#line 2 "psqlscan.c" /* A lexical scanner generated by flex */ /* Scanner skeleton version: * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $ */ #define FLEX_SCANNER #define YY_FLEX_MAJOR_VERSION 2 #define YY_FLEX_MINOR_VERSION 5 #include /* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */ #ifdef c_plusplus #ifndef __cplusplus #define __cplusplus #endif #endif #ifdef __cplusplus #include #include /* Use prototypes in function declarations. */ #define YY_USE_PROTOS /* The "const" storage-class-modifier is valid. */ #define YY_USE_CONST #else /* ! __cplusplus */ #if __STDC__ #define YY_USE_PROTOS #define YY_USE_CONST #endif /* __STDC__ */ #endif /* ! __cplusplus */ #ifdef __TURBOC__ #pragma warn -rch #pragma warn -use #include #include #define YY_USE_CONST #define YY_USE_PROTOS #endif #ifdef YY_USE_CONST #define yyconst const #else #define yyconst #endif #ifdef YY_USE_PROTOS #define YY_PROTO(proto) proto #else #define YY_PROTO(proto) () #endif /* Returned upon end-of-file. */ #define YY_NULL 0 /* Promotes a possibly negative, possibly signed char to an unsigned * integer for use as an array index. If the signed char is negative, * we want to instead treat it as an 8-bit unsigned char, hence the * double cast. */ #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c) /* Enter a start condition. This macro really ought to take a parameter, * but we do it the disgusting crufty way forced on us by the ()-less * definition of BEGIN. */ #define BEGIN yy_start = 1 + 2 * /* Translate the current start state into a value that can be later handed * to BEGIN to return to the state. The YYSTATE alias is for lex * compatibility. */ #define YY_START ((yy_start - 1) / 2) #define YYSTATE YY_START /* Action number for EOF rule of a given start state. */ #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) /* Special action meaning "start processing a new file". */ #define YY_NEW_FILE yyrestart( yyin ) #define YY_END_OF_BUFFER_CHAR 0 /* Size of default input buffer. */ #define YY_BUF_SIZE 16384 typedef struct yy_buffer_state *YY_BUFFER_STATE; extern int yyleng; extern FILE *yyin, *yyout; #define EOB_ACT_CONTINUE_SCAN 0 #define EOB_ACT_END_OF_FILE 1 #define EOB_ACT_LAST_MATCH 2 /* The funky do-while in the following #define is used to turn the definition * int a single C statement (which needs a semi-colon terminator). This * avoids problems with code like: * * if ( condition_holds ) * yyless( 5 ); * else * do_something_else(); * * Prior to using the do-while the compiler would get upset at the * "else" because it interpreted the "if" statement as being all * done when it reached the ';' after the yyless() call. */ /* Return all but the first 'n' matched characters back to the input stream. */ #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ *yy_cp = yy_hold_char; \ YY_RESTORE_YY_MORE_OFFSET \ yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \ YY_DO_BEFORE_ACTION; /* set up yytext again */ \ } \ while ( 0 ) #define unput(c) yyunput( c, yytext_ptr ) /* The following is because we cannot portably get our hands on size_t * (without autoconf's help, which isn't available because we want * flex-generated scanners to compile on their own). */ typedef unsigned int yy_size_t; struct yy_buffer_state { FILE *yy_input_file; char *yy_ch_buf; /* input buffer */ char *yy_buf_pos; /* current position in input buffer */ /* Size of input buffer in bytes, not including room for EOB * characters. */ yy_size_t yy_buf_size; /* Number of characters read into yy_ch_buf, not including EOB * characters. */ int yy_n_chars; /* Whether we "own" the buffer - i.e., we know we created it, * and can realloc() it to grow it, and should free() it to * delete it. */ int yy_is_our_buffer; /* Whether this is an "interactive" input source; if so, and * if we're using stdio for input, then we want to use getc() * instead of fread(), to make sure we stop fetching input after * each newline. */ int yy_is_interactive; /* Whether we're considered to be at the beginning of a line. * If so, '^' rules will be active on the next match, otherwise * not. */ int yy_at_bol; /* Whether to try to fill the input buffer when we reach the * end of it. */ int yy_fill_buffer; int yy_buffer_status; #define YY_BUFFER_NEW 0 #define YY_BUFFER_NORMAL 1 /* When an EOF's been seen but there's still some text to process * then we mark the buffer as YY_EOF_PENDING, to indicate that we * shouldn't try reading from the input source any more. We might * still have a bunch of tokens to match, though, because of * possible backing-up. * * When we actually see the EOF, we change the status to "new" * (via yyrestart()), so that the user can continue scanning by * just pointing yyin at a new input file. */ #define YY_BUFFER_EOF_PENDING 2 }; static YY_BUFFER_STATE yy_current_buffer = 0; /* We provide macros for accessing buffer states in case in the * future we want to put the buffer states in a more general * "scanner state". */ #define YY_CURRENT_BUFFER yy_current_buffer /* yy_hold_char holds the character lost when yytext is formed. */ static char yy_hold_char; static int yy_n_chars; /* number of characters read into yy_ch_buf */ int yyleng; /* Points to current character in buffer. */ static char *yy_c_buf_p = (char *) 0; static int yy_init = 1; /* whether we need to initialize */ static int yy_start = 0; /* start state number */ /* Flag which is used to allow yywrap()'s to do buffer switches * instead of setting up a fresh yyin. A bit of a hack ... */ static int yy_did_buffer_switch_on_eof; void yyrestart YY_PROTO(( FILE *input_file )); void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer )); void yy_load_buffer_state YY_PROTO(( void )); YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size )); void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b )); void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file )); void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b )); #define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer ) YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size )); YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str )); YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len )); static void *yy_flex_alloc YY_PROTO(( yy_size_t )); static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t )); static void yy_flex_free YY_PROTO(( void * )); #define yy_new_buffer yy_create_buffer #define yy_set_interactive(is_interactive) \ { \ if ( ! yy_current_buffer ) \ yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \ yy_current_buffer->yy_is_interactive = is_interactive; \ } #define yy_set_bol(at_bol) \ { \ if ( ! yy_current_buffer ) \ yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \ yy_current_buffer->yy_at_bol = at_bol; \ } #define YY_AT_BOL() (yy_current_buffer->yy_at_bol) #define yywrap() 1 #define YY_SKIP_YYWRAP typedef unsigned char YY_CHAR; FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0; typedef int yy_state_type; extern char *yytext; #define yytext_ptr yytext static yyconst short yy_nxt[][38] = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 33, 34, 35, 36, 35, 37, 38, 39, 40, 41, 42, 43, 40, 40, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 51, 54, 55, 56, 37, 52, 51, 54, 51, 51, 55, 37, 51 }, { 33, 34, 35, 36, 35, 37, 38, 39, 40, 41, 42, 43, 40, 40, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 51, 54, 55, 56, 37, 52, 51, 54, 51, 51, 55, 37, 51 }, { 33, 57, 57, 57, 57, 57, 57, 57, 57, 58, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57 }, { 33, 57, 57, 57, 57, 57, 57, 57, 57, 58, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57 }, { 33, 59, 59, 59, 59, 60, 59, 59, 60, 59, 59, 59, 61, 60, 59, 60, 59, 62, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 60, 59, 59, 59, 59, 59, 59, 60, 59 }, { 33, 59, 59, 59, 59, 60, 59, 59, 60, 59, 59, 59, 61, 60, 59, 60, 59, 62, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 60, 59, 59, 59, 59, 59, 59, 60, 59 }, { 33, 63, 63, 63, 63, 63, 64, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63 }, { 33, 63, 63, 63, 63, 63, 64, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63 }, { 33, 65, 65, 65, 65, 65, 65, 65, 65, 66, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65 }, { 33, 65, 65, 65, 65, 65, 65, 65, 65, 66, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65 }, { 33, 67, 67, 68, 67, 67, 67, 67, 67, 69, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 