X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/99628c1af8ab2a2af4f2baf7039c08acdf0974ce..339b9dc2d2e7d319e29581b367a1027365186cc3:/src/redis-cli.c

diff --git a/src/redis-cli.c b/src/redis-cli.c
index dac82862..fec0fce4 100644
--- a/src/redis-cli.c
+++ b/src/redis-cli.c
@@ -36,255 +36,280 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <ctype.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
 
-#include "anet.h"
+#include "hiredis.h"
 #include "sds.h"
-#include "adlist.h"
 #include "zmalloc.h"
 #include "linenoise.h"
 
-#define REDIS_CMD_INLINE 1
-#define REDIS_CMD_BULK 2
-#define REDIS_CMD_MULTIBULK 4
-
 #define REDIS_NOTUSED(V) ((void) V)
 
+static redisContext *context;
 static struct config {
     char *hostip;
     int hostport;
+    char *hostsocket;
     long repeat;
     int dbnum;
-    int argn_from_stdin;
     int interactive;
     int shutdown;
     int monitor_mode;
     int pubsub_mode;
-    int raw_output;
+    int raw_output; /* output mode per command */
+    int tty; /* flag for default output format */
+    int stdinarg; /* get last arg from stdin. (-x option) */
+    char mb_sep;
     char *auth;
     char *historyfile;
 } config;
 
-static int cliReadReply(int fd);
 static void usage();
 
-static int cliConnect(void) {
-    char err[ANET_ERR_LEN];
-    static int fd = ANET_ERR;
-
-    if (fd == ANET_ERR) {
-        fd = anetTcpConnect(err,config.hostip,config.hostport);
-        if (fd == ANET_ERR) {
-            fprintf(stderr, "Could not connect to Redis at %s:%d: %s", config.hostip, config.hostport, err);
-            return -1;
-        }
-        anetTcpNoDelay(NULL,fd);
-    }
-    return fd;
-}
+/*------------------------------------------------------------------------------
+ * Utility functions
+ *--------------------------------------------------------------------------- */
 
-static sds cliReadLine(int fd) {
-    sds line = sdsempty();
+static long long mstime(void) {
+    struct timeval tv;
+    long long mst;
 
-    while(1) {
-        char c;
-        ssize_t ret;
-
-        ret = read(fd,&c,1);
-        if (ret == -1) {
-            sdsfree(line);
-            return NULL;
-        } else if ((ret == 0) || (c == '\n')) {
-            break;
-        } else {
-            line = sdscatlen(line,&c,1);
-        }
-    }
-    return sdstrim(line,"\r\n");
+    gettimeofday(&tv, NULL);
+    mst = ((long)tv.tv_sec)*1000;
+    mst += tv.tv_usec/1000;
+    return mst;
 }
 
-static int cliReadSingleLineReply(int fd, int quiet) {
-    sds reply = cliReadLine(fd);
+/*------------------------------------------------------------------------------
+ * Networking / parsing
+ *--------------------------------------------------------------------------- */
 
-    if (reply == NULL) return 1;
-    if (!quiet)
-        printf("%s\n", reply);
-    sdsfree(reply);
-    return 0;
-}
+/* Send AUTH command to the server */
+static int cliAuth() {
+    redisReply *reply;
+    if (config.auth == NULL) return REDIS_OK;
 
-static void printStringRepr(char *s, int len) {
-    printf("\"");
-    while(len--) {
-        switch(*s) {
-        case '\\':
-        case '"':
-            printf("\\%c",*s);
-            break;
-        case '\n': printf("\\n"); break;
-        case '\r': printf("\\r"); break;
-        case '\t': printf("\\t"); break;
-        case '\a': printf("\\a"); break;
-        case '\b': printf("\\b"); break;
-        default:
-            if (isprint(*s))
-                printf("%c",*s);
-            else
-                printf("\\x%02x",(unsigned char)*s);
-            break;
-        }
-        s++;
+    reply = redisCommand(context,"AUTH %s",config.auth);
+    if (reply != NULL) {
+        freeReplyObject(reply);
+        return REDIS_OK;
     }
-    printf("\"\n");
+    return REDIS_ERR;
 }
 
