pg_dump.c 52.8 KB
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/*-------------------------------------------------------------------------
 *
 * pg_dump.c--
 *    pg_dump is an utility for dumping out a postgres database
 * into a script file.
 *
 *  pg_dump will read the system catalogs in a database and 
 *  dump out a script that reproduces
 *  the schema of the database in terms of
 *        user-defined types
 *        user-defined functions
 *        tables
 *        indices
 *        aggregates
 *        operators
 *
 * the output script is SQL that is understood by Postgres95
 *
 * Copyright (c) 1994, Regents of the University of California
 *
 *
 * IDENTIFICATION
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 *    $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.25 1997/03/01 15:24:51 momjian Exp $
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 *
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 * Modifications - 6/10/96 - dave@bensoft.com - version 1.13.dhb
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 *
 *   Applied 'insert string' patch from "Marc G. Fournier" <scrappy@ki.net>
 *   Added '-t table' option
 *   Added '-a' option
 *   Added '-da' option
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 *
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 * Modifications - 6/12/96 - dave@bensoft.com - version 1.13.dhb.2
 *
 *   - Fixed dumpTable output to output lengths for char and varchar types!
 *   - Added single. quote to twin single quote expansion for 'insert' string
 *     mode.
 *
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 * Modifications - 7/26/96 - asussman@vidya.com
 *
 *   - Fixed ouput lengths for char and varchar type where the length is variable (-1)
 *
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 *-------------------------------------------------------------------------
 */

#include <stdlib.h>
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#include <unistd.h>     /* for getopt() */
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#include <stdio.h>
#include <string.h>
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#include <sys/param.h>  /* for MAXHOSTNAMELEN on most */
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#ifdef sparc_solaris
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#include <netdb.h>      /* for MAXHOSTNAMELEN on some */
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#endif

#include "postgres.h"
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#include "access/htup.h"
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#include "catalog/pg_type.h"
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#include "libpq-fe.h"
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#ifndef HAVE_STRDUP
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#include "strdup.h"
#endif
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#include "pg_dump.h"

extern char *optarg;
extern int optind, opterr;

/* global decls */
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bool g_verbose;  /* User wants verbose narration of our activities. */
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int g_last_builtin_oid; /* value of the last builtin oid */
FILE *g_fout;     /* the script file */
PGconn *g_conn;   /* the database connection */
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int dumpData; /* dump data using proper insert strings */
int attrNames; /* put attr names into insert strings */
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char g_opaque_type[10]; /* name for the opaque type */

/* placeholders for the delimiters for comments */
char g_comment_start[10]; 
char g_comment_end[10]; 


static void
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usage(const char* progname)
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{
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    fprintf(stderr, 
            "%s - version 1.13.dhb.2\n\n",progname);
    fprintf(stderr, 
            "usage:  %s [options] [dbname]\n",progname);
    fprintf(stderr, 
            "\t -f filename \t\t script output filename\n");
    fprintf(stderr, 
            "\t -H hostname \t\t server host name\n");
    fprintf(stderr, 
            "\t -p port     \t\t server port number\n");
    fprintf(stderr, 
            "\t -v          \t\t verbose\n");
    fprintf(stderr, 
            "\t -d          \t\t dump data as proper insert strings\n");
    fprintf(stderr, 
            "\t -D          \t\t dump data as inserts with attribute names\n");
    fprintf(stderr, 
            "\t -S          \t\t dump out only the schema, no data\n");
    fprintf(stderr, 
            "\t -a          \t\t dump out only the data, no schema\n");
    fprintf(stderr, 
            "\t -t table    \t\t dump for this table only\n");
    fprintf(stderr, 
            "\t -o          \t\t dump object id's (oids)\n");
    fprintf(stderr, 
            "\nIf dbname is not supplied, then the DATABASE environment "
            "variable value is used.\n");
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    fprintf(stderr, "\n");

    exit(1);
}

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static void 
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exit_nicely(PGconn* conn)
{
  PQfinish(conn);
  exit(1);
}


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/*
 * isViewRule
 *		Determine if the relation is a VIEW 
 *
 */
bool
isViewRule(char *relname)
{
    PGresult *res;
    int ntups;
    char query[MAXQUERYLEN];
    
    res = PQexec(g_conn, "begin");
    if (!res || 
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
    }
    PQclear(res);

    sprintf(query, "select relname from pg_class, pg_rewrite "
		   "where pg_class.oid = ev_class "
		   "and rulename = '_RET%s'", relname);

    res = PQexec(g_conn, query);
    if (!res || 
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"isViewRule(): SELECT failed\n");
        exit_nicely(g_conn);
    }
    
    ntups = PQntuples(res);

    PQclear(res);
    res = PQexec(g_conn, "end");
    PQclear(res);
    return ntups > 0 ? TRUE : FALSE;
}
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#define COPYBUFSIZ      8192


static void 
dumpClasses_nodumpData(FILE *fout, const char *classname, const bool oids) {

    PGresult *res;
    char query[255];
    int ret;
    bool copydone;
    char copybuf[COPYBUFSIZ];

    if (oids) {
        fprintf(fout, "COPY %s WITH OIDS FROM stdin;\n", 
                classname);
        sprintf(query, "COPY %s WITH OIDS TO stdout;\n", 
                classname);
    } else {
        fprintf(fout, "COPY %s FROM stdin;\n", classname);
        sprintf(query, "COPY %s TO stdout;\n", classname);
    }
    res = PQexec(g_conn, query);
    if (!res) {
        fprintf(stderr, "SQL query to dump the contents of Table %s "
                "did not execute.  Explanation from backend: '%s'.\n"
                "The query was: '%s'.\n",
                classname, PQerrorMessage(g_conn), query);
        exit_nicely(g_conn);
    } else {
        if (PQresultStatus(res) != PGRES_COPY_OUT) {
            fprintf(stderr,"SQL query to dump the contents of Table %s "
                    "executed abnormally.\n"
                    "PQexec() returned status %d when %d was expected.\n"
                    "The query was: '%s'.\n",
                    classname, PQresultStatus(res), PGRES_COPY_OUT, query);
            exit_nicely(g_conn);
        } else {
            copydone = false;
            while (!copydone) {
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                ret = PQgetline(res->conn, copybuf, COPYBUFSIZ); 
               
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                if (copybuf[0] == '\\' &&
                    copybuf[1] == '.' &&
                    copybuf[2] == '\0') {
                    copydone = true;        /* don't print this... */
                } else {
                    fputs(copybuf, fout);
                    switch (ret) {
                      case EOF:
                        copydone = true;
                        /*FALLTHROUGH*/
                      case 0:
                        fputc('\n', fout);
                        break;
                      case 1:
                        break;
                    }
                }
            }
            fprintf(fout, "\\.\n");
        }
        PQclear(res);
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        ret = PQendcopy(res->conn);
        if (ret != 0) {
            fprintf(stderr, "SQL query to dump the contents of Table %s "
                    "did not execute correctly.  After we read all the "
                    "table contents from the backend, PQendcopy() failed.  "
                    "Explanation from backend: '%s'.\n"
                    "The query was: '%s'.\n",
                    classname, PQerrorMessage(g_conn), query);
            exit_nicely(g_conn);
        }
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    }
}



static void
dumpClasses_dumpData(FILE *fout, const char *classname, 
                     const TableInfo tblinfo, bool oids) {        

