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     long interval;
  59     int dbnum;
  60     int interactive;
  61     int shutdown;
  62     int monitor_mode;
  63     int pubsub_mode;
  64     int latency_mode;
  65     int stdinarg; /* get last arg from stdin. (-x option) */
  66     char *auth;
  67     int raw_output; /* output mode per command */
  68     sds mb_delim;
  69     char prompt[32];
  70 } config;
  71
  72 static void usage();
  73 char *redisGitSHA1(void);
  74 char *redisGitDirty(void);
  75
  76 /*------------------------------------------------------------------------------
  77  * Utility functions
  78  *--------------------------------------------------------------------------- */
  79
  80 static long long mstime(void) {
  81     struct timeval tv;
  82     long long mst;
  83
  84     gettimeofday(&tv, NULL);
  85     mst = ((long)tv.tv_sec)*1000;
  86     mst += tv.tv_usec/1000;
  87     return mst;
  88 }
  89
  90 static void cliRefreshPrompt(void) {
  91     if (config.dbnum == 0)
  92         snprintf(config.prompt,sizeof(config.prompt),"redis %s:%d> ",
  93             config.hostip, config.hostport);
  94     else
  95         snprintf(config.prompt,sizeof(config.prompt),"redis %s:%d[%d]> ",
  96             config.hostip, config.hostport, config.dbnum);
  97 }
  98
  99 /*------------------------------------------------------------------------------
 100  * Help functions
 101  *--------------------------------------------------------------------------- */
 102
 103 #define CLI_HELP_COMMAND 1
 104 #define CLI_HELP_GROUP 2
 105
 106 typedef struct {
 107     int type;
 108     int argc;
 109     sds *argv;
 110     sds full;
 111
 112     /* Only used for help on commands */
 113     struct commandHelp *org;
 114 } helpEntry;
 115
 116 static helpEntry *helpEntries;
 117 static int helpEntriesLen;
 118
 119 static sds cliVersion() {
 120     sds version;
 121     version = sdscatprintf(sdsempty(), "%s", REDIS_VERSION);
 122
 123     /* Add git commit and working tree status when available */
 124     if (strtoll(redisGitSHA1(),NULL,16)) {
 125         version = sdscatprintf(version, " (git:%s", redisGitSHA1());
 126         if (strtoll(redisGitDirty(),NULL,10))
 127             version = sdscatprintf(version, "-dirty");
 128         version = sdscat(version, ")");
 129     }
 130     return version;
 131 }
 132
 133 static void cliInitHelp() {
 134     int commandslen = sizeof(commandHelp)/sizeof(struct commandHelp);
 135     int groupslen = sizeof(commandGroups)/sizeof(char*);
 136     int i, len, pos = 0;
 137     helpEntry tmp;
 138
 139     helpEntriesLen = len = commandslen+groupslen;
 140     helpEntries = malloc(sizeof(helpEntry)*len);
 141
 142     for (i = 0; i < groupslen; i++) {
 143         tmp.argc = 1;
 144         tmp.argv = malloc(sizeof(sds));
 145         tmp.argv[0] = sdscatprintf(sdsempty(),"@%s",commandGroups[i]);
 146         tmp.full = tmp.argv[0];
 147         tmp.type = CLI_HELP_GROUP;
 148         tmp.org = NULL;
 149         helpEntries[pos++] = tmp;
 150     }
 151
 152     for (i = 0; i < commandslen; i++) {
 153         tmp.argv = sdssplitargs(commandHelp[i].name,&tmp.argc);
 154         tmp.full = sdsnew(commandHelp[i].name);
 155         tmp.type = CLI_HELP_COMMAND;
 156         tmp.org = &commandHelp[i];
 157         helpEntries[pos++] = tmp;
 158     }
 159 }
 160
 161 /* Output command help to stdout. */
 162 static void cliOutputCommandHelp(struct commandHelp *help, int group) {
 163     printf("\r\n  \x1b[1m%s\x1b[0m \x1b[90m%s\x1b[0m\r\n", help->name, help->params);
 164     printf("  \x1b[33msummary:\x1b[0m %s\r\n", help->summary);
 165     printf("  \x1b[33msince:\x1b[0m %s\r\n", help->since);
 166     if (group) {
 167         printf("  \x1b[33mgroup:\x1b[0m %s\r\n", commandGroups[help->group]);
 168     }
 169 }
 170
 171 /* Print generic help. */