-static int cliReadBulkReply(int fd) {
-    sds replylen = cliReadLine(fd);
-    char *reply, crlf[2];
-    int bulklen;
-
-    if (replylen == NULL) return 1;
-    bulklen = atoi(replylen);
-    if (bulklen == -1) {
-        sdsfree(replylen);
-        printf("(nil)\n");
-        return 0;
+/* Send SELECT dbnum to the server */
+static int cliSelect() {
+    redisReply *reply;
+    char dbnum[16];
+    if (config.dbnum == 0) return REDIS_OK;
+
+    snprintf(dbnum,sizeof(dbnum),"%d",config.dbnum);
+    reply = redisCommand(context,"SELECT %s",dbnum);
+    if (reply != NULL) {
+        freeReplyObject(reply);
+        return REDIS_OK;
     }
-    reply = zmalloc(bulklen);
-    anetRead(fd,reply,bulklen);
-    anetRead(fd,crlf,2);
-    if (config.raw_output || !isatty(fileno(stdout))) {
-        if (bulklen && fwrite(reply,bulklen,1,stdout) == 0) {
-            zfree(reply);
-            return 1;
-        }
-    } else {
-        /* If you are producing output for the standard output we want
-         * a more interesting output with quoted characters and so forth */
-        printStringRepr(reply,bulklen);
-    }
-    zfree(reply);
-    return 0;
+    return REDIS_ERR;
 }
 
-static int cliReadMultiBulkReply(int fd) {
-    sds replylen = cliReadLine(fd);
-    int elements, c = 1;
+/* Connect to the client. If force is not zero the connection is performed
+ * even if there is already a connected socket. */
+static int cliConnect(int force) {
+    if (context == NULL || force) {
+        if (context != NULL)
+            redisFree(context);
 
-    if (replylen == NULL) return 1;
-    elements = atoi(replylen);
-    if (elements == -1) {
-        sdsfree(replylen);
-        printf("(nil)\n");
-        return 0;
-    }
-    if (elements == 0) {
-        printf("(empty list or set)\n");
-    }
-    while(elements--) {
-        printf("%d. ", c);
-        if (cliReadReply(fd)) return 1;
-        c++;
+        if (config.hostsocket == NULL) {
+            context = redisConnect(config.hostip,config.hostport);
+        } else {
+            context = redisConnectUnix(config.hostsocket);
+        }
+
+        if (context->err) {
+            fprintf(stderr,"Could not connect to Redis at ");
+            if (config.hostsocket == NULL)
+                fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,context->errstr);
+            else
+                fprintf(stderr,"%s: %s\n",config.hostsocket,context->errstr);
+            redisFree(context);
+            context = NULL;
+            return REDIS_ERR;
+        }
+
+        /* Do AUTH and select the right DB. */
+        if (cliAuth() != REDIS_OK)
+            return REDIS_ERR;
+        if (cliSelect() != REDIS_OK)
+            return REDIS_ERR;
     }
-    return 0;
+    return REDIS_OK;
 }
 
-static int cliReadReply(int fd) {
-    char type;
+static void cliPrintContextErrorAndExit() {
+    if (context == NULL) return;
+    fprintf(stderr,"Error: %s\n",context->errstr);
+    exit(1);
+}
 