    PGresult *res;
    char query[255];
    int actual_atts; /* number of attrs in this a table */
    char expandbuf[COPYBUFSIZ];
    char q[MAXQUERYLEN];
    int tuple;
    int field;

    sprintf(query, "select * from %s;\n", classname);
    res = PQexec(g_conn, query);
    if (!res ||
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"dumpClasses(): command failed\n");
        exit_nicely(g_conn);
    }
    tuple=0;
    while(tuple < PQntuples(res)) {
        fprintf(fout, "insert into %s ", classname);
        if (attrNames) {
            int j;
            actual_atts = 0;
            sprintf(q, "(");
            for (j=0;j<tblinfo.numatts;j++) {
                if (tblinfo.inhAttrs[j] == 0) {
                    sprintf(q, "%s%s%s",
                            q,
                            (actual_atts > 0) ? "," : "",
                            tblinfo.attnames[j]);
                    actual_atts++;
                }
            }
            sprintf(q,"%s%s",q, ") ");
            fprintf(fout, q);
        }
        fprintf(fout, "values (");
        field=0;
        do {
            if (PQgetisnull(res,tuple,field)) {
                fprintf(fout,"NULL");
            } else {
                switch(PQftype(res,field)) {
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                  case INT2OID: case INT4OID: case OIDOID: /* int types */
                  case FLOAT4OID: case FLOAT8OID: /* float types */
                    fprintf(fout, "%s",
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                            PQgetvalue(res,tuple,field));
                    break;
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                  default: {
                      char *expsrc,*expdest;
  
                    /* Before outputting string value, expand all
                       single quotes to twin single quotes -
                       dhb - 6/11/96 */
                    expsrc=PQgetvalue(res,tuple,field);
                      expdest=expandbuf;
                      while (*expsrc) {
                          *expdest++=*expsrc;
                          if (*expsrc == (char)0x27)  /*single quote*/
                            *expdest++ = *expsrc;
                          expsrc++;
                      }
                      *expdest=*expsrc; /* null term. */
                      
                      fprintf(fout, "'%s'", expandbuf);
                  }
                    break;
                }
            }
            field++;
            if(field != PQnfields(res))
              fprintf(fout, ",");
        } while(field < PQnfields(res));
        fprintf(fout, ");\n");
        tuple++;
    }
    PQclear(res);
}



/*
 * DumpClasses -
 *    dump the contents of all the classes.
 */
static void
dumpClasses(const TableInfo tblinfo[], const int numTables, FILE *fout, 
            const char *onlytable, const bool oids) {

    int i;
    char *all_only;

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    if (onlytable == NULL) all_only = "all";
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    else all_only = "one";
    
    if (g_verbose)
      fprintf(stderr, "%s dumping out the contents of %s of %d tables %s\n",
              g_comment_start, all_only, numTables, g_comment_end);
    
    for(i = 0; i < numTables; i++) {
        const char *classname = tblinfo[i].relname;
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	/* Skip VIEW relations */
	if (isViewRule(tblinfo[i].relname))
		continue;

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        if (!onlytable || (!strcmp(classname,onlytable))) {
            if (g_verbose)
              fprintf(stderr, "%s dumping out the contents of Table %s %s\n",
                      g_comment_start, classname, g_comment_end);

            /* skip archive names*/
            if (isArchiveName(classname))
              continue;

            if(!dumpData) 
              dumpClasses_nodumpData(fout, classname, oids);
            else 
              dumpClasses_dumpData(fout, classname, tblinfo[i], oids);
        }
    }        
}



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int
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main(int argc, char** argv)
{
    int c;
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    const char* progname;
    const char* filename;
    const char* dbname;
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    int schemaOnly;
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    int dataOnly;
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    const char *pghost = NULL;
    const char *pgport = NULL;
    const char *tablename;
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    int oids;
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    TableInfo *tblinfo;
    int numTables;

    dbname = NULL;
    filename = NULL;
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    tablename = NULL;
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    g_verbose = false;
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    oids = 0;
    
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    strcpy(g_comment_start,"-- ");
    g_comment_end[0] = '\0';
    strcpy(g_opaque_type, "opaque");

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    dataOnly = schemaOnly = dumpData = attrNames = 0;
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    progname = *argv;

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    while ((c = getopt(argc, argv,"f:H:p:t:vSDdDao")) != EOF) {
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        switch(c) {
        case 'f': /* output file name */
            filename = optarg;
            break;
        case 'H' : /* server host */
            pghost = optarg;
            break;
        case 'p' : /* server port */
            pgport = optarg;
            break;
        case 'v': /* verbose */
            g_verbose = true;
            break;
        case 'S': /* dump schema only */
            schemaOnly = 1;
            break;
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        case 'd': /* dump data as proper insert strings */
            dumpData = 1;
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            break;
        case 'D': /* dump data as proper insert strings with attr names */
            dumpData = 1;
            attrNames = 1;
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            break;
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        case 't': /* Dump data for this table only */
            tablename = optarg;
            break;
        case 'a': /* Dump data only */
            dataOnly = 1;
            break;
        case 'o': /* Dump oids */
            oids = 1;
            break;
        default:
            usage(progname);
            break;
        }
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    }

    /* open the output file */
    if (filename == NULL) {
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        g_fout = stdout;
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    } else {
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        g_fout = fopen(filename, "w");
        if (g_fout == NULL) {
            fprintf(stderr,
                    "%s: could not open output file named %s for writing\n",
                    progname, filename);
            exit(2);
        }
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    }

    /* find database */
    if (!(dbname = argv[optind]) &&
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        !(dbname = getenv("DATABASE")) ) {
            fprintf(stderr, "%s: no database name specified\n",progname);
            exit (2);
        }
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    g_conn = PQsetdb(pghost, pgport, NULL, NULL, dbname);
    /* check to see that the backend connection was successfully made */
    if (PQstatus(g_conn) == CONNECTION_BAD) {
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        fprintf(stderr,"Connection to database '%s' failed.\n", dbname);
        fprintf(stderr,"%s\n",PQerrorMessage(g_conn));
        exit_nicely(g_conn);
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    }

    g_last_builtin_oid = findLastBuiltinOid();

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    if (oids)
        setMaxOid(g_fout);
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    if (!dataOnly) {
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        if (g_verbose) 
            fprintf(stderr, "%s last builtin oid is %d %s\n",
                    g_comment_start,  g_last_builtin_oid, g_comment_end);
        tblinfo = dumpSchema(g_fout, &numTables, tablename);
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    }
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    else
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      tblinfo = dumpSchema(NULL, &numTables, tablename);
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    if (!schemaOnly) {
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      dumpClasses(tblinfo, numTables, g_fout, tablename, oids);
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    }     

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    if (!dataOnly) /* dump indexes at the end for performance */
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        dumpSchemaIdx(g_fout, &numTables, tablename, tblinfo, numTables);
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    fflush(g_fout);
    fclose(g_fout);

    PQfinish(g_conn);
    exit(0);
}


/*
 * getTypes: 
 *    read all base types in the system catalogs and return them in the 
 * TypeInfo* structure
 *
 *  numTypes is set to the number of types read in 
 *
 */
TypeInfo*
getTypes(int *numTypes)
{
    PGresult *res;
    int ntups;
    int i;
    char query[MAXQUERYLEN];
    TypeInfo *tinfo;

    int i_oid;
    int i_typowner;
    int i_typname;
    int i_typlen;
    int i_typprtlen;
    int i_typinput;
    int i_typoutput;
    int i_typreceive;
    int i_typsend;
    int i_typelem;
    int i_typdelim;
    int i_typdefault;
    int i_typrelid;
    int i_typbyval;

    res = PQexec(g_conn, "begin");
    if (!res || 
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        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
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    }
    PQclear(res);
    
