src/redis-cli.c

   1 /* Redis CLI (command line interface)
   2  *
   3  * Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  *   * Redistributions of source code must retain the above copyright notice,
  10  *     this list of conditions and the following disclaimer.
  11  *   * Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  *   * Neither the name of Redis nor the names of its contributors may be used
  15  *     to endorse or promote products derived from this software without
  16  *     specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "fmacros.h"
  32 #include "version.h"
  33
  34 #include <stdio.h>
  35 #include <string.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38 #include <ctype.h>
  39 #include <errno.h>
  40 #include <sys/stat.h>
  41 #include <sys/time.h>
  42 #include <assert.h>
  43
  44 #include "hiredis.h"
  45 #include "sds.h"
  46 #include "zmalloc.h"
  47 #include "linenoise.h"
  48 #include "help.h"
  49
  50 #define REDIS_NOTUSED(V) ((void) V)
  51
  52 static redisContext *context;
  53 static struct config {
  54     char *hostip;
  55     int hostport;
  56     char *hostsocket;
  57     long repeat;
  58     int dbnum;
  59     int interactive;
  60     int shutdown;
  61     int monitor_mode;
  62     int pubsub_mode;
  63     int stdinarg; /* get last arg from stdin. (-x option) */
  64     char *auth;
  65     int raw_output; /* output mode per command */
  66     sds mb_delim;
  67 } config;
  68
  69 static void usage();
  70 char *redisGitSHA1(void);
  71 char *redisGitDirty(void);
  72
  73 /*------------------------------------------------------------------------------
  74  * Utility functions
  75  *--------------------------------------------------------------------------- */
  76
  77 static long long mstime(void) {
  78     struct timeval tv;
  79     long long mst;
  80
  81     gettimeofday(&tv, NULL);
  82     mst = ((long)tv.tv_sec)*1000;
  83     mst += tv.tv_usec/1000;
  84     return mst;
  85 }
  86
  87 /*------------------------------------------------------------------------------
  88  * Help functions
  89  *--------------------------------------------------------------------------- */
  90
  91 #define CLI_HELP_COMMAND 1
  92 #define CLI_HELP_GROUP 2
  93
  94 typedef struct {
  95     int type;
  96     int argc;
  97     sds *argv;
  98     sds full;
  99
 100     /* Only used for help on commands */
 101     struct commandHelp *org;
 102 } helpEntry;
 103
 104 static helpEntry *helpEntries;
 105 static int helpEntriesLen;
 106
 107 static sds cliVersion() {
 108     sds version;
 109     version = sdscatprintf(sdsempty(), "%s", REDIS_VERSION);
 110
 111     /* Add git commit and working tree status when available */
 112     if (strtoll(redisGitSHA1(),NULL,16)) {
 113         version = sdscatprintf(version, " (git:%s", redisGitSHA1());
 114         if (strtoll(redisGitDirty(),NULL,10))
 115             version = sdscatprintf(version, "-dirty");
 116         version = sdscat(version, ")");
 117     }
 118     return version;
 119 }
 120
 121 static void cliInitHelp() {
 122     int commandslen = sizeof(commandHelp)/sizeof(struct commandHelp);
 123     int groupslen = sizeof(commandGroups)/sizeof(char*);
 124     int i, len, pos = 0;
 125     helpEntry tmp;
 126
 127     helpEntriesLen = len = commandslen+groupslen;
 128     helpEntries = malloc(sizeof(helpEntry)*len);
 129
 130     for (i = 0; i < groupslen; i++) {
 131         tmp.argc = 1;
 132         tmp.argv = malloc(sizeof(sds));
 133         tmp.argv[0] = sdscatprintf(sdsempty(),"@%s",commandGroups[i]);
 134         tmp.full = tmp.argv[0];
 135         tmp.type = CLI_HELP_GROUP;
 136         tmp.org = NULL;
 137         helpEntries[pos++] = tmp;
 138     }
 139
 140     for (i = 0; i < commandslen; i++) {
 141         tmp.argv = sdssplitargs(commandHelp[i].name,&tmp.argc);
 142         tmp.full = sdsnew(commandHelp[i].name);
 143         tmp.type = CLI_HELP_COMMAND;
 144         tmp.org = &commandHelp[i];
 145         helpEntries[pos++] = tmp;
 146     }
 147 }
 148
