Annotation of embedaddon/tmux/cmd-if-shell.c, revision 1.1
1.1 ! misho 1: /* $OpenBSD$ */
! 2:
! 3: /*
! 4: * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
! 5: * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
! 6: *
! 7: * Permission to use, copy, modify, and distribute this software for any
! 8: * purpose with or without fee is hereby granted, provided that the above
! 9: * copyright notice and this permission notice appear in all copies.
! 10: *
! 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 15: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
! 16: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
! 17: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 18: */
! 19:
! 20: #include <sys/types.h>
! 21: #include <sys/wait.h>
! 22:
! 23: #include <stdlib.h>
! 24: #include <string.h>
! 25:
! 26: #include "tmux.h"
! 27:
! 28: /*
! 29: * Executes a tmux command if a shell command returns true or false.
! 30: */
! 31:
! 32: static enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmdq_item *);
! 33:
! 34: static enum cmd_retval cmd_if_shell_error(struct cmdq_item *, void *);
! 35: static void cmd_if_shell_callback(struct job *);
! 36: static void cmd_if_shell_free(void *);
! 37:
! 38: const struct cmd_entry cmd_if_shell_entry = {
! 39: .name = "if-shell",
! 40: .alias = "if",
! 41:
! 42: .args = { "bFt:", 2, 3 },
! 43: .usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
! 44: "[command]",
! 45:
! 46: .tflag = CMD_PANE_CANFAIL,
! 47:
! 48: .flags = 0,
! 49: .exec = cmd_if_shell_exec
! 50: };
! 51:
! 52: struct cmd_if_shell_data {
! 53: char *file;
! 54: u_int line;
! 55:
! 56: char *cmd_if;
! 57: char *cmd_else;
! 58:
! 59: struct client *client;
! 60: struct cmdq_item *item;
! 61: struct mouse_event mouse;
! 62: };
! 63:
! 64: static enum cmd_retval
! 65: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
! 66: {
! 67: struct args *args = self->args;
! 68: struct cmd_if_shell_data *cdata;
! 69: char *shellcmd, *cmd, *cause;
! 70: struct cmd_list *cmdlist;
! 71: struct cmdq_item *new_item;
! 72: struct client *c = item->state.c;
! 73: struct session *s = item->state.tflag.s;
! 74: struct winlink *wl = item->state.tflag.wl;
! 75: struct window_pane *wp = item->state.tflag.wp;
! 76: const char *cwd;
! 77:
! 78: if (item->client != NULL && item->client->session == NULL)
! 79: cwd = item->client->cwd;
! 80: else if (s != NULL)
! 81: cwd = s->cwd;
! 82: else
! 83: cwd = NULL;
! 84:
! 85: shellcmd = format_single(item, args->argv[0], c, s, wl, wp);
! 86: if (args_has(args, 'F')) {
! 87: cmd = NULL;
! 88: if (*shellcmd != '0' && *shellcmd != '\0')
! 89: cmd = args->argv[1];
! 90: else if (args->argc == 3)
! 91: cmd = args->argv[2];
! 92: free(shellcmd);
! 93: if (cmd == NULL)
! 94: return (CMD_RETURN_NORMAL);
! 95: cmdlist = cmd_string_parse(cmd, NULL, 0, &cause);
! 96: if (cmdlist == NULL) {
! 97: if (cause != NULL) {
! 98: cmdq_error(item, "%s", cause);
! 99: free(cause);
! 100: }
! 101: return (CMD_RETURN_ERROR);
! 102: }
! 103: new_item = cmdq_get_command(cmdlist, NULL, &item->mouse, 0);
! 104: cmdq_insert_after(item, new_item);
! 105: cmd_list_free(cmdlist);
! 106: return (CMD_RETURN_NORMAL);
! 107: }
! 108:
! 109: cdata = xcalloc(1, sizeof *cdata);
! 110: if (self->file != NULL) {
! 111: cdata->file = xstrdup(self->file);
! 112: cdata->line = self->line;
! 113: }
! 114:
! 115: cdata->cmd_if = xstrdup(args->argv[1]);
! 116: if (args->argc == 3)
! 117: cdata->cmd_else = xstrdup(args->argv[2]);
! 118: else
! 119: cdata->cmd_else = NULL;
! 120:
! 121: cdata->client = item->client;
! 122: cdata->client->references++;
! 123:
! 124: if (!args_has(args, 'b'))
! 125: cdata->item = item;
! 126: else
! 127: cdata->item = NULL;
! 128: memcpy(&cdata->mouse, &item->mouse, sizeof cdata->mouse);
! 129:
! 130: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
! 131: cdata);
! 132: free(shellcmd);
! 133:
! 134: if (args_has(args, 'b'))
! 135: return (CMD_RETURN_NORMAL);
! 136: return (CMD_RETURN_WAIT);
! 137: }
! 138:
! 139: static enum cmd_retval
! 140: cmd_if_shell_error(struct cmdq_item *item, void *data)
! 141: {
! 142: char *error = data;
! 143:
! 144: cmdq_error(item, "%s", error);
! 145: free(error);
! 146:
! 147: return (CMD_RETURN_NORMAL);
! 148: }
! 149:
! 150: static void
! 151: cmd_if_shell_callback(struct job *job)
! 152: {
! 153: struct cmd_if_shell_data *cdata = job->data;
! 154: struct client *c = cdata->client;
! 155: struct cmd_list *cmdlist;
! 156: struct cmdq_item *new_item;
! 157: char *cause, *cmd, *file = cdata->file;
! 158: u_int line = cdata->line;
! 159:
! 160: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
! 161: cmd = cdata->cmd_else;
! 162: else
! 163: cmd = cdata->cmd_if;
! 164: if (cmd == NULL)
! 165: goto out;
! 166:
! 167: cmdlist = cmd_string_parse(cmd, file, line, &cause);
! 168: if (cmdlist == NULL) {
! 169: if (cause != NULL)
! 170: new_item = cmdq_get_callback(cmd_if_shell_error, cause);
! 171: else
! 172: new_item = NULL;
! 173: } else {
! 174: new_item = cmdq_get_command(cmdlist, NULL, &cdata->mouse, 0);
! 175: cmd_list_free(cmdlist);
! 176: }
! 177:
! 178: if (new_item != NULL) {
! 179: if (cdata->item == NULL)
! 180: cmdq_append(c, new_item);
! 181: else
! 182: cmdq_insert_after(cdata->item, new_item);
! 183: }
! 184:
! 185: out:
! 186: if (cdata->item != NULL)
! 187: cdata->item->flags &= ~CMDQ_WAITING;
! 188: }
! 189:
! 190: static void
! 191: cmd_if_shell_free(void *data)
! 192: {
! 193: struct cmd_if_shell_data *cdata = data;
! 194:
! 195: server_client_unref(cdata->client);
! 196:
! 197: free(cdata->cmd_else);
! 198: free(cdata->cmd_if);
! 199:
! 200: free(cdata->file);
! 201: free(cdata);
! 202: }
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