   /* find all base types */
   /* we include even the built-in types 
      because those may be used as array elements by user-defined types */
   /* we filter out the built-in types when 
      we dump out the types */

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    sprintf(query, "SELECT oid, typowner,typname, typlen, typprtlen, "
            "typinput, typoutput, typreceive, typsend, typelem, typdelim, "
            "typdefault, typrelid,typbyval from pg_type");
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    res = PQexec(g_conn,query);
    if (!res || 
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        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getTypes(): SELECT failed\n");
        exit_nicely(g_conn);
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    }
    
    ntups = PQntuples(res);
    
    tinfo = (TypeInfo*)malloc(ntups * sizeof(TypeInfo));

    i_oid = PQfnumber(res,"oid");
    i_typowner = PQfnumber(res,"typowner");
    i_typname = PQfnumber(res,"typname");
    i_typlen = PQfnumber(res,"typlen");
    i_typprtlen = PQfnumber(res,"typprtlen");
    i_typinput = PQfnumber(res,"typinput");
    i_typoutput = PQfnumber(res,"typoutput");
    i_typreceive = PQfnumber(res,"typreceive");
    i_typsend = PQfnumber(res,"typsend");
    i_typelem = PQfnumber(res,"typelem");
    i_typdelim = PQfnumber(res,"typdelim");
    i_typdefault = PQfnumber(res,"typdefault");
    i_typrelid = PQfnumber(res,"typrelid");
    i_typbyval = PQfnumber(res,"typbyval");

    for (i=0;i<ntups;i++) {
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        tinfo[i].oid = strdup(PQgetvalue(res,i,i_oid));
        tinfo[i].typowner = strdup(PQgetvalue(res,i,i_typowner));
        tinfo[i].typname = strdup(PQgetvalue(res,i,i_typname));
        tinfo[i].typlen = strdup(PQgetvalue(res,i,i_typlen));
        tinfo[i].typprtlen = strdup(PQgetvalue(res,i,i_typprtlen));
        tinfo[i].typinput = strdup(PQgetvalue(res,i,i_typinput));
        tinfo[i].typoutput = strdup(PQgetvalue(res,i,i_typoutput));
        tinfo[i].typreceive = strdup(PQgetvalue(res,i,i_typreceive));
        tinfo[i].typsend = strdup(PQgetvalue(res,i,i_typsend));
        tinfo[i].typelem = strdup(PQgetvalue(res,i,i_typelem));
        tinfo[i].typdelim = strdup(PQgetvalue(res,i,i_typdelim));
        tinfo[i].typdefault = strdup(PQgetvalue(res,i,i_typdefault));
        tinfo[i].typrelid = strdup(PQgetvalue(res,i,i_typrelid));

        if (strcmp(PQgetvalue(res,i,i_typbyval), "f") == 0)
            tinfo[i].passedbyvalue = 0;
        else
            tinfo[i].passedbyvalue = 1;

        /* check for user-defined array types,
           omit system generated ones */
        if ( (strcmp(tinfo[i].typelem, "0") != 0)  &&
             tinfo[i].typname[0] != '_')
            tinfo[i].isArray = 1;
        else
            tinfo[i].isArray = 0;
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    }

    *numTypes = ntups;

    PQclear(res);

    res = PQexec(g_conn,"end");
    PQclear(res);

    return tinfo;
}

/*
 * getOperators:
 *    read all operators in the system catalogs and return them in the 
 * OprInfo* structure
 *
 *  numOprs is set to the number of operators read in 
 *    
 *
 */
OprInfo*
getOperators(int *numOprs)
{
    PGresult *res;
    int ntups;
    int i;
    char query[MAXQUERYLEN];

    OprInfo* oprinfo;

    int i_oid;
    int i_oprname;
    int i_oprkind;
    int i_oprcode;
    int i_oprleft;
    int i_oprright;
    int i_oprcom;
    int i_oprnegate;
    int i_oprrest;
    int i_oprjoin;
    int i_oprcanhash;
    int i_oprlsortop;
    int i_oprrsortop;
    
    /* find all operators, including builtin operators,
       filter out system-defined operators at dump-out time */
    res = PQexec(g_conn, "begin");
    if (!res || 
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        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
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    }
    PQclear(res);

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    sprintf(query, "SELECT oid, oprname, oprkind, oprcode, oprleft, "
            "oprright, oprcom, oprnegate, oprrest, oprjoin, oprcanhash, "
            "oprlsortop, oprrsortop from pg_operator");
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    res = PQexec(g_conn, query);
    if (!res || 
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        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getOperators(): SELECT failed\n");
        exit_nicely(g_conn);
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    }
    
    ntups = PQntuples(res);
    *numOprs = ntups;

    oprinfo = (OprInfo*)malloc(ntups * sizeof(OprInfo));

    i_oid = PQfnumber(res,"oid");
    i_oprname = PQfnumber(res,"oprname");
    i_oprkind = PQfnumber(res,"oprkind");
    i_oprcode = PQfnumber(res,"oprcode");
    i_oprleft = PQfnumber(res,"oprleft");
    i_oprright = PQfnumber(res,"oprright");
    i_oprcom = PQfnumber(res,"oprcom");
    i_oprnegate = PQfnumber(res,"oprnegate");
    i_oprrest = PQfnumber(res,"oprrest");
    i_oprjoin = PQfnumber(res,"oprjoin");
    i_oprcanhash = PQfnumber(res,"oprcanhash");
    i_oprlsortop = PQfnumber(res,"oprlsortop");
    i_oprrsortop = PQfnumber(res,"oprrsortop");

    for (i=0;i<ntups;i++) {
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        oprinfo[i].oid = strdup(PQgetvalue(res,i,i_oid));
        oprinfo[i].oprname = strdup(PQgetvalue(res,i,i_oprname));
        oprinfo[i].oprkind = strdup(PQgetvalue(res,i,i_oprkind));
        oprinfo[i].oprcode = strdup(PQgetvalue(res,i,i_oprcode));
        oprinfo[i].oprleft = strdup(PQgetvalue(res,i,i_oprleft));
        oprinfo[i].oprright = strdup(PQgetvalue(res,i,i_oprright));
        oprinfo[i].oprcom = strdup(PQgetvalue(res,i,i_oprcom));
        oprinfo[i].oprnegate = strdup(PQgetvalue(res,i,i_oprnegate));
        oprinfo[i].oprrest = strdup(PQgetvalue(res,i,i_oprrest));
        oprinfo[i].oprjoin = strdup(PQgetvalue(res,i,i_oprjoin));
        oprinfo[i].oprcanhash = strdup(PQgetvalue(res,i,i_oprcanhash));
        oprinfo[i].oprlsortop = strdup(PQgetvalue(res,i,i_oprlsortop));
        oprinfo[i].oprrsortop = strdup(PQgetvalue(res,i,i_oprrsortop));
695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737
    }