 149 /* Output command help to stdout. */
 150 static void cliOutputCommandHelp(struct commandHelp *help, int group) {
 151     printf("\r\n  \x1b[1m%s\x1b[0m \x1b[90m%s\x1b[0m\r\n", help->name, help->params);
 152     printf("  \x1b[33msummary:\x1b[0m %s\r\n", help->summary);
 153     printf("  \x1b[33msince:\x1b[0m %s\r\n", help->since);
 154     if (group) {
 155         printf("  \x1b[33mgroup:\x1b[0m %s\r\n", commandGroups[help->group]);
 156     }
 157 }
 158
 159 /* Print generic help. */
 160 static void cliOutputGenericHelp() {
 161     sds version = cliVersion();
 162     printf(
 163         "redis-cli %s\r\n"
 164         "Type: \"help @<group>\" to get a list of commands in <group>\r\n"
 165         "      \"help <command>\" for help on <command>\r\n"
 166         "      \"help <tab>\" to get a list of possible help topics\r\n"
 167         "      \"quit\" to exit\r\n",
 168         version
 169     );
 170     sdsfree(version);
 171 }
 172
 173 /* Output all command help, filtering by group or command name. */
 174 static void cliOutputHelp(int argc, char **argv) {
 175     int i, j, len;
 176     int group = -1;
 177     helpEntry *entry;
 178     struct commandHelp *help;
 179
 180     if (argc == 0) {
 181         cliOutputGenericHelp();
 182         return;
 183     } else if (argc > 0 && argv[0][0] == '@') {
 184         len = sizeof(commandGroups)/sizeof(char*);
 185         for (i = 0; i < len; i++) {
 186             if (strcasecmp(argv[0]+1,commandGroups[i]) == 0) {
 187                 group = i;
 188                 break;
 189             }
 190         }
 191     }
 192
 193     assert(argc > 0);
 194     for (i = 0; i < helpEntriesLen; i++) {
 195         entry = &helpEntries[i];
 196         if (entry->type != CLI_HELP_COMMAND) continue;
 197
 198         help = entry->org;
 199         if (group == -1) {
 200             /* Compare all arguments */
 201             if (argc == entry->argc) {
 202                 for (j = 0; j < argc; j++) {
 203                     if (strcasecmp(argv[j],entry->argv[j]) != 0) break;
 204                 }
 205                 if (j == argc) {
 206                     cliOutputCommandHelp(help,1);
 207                 }
 208             }
 209         } else {
 210             if (group == help->group) {
 211                 cliOutputCommandHelp(help,0);
 212             }
 213         }
 214     }
 215     printf("\r\n");
 216 }
 217
 218 static void completionCallback(const char *buf, linenoiseCompletions *lc) {
 219     size_t startpos = 0;
 220     int mask;
 221     int i;
 222     size_t matchlen;
 223     sds tmp;
 224
 225     if (strncasecmp(buf,"help ",5) == 0) {
 226         startpos = 5;
 227         while (isspace(buf[startpos])) startpos++;
 228         mask = CLI_HELP_COMMAND | CLI_HELP_GROUP;
 229     } else {
 230         mask = CLI_HELP_COMMAND;
 231     }
 232
 233     for (i = 0; i < helpEntriesLen; i++) {
 234         if (!(helpEntries[i].type & mask)) continue;
 235
 236         matchlen = strlen(buf+startpos);
 237         if (strncasecmp(buf+startpos,helpEntries[i].full,matchlen) == 0) {
 238             tmp = sdsnewlen(buf,startpos);
 239             tmp = sdscat(tmp,helpEntries[i].full);
 240             linenoiseAddCompletion(lc,tmp);
 241             sdsfree(tmp);
 242         }
 243     }
 244 }
 245
 246 /*------------------------------------------------------------------------------
 247  * Networking / parsing
 248  *--------------------------------------------------------------------------- */
 249
 250 /* Send AUTH command to the server */
 251 static int cliAuth() {
 252     redisReply *reply;
 253     if (config.auth == NULL) return REDIS_OK;
 254
 255     reply = redisCommand(context,"AUTH %s",config.auth);
 256     if (reply != NULL) {
 257         freeReplyObject(reply);
 258         return REDIS_OK;
 259     }
 260     return REDIS_ERR;
 261 }
 262
 263 /* Send SELECT dbnum to the server */
 264 static int cliSelect() {
 265     redisReply *reply;
 266     char dbnum[16];
 267     if (config.dbnum == 0) return REDIS_OK;
