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dpavlin |
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%{ |
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/* |
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* This SQL Lexer is copied from the O'Reilly Lex & Yacc book, 2nd Edition, |
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* 1995, by John R. Levine, Tony Mason, and Doug Brown. It probably contains |
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* words that we don't need for the Object Server, and will probably need |
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* enhancements. I removed the DDL and non-query words, but I'm going to |
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* leave in all other O'Reilly stuff unless it becomes real obvious that we |
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* don't need it. |
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* |
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* Jeremy Hickerson, 5/8/2002 |
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*/ |
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#define LEX_SOURCE_FILE |
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#include <string.h> |
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#include "obj_srvr.h" |
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/*#include "flexdef.h"*/ |
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#ifdef VMS |
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#include <unixio.h> |
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#endif |
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/* |
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#include <string.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <types.h> |
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#include <socket.h> |
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#include <in.h> |
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#include <inet.h> |
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#include <netdb.h> |
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#include <stdio.h> |
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#include <errno.h> |
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#include <time.h> |
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#include <timeb.h> |
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*/ |
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#include <ctype.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <stdbool.h> |
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#define bcopy(s,d,l) memcpy(d,s,l) |
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#define bzero(d,l) memset(d,0,l) |
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#define BUF_SIZE 2048 |
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char buf[BUF_SIZE]; |
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int sock; |
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#include "obj_srvr.tab.h" |
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int lineno = 1; |
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char mode; |
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void yyerror(char *s); |
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void connect_to_oracle_obj_srvr(char *host, int port); |
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/* macro to save the text of a SQL token */ |
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#define SV save_str(yytext) |
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/* macro to save the text and return a token */ |
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#define TOK(name) { SV; token = name; return name; } |
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/* read input through perl, since perl has access to oracle_obj_srvr socket */ |
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/* (we connected to it in perl, because if we connect in C (here) then haven't |
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figured out how to make perl see socket for output) */ |
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#define YY_INPUT(buf,result,max_size) { \ |
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strcpy(buf, call_perl_get_yyin(max_size) ); \ |
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result = strlen(buf); \ |
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} |
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%} |
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%s SQL |
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%% |
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/* EXEC[ \t]+SQL { BEGIN SQL; printf("SQL> "); start_save(); } */ |
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SQL { |
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BEGIN SQL; |
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call_perl_send_yyout("SQL> "); |
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if (mode == 'S') |
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call_perl_send_yyout("\n"); |
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start_save(); |
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} |
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QUIT { close(sock); exit(0); } |
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/* literal keyword tokens */ |
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<SQL>ALL TOK(ALL) |
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<SQL>AND TOK(AND) |
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<SQL>AVG TOK(AMMSC) |
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<SQL>MIN TOK(AMMSC) |
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<SQL>MAX TOK(AMMSC) |
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<SQL>SUM TOK(AMMSC) |
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<SQL>COUNT TOK(AMMSC) |
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<SQL>ANY TOK(ANY) |
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<SQL>AS TOK(AS) |
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<SQL>ASC TOK(ASC) |
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<SQL>AUTHORIZATION TOK(AUTHORIZATION) |
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<SQL>BETWEEN TOK(BETWEEN) |
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<SQL>BY TOK(BY) |
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<SQL>CHAR(ACTER)? TOK(CHARACTER) |
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<SQL>CHECK TOK(CHECK) |
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<SQL>CLOSE TOK(CLOSE) |
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<SQL>CONTINUE TOK(CONTINUE) |
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<SQL>CURRENT TOK(CURRENT) |
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<SQL>CURSOR TOK(CURSOR) |
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<SQL>DECIMAL TOK(DECIMAL) |
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<SQL>DECLARE TOK(DECLARE) |
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<SQL>DEFAULT TOK(DEFAULT) |
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<SQL>DESC TOK(DESC) |
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<SQL>DISTINCT TOK(DISTINCT) |
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<SQL>DOUBLE TOK(DOUBLE) |
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<SQL>ESCAPE TOK(ESCAPE) |
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<SQL>EXISTS TOK(EXISTS) |
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<SQL>FETCH TOK(FETCH) |
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<SQL>FLOAT TOK(FLOAT) |
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<SQL>FOR TOK(FOR) |
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<SQL>FOREIGN TOK(FOREIGN) |
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<SQL>FOUND TOK(FOUND) |
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<SQL>FROM TOK(FROM) |
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<SQL>GO[ \t]*TO TOK(GOTO) |
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<SQL>GROUP TOK(GROUP) |
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<SQL>HAVING TOK(HAVING) |
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<SQL>IN TOK(IN) |