-    if (anetRead(fd,&type,1) <= 0) {
-        if (config.shutdown) return 0;
-        exit(1);
-    }
-    switch(type) {
-    case '-':
-        printf("(error) ");
-        cliReadSingleLineReply(fd,0);
-        return 1;
-    case '+':
-        return cliReadSingleLineReply(fd,0);
-    case ':':
-        printf("(integer) ");
-        return cliReadSingleLineReply(fd,0);
-    case '$':
-        return cliReadBulkReply(fd);
-    case '*':
-        return cliReadMultiBulkReply(fd);
+static sds cliFormatReply(redisReply *r, char *prefix) {
+    sds out = sdsempty();
+    switch (r->type) {
+    case REDIS_REPLY_ERROR:
+        if (config.tty) out = sdscat(out,"(error) ");
+        out = sdscatprintf(out,"%s\n", r->str);
+    break;
+    case REDIS_REPLY_STATUS:
+        out = sdscat(out,r->str);
+        out = sdscat(out,"\n");
+    break;
+    case REDIS_REPLY_INTEGER:
+        if (config.tty) out = sdscat(out,"(integer) ");
+        out = sdscatprintf(out,"%lld\n",r->integer);
+    break;
+    case REDIS_REPLY_STRING:
+        if (config.raw_output || !config.tty) {
+            out = sdscatlen(out,r->str,r->len);
+        } else {
+            /* If you are producing output for the standard output we want
+             * a more interesting output with quoted characters and so forth */
+            out = sdscatrepr(out,r->str,r->len);
+            out = sdscat(out,"\n");
+        }
+    break;
+    case REDIS_REPLY_NIL:
+        out = sdscat(out,"(nil)\n");
+    break;
+    case REDIS_REPLY_ARRAY:
+        if (r->elements == 0) {
+            out = sdscat(out,"(empty list or set)\n");
+        } else {
+            unsigned int i, idxlen = 0;
+            char _prefixlen[16];
+            char _prefixfmt[16];
+            sds _prefix;
+            sds tmp;
+
+            /* Calculate chars needed to represent the largest index */
+            i = r->elements;
+            do {
+                idxlen++;
+                i /= 10;
+            } while(i);
+
+            /* Prefix for nested multi bulks should grow with idxlen+2 spaces */
+            memset(_prefixlen,' ',idxlen+2);
+            _prefixlen[idxlen+2] = '\0';
+            _prefix = sdscat(sdsnew(prefix),_prefixlen);
+
+            /* Setup prefix format for every entry */
+            snprintf(_prefixfmt,sizeof(_prefixfmt),"%%s%%%dd) ",idxlen);
+
+            for (i = 0; i < r->elements; i++) {
+                /* Don't use the prefix for the first element, as the parent
+                 * caller already prepended the index number. */
+                out = sdscatprintf(out,_prefixfmt,i == 0 ? "" : prefix,i+1);
+
+                /* Format the multi bulk entry */
+                tmp = cliFormatReply(r->element[i],_prefix);
+                out = sdscatlen(out,tmp,sdslen(tmp));
+                sdsfree(tmp);
+            }
+            sdsfree(_prefix);
+        }
+    break;
     default:
-        printf("protocol error, got '%c' as reply type byte\n", type);
-        return 1;
+        fprintf(stderr,"Unknown reply type: %d\n", r->type);
+        exit(1);
     }
+    return out;
 }
 
-static int selectDb(int fd) {
-    int retval;
-    sds cmd;
-    char type;
-
-    if (config.dbnum == 0)
-        return 0;
-
-    cmd = sdsempty();
-    cmd = sdscatprintf(cmd,"SELECT %d\r\n",config.dbnum);
-    anetWrite(fd,cmd,sdslen(cmd));
-    anetRead(fd,&type,1);
-    if (type <= 0 || type != '+') return 1;
-    retval = cliReadSingleLineReply(fd,1);
-    if (retval) {
-        return retval;
+static int cliReadReply() {
+    redisReply *reply;
+    sds out;
+
+    if (redisGetReply(context,(void**)&reply) != REDIS_OK) {
+        if (config.shutdown)
+            return REDIS_OK;
+        if (config.interactive) {
+            /* Filter cases where we should reconnect */
+            if (context->err == REDIS_ERR_IO && errno == ECONNRESET)
+                return REDIS_ERR;
+            if (context->err == REDIS_ERR_EOF)
+                return REDIS_ERR;
+        }
+        cliPrintContextErrorAndExit();
+        return REDIS_ERR; /* avoid compiler warning */
     }
-    return 0;
+
+    out = cliFormatReply(reply,"");
+    freeReplyObject(reply);
+    fwrite(out,sdslen(out),1,stdout);
+    sdsfree(out);
+    return REDIS_OK;
+}
+
+static void showInteractiveHelp(void) {
+    printf(
+    "\n"
+    "Welcome to redis-cli " REDIS_VERSION "!\n"
+    "Just type any valid Redis command to see a pretty printed output.\n"
+    "\n"
+    "It is possible to quote strings, like in:\n"
+    "  set \"my key\" \"some string \\xff\\n\"\n"
+    "\n"
+    "You can find a list of valid Redis commands at\n"
+    "  http://code.google.com/p/redis/wiki/CommandReference\n"
+    "\n"
+    "Note: redis-cli supports line editing, use up/down arrows for history."
+    "\n\n");
 }
 