 172 static void cliOutputGenericHelp() {
 173     sds version = cliVersion();
 174     printf(
 175         "redis-cli %s\r\n"
 176         "Type: \"help @<group>\" to get a list of commands in <group>\r\n"
 177         "      \"help <command>\" for help on <command>\r\n"
 178         "      \"help <tab>\" to get a list of possible help topics\r\n"
 179         "      \"quit\" to exit\r\n",
 180         version
 181     );
 182     sdsfree(version);
 183 }
 184
 185 /* Output all command help, filtering by group or command name. */
 186 static void cliOutputHelp(int argc, char **argv) {
 187     int i, j, len;
 188     int group = -1;
 189     helpEntry *entry;
 190     struct commandHelp *help;
 191
 192     if (argc == 0) {
 193         cliOutputGenericHelp();
 194         return;
 195     } else if (argc > 0 && argv[0][0] == '@') {
 196         len = sizeof(commandGroups)/sizeof(char*);
 197         for (i = 0; i < len; i++) {
 198             if (strcasecmp(argv[0]+1,commandGroups[i]) == 0) {
 199                 group = i;
 200                 break;
 201             }
 202         }
 203     }
 204
 205     assert(argc > 0);
 206     for (i = 0; i < helpEntriesLen; i++) {
 207         entry = &helpEntries[i];
 208         if (entry->type != CLI_HELP_COMMAND) continue;
 209
 210         help = entry->org;
 211         if (group == -1) {
 212             /* Compare all arguments */
 213             if (argc == entry->argc) {
 214                 for (j = 0; j < argc; j++) {
 215                     if (strcasecmp(argv[j],entry->argv[j]) != 0) break;
 216                 }
 217                 if (j == argc) {
 218                     cliOutputCommandHelp(help,1);
 219                 }
 220             }
 221         } else {
 222             if (group == help->group) {
 223                 cliOutputCommandHelp(help,0);
 224             }
 225         }
 226     }
 227     printf("\r\n");
 228 }
 229
 230 static void completionCallback(const char *buf, linenoiseCompletions *lc) {
 231     size_t startpos = 0;
 232     int mask;
 233     int i;
 234     size_t matchlen;
 235     sds tmp;
 236
 237     if (strncasecmp(buf,"help ",5) == 0) {
 238         startpos = 5;
 239         while (isspace(buf[startpos])) startpos++;
 240         mask = CLI_HELP_COMMAND | CLI_HELP_GROUP;
 241     } else {
 242         mask = CLI_HELP_COMMAND;
 243     }
 244
 245     for (i = 0; i < helpEntriesLen; i++) {
 246         if (!(helpEntries[i].type & mask)) continue;
 247
 248         matchlen = strlen(buf+startpos);
 249         if (strncasecmp(buf+startpos,helpEntries[i].full,matchlen) == 0) {
 250             tmp = sdsnewlen(buf,startpos);
 251             tmp = sdscat(tmp,helpEntries[i].full);
 252             linenoiseAddCompletion(lc,tmp);
 253             sdsfree(tmp);
 254         }
 255     }
 256 }
 257
 258 /*------------------------------------------------------------------------------
 259  * Networking / parsing
 260  *--------------------------------------------------------------------------- */
 261
 262 /* Send AUTH command to the server */
 263 static int cliAuth() {
 264     redisReply *reply;
 265     if (config.auth == NULL) return REDIS_OK;
 266
 267     reply = redisCommand(context,"AUTH %s",config.auth);
 268     if (reply != NULL) {
 269         freeReplyObject(reply);
 270         return REDIS_OK;
 271     }
 272     return REDIS_ERR;
 273 }
 274
 275 /* Send SELECT dbnum to the server */
 276 static int cliSelect() {
 277     redisReply *reply;
 278     if (config.dbnum == 0) return REDIS_OK;
 279
 280     reply = redisCommand(context,"SELECT %d",config.dbnum);
 281     if (reply != NULL) {
 282         freeReplyObject(reply);
 283         return REDIS_OK;
 284     }
 285     return REDIS_ERR;
 286 }
 287
 288 /* Connect to the client. If force is not zero the connection is performed
 289  * even if there is already a connected socket. */
