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     char prompt[32];
  68 } config;
  69
  70 static void usage();
  71 char *redisGitSHA1(void);
  72 char *redisGitDirty(void);
  73
  74 /*------------------------------------------------------------------------------
  75  * Utility functions
  76  *--------------------------------------------------------------------------- */
  77
  78 static long long mstime(void) {
  79     struct timeval tv;
  80     long long mst;
  81
  82     gettimeofday(&tv, NULL);
  83     mst = ((long)tv.tv_sec)*1000;
  84     mst += tv.tv_usec/1000;
  85     return mst;
  86 }
  87
  88 static void cliRefreshPrompt(void) {
  89     if (config.dbnum == 0)
  90         snprintf(config.prompt,sizeof(config.prompt),"redis> ");
  91     else
  92         snprintf(config.prompt,sizeof(config.prompt),"redis:%d> ",config.dbnum);
  93 }
  94
  95 /*------------------------------------------------------------------------------
  96  * Help functions
  97  *--------------------------------------------------------------------------- */
  98
  99 #define CLI_HELP_COMMAND 1
 100 #define CLI_HELP_GROUP 2
 101
 102 typedef struct {
 103     int type;
 104     int argc;
 105     sds *argv;
 106     sds full;
 107
 108     /* Only used for help on commands */
 109     struct commandHelp *org;
 110 } helpEntry;
 111
 112 static helpEntry *helpEntries;
 113 static int helpEntriesLen;
 114
 115 static sds cliVersion() {
 116     sds version;
 117     version = sdscatprintf(sdsempty(), "%s", REDIS_VERSION);
 118
 119     /* Add git commit and working tree status when available */
 120     if (strtoll(redisGitSHA1(),NULL,16)) {
 121         version = sdscatprintf(version, " (git:%s", redisGitSHA1());
 122         if (strtoll(redisGitDirty(),NULL,10))
 123             version = sdscatprintf(version, "-dirty");
 124         version = sdscat(version, ")");
 125     }
 126     return version;
 127 }
 128
 129 static void cliInitHelp() {
 130     int commandslen = sizeof(commandHelp)/sizeof(struct commandHelp);
 131     int groupslen = sizeof(commandGroups)/sizeof(char*);
 132     int i, len, pos = 0;
 133     helpEntry tmp;
 134
 135     helpEntriesLen = len = commandslen+groupslen;
 136     helpEntries = malloc(sizeof(helpEntry)*len);
 137
 138     for (i = 0; i < groupslen; i++) {
 139         tmp.argc = 1;
 140         tmp.argv = malloc(sizeof(sds));
 141         tmp.argv[0] = sdscatprintf(sdsempty(),"@%s",commandGroups[i]);
 142         tmp.full = tmp.argv[0];
 143         tmp.type = CLI_HELP_GROUP;
 144         tmp.org = NULL;
 145         helpEntries[pos++] = tmp;
 146     }
 147
 148     for (i = 0; i < commandslen; i++) {
 149         tmp.argv = sdssplitargs(commandHelp[i].name,&tmp.argc);
 150         tmp.full = sdsnew(commandHelp[i].name);
 151         tmp.type = CLI_HELP_COMMAND;
 152         tmp.org = &commandHelp[i];
 153         helpEntries[pos++] = tmp;
 154     }
 155 }
 156
 157 /* Output command help to stdout. */
 158 static void cliOutputCommandHelp(struct commandHelp *help, int group) {
 159     printf("\r\n  \x1b[1m%s\x1b[0m \x1b[90m%s\x1b[0m\r\n", help->name, help->params);
 160     printf("  \x1b[33msummary:\x1b[0m %s\r\n", help->summary);
 161     printf("  \x1b[33msince:\x1b[0m %s\r\n", help->since);
 162     if (group) {
 163         printf("  \x1b[33mgroup:\x1b[0m %s\r\n", commandGroups[help->group]);
 164     }
 165 }
 166
 167 /* Print generic help. */
 168 static void cliOutputGenericHelp() {
 169     sds version = cliVersion();
 170     printf(
 171         "redis-cli %s\r\n"
 172         "Type: \"help @<group>\" to get a list of commands in <group>\r\n"
 173         "      \"help <command>\" for help on <command>\r\n"
 174         "      \"help <tab>\" to get a list of possible help topics\r\n"
 175         "      \"quit\" to exit\r\n",
 176         version
 177     );
 178     sdsfree(version);
 179 }
 180
 181 /* Output all command help, filtering by group or command name. */
 182 static void cliOutputHelp(int argc, char **argv) {
