mariadb/client/mysqlshow.c
monty@mysql.com/narttu.mysql.fi 088e2395f1 WL#3817: Simplify string / memory area types and make things more consistent (first part)
The following type conversions was done:

- Changed byte to uchar
- Changed gptr to uchar*
- Change my_string to char *
- Change my_size_t to size_t
- Change size_s to size_t

Removed declaration of byte, gptr, my_string, my_size_t and size_s. 

Following function parameter changes was done:
- All string functions in mysys/strings was changed to use size_t
  instead of uint for string lengths.
- All read()/write() functions changed to use size_t (including vio).
- All protocoll functions changed to use size_t instead of uint
- Functions that used a pointer to a string length was changed to use size_t*
- Changed malloc(), free() and related functions from using gptr to use void *
  as this requires fewer casts in the code and is more in line with how the
  standard functions work.
- Added extra length argument to dirname_part() to return the length of the
  created string.
- Changed (at least) following functions to take uchar* as argument:
  - db_dump()
  - my_net_write()
  - net_write_command()
  - net_store_data()
  - DBUG_DUMP()
  - decimal2bin() & bin2decimal()
- Changed my_compress() and my_uncompress() to use size_t. Changed one
  argument to my_uncompress() from a pointer to a value as we only return
  one value (makes function easier to use).
- Changed type of 'pack_data' argument to packfrm() to avoid casts.
- Changed in readfrm() and writefrom(), ha_discover and handler::discover()
  the type for argument 'frmdata' to uchar** to avoid casts.
- Changed most Field functions to use uchar* instead of char* (reduced a lot of
  casts).
- Changed field->val_xxx(xxx, new_ptr) to take const pointers.

Other changes:
- Removed a lot of not needed casts
- Added a few new cast required by other changes
- Added some cast to my_multi_malloc() arguments for safety (as string lengths
  needs to be uint, not size_t).
- Fixed all calls to hash-get-key functions to use size_t*. (Needed to be done
  explicitely as this conflict was often hided by casting the function to
  hash_get_key).
- Changed some buffers to memory regions to uchar* to avoid casts.
- Changed some string lengths from uint to size_t.
- Changed field->ptr to be uchar* instead of char*. This allowed us to
  get rid of a lot of casts.
- Some changes from true -> TRUE, false -> FALSE, unsigned char -> uchar
- Include zlib.h in some files as we needed declaration of crc32()
- Changed MY_FILE_ERROR to be (size_t) -1.
- Changed many variables to hold the result of my_read() / my_write() to be
  size_t. This was needed to properly detect errors (which are
  returned as (size_t) -1).
- Removed some very old VMS code
- Changed packfrm()/unpackfrm() to not be depending on uint size
  (portability fix)
- Removed windows specific code to restore cursor position as this
  causes slowdown on windows and we should not mix read() and pread()
  calls anyway as this is not thread safe. Updated function comment to
  reflect this. Changed function that depended on original behavior of
  my_pwrite() to itself restore the cursor position (one such case).
- Added some missing checking of return value of malloc().
- Changed definition of MOD_PAD_CHAR_TO_FULL_LENGTH to avoid 'long' overflow.
- Changed type of table_def::m_size from my_size_t to ulong to reflect that
  m_size is the number of elements in the array, not a string/memory
  length.
- Moved THD::max_row_length() to table.cc (as it's not depending on THD).
  Inlined max_row_length_blob() into this function.
- More function comments
- Fixed some compiler warnings when compiled without partitions.
- Removed setting of LEX_STRING() arguments in declaration (portability fix).
- Some trivial indentation/variable name changes.
- Some trivial code simplifications:
  - Replaced some calls to alloc_root + memcpy to use
    strmake_root()/strdup_root().