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<SQL>INDICATOR TOK(INDICATOR) |
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<SQL>INT(EGER)? TOK(INTEGER) |
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<SQL>INTO TOK(INTO) |
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<SQL>IS TOK(IS) |
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<SQL>KEY TOK(KEY) |
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<SQL>LANGUAGE TOK(LANGUAGE) |
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<SQL>LIKE TOK(LIKE) |
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<SQL>NOT TOK(NOT) |
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<SQL>NULL TOK(NULLX) |
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<SQL>NUMERIC TOK(NUMERIC) |
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<SQL>OF TOK(OF) |
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<SQL>ON TOK(ON) |
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<SQL>OPEN TOK(OPEN) |
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<SQL>OPTION TOK(OPTION) |
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<SQL>OR TOK(OR) |
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<SQL>ORDER TOK(ORDER) |
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<SQL>PRECISION TOK(PRECISION) |
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<SQL>PRIMARY TOK(PRIMARY) |
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<SQL>PRIVILEGES TOK(PRIVILEGES) |
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<SQL>PROCEDURE TOK(PROCEDURE) |
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<SQL>REAL TOK(REAL) |
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<SQL>REFERENCES TOK(REFERENCES) |
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<SQL>SCHEMA TOK(SCHEMA) |
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<SQL>SELECT TOK(SELECT) |
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<SQL>SMALLINT TOK(SMALLINT) |
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<SQL>SOME TOK(SOME) |
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<SQL>SQLCODE TOK(SQLCODE) |
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<SQL>TO TOK(TO) |
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<SQL>UNION TOK(UNION) |
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<SQL>UNIQUE TOK(UNIQUE) |
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<SQL>USER TOK(USER) |
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<SQL>VALUES TOK(VALUES) |
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<SQL>WHENEVER TOK(WHENEVER) |
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<SQL>WHERE TOK(WHERE) |
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<SQL>WITH TOK(WITH) |
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<SQL>WORK TOK(WORK) |
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/* punctuation */ |
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<SQL>"=" TOK(COMP_EQ) |
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<SQL>"<>" TOK(COMP_NE1) |
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<SQL>"!=" TOK(COMP_NE2) |
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<SQL>"<" TOK(COMP_LT) |
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<SQL>">" TOK(COMP_GT) |
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<SQL>"<=" TOK(COMP_LE) |
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<SQL>">=" TOK(COMP_GE) |
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<SQL>[-+*/:(),.;] TOK(yytext[0]) |
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/* names */ |
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<SQL>[A-Za-z][A-Za-z0-9_]* TOK(NAME) |
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/* strings */ |
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<SQL>'[^'\n]*' TOK(STRING) |
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<SQL>'[^'\n]*$ { yyerror("Unterminated string"); } |
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/* numbers */ |
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<SQL>[0-9]+ | |
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<SQL>[0-9]+"."[0-9]* | |
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<SQL>"."[0-9]* TOK(INTNUM) |
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<SQL>[0-9]+[eE][+-]?[0-9]+ | |
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<SQL>[0-9]+"."[0-9]*[eE][+-]?[0-9]+ | |
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<SQL>"."[0-9]*[eE][+-]?[0-9]+ TOK(APPROXNUM) |
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/* whitespace */ |
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<SQL>\n { save_str(" "); lineno++; } |
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\n { save_str(" "); lineno++; } /* jh: non-SQL */ |
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<SQL>[ \t\r]+ save_str(" "); /* whitespace */ |
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<SQL>"--".* ; /* comment */ |
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/* anything else */ |
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. ; /* ignore */ |
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%% |
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void yyerror(char *s) { |
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printf("%d: %s at %s\n", lineno, s, yytext); |
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} |
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/* leave SQL lexing mode */ |
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un_sql() { |
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BEGIN INITIAL; |
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} |
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main(int argc, char *argv[]) { |
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if (argc < 4) { |
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fprintf(stderr, "Usage: obj_srvr <db_uid> db_passwd> <mode: (I)nteractive/(S)erver> [host] [port]\n"); |
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return; |
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} |
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char perlscript_to_embed[] = "obj_srvr.pl"; |
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static char *perl_argv[5]; |
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int i; |
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perl_argv[0] = argv[0]; |
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perl_argv[1] = perlscript_to_embed; |
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perl_argv[2] = argv[1]; |
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perl_argv[3] = argv[2]; |
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/* start the perl interpreter and compile obj_srvr.pl */ |
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if ( !strcmp(argv[3], "S") || !strcmp(argv[3], "s") ) { |
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strcpy(perl_argv[2], ""); |
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strcpy(perl_argv[3], ""); |
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} |
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embed_perl_obj_srvr(4, perl_argv, NULL); |
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/* connect to "wrapper" server running on foreign tnslsnr */ |
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if ( !strcmp(argv[3], "S") || !strcmp(argv[3], "s") ) { |
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mode = 'S'; |
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call_perl_connect2client(argv[4], argv[5]); |
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} |
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do { |
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if (yyparse() ) { |
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call_perl_send_yyout("\nQUIT\n"); |
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break; |
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} |
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} while (!feof(yyin) ) ; |
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end_perl(); |
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} |
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