70, 67, 67, 67, 67, 67, 67, 67, 67, 67 }, { 33, 67, 67, 68, 67, 67, 67, 67, 67, 69, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 70, 67, 67, 67, 67, 67, 67, 67, 67, 67 }, { 33, 71, 71, 71, 71, 71, 71, 71, 71, 72, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71 }, { 33, 71, 71, 71, 71, 71, 71, 71, 71, 72, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71 }, { 33, 73, 73, 74, 73, 73, 73, 75, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73 }, { 33, 73, 73, 74, 73, 73, 73, 75, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73 }, { 33, 76, 77, 78, 77, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 77, 76, 76, 76, 76, 76, 76, 76, 76, 76 }, { 33, 76, 77, 78, 77, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 77, 76, 76, 76, 76, 76, 76, 76, 76, 76 }, { 33, 79, 80, 81, 80, 79, 82, 79, 79, 83, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 84, 79, 79, 79, 79, 79, 79, 79, 85, 86, 79, 79, 79, 79, 79, 79, 87, 79 }, { 33, 79, 80, 81, 80, 79, 82, 79, 79, 83, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 84, 79, 79, 79, 79, 79, 79, 79, 85, 86, 79, 79, 79, 79, 79, 79, 87, 79 }, { 33, 88, 88, 88, 88, 88, 88, 88, 88, 89, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 90, 88, 88, 88, 88, 88, 88, 88, 88, 88 }, { 33, 88, 88, 88, 88, 88, 88, 88, 88, 89, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 90, 88, 88, 88, 88, 88, 88, 88, 88, 88 }, { 33, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 92, 91, 91, 91, 91, 91, 91, 91, 91 }, { 33, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 92, 91, 91, 91, 91, 91, 91, 91, 91 }, { 33, 93, 94, 95, 94, 93, 96, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 97, 93, 93, 93, 93, 93, 93, 93, 93, 93 }, { 33, 93, 94, 95, 94, 93, 96, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 97, 93, 93, 93, 93, 93, 93, 93, 93, 93 }, { 33, 98, 98, 98, 98, 98, 99, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98 }, { 33, 98, 98, 98, 98, 98, 99, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98 }, { 33, 100, 101, 102, 101, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100 }, { 33, 100, 101, 102, 101, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100 }, { 33, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 104, 103, 103, 103, 103, 103, 103, 103, 103, 103 }, { 33, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 104, 103, 103, 103, 103, 103, 103, 103, 103, 103 }, { -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33, -33 }, { 33, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34 }, { 33, -35, 105, 105, 105, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35 }, { 33, -36, 105, 105, 105, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36 }, { 33, -37, -37, -37, -37, 106, -37, -37, 106, -37, -37, -37, 106, 106, -37, 106, -37, 106, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, 106, -37, -37, -37, -37, -37, -37, 106, -37 }, { 33, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38 }, { 33, -39, -39, -39, -39, -39, -39, 107, -39, -39, -39, -39, -39, -39, -39, -39, -39, -39, 108, 108, -39, -39, 109, 109, 109, 109, 109, 109, -39, -39, 109, 109, 109, 109, 109, 109, -39, 109 }, { 33, -40, -40, -40, -40, 106, -40, -40, 106, -40, -40, -40, 106, 106, -40, 106, -40, 106, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, 106, -40, -40, -40, -40, -40, -40, 106, -40 }, { 33, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41 }, { 33, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42 }, { 33, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43 }, { 33, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44 }, { 33, -45, -45, -45, -45, 106, -45, -45, 106, -45, -45, -45, 106, 106, -45, 110, -45, 106, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, 106, -45, -45, -45, -45, -45, -45, 106, -45 }, { 33, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, 111, 111, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46 }, { 33, -47, -47, -47, -47, 106, -47, -47, 106, -47, -47, -47, 112, 106, -47, 106, -47, 106, -47, -47, -47, -47, -47, -47, -47, -47, -47, -47, -47, 106, -47, -47, -47, -47, -47, -47, 106, -47 }, { 33, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, 113, -48, 114, 114, -48, -48, -48, -48, 115, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48 }, { 33, -49, -49, -49, -49, -49, -49, -49, -49, -49, -49, 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189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189 }, { 33, 209, 210, 211, 211, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 212, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209 }, { 33, 193, 194, 136, 136, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 195, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193 }, { 33, 193, 194, 136, 136, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 195, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193 }, { 33, 193, 194, 136, 136, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 213, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193 }, { 33, 214, 215, 216, 216, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 217, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214 }, { 33, 197, 198, 140, 140, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 199, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197 }, { 33, 197, 198, 140, 140, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 199, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197 }, { 33, 197, 198, 140, 140, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 218, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197 }, { 33, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200, -200 }, { 33, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201, -201 }, { 33, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202, -202 }, { 33, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203, -203 }, { 33, 204, 205, 206, 206, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 207, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204 }, { 33, 204, 205, 206, 206, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 207, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204 }, { 33, -206, 170, 170, 170, -206, -206, -206, -206, 171, -206, -206, -206, -206, -206, 172, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206, -206 }, { 33, 204, 205, 206, 206, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 219, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204 }, { 33, 189, 190, 126, 126, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 208, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189, 189 }, { 33, 209, 210, 211, 211, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 212, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209 }, { 33, 209, 210, 211, 211, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 212, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209 }, { 33, -211, 175, 175, 175, -211, -211, -211, -211, 176, -211, -211, -211, -211, -211, 177, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211, -211 }, { 33, 209, 210, 211, 211, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 220, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209 }, { 33, 193, 194, 136, 136, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 213, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193 }, { 33, 214, 215, 216, 216, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 217, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214 }, { 33, 214, 215, 216, 216, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 217, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214 }, { 33, -216, 179, 179, 179, -216, -216, -216, -216, 180, -216, -216, -216, -216, -216, 181, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216, -216 }, { 33, 214, 215, 216, 216, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 221, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214 }, { 33, 197, 198, 140, 140, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 218, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197 }, { 33, 204, 205, 206, 206, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 219, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204 }, { 33, 209, 210, 211, 211, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 220, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209 }, { 33, 214, 215, 216, 216, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 221, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214 }, } ; static yy_state_type yy_get_previous_state YY_PROTO(( void )); static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state )); static int yy_get_next_buffer YY_PROTO(( void )); static void yy_fatal_error YY_PROTO(( yyconst char msg[] )); /* Done after the current pattern has been matched and before the * corresponding action - sets up yytext. */ #define YY_DO_BEFORE_ACTION \ yytext_ptr = yy_bp; \ yyleng = (int) (yy_cp - yy_bp); \ yy_hold_char = *yy_cp; \ *yy_cp = '\0'; \ yy_c_buf_p = yy_cp; #define YY_NUM_RULES 91 #define YY_END_OF_BUFFER 92 static yyconst short int yy_accept[222] = { 0, 0, 0, 12, 12, 0, 0, 0, 0, 11, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 92, 57, 1, 1, 49, 37, 57, 48, 19, 42, 43, 48, 48, 48, 48, 51, 48, 44, 56, 56, 56, 56, 56, 46, 12, 9, 5, 5, 6, 6, 40, 38, 11, 16, 25, 25, 21, 30, 24, 21, 34, 34, 36, 59, 58, 58, 67, 60, 60, 66, 62, 64, 61, 63, 65, 78, 68, 78, 80, 79, 84, 81, 81, 83, 82, 86, 85, 88, 87, 87, 90, 90, 1, 49, 31, 50, 32, 1, 52, 2, 52, 51, 54, 47, 41, 56, 8, 20, 18, 15, 45, 12, 9, 9, 10, 5, 7, 4, 3, 40, 39, 11, 16, 16, 17, 25, 21, 21, 23, 22, 26, 27, 26, 24, 34, 33, 35, 60, 64, 69, 77, 75, 72, 74, 70, 73, 71, 77, 87, 89, 32, 1, 1, 2, 52, 55, 53, 9, 14, 10, 9, 3, 16, 13, 17, 16, 21, 29, 22, 21, 27, 28, 35, 75, 76, 9, 9, 9, 9, 16, 16, 16, 16, 21, 21, 21, 21, 27, 28, 75, 76, 9, 9, 9, 9, 9, 16, 16, 16, 16, 16, 21, 21, 21, 21, 21, 9, 16, 21 } ; static yyconst int yy_ec[256] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 2, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 5, 6, 5, 7, 8, 5, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 20, 21, 8, 8, 8, 5, 5, 22, 23, 22, 22, 24, 22, 25, 25, 25, 25, 25, 25, 25, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 27, 25, 25, 14, 28, 14, 8, 25, 29, 22, 30, 22, 22, 24, 31, 25, 25, 25, 25, 25, 25, 25, 32, 25, 25, 25, 33, 25, 34, 25, 25, 25, 35, 25, 25, 1, 36, 1, 5, 1, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37 } ; /* The intent behind this definition is that it'll catch * any uses of REJECT which flex missed. */ #define REJECT reject_used_but_not_detected #define yymore() yymore_used_but_not_detected #define YY_MORE_ADJ 0 #define YY_RESTORE_YY_MORE_OFFSET char *yytext; #line 1 "psqlscan.l" #define INITIAL 0 #line 2 "psqlscan.l" /*------------------------------------------------------------------------- * * psqlscan.l * lexical scanner for psql * * This code is mainly needed to determine where the end of a SQL statement * is: we are looking for semicolons that are not within quotes, comments, * or parentheses. The most reliable way to handle this is to borrow the * backend's flex lexer rules, lock, stock, and barrel. The rules below * are (except for a few) the same as the backend's, but their actions are * just ECHO whereas the backend's actions generally do other things. * * XXX The rules in this file must be kept in sync with the backend lexer!!! * * XXX Avoid creating backtracking cases --- see the backend lexer for info. * * The most difficult aspect of this code is that we need to work in multibyte * encodings that are not ASCII-safe. A "safe" encoding is one in which each * byte of a multibyte character has the high bit set (it's >= 0x80). Since * all our lexing rules treat all high-bit-set characters alike, we don't * really need to care whether such a byte is part of a sequence or not. * In an "unsafe" encoding, we still expect the first byte of a multibyte * sequence to be >= 0x80, but later bytes might not be. If we scan such * a sequence as-is, the lexing rules could easily be fooled into matching * such bytes to ordinary ASCII characters. Our solution for this is to * substitute 0xFF for each non-first byte within the data presented to flex. * The flex rules will then pass the FF's through unmolested. The emit() * subroutine is responsible for looking back to the original string and * replacing FF's with the corresponding original bytes. * * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION * $PostgreSQL: pgsql/src/bin/psql/psqlscan.l,v 1.20 2006/05/31 22:11:44 tgl Exp $ * *------------------------------------------------------------------------- */ #include "postgres_fe.h" #include "psqlscan.h" #include #include "mb/pg_wchar.h" #include "common.h" #include "settings.h" #include "variables.h" /* * We use a stack of flex buffers to handle substitution of psql variables. * Each stacked buffer contains the as-yet-unread text from one psql variable. * When we pop the stack all the way, we resume reading from the outer buffer * identified by scanbufhandle. */ typedef struct StackElem { YY_BUFFER_STATE buf; /* flex input control structure */ char *bufstring; /* data actually being scanned by flex */ char *origstring; /* copy of original data, if needed */ struct StackElem *next; } StackElem; /* * All working state of the lexer must be stored in PsqlScanStateData * between calls. This allows us to have multiple open lexer operations, * which is needed for nested include files. The lexer itself is not * recursive, but it must be re-entrant. */ typedef struct PsqlScanStateData { StackElem *buffer_stack; /* stack of variable expansion buffers */ /* * These variables always refer to the outer buffer, never to any * stacked variable-expansion buffer. */ YY_BUFFER_STATE scanbufhandle; char *scanbuf; /* start of outer-level input buffer */ const char *scanline; /* current input line at outer level */ /* safe_encoding, curline, refline are used by emit() to replace FFs */ int encoding; /* encoding being used now */ bool safe_encoding; /* is current encoding "safe"? */ const char *curline; /* actual flex input string for cur buf */ const char *refline; /* original data for cur buffer */ /* * All this state lives across successive input lines, until explicitly * reset by psql_scan_reset. */ int start_state; /* saved YY_START */ int paren_depth; /* depth of nesting in parentheses */ int xcdepth; /* depth of nesting in slash-star comments */ char *dolqstart; /* current $foo$ quote start string */ } PsqlScanStateData; static PsqlScanState cur_state; /* current state while active */ static PQExpBuffer output_buf; /* current output buffer */ /* these variables do not need to be saved across calls */ static enum slash_option_type option_type; static char *option_quote; /* Return values from yylex() */ #define LEXRES_EOL 0 /* end of input */ #define LEXRES_SEMI 1 /* command-terminating semicolon found */ #define LEXRES_BACKSLASH 2 /* backslash command start */ #define LEXRES_OK 3 /* OK completion of backslash argument */ int yylex(void); static void push_new_buffer(const char *newstr); static YY_BUFFER_STATE prepare_buffer(const char *txt, int len, char **txtcopy); static void emit(const char *txt, int len); #define ECHO emit(yytext, yyleng) #define YY_NEVER_INTERACTIVE 1 #define YY_NO_UNPUT 1 /* * All of the following definitions and rules should exactly match * src/backend/parser/scan.l so far as the flex patterns are concerned. * The rule bodies are just ECHO as opposed to what the backend does, * however. (But be sure to duplicate code that affects the lexing process, * such as BEGIN().) Also, psqlscan uses a single <> rule whereas * scan.l has a separate one for each exclusive state. */ /* * OK, here is a short description of lex/flex rules behavior. * The longest pattern which matches an input string is always chosen. * For equal-length patterns, the first occurring in the rules list is chosen. * INITIAL is the starting state, to which all non-conditional rules apply. * Exclusive states change parsing rules while the state is active. When in * an exclusive state, only those rules defined for that state apply. * * We use exclusive states for quoted strings, extended comments, * and to eliminate parsing troubles for numeric strings. * Exclusive states: * bit string literal * extended C-style comments * delimited identifiers (double-quoted identifiers) * hexadecimal numeric string * standard quoted strings * extended quoted strings (support backslash escape sequences) * $foo$ quoted strings */ #define xb 1 #define xc 2 #define xd 3 #define xh 4 #define xe 5 #define xq 6 #define xdolq 7 /* Additional exclusive states for psql only: lex backslash commands */ #define xslashcmd 8 #define xslasharg 9 #define xslashquote 10 #define