 268
 269     snprintf(dbnum,sizeof(dbnum),"%d",config.dbnum);
 270     reply = redisCommand(context,"SELECT %s",dbnum);
 271     if (reply != NULL) {
 272         freeReplyObject(reply);
 273         return REDIS_OK;
 274     }
 275     return REDIS_ERR;
 276 }
 277
 278 /* Connect to the client. If force is not zero the connection is performed
 279  * even if there is already a connected socket. */
 280 static int cliConnect(int force) {
 281     if (context == NULL || force) {
 282         if (context != NULL)
 283             redisFree(context);
 284
 285         if (config.hostsocket == NULL) {
 286             context = redisConnect(config.hostip,config.hostport);
 287         } else {
 288             context = redisConnectUnix(config.hostsocket);
 289         }
 290
 291         if (context->err) {
 292             fprintf(stderr,"Could not connect to Redis at ");
 293             if (config.hostsocket == NULL)
 294                 fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,context->errstr);
 295             else
 296                 fprintf(stderr,"%s: %s\n",config.hostsocket,context->errstr);
 297             redisFree(context);
 298             context = NULL;
 299             return REDIS_ERR;
 300         }
 301
 302         /* Do AUTH and select the right DB. */
 303         if (cliAuth() != REDIS_OK)
 304             return REDIS_ERR;
 305         if (cliSelect() != REDIS_OK)
 306             return REDIS_ERR;
 307     }
 308     return REDIS_OK;
 309 }
 310
 311 static void cliPrintContextErrorAndExit() {
 312     if (context == NULL) return;
 313     fprintf(stderr,"Error: %s\n",context->errstr);
 314     exit(1);
 315 }
 316
 317 static sds cliFormatReplyTTY(redisReply *r, char *prefix) {
 318     sds out = sdsempty();
 319     switch (r->type) {
 320     case REDIS_REPLY_ERROR:
 321         out = sdscatprintf(out,"(error) %s\n", r->str);
 322     break;
 323     case REDIS_REPLY_STATUS:
 324         out = sdscat(out,r->str);
 325         out = sdscat(out,"\n");
 326     break;
 327     case REDIS_REPLY_INTEGER:
 328         out = sdscatprintf(out,"(integer) %lld\n",r->integer);
 329     break;
 330     case REDIS_REPLY_STRING:
 331         /* If you are producing output for the standard output we want
 332         * a more interesting output with quoted characters and so forth */
 333         out = sdscatrepr(out,r->str,r->len);
 334         out = sdscat(out,"\n");
 335     break;
 336     case REDIS_REPLY_NIL:
 337         out = sdscat(out,"(nil)\n");
 338     break;
 339     case REDIS_REPLY_ARRAY:
 340         if (r->elements == 0) {
 341             out = sdscat(out,"(empty list or set)\n");
 342         } else {
 343             unsigned int i, idxlen = 0;
 344             char _prefixlen[16];
 345             char _prefixfmt[16];
 346             sds _prefix;
 347             sds tmp;
 348
 349             /* Calculate chars needed to represent the largest index */
 350             i = r->elements;
 351             do {
 352                 idxlen++;
 353                 i /= 10;
 354             } while(i);
 355
 356             /* Prefix for nested multi bulks should grow with idxlen+2 spaces */
 357             memset(_prefixlen,' ',idxlen+2);
 358             _prefixlen[idxlen+2] = '\0';
 359             _prefix = sdscat(sdsnew(prefix),_prefixlen);
 360
 361             /* Setup prefix format for every entry */
 362             snprintf(_prefixfmt,sizeof(_prefixfmt),"%%s%%%dd) ",idxlen);
 363
 364             for (i = 0; i < r->elements; i++) {
 365                 /* Don't use the prefix for the first element, as the parent
 366                  * caller already prepended the index number. */
 367                 out = sdscatprintf(out,_prefixfmt,i == 0 ? "" : prefix,i+1);
 368
 369                 /* Format the multi bulk entry */
 370                 tmp = cliFormatReplyTTY(r->element[i],_prefix);
 371                 out = sdscatlen(out,tmp,sdslen(tmp));
 372                 sdsfree(tmp);
 373             }
 374             sdsfree(_prefix);
 375         }
 376     break;