    PQclear(res);
    res = PQexec(g_conn, "end");
    PQclear(res);

    return oprinfo;
}


/*
 * getAggregates:
 *    read all the user-defined aggregates in the system catalogs and
 * return them in the AggInfo* structure
 *
 * numAggs is set to the number of aggregates read in 
 *    
 *
 */
AggInfo*
getAggregates(int *numAggs)
{
    PGresult* res;
    int ntups;
    int i;
    char query[MAXQUERYLEN];
    AggInfo *agginfo;

    int i_oid;
    int i_aggname;
    int i_aggtransfn1;
    int i_aggtransfn2;
    int i_aggfinalfn;
    int i_aggtranstype1;
    int i_aggbasetype;
    int i_aggtranstype2;
    int i_agginitval1;
    int i_agginitval2;

    /* find all user-defined aggregates */

    res = PQexec(g_conn, "begin");
    if (!res || 
738 739 740
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
741 742 743 744
    }
    PQclear(res);

    sprintf(query, 
745 746 747
            "SELECT oid, aggname, aggtransfn1, aggtransfn2, aggfinalfn, "
            "aggtranstype1, aggbasetype, aggtranstype2, agginitval1, "
            "agginitval2 from pg_aggregate;");
748 749 750

    res = PQexec(g_conn, query);
    if (!res || 
751 752 753
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getAggregates(): SELECT failed\n");
        exit_nicely(g_conn);
754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772
    }

    ntups = PQntuples(res);
    *numAggs = ntups;

    agginfo = (AggInfo*)malloc(ntups * sizeof(AggInfo));
    
    i_oid = PQfnumber(res,"oid");
    i_aggname = PQfnumber(res,"aggname");
    i_aggtransfn1 = PQfnumber(res,"aggtransfn1");
    i_aggtransfn2 = PQfnumber(res,"aggtransfn2");
    i_aggfinalfn = PQfnumber(res,"aggfinalfn");
    i_aggtranstype1 = PQfnumber(res,"aggtranstype1");
    i_aggbasetype = PQfnumber(res,"aggbasetype");
    i_aggtranstype2 = PQfnumber(res,"aggtranstype2");
    i_agginitval1 = PQfnumber(res,"agginitval1");
    i_agginitval2 = PQfnumber(res,"agginitval2");

    for (i=0;i<ntups;i++) {
773 774 775 776 777 778 779 780 781 782
        agginfo[i].oid = strdup(PQgetvalue(res,i,i_oid));
        agginfo[i].aggname = strdup(PQgetvalue(res,i,i_aggname));
        agginfo[i].aggtransfn1 = strdup(PQgetvalue(res,i,i_aggtransfn1));
        agginfo[i].aggtransfn2 = strdup(PQgetvalue(res,i,i_aggtransfn2));
        agginfo[i].aggfinalfn = strdup(PQgetvalue(res,i,i_aggfinalfn));
        agginfo[i].aggtranstype1 = strdup(PQgetvalue(res,i,i_aggtranstype1));
        agginfo[i].aggbasetype = strdup(PQgetvalue(res,i,i_aggbasetype));
        agginfo[i].aggtranstype2 = strdup(PQgetvalue(res,i,i_aggtranstype2));
        agginfo[i].agginitval1 = strdup(PQgetvalue(res,i,i_agginitval1));
        agginfo[i].agginitval2 = strdup(PQgetvalue(res,i,i_agginitval2));
783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824
    }

    PQclear(res);

    res = PQexec(g_conn, "end");
    PQclear(res);
    return agginfo;
}

/*
 * getFuncs:
 *    read all the user-defined functions in the system catalogs and
 * return them in the FuncInfo* structure
 *
 * numFuncs is set to the number of functions read in 
 *    
 *
 */
FuncInfo*
getFuncs(int *numFuncs)
{
    PGresult *res;
    int ntups;
    int i;
    char query[MAXQUERYLEN];
    FuncInfo *finfo;

    int i_oid;
    int i_proname;
    int i_proowner;
    int i_prolang;
    int i_pronargs;
    int i_proargtypes;
    int i_prorettype;
    int i_proretset;
    int i_prosrc;
    int i_probin;

   /* find all user-defined funcs */

    res = PQexec(g_conn, "begin");
    if (!res || 
825 826 827
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
828 829 830 831
    }
    PQclear(res);

    sprintf(query, 
832 833 834 835
            "SELECT oid, proname, proowner, prolang, pronargs, prorettype, "
            "proretset, proargtypes, prosrc, probin from pg_proc "
            "where oid > '%d'::oid", 
            g_last_builtin_oid);
836 837 838

    res = PQexec(g_conn, query);
    if (!res || 
839 840 841
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getFuncs(): SELECT failed\n");
        exit_nicely(g_conn);
842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861
    }
    
    ntups = PQntuples(res);
    
    *numFuncs = ntups;

    finfo = (FuncInfo*)malloc(ntups * sizeof(FuncInfo));

    i_oid = PQfnumber(res,"oid");
    i_proname = PQfnumber(res,"proname");
    i_proowner = PQfnumber(res,"proowner");
    i_prolang = PQfnumber(res,"prolang");
    i_pronargs = PQfnumber(res,"pronargs");
    i_proargtypes = PQfnumber(res,"proargtypes");
    i_prorettype = PQfnumber(res,"prorettype");
    i_proretset = PQfnumber(res,"proretset");
    i_prosrc = PQfnumber(res,"prosrc");
    i_probin = PQfnumber(res,"probin");
    
    for (i=0;i<ntups;i++) {
862 863 864
        finfo[i].oid = strdup(PQgetvalue(res,i,i_oid));
        finfo[i].proname = strdup(PQgetvalue(res,i,i_proname));
        finfo[i].proowner = strdup(PQgetvalue(res,i,i_proowner));
865

866 867
        finfo[i].prosrc = checkForQuote(PQgetvalue(res,i,i_prosrc));
        finfo[i].probin = strdup(PQgetvalue(res,i,i_probin));
868

869 870 871 872
        finfo[i].prorettype = strdup(PQgetvalue(res,i,i_prorettype));
        finfo[i].retset = (strcmp(PQgetvalue(res,i,i_proretset),"t") == 0);
        finfo[i].nargs = atoi(PQgetvalue(res,i,i_pronargs));
        finfo[i].lang = (atoi(PQgetvalue(res,i,i_prolang)) == C_PROLANG_OID);
873

874
        parseArgTypes(finfo[i].argtypes, PQgetvalue(res,i,i_proargtypes));
875

876
        finfo[i].dumped = 0;
877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916
    }

    PQclear(res);
    res = PQexec(g_conn, "end");
    PQclear(res);

    return finfo;

}

/*
 * getTables
 *    read all the user-defined tables (no indices, no catalogs)
 * in the system catalogs return them in the TableInfo* structure
 *
 * numTables is set to the number of tables read in 
 *    
 *
 */
TableInfo*
getTables(int *numTables)
{
    PGresult *res;
    int ntups;
    int i;
    char query[MAXQUERYLEN];
    TableInfo *tblinfo;
    
    int i_oid;
    int i_relname;
    int i_relarch;