 290 static int cliConnect(int force) {
 291     if (context == NULL || force) {
 292         if (context != NULL)
 293             redisFree(context);
 294
 295         if (config.hostsocket == NULL) {
 296             context = redisConnect(config.hostip,config.hostport);
 297         } else {
 298             context = redisConnectUnix(config.hostsocket);
 299         }
 300
 301         if (context->err) {
 302             fprintf(stderr,"Could not connect to Redis at ");
 303             if (config.hostsocket == NULL)
 304                 fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,context->errstr);
 305             else
 306                 fprintf(stderr,"%s: %s\n",config.hostsocket,context->errstr);
 307             redisFree(context);
 308             context = NULL;
 309             return REDIS_ERR;
 310         }
 311
 312         /* Do AUTH and select the right DB. */
 313         if (cliAuth() != REDIS_OK)
 314             return REDIS_ERR;
 315         if (cliSelect() != REDIS_OK)
 316             return REDIS_ERR;
 317     }
 318     return REDIS_OK;
 319 }
 320
 321 static void cliPrintContextError() {
 322     if (context == NULL) return;
 323     fprintf(stderr,"Error: %s\n",context->errstr);
 324 }
 325
 326 static sds cliFormatReplyTTY(redisReply *r, char *prefix) {
 327     sds out = sdsempty();
 328     switch (r->type) {
 329     case REDIS_REPLY_ERROR:
 330         out = sdscatprintf(out,"(error) %s\n", r->str);
 331     break;
 332     case REDIS_REPLY_STATUS:
 333         out = sdscat(out,r->str);
 334         out = sdscat(out,"\n");
 335     break;
 336     case REDIS_REPLY_INTEGER:
 337         out = sdscatprintf(out,"(integer) %lld\n",r->integer);
 338     break;
 339     case REDIS_REPLY_STRING:
 340         /* If you are producing output for the standard output we want
 341         * a more interesting output with quoted characters and so forth */
 342         out = sdscatrepr(out,r->str,r->len);
 343         out = sdscat(out,"\n");
 344     break;
 345     case REDIS_REPLY_NIL:
 346         out = sdscat(out,"(nil)\n");
 347     break;
 348     case REDIS_REPLY_ARRAY:
 349         if (r->elements == 0) {
 350             out = sdscat(out,"(empty list or set)\n");
 351         } else {
 352             unsigned int i, idxlen = 0;
 353             char _prefixlen[16];
 354             char _prefixfmt[16];
 355             sds _prefix;
 356             sds tmp;
 357
 358             /* Calculate chars needed to represent the largest index */
 359             i = r->elements;
 360             do {
 361                 idxlen++;
 362                 i /= 10;
 363             } while(i);
 364
 365             /* Prefix for nested multi bulks should grow with idxlen+2 spaces */
 366             memset(_prefixlen,' ',idxlen+2);
 367             _prefixlen[idxlen+2] = '\0';
 368             _prefix = sdscat(sdsnew(prefix),_prefixlen);
 369
 370             /* Setup prefix format for every entry */
 371             snprintf(_prefixfmt,sizeof(_prefixfmt),"%%s%%%dd) ",idxlen);
 372
 373             for (i = 0; i < r->elements; i++) {
 374                 /* Don't use the prefix for the first element, as the parent
 375                  * caller already prepended the index number. */
 376                 out = sdscatprintf(out,_prefixfmt,i == 0 ? "" : prefix,i+1);
 377
 378                 /* Format the multi bulk entry */
 379                 tmp = cliFormatReplyTTY(r->element[i],_prefix);
 380                 out = sdscatlen(out,tmp,sdslen(tmp));
 381                 sdsfree(tmp);
 382             }
 383             sdsfree(_prefix);
 384         }
 385     break;
 386     default:
 387         fprintf(stderr,"Unknown reply type: %d\n", r->type);
 388         exit(1);
 389     }
 390     return out;
 391 }
 392
 393 static sds cliFormatReplyRaw(redisReply *r) {
 394     sds out = sdsempty(), tmp;
