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Annotation of src/usr.bin/tmux/cmd-list.c, Revision 1.6

1.6     ! nicm        1: /* $OpenBSD: cmd-list.c,v 1.5 2010/06/26 18:20:53 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 Nicholas Marriott <nicm@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 <string.h>
                     22:
                     23: #include "tmux.h"
                     24:
                     25: struct cmd_list *
                     26: cmd_list_parse(int argc, char **argv, char **cause)
                     27: {
                     28:        struct cmd_list *cmdlist;
                     29:        struct cmd      *cmd;
                     30:        int              i, lastsplit;
                     31:        size_t           arglen, new_argc;
1.6     ! nicm       32:        char           **copy_argv, **new_argv;
        !            33:
        !            34:        copy_argv = cmd_copy_argv(argc, argv);
1.1       nicm       35:
                     36:        cmdlist = xmalloc(sizeof *cmdlist);
1.5       nicm       37:        cmdlist->references = 1;
                     38:        TAILQ_INIT(&cmdlist->list);
1.1       nicm       39:
                     40:        lastsplit = 0;
                     41:        for (i = 0; i < argc; i++) {
1.6     ! nicm       42:                arglen = strlen(copy_argv[i]);
        !            43:                if (arglen == 0 || copy_argv[i][arglen - 1] != ';')
1.1       nicm       44:                        continue;
1.6     ! nicm       45:                copy_argv[i][arglen - 1] = '\0';
1.1       nicm       46:
1.6     ! nicm       47:                if (arglen > 1 && copy_argv[i][arglen - 2] == '\\') {
        !            48:                        copy_argv[i][arglen - 2] = ';';
1.1       nicm       49:                        continue;
                     50:                }
                     51:
                     52:                new_argc = i - lastsplit;
1.6     ! nicm       53:                new_argv = copy_argv + lastsplit;
1.1       nicm       54:                if (arglen != 1)
                     55:                        new_argc++;
                     56:
                     57:                cmd = cmd_parse(new_argc, new_argv, cause);
                     58:                if (cmd == NULL)
                     59:                        goto bad;
1.5       nicm       60:                TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
1.1       nicm       61:
                     62:                lastsplit = i + 1;
                     63:        }
                     64:
                     65:        if (lastsplit != argc) {
1.6     ! nicm       66:                cmd = cmd_parse(argc - lastsplit, copy_argv + lastsplit, cause);
1.1       nicm       67:                if (cmd == NULL)
                     68:                        goto bad;
1.5       nicm       69:                TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
1.1       nicm       70:        }
                     71:
1.6     ! nicm       72:        cmd_free_argv(argc, copy_argv);
1.1       nicm       73:        return (cmdlist);
                     74:
                     75: bad:
                     76:        cmd_list_free(cmdlist);
1.6     ! nicm       77:        cmd_free_argv(argc, copy_argv);
1.1       nicm       78:        return (NULL);
                     79: }
                     80:
                     81: int
                     82: cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
                     83: {
                     84:        struct cmd      *cmd;
1.3       nicm       85:        int              n, retval;
1.1       nicm       86:
1.3       nicm       87:        retval = 0;
1.5       nicm       88:        TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
1.3       nicm       89:                if ((n = cmd_exec(cmd, ctx)) == -1)
                     90:                        return (-1);
                     91:
                     92:                /*
                     93:                 * A 1 return value means the command client is being attached
                     94:                 * (sent MSG_READY).
                     95:                 */
                     96:                if (n == 1) {
                     97:                        retval = 1;
                     98:
                     99:                        /*
                    100:                         * The command client has been attached, so mangle the
                    101:                         * context to treat any following commands as if they
                    102:                         * were called from inside.
                    103:                         */
                    104:                        if (ctx->curclient == NULL) {
                    105:                                ctx->curclient = ctx->cmdclient;
                    106:                                ctx->cmdclient = NULL;
1.4       nicm      107:
                    108:                                ctx->error = key_bindings_error;
                    109:                                ctx->print = key_bindings_print;
                    110:                                ctx->info = key_bindings_info;
1.3       nicm      111:                        }
                    112:                }
1.1       nicm      113:        }
1.3       nicm      114:        return (retval);
1.1       nicm      115: }
                    116:
                    117: void
                    118: cmd_list_free(struct cmd_list *cmdlist)
                    119: {
                    120:        struct cmd      *cmd;
                    121:
1.5       nicm      122:        if (--cmdlist->references != 0)
                    123:                return;
                    124:
                    125:        while (!TAILQ_EMPTY(&cmdlist->list)) {
                    126:                cmd = TAILQ_FIRST(&cmdlist->list);
                    127:                TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
1.1       nicm      128:                cmd_free(cmd);
                    129:        }
                    130:        xfree(cmdlist);
                    131: }
                    132:
                    133: size_t
                    134: cmd_list_print(struct cmd_list *cmdlist, char *buf, size_t len)
                    135: {
                    136:        struct cmd      *cmd;
                    137:        size_t           off;
                    138:
                    139:        off = 0;
1.5       nicm      140:        TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
1.1       nicm      141:                if (off >= len)
                    142:                        break;
                    143:                off += cmd_print(cmd, buf + off, len - off);
                    144:                if (off >= len)
                    145:                        break;
                    146:                if (TAILQ_NEXT(cmd, qentry) != NULL)
                    147:                        off += xsnprintf(buf + off, len - off, " ; ");
                    148:        }
                    149:        return (off);
                    150: }