    /* find all the user-defined tables (no indices and no catalogs),
     ordering by oid is important so that we always process the parent
     tables before the child tables when traversing the tblinfo* 

      we ignore tables that start with Xinv */

    res = PQexec(g_conn, "begin");
    if (!res || 
917 918 919
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
920 921 922 923
    }
    PQclear(res);

    sprintf(query, 
924 925 926
            "SELECT oid, relname, relarch from pg_class "
            "where relkind = 'r' and relname !~ '^pg_' "
            "and relname !~ '^Xinv' order by oid;");
927 928 929

    res = PQexec(g_conn, query);
    if (!res || 
930 931 932
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getTables(): SELECT failed\n");
        exit_nicely(g_conn);
933 934 935 936 937 938 939 940 941 942 943 944 945
    }

    ntups = PQntuples(res);

    *numTables = ntups;

    tblinfo = (TableInfo*)malloc(ntups * sizeof(TableInfo));

    i_oid = PQfnumber(res,"oid");
    i_relname = PQfnumber(res,"relname");
    i_relarch = PQfnumber(res,"relarch");

    for (i=0;i<ntups;i++) {
946 947 948
        tblinfo[i].oid = strdup(PQgetvalue(res,i,i_oid));
        tblinfo[i].relname = strdup(PQgetvalue(res,i,i_relname));
        tblinfo[i].relarch = strdup(PQgetvalue(res,i,i_relarch));
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982
    }

    PQclear(res);
    res = PQexec(g_conn, "end");
    PQclear(res);

    return tblinfo;

}

/*
 * getInherits
 *    read all the inheritance information
 * from the system catalogs return them in the InhInfo* structure
 *
 * numInherits is set to the number of tables read in 
 *    
 *
 */
InhInfo*
getInherits(int *numInherits)
{
    PGresult *res;
    int ntups;
    int i;
    char query[MAXQUERYLEN];
    InhInfo *inhinfo;
    
    int i_inhrel;
    int i_inhparent;

    /* find all the inheritance information */
    res = PQexec(g_conn, "begin");
    if (!res || 
983 984 985
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
986 987 988 989 990 991 992
    }
    PQclear(res);

    sprintf(query, "SELECT inhrel, inhparent from pg_inherits");

    res = PQexec(g_conn, query);
    if (!res || 
993 994 995
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getInherits(): SELECT failed\n");
        exit_nicely(g_conn);
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
    }
    
    ntups = PQntuples(res);

    *numInherits = ntups;

    inhinfo = (InhInfo*)malloc(ntups * sizeof(InhInfo));

    i_inhrel = PQfnumber(res,"inhrel");
    i_inhparent = PQfnumber(res,"inhparent");

    for (i=0;i<ntups;i++) {
1008 1009
        inhinfo[i].inhrel = strdup(PQgetvalue(res,i,i_inhrel));
        inhinfo[i].inhparent = strdup(PQgetvalue(res,i,i_inhparent));
1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
    }

    PQclear(res);
    res = PQexec(g_conn, "end");
    PQclear(res);
    return inhinfo;
}

/*
 * getTableAttrs -
 *    for each table in tblinfo, read its attributes types and names
 * 
 * this is implemented in a very inefficient way right now, looping
 * through the tblinfo and doing a join per table to find the attrs and their 
 * types
 *
 *  modifies tblinfo
 */
void
getTableAttrs(TableInfo* tblinfo, int numTables)
{
    int i,j;
    char q[MAXQUERYLEN];
    int i_attname;
    int i_typname;
1035
    int i_attlen;
1036 1037 1038 1039 1040
    PGresult *res;
    int ntups;

    for (i=0;i<numTables;i++)  {

1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
        /* skip archive tables */
        if (isArchiveName(tblinfo[i].relname))
            continue;

        /* find all the user attributes and their types*/
        /* we must read the attribute names in attribute number order! */
        /* because we will use the attnum to index into the attnames array 
           later */
        if (g_verbose) 
            fprintf(stderr,"%s finding the attrs and types for table: %s %s\n",
                g_comment_start,
                tblinfo[i].relname,
                g_comment_end);

        sprintf(q,"SELECT a.attnum, a.attname, t.typname, a.attlen "
                "from pg_attribute a, pg_type t "
                "where a.attrelid = '%s'::oid and a.atttypid = t.oid "
                "and a.attnum > 0 order by attnum",
                tblinfo[i].oid);
        res = PQexec(g_conn, q);
        if (!res || 
            PQresultStatus(res) != PGRES_TUPLES_OK) {
            fprintf(stderr,"getTableAttrs(): SELECT failed\n");
            exit_nicely(g_conn);
        }
        
        ntups = PQntuples(res);

        i_attname = PQfnumber(res,"attname");
        i_typname = PQfnumber(res,"typname");
        i_attlen  = PQfnumber(res,"attlen");

        tblinfo[i].numatts = ntups;
        tblinfo[i].attnames = (char**) malloc( ntups * sizeof(char*));
        tblinfo[i].typnames = (char**) malloc( ntups * sizeof(char*));
        tblinfo[i].attlen   = (int*) malloc(ntups * sizeof(int));
        tblinfo[i].inhAttrs = (int*) malloc (ntups * sizeof(int));
        tblinfo[i].parentRels = NULL;
        tblinfo[i].numParents = 0;
        for (j=0;j<ntups;j++) {
            tblinfo[i].attnames[j] = strdup(PQgetvalue(res,j,i_attname));
            tblinfo[i].typnames[j] = strdup(PQgetvalue(res,j,i_typname));
            tblinfo[i].attlen[j] = atoi(PQgetvalue(res,j,i_attlen));
            if (tblinfo[i].attlen[j] > 0) 
              tblinfo[i].attlen[j] = tblinfo[i].attlen[j] - 4;
            tblinfo[i].inhAttrs[j] = 0; /* this flag is set in flagInhAttrs()*/
        }
        PQclear(res);
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
    } 
}


/*
 * getIndices
 *    read all the user-defined indices information
 * from the system catalogs return them in the InhInfo* structure
 *
 * numIndices is set to the number of indices read in 
 *    
 *
 */
IndInfo*
getIndices(int *numIndices)
{
    int i;
    char query[MAXQUERYLEN];
    PGresult *res;
    int ntups;
    IndInfo *indinfo;

    int i_indexrelname;
    int i_indrelname;
    int i_indamname;
    int i_indproc;
    int i_indkey;
    int i_indclassname;
1117
    int i_indisunique;
1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
    
    /* find all the user-defined indices.
       We do not handle partial indices.
       We also assume that only single key indices 

       skip 'Xinx*' - indices on inversion objects

       this is a 5-way join !!
    */
       
    res = PQexec(g_conn, "begin");
    if (!res || 
1130 1131 1132
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"BEGIN command failed\n");
        exit_nicely(g_conn);
1133 1134 1135 1136
    }
    PQclear(res);

    sprintf(query,
1137 1138
            "SELECT t1.relname as indexrelname, t2.relname as indrelname, "
            "i.indproc, i.indkey[0], o.opcname as indclassname, "
1139
            "a.amname as indamname, i.indisunique from pg_index i, pg_class t1, "
1140 1141 1142 1143 1144 1145
            "pg_class t2, pg_opclass o, pg_am a "
            "where t1.oid = i.indexrelid and t2.oid = i.indrelid "
            "and o.oid = i.indclass[0] and t1.relam = a.oid and "
            "i.indexrelid > '%d'::oid and t2.relname !~ '^pg_' "
            "and t1.relname !~ '^Xinx' ;",
            g_last_builtin_oid);
1146 1147 1148

    res = PQexec(g_conn, query);
    if (!res || 
1149 1150 1151
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"getIndices(): SELECT failed\n");
        exit_nicely(g_conn);
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165
    }

    ntups = PQntuples(res);