  - Changed some calls from memdup() to strmake() (Safety fix)
  - Simpler loops in client-simple.c
2007-05-10 12:59:39 +03:00

884 lines
24 KiB
C

/* Copyright (C) 2000-2006 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* Show databases, tables or columns */
#define SHOW_VERSION "9.6"
#include "client_priv.h"
#include <my_sys.h>
#include <m_string.h>
#include <mysql.h>
#include <mysqld_error.h>
#include <signal.h>
#include <stdarg.h>
#include <sslopt-vars.h>
static char * host=0, *opt_password=0, *user=0;
static my_bool opt_show_keys= 0, opt_compress= 0, opt_count=0, opt_status= 0;
static my_bool tty_password= 0, opt_table_type= 0, info_flag= 0;
static uint opt_verbose=0;
static char *default_charset= (char*) MYSQL_DEFAULT_CHARSET_NAME;
#ifdef HAVE_SMEM
static char *shared_memory_base_name=0;
#endif
static uint opt_protocol=0;
static void get_options(int *argc,char ***argv);
static uint opt_mysql_port=0;
static int list_dbs(MYSQL *mysql,const char *wild);
static int list_tables(MYSQL *mysql,const char *db,const char *table);
static int list_table_status(MYSQL *mysql,const char *db,const char *table);
static int list_fields(MYSQL *mysql,const char *db,const char *table,
const char *field);
static void print_header(const char *header,uint head_length,...);
static void print_row(const char *header,uint head_length,...);
static void print_trailer(uint length,...);
static void print_res_header(MYSQL_RES *result);
static void print_res_top(MYSQL_RES *result);
static void print_res_row(MYSQL_RES *result,MYSQL_ROW cur);
static const char *load_default_groups[]= { "mysqlshow","client",0 };
static char * opt_mysql_unix_port=0;
int main(int argc, char **argv)
{
int error;
my_bool first_argument_uses_wildcards=0;
char *wild;
MYSQL mysql;
MY_INIT(argv[0]);
load_defaults("my",load_default_groups,&argc,&argv);
get_options(&argc,&argv);
wild=0;
if (argc)
{
char *pos= argv[argc-1], *to;
for (to= pos ; *pos ; pos++, to++)
{
switch (*pos) {
case '*':
*pos= '%';
first_argument_uses_wildcards= 1;
break;
case '?':
*pos= '_';
first_argument_uses_wildcards= 1;
break;
case '%':
case '_':
first_argument_uses_wildcards= 1;
break;
case '\\':
pos++;
default: break;
}
*to= *pos;
}
*to= *pos; /* just to copy a '\0' if '\\' was used */
}
if (first_argument_uses_wildcards)
wild= argv[--argc];
else if (argc == 3) /* We only want one field */
wild= argv[--argc];
if (argc > 2)
{
fprintf(stderr,"%s: Too many arguments\n",my_progname);
exit(1);
}
mysql_init(&mysql);
if (opt_compress)
mysql_options(&mysql,MYSQL_OPT_COMPRESS,NullS);
#ifdef HAVE_OPENSSL
if (opt_use_ssl)
mysql_ssl_set(&mysql, opt_ssl_key, opt_ssl_cert, opt_ssl_ca,
opt_ssl_capath, opt_ssl_cipher);
mysql_options(&mysql,MYSQL_OPT_SSL_VERIFY_SERVER_CERT,
(char*)&opt_ssl_verify_server_cert);
#endif
if (opt_protocol)
mysql_options(&mysql,MYSQL_OPT_PROTOCOL,(char*)&opt_protocol);
#ifdef HAVE_SMEM
if (shared_memory_base_name)
mysql_options(&mysql,MYSQL_SHARED_MEMORY_BASE_NAME,shared_memory_base_name);
#endif
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, default_charset);
if (!(mysql_real_connect(&mysql,host,user,opt_password,
(first_argument_uses_wildcards) ? "" :
argv[0],opt_mysql_port,opt_mysql_unix_port,
0)))
{
fprintf(stderr,"%s: %s\n",my_progname,mysql_error(&mysql));
exit(1);
}
mysql.reconnect= 1;
switch (argc) {
case 0: error=list_dbs(&mysql,wild); break;
case 1:
if (opt_status)
error=list_table_status(&mysql,argv[0],wild);
