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