xslashbackquote 11 #define xslashdefaultarg 12 #define xslashquotedarg 13 #define xslashwholeline 14 #define xslashend 15 /* * In order to make the world safe for Windows and Mac clients as well as * Unix ones, we accept either \n or \r as a newline. A DOS-style \r\n * sequence will be seen as two successive newlines, but that doesn't cause * any problems. Comments that start with -- and extend to the next * newline are treated as equivalent to a single whitespace character. * * NOTE a fine point: if there is no newline following --, we will absorb * everything to the end of the input as a comment. This is correct. Older * versions of Postgres failed to recognize -- as a comment if the input * did not end with a newline. * * XXX perhaps \f (formfeed) should be treated as a newline as well? */ /* * SQL requires at least one newline in the whitespace separating * string literals that are to be concatenated. Silly, but who are we * to argue? Note that {whitespace_with_newline} should not have * after * it, whereas {whitespace} should generally have a * after it... */ /* * To ensure that {quotecontinue} can be scanned without having to back up * if the full pattern isn't matched, we include trailing whitespace in * {quotestop}. This matches all cases where {quotecontinue} fails to match, * except for {quote} followed by whitespace and just one "-" (not two, * which would start a {comment}). To cover that we have {quotefail}. * The actions for {quotestop} and {quotefail} must throw back characters * beyond the quote proper. */ /* Bit string * It is tempting to scan the string for only those characters * which are allowed. However, this leads to silently swallowed * characters if illegal characters are included in the string. * For example, if xbinside is [01] then B'ABCD' is interpreted * as a zero-length string, and the ABCD' is lost! * Better to pass the string forward and let the input routines * validate the contents. */ /* Hexadecimal number */ /* National character */ /* Quoted string that allows backslash escapes */ /* Extended quote * xqdouble implements embedded quote, '''' */ /* $foo$ style quotes ("dollar quoting") * The quoted string starts with $foo$ where "foo" is an optional string * in the form of an identifier, except that it may not contain "$", * and extends to the first occurrence of an identical string. * There is *no* processing of the quoted text. * * {dolqfailed} is an error rule to avoid scanner backup when {dolqdelim} * fails to match its trailing "$". */ /* Double quote * Allows embedded spaces and other special characters into identifiers. */ /* C-style comments * * The "extended comment" syntax closely resembles allowable operator syntax. * The tricky part here is to get lex to recognize a string starting with * slash-star as a comment, when interpreting it as an operator would produce * a longer match --- remember lex will prefer a longer match! Also, if we * have something like plus-slash-star, lex will think this is a 3-character * operator whereas we want to see it as a + operator and a comment start. * The solution is two-fold: * 1. append {op_chars}* to xcstart so that it matches as much text as * {operator} would. Then the tie-breaker (first matching rule of same * length) ensures xcstart wins. We put back the extra stuff with yyless() * in case it contains a star-slash that should terminate the comment. * 2. In the operator rule, check for slash-star within the operator, and * if found throw it back with yyless(). This handles the plus-slash-star * problem. * Dash-dash comments have similar interactions with the operator rule. */ /* * "self" is the set of chars that should be returned as single-character * tokens. "op_chars" is the set of chars that can make up "Op" tokens, * which can be one or more characters long (but if a single-char token * appears in the "self" set, it is not to be returned as an Op). Note * that the sets overlap, but each has some chars that are not in the other. * * If you change either set, adjust the character lists appearing in the * rule for "operator"! */ /* we no longer allow unary minus in numbers. * instead we pass it separately to parser. there it gets * coerced via doNegate() -- Leon aug 20 1999 * * {realfail1} and {realfail2} are added to prevent the need for scanner * backup when the {real} rule fails to match completely. */ /* * Dollar quoted strings are totally opaque, and no escaping is done on them. * Other quoted strings must allow some special characters such as single-quote * and newline. * Embedded single-quotes are implemented both in the SQL standard * style of two adjacent single quotes "''" and in the Postgres/Java style * of escaped-quote "\'". * Other embedded escaped characters are matched explicitly and the leading * backslash is dropped from the string. * Note that xcstart must appear before operator, as explained above! * Also whitespace (comment) must appear before operator. */ #line 2296 "psqlscan.c" /* Macros after this point can all be overridden by user definitions in * section 1. */ #ifndef YY_SKIP_YYWRAP #ifdef __cplusplus extern "C" int yywrap YY_PROTO(( void )); #else extern int yywrap YY_PROTO(( void )); #endif #endif #ifndef YY_NO_UNPUT static void yyunput YY_PROTO(( int c, char *buf_ptr )); #endif #ifndef yytext_ptr static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int )); #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen YY_PROTO(( yyconst char * )); #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput YY_PROTO(( void )); #else static int input YY_PROTO(( void )); #endif #endif #if YY_STACK_USED static int yy_start_stack_ptr = 0; static int yy_start_stack_depth = 0; static int *yy_start_stack = 0; #ifndef YY_NO_PUSH_STATE static void yy_push_state YY_PROTO(( int new_state )); #endif #ifndef YY_NO_POP_STATE static void yy_pop_state YY_PROTO(( void )); #endif #ifndef YY_NO_TOP_STATE static int yy_top_state YY_PROTO(( void )); #endif #else #define YY_NO_PUSH_STATE 1 #define YY_NO_POP_STATE 1 #define YY_NO_TOP_STATE 1 #endif #ifdef YY_MALLOC_DECL YY_MALLOC_DECL #else #if __STDC__ #ifndef __cplusplus #include #endif #else /* Just try to get by without declaring the routines. This will fail * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int) * or sizeof(void*) != sizeof(int). */ #endif #endif /* Amount of stuff to slurp up with each read. */ #ifndef YY_READ_BUF_SIZE #define YY_READ_BUF_SIZE 8192 #endif /* Copy whatever the last rule matched to the standard output. */ #ifndef ECHO /* This used to be an fputs(), but since the string might contain NUL's, * we now use fwrite(). */ #define ECHO (void) fwrite( yytext, yyleng, 1, yyout ) #endif /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, * is returned in "result". */ #ifndef YY_INPUT #define YY_INPUT(buf,result,max_size) \ if ( yy_current_buffer->yy_is_interactive ) \ { \ int c = '*', n; \ for ( n = 0; n < max_size && \ (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ buf[n] = (char) c; \ if ( c == '\n' ) \ buf[n++] = (char) c; \ if ( c == EOF && ferror( yyin ) ) \ YY_FATAL_ERROR( "input in flex scanner failed" ); \ result = n; \ } \ else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \ && ferror( yyin ) ) \ YY_FATAL_ERROR( "input in flex scanner failed" ); #endif /* No semi-colon after return; correct usage is to write "yyterminate();" - * we don't want an extra ';' after the "return" because that will cause * some compilers to complain about unreachable statements. */ #ifndef yyterminate #define yyterminate() return YY_NULL #endif /* Number of entries by which start-condition stack grows. */ #ifndef YY_START_STACK_INCR #define YY_START_STACK_INCR 25 #endif /* Report a fatal error. */ #ifndef YY_FATAL_ERROR #define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) #endif /* Default declaration of generated scanner - a define so the user can * easily add parameters. */ #ifndef YY_DECL #define YY_DECL int yylex YY_PROTO(( void )) #endif /* Code executed at the beginning of each rule, after yytext and yyleng * have been set up. */ #ifndef YY_USER_ACTION #define YY_USER_ACTION #endif /* Code executed at the end of each rule. */ #ifndef YY_BREAK #define YY_BREAK break; #endif #define YY_RULE_SETUP \ YY_USER_ACTION YY_DECL { register yy_state_type yy_current_state; register char *yy_cp, *yy_bp; register int yy_act; #line 360 "psqlscan.l" #line 2450 "psqlscan.c" if ( yy_init ) { yy_init = 0; #ifdef YY_USER_INIT YY_USER_INIT; #endif if ( ! yy_start ) yy_start = 1; /* first start state */ if ( ! yyin ) yyin = stdin; if ( ! yyout ) yyout = stdout; if ( ! yy_current_buffer ) yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); yy_load_buffer_state(); } while ( 1 ) /* loops until end-of-file is reached */ { yy_cp = yy_c_buf_p; /* Support of yytext. */ *yy_cp = yy_hold_char; /* yy_bp points to the position in yy_ch_buf of the start of * the current run. */ yy_bp = yy_cp; yy_current_state = yy_start; yy_match: while ( (yy_current_state = yy_nxt[yy_current_state][yy_ec[YY_SC_TO_UI(*yy_cp)]]) > 0 ) ++yy_cp; yy_current_state = -yy_current_state; yy_find_action: yy_act = yy_accept[yy_current_state]; YY_DO_BEFORE_ACTION; do_action: /* This label is used only to access EOF actions. */ switch ( yy_act ) { /* beginning of action switch */ case 1: YY_RULE_SETUP #line 362 "psqlscan.l" { /* * Note that the whitespace rule includes both true * whitespace and single-line ("--" style) comments. * We suppress whitespace at the start of the query * buffer. We also suppress all single-line comments, * which is pretty dubious but is the historical * behavior. */ if (!