 395     size_t i;
 396
 397     switch (r->type) {
 398     case REDIS_REPLY_NIL:
 399         /* Nothing... */
 400         break;
 401     case REDIS_REPLY_ERROR:
 402         out = sdscatlen(out,r->str,r->len);
 403         out = sdscatlen(out,"\n",1);
 404         break;
 405     case REDIS_REPLY_STATUS:
 406     case REDIS_REPLY_STRING:
 407         out = sdscatlen(out,r->str,r->len);
 408         break;
 409     case REDIS_REPLY_INTEGER:
 410         out = sdscatprintf(out,"%lld",r->integer);
 411         break;
 412     case REDIS_REPLY_ARRAY:
 413         for (i = 0; i < r->elements; i++) {
 414             if (i > 0) out = sdscat(out,config.mb_delim);
 415             tmp = cliFormatReplyRaw(r->element[i]);
 416             out = sdscatlen(out,tmp,sdslen(tmp));
 417             sdsfree(tmp);
 418         }
 419         break;
 420     default:
 421         fprintf(stderr,"Unknown reply type: %d\n", r->type);
 422         exit(1);
 423     }
 424     return out;
 425 }
 426
 427 static int cliReadReply(int output_raw_strings) {
 428     void *_reply;
 429     redisReply *reply;
 430     sds out;
 431
 432     if (redisGetReply(context,&_reply) != REDIS_OK) {
 433         if (config.shutdown)
 434             return REDIS_OK;
 435         if (config.interactive) {
 436             /* Filter cases where we should reconnect */
 437             if (context->err == REDIS_ERR_IO && errno == ECONNRESET)
 438                 return REDIS_ERR;
 439             if (context->err == REDIS_ERR_EOF)
 440                 return REDIS_ERR;
 441         }
 442         cliPrintContextError();
 443         exit(1);
 444         return REDIS_ERR; /* avoid compiler warning */
 445     }
 446
 447     reply = (redisReply*)_reply;
 448     if (output_raw_strings) {
 449         out = cliFormatReplyRaw(reply);
 450     } else {
 451         if (config.raw_output) {
 452             out = cliFormatReplyRaw(reply);
 453             out = sdscat(out,"\n");
 454         } else {
 455             out = cliFormatReplyTTY(reply,"");
 456         }
 457     }
 458     fwrite(out,sdslen(out),1,stdout);
 459     sdsfree(out);
 460     freeReplyObject(reply);
 461     return REDIS_OK;
 462 }
 463
 464 static int cliSendCommand(int argc, char **argv, int repeat) {
 465     char *command = argv[0];
 466     size_t *argvlen;
 467     int j, output_raw;
 468
 469     if (context == NULL) return REDIS_ERR;
 470
 471     output_raw = 0;
 472     if (!strcasecmp(command,"info") ||
 473         (argc == 2 && !strcasecmp(command,"cluster") &&
 474                       (!strcasecmp(argv[1],"nodes") ||
 475                        !strcasecmp(argv[1],"info"))) ||
 476         (argc == 2 && !strcasecmp(command,"client") &&
 477                        !strcasecmp(argv[1],"list")))
 478
 479     {
 480         output_raw = 1;
 481     }
 482
 483     if (!strcasecmp(command,"help") || !strcasecmp(command,"?")) {
 484         cliOutputHelp(--argc, ++argv);
 485         return REDIS_OK;
 486     }
 487     if (!strcasecmp(command,"shutdown")) config.shutdown = 1;
 488     if (!strcasecmp(command,"monitor")) config.monitor_mode = 1;
 489     if (!strcasecmp(command,"subscribe") ||
 490         !strcasecmp(command,"psubscribe")) config.pubsub_mode = 1;
 491
 492     /* Setup argument length */
 493     argvlen = malloc(argc*sizeof(size_t));
 494     for (j = 0; j < argc; j++)
 495         argvlen[j] = sdslen(argv[j]);
 496
 497     while(repeat--) {
 498         redisAppendCommandArgv(context,argc,(const char**)argv,argvlen);
 499         while (config.monitor_mode) {
 500             if (cliReadReply(output_raw) != REDIS_OK) exit(1);
 501             fflush(stdout);
 502         }
 503
 504         if (config.pubsub_mode) {
 505             if (!config.raw_output)
 506                 printf("Reading messages... (press Ctrl-C to quit)\n");
 507             while (1) {