 377     default:
 378         fprintf(stderr,"Unknown reply type: %d\n", r->type);
 379         exit(1);
 380     }
 381     return out;
 382 }
 383
 384 static sds cliFormatReplyRaw(redisReply *r) {
 385     sds out = sdsempty(), tmp;
 386     size_t i;
 387
 388     switch (r->type) {
 389     case REDIS_REPLY_NIL:
 390         /* Nothing... */
 391     break;
 392     case REDIS_REPLY_ERROR:
 393     case REDIS_REPLY_STATUS:
 394     case REDIS_REPLY_STRING:
 395         out = sdscatlen(out,r->str,r->len);
 396     break;
 397     case REDIS_REPLY_INTEGER:
 398         out = sdscatprintf(out,"%lld",r->integer);
 399     break;
 400     case REDIS_REPLY_ARRAY:
 401         for (i = 0; i < r->elements; i++) {
 402             if (i > 0) out = sdscat(out,config.mb_delim);
 403             tmp = cliFormatReplyRaw(r->element[i]);
 404             out = sdscatlen(out,tmp,sdslen(tmp));
 405             sdsfree(tmp);
 406         }
 407     break;
 408     default:
 409         fprintf(stderr,"Unknown reply type: %d\n", r->type);
 410         exit(1);
 411     }
 412     return out;
 413 }
 414
 415 static int cliReadReply(int output_raw_strings) {
 416     void *_reply;
 417     redisReply *reply;
 418     sds out;
 419
 420     if (redisGetReply(context,&_reply) != REDIS_OK) {
 421         if (config.shutdown)
 422             return REDIS_OK;
 423         if (config.interactive) {
 424             /* Filter cases where we should reconnect */
 425             if (context->err == REDIS_ERR_IO && errno == ECONNRESET)
 426                 return REDIS_ERR;
 427             if (context->err == REDIS_ERR_EOF)
 428                 return REDIS_ERR;
 429         }
 430         cliPrintContextErrorAndExit();
 431         return REDIS_ERR; /* avoid compiler warning */
 432     }
 433
 434     reply = (redisReply*)_reply;
 435     if (output_raw_strings) {
 436         out = cliFormatReplyRaw(reply);
 437     } else {
 438         if (config.raw_output) {
 439             out = cliFormatReplyRaw(reply);
 440             out = sdscat(out,"\n");
 441         } else {
 442             out = cliFormatReplyTTY(reply,"");
 443         }
 444     }
 445     fwrite(out,sdslen(out),1,stdout);
 446     sdsfree(out);
 447     freeReplyObject(reply);
 448     return REDIS_OK;
 449 }
 450
 451 static int cliSendCommand(int argc, char **argv, int repeat) {
 452     char *command = argv[0];
 453     size_t *argvlen;
 454     int j, output_raw;
 455
 456     if (context == NULL) {
 457         printf("Not connected, please use: connect <host> <port>\n");
 458         return REDIS_OK;
 459     }
 460
 461     output_raw = !strcasecmp(command,"info");
 462     if (!strcasecmp(command,"help") || !strcasecmp(command,"?")) {
 463         cliOutputHelp(--argc, ++argv);
 464         return REDIS_OK;
 465     }
 466     if (!strcasecmp(command,"shutdown")) config.shutdown = 1;
 467     if (!strcasecmp(command,"monitor")) config.monitor_mode = 1;
 468     if (!strcasecmp(command,"subscribe") ||
 469         !strcasecmp(command,"psubscribe")) config.pubsub_mode = 1;
 470
 471     /* Setup argument length */
 472     argvlen = malloc(argc*sizeof(size_t));
 473     for (j = 0; j < argc; j++)
 474         argvlen[j] = sdslen(argv[j]);
 475
 476     while(repeat--) {
 477         redisAppendCommandArgv(context,argc,(const char**)argv,argvlen);
 478         while (config.monitor_mode) {
 479             if (cliReadReply(output_raw) != REDIS_OK) exit(1);
 480             fflush(stdout);
 481         }
 482
 483         if (config.pubsub_mode) {
 484             if (!config.raw_output)
 485                 printf("Reading messages... (press Ctrl-C to quit)\n");
 486             while (1) {
 487                 if (cliReadReply(output_raw) != REDIS_OK) exit(1);
 488             }
 489         }
 490
 491         if (cliReadReply(output_raw) != REDIS_OK)
 492             return REDIS_ERR;
 493     }
 494     return REDIS_OK;
 495 }
 496
 497 /*------------------------------------------------------------------------------
 498  * User interface