 static int cliSendCommand(int argc, char **argv, int repeat) {
     char *command = argv[0];
-    int fd, j, retval = 0;
-    sds cmd;
+    size_t *argvlen;
+    int j;
 
     config.raw_output = !strcasecmp(command,"info");
+    if (!strcasecmp(command,"help")) {
+        showInteractiveHelp();
+        return REDIS_OK;
+    }
     if (!strcasecmp(command,"shutdown")) config.shutdown = 1;
     if (!strcasecmp(command,"monitor")) config.monitor_mode = 1;
     if (!strcasecmp(command,"subscribe") ||
         !strcasecmp(command,"psubscribe")) config.pubsub_mode = 1;
-    if ((fd = cliConnect()) == -1) return 1;
-
-    /* Select db number */
-    retval = selectDb(fd);
-    if (retval) {
-        fprintf(stderr,"Error setting DB num\n");
-        return 1;
-    }
 
-    /* Build the command to send */
-    cmd = sdscatprintf(sdsempty(),"*%d\r\n",argc);
-    for (j = 0; j < argc; j++) {
-        cmd = sdscatprintf(cmd,"$%lu\r\n",
-            (unsigned long)sdslen(argv[j]));
-        cmd = sdscatlen(cmd,argv[j],sdslen(argv[j]));
-        cmd = sdscatlen(cmd,"\r\n",2);
-    }
+    /* Setup argument length */
+    argvlen = malloc(argc*sizeof(size_t));
+    for (j = 0; j < argc; j++)
+        argvlen[j] = sdslen(argv[j]);
 
     while(repeat--) {
-        anetWrite(fd,cmd,sdslen(cmd));
+        redisAppendCommandArgv(context,argc,(const char**)argv,argvlen);
         while (config.monitor_mode) {
-            cliReadSingleLineReply(fd,0);
+            if (cliReadReply() != REDIS_OK) exit(1);
         }
 
         if (config.pubsub_mode) {
-            printf("Reading messages... (press Ctrl-c to quit)\n");
+            printf("Reading messages... (press Ctrl-C to quit)\n");
             while (1) {
-                cliReadReply(fd);
-                printf("\n");
+                if (cliReadReply() != REDIS_OK) exit(1);
             }
         }
 
-        retval = cliReadReply(fd);
-        if (retval) {
-            return retval;
-        }
+        if (cliReadReply() != REDIS_OK)
+            return REDIS_ERR;
     }
-    return 0;
+    return REDIS_OK;
 }
 
+/*------------------------------------------------------------------------------
+ * User interface
+ *--------------------------------------------------------------------------- */
+
 static int parseOptions(int argc, char **argv) {
     int i;
 
@@ -292,18 +317,18 @@ static int parseOptions(int argc, char **argv) {
         int lastarg = i==argc-1;
 
         if (!strcmp(argv[i],"-h") && !lastarg) {
-            char *ip = zmalloc(32);
-            if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
-                printf("Can't resolve %s\n", argv[i]);
-                exit(1);
-            }
-            config.hostip = ip;
+            config.hostip = argv[i+1];
             i++;
         } else if (!strcmp(argv[i],"-h") && lastarg) {
             usage();
+        } else if (!strcmp(argv[i],"-x")) {
+            config.stdinarg = 1;
         } else if (!strcmp(argv[i],"-p") && !lastarg) {
             config.hostport = atoi(argv[i+1]);
             i++;
+        } else if (!strcmp(argv[i],"-s") && !lastarg) {
+            config.hostsocket = argv[i+1];
+            i++;
         } else if (!strcmp(argv[i],"-r") && !lastarg) {
             config.repeat = strtoll(argv[i+1],NULL,10);
             i++;
@@ -314,11 +339,18 @@ static int parseOptions(int argc, char **argv) {
             config.auth = argv[i+1];
             i++;
         } else if (!strcmp(argv[i],"-i")) {
-            config.interactive = 1;
+            fprintf(stderr,
+"Starting interactive mode using -i is deprecated. Interactive mode is started\n"
+"by default when redis-cli is executed without a command to execute.\n"
+            );
         } else if (!strcmp(argv[i],"-c")) {
-            config.argn_from_stdin = 1;
+            fprintf(stderr,
+"Reading last argument from standard input using -c is deprecated.\n"
+"When standard input is connected to a pipe or regular file, it is\n"
+"automatically used as last argument.\n"
+            );
         } else if (!strcmp(argv[i],"-v")) {
-            printf("redis-cli shipped with Redis verison %s\n", REDIS_VERSION);
+            printf("redis-cli shipped with Redis version %s\n", REDIS_VERSION);
             exit(0);
         } else {
             break;
@@ -345,10 +377,9 @@ static sds readArgFromStdin(void) {
 }
 
