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Annotation of src/usr.bin/tmux/cmd-list.c, Revision 1.17

1.17    ! nicm        1: /* $OpenBSD: cmd-list.c,v 1.16 2016/01/19 15:59:12 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.16      nicm        4:  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        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:
1.8       nicm       21: #include <stdlib.h>
1.1       nicm       22: #include <string.h>
                     23:
                     24: #include "tmux.h"
                     25:
1.17    ! nicm       26: static struct cmd_list *
        !            27: cmd_list_new(void)
        !            28: {
        !            29:        struct cmd_list *cmdlist;
        !            30:
        !            31:        cmdlist = xcalloc(1, sizeof *cmdlist);
        !            32:        cmdlist->references = 1;
        !            33:        TAILQ_INIT(&cmdlist->list);
        !            34:        return (cmdlist);
        !            35: }
        !            36:
1.1       nicm       37: struct cmd_list *
1.14      nicm       38: cmd_list_parse(int argc, char **argv, const char *file, u_int line,
1.12      nicm       39:     char **cause)
1.1       nicm       40: {
                     41:        struct cmd_list *cmdlist;
                     42:        struct cmd      *cmd;
                     43:        int              i, lastsplit;
                     44:        size_t           arglen, new_argc;
1.6       nicm       45:        char           **copy_argv, **new_argv;
                     46:
                     47:        copy_argv = cmd_copy_argv(argc, argv);
1.1       nicm       48:
1.17    ! nicm       49:        cmdlist = cmd_list_new();
1.1       nicm       50:
                     51:        lastsplit = 0;
                     52:        for (i = 0; i < argc; i++) {
1.6       nicm       53:                arglen = strlen(copy_argv[i]);
                     54:                if (arglen == 0 || copy_argv[i][arglen - 1] != ';')
1.1       nicm       55:                        continue;
1.6       nicm       56:                copy_argv[i][arglen - 1] = '\0';
1.1       nicm       57:
1.6       nicm       58:                if (arglen > 1 && copy_argv[i][arglen - 2] == '\\') {
                     59:                        copy_argv[i][arglen - 2] = ';';
1.1       nicm       60:                        continue;
                     61:                }
                     62:
                     63:                new_argc = i - lastsplit;
1.6       nicm       64:                new_argv = copy_argv + lastsplit;
1.1       nicm       65:                if (arglen != 1)
                     66:                        new_argc++;
                     67:
1.12      nicm       68:                cmd = cmd_parse(new_argc, new_argv, file, line, cause);
1.1       nicm       69:                if (cmd == NULL)
                     70:                        goto bad;
1.5       nicm       71:                TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
1.1       nicm       72:
                     73:                lastsplit = i + 1;
                     74:        }
                     75:
                     76:        if (lastsplit != argc) {
1.12      nicm       77:                cmd = cmd_parse(argc - lastsplit, copy_argv + lastsplit,
                     78:                    file, line, cause);
1.1       nicm       79:                if (cmd == NULL)
                     80:                        goto bad;
1.5       nicm       81:                TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
1.1       nicm       82:        }
                     83:
1.6       nicm       84:        cmd_free_argv(argc, copy_argv);
1.1       nicm       85:        return (cmdlist);
                     86:
                     87: bad:
                     88:        cmd_list_free(cmdlist);
1.6       nicm       89:        cmd_free_argv(argc, copy_argv);
1.1       nicm       90:        return (NULL);
                     91: }
                     92:
                     93: void
                     94: cmd_list_free(struct cmd_list *cmdlist)
                     95: {
1.12      nicm       96:        struct cmd      *cmd, *cmd1;
1.1       nicm       97:
1.5       nicm       98:        if (--cmdlist->references != 0)
                     99:                return;
                    100:
1.12      nicm      101:        TAILQ_FOREACH_SAFE(cmd, &cmdlist->list, qentry, cmd1) {
1.5       nicm      102:                TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
1.11      nicm      103:                args_free(cmd->args);
1.12      nicm      104:                free(cmd->file);
1.11      nicm      105:                free(cmd);
1.1       nicm      106:        }
1.12      nicm      107:
1.8       nicm      108:        free(cmdlist);
1.1       nicm      109: }
                    110:
1.15      nicm      111: char *
                    112: cmd_list_print(struct cmd_list *cmdlist)
1.1       nicm      113: {
                    114:        struct cmd      *cmd;
1.15      nicm      115:        char            *buf, *this;
                    116:        size_t           len;
                    117:
                    118:        len = 1;
                    119:        buf = xcalloc(1, len);
1.1       nicm      120:
1.5       nicm      121:        TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
1.15      nicm      122:                this = cmd_print(cmd);
                    123:
                    124:                len += strlen(this) + 3;
                    125:                buf = xrealloc(buf, len);
                    126:
                    127:                strlcat(buf, this, len);
                    128:                if (TAILQ_NEXT(cmd, qentry) != NULL)
                    129:                        strlcat(buf, " ; ", len);
                    130:
                    131:                free(this);
1.1       nicm      132:        }
1.15      nicm      133:
                    134:        return (buf);
1.1       nicm      135: }