 183     int i, j, len;
 184     int group = -1;
 185     helpEntry *entry;
 186     struct commandHelp *help;
 187
 188     if (argc == 0) {
 189         cliOutputGenericHelp();
 190         return;
 191     } else if (argc > 0 && argv[0][0] == '@') {
 192         len = sizeof(commandGroups)/sizeof(char*);
 193         for (i = 0; i < len; i++) {
 194             if (strcasecmp(argv[0]+1,commandGroups[i]) == 0) {
 195                 group = i;
 196                 break;
 197             }
 198         }
 199     }
 200
 201     assert(argc > 0);
 202     for (i = 0; i < helpEntriesLen; i++) {
 203         entry = &helpEntries[i];
 204         if (entry->type != CLI_HELP_COMMAND) continue;
 205
 206         help = entry->org;
 207         if (group == -1) {
 208             /* Compare all arguments */
 209             if (argc == entry->argc) {
 210                 for (j = 0; j < argc; j++) {
 211                     if (strcasecmp(argv[j],entry->argv[j]) != 0) break;
 212                 }
 213                 if (j == argc) {
 214                     cliOutputCommandHelp(help,1);
 215                 }
 216             }
 217         } else {
 218             if (group == help->group) {
 219                 cliOutputCommandHelp(help,0);
 220             }
 221         }
 222     }
 223     printf("\r\n");
 224 }
 225
 226 static void completionCallback(const char *buf, linenoiseCompletions *lc) {
 227     size_t startpos = 0;
 228     int mask;
 229     int i;
 230     size_t matchlen;
 231     sds tmp;
 232
 233     if (strncasecmp(buf,"help ",5) == 0) {
 234         startpos = 5;
 235         while (isspace(buf[startpos])) startpos++;
 236         mask = CLI_HELP_COMMAND | CLI_HELP_GROUP;
 237     } else {
 238         mask = CLI_HELP_COMMAND;
 239     }
 240
 241     for (i = 0; i < helpEntriesLen; i++) {
 242         if (!(helpEntries[i].type & mask)) continue;
 243
 244         matchlen = strlen(buf+startpos);
 245         if (strncasecmp(buf+startpos,helpEntries[i].full,matchlen) == 0) {
 246             tmp = sdsnewlen(buf,startpos);
 247             tmp = sdscat(tmp,helpEntries[i].full);
 248             linenoiseAddCompletion(lc,tmp);
 249             sdsfree(tmp);
 250         }
 251     }
 252 }
 253
 254 /*------------------------------------------------------------------------------
 255  * Networking / parsing
 256  *--------------------------------------------------------------------------- */
 257
 258 /* Send AUTH command to the server */
 259 static int cliAuth() {
 260     redisReply *reply;
 261     if (config.auth == NULL) return REDIS_OK;
 262
 263     reply = redisCommand(context,"AUTH %s",config.auth);
 264     if (reply != NULL) {
 265         freeReplyObject(reply);
 266         return REDIS_OK;
 267     }
 268     return REDIS_ERR;
 269 }
 270
 271 /* Send SELECT dbnum to the server */
 272 static int cliSelect() {
 273     redisReply *reply;
 274     if (config.dbnum == 0) return REDIS_OK;
 275
 276     reply = redisCommand(context,"SELECT %d",config.dbnum);
 277     if (reply != NULL) {
 278         freeReplyObject(reply);
 279         return REDIS_OK;
 280     }
 281     return REDIS_ERR;
 282 }
 283
 284 /* Connect to the client. If force is not zero the connection is performed
 285  * even if there is already a connected socket. */
 286 static int cliConnect(int force) {
 287     if (context == NULL || force) {
 288         if (context != NULL)
 289             redisFree(context);
 290
 291         if (config.hostsocket == NULL) {
 292             context = redisConnect(config.hostip,config.hostport);
 293         } else {
 294             context = redisConnectUnix(config.hostsocket);
 295         }
 296
 297         if (context->err) {
 298             fprintf(stderr,"Could not connect to Redis at ");
 299             if (config.hostsocket == NULL)
 300                 fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,context->errstr);
 301             else
 302                 fprintf(stderr,"%s: %s\n",config.hostsocket,context->errstr);