 508                 if (cliReadReply(output_raw) != REDIS_OK) exit(1);
 509             }
 510         }
 511
 512         if (cliReadReply(output_raw) != REDIS_OK) {
 513             free(argvlen);
 514             return REDIS_ERR;
 515         } else {
 516             /* Store database number when SELECT was successfully executed. */
 517             if (!strcasecmp(command,"select") && argc == 2) {
 518                 config.dbnum = atoi(argv[1]);
 519                 cliRefreshPrompt();
 520             }
 521         }
 522         if (config.interval) usleep(config.interval);
 523         fflush(stdout); /* Make it grep friendly */
 524     }
 525
 526     free(argvlen);
 527     return REDIS_OK;
 528 }
 529
 530 /*------------------------------------------------------------------------------
 531  * User interface
 532  *--------------------------------------------------------------------------- */
 533
 534 static int parseOptions(int argc, char **argv) {
 535     int i;
 536
 537     for (i = 1; i < argc; i++) {
 538         int lastarg = i==argc-1;
 539
 540         if (!strcmp(argv[i],"-h") && !lastarg) {
 541             sdsfree(config.hostip);
 542             config.hostip = sdsnew(argv[i+1]);
 543             i++;
 544         } else if (!strcmp(argv[i],"-h") && lastarg) {
 545             usage();
 546         } else if (!strcmp(argv[i],"--help")) {
 547             usage();
 548         } else if (!strcmp(argv[i],"-x")) {
 549             config.stdinarg = 1;
 550         } else if (!strcmp(argv[i],"-p") && !lastarg) {
 551             config.hostport = atoi(argv[i+1]);
 552             i++;
 553         } else if (!strcmp(argv[i],"-s") && !lastarg) {
 554             config.hostsocket = argv[i+1];
 555             i++;
 556         } else if (!strcmp(argv[i],"-r") && !lastarg) {
 557             config.repeat = strtoll(argv[i+1],NULL,10);
 558             i++;
 559         } else if (!strcmp(argv[i],"-i") && !lastarg) {
 560             double seconds = atof(argv[i+1]);
 561             config.interval = seconds*1000000;
 562             i++;
 563         } else if (!strcmp(argv[i],"-n") && !lastarg) {
 564             config.dbnum = atoi(argv[i+1]);
 565             i++;
 566         } else if (!strcmp(argv[i],"-a") && !lastarg) {
 567             config.auth = argv[i+1];
 568             i++;
 569         } else if (!strcmp(argv[i],"--raw")) {
 570             config.raw_output = 1;
 571         } else if (!strcmp(argv[i],"--latency")) {
 572             config.latency_mode = 1;
 573         } else if (!strcmp(argv[i],"-d") && !lastarg) {
 574             sdsfree(config.mb_delim);
 575             config.mb_delim = sdsnew(argv[i+1]);
 576             i++;
 577         } else if (!strcmp(argv[i],"-v") || !strcmp(argv[i], "--version")) {
 578             sds version = cliVersion();
 579             printf("redis-cli %s\n", version);
 580             sdsfree(version);
 581             exit(0);
 582         } else {
 583             break;
 584         }
 585     }
 586     return i;
 587 }
 588
 589 static sds readArgFromStdin(void) {
 590     char buf[1024];
 591     sds arg = sdsempty();
 592
 593     while(1) {
 594         int nread = read(fileno(stdin),buf,1024);
 595
 596         if (nread == 0) break;
 597         else if (nread == -1) {
 598             perror("Reading from standard input");
 599             exit(1);
 600         }
 601         arg = sdscatlen(arg,buf,nread);
 602     }
 603     return arg;
 604 }
 605
 606 static void usage() {
 607     sds version = cliVersion();
 608     fprintf(stderr,
 609 "redis-cli %s\n"
 610 "\n"
 611 "Usage: redis-cli [OPTIONS] [cmd [arg [arg ...]]]\n"
 612 "  -h <hostname>    Server hostname (default: 127.0.0.1)\n"
 613 "  -p <port>        Server port (default: 6379)\n"
 614 "  -s <socket>      Server socket (overrides hostname and port)\n"
