fdupes  2.1.2
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ncurses-print.c
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1 /* FDUPES Copyright (c) 2018 Adrian Lopez
2 
3  Permission is hereby granted, free of charge, to any person
4  obtaining a copy of this software and associated documentation files
5  (the "Software"), to deal in the Software without restriction,
6  including without limitation the rights to use, copy, modify, merge,
7  publish, distribute, sublicense, and/or sell copies of the Software,
8  and to permit persons to whom the Software is furnished to do so,
9  subject to the following conditions:
10 
11  The above copyright notice and this permission notice shall be
12  included in all copies or substantial portions of the Software.
13 
14  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
18  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
19  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
20  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
21 
22 #include "config.h"
23 #include <stdlib.h>
24 #include <wchar.h>
25 #include "ncurses-print.h"
26 #include "errormsg.h"
28 #include "positive_wcwidth.h"
29 
30 void putline(WINDOW *window, const char *str, const int line, const int columns, const int compensate_indent)
31 {
32  wchar_t *dest = 0;
33  int inputlength;
34  int linestart;
35  int linelength;
36  int linewidth;
37  int first_line_columns;
38  int l;
39 
40  inputlength = mbstowcs_escape_invalid(0, str, 0);
41  if (inputlength == 0)
42  return;
43 
44  dest = (wchar_t *) malloc((inputlength + 1) * sizeof(wchar_t));
45  if (dest == NULL)
46  {
47  endwin();
48  errormsg("out of memory\n");
49  exit(1);
50  }
51 
52  mbstowcs_escape_invalid(dest, str, inputlength);
53  dest[inputlength] = L'\0';
54 
55  first_line_columns = columns - compensate_indent;
56 
57  linestart = 0;
58 
59  if (line > 0)
60  {
61  linewidth = positive_wcwidth(dest[linestart]);
62 
63  while (linestart + 1 < inputlength && linewidth + positive_wcwidth(dest[linestart + 1]) <= first_line_columns)
64  linewidth += positive_wcwidth(dest[++linestart]);
65 
66  if (++linestart == inputlength)
67  return;
68 
69  for (l = 1; l < line; ++l)
70  {
71  linewidth = positive_wcwidth(dest[linestart]);
72 
73  while (linestart + 1 < inputlength && linewidth + positive_wcwidth(dest[linestart + 1]) <= columns)
74  linewidth += positive_wcwidth(dest[++linestart]);
75 
76  if (++linestart == inputlength)
77  return;
78  }
79  }
80 
81  linewidth = positive_wcwidth(dest[linestart]);
82  linelength = 1;
83 
84  if (line == 0)
85  {
86  while (linestart + linelength < inputlength && linewidth + positive_wcwidth(dest[linestart + linelength]) <= first_line_columns)
87  {
88  linewidth += positive_wcwidth(dest[linestart + linelength]);
89  ++linelength;
90  }
91  }
92  else
93  {
94  while (linestart + linelength < inputlength && linewidth + positive_wcwidth(dest[linestart + linelength]) <= columns)
95  {
96  linewidth += positive_wcwidth(dest[linestart + linelength]);
97  ++linelength;
98  }
99  }
100 
101  waddnwstr(window, dest + linestart, linelength);
102 
103  free(dest);
104 }
105 
106 void print_spaces(WINDOW *window, int spaces)
107 {
108  int x;
109 
110  for (x = 0; x < spaces; ++x)
111  waddch(window, L' ');
112 }
113 
114 void print_right_justified_int(WINDOW *window, int number, int width)
115 {
116  int length;
117 
118  length = get_num_digits(number);
119  if (number < 0)
120  ++length;
121 
122  if (length < width)
123  print_spaces(window, width - length);
124 
125  wprintw(window, "%d", number);
126 }
127 
128 int vwprintflength(const wchar_t *format, va_list args)
129 {
130  FILE *fp;
131  int size;
132 
133  fp = fopen("/dev/null", "w");
134  if (fp == 0)
135  return 0;
136 
137  size = vfwprintf(fp, format, args);
138 
139  fclose(fp);
140 
141  return size;
142 }
143 
144 int get_num_digits(int value)
145 {
146  int digits = 0;
147 
148  if (value < 0)
149  value = -value;
150 
151  do {
152  value /= 10;
153  ++digits;
154  } while (value > 0);
155 
156  return digits;
157 }
mbstowcs_escape_invalid
size_t mbstowcs_escape_invalid(wchar_t *dest, const char *src, size_t n)
Definition: mbstowcs_escape_invalid.c:56
ncurses-print.h
vwprintflength
int vwprintflength(const wchar_t *format, va_list args)
Definition: ncurses-print.c:128
errormsg
void errormsg(char *message,...)
Definition: errormsg.c:26
putline
void putline(WINDOW *window, const char *str, const int line, const int columns, const int compensate_indent)
Definition: ncurses-print.c:30
errormsg.h
print_spaces
void print_spaces(WINDOW *window, int spaces)
Definition: ncurses-print.c:106
positive_wcwidth
int positive_wcwidth(wchar_t ch)
Definition: positive_wcwidth.c:22
print_right_justified_int
void print_right_justified_int(WINDOW *window, int number, int width)
Definition: ncurses-print.c:114
mbstowcs_escape_invalid.h
get_num_digits
int get_num_digits(int value)
Definition: ncurses-print.c:144
positive_wcwidth.h