 303             redisFree(context);
 304             context = NULL;
 305             return REDIS_ERR;
 306         }
 307
 308         /* Do AUTH and select the right DB. */
 309         if (cliAuth() != REDIS_OK)
 310             return REDIS_ERR;
 311         if (cliSelect() != REDIS_OK)
 312             return REDIS_ERR;
 313     }
 314     return REDIS_OK;
 315 }
 316
 317 static void cliPrintContextErrorAndExit() {
 318     if (context == NULL) return;
 319     fprintf(stderr,"Error: %s\n",context->errstr);
 320     exit(1);
 321 }
 322
 323 static sds cliFormatReplyTTY(redisReply *r, char *prefix) {
 324     sds out = sdsempty();
 325     switch (r->type) {
 326     case REDIS_REPLY_ERROR:
 327         out = sdscatprintf(out,"(error) %s\n", r->str);
 328     break;
 329     case REDIS_REPLY_STATUS:
 330         out = sdscat(out,r->str);
 331         out = sdscat(out,"\n");
 332     break;
 333     case REDIS_REPLY_INTEGER:
 334         out = sdscatprintf(out,"(integer) %lld\n",r->integer);
 335     break;
 336     case REDIS_REPLY_STRING:
 337         /* If you are producing output for the standard output we want
 338         * a more interesting output with quoted characters and so forth */
 339         out = sdscatrepr(out,r->str,r->len);
 340         out = sdscat(out,"\n");
 341     break;
 342     case REDIS_REPLY_NIL:
 343         out = sdscat(out,"(nil)\n");
 344     break;
 345     case REDIS_REPLY_ARRAY:
 346         if (r->elements == 0) {
 347             out = sdscat(out,"(empty list or set)\n");
 348         } else {
 349             unsigned int i, idxlen = 0;
 350             char _prefixlen[16];
 351             char _prefixfmt[16];
 352             sds _prefix;
 353             sds tmp;
 354
 355             /* Calculate chars needed to represent the largest index */
 356             i = r->elements;
 357             do {
 358                 idxlen++;
 359                 i /= 10;
 360             } while(i);
 361
 362             /* Prefix for nested multi bulks should grow with idxlen+2 spaces */
 363             memset(_prefixlen,' ',idxlen+2);
 364             _prefixlen[idxlen+2] = '\0';
 365             _prefix = sdscat(sdsnew(prefix),_prefixlen);
 366
 367             /* Setup prefix format for every entry */
 368             snprintf(_prefixfmt,sizeof(_prefixfmt),"%%s%%%dd) ",idxlen);
 369
 370             for (i = 0; i < r->elements; i++) {
 371                 /* Don't use the prefix for the first element, as the parent
 372                  * caller already prepended the index number. */
 373                 out = sdscatprintf(out,_prefixfmt,i == 0 ? "" : prefix,i+1);
 374
 375                 /* Format the multi bulk entry */
 376                 tmp = cliFormatReplyTTY(r->element[i],_prefix);
 377                 out = sdscatlen(out,tmp,sdslen(tmp));
 378                 sdsfree(tmp);
 379             }
 380             sdsfree(_prefix);
 381         }
 382     break;
 383     default:
 384         fprintf(stderr,"Unknown reply type: %d\n", r->type);
 385         exit(1);
 386     }
 387     return out;
 388 }
 389
 390 static sds cliFormatReplyRaw(redisReply *r) {
 391     sds out = sdsempty(), tmp;
 392     size_t i;
 393
 394     switch (r->type) {
 395     case REDIS_REPLY_NIL:
 396         /* Nothing... */
 397         break;
 398     case REDIS_REPLY_ERROR:
 399         out = sdscatlen(out,r->str,r->len);
 400         out = sdscatlen(out,"\n",1);
 401         break;
 402     case REDIS_REPLY_STATUS:
 403     case REDIS_REPLY_STRING:
 404         out = sdscatlen(out,r->str,r->len);
 405         break;
 406     case REDIS_REPLY_INTEGER:
 407         out = sdscatprintf(out,"%lld",r->integer);
 408         break;
 409     case REDIS_REPLY_ARRAY:
 410         for (i = 0; i < r->elements; i++) {
 411             if (i > 0) out = sdscat(out,config.mb_delim);
 412             tmp = cliFormatReplyRaw(r->element[i]);
 413             out = sdscatlen(out,tmp,sdslen(tmp));
 414             sdsfree(tmp);