(output_buf->len == 0 || yytext[0] == '-')) ECHO; } YY_BREAK case 2: YY_RULE_SETUP #line 375 "psqlscan.l" { cur_state->xcdepth = 0; BEGIN(xc); /* Put back any characters past slash-star; see above */ yyless(2); ECHO; } YY_BREAK case 3: YY_RULE_SETUP #line 383 "psqlscan.l" { cur_state->xcdepth++; /* Put back any characters past slash-star; see above */ yyless(2); ECHO; } YY_BREAK case 4: YY_RULE_SETUP #line 390 "psqlscan.l" { if (cur_state->xcdepth <= 0) { BEGIN(INITIAL); } else cur_state->xcdepth--; ECHO; } YY_BREAK case 5: YY_RULE_SETUP #line 400 "psqlscan.l" { ECHO; } YY_BREAK case 6: YY_RULE_SETUP #line 404 "psqlscan.l" { ECHO; } YY_BREAK case 7: YY_RULE_SETUP #line 408 "psqlscan.l" { ECHO; } YY_BREAK case 8: YY_RULE_SETUP #line 412 "psqlscan.l" { BEGIN(xb); ECHO; } YY_BREAK case 9: #line 417 "psqlscan.l" case 10: YY_RULE_SETUP #line 417 "psqlscan.l" { yyless(1); BEGIN(INITIAL); ECHO; } YY_BREAK case 11: #line 423 "psqlscan.l" case 12: YY_RULE_SETUP #line 423 "psqlscan.l" { ECHO; } YY_BREAK case 13: #line 427 "psqlscan.l" case 14: YY_RULE_SETUP #line 427 "psqlscan.l" { ECHO; } YY_BREAK case 15: YY_RULE_SETUP #line 431 "psqlscan.l" { /* Hexadecimal bit type. * At some point we should simply pass the string * forward to the parser and label it there. * In the meantime, place a leading "x" on the string * to mark it for the input routine as a hex string. */ BEGIN(xh); ECHO; } YY_BREAK case 16: #line 442 "psqlscan.l" case 17: YY_RULE_SETUP #line 442 "psqlscan.l" { yyless(1); BEGIN(INITIAL); ECHO; } YY_BREAK case 18: YY_RULE_SETUP #line 448 "psqlscan.l" { yyless(1); /* eat only 'n' this time */ ECHO; } YY_BREAK case 19: YY_RULE_SETUP #line 453 "psqlscan.l" { if (standard_strings()) BEGIN(xq); else BEGIN(xe); ECHO; } YY_BREAK case 20: YY_RULE_SETUP #line 460 "psqlscan.l" { BEGIN(xe); ECHO; } YY_BREAK case 21: #line 465 "psqlscan.l" case 22: YY_RULE_SETUP #line 465 "psqlscan.l" { yyless(1); BEGIN(INITIAL); ECHO; } YY_BREAK case 23: YY_RULE_SETUP #line 470 "psqlscan.l" { ECHO; } YY_BREAK case 24: YY_RULE_SETUP #line 473 "psqlscan.l" { ECHO; } YY_BREAK case 25: YY_RULE_SETUP #line 476 "psqlscan.l" { ECHO; } YY_BREAK case 26: YY_RULE_SETUP #line 479 "psqlscan.l" { ECHO; } YY_BREAK case 27: YY_RULE_SETUP #line 482 "psqlscan.l" { ECHO; } YY_BREAK case 28: YY_RULE_SETUP #line 485 "psqlscan.l" { ECHO; } YY_BREAK case 29: YY_RULE_SETUP #line 488 "psqlscan.l" { ECHO; } YY_BREAK case 30: YY_RULE_SETUP #line 491 "psqlscan.l" { /* This is only needed for \ just before EOF */ ECHO; } YY_BREAK case 31: YY_RULE_SETUP #line 496 "psqlscan.l" { cur_state->dolqstart = pg_strdup(yytext); BEGIN(xdolq); ECHO; } YY_BREAK case 32: YY_RULE_SETUP #line 501 "psqlscan.l" { /* throw back all but the initial "$" */ yyless(1); ECHO; } YY_BREAK case 33: YY_RULE_SETUP #line 506 "psqlscan.l" { if (strcmp(yytext, cur_state->dolqstart) == 0) { free(cur_state->dolqstart); cur_state->dolqstart = NULL; BEGIN(INITIAL); } else { /* * When we fail to match $...$ to dolqstart, transfer * the $... part to the output, but put back the final * $ for rescanning. Consider $delim$...$junk$delim$ */ yyless(yyleng-1); } ECHO; } YY_BREAK case 34: YY_RULE_SETUP #line 524 "psqlscan.l" { ECHO; } YY_BREAK case 35: YY_RULE_SETUP #line 527 "psqlscan.l" { ECHO; } YY_BREAK case 36: YY_RULE_SETUP #line 530 "psqlscan.l" { /* This is only needed for $ inside the quoted text */ ECHO; } YY_BREAK case 37: YY_RULE_SETUP #line 535 "psqlscan.l" { BEGIN(xd); ECHO; } YY_BREAK case 38: YY_RULE_SETUP #line 539 "psqlscan.l" { BEGIN(INITIAL); ECHO; } YY_BREAK case 39: YY_RULE_SETUP #line 543 "psqlscan.l" { ECHO; } YY_BREAK case 40: YY_RULE_SETUP #line 546 "psqlscan.l" { ECHO; } YY_BREAK case 41: YY_RULE_SETUP #line 550 "psqlscan.l" { ECHO; } YY_BREAK /* * These rules are specific to psql --- they implement parenthesis * counting and detection of command-ending semicolon. These must * appear before the {self} rule so that they take precedence over it. */ case 42: YY_RULE_SETUP #line 560 "psqlscan.l" { cur_state->paren_depth++; ECHO; } YY_BREAK case 43: YY_RULE_SETUP #line 565 "psqlscan.l" { if (cur_state->paren_depth > 0) cur_state->paren_depth--; ECHO; } YY_BREAK case 44: YY_RULE_SETUP #line 571 "psqlscan.l" { ECHO; if (cur_state->paren_depth == 0) { /* Terminate lexing temporarily */ return LEXRES_SEMI; } } YY_BREAK /* * psql-specific rules to handle backslash commands and variable * substitution. We want these before {self}, also. */ case 45: YY_RULE_SETUP #line 585 "psqlscan.l" { /* Force a semicolon or colon into the query buffer */ emit(yytext + 1, 1); } YY_BREAK case 46: YY_RULE_SETUP #line 590 "psqlscan.l" { /* Terminate lexing temporarily */ return LEXRES_BACKSLASH; } YY_BREAK case 47: YY_RULE_SETUP #line 595 "psqlscan.l" { /* Possible psql variable substitution */ const char *value; value = GetVariable(pset.vars, yytext + 1); if (value) { /* It is a variable, perform substitution */ push_new_buffer(value); /* yy_scan_string already made buffer active */ } else { /* * if the variable doesn't exist we'll copy the * string as is */ ECHO; } } YY_BREAK /* * Back to backend-compatible rules. */ case 48: YY_RULE_SETUP #line 621 "psqlscan.l" { ECHO; } YY_BREAK case 49: YY_RULE_SETUP #line 625 "psqlscan.l" { /* * Check for embedded slash-star or dash-dash; those * are comment starts, so operator must stop there. * Note that slash-star or dash-dash at the first * character will match a prior rule, not this one. */ int nchars = yyleng; char *slashstar = strstr(yytext, "/*"); char *dashdash = strstr(yytext, "--"); if (slashstar && dashdash) { /* if both appear, take the first one */ if (slashstar > dashdash) slashstar = dashdash; } else if (!slashstar) slashstar = dashdash; if (slashstar) nchars = slashstar - yytext; /* * For SQL compatibility, '+' and '-' cannot be the * last char of a multi-char operator unless the operator * contains chars that are not in SQL operators. * The idea is to lex '=-' as two operators, but not * to forbid operator names like '?-' that could not be * sequences of SQL operators. */ while (nchars > 1 && (yytext[nchars-1] == '+' || yytext[nchars-1] == '-')) { int ic; for (ic = nchars-2; ic >= 0; ic--) { if (strchr("~!@#^&|`?