    *numIndices = ntups;

    indinfo = (IndInfo*)malloc(ntups * sizeof (IndInfo));

    i_indexrelname = PQfnumber(res,"indexrelname");
    i_indrelname = PQfnumber(res,"indrelname");
    i_indamname = PQfnumber(res,"indamname");
    i_indproc = PQfnumber(res,"indproc");
    i_indkey = PQfnumber(res,"indkey");
    i_indclassname = PQfnumber(res,"indclassname");
1166
    i_indisunique = PQfnumber(res,"indisunique");
1167 1168

    for (i=0;i<ntups;i++) {
1169 1170 1171 1172 1173 1174
        indinfo[i].indexrelname = strdup(PQgetvalue(res,i,i_indexrelname));
        indinfo[i].indrelname = strdup(PQgetvalue(res,i,i_indrelname));
        indinfo[i].indamname = strdup(PQgetvalue(res,i,i_indamname));
        indinfo[i].indproc = strdup(PQgetvalue(res,i,i_indproc));
        indinfo[i].indkey = strdup(PQgetvalue(res,i,i_indkey));
        indinfo[i].indclassname = strdup(PQgetvalue(res,i,i_indclassname));
1175
        indinfo[i].indisunique = strdup(PQgetvalue(res,i,i_indisunique));
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
    }
    PQclear(res);
    res = PQexec(g_conn,"end");

    return indinfo;
}

/*
 * dumpTypes
 *    writes out to fout the queries to recreate all the user-defined types
 *
 */
void
dumpTypes(FILE* fout, FuncInfo* finfo, int numFuncs,
1190
          TypeInfo* tinfo, int numTypes)
1191 1192 1193 1194 1195 1196 1197
{
    int i;
    char q[MAXQUERYLEN];
    int funcInd;

    for (i=0;i<numTypes;i++) {

1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247
        /* skip all the builtin types */
        if (atoi(tinfo[i].oid) < g_last_builtin_oid)
            continue;

        /* skip relation types */
        if (atoi(tinfo[i].typrelid) != 0)
            continue;

        /* skip all array types that start w/ underscore */
        if ( (tinfo[i].typname[0] == '_') &&
             (strcmp(tinfo[i].typinput, "array_in") == 0))
            continue;

        /* before we create a type, we need to create the input and
           output functions for it, if they haven't been created already */
        funcInd = findFuncByName(finfo, numFuncs, tinfo[i].typinput);
        if (funcInd !=  -1) 
            dumpOneFunc(fout,finfo,funcInd,tinfo,numTypes);

        funcInd = findFuncByName(finfo, numFuncs, tinfo[i].typoutput);
        if (funcInd !=  -1) 
            dumpOneFunc(fout,finfo,funcInd,tinfo,numTypes);

        sprintf(q,
                "CREATE TYPE %s "
                "( internallength = %s, externallength = %s, input = %s, "
                "output = %s, send = %s, receive = %s, default = '%s'",
                tinfo[i].typname,
                tinfo[i].typlen,
                tinfo[i].typprtlen,
                tinfo[i].typinput,
                tinfo[i].typoutput,
                tinfo[i].typsend,
                tinfo[i].typreceive,
                tinfo[i].typdefault);

        if (tinfo[i].isArray) {
            char* elemType;

            elemType = findTypeByOid(tinfo, numTypes, tinfo[i].typelem);
            
            sprintf(q,"%s, element = %s, delimiter = '%s'",
                    q, elemType,tinfo[i].typdelim);
        }
        if (tinfo[i].passedbyvalue)
            strcat(q,",passedbyvalue);\n");
        else
            strcat(q,");\n");
            
        fputs(q,fout);
1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
    }
}

/*
 * dumpFuncs
 *    writes out to fout the queries to recreate all the user-defined functions
 *
 */
void
dumpFuncs(FILE* fout, FuncInfo* finfo, int numFuncs, 
1258
          TypeInfo *tinfo, int numTypes)
1259 1260 1261
{
    int i;
    for (i=0;i<numFuncs;i++)  {
1262
        dumpOneFunc(fout,finfo,i,tinfo,numTypes);
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274
    }
}

/*
 * dumpOneFunc:
 *    dump out only one function,  the index of which is given in the third
 *  argument
 *
 */

void
dumpOneFunc(FILE* fout, FuncInfo* finfo, int i,
1275
            TypeInfo *tinfo, int numTypes)
1276 1277 1278 1279 1280
{
    char q[MAXQUERYLEN];
    int j;
    
    if (finfo[i].dumped)
1281
        return;
1282
    else
1283
        finfo[i].dumped = 1;
1284 1285 1286

    sprintf(q,"CREATE FUNCTION %s (",finfo[i].proname);
    for (j=0;j<finfo[i].nargs;j++) {
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        char* typname;
        typname = findTypeByOid(tinfo, numTypes, finfo[i].argtypes[j]);
        sprintf(q, "%s%s%s",
                q,  
                (j > 0) ? "," : "",
                typname);
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    }
    sprintf(q,"%s ) RETURNS %s%s AS '%s' LANGUAGE '%s';\n",
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                q, 
            finfo[i].retset ? " SETOF " : "",
            findTypeByOid(tinfo, numTypes, finfo[i].prorettype),
            (finfo[i].lang) ? finfo[i].probin : finfo[i].prosrc,
            (finfo[i].lang) ? "C" : "SQL");
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    fputs(q,fout);

}

/*
 * dumpOprs
 *    writes out to fout the queries to recreate all the user-defined operators
 *
 */
void 
dumpOprs(FILE* fout, OprInfo* oprinfo, int numOperators,
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         TypeInfo *tinfo, int numTypes)
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{
    int i;
    char q[MAXQUERYLEN];
    char leftarg[MAXQUERYLEN];
    char rightarg[MAXQUERYLEN];
    char commutator[MAXQUERYLEN];
    char negator[MAXQUERYLEN];
    char restrict[MAXQUERYLEN];
    char join[MAXQUERYLEN];
    char sortop[MAXQUERYLEN];

    for (i=0;i<numOperators;i++) {

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        /* skip all the builtin oids */
        if (atoi(oprinfo[i].oid) < g_last_builtin_oid)
            continue;

        /* some operator are invalid because they were the result
           of user defining operators before commutators exist */
        if (strcmp(oprinfo[i].oprcode, "-") == 0)
            continue;

        leftarg[0] = '\0';
        rightarg[0] = '\0';
        /* right unary means there's a left arg
           and left unary means there's a right arg */
        if (strcmp(oprinfo[i].oprkind, "r") == 0 || 
            strcmp(oprinfo[i].oprkind, "b") == 0 ) {
            sprintf(leftarg, ", LEFTARG = %s ",
                    findTypeByOid(tinfo, numTypes, oprinfo[i].oprleft));
        } 
        if (strcmp(oprinfo[i].oprkind, "l") == 0 || 
            strcmp(oprinfo[i].oprkind, "b") == 0 ) {
            sprintf(rightarg, ", RIGHTARG = %s ",
                    findTypeByOid(tinfo, numTypes, oprinfo[i].oprright));
        }
        if (strcmp(oprinfo[i].oprcom, "0") == 0) 
            commutator[0] = '\0';
        else
            sprintf(commutator,", COMMUTATOR = %s ",
                    findOprByOid(oprinfo, numOperators, oprinfo[i].oprcom));