 415         }
 416         break;
 417     default:
 418         fprintf(stderr,"Unknown reply type: %d\n", r->type);
 419         exit(1);
 420     }
 421     return out;
 422 }
 423
 424 static int cliReadReply(int output_raw_strings) {
 425     void *_reply;
 426     redisReply *reply;
 427     sds out;
 428
 429     if (redisGetReply(context,&_reply) != REDIS_OK) {
 430         if (config.shutdown)
 431             return REDIS_OK;
 432         if (config.interactive) {
 433             /* Filter cases where we should reconnect */
 434             if (context->err == REDIS_ERR_IO && errno == ECONNRESET)
 435                 return REDIS_ERR;
 436             if (context->err == REDIS_ERR_EOF)
 437                 return REDIS_ERR;
 438         }
 439         cliPrintContextErrorAndExit();
 440         return REDIS_ERR; /* avoid compiler warning */
 441     }
 442
 443     reply = (redisReply*)_reply;
 444     if (output_raw_strings) {
 445         out = cliFormatReplyRaw(reply);
 446     } else {
 447         if (config.raw_output) {
 448             out = cliFormatReplyRaw(reply);
 449             out = sdscat(out,"\n");
 450         } else {
 451             out = cliFormatReplyTTY(reply,"");
 452         }
 453     }
 454     fwrite(out,sdslen(out),1,stdout);
 455     sdsfree(out);
 456     freeReplyObject(reply);
 457     return REDIS_OK;
 458 }
 459
 460 static int cliSendCommand(int argc, char **argv, int repeat) {
 461     char *command = argv[0];
 462     size_t *argvlen;
 463     int j, output_raw;
 464
 465     if (context == NULL) {
 466         printf("Not connected, please use: connect <host> <port>\n");
 467         return REDIS_OK;
 468     }
 469
 470     output_raw = 0;
 471     if (!strcasecmp(command,"info") ||
 472         (argc == 2 && !strcasecmp(command,"cluster") &&
 473                       (!strcasecmp(argv[1],"nodes") ||
 474                        !strcasecmp(argv[1],"info"))) ||
 475         (argc == 2 && !strcasecmp(command,"client") &&
 476                        !strcasecmp(argv[1],"list")))
 477
 478     {
 479         output_raw = 1;
 480     }
 481
 482     if (!strcasecmp(command,"help") || !strcasecmp(command,"?")) {
 483         cliOutputHelp(--argc, ++argv);
 484         return REDIS_OK;
 485     }
 486     if (!strcasecmp(command,"shutdown")) config.shutdown = 1;
 487     if (!strcasecmp(command,"monitor")) config.monitor_mode = 1;
 488     if (!strcasecmp(command,"subscribe") ||
 489         !strcasecmp(command,"psubscribe")) config.pubsub_mode = 1;
 490
 491     /* Setup argument length */
 492     argvlen = malloc(argc*sizeof(size_t));
 493     for (j = 0; j < argc; j++)
 494         argvlen[j] = sdslen(argv[j]);
 495
 496     while(repeat--) {
 497         redisAppendCommandArgv(context,argc,(const char**)argv,argvlen);
 498         while (config.monitor_mode) {
 499             if (cliReadReply(output_raw) != REDIS_OK) exit(1);
 500             fflush(stdout);
 501         }
 502
 503         if (config.pubsub_mode) {
 504             if (!config.raw_output)
 505                 printf("Reading messages... (press Ctrl-C to quit)\n");
 506             while (1) {
 507                 if (cliReadReply(output_raw) != REDIS_OK) exit(1);
 508             }
 509         }
 510
 511         if (cliReadReply(output_raw) != REDIS_OK) {
 512             free(argvlen);
 513             return REDIS_ERR;
 514         } else {
 515             /* Store database number when SELECT was successfully executed. */
 516             if (!strcasecmp(command,"select") && argc == 2) {
 517                 config.dbnum = atoi(argv[1]);
 518                 cliRefreshPrompt();
 519             }
 520         }
 521     }
 522
 523     free(argvlen);
 524     return REDIS_OK;
 525 }
 526
 527 /*------------------------------------------------------------------------------
 528  * User interface
 529  *--------------------------------------------------------------------------- */
 530
 531 static int parseOptions(int argc, char **argv) {