 499  *--------------------------------------------------------------------------- */
 500
 501 static int parseOptions(int argc, char **argv) {
 502     int i;
 503
 504     for (i = 1; i < argc; i++) {
 505         int lastarg = i==argc-1;
 506
 507         if (!strcmp(argv[i],"-h") && !lastarg) {
 508             sdsfree(config.hostip);
 509             config.hostip = sdsnew(argv[i+1]);
 510             i++;
 511         } else if (!strcmp(argv[i],"-h") && lastarg) {
 512             usage();
 513         } else if (!strcmp(argv[i],"--help")) {
 514             usage();
 515         } else if (!strcmp(argv[i],"-x")) {
 516             config.stdinarg = 1;
 517         } else if (!strcmp(argv[i],"-p") && !lastarg) {
 518             config.hostport = atoi(argv[i+1]);
 519             i++;
 520         } else if (!strcmp(argv[i],"-s") && !lastarg) {
 521             config.hostsocket = argv[i+1];
 522             i++;
 523         } else if (!strcmp(argv[i],"-r") && !lastarg) {
 524             config.repeat = strtoll(argv[i+1],NULL,10);
 525             i++;
 526         } else if (!strcmp(argv[i],"-n") && !lastarg) {
 527             config.dbnum = atoi(argv[i+1]);
 528             i++;
 529         } else if (!strcmp(argv[i],"-a") && !lastarg) {
 530             config.auth = argv[i+1];
 531             i++;
 532         } else if (!strcmp(argv[i],"--raw")) {
 533             config.raw_output = 1;
 534         } else if (!strcmp(argv[i],"-d") && !lastarg) {
 535             sdsfree(config.mb_delim);
 536             config.mb_delim = sdsnew(argv[i+1]);
 537             i++;
 538         } else if (!strcmp(argv[i],"-v") || !strcmp(argv[i], "--version")) {
 539             sds version = cliVersion();
 540             printf("redis-cli %s\n", version);
 541             sdsfree(version);
 542             exit(0);
 543         } else {
 544             break;
 545         }
 546     }
 547     return i;
 548 }
 549
 550 static sds readArgFromStdin(void) {
 551     char buf[1024];
 552     sds arg = sdsempty();
 553
 554     while(1) {
 555         int nread = read(fileno(stdin),buf,1024);
 556
 557         if (nread == 0) break;
 558         else if (nread == -1) {
 559             perror("Reading from standard input");
 560             exit(1);
 561         }
 562         arg = sdscatlen(arg,buf,nread);
 563     }
 564     return arg;
 565 }
 566
 567 static void usage() {
 568     sds version = cliVersion();
 569     fprintf(stderr,
 570 "redis-cli %s\n"
 571 "\n"
 572 "Usage: redis-cli [OPTIONS] [cmd [arg [arg ...]]]\n"
 573 "  -h <hostname>    Server hostname (default: 127.0.0.1)\n"
 574 "  -p <port>        Server port (default: 6379)\n"
 575 "  -s <socket>      Server socket (overrides hostname and port)\n"
 576 "  -a <password>    Password to use when connecting to the server\n"
 577 "  -r <repeat>      Execute specified command N times\n"
 578 "  -n <db>          Database number\n"
 579 "  -x               Read last argument from STDIN\n"
 580 "  -d <delimiter>   Multi-bulk delimiter in for raw formatting (default: \\n)\n"
 581 "  --raw            Use raw formatting for replies (default when STDOUT is not a tty)\n"
 582 "  --help           Output this help and exit\n"
 583 "  --version        Output version and exit\n"
 584 "\n"
 585 "Examples:\n"
 586 "  cat /etc/passwd | redis-cli -x set mypasswd\n"
 587 "  redis-cli get mypasswd\n"
 588 "  redis-cli -r 100 lpush mylist x\n"
 589 "\n"
 590 "When no command is given, redis-cli starts in interactive mode.\n"
 591 "Type \"help\" in interactive mode for information on available commands.\n"
 592 "\n",
 593         version);
 594     sdsfree(version);
 595     exit(1);
 596 }
 597
 598 /* Turn the plain C strings into Sds strings */
 599 static char **convertToSds(int count, char** args) {
 600   int j;
 601   char **sds = zmalloc(sizeof(char*)*count);
 602
 603   for(j = 0; j < count; j++)
 604     sds[j] = sdsnew(args[j]);
 605
 606   return sds;
 607 }
 608
 609 #define LINE_BUFLEN 4096
 610 static void repl() {
 611     sds historyfile = NULL;
 612     int history = 0;
