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Annotation of src/usr.bin/tmux/cmd-list.c, Revision 1.1

1.1     ! nicm        1: /* $OpenBSD$ */
        !             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;
        !            32:        char           **new_argv;
        !            33:
        !            34:        cmdlist = xmalloc(sizeof *cmdlist);
        !            35:        TAILQ_INIT(cmdlist);
        !            36:
        !            37:        lastsplit = 0;
        !            38:        for (i = 0; i < argc; i++) {
        !            39:                arglen = strlen(argv[i]);
        !            40:                if (arglen == 0 || argv[i][arglen - 1] != ';')
        !            41:                        continue;
        !            42:                argv[i][arglen - 1] = '\0';
        !            43:
        !            44:                if (arglen > 1 && argv[i][arglen - 2] == '\\') {
        !            45:                        argv[i][arglen - 2] = ';';
        !            46:                        continue;
        !            47:                }
        !            48:
        !            49:                new_argc = i - lastsplit;
        !            50:                new_argv = argv + lastsplit;
        !            51:                if (arglen != 1)
        !            52:                        new_argc++;
        !            53:
        !            54:                cmd = cmd_parse(new_argc, new_argv, cause);
        !            55:                if (cmd == NULL)
        !            56:                        goto bad;
        !            57:                TAILQ_INSERT_TAIL(cmdlist, cmd, qentry);
        !            58:
        !            59:                lastsplit = i + 1;
        !            60:        }
        !            61:
        !            62:        if (lastsplit != argc) {
        !            63:                cmd = cmd_parse(argc - lastsplit, argv + lastsplit, cause);
        !            64:                if (cmd == NULL)
        !            65:                        goto bad;
        !            66:                TAILQ_INSERT_TAIL(cmdlist, cmd, qentry);
        !            67:        }
        !            68:
        !            69:        return (cmdlist);
        !            70:
        !            71: bad:
        !            72:        cmd_list_free(cmdlist);
        !            73:        return (NULL);
        !            74: }
        !            75:
        !            76: int
        !            77: cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
        !            78: {
        !            79:        struct cmd      *cmd;
        !            80:        int              n;
        !            81:
        !            82:        TAILQ_FOREACH(cmd, cmdlist, qentry) {
        !            83:                if ((n = cmd_exec(cmd, ctx)) != 0)
        !            84:                        return (n);
        !            85:        }
        !            86:        return (0);
        !            87: }
        !            88:
        !            89: void
        !            90: cmd_list_send(struct cmd_list *cmdlist, struct buffer *b)
        !            91: {
        !            92:        struct cmd      *cmd;
        !            93:        u_int            n;
        !            94:
        !            95:        n = 0;
        !            96:        TAILQ_FOREACH(cmd, cmdlist, qentry)
        !            97:                n++;
        !            98:
        !            99:        buffer_write(b, &n, sizeof n);
        !           100:        TAILQ_FOREACH(cmd, cmdlist, qentry)
        !           101:                cmd_send(cmd, b);
        !           102: }
        !           103:
        !           104: struct cmd_list *
        !           105: cmd_list_recv(struct buffer *b)
        !           106: {
        !           107:        struct cmd_list *cmdlist;
        !           108:        struct cmd      *cmd;
        !           109:        u_int            n;
        !           110:
        !           111:        buffer_read(b, &n, sizeof n);
        !           112:
        !           113:        cmdlist = xmalloc(sizeof *cmdlist);
        !           114:        TAILQ_INIT(cmdlist);
        !           115:
        !           116:        while (n-- > 0) {
        !           117:                cmd = cmd_recv(b);
        !           118:                TAILQ_INSERT_TAIL(cmdlist, cmd, qentry);
        !           119:        }
        !           120:
        !           121:        return (cmdlist);
        !           122: }
        !           123:
        !           124: void
        !           125: cmd_list_free(struct cmd_list *cmdlist)
        !           126: {
        !           127:        struct cmd      *cmd;
        !           128:
        !           129:        while (!TAILQ_EMPTY(cmdlist)) {
        !           130:                cmd = TAILQ_FIRST(cmdlist);
        !           131:                TAILQ_REMOVE(cmdlist, cmd, qentry);
        !           132:                cmd_free(cmd);
        !           133:        }
        !           134:        xfree(cmdlist);
        !           135: }
        !           136:
        !           137: size_t
        !           138: cmd_list_print(struct cmd_list *cmdlist, char *buf, size_t len)
        !           139: {
        !           140:        struct cmd      *cmd;
        !           141:        size_t           off;
        !           142:
        !           143:        off = 0;
        !           144:        TAILQ_FOREACH(cmd, cmdlist, qentry) {
        !           145:                if (off >= len)
        !           146:                        break;
        !           147:                off += cmd_print(cmd, buf + off, len - off);
        !           148:                if (off >= len)
        !           149:                        break;
        !           150:                if (TAILQ_NEXT(cmd, qentry) != NULL)
        !           151:                        off += xsnprintf(buf + off, len - off, " ; ");
        !           152:        }
        !           153:        return (off);
        !           154: }