 532     int i;
 533
 534     for (i = 1; i < argc; i++) {
 535         int lastarg = i==argc-1;
 536
 537         if (!strcmp(argv[i],"-h") && !lastarg) {
 538             sdsfree(config.hostip);
 539             config.hostip = sdsnew(argv[i+1]);
 540             i++;
 541         } else if (!strcmp(argv[i],"-h") && lastarg) {
 542             usage();
 543         } else if (!strcmp(argv[i],"--help")) {
 544             usage();
 545         } else if (!strcmp(argv[i],"-x")) {
 546             config.stdinarg = 1;
 547         } else if (!strcmp(argv[i],"-p") && !lastarg) {
 548             config.hostport = atoi(argv[i+1]);
 549             i++;
 550         } else if (!strcmp(argv[i],"-s") && !lastarg) {
 551             config.hostsocket = argv[i+1];
 552             i++;
 553         } else if (!strcmp(argv[i],"-r") && !lastarg) {
 554             config.repeat = strtoll(argv[i+1],NULL,10);
 555             i++;
 556         } else if (!strcmp(argv[i],"-n") && !lastarg) {
 557             config.dbnum = atoi(argv[i+1]);
 558             i++;
 559         } else if (!strcmp(argv[i],"-a") && !lastarg) {
 560             config.auth = argv[i+1];
 561             i++;
 562         } else if (!strcmp(argv[i],"--raw")) {
 563             config.raw_output = 1;
 564         } else if (!strcmp(argv[i],"-d") && !lastarg) {
 565             sdsfree(config.mb_delim);
 566             config.mb_delim = sdsnew(argv[i+1]);
 567             i++;
 568         } else if (!strcmp(argv[i],"-v") || !strcmp(argv[i], "--version")) {
 569             sds version = cliVersion();
 570             printf("redis-cli %s\n", version);
 571             sdsfree(version);
 572             exit(0);
 573         } else {
 574             break;
 575         }
 576     }
 577     return i;
 578 }
 579
 580 static sds readArgFromStdin(void) {
 581     char buf[1024];
 582     sds arg = sdsempty();
 583
 584     while(1) {
 585         int nread = read(fileno(stdin),buf,1024);
 586
 587         if (nread == 0) break;
 588         else if (nread == -1) {
 589             perror("Reading from standard input");
 590             exit(1);
 591         }
 592         arg = sdscatlen(arg,buf,nread);
 593     }
 594     return arg;
 595 }
 596
 597 static void usage() {
 598     sds version = cliVersion();
 599     fprintf(stderr,
 600 "redis-cli %s\n"
 601 "\n"
 602 "Usage: redis-cli [OPTIONS] [cmd [arg [arg ...]]]\n"
 603 "  -h <hostname>    Server hostname (default: 127.0.0.1)\n"
 604 "  -p <port>        Server port (default: 6379)\n"
 605 "  -s <socket>      Server socket (overrides hostname and port)\n"
 606 "  -a <password>    Password to use when connecting to the server\n"
 607 "  -r <repeat>      Execute specified command N times\n"
 608 "  -n <db>          Database number\n"
 609 "  -x               Read last argument from STDIN\n"
 610 "  -d <delimiter>   Multi-bulk delimiter in for raw formatting (default: \\n)\n"
 611 "  --raw            Use raw formatting for replies (default when STDOUT is not a tty)\n"
 612 "  --help           Output this help and exit\n"
 613 "  --version        Output version and exit\n"
 614 "\n"
 615 "Examples:\n"
 616 "  cat /etc/passwd | redis-cli -x set mypasswd\n"
 617 "  redis-cli get mypasswd\n"
 618 "  redis-cli -r 100 lpush mylist x\n"
 619 "\n"
 620 "When no command is given, redis-cli starts in interactive mode.\n"
 621 "Type \"help\" in interactive mode for information on available commands.\n"
 622 "\n",
 623         version);
 624     sdsfree(version);
 625     exit(1);
 626 }
 627
 628 /* Turn the plain C strings into Sds strings */
 629 static char **convertToSds(int count, char** args) {
 630   int j;
 631   char **sds = zmalloc(sizeof(char*)*count);
 632
 633   for(j = 0; j < count; j++)
 634     sds[j] = sdsnew(args[j]);
 635
 636   return sds;
 637 }
 638
 639 #define LINE_BUFLEN 4096
 640 static void repl() {
 641     sds historyfile = NULL;
 642     int history = 0;
 643     char *line;
 644     int argc;
 645     sds *argv;
 646
 647     config.interactive = 1;