else
error=list_tables(&mysql,argv[0],wild);
break;
default:
if (opt_status && ! wild)
error=list_table_status(&mysql,argv[0],argv[1]);
else
error=list_fields(&mysql,argv[0],argv[1],wild);
break;
}
mysql_close(&mysql); /* Close & free connection */
if (opt_password)
my_free(opt_password,MYF(0));
#ifdef HAVE_SMEM
my_free(shared_memory_base_name,MYF(MY_ALLOW_ZERO_PTR));
#endif
my_end(info_flag ? MY_CHECK_ERROR : 0);
exit(error ? 1 : 0);
return 0; /* No compiler warnings */
}
static struct my_option my_long_options[] =
{
#ifdef __NETWARE__
{"autoclose", OPT_AUTO_CLOSE, "Auto close the screen on exit for Netware.",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"character-sets-dir", 'c', "Directory where character sets are.",
(uchar**) &charsets_dir, (uchar**) &charsets_dir, 0, GET_STR, REQUIRED_ARG, 0,
0, 0, 0, 0, 0},
{"default-character-set", OPT_DEFAULT_CHARSET,
"Set the default character set.", (uchar**) &default_charset,
(uchar**) &default_charset, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{"count", OPT_COUNT,
"Show number of rows per table (may be slow for not MyISAM tables)",
(uchar**) &opt_count, (uchar**) &opt_count, 0, GET_BOOL, NO_ARG, 0, 0, 0,
0, 0, 0},
{"compress", 'C', "Use compression in server/client protocol.",
(uchar**) &opt_compress, (uchar**) &opt_compress, 0, GET_BOOL, NO_ARG, 0, 0, 0,
0, 0, 0},
{"debug", '#', "Output debug log. Often this is 'd:t:o,filename'.",
0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
{"debug-info", OPT_DEBUG_INFO, "Print some debug info at exit.", (uchar**) &info_flag,
(uchar**) &info_flag, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
{"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG,
0, 0, 0, 0, 0, 0},
{"host", 'h', "Connect to host.", (uchar**) &host, (uchar**) &host, 0, GET_STR,
REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{"status", 'i', "Shows a lot of extra information about each table.",
(uchar**) &opt_status, (uchar**) &opt_status, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
0, 0},
{"keys", 'k', "Show keys for table.", (uchar**) &opt_show_keys,
(uchar**) &opt_show_keys, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
{"password", 'p',
"Password to use when connecting to server. If password is not given it's asked from the tty.",
0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
{"port", 'P', "Port number to use for connection.", (uchar**) &opt_mysql_port,
(uchar**) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0,
0},
#ifdef __WIN__
{"pipe", 'W', "Use named pipes to connect to server.", 0, 0, 0, GET_NO_ARG,
NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"protocol", OPT_MYSQL_PROTOCOL, "The protocol of connection (tcp,socket,pipe,memory).",
0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_SMEM
{"shared-memory-base-name", OPT_SHARED_MEMORY_BASE_NAME,
"Base name of shared memory.", (uchar**) &shared_memory_base_name, (uchar**) &shared_memory_base_name,
0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"show-table-type", 't', "Show table type column.",
(uchar**) &opt_table_type, (uchar**) &opt_table_type, 0, GET_BOOL,
NO_ARG, 0, 0, 0, 0, 0, 0},
{"socket", 'S', "Socket file to use for connection.",
(uchar**) &opt_mysql_unix_port, (uchar**) &opt_mysql_unix_port, 0, GET_STR,
REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#include <sslopt-longopts.h>
#ifndef DONT_ALLOW_USER_CHANGE