        if (strcmp(oprinfo[i].oprnegate, "0") == 0) 
            negator[0] = '\0';
        else
            sprintf(negator,", NEGATOR = %s ",
                    findOprByOid(oprinfo, numOperators, oprinfo[i].oprnegate));

        if (strcmp(oprinfo[i].oprrest, "-") == 0)
            restrict[0] = '\0';
        else
            sprintf(restrict,", RESTRICT = %s ", oprinfo[i].oprrest);
                    
        if (strcmp(oprinfo[i].oprjoin,"-") == 0)
            join[0] = '\0';
        else
            sprintf(join,", JOIN = %s ", oprinfo[i].oprjoin);
                    
        if (strcmp(oprinfo[i].oprlsortop, "0") == 0) 
            sortop[0] = '\0';
        else
            {
            sprintf(sortop,", SORT = %s ",
                    findOprByOid(oprinfo, numOperators,
                                 oprinfo[i].oprlsortop));
            if (strcmp(oprinfo[i].oprrsortop, "0") != 0)
                sprintf(sortop, "%s , %s", sortop, 
                        findOprByOid(oprinfo, numOperators,
                                     oprinfo[i].oprlsortop));
        }

        sprintf(q,
                "CREATE OPERATOR %s "
                "(PROCEDURE = %s %s %s %s %s %s %s %s %s);\n ",
                oprinfo[i].oprname,
                oprinfo[i].oprcode,
                leftarg,
                rightarg,
                commutator,
                negator,
                restrict,
                (strcmp(oprinfo[i].oprcanhash, "t")) ? ", HASHES" : "",
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                join,
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                sortop);
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        fputs(q,fout);
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    }
}

/*
 * dumpAggs
 *    writes out to fout the queries to create all the user-defined aggregates
 *
 */
void
dumpAggs(FILE* fout, AggInfo* agginfo, int numAggs,
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        TypeInfo *tinfo, int numTypes)
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{
    int i;
    char q[MAXQUERYLEN];
    char sfunc1[MAXQUERYLEN];
    char sfunc2[MAXQUERYLEN];
    char finalfunc[MAXQUERYLEN];
    char comma1[2], comma2[2];

    for (i=0;i<numAggs;i++) {
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        /* skip all the builtin oids */
        if (atoi(agginfo[i].oid) < g_last_builtin_oid)
            continue;

        if ( strcmp(agginfo[i].aggtransfn1, "-") == 0) 
            sfunc1[0] = '\0';
        else {
            sprintf(sfunc1, 
                    "SFUNC1 = %s, BASETYPE = %s, STYPE1 = %s",
                    agginfo[i].aggtransfn1,
                    findTypeByOid(tinfo,numTypes,agginfo[i].aggbasetype),
                    findTypeByOid(tinfo,numTypes,agginfo[i].aggtranstype1));
            if (agginfo[i].agginitval1)
                sprintf(sfunc1, "%s ,INITCOND1 = '%s'",
                        sfunc1, agginfo[i].agginitval1);
            
        }

        if ( strcmp(agginfo[i].aggtransfn2, "-") == 0) 
            sfunc2[0] = '\0';
        else {
            sprintf(sfunc2, 
                    "SFUNC2 = %s, STYPE2 = %s",
                    agginfo[i].aggtransfn2,
                    findTypeByOid(tinfo,numTypes,agginfo[i].aggtranstype2));
            if (agginfo[i].agginitval2)
                sprintf(sfunc2,"%s ,INITCOND2 = '%s'",
                        sfunc2, agginfo[i].agginitval2);
        }
        
        if ( strcmp(agginfo[i].aggfinalfn, "-") == 0)
            finalfunc[0] = '\0';
        else {
            sprintf(finalfunc, "FINALFUNC = %s", agginfo[i].aggfinalfn);
        }
        if (sfunc1[0] != '\0' && sfunc2[0] != '\0') {
            comma1[0] = ','; comma1[1] = '\0';
        } else
            comma1[0] = '\0';

        if (finalfunc[0] != '\0' && (sfunc1[0] != '\0' || sfunc2[0] != '\0')) {
            comma2[0] = ',';comma2[1] = '\0';
        } else
            comma2[0] = '\0';

        sprintf(q,"CREATE AGGREGATE %s ( %s %s %s %s %s );\n",
                agginfo[i].aggname,
                sfunc1,
                comma1,
                sfunc2,
                comma2,
                finalfunc);

        fputs(q,fout);
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    }
}

/*
 * dumpTables:
 *    write out to fout all the user-define tables
 */
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void dumpTables(FILE* fout, TableInfo *tblinfo, int numTables,
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           InhInfo *inhinfo, int numInherits,
           TypeInfo *tinfo, int numTypes, const char *tablename)
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{
    int i,j,k;
    char q[MAXQUERYLEN];
    char **parentRels;  /* list of names of parent relations */
    int numParents;
    int actual_atts; /* number of attrs in this CREATE statment */
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    const char *archiveMode;
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    for (i=0;i<numTables;i++) {

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        if (!tablename || (!strcmp(tblinfo[i].relname,tablename))) {

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	    /* Skip VIEW relations */
            if (isViewRule(tblinfo[i].relname))
                continue;

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            /* skip archive names*/
            if (isArchiveName(tblinfo[i].relname))
                continue;

            parentRels = tblinfo[i].parentRels;
            numParents = tblinfo[i].numParents;

            sprintf(q, "CREATE TABLE %s (", tblinfo[i].relname);
            actual_atts = 0;
            for (j=0;j<tblinfo[i].numatts;j++) {
                if (tblinfo[i].inhAttrs[j] == 0) {
                
                    /* Show lengths on bpchar and varchar */
                    if (!strcmp(tblinfo[i].typnames[j],"bpchar")) {
                        sprintf(q, "%s%s%s char",
                                q,
                                (actual_atts > 0) ? ", " : "",
                                tblinfo[i].attnames[j]);

                        /* stored length can be -1 (variable) */
                        if (tblinfo[i].attlen[j] > 0)
                                sprintf(q, "%s(%d)",
                                        q,
                                        tblinfo[i].attlen[j]);
                        actual_atts++;
                    }
                    else if (!strcmp(tblinfo[i].typnames[j],"varchar")) {
                        sprintf(q, "%s%s%s %s",
                                q,
                                (actual_atts > 0) ? ", " : "",
                                tblinfo[i].attnames[j],
                                tblinfo[i].typnames[j]);

                        /* stored length can be -1 (variable) */
                        if (tblinfo[i].attlen[j] > 0)
                                sprintf(q, "%s(%d)",
                                        q,
                                        tblinfo[i].attlen[j]);
                        actual_atts++;
                    }
                    else {    
                        sprintf(q, "%s%s%s %s",
                                q,
                                (actual_atts > 0) ? ", " : "",
                                tblinfo[i].attnames[j],
                                tblinfo[i].typnames[j]);
                        actual_atts++;
                    }
                }
            }

            strcat(q,")");

            if (numParents > 0) {
                sprintf(q, "%s inherits ( ",q);
                for (k=0;k<numParents;k++){
                sprintf(q, "%s%s%s",
                            q,
                            (k>0) ? ", " : "",
                            parentRels[k]);
                }
                strcat(q,")");
            }

            switch(tblinfo[i].relarch[0]) {
            case 'n':
                archiveMode = "none";
                break;
            case 'h':
                archiveMode = "heavy";
                break;
            case 'l':
                archiveMode = "light";
                break;
            default:
                fprintf(stderr, "unknown archive mode\n");
                archiveMode = "none";
                break;
            }
            
            sprintf(q, "%s archive = %s;\n",
                    q,
                    archiveMode);
            fputs(q,fout);
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        }
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    }
}