 613     char *line;
 614     int argc;
 615     sds *argv;
 616
 617     config.interactive = 1;
 618     linenoiseSetCompletionCallback(completionCallback);
 619
 620     /* Only use history when stdin is a tty. */
 621     if (isatty(fileno(stdin))) {
 622         history = 1;
 623
 624         if (getenv("HOME") != NULL) {
 625             historyfile = sdscatprintf(sdsempty(),"%s/.rediscli_history",getenv("HOME"));
 626             linenoiseHistoryLoad(historyfile);
 627         }
 628     }
 629
 630     while((line = linenoise(context ? "redis> " : "not connected> ")) != NULL) {
 631         if (line[0] != '\0') {
 632             argv = sdssplitargs(line,&argc);
 633             if (history) linenoiseHistoryAdd(line);
 634             if (historyfile) linenoiseHistorySave(historyfile);
 635
 636             if (argv == NULL) {
 637                 printf("Invalid argument(s)\n");
 638                 continue;
 639             } else if (argc > 0) {
 640                 if (strcasecmp(argv[0],"quit") == 0 ||
 641                     strcasecmp(argv[0],"exit") == 0)
 642                 {
 643                     exit(0);
 644                 } else if (argc == 3 && !strcasecmp(argv[0],"connect")) {
 645                     sdsfree(config.hostip);
 646                     config.hostip = sdsnew(argv[1]);
 647                     config.hostport = atoi(argv[2]);
 648                     cliConnect(1);
 649                 } else if (argc == 1 && !strcasecmp(argv[0],"clear")) {
 650                     linenoiseClearScreen();
 651                 } else {
 652                     long long start_time = mstime(), elapsed;
 653
 654                     if (cliSendCommand(argc,argv,1) != REDIS_OK) {
 655                         cliConnect(1);
 656
 657                         /* If we still cannot send the command,
 658                          * print error and abort. */
 659                         if (cliSendCommand(argc,argv,1) != REDIS_OK)
 660                             cliPrintContextErrorAndExit();
 661                     }
 662                     elapsed = mstime()-start_time;
 663                     if (elapsed >= 500) {
 664                         printf("(%.2fs)\n",(double)elapsed/1000);
 665                     }
 666                 }
 667             }
 668             /* Free the argument vector */
 669             while(argc--) sdsfree(argv[argc]);
 670             zfree(argv);
 671         }
 672         /* linenoise() returns malloc-ed lines like readline() */
 673         free(line);
 674     }
 675     exit(0);
 676 }
 677
 678 static int noninteractive(int argc, char **argv) {
 679     int retval = 0;
 680     if (config.stdinarg) {
 681         argv = zrealloc(argv, (argc+1)*sizeof(char*));
 682         argv[argc] = readArgFromStdin();
 683         retval = cliSendCommand(argc+1, argv, config.repeat);
 684     } else {
 685         /* stdin is probably a tty, can be tested with S_ISCHR(s.st_mode) */
 686         retval = cliSendCommand(argc, argv, config.repeat);
 687     }
 688     return retval;
 689 }
 690
 691 int main(int argc, char **argv) {
 692     int firstarg;
 693
 694     config.hostip = sdsnew("127.0.0.1");
 695     config.hostport = 6379;
 696     config.hostsocket = NULL;
 697     config.repeat = 1;
 698     config.dbnum = 0;
 699     config.interactive = 0;
 700     config.shutdown = 0;
 701     config.monitor_mode = 0;
 702     config.pubsub_mode = 0;
 703     config.stdinarg = 0;
 704     config.auth = NULL;
 705     config.raw_output = !isatty(fileno(stdout)) && (getenv("FAKETTY") == NULL);
 706     config.mb_delim = sdsnew("\n");
 707     cliInitHelp();
 708
 709     firstarg = parseOptions(argc,argv);
 710     argc -= firstarg;
 711     argv += firstarg;
 712
 713     /* Try to connect */
 714     if (cliConnect(0) != REDIS_OK) exit(1);
 715
 716     /* Start interactive mode when no command is provided */
 717     if (argc == 0) repl();
 718     /* Otherwise, we have some arguments to execute */
 719     return noninteractive(argc,convertToSds(argc,argv));
 720 }