{"user", 'u', "User for login if not current user.", (uchar**) &user,
(uchar**) &user, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"verbose", 'v',
"More verbose output; You can use this multiple times to get even more verbose output.",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{"version", 'V', "Output version information and exit.", 0, 0, 0, GET_NO_ARG,
NO_ARG, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};
#include <help_start.h>
static void print_version(void)
{
printf("%s Ver %s Distrib %s, for %s (%s)\n",my_progname,SHOW_VERSION,
MYSQL_SERVER_VERSION,SYSTEM_TYPE,MACHINE_TYPE);
NETWARE_SET_SCREEN_MODE(1);
}
static void usage(void)
{
print_version();
puts("Copyright (C) 2000-2006 MySQL AB");
puts("This software comes with ABSOLUTELY NO WARRANTY. This is free software,\nand you are welcome to modify and redistribute it under the GPL license\n");
puts("Shows the structure of a mysql database (databases,tables and columns)\n");
printf("Usage: %s [OPTIONS] [database [table [column]]]\n",my_progname);
puts("\n\
If last argument contains a shell or SQL wildcard (*,?,% or _) then only\n\
what\'s matched by the wildcard is shown.\n\
If no database is given then all matching databases are shown.\n\
If no table is given then all matching tables in database are shown\n\
If no column is given then all matching columns and columntypes in table\n\
are shown");
print_defaults("my",load_default_groups);
my_print_help(my_long_options);
my_print_variables(my_long_options);
}
#include <help_end.h>
static my_bool
get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
char *argument)
{
switch(optid) {
#ifdef __NETWARE__
case OPT_AUTO_CLOSE:
setscreenmode(SCR_AUTOCLOSE_ON_EXIT);
break;
#endif
case 'v':
opt_verbose++;
break;
case 'p':
if (argument)
{
char *start=argument;
my_free(opt_password,MYF(MY_ALLOW_ZERO_PTR));
opt_password=my_strdup(argument,MYF(MY_FAE));
while (*argument) *argument++= 'x'; /* Destroy argument */
if (*start)
start[1]=0; /* Cut length of argument */
tty_password= 0;
}
else
tty_password=1;
break;
case 'W':
#ifdef __WIN__
opt_protocol = MYSQL_PROTOCOL_PIPE;
#endif
break;
case OPT_MYSQL_PROTOCOL:
opt_protocol= find_type_or_exit(argument, &sql_protocol_typelib,
opt->name);
break;
case '#':
DBUG_PUSH(argument ? argument : "d:t:o");
break;
#include <sslopt-case.h>
case 'V':
print_version();
exit(0);
break;
case '?':
case 'I': /* Info */
usage();
exit(0);
}
return 0;
}
static void
get_options(int *argc,char ***argv)
{
int ho_error;
if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))
exit(ho_error);
if (tty_password)
opt_password=get_tty_password(NullS);
if (opt_count)
{
/*
We need to set verbose to 2 as we need to change the output to include
the number-of-rows column
*/
opt_verbose= 2;
}
return;
}
static int
list_dbs(MYSQL *mysql,const char *wild)
{
const char *header;
uint length, counter = 0;
ulong rowcount = 0L;
char tables[NAME_LEN+1], rows[NAME_LEN+1];
char query[255];
MYSQL_FIELD *field;
MYSQL_RES *result;
MYSQL_ROW row= NULL, rrow;
if (!(result=mysql_list_dbs(mysql,wild)))
{
fprintf(stderr,"%s: Cannot list databases: %s\n",my_progname,
mysql_error(mysql));
return 1;
}
/*
If a wildcard was used, but there was only one row and it's name is an
exact match, we'll assume they really wanted to see the contents of that
database. This is because it is fairly common for database names to
contain the underscore (_), like INFORMATION_SCHEMA.
