summaryrefslogtreecommitdiff
path: root/pith/margin.c
blob: d49b88014470b6f91505800a04c83163dae57f0f (plain)
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
#if !defined(lint) && !defined(DOS)
static char rcsid[] = "$Id: margin.c 1032 2008-04-11 00:30:04Z hubert@u.washington.edu $";
#endif

/*
 * ========================================================================
 * Copyright 2013-2021 Eduardo Chappa
 * Copyright 2006-2008 University of Washington
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * ========================================================================
 */

/*======================================================================

     margin.c
     Implements message data gathering and formatting

  ====*/


#include "../pith/headers.h"
#include "../pith/string.h"
#include "../pith/state.h"
#include "../pith/conf.h"


/*
 * Internal prototypes
 */


/*
 * format_view_margin - return sane value for vertical margins
 */
int *
format_view_margin(void)
{
    static int margin[2];
    char tmp[100], e[200], *err, lastchar = 0;
    int left = 0, right = 0, leftm = 0, rightm = 0;
    size_t l;

    memset(margin, 0, sizeof(margin));

    /*
     * We initially tried to make sure that the user didn't shoot themselves
     * in the foot by setting this too small. People seem to want to do some
     * strange stuff, so we're going to relax the wild shot detection and
     * let people set what they want, until we get to the point of totally
     * absurd. We've also added the possibility of appending the letter c
     * onto the width. That means treat the value as an absolute column
     * instead of a width. That is, a right margin of 76c means wrap at
     * column 76, whereas right margin of 4 means to wrap at column
     * screen width - 4.
     */
    if(ps_global->VAR_VIEW_MARGIN_LEFT){
	strncpy(tmp, ps_global->VAR_VIEW_MARGIN_LEFT, sizeof(tmp)-1);
	tmp[sizeof(tmp)-1] = '\0';
	removing_leading_and_trailing_white_space(tmp);
	if(tmp[0]){
	    l = strlen(tmp);
	    if(l > 0)
	      lastchar = tmp[l-1];

	    if(lastchar == 'c')
	      tmp[l-1] = '\0';
	    
	    if((err = strtoval(tmp, &left, 0, 0, 0, e, sizeof(e), "Viewer-margin-left")) != NULL){
		leftm = 0;
		dprint((2, "%s\n", err));
	    }
	    else{
		if(lastchar == 'c')
		  leftm = left-1;
		else
		  leftm = left;
		
		leftm = MIN(MAX(0, leftm), ps_global->ttyo->screen_cols);
	    }
	}
    }

    if(ps_global->VAR_VIEW_MARGIN_RIGHT){
	strncpy(tmp, ps_global->VAR_VIEW_MARGIN_RIGHT, sizeof(tmp)-1);
	tmp[sizeof(tmp)-1] = '\0';
	removing_leading_and_trailing_white_space(tmp);
	if(tmp[0]){
	    l = strlen(tmp);
	    if(l > 0)
	      lastchar = tmp[l-1];

	    if(lastchar == 'c')
	      tmp[l-1] = '\0';
	    
	    if((err = strtoval(tmp, &right, 0, 0, 0, e, sizeof(e), "Viewer-margin-right")) != NULL){
		rightm = 0;
		dprint((2, "%s\n", err));
	    }
	    else{
		if(lastchar == 'c')
		  rightm = ps_global->ttyo->screen_cols - right;
		else
		  rightm = right;
		
		rightm = MIN(MAX(0, rightm), ps_global->ttyo->screen_cols);
	    }
	}
    }

    if((rightm > 0 || leftm > 0) && rightm >= 0 && leftm >= 0
       && ps_global->ttyo->screen_cols - rightm - leftm >= 8){
	margin[0] = leftm;
	margin[1] = rightm;
    }

    return(margin);
}


/*
 * Give a margin for help and such
 */
int *
non_messageview_margin(void)
{
    static int margin[2];

    margin[0] = 0;
    margin[1] = 4;

    return(margin);
}