 static void usage() {
-    fprintf(stderr, "usage: redis-cli [-iv] [-h host] [-p port] [-a authpw] [-r repeat_times] [-n db_num] cmd arg1 arg2 arg3 ... argN\n");
-    fprintf(stderr, "usage: echo \"argN\" | redis-cli -c [-h host] [-p port] [-a authpw] [-r repeat_times] [-n db_num] cmd arg1 arg2 ... arg(N-1)\n");
-    fprintf(stderr, "\nIf a pipe from standard input is detected this data is used as last argument.\n\n");
-    fprintf(stderr, "example: cat /etc/passwd | redis-cli set my_passwd\n");
+    fprintf(stderr, "usage: redis-cli [-iv] [-h host] [-p port] [-s /path/to/socket] [-a authpw] [-r repeat_times] [-n db_num] cmd arg1 arg2 arg3 ... argN\n");
+    fprintf(stderr, "usage: echo \"argN\" | redis-cli -x [options] cmd arg1 arg2 ... arg(N-1)\n\n");
+    fprintf(stderr, "example: cat /etc/passwd | redis-cli -x set my_passwd\n");
     fprintf(stderr, "example: redis-cli get my_passwd\n");
     fprintf(stderr, "example: redis-cli -r 100 lpush mylist x\n");
     fprintf(stderr, "\nRun in interactive mode: redis-cli -i or just don't pass any command\n");
@@ -366,87 +397,45 @@ static char **convertToSds(int count, char** args) {
   return sds;
 }
 
-static char **splitArguments(char *line, int *argc) {
-    char *p = line;
-    char *current = NULL;
-    char **vector = NULL;
-
-    *argc = 0;
-    while(1) {
-        /* skip blanks */
-        while(*p && isspace(*p)) p++;
-        if (*p) {
-            /* get a token */
-            int inq=0; /* set to 1 if we are in "quotes" */
-            int done = 0;
-
-            if (current == NULL) current = sdsempty();
-            while(!done) {
-                if (inq) {
-                    if (*p == '\\' && *(p+1)) {
-                        char c;
-
-                        p++;
-                        switch(*p) {
-                        case 'n': c = '\n'; break;
-                        case 'r': c = '\r'; break;
-                        case 't': c = '\t'; break;
-                        case 'b': c = '\b'; break;
-                        case 'a': c = '\a'; break;
-                        default: c = *p; break;
-                        }
-                        current = sdscatlen(current,&c,1);
-                    } else if (*p == '"') {
-                        done = 1;
-                    } else {
-                        current = sdscatlen(current,p,1);
-                    }
-                } else {
-                    switch(*p) {
-                    case ' ':
-                    case '\n':
-                    case '\r':
-                    case '\t':
-                    case '\0':
-                        done=1;
-                        break;
-                    case '"':
-                        inq=1;
-                        break;
-                    default:
-                        current = sdscatlen(current,p,1);
-                        break;
-                    }
-                }
-                if (*p) p++;
-            }
-            /* add the token to the vector */
-            vector = zrealloc(vector,((*argc)+1)*sizeof(char*));
-            vector[*argc] = current;
-            (*argc)++;
-            current = NULL;
-        } else {
-            return vector;
-        }
-    }
-}
-
 #define LINE_BUFLEN 4096
 static void repl() {
     int argc, j;
-    char *line, **argv;
+    char *line;
+    sds *argv;
 