*/
if (wild && mysql_num_rows(result) == 1)
{
row= mysql_fetch_row(result);
if (!my_strcasecmp(&my_charset_latin1, row[0], wild))
{
mysql_free_result(result);
if (opt_status)
return list_table_status(mysql, wild, NULL);
else
return list_tables(mysql, wild, NULL);
}
}
if (wild)
printf("Wildcard: %s\n",wild);
header="Databases";
length=(uint) strlen(header);
field=mysql_fetch_field(result);
if (length < field->max_length)
length=field->max_length;
if (!opt_verbose)
print_header(header,length,NullS);
else if (opt_verbose == 1)
print_header(header,length,"Tables",6,NullS);
else
print_header(header,length,"Tables",6,"Total Rows",12,NullS);
/* The first row may have already been read up above. */
while (row || (row= mysql_fetch_row(result)))
{
counter++;
if (opt_verbose)
{
if (!(mysql_select_db(mysql,row[0])))
{
MYSQL_RES *tresult = mysql_list_tables(mysql,(char*)NULL);
if (mysql_affected_rows(mysql) > 0)
{
sprintf(tables,"%6lu",(ulong) mysql_affected_rows(mysql));
rowcount = 0;
if (opt_verbose > 1)
{
/* Print the count of tables and rows for each database */
MYSQL_ROW trow;
while ((trow = mysql_fetch_row(tresult)))
{
sprintf(query,"SELECT COUNT(*) FROM `%s`",trow[0]);
if (!(mysql_query(mysql,query)))
{
MYSQL_RES *rresult;
if ((rresult = mysql_store_result(mysql)))
{
rrow = mysql_fetch_row(rresult);
rowcount += (ulong) strtoull(rrow[0], (char**) 0, 10);
mysql_free_result(rresult);
}
}
}
sprintf(rows,"%12lu",rowcount);
}
}
else
{
sprintf(tables,"%6d",0);
sprintf(rows,"%12d",0);
}
mysql_free_result(tresult);
}
else
{
strmov(tables,"N/A");
strmov(rows,"N/A");
}
}
if (!opt_verbose)
print_row(row[0],length,0);
else if (opt_verbose == 1)
print_row(row[0],length,tables,6,NullS);
else
print_row(row[0],length,tables,6,rows,12,NullS);
row= NULL;
}
print_trailer(length,
(opt_verbose > 0 ? 6 : 0),
(opt_verbose > 1 ? 12 :0),
0);
if (counter && opt_verbose)
printf("%u row%s in set.\n",counter,(counter > 1) ? "s" : "");
mysql_free_result(result);
return 0;
}
static int
list_tables(MYSQL *mysql,const char *db,const char *table)
{
const char *header;
uint head_length, counter = 0;
char query[255], rows[NAME_LEN], fields[16];
MYSQL_FIELD *field;
MYSQL_RES *result;
MYSQL_ROW row, rrow;
if (mysql_select_db(mysql,db))
{
fprintf(stderr,"%s: Cannot connect to db %s: %s\n",my_progname,db,
mysql_error(mysql));
return 1;
}
if (table)
{
/*
We just hijack the 'rows' variable for a bit to store the escaped
table name
*/
mysql_real_escape_string(mysql, rows, table, (unsigned long)strlen(table));
my_snprintf(query, sizeof(query), "show%s tables like '%s'",
opt_table_type ? " full" : "", rows);
}
else
my_snprintf(query, sizeof(query), "show%s tables",
opt_table_type ? " full" : "");
if (mysql_query(mysql, query) || !(result= mysql_store_result(mysql)))
{
fprintf(stderr,"%s: Cannot list tables in %s: %s\n",my_progname,db,
mysql_error(mysql));
exit(1);
}
printf("Database: %s",db);
if (table)
printf(" Wildcard: %s",table);
putchar('\n');
header="Tables";
head_length=(uint) strlen(header);
field=mysql_fetch_field(result);
if (head_length < field->max_length)
head_length=field->max_length;
if (opt_table_type)
{
if (!opt_verbose)
print_header(header,head_length,"table_type",10,NullS);
else if (opt_verbose == 1)
print_header(header,head_length,"table_type",10,"Columns",8,NullS);
else
{
print_header(header,head_length,"table_type",10,"Columns",8,
"Total Rows",10,NullS);
}
}
else
{
if (!opt_verbose)
print_header(header,head_length,NullS);
else if (opt_verbose == 1)
print_header(header,head_length,"Columns",8,NullS);
else
print_header(header,head_length,"Columns",8, "Total Rows",10,NullS);
}
while ((row = mysql_fetch_row(result)))
{
counter++;
if (opt_verbose > 0)
{
if (!(mysql_select_db(mysql,db)))
{
MYSQL_RES *rresult = mysql_list_fields(mysql,row[0],NULL);
ulong rowcount=0L;
if (!rresult)
{
strmov(fields,"N/A");
strmov(rows,"N/A");
}
else
{
sprintf(fields,"%8u",(uint) mysql_num_fields(rresult));
mysql_free_result(rresult);
if (opt_verbose > 1)
{
/* Print the count of rows for each table */
sprintf(query,"SELECT COUNT(*) FROM `%s`",row[0]);
if (!(mysql_query(mysql,query)))