 615 "  -a <password>    Password to use when connecting to the server\n"
 616 "  -r <repeat>      Execute specified command N times\n"
 617 "  -i <interval>    When -r is used, waits <interval> seconds per command.\n"
 618 "                   It is possible to specify sub-second times like -i 0.1.\n"
 619 "  -n <db>          Database number\n"
 620 "  -x               Read last argument from STDIN\n"
 621 "  -d <delimiter>   Multi-bulk delimiter in for raw formatting (default: \\n)\n"
 622 "  --raw            Use raw formatting for replies (default when STDOUT is not a tty)\n"
 623 "  --latency        Enter a special mode continuously sampling latency.\n"
 624 "  --help           Output this help and exit\n"
 625 "  --version        Output version and exit\n"
 626 "\n"
 627 "Examples:\n"
 628 "  cat /etc/passwd | redis-cli -x set mypasswd\n"
 629 "  redis-cli get mypasswd\n"
 630 "  redis-cli -r 100 lpush mylist x\n"
 631 "  redis-cli -r 100 -i 1 info | grep used_memory_human:\n"
 632 "\n"
 633 "When no command is given, redis-cli starts in interactive mode.\n"
 634 "Type \"help\" in interactive mode for information on available commands.\n"
 635 "\n",
 636         version);
 637     sdsfree(version);
 638     exit(1);
 639 }
 640
 641 /* Turn the plain C strings into Sds strings */
 642 static char **convertToSds(int count, char** args) {
 643   int j;
 644   char **sds = zmalloc(sizeof(char*)*count);
 645
 646   for(j = 0; j < count; j++)
 647     sds[j] = sdsnew(args[j]);
 648
 649   return sds;
 650 }
 651
 652 #define LINE_BUFLEN 4096
 653 static void repl() {
 654     sds historyfile = NULL;
 655     int history = 0;
 656     char *line;
 657     int argc;
 658     sds *argv;
 659
 660     config.interactive = 1;
 661     linenoiseSetCompletionCallback(completionCallback);
 662
 663     /* Only use history when stdin is a tty. */
 664     if (isatty(fileno(stdin))) {
 665         history = 1;
 666
 667         if (getenv("HOME") != NULL) {
 668             historyfile = sdscatprintf(sdsempty(),"%s/.rediscli_history",getenv("HOME"));
 669             linenoiseHistoryLoad(historyfile);
 670         }
 671     }
 672
 673     cliRefreshPrompt();
 674     while((line = linenoise(context ? config.prompt : "not connected> ")) != NULL) {
 675         if (line[0] != '\0') {
 676             argv = sdssplitargs(line,&argc);
 677             if (history) linenoiseHistoryAdd(line);
 678             if (historyfile) linenoiseHistorySave(historyfile);
 679
 680             if (argv == NULL) {
 681                 printf("Invalid argument(s)\n");
 682                 continue;
 683             } else if (argc > 0) {
 684                 if (strcasecmp(argv[0],"quit") == 0 ||
 685                     strcasecmp(argv[0],"exit") == 0)
 686                 {
 687                     exit(0);
 688                 } else if (argc == 3 && !strcasecmp(argv[0],"connect")) {
 689                     sdsfree(config.hostip);
 690                     config.hostip = sdsnew(argv[1]);
 691                     config.hostport = atoi(argv[2]);
 692                     cliConnect(1);
 693                 } else if (argc == 1 && !strcasecmp(argv[0],"clear")) {
 694                     linenoiseClearScreen();
 695                 } else {
 696                     long long start_time = mstime(), elapsed;
 697                     int repeat, skipargs = 0;
 698
 699                     repeat = atoi(argv[0]);
 700                     if (argc > 1 && repeat) {
 701                         skipargs = 1;
 702                     } else {
 703                         repeat = 1;
 704                     }
 705
 706                     if (cliSendCommand(argc-skipargs,argv+skipargs,repeat)
 707                         != REDIS_OK)
 708                     {
 709                         cliConnect(1);
 710
 711                         /* If we still cannot send the command print error.