+    config.interactive = 1;
     while((line = linenoise("redis> ")) != NULL) {
         if (line[0] != '\0') {
-            argv = splitArguments(line,&argc);
+            argv = sdssplitargs(line,&argc);
             linenoiseHistoryAdd(line);
             if (config.historyfile) linenoiseHistorySave(config.historyfile);
-            if (argc > 0) {
+            if (argv == NULL) {
+                printf("Invalid argument(s)\n");
+                continue;
+            } else if (argc > 0) {
                 if (strcasecmp(argv[0],"quit") == 0 ||
                     strcasecmp(argv[0],"exit") == 0)
-                        exit(0);
-                else
-                    cliSendCommand(argc, argv, 1);
+                {
+                    exit(0);
+                } else {
+                    long long start_time = mstime(), elapsed;
+
+                    if (cliSendCommand(argc,argv,1) != REDIS_OK) {
+                        printf("Reconnecting... ");
+                        fflush(stdout);
+                        if (cliConnect(1) != REDIS_OK) exit(1);
+                        printf("OK\n");
+
+                        /* If we still cannot send the command,
+                         * print error and abort. */
+                        if (cliSendCommand(argc,argv,1) != REDIS_OK)
+                            cliPrintContextErrorAndExit();
+                    }
+                    elapsed = mstime()-start_time;
+                    if (elapsed >= 500) {
+                        printf("(%.2fs)\n",(double)elapsed/1000);
+                    }
+                }
             }
             /* Free the argument vector */
             for (j = 0; j < argc; j++)
@@ -459,22 +448,37 @@ static void repl() {
     exit(0);
 }
 
+static int noninteractive(int argc, char **argv) {
+    int retval = 0;
+    if (config.stdinarg) {
+        argv = zrealloc(argv, (argc+1)*sizeof(char*));
+        argv[argc] = readArgFromStdin();
+        retval = cliSendCommand(argc+1, argv, config.repeat);
+    } else {
+        /* stdin is probably a tty, can be tested with S_ISCHR(s.st_mode) */
+        retval = cliSendCommand(argc, argv, config.repeat);
+    }
+    return retval;
+}
+
 int main(int argc, char **argv) {
     int firstarg;
-    char **argvcopy;
 
     config.hostip = "127.0.0.1";
     config.hostport = 6379;
+    config.hostsocket = NULL;
     config.repeat = 1;
     config.dbnum = 0;
-    config.argn_from_stdin = 0;
-    config.shutdown = 0;
     config.interactive = 0;
+    config.shutdown = 0;
     config.monitor_mode = 0;
     config.pubsub_mode = 0;
     config.raw_output = 0;
+    config.stdinarg = 0;
     config.auth = NULL;
     config.historyfile = NULL;
+    config.tty = isatty(fileno(stdout)) || (getenv("FAKETTY") != NULL);
+    config.mb_sep = '\n';
 
     if (getenv("HOME") != NULL) {
         config.historyfile = malloc(256);
@@ -486,21 +490,11 @@ int main(int argc, char **argv) {
     argc -= firstarg;
     argv += firstarg;
 
-    if (config.auth != NULL) {
-        char *authargv[2];
+    /* Try to connect */
+    if (cliConnect(0) != REDIS_OK) exit(1);
 
-        authargv[0] = "AUTH";
-        authargv[1] = config.auth;
-        cliSendCommand(2, convertToSds(2, authargv), 1);
-    }
-
-    if (argc == 0 || config.interactive == 1) repl();
-
-    argvcopy = convertToSds(argc+1, argv);
-    if (config.argn_from_stdin) {
-        sds lastarg = readArgFromStdin();
-        argvcopy[argc] = lastarg;
-        argc++;
-    }
-    return cliSendCommand(argc, argvcopy, config.repeat);
+    /* Start interactive mode when no command is provided */
+    if (argc == 0) repl();
+    /* Otherwise, we have some arguments to execute */
+    return noninteractive(argc,convertToSds(argc,argv));
 }