%", yytext[ic])) break; } if (ic >= 0) break; /* found a char that makes it OK */ nchars--; /* else remove the +/-, and check again */ } if (nchars < yyleng) { /* Strip the unwanted chars from the token */ yyless(nchars); } ECHO; } YY_BREAK case 50: YY_RULE_SETUP #line 679 "psqlscan.l" { ECHO; } YY_BREAK case 51: YY_RULE_SETUP #line 683 "psqlscan.l" { ECHO; } YY_BREAK case 52: YY_RULE_SETUP #line 686 "psqlscan.l" { ECHO; } YY_BREAK case 53: YY_RULE_SETUP #line 689 "psqlscan.l" { ECHO; } YY_BREAK case 54: YY_RULE_SETUP #line 692 "psqlscan.l" { /* * throw back the [Ee], and treat as {decimal}. Note * that it is possible the input is actually {integer}, * but since this case will almost certainly lead to a * syntax error anyway, we don't bother to distinguish. */ yyless(yyleng-1); ECHO; } YY_BREAK case 55: YY_RULE_SETUP #line 702 "psqlscan.l" { /* throw back the [Ee][+-], and proceed as above */ yyless(yyleng-2); ECHO; } YY_BREAK case 56: YY_RULE_SETUP #line 709 "psqlscan.l" { ECHO; } YY_BREAK case 57: YY_RULE_SETUP #line 713 "psqlscan.l" { ECHO; } YY_BREAK /* * Everything from here down is psql-specific. */ case YY_STATE_EOF(INITIAL): case YY_STATE_EOF(xb): case YY_STATE_EOF(xc): case YY_STATE_EOF(xd): case YY_STATE_EOF(xh): case YY_STATE_EOF(xe): case YY_STATE_EOF(xq): case YY_STATE_EOF(xdolq): case YY_STATE_EOF(xslashcmd): case YY_STATE_EOF(xslasharg): case YY_STATE_EOF(xslashquote): case YY_STATE_EOF(xslashbackquote): case YY_STATE_EOF(xslashdefaultarg): case YY_STATE_EOF(xslashquotedarg): case YY_STATE_EOF(xslashwholeline): case YY_STATE_EOF(xslashend): #line 722 "psqlscan.l" { StackElem *stackelem = cur_state->buffer_stack; if (stackelem == NULL) return LEXRES_EOL; /* end of input reached */ /* * We were expanding a variable, so pop the inclusion * stack and keep lexing */ cur_state->buffer_stack = stackelem->next; yy_delete_buffer(stackelem->buf); free(stackelem->bufstring); if (stackelem->origstring) free(stackelem->origstring); free(stackelem); stackelem = cur_state->buffer_stack; if (stackelem != NULL) { yy_switch_to_buffer(stackelem->buf); cur_state->curline = stackelem->bufstring; cur_state->refline = stackelem->origstring ? stackelem->origstring : stackelem->bufstring; } else { yy_switch_to_buffer(cur_state->scanbufhandle); cur_state->curline = cur_state->scanbuf; cur_state->refline = cur_state->scanline; } } YY_BREAK /* * Exclusive lexer states to handle backslash command lexing */ /* command name ends at whitespace or backslash; eat all else */ case 58: YY_RULE_SETUP #line 761 "psqlscan.l" { yyless(0); return LEXRES_OK; } YY_BREAK case 59: YY_RULE_SETUP #line 766 "psqlscan.l" { ECHO; } YY_BREAK /* eat any whitespace, then decide what to do at first nonblank */ case 60: YY_RULE_SETUP #line 773 "psqlscan.l" { } YY_BREAK case 61: YY_RULE_SETUP #line 775 "psqlscan.l" { /* * backslash is end of command or next command, do not eat * * XXX this means we can't conveniently accept options * that start with a backslash; therefore, option * processing that encourages use of backslashes is rather * broken. */ yyless(0); return LEXRES_OK; } YY_BREAK case 62: YY_RULE_SETUP #line 788 "psqlscan.l" { *option_quote = '\''; BEGIN(xslashquote); } YY_BREAK case 63: YY_RULE_SETUP #line 793 "psqlscan.l" { if (option_type == OT_VERBATIM) { /* in verbatim mode, backquote is not special */ ECHO; BEGIN(xslashdefaultarg); } else { *option_quote = '`'; BEGIN(xslashbackquote); } } YY_BREAK case 64: YY_RULE_SETUP #line 807 "psqlscan.l" { /* Possible psql variable substitution */ if (option_type == OT_VERBATIM) ECHO; else { const char *value; value = GetVariable(pset.vars, yytext + 1); /* * The variable value is just emitted without any * further examination. This is consistent with the * pre-8.0 code behavior, if not with the way that * variables are handled outside backslash commands. */ if (value) appendPQExpBufferStr(output_buf, value); } *option_quote = ':'; return LEXRES_OK; } YY_BREAK case 65: YY_RULE_SETUP #line 832 "psqlscan.l" { ECHO; if (option_type == OT_FILEPIPE) { /* treat like whole-string case */ BEGIN(xslashwholeline); } else { /* treat like default case */ BEGIN(xslashdefaultarg); } } YY_BREAK case 66: YY_RULE_SETUP #line 846 "psqlscan.l" { *option_quote = '"'; ECHO; BEGIN(xslashquotedarg); } YY_BREAK case 67: YY_RULE_SETUP #line 852 "psqlscan.l" { ECHO; BEGIN(xslashdefaultarg); } YY_BREAK /* * single-quoted text: copy literally except for '' and backslash * sequences */ case 68: YY_RULE_SETUP #line 865 "psqlscan.l" { return LEXRES_OK; } YY_BREAK case 69: YY_RULE_SETUP #line 867 "psqlscan.l" { appendPQExpBufferChar(output_buf, '\''); } YY_BREAK case 70: YY_RULE_SETUP #line 869 "psqlscan.l" { appendPQExpBufferChar(output_buf, '\n'); } YY_BREAK case 71: YY_RULE_SETUP #line 870 "psqlscan.l" { appendPQExpBufferChar(output_buf, '\t'); } YY_BREAK case 72: YY_RULE_SETUP #line 871 "psqlscan.l" { appendPQExpBufferChar(output_buf, '\b'); } YY_BREAK case 73: YY_RULE_SETUP #line 872 "psqlscan.l" { appendPQExpBufferChar(output_buf, '\r'); } YY_BREAK case 74: YY_RULE_SETUP #line 873 "psqlscan.l" { appendPQExpBufferChar(output_buf, '\f'); } YY_BREAK case 75: YY_RULE_SETUP #line 875 "psqlscan.l" { /* octal case */ appendPQExpBufferChar(output_buf, (char) strtol(yytext + 1, NULL, 8)); } YY_BREAK case 76: YY_RULE_SETUP #line 881 "psqlscan.l" { /* hex case */ appendPQExpBufferChar(output_buf, (char) strtol(yytext + 2, NULL, 16)); } YY_BREAK case 77: YY_RULE_SETUP #line 887 "psqlscan.l" { emit(yytext + 1, 1); } YY_BREAK case 78: YY_RULE_SETUP #line 889 "psqlscan.l" { ECHO; } YY_BREAK /* * backticked text: copy everything until next backquote or end of line. * Invocation of the command will happen in psql_scan_slash_option. */ case 79: YY_RULE_SETUP #line 899 "psqlscan.l" { return LEXRES_OK; } YY_BREAK case 80: YY_RULE_SETUP #line 901 "psqlscan.l" { ECHO; } YY_BREAK /* * Copy everything until unquoted whitespace or end of line. Quotes * do not get stripped yet. */ case 81: YY_RULE_SETUP #line 911 "psqlscan.l" { yyless(0); return LEXRES_OK; } YY_BREAK case 82: YY_RULE_SETUP #line 916 "psqlscan.l" { /* * unquoted backslash is end of command or next command, * do not eat * * (this was not the behavior pre-8.0, but it seems * consistent) */ yyless(0); return LEXRES_OK; } YY_BREAK case 83: YY_RULE_SETUP #line 928 "psqlscan.l" { *option_quote = '"'; ECHO; BEGIN(xslashquotedarg); } YY_BREAK case 84: YY_RULE_SETUP #line 934 "psqlscan.l" { ECHO; } YY_BREAK /* double-quoted text within a default-type argument: copy */ case 85: YY_RULE_SETUP #line 941 "psqlscan.l" { ECHO; BEGIN(xslashdefaultarg); } YY_BREAK case 86: YY_RULE_SETUP #line 946 "psqlscan.l" { ECHO; } YY_BREAK /* copy everything until end of input line */ /* but suppress leading whitespace */ case 87: YY_RULE_SETUP #line 954 "psqlscan.l" { if (output_buf->len > 0) ECHO; } YY_BREAK case 88: YY_RULE_SETUP #line 959 "psqlscan.l" { ECHO; } YY_BREAK /* at end of command, eat a double backslash, but not anything else */ case 89: YY_RULE_SETUP #line 966 "psqlscan.l" { return LEXRES_OK; } YY_BREAK case 90: YY_RULE_SETUP #line 968 "psqlscan.l" { yyless(0); return LEXRES_OK; } YY_BREAK case 91: YY_RULE_SETUP #line 975 "psqlscan.l" YY_FATAL_ERROR( "flex scanner jammed" ); YY_BREAK #line 3408 "psqlscan.c" case YY_END_OF_BUFFER: { /* Amount of text matched not including the EOB char. */ int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1; /* Undo the effects of YY_DO_BEFORE_ACTION. */ *yy_cp = yy_hold_char; YY_RESTORE_YY_MORE_OFFSET if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW ) { /* We're scanning a new file or input source. It's * possible that this happened because the user * just pointed yyin at a new source and called * yylex(). If so, then we have to assure * consistency between yy_current_buffer and our * globals. Here is the right place to do so, because * this is the first action (other than possibly a * back-up) that will match for the new input source. */ yy_n_chars = yy_current_buffer->yy_n_chars; yy_current_buffer->yy_input_file = yyin; yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL; } /* Note that here we test for yy_c_buf_p "<=" to the position * of the first EOB in the buffer, since yy_c_buf_p will * already have been incremented past the NUL character * (since all states make transitions on EOB to the * end-of-buffer state). Contrast this with the test * in input(). */ if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] ) { /* This was really a NUL. */ yy_state_type yy_next_state; yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state(); /* Okay, we're now positioned to make the NUL * transition. We couldn't have * yy_get_previous_state() go ahead and do it * for us because it doesn't know how to deal * with the possibility of jamming (and we don't * want to build jamming into it because then it * will run more slowly). */ yy_next_state = yy_try_NUL_trans( yy_current_state ); yy_bp = yytext_ptr + YY_MORE_ADJ; if ( yy_next_state ) { /* Consume the NUL. */ yy_cp = ++yy_c_buf_p; yy_current_state = yy_next_state; goto yy_match; } else { yy_cp = yy_c_buf_p; goto yy_find_action; } } else switch ( yy_get_next_buffer() ) { case EOB_ACT_END_OF_FILE: { yy_did_buffer_switch_on_eof = 0; if ( yywrap() ) { /* Note: because we've taken care in * yy_get_next_buffer() to have set up * yytext, we can now set up * yy_c_buf_p so that if some total * hoser (like flex itself) wants to * call the scanner