 648     linenoiseSetCompletionCallback(completionCallback);
 649
 650     /* Only use history when stdin is a tty. */
 651     if (isatty(fileno(stdin))) {
 652         history = 1;
 653
 654         if (getenv("HOME") != NULL) {
 655             historyfile = sdscatprintf(sdsempty(),"%s/.rediscli_history",getenv("HOME"));
 656             linenoiseHistoryLoad(historyfile);
 657         }
 658     }
 659
 660     cliRefreshPrompt();
 661     while((line = linenoise(context ? config.prompt : "not connected> ")) != NULL) {
 662         if (line[0] != '\0') {
 663             argv = sdssplitargs(line,&argc);
 664             if (history) linenoiseHistoryAdd(line);
 665             if (historyfile) linenoiseHistorySave(historyfile);
 666
 667             if (argv == NULL) {
 668                 printf("Invalid argument(s)\n");
 669                 continue;
 670             } else if (argc > 0) {
 671                 if (strcasecmp(argv[0],"quit") == 0 ||
 672                     strcasecmp(argv[0],"exit") == 0)
 673                 {
 674                     exit(0);
 675                 } else if (argc == 3 && !strcasecmp(argv[0],"connect")) {
 676                     sdsfree(config.hostip);
 677                     config.hostip = sdsnew(argv[1]);
 678                     config.hostport = atoi(argv[2]);
 679                     cliConnect(1);
 680                 } else if (argc == 1 && !strcasecmp(argv[0],"clear")) {
 681                     linenoiseClearScreen();
 682                 } else {
 683                     long long start_time = mstime(), elapsed;
 684
 685                     if (cliSendCommand(argc,argv,1) != REDIS_OK) {
 686                         cliConnect(1);
 687
 688                         /* If we still cannot send the command,
 689                          * print error and abort. */
 690                         if (cliSendCommand(argc,argv,1) != REDIS_OK)
 691                             cliPrintContextErrorAndExit();
 692                     }
 693                     elapsed = mstime()-start_time;
 694                     if (elapsed >= 500) {
 695                         printf("(%.2fs)\n",(double)elapsed/1000);
 696                     }
 697                 }
 698             }
 699             /* Free the argument vector */
 700             while(argc--) sdsfree(argv[argc]);
 701             zfree(argv);
 702         }
 703         /* linenoise() returns malloc-ed lines like readline() */
 704         free(line);
 705     }
 706     exit(0);
 707 }
 708
 709 static int noninteractive(int argc, char **argv) {
 710     int retval = 0;
 711     if (config.stdinarg) {
 712         argv = zrealloc(argv, (argc+1)*sizeof(char*));
 713         argv[argc] = readArgFromStdin();
 714         retval = cliSendCommand(argc+1, argv, config.repeat);
 715     } else {
 716         /* stdin is probably a tty, can be tested with S_ISCHR(s.st_mode) */
 717         retval = cliSendCommand(argc, argv, config.repeat);
 718     }
 719     return retval;
 720 }
 721
 722 int main(int argc, char **argv) {
 723     int firstarg;
 724
 725     config.hostip = sdsnew("127.0.0.1");
 726     config.hostport = 6379;
 727     config.hostsocket = NULL;
 728     config.repeat = 1;
 729     config.dbnum = 0;
 730     config.interactive = 0;
 731     config.shutdown = 0;
 732     config.monitor_mode = 0;
 733     config.pubsub_mode = 0;
 734     config.stdinarg = 0;
 735     config.auth = NULL;
 736     config.raw_output = !isatty(fileno(stdout)) && (getenv("FAKETTY") == NULL);
 737     config.mb_delim = sdsnew("\n");
 738     cliInitHelp();
 739
 740     firstarg = parseOptions(argc,argv);
 741     argc -= firstarg;
 742     argv += firstarg;
 743
 744     /* Try to connect */
 745     if (cliConnect(0) != REDIS_OK) exit(1);
 746
 747     /* Start interactive mode when no command is provided */
 748     if (argc == 0) repl();
 749     /* Otherwise, we have some arguments to execute */
 750     return noninteractive(argc,convertToSds(argc,argv));
 751 }