/*
 * dumpIndices:
 *    write out to fout all the user-define indices
 */
void 
dumpIndices(FILE* fout, IndInfo* indinfo, int numIndices,
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            TableInfo* tblinfo, int numTables, const char *tablename)
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{
    int i;
    int tableInd;
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    const char *attname;  /* the name of the indexed attribute  */
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    char *funcname; /* the name of the function to comput the index key from*/
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    int indkey;

    char q[MAXQUERYLEN];
    PGresult *res;

    for (i=0;i<numIndices;i++) {
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        tableInd = findTableByName(tblinfo, numTables,
                                   indinfo[i].indrelname);
        indkey = atoi(indinfo[i].indkey) - 1; 
        if (indkey == ObjectIdAttributeNumber - 1)
            attname = "oid";
        else
            attname = tblinfo[tableInd].attnames[indkey];
        if (strcmp(indinfo[i].indproc,"0") == 0) {
            funcname = NULL;
        } else {
            /* the funcname is an oid which we use to 
               find the name of the pg_proc.  We need to do this
               because getFuncs() only reads in the user-defined funcs
               not all the funcs.  We might not find what we want
               by looking in FuncInfo**/
            sprintf(q,
                    "SELECT proname from pg_proc "
                    "where pg_proc.oid = '%s'::oid",
                    indinfo[i].indproc);
            res = PQexec(g_conn, q);
            funcname = strdup(PQgetvalue(res, 0,
                                         PQfnumber(res,"proname")));
            PQclear(res);
        }
        
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        if (!tablename || (!strcmp(indinfo[i].indrelname,tablename))) {
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            sprintf(q,"CREATE %s INDEX %s on %s using %s (",
		    (strcmp(indinfo[i].indisunique, "t") == 0) ? "UNIQUE" : "",
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                    indinfo[i].indexrelname,
                    indinfo[i].indrelname,
                    indinfo[i].indamname);
            if (funcname) {
                sprintf(q, "%s %s(%s) %s);\n",
                        q,funcname, attname, indinfo[i].indclassname);
                free(funcname); 
            } else
                sprintf(q, "%s %s %s);\n",
                        q,attname,indinfo[i].indclassname);

            fputs(q,fout);
        }    
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    }

}
/*
 * dumpTuples --
 *    prints out the tuples in ASCII representation. The output is a valid
 *    input to COPY FROM stdin.
 *
 *    We only need to do this for POSTGRES 4.2 databases since the
 *    COPY TO statment doesn't escape newlines properly. It's been fixed
 *    in Postgres95.
 * 
 * the attrmap passed in tells how to map the attributes copied in to the
 * attributes copied out
 */
void
dumpTuples(PGresult *res, FILE *fout, int* attrmap)
{
    int j, k;
    int m, n;
    char **outVals = NULL; /* values to copy out */

    n = PQntuples(res);
    m = PQnfields(res);
    
    if ( m > 0 ) {
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        /*
         * Print out the tuples but only print tuples with at least
         * 1 field.
         */
        outVals = (char**)malloc(m * sizeof(char*));

        for (j = 0; j < n; j++) {
            for (k = 0; k < m; k++) {
                outVals[attrmap[k]] = PQgetvalue(res, j, k);
            }
            for (k = 0; k < m; k++) {
                char *pval = outVals[k];

                if (k!=0)
                    fputc('\t', fout);  /* delimiter for attribute */

                if (pval) {
                    while (*pval != '\0') {
                        /* escape tabs, newlines and backslashes */
                        if (*pval=='\t' || *pval=='\n' || *pval=='\\')
                            fputc('\\', fout);
                        fputc(*pval, fout);
                        pval++;
                    }
                }
            }
            fputc('\n', fout);  /* delimiter for a tuple */
        }
        free (outVals);
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    }
}

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/*
 * setMaxOid -
 * find the maximum oid and generate a COPY statement to set it
*/
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void
setMaxOid(FILE *fout)
{
    PGresult *res;
    Oid max_oid;
    
    res = PQexec(g_conn, "CREATE TABLE pgdump_oid (dummy int4)");
    if (!res || 
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"Can not create pgdump_oid table\n");
        exit_nicely(g_conn);
    }
    PQclear(res);
    res = PQexec(g_conn, "INSERT INTO pgdump_oid VALUES (0)");
    if (!res || 
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"Can not insert into pgdump_oid table\n");
        exit_nicely(g_conn);
    }
    max_oid = atol(PQoidStatus(res));
    if (max_oid == 0) {
        fprintf(stderr,"Invalid max id in setMaxOid\n");
        exit_nicely(g_conn);
    }
    PQclear(res);
    res = PQexec(g_conn, "DROP TABLE pgdump_oid;");
    if (!res || 
        PQresultStatus(res) != PGRES_COMMAND_OK) {
        fprintf(stderr,"Can not drop pgdump_oid table\n");
        exit_nicely(g_conn);
    }
    PQclear(res);
    if (g_verbose) 
        fprintf(stderr, "%s maximum system oid is %d %s\n",
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            g_comment_start,  max_oid, g_comment_end);
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    fprintf(fout, "CREATE TABLE pgdump_oid (dummy int4);\n");
    fprintf(fout, "COPY pgdump_oid WITH OIDS FROM stdin;\n");
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Bruce Momjian committed
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    fprintf(fout, "%-d\t0\n", max_oid);
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    fprintf(fout, "\\.\n");
    fprintf(fout, "DROP TABLE pgdump_oid;\n");
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}       
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/*
 * findLastBuiltInOid -
 * find the last built in oid 
 * we do this by looking up the oid of 'template1' in pg_database,
 * this is probably not foolproof but comes close 
*/

int
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findLastBuiltinOid(void)
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{
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    PGresult* res;
    int ntups;
    int last_oid;

    res = PQexec(g_conn, 
                 "SELECT oid from pg_database where datname = 'template1';");
    if (res == NULL ||
        PQresultStatus(res) != PGRES_TUPLES_OK) {
        fprintf(stderr,"pg_dump error in finding the template1 database\n");
        exit_nicely(g_conn);
    }
    ntups = PQntuples(res);
    if (ntups != 1) {
        fprintf(stderr,"pg_dump: couldn't find the template1 database.  "
                "You are really hosed.\nGiving up.\n");
        exit_nicely(g_conn);
    }
    last_oid = atoi(PQgetvalue(res, 0, PQfnumber(res, "oid")));
    PQclear(res);
    return last_oid;
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}


/*
 * checkForQuote:
 *    checks a string for quote characters and quotes them
 */
char*
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checkForQuote(const char* s)
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{
    char *r;
    char c;
    char *result;

    int j = 0;

    r = malloc(strlen(s)*3 + 1);  /* definitely long enough */

    while ( (c = *s) != '\0') {

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        if (c == '\'') {
            r[j++] = '\''; /* quote the single quotes */
        }
        r[j++] = c;
        s++;
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    }
    r[j] = '\0';

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    result = strdup(r);
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    free(r);

    return result;
    
}