m;
}
DestroyFileMap (m)
DviFileMap *m;
{
DviFileMap *next;
for (; m; m = next) {
next = m->next;
XtFree ((char *) m);
}
}
ForgetPagePositions (dw)
DviWidget dw;
{
DestroyFileMap (dw->dvi.file_map);
dw->dvi.file_map = 0;
}
RememberPagePosition(dw, number)
DviWidget dw;
int number;
{
DviFileMap *m;
if (!(m = MapPageNumberToFileMap (dw, number))) {
m = (DviFileMap *) XtMalloc (sizeof *m);
m->page_number = number;
m->next = dw->dvi.file_map;
dw->dvi.file_map = m;
}
if (dw->dvi.tmpFile)
m->position = ftell (dw->dvi.tmpFile);
else
m->position = ftell (dw->dvi.file);
}
SearchPagePosition (dw, number)
DviWidget dw;
int number;
{
DviFileMap *m;
if (!(m = MapPageNumberToFileMap (dw, number)))
return -1;
return m->position;
}
FileSeek(dw, position)
DviWidget dw;
long position;
{
if (dw->dvi.tmpFile) {
dw->dvi.readingTmp = 1;
fseek (dw->dvi.tmpFile, position, 0);
} else
fseek (dw->dvi.file, position, 0);
}
|
