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Annotation of embedaddon/tmux/cmd-list.c, revision 1.1.1.1

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