{
if ((rresult = mysql_store_result(mysql)))
{
rrow = mysql_fetch_row(rresult);
rowcount += (unsigned long) strtoull(rrow[0], (char**) 0, 10);
mysql_free_result(rresult);
}
sprintf(rows,"%10lu",rowcount);
}
else
sprintf(rows,"%10d",0);
}
}
}
else
{
strmov(fields,"N/A");
strmov(rows,"N/A");
}
}
if (opt_table_type)
{
if (!opt_verbose)
print_row(row[0],head_length,row[1],10,NullS);
else if (opt_verbose == 1)
print_row(row[0],head_length,row[1],10,fields,8,NullS);
else
print_row(row[0],head_length,row[1],10,fields,8,rows,10,NullS);
}
else
{
if (!opt_verbose)
print_row(row[0],head_length,NullS);
else if (opt_verbose == 1)
print_row(row[0],head_length, fields,8, NullS);
else
print_row(row[0],head_length, fields,8, rows,10, NullS);
}
}
print_trailer(head_length,
(opt_table_type ? 10 : opt_verbose > 0 ? 8 : 0),
(opt_table_type ? (opt_verbose > 0 ? 8 : 0)
: (opt_verbose > 1 ? 10 :0)),
!opt_table_type ? 0 : opt_verbose > 1 ? 10 :0,
0);
if (counter && opt_verbose)
printf("%u row%s in set.\n\n",counter,(counter > 1) ? "s" : "");
mysql_free_result(result);
return 0;
}
static int
list_table_status(MYSQL *mysql,const char *db,const char *wild)
{
char query[1024],*end;
MYSQL_RES *result;
MYSQL_ROW row;
end=strxmov(query,"show table status from `",db,"`",NullS);
if (wild && wild[0])
strxmov(end," like '",wild,"'",NullS);
if (mysql_query(mysql,query) || !(result=mysql_store_result(mysql)))
{
fprintf(stderr,"%s: Cannot get status for db: %s, table: %s: %s\n",
my_progname,db,wild ? wild : "",mysql_error(mysql));
if (mysql_errno(mysql) == ER_PARSE_ERROR)
fprintf(stderr,"This error probably means that your MySQL server doesn't support the\n\'show table status' command.\n");
return 1;
}
printf("Database: %s",db);
if (wild)
printf(" Wildcard: %s",wild);
putchar('\n');
print_res_header(result);
while ((row=mysql_fetch_row(result)))
print_res_row(result,row);
print_res_top(result);
mysql_free_result(result);
return 0;
}
/*
list fields uses field interface as an example of how to parse
a MYSQL FIELD
*/
static int
list_fields(MYSQL *mysql,const char *db,const char *table,
const char *wild)
{
char query[1024],*end;
MYSQL_RES *result;
MYSQL_ROW row;
ulong rows;
LINT_INIT(rows);
if (mysql_select_db(mysql,db))
{
fprintf(stderr,"%s: Cannot connect to db: %s: %s\n",my_progname,db,
mysql_error(mysql));
return 1;
}
if (opt_count)
{
sprintf(query,"select count(*) from `%s`", table);
if (mysql_query(mysql,query) || !(result=mysql_store_result(mysql)))
{
fprintf(stderr,"%s: Cannot get record count for db: %s, table: %s: %s\n",
my_progname,db,table,mysql_error(mysql));
return 1;
}
row= mysql_fetch_row(result);
rows= (ulong) strtoull(row[0], (char**) 0, 10);
mysql_free_result(result);
}
end=strmov(strmov(strmov(query,"show /*!32332 FULL */ columns from `"),table),"`");
if (wild && wild[0])
strxmov(end," like '",wild,"'",NullS);
if (mysql_query(mysql,query) || !(result=mysql_store_result(mysql)))
{
fprintf(stderr,"%s: Cannot list columns in db: %s, table: %s: %s\n",
my_progname,db,table,mysql_error(mysql));
return 1;
}
printf("Database: %s Table: %s", db, table);
if (opt_count)
printf(" Rows: %lu", rows);
if (wild && wild[0])
printf(" Wildcard: %s",wild);
putchar('\n');
print_res_header(result);
while ((row=mysql_fetch_row(result)))
print_res_row(result,row);
print_res_top(result);
if (opt_show_keys)
{
end=strmov(strmov(strmov(query,"show keys from `"),table),"`");
if (mysql_query(mysql,query) || !(result=mysql_store_result(mysql)))
{
fprintf(stderr,"%s: Cannot list keys in db: %s, table: %s: %s\n",
my_progname,db,table,mysql_error(mysql));
return 1;
}
if (mysql_num_rows(result))
{
print_res_header(result);
while ((row=mysql_fetch_row(result)))
print_res_row(result,row);
print_res_top(result);
}
else
puts("Table has no keys");
}
mysql_free_result(result);
return 0;
}
/*****************************************************************************
General functions to print a nice ascii-table from data
*****************************************************************************/
static void
print_header(const char *header,uint head_length,...)