 712                          * We'll try to reconnect the next time. */
 713                         if (cliSendCommand(argc-skipargs,argv+skipargs,repeat)
 714                             != REDIS_OK)
 715                             cliPrintContextError();
 716                     }
 717                     elapsed = mstime()-start_time;
 718                     if (elapsed >= 500) {
 719                         printf("(%.2fs)\n",(double)elapsed/1000);
 720                     }
 721                 }
 722             }
 723             /* Free the argument vector */
 724             while(argc--) sdsfree(argv[argc]);
 725             zfree(argv);
 726         }
 727         /* linenoise() returns malloc-ed lines like readline() */
 728         free(line);
 729     }
 730     exit(0);
 731 }
 732
 733 static int noninteractive(int argc, char **argv) {
 734     int retval = 0;
 735     if (config.stdinarg) {
 736         argv = zrealloc(argv, (argc+1)*sizeof(char*));
 737         argv[argc] = readArgFromStdin();
 738         retval = cliSendCommand(argc+1, argv, config.repeat);
 739     } else {
 740         /* stdin is probably a tty, can be tested with S_ISCHR(s.st_mode) */
 741         retval = cliSendCommand(argc, argv, config.repeat);
 742     }
 743     return retval;
 744 }
 745
 746 static void latencyMode(void) {
 747     redisReply *reply;
 748     long long start, latency, min, max, tot, count = 0;
 749     double avg;
 750
 751     if (!context) exit(1);
 752     while(1) {
 753         start = mstime();
 754         reply = redisCommand(context,"PING");
 755         if (reply == NULL) {
 756             fprintf(stderr,"\nI/O error\n");
 757             exit(1);
 758         }
 759         latency = mstime()-start;
 760         freeReplyObject(reply);
 761         count++;
 762         if (count == 1) {
 763             min = max = tot = latency;
 764             avg = (double) latency;
 765         } else {
 766             if (latency < min) min = latency;
 767             if (latency > max) max = latency;
 768             tot += latency;
 769             avg = (double) tot/count;
 770         }
 771         printf("\x1b[0G\x1b[2Kmin: %lld, max: %lld, avg: %.2f (%lld samples)",
 772             min, max, avg, count);
 773         fflush(stdout);
 774         usleep(10000);
 775     }
 776 }
 777
 778 int main(int argc, char **argv) {
 779     int firstarg;
 780
 781     config.hostip = sdsnew("127.0.0.1");
 782     config.hostport = 6379;
 783     config.hostsocket = NULL;
 784     config.repeat = 1;
 785     config.interval = 0;
 786     config.dbnum = 0;
 787     config.interactive = 0;
 788     config.shutdown = 0;
 789     config.monitor_mode = 0;
 790     config.pubsub_mode = 0;
 791     config.latency_mode = 0;
 792     config.stdinarg = 0;
 793     config.auth = NULL;
 794     config.raw_output = !isatty(fileno(stdout)) && (getenv("FAKETTY") == NULL);
 795     config.mb_delim = sdsnew("\n");
 796     cliInitHelp();
 797
 798     firstarg = parseOptions(argc,argv);
 799     argc -= firstarg;
 800     argv += firstarg;
 801
 802     /* Start in latency mode if appropriate */
 803     if (config.latency_mode) {
 804         cliConnect(0);
 805         latencyMode();
 806     }
 807
 808     /* Start interactive mode when no command is provided */
 809     if (argc == 0) {
 810         /* Note that in repl mode we don't abort on connection error.
 811          * A new attempt will be performed for every command send. */
 812         cliConnect(0);
 813         repl();
 814     }
 815
 816     /* Otherwise, we have some arguments to execute */
 817     if (cliConnect(0) != REDIS_OK) exit(1);
 818     return noninteractive(argc,convertToSds(argc,argv));
 819 }