1 /* $OpenBSD: cmd-capture-pane.c,v 1.30 2014/10/20 22:29:25 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Jonathan Alvarado <radobobo@users.sourceforge.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <stdlib.h> 22 #include <string.h> 23 24 #include "tmux.h" 25 26 /* 27 * Write the entire contents of a pane to a buffer or stdout. 28 */ 29 30 enum cmd_retval cmd_capture_pane_exec(struct cmd *, struct cmd_q *); 31 32 char *cmd_capture_pane_append(char *, size_t *, char *, size_t); 33 char *cmd_capture_pane_pending(struct args *, struct window_pane *, 34 size_t *); 35 char *cmd_capture_pane_history(struct args *, struct cmd_q *, 36 struct window_pane *, size_t *); 37 38 const struct cmd_entry cmd_capture_pane_entry = { 39 "capture-pane", "capturep", 40 "ab:CeE:JpPqS:t:", 0, 0, 41 "[-aCeJpPq] " CMD_BUFFER_USAGE " [-E end-line] [-S start-line]" 42 CMD_TARGET_PANE_USAGE, 43 0, 44 cmd_capture_pane_exec 45 }; 46 47 char * 48 cmd_capture_pane_append(char *buf, size_t *len, char *line, size_t linelen) 49 { 50 buf = xrealloc(buf, *len + linelen + 1); 51 memcpy(buf + *len, line, linelen); 52 *len += linelen; 53 return (buf); 54 } 55 56 char * 57 cmd_capture_pane_pending(struct args *args, struct window_pane *wp, 58 size_t *len) 59 { 60 char *buf, *line, tmp[5]; 61 size_t linelen; 62 u_int i; 63 64 if (wp->ictx.since_ground == NULL) 65 return (xstrdup("")); 66 67 line = EVBUFFER_DATA(wp->ictx.since_ground); 68 linelen = EVBUFFER_LENGTH(wp->ictx.since_ground); 69 70 buf = xstrdup(""); 71 if (args_has(args, 'C')) { 72 for (i = 0; i < linelen; i++) { 73 if (line[i] >= ' ') { 74 tmp[0] = line[i]; 75 tmp[1] = '\0'; 76 } else 77 xsnprintf(tmp, sizeof tmp, "\\%03o", line[i]); 78 buf = cmd_capture_pane_append(buf, len, tmp, 79 strlen(tmp)); 80 } 81 } else 82 buf = cmd_capture_pane_append(buf, len, line, linelen); 83 return (buf); 84 } 85 86 char * 87 cmd_capture_pane_history(struct args *args, struct cmd_q *cmdq, 88 struct window_pane *wp, size_t *len) 89 { 90 struct grid *gd; 91 const struct grid_line *gl; 92 struct grid_cell *gc = NULL; 93 int n, with_codes, escape_c0, join_lines; 94 u_int i, sx, top, bottom, tmp; 95 char *cause, *buf, *line; 96 const char *Sflag, *Eflag; 97 size_t linelen; 98 99 sx = screen_size_x(&wp->base); 100 if (args_has(args, 'a')) { 101 gd = wp->saved_grid; 102 if (gd == NULL) { 103 if (!args_has(args, 'q')) { 104 cmdq_error(cmdq, "no alternate screen"); 105 return (NULL); 106 } 107 return (xstrdup("")); 108 } 109 } else 110 gd = wp->base.grid; 111 112 Sflag = args_get(args, 'S'); 113 if (Sflag != NULL && strcmp(Sflag, "-") == 0) 114 top = 0; 115 else { 116 n = args_strtonum(args, 'S', INT_MIN, SHRT_MAX, &cause); 117 if (cause != NULL) { 118 top = gd->hsize; 119 free(cause); 120 } else if (n < 0 && (u_int) -n > gd->hsize) 121 top = 0; 122 else 123 top = gd->hsize + n; 124 if (top > gd->hsize + gd->sy - 1) 125 top = gd->hsize + gd->sy - 1; 126 } 127 128 Eflag = args_get(args, 'E'); 129 if (Eflag != NULL && strcmp(Eflag, "-") == 0) 130 bottom = gd->hsize + gd->sy - 1; 131 else { 132 n = args_strtonum(args, 'E', INT_MIN, SHRT_MAX, &cause); 133 if (cause != NULL) { 134 bottom = gd->hsize + gd->sy - 1; 135 free(cause); 136 } else if (n < 0 && (u_int) -n > gd->hsize) 137 bottom = 0; 138 else 139 bottom = gd->hsize + n; 140 if (bottom > gd->hsize + gd->sy - 1) 141 bottom = gd->hsize + gd->sy - 1; 142 } 143 144 if (bottom < top) { 145 tmp = bottom; 146 bottom = top; 147 top = tmp; 148 } 149 150 with_codes = args_has(args, 'e'); 151 escape_c0 = args_has(args, 'C'); 152 join_lines = args_has(args, 'J'); 153 154 buf = NULL; 155 for (i = top; i <= bottom; i++) { 156 line = grid_string_cells(gd, 0, i, sx, &gc, with_codes, 157 escape_c0, !join_lines); 158 linelen = strlen(line); 159 160 buf = cmd_capture_pane_append(buf, len, line, linelen); 161 162 gl = grid_peek_line(gd, i); 163 if (!join_lines || !(gl->flags & GRID_LINE_WRAPPED)) 164 buf[(*len)++] = '\n'; 165 166 free(line); 167 } 168 return (buf); 169 } 170 171 enum cmd_retval 172 cmd_capture_pane_exec(struct cmd *self, struct cmd_q *cmdq) 173 { 174 struct args *args = self->args; 175 struct client *c; 176 struct window_pane *wp; 177 char *buf, *cause; 178 const char *bufname; 179 size_t len; 180 181 if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL) 182 return (CMD_RETURN_ERROR); 183 184 len = 0; 185 if (args_has(args, 'P')) 186 buf = cmd_capture_pane_pending(args, wp, &len); 187 else 188 buf = cmd_capture_pane_history(args, cmdq, wp, &len); 189 if (buf == NULL) 190 return (CMD_RETURN_ERROR); 191 192 if (args_has(args, 'p')) { 193 c = cmdq->client; 194 if (c == NULL || 195 (c->session != NULL && !(c->flags & CLIENT_CONTROL))) { 196 cmdq_error(cmdq, "can't write to stdout"); 197 return (CMD_RETURN_ERROR); 198 } 199 evbuffer_add(c->stdout_data, buf, len); 200 if (args_has(args, 'P') && len > 0) 201 evbuffer_add(c->stdout_data, "\n", 1); 202 server_push_stdout(c); 203 } else { 204 205 bufname = NULL; 206 if (args_has(args, 'b')) 207 bufname = args_get(args, 'b'); 208 209 if (paste_set(buf, len, bufname, &cause) != 0) { 210 cmdq_error(cmdq, "%s", cause); 211 free(buf); 212 free(cause); 213 return (CMD_RETURN_ERROR); 214 } 215 } 216 217 return (CMD_RETURN_NORMAL); 218 } 219