{
va_list args;
uint length,i,str_length,pre_space;
const char *field;
va_start(args,head_length);
putchar('+');
field=header; length=head_length;
for (;;)
{
for (i=0 ; i < length+2 ; i++)
putchar('-');
putchar('+');
if (!(field=va_arg(args,char *)))
break;
length=va_arg(args,uint);
}
va_end(args);
putchar('\n');
va_start(args,head_length);
field=header; length=head_length;
putchar('|');
for (;;)
{
str_length=(uint) strlen(field);
if (str_length > length)
str_length=length+1;
pre_space=(uint) (((int) length-(int) str_length)/2)+1;
for (i=0 ; i < pre_space ; i++)
putchar(' ');
for (i = 0 ; i < str_length ; i++)
putchar(field[i]);
length=length+2-str_length-pre_space;
for (i=0 ; i < length ; i++)
putchar(' ');
putchar('|');
if (!(field=va_arg(args,char *)))
break;
length=va_arg(args,uint);
}
va_end(args);
putchar('\n');
va_start(args,head_length);
putchar('+');
field=header; length=head_length;
for (;;)
{
for (i=0 ; i < length+2 ; i++)
putchar('-');
putchar('+');
if (!(field=va_arg(args,char *)))
break;
length=va_arg(args,uint);
}
va_end(args);
putchar('\n');
}
static void
print_row(const char *header,uint head_length,...)
{
va_list args;
const char *field;
uint i,length,field_length;
va_start(args,head_length);
field=header; length=head_length;
for (;;)
{
putchar('|');
putchar(' ');
fputs(field,stdout);
field_length=(uint) strlen(field);
for (i=field_length ; i <= length ; i++)
putchar(' ');
if (!(field=va_arg(args,char *)))
break;
length=va_arg(args,uint);
}
va_end(args);
putchar('|');
putchar('\n');
}
static void
print_trailer(uint head_length,...)
{
va_list args;
uint length,i;
va_start(args,head_length);
length=head_length;
putchar('+');
for (;;)
{
for (i=0 ; i < length+2 ; i++)
putchar('-');
putchar('+');
if (!(length=va_arg(args,uint)))
break;
}
va_end(args);
putchar('\n');
}
static void print_res_header(MYSQL_RES *result)
{
MYSQL_FIELD *field;
print_res_top(result);
mysql_field_seek(result,0);
putchar('|');
while ((field = mysql_fetch_field(result)))
{
printf(" %-*s|",(int) field->max_length+1,field->name);
}
putchar('\n');
print_res_top(result);
}
static void print_res_top(MYSQL_RES *result)
{
uint i,length;
MYSQL_FIELD *field;
putchar('+');
mysql_field_seek(result,0);
while((field = mysql_fetch_field(result)))
{
if ((length=(uint) strlen(field->name)) > field->max_length)
field->max_length=length;
else
length=field->max_length;
for (i=length+2 ; i--> 0 ; )
putchar('-');
putchar('+');
}
putchar('\n');
}
static void print_res_row(MYSQL_RES *result,MYSQL_ROW cur)
{
uint i,length;
MYSQL_FIELD *field;
putchar('|');
mysql_field_seek(result,0);
for (i=0 ; i < mysql_num_fields(result); i++)
{
field = mysql_fetch_field(result);
length=field->max_length;
printf(" %-*s|",length+1,cur[i] ? (char*) cur[i] : "");
}
putchar('\n');
}