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annotate pager.c @ 25:616385fa1fd9

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Build common functions as a library that can be reused
author Guido Berhoerster <guido+pwm@berhoerster.name>
date Wed, 20 Sep 2017 23:57:51 +0200
parents 5c6155c8e9b6
children
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1 /*
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2 * Copyright (C) 2017 Guido Berhoerster <guido+pwm@berhoerster.name>
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3 *
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4 * Permission is hereby granted, free of charge, to any person obtaining
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5 * a copy of this software and associated documentation files (the
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6 * "Software"), to deal in the Software without restriction, including
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7 * without limitation the rights to use, copy, modify, merge, publish,
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8 * distribute, sublicense, and/or sell copies of the Software, and to
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9 * permit persons to whom the Software is furnished to do so, subject to
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10 * the following conditions:
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11 *
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12 * The above copyright notice and this permission notice shall be included
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13 * in all copies or substantial portions of the Software.
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14 *
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 */
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23
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24 #include "compat.h"
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25
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26 #ifdef HAVE_ERR_H
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27 #include <err.h>
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28 #endif /* HAVE_ERR_H */
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29 #include <errno.h>
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30 #include <fcntl.h>
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31 #include <limits.h>
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32 #include <signal.h>
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33 #include <stdio.h>
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34 #include <string.h>
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35 #include <sys/ioctl.h>
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36 #ifdef HAVE_SYS_QUEUE_H
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37 #include <sys/queue.h>
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38 #endif /* HAVE_SYS_QUEUE_H */
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39 #include <sys/stat.h>
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40 #include <sys/types.h>
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41 #include <termios.h>
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42 #include <unistd.h>
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43 #include <wchar.h>
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44
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45 #include "pwm.h"
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46 #include "pager.h"
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47 #include "util.h"
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48
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49 struct pager {
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50 TAILQ_HEAD(lines_head, lines_entry) lines_head;
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51 int fd;
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52 size_t buf_size;
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53 char *buf;
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54 };
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55
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56 struct lines_entry {
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57 TAILQ_ENTRY(lines_entry) entry;
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58 char *line;
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59 };
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60
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61 struct pager *
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62 pager_create(int fd)
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63 {
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64 struct pager *pager;
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65
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66 pager = xmalloc(sizeof (struct pager));
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67 TAILQ_INIT(&pager->lines_head);
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68 pager->fd = fd;
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69 pager->buf_size = BUFSIZ;
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70 pager->buf = xmalloc(BUFSIZ);
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71
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72 return (pager);
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73 }
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74
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75 void
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76 pager_destroy(struct pager *pager)
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77 {
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78 struct lines_entry *entry;
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79 struct lines_entry *entry_tmp;
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80
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81 if (pager == NULL) {
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82 return;
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83 }
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84
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85 TAILQ_FOREACH_SAFE(entry, &pager->lines_head, entry, entry_tmp) {
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86 TAILQ_REMOVE(&pager->lines_head, entry, entry);
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87 free(entry->line);
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88 free(entry);
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89 }
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90 free(pager->buf);
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91 free(pager);
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92 }
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93
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94 int
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95 pager_vprintf(struct pager *pager, const char *fmt, va_list args)
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96 {
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97 int len;
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98 va_list args_new;
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99 char *p;
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100 size_t line_len;
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101 struct lines_entry *entry;
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102 size_t line_offset;
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103
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104 va_copy(args_new, args);
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105
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106 /* format multibyte string in buffer */
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107 len = vsnprintf(NULL, 0, fmt, args);
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108 if (len < 0) {
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109 err(1, "vsnprintf");
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110 }
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111
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112 if (pager->buf_size < (size_t)len + 1) {
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113 pager->buf_size = len + 1;
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114 pager->buf = xrealloc(pager->buf, pager->buf_size);
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115 }
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116
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117 len = vsnprintf(pager->buf, pager->buf_size, fmt, args_new);
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118 if (len < 0) {
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119 err(1, "vsnprintf");
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120 }
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121
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122 /* split buffer into lines */
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123 for (p = pager->buf; *p != '\0'; p += line_len) {
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124 line_len = strcspn(p, "\n");
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125 if (p[line_len] == '\n') {
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126 line_len++;
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127 }
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128
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129 entry = TAILQ_LAST(&pager->lines_head, lines_head);
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130 line_offset = (entry != NULL) ? strlen(entry->line) : 0;
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131 if ((entry != NULL) && (entry->line[line_offset - 1] != '\n')) {
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132 /*
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133 * append to the last line if it doesn't end with a
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134 * newline
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135 */
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136 entry->line = xrealloc(entry->line, line_offset +
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137 line_len + 1);
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138 memcpy(entry->line + line_offset, p, line_len);
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139 entry->line[line_offset + line_len] = '\0';
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
140 } else {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
141 entry = xmalloc(sizeof (struct lines_entry));
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
142 entry->line = xmalloc(line_len + 1);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
143 memcpy(entry->line, p, line_len);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
144 entry->line[line_len] = '\0';
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
145 TAILQ_INSERT_TAIL(&pager->lines_head, entry, entry);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
146 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
147 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
148
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
149 va_end(args_new);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
150
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
151 return (len);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
152 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
153
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
154 int
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
155 pager_printf(struct pager *pager, const char *fmt, ...)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
156 {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
157 int len;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
158 va_list args;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
159
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
160 va_start(args, fmt);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
161 len = pager_vprintf(pager, fmt, args);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
162 va_end(args);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
163
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
164 return (len);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
165 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
166
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
167 static int
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
168 mbsnprint(unsigned int cols, const char *s, int fd)
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
169 {
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
170 int retval;
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
171 const char *p = s;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
172 unsigned int col = 0;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
173 int mb_len;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
174 wchar_t wc;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
175 int width;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
176 char mb_buf[MB_LEN_MAX];
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
177
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
178 while ((*p != '\n') && (*p != '\0') && (col < cols)) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
179 mb_len = mbtowc(&wc, p, MB_CUR_MAX);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
180 if (mb_len != -1) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
181 width = wcwidth(wc);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
182 if (width != -1) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
183 if (snprintf(mb_buf, sizeof (mb_buf), "%.*s",
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
184 mb_len, p) != mb_len) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
185 err(1, "snprintf");
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
186 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
187 } else {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
188 /*
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
189 * non-printable character, print
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
190 * replacement character
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
191 */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
192 width = 1;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
193 if (snprintf(mb_buf, sizeof (mb_buf),
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
194 "\357\277\275") != 3) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
195 err(1, "snprintf");
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
196 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
197 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
198 } else {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
199 /*
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
200 * decoding failed, reset state and skip one
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
201 * byte
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
202 */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
203 mbtowc(NULL, NULL, MB_CUR_MAX);
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
204 mb_len = 1;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
205
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
206 /* print replacement character */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
207 width = 1;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
208 if (snprintf(mb_buf, sizeof (mb_buf),
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
209 "\357\277\275") != 3) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
210 err(1, "snprintf");
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
211 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
212 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
213
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
214 p += mb_len;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
215 col += width;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
216 if (col <= cols) {
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
217 retval = io_dputs(fd, mb_buf);
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
218 if (retval != IO_OK) {
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
219 return (retval);
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
220 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
221 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
222 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
223
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
224 retval = io_dputs(fd, "\n");
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
225
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
226 return (retval);
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
227 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
228
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
229 enum io_status
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
230 pager_show(struct pager *pager)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
231 {
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
232 int retval = IO_OK;
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
233 int is_interactive;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
234 unsigned int rows = 24;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
235 unsigned int cols = 80;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
236 #ifdef TIOCGWINSZ
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
237 struct winsize ws;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
238 #endif /* TIOCGWINSZ */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
239 unsigned int row = 0;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
240 struct lines_entry *entry;
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
241 int c;
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
242
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
243 is_interactive = (isatty(STDIN_FILENO) && (pager->fd == STDOUT_FILENO));
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
244
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
245 #ifdef TIOCGWINSZ
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
246 if (is_interactive) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
247 /* determine terminal size */
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
248 if (ioctl(pager->fd, TIOCGWINSZ, &ws) == 0) {
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
249 rows = (ws.ws_row > 0) ? ws.ws_row : rows;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
250 cols = (ws.ws_col > 0) ? ws.ws_col : cols;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
251 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
252 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
253 #endif /* TIOCGWINSZ */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
254
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
255 TAILQ_FOREACH(entry, &pager->lines_head, entry) {
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
256 if (is_interactive) {
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
257 retval = mbsnprint(cols, entry->line, pager->fd);
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
258 if (retval != IO_OK) {
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
259 goto out;
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
260 }
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
261 row++;
18
1e39a251cbe9 Use libtecla for interactive input
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 17
diff changeset
262 if ((TAILQ_NEXT(entry, entry) != NULL) &&
1e39a251cbe9 Use libtecla for interactive input
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 17
diff changeset
263 (row == rows - 1)) {
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
264 /* prompt for keypress */
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
265 retval = io_get_char("--More--", &c);
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
266 if (retval != IO_OK) {
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
267 goto out;
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
268 }
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
269 row = 0;
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
270 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
271 } else {
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
272 retval = io_dputs(pager->fd, entry->line);
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
273 if (retval != IO_OK) {
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
274 goto out;
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
275 }
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
276 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
277 }
18
1e39a251cbe9 Use libtecla for interactive input
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 17
diff changeset
278
19
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
279 out:
5c6155c8e9b6 Handle signals
Guido Berhoerster <guido+pwm@berhoerster.name>
parents: 18
diff changeset
280 return (retval);
17
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
281 }