after we return the * YY_NULL, it'll still work - another * YY_NULL will get returned. */ yy_c_buf_p = yytext_ptr + YY_MORE_ADJ; yy_act = YY_STATE_EOF(YY_START); goto do_action; } else { if ( ! yy_did_buffer_switch_on_eof ) YY_NEW_FILE; } break; } case EOB_ACT_CONTINUE_SCAN: yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state(); yy_cp = yy_c_buf_p; yy_bp = yytext_ptr + YY_MORE_ADJ; goto yy_match; case EOB_ACT_LAST_MATCH: yy_c_buf_p = &yy_current_buffer->yy_ch_buf[yy_n_chars]; yy_current_state = yy_get_previous_state(); yy_cp = yy_c_buf_p; yy_bp = yytext_ptr + YY_MORE_ADJ; goto yy_find_action; } break; } default: YY_FATAL_ERROR( "fatal flex scanner internal error--no action found" ); } /* end of action switch */ } /* end of scanning one token */ } /* end of yylex */ /* yy_get_next_buffer - try to read in a new buffer * * Returns a code representing an action: * EOB_ACT_LAST_MATCH - * EOB_ACT_CONTINUE_SCAN - continue scanning from current position * EOB_ACT_END_OF_FILE - end of file */ static int yy_get_next_buffer() { register char *dest = yy_current_buffer->yy_ch_buf; register char *source = yytext_ptr; register int number_to_move, i; int ret_val; if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] ) YY_FATAL_ERROR( "fatal flex scanner internal error--end of buffer missed" ); if ( yy_current_buffer->yy_fill_buffer == 0 ) { /* Don't try to fill the buffer, so this is an EOF. */ if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 ) { /* We matched a single character, the EOB, so * treat this as a final EOF. */ return EOB_ACT_END_OF_FILE; } else { /* We matched some text prior to the EOB, first * process it. */ return EOB_ACT_LAST_MATCH; } } /* Try to read more data. */ /* First move last chars to start of buffer. */ number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1; for ( i = 0; i < number_to_move; ++i ) *(dest++) = *(source++); if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING ) /* don't do the read, it's not guaranteed to return an EOF, * just force an EOF */ yy_current_buffer->yy_n_chars = yy_n_chars = 0; else { int num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1; while ( num_to_read <= 0 ) { /* Not enough room in the buffer - grow it. */ #ifdef YY_USES_REJECT YY_FATAL_ERROR( "input buffer overflow, can't enlarge buffer because scanner uses REJECT" ); #else /* just a shorter name for the current buffer */ YY_BUFFER_STATE b = yy_current_buffer; int yy_c_buf_p_offset = (int) (yy_c_buf_p - b->yy_ch_buf); if ( b->yy_is_our_buffer ) { int new_size = b->yy_buf_size * 2; if ( new_size <= 0 ) b->yy_buf_size += b->yy_buf_size / 8; else b->yy_buf_size *= 2; b->yy_ch_buf = (char *) /* Include room in for 2 EOB chars. */ yy_flex_realloc( (void *) b->yy_ch_buf, b->yy_buf_size + 2 ); } else /* Can't grow it, we don't own it. */ b->yy_ch_buf = 0; if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" ); yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset]; num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1; #endif } if ( num_to_read > YY_READ_BUF_SIZE ) num_to_read = YY_READ_BUF_SIZE; /* Read in more data. */ YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]), yy_n_chars, num_to_read ); yy_current_buffer->yy_n_chars = yy_n_chars; } if ( yy_n_chars == 0 ) { if ( number_to_move == YY_MORE_ADJ ) { ret_val = EOB_ACT_END_OF_FILE; yyrestart( yyin ); } else { ret_val = EOB_ACT_LAST_MATCH; yy_current_buffer->yy_buffer_status = YY_BUFFER_EOF_PENDING; } } else ret_val = EOB_ACT_CONTINUE_SCAN; yy_n_chars += number_to_move; yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR; yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR; yytext_ptr = &yy_current_buffer->yy_ch_buf[0]; return ret_val; } /* yy_get_previous_state - get the state just before the EOB char was reached */ static yy_state_type yy_get_previous_state() { register yy_state_type yy_current_state; register char *yy_cp; yy_current_state = yy_start; for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp ) { yy_current_state = yy_nxt[yy_current_state][(*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1)]; } return yy_current_state; } /* yy_try_NUL_trans - try to make a transition on the NUL character * * synopsis * next_state = yy_try_NUL_trans( current_state ); */ #ifdef YY_USE_PROTOS static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state ) #else static yy_state_type yy_try_NUL_trans( yy_current_state ) yy_state_type yy_current_state; #endif { register int yy_is_jam; yy_current_state = yy_nxt[yy_current_state][1]; yy_is_jam = (yy_current_state <= 0); return yy_is_jam ? 0 : yy_current_state; } #ifndef YY_NO_UNPUT #ifdef YY_USE_PROTOS static void yyunput( int c, register char *yy_bp ) #else static void yyunput( c, yy_bp ) int c; register char *yy_bp; #endif { register char *yy_cp = yy_c_buf_p; /* undo effects of setting up yytext */ *yy_cp = yy_hold_char; if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 ) { /* need to shift things up to make room */ /* +2 for EOB chars. */ register int number_to_move = yy_n_chars + 2; register char *dest = &yy_current_buffer->yy_ch_buf[ yy_current_buffer->yy_buf_size + 2]; register char *source = &yy_current_buffer->yy_ch_buf[number_to_move]; while ( source > yy_current_buffer->yy_ch_buf ) *--dest = *--source; yy_cp += (int) (dest - source); yy_bp += (int) (dest - source); yy_current_buffer->yy_n_chars = yy_n_chars = yy_current_buffer->yy_buf_size; if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 ) YY_FATAL_ERROR( "flex scanner push-back overflow" ); } *--yy_cp = (char) c; yytext_ptr = yy_bp; yy_hold_char = *yy_cp; yy_c_buf_p = yy_cp; } #endif /* ifndef YY_NO_UNPUT */ #ifdef __cplusplus static int yyinput() #else static int input() #endif { int c; *yy_c_buf_p = yy_hold_char; if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR ) { /* yy_c_buf_p now points to the character we want to return. * If this occurs *before* the EOB characters, then it's a * valid NUL; if not, then we've hit the end of the buffer. */ if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] ) /* This was really a NUL. */ *yy_c_buf_p = '\0'; else { /* need more input */ int offset = yy_c_buf_p - yytext_ptr; ++yy_c_buf_p; switch ( yy_get_next_buffer() ) { case EOB_ACT_LAST_MATCH: /* This happens because yy_g_n_b() * sees that we've accumulated a * token and flags that we need to * try matching the token before * proceeding. But for input(), * there's no matching to consider. * So convert the EOB_ACT_LAST_MATCH * to EOB_ACT_END_OF_FILE. */ /* Reset buffer status. */ yyrestart( yyin ); /* fall through */ case EOB_ACT_END_OF_FILE: { if ( yywrap() ) return EOF; if ( ! yy_did_buffer_switch_on_eof ) YY_NEW_FILE; #ifdef __cplusplus return yyinput(); #else return input(); #endif } case EOB_ACT_CONTINUE_SCAN: yy_c_buf_p = yytext_ptr + offset; break; } } } c = *(unsigned char *) yy_c_buf_p; /* cast for 8-bit char's */ *yy_c_buf_p = '\0'; /* preserve yytext */ yy_hold_char = *++yy_c_buf_p; return c; } #ifdef YY_USE_PROTOS void yyrestart( FILE *input_file ) #else void yyrestart( input_file ) FILE *input_file; #endif { if ( ! yy_current_buffer ) yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); yy_init_buffer( yy_current_buffer, input_file ); yy_load_buffer_state(); } #ifdef YY_USE_PROTOS void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer ) #else void yy_switch_to_buffer( new_buffer ) YY_BUFFER_STATE new_buffer; #endif { if ( yy_current_buffer == new_buffer ) return; if ( yy_current_buffer ) { /* Flush out information for old buffer. */ *yy_c_buf_p = yy_hold_char; yy_current_buffer->yy_buf_pos = yy_c_buf_p; yy_current_buffer->yy_n_chars = yy_n_chars; } yy_current_buffer = new_buffer; yy_load_buffer_state(); /* We don't actually know whether we did this switch during * EOF (yywrap()) processing, but the only time this flag * is looked at is after yywrap() is called, so it's safe * to go ahead and always set it. */ yy_did_buffer_switch_on_eof = 1; } #ifdef YY_USE_PROTOS void yy_load_buffer_state( void ) #else void yy_load_buffer_state() #endif { yy_n_chars = yy_current_buffer->yy_n_chars; yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos; yyin = yy_current_buffer->yy_input_file; yy_hold_char = *yy_c_buf_p; } #ifdef YY_USE_PROTOS YY_BUFFER_STATE yy_create_buffer( FILE *file, int size ) #else YY_BUFFER_STATE yy_create_buffer( file, size ) FILE *file; int size; #endif { YY_BUFFER_STATE