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annotate pwm-clip.c @ 37:e027dd4409c7

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author Guido Berhoerster <guido+pwm@berhoerster.name>
date Thu, 08 Aug 2019 10:31:06 +0200
parents 5bdea77d0c1d
children
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26
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
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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 <nettle/base64.h>
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31 #include <string.h>
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32 #include <stdlib.h>
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33 #include <stdio.h>
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34 #include <unistd.h>
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35
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36 #include "util.h"
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37
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38 #define CHUNK_SIZE 128
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39
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40 static char *
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41 base64_encode(const unsigned char *src, size_t size)
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42 {
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43 char *dst = NULL;
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44 struct base64_encode_ctx b64_ctx;
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45 size_t len = 0;
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46
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47 dst = xmalloc(BASE64_ENCODE_LENGTH(size) +
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48 BASE64_ENCODE_FINAL_LENGTH);
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49
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50 base64_encode_init(&b64_ctx);
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51 len += base64_encode_update(&b64_ctx, (unsigned char *)dst, size, src);
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52 len += base64_encode_final(&b64_ctx, (unsigned char *)dst);
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53 dst[len] = '\0';
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54
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55 dst = xrealloc(dst, len + 1);
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56
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57 return (dst);
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58 }
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59
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60 static void
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61 set_clipboard(const char *s)
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62 {
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63 char *b64 = NULL;
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64
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65 b64 = base64_encode((const unsigned char *)s, strlen(s));
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66 printf("\033]52;c;%s\a\n", b64);
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67 free(b64);
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68 }
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69
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70 static void
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71 set_clipboard_dcs_tmux(const char *s)
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72 {
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73 char *b64 = NULL;
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74
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75 b64 = base64_encode((const unsigned char *)s, strlen(s));
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76 printf("\033Ptmux;\033\033]52;c;%s\a\033\\", b64);
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77 free(b64);
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78 }
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79
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80 static void
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81 set_clipboard_dcs_chunked(const char *s)
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82 {
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83 char *b64 = NULL;
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84 size_t i;
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85
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86 b64 = base64_encode((const unsigned char *)s, strlen(s));
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87
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88 printf("\033P\033]52;c;");
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89 for (i = 0; b64[i] != '\0'; i++) {
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90 if ((i > 0) && (i % CHUNK_SIZE == 0)) {
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91 printf("\033\\\033P");
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92 }
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93 putchar(b64[i]);
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94 }
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95 printf("\a\033\\");
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96
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97 free(b64);
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98 }
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99
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100 static void
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101 usage(void)
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102 {
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103 fprintf(stderr, "usage: %s\n", getprogname());
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104 }
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105
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106 int
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107 main(int argc, char *argv[])
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108 {
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109 int status = EXIT_FAILURE;
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110 char *term;
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111 void (*set_clipboard_func)(const char *);
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112 int errflag = 0;
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113 int c;
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114 ssize_t len;
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115 char *s = NULL;
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116 size_t size = 0;
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117
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118 setprogname(argv[0]);
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119
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120 term = getenv("TERM");
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121 if (term == NULL) {
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
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122 fprintf(stderr, "error: unknown terminal\n");
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123 goto out;
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124 } else if (strncmp(term, "xterm", strlen("xterm")) == 0) {
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125 set_clipboard_func = set_clipboard;
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126 } else if (strncmp(term, "tmux", strlen("tmux")) == 0) {
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127 set_clipboard_func = set_clipboard_dcs_tmux;
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128 } else if (strncmp(term, "screen", strlen("screen")) == 0) {
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129 if (getenv("TMUX") != NULL) {
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130 set_clipboard_func = set_clipboard_dcs_tmux;
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131 } else {
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132 set_clipboard_func = set_clipboard_dcs_chunked;
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133 }
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134 } else {
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diff changeset
135 fprintf(stderr, "terminal does not support setting "
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136 "X11 CLIPBOARD selection\n");
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137 goto out;
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diff changeset
138 }
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139
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diff changeset
140 while (!errflag && (c = getopt(argc, argv, "h")) != -1) {
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diff changeset
141 switch (c) {
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142 case 'h':
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diff changeset
143 usage();
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144 exit(EXIT_SUCCESS);
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diff changeset
145 default:
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diff changeset
146 errflag = 1;
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diff changeset
147 }
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diff changeset
148 }
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
149 if (errflag || (optind + 1 < argc)) {
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diff changeset
150 usage();
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diff changeset
151 exit(EXIT_USAGE);
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diff changeset
152 }
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parents:
diff changeset
153
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
154 errno = 0;
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
155 len = getline(&s, &size, stdin);
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parents:
diff changeset
156 if (len < 0) {
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parents:
diff changeset
157 if (errno == 0) {
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parents:
diff changeset
158 fprintf(stderr, "failed to read line\n");
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
159 goto out;
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
160 } else {
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
161 err(1, "getline");
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
162 }
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
163 }
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
164 if ((len > 0) && (s[len - 1] == '\n')) {
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
165 s[--len] = '\0';
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
166 }
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
167
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
168 set_clipboard_func(s);
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
169
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
170 status = EXIT_SUCCESS;
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
171
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
172 out:
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
173 free(s);
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
174
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
175 exit(status);
5bdea77d0c1d Add pwm-clip utility for setting the X11 CLIPBOARD selection
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
176 }