b; b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_buf_size = size; /* yy_ch_buf has to be 2 characters longer than the size given because * we need to put in 2 end-of-buffer characters. */ b->yy_ch_buf = (char *) yy_flex_alloc( b->yy_buf_size + 2 ); if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_is_our_buffer = 1; yy_init_buffer( b, file ); return b; } #ifdef YY_USE_PROTOS void yy_delete_buffer( YY_BUFFER_STATE b ) #else void yy_delete_buffer( b ) YY_BUFFER_STATE b; #endif { if ( ! b ) return; if ( b == yy_current_buffer ) yy_current_buffer = (YY_BUFFER_STATE) 0; if ( b->yy_is_our_buffer ) yy_flex_free( (void *) b->yy_ch_buf ); yy_flex_free( (void *) b ); } #ifndef YY_ALWAYS_INTERACTIVE #ifndef YY_NEVER_INTERACTIVE extern int isatty YY_PROTO(( int )); #endif #endif #ifdef YY_USE_PROTOS void yy_init_buffer( YY_BUFFER_STATE b, FILE *file ) #else void yy_init_buffer( b, file ) YY_BUFFER_STATE b; FILE *file; #endif { yy_flush_buffer( b ); b->yy_input_file = file; b->yy_fill_buffer = 1; #if YY_ALWAYS_INTERACTIVE b->yy_is_interactive = 1; #else #if YY_NEVER_INTERACTIVE b->yy_is_interactive = 0; #else b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0; #endif #endif } #ifdef YY_USE_PROTOS void yy_flush_buffer( YY_BUFFER_STATE b ) #else void yy_flush_buffer( b ) YY_BUFFER_STATE b; #endif { if ( ! b ) return; b->yy_n_chars = 0; /* We always need two end-of-buffer characters. The first causes * a transition to the end-of-buffer state. The second causes * a jam in that state. */ b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; b->yy_buf_pos = &b->yy_ch_buf[0]; b->yy_at_bol = 1; b->yy_buffer_status = YY_BUFFER_NEW; if ( b == yy_current_buffer ) yy_load_buffer_state(); } #ifndef YY_NO_SCAN_BUFFER #ifdef YY_USE_PROTOS YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size ) #else YY_BUFFER_STATE yy_scan_buffer( base, size ) char *base; yy_size_t size; #endif { YY_BUFFER_STATE b; if ( size < 2 || base[size-2] != YY_END_OF_BUFFER_CHAR || base[size-1] != YY_END_OF_BUFFER_CHAR ) /* They forgot to leave room for the EOB's. */ return 0; b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */ b->yy_buf_pos = b->yy_ch_buf = base; b->yy_is_our_buffer = 0; b->yy_input_file = 0; b->yy_n_chars = b->yy_buf_size; b->yy_is_interactive = 0; b->yy_at_bol = 1; b->yy_fill_buffer = 0; b->yy_buffer_status = YY_BUFFER_NEW; yy_switch_to_buffer( b ); return b; } #endif #ifndef YY_NO_SCAN_STRING #ifdef YY_USE_PROTOS YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str ) #else YY_BUFFER_STATE yy_scan_string( yy_str ) yyconst char *yy_str; #endif { int len; for ( len = 0; yy_str[len]; ++len ) ; return yy_scan_bytes( yy_str, len ); } #endif #ifndef YY_NO_SCAN_BYTES #ifdef YY_USE_PROTOS YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len ) #else YY_BUFFER_STATE yy_scan_bytes( bytes, len ) yyconst char *bytes; int len; #endif { YY_BUFFER_STATE b; char *buf; yy_size_t n; int i; /* Get memory for full buffer, including space for trailing EOB's. */ n = len + 2; buf = (char *) yy_flex_alloc( n ); if ( ! buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); for ( i = 0; i < len; ++i ) buf[i] = bytes[i]; buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR; b = yy_scan_buffer( buf, n ); if ( ! b ) YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); /* It's okay to grow etc. this buffer, and we should throw it * away when we're done. */ b->yy_is_our_buffer = 1; return b; } #endif #ifndef YY_NO_PUSH_STATE #ifdef YY_USE_PROTOS static void yy_push_state( int new_state ) #else static void yy_push_state( new_state ) int new_state; #endif { if ( yy_start_stack_ptr >= yy_start_stack_depth ) { yy_size_t new_size; yy_start_stack_depth += YY_START_STACK_INCR; new_size = yy_start_stack_depth * sizeof( int ); if ( ! yy_start_stack ) yy_start_stack = (int *) yy_flex_alloc( new_size ); else yy_start_stack = (int *) yy_flex_realloc( (void *) yy_start_stack, new_size ); if ( ! yy_start_stack ) YY_FATAL_ERROR( "out of memory expanding start-condition stack" ); } yy_start_stack[yy_start_stack_ptr++] = YY_START; BEGIN(new_state); } #endif #ifndef YY_NO_POP_STATE static void yy_pop_state() { if ( --yy_start_stack_ptr < 0 ) YY_FATAL_ERROR( "start-condition stack underflow" ); BEGIN(yy_start_stack[yy_start_stack_ptr]); } #endif #ifndef YY_NO_TOP_STATE static int yy_top_state() { return yy_start_stack[yy_start_stack_ptr - 1]; } #endif #ifndef YY_EXIT_FAILURE #define YY_EXIT_FAILURE 2 #endif #ifdef YY_USE_PROTOS static void yy_fatal_error( yyconst char msg[] ) #else static void yy_fatal_error( msg ) char msg[]; #endif { (void) fprintf( stderr, "%s\n", msg ); exit( YY_EXIT_FAILURE ); } /* Redefine yyless() so it works in section 3 code. */ #undef yyless #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ yytext[yyleng] = yy_hold_char; \ yy_c_buf_p = yytext + n; \ yy_hold_char = *yy_c_buf_p; \ *yy_c_buf_p = '\0'; \ yyleng = n; \ } \ while ( 0 ) /* Internal utility routines. */ #ifndef yytext_ptr #ifdef YY_USE_PROTOS static void yy_flex_strncpy( char *s1, yyconst char *s2, int n ) #else static void yy_flex_strncpy( s1, s2, n ) char *s1; yyconst char *s2; int n; #endif { register int i; for ( i = 0; i < n; ++i ) s1[i] = s2[i]; } #endif #ifdef YY_NEED_STRLEN #ifdef YY_USE_PROTOS static int yy_flex_strlen( yyconst char *s ) #else static int yy_flex_strlen( s ) yyconst char *s; #endif { register int n; for ( n = 0; s[n]; ++n ) ; return n; } #endif #ifdef YY_USE_PROTOS static void *yy_flex_alloc( yy_size_t size ) #else static void *yy_flex_alloc( size ) yy_size_t size; #endif { return (void *) malloc( size ); } #ifdef YY_USE_PROTOS static void *yy_flex_realloc( void *ptr, yy_size_t size ) #else static void *yy_flex_realloc( ptr, size ) void *ptr; yy_size_t size; #endif { /* The cast to (char *) in the following accommodates both * implementations that use char* generic pointers, and those * that use void* generic pointers. It works with the latter * because both ANSI C and C++ allow castless assignment from * any pointer type to void*, and deal with argument conversions * as though doing an assignment. */ return (void *) realloc( (char *) ptr, size ); } #ifdef YY_USE_PROTOS static void yy_flex_free( void *ptr ) #else static void yy_flex_free( ptr ) void *ptr; #endif { free( ptr ); } #if YY_MAIN int main() { yylex(); return 0; } #endif #line 975 "psqlscan.l" /* * Create a lexer working state struct. */ PsqlScanState psql_scan_create(void) { PsqlScanState state; state = (PsqlScanStateData *) pg_malloc_zero(sizeof(PsqlScanStateData)); psql_scan_reset(state); return state; } /* * Destroy a lexer working state struct, releasing all resources. */ void psql_scan_destroy(PsqlScanState state) { psql_scan_finish(state); psql_scan_reset(state); free(state); } /* * Set up to perform lexing of the given input line. * * The text at *line, extending for line_len bytes, will be scanned by * subsequent calls to the psql_scan routines. psql_scan_finish should * be called when scanning is complete. Note that the lexer retains * a pointer to the storage at *line --- this string must not be altered * or freed until after psql_scan_finish is called. */ void psql_scan_setup(PsqlScanState state, const char *line, int line_len) { /* Mustn't be scanning already */ psql_assert(state->scanbufhandle == NULL); psql_assert(state->buffer_stack == NULL); /* Do we need to hack the character set encoding? */ state->encoding = pset.encoding; state->safe_encoding = PG_VALID_BE_ENCODING(state->encoding); /* needed for prepare_buffer */ cur_state = state; /* Set up flex input buffer with appropriate translation and padding */ state->scanbufhandle = prepare_buffer(line, line_len, &state->scanbuf); state->scanline = line; /* Set lookaside data in case we have to map unsafe encoding */ state->curline = state->scanbuf; state->refline = state->scanline; } /* * Do lexical analysis of SQL command text. * * The text previously passed to psql_scan_setup is scanned, and appended * (possibly with transformation) to query_buf. * * The return value indicates the condition that stopped scanning: * * PSCAN_SEMICOLON: found a command-ending semicolon. (The semicolon is * transferred to query_buf.) The command accumulated in query_buf should * be executed, then clear query_buf and call again to scan the remainder * of the line. * * PSCAN_BACKSLASH: found a backslash that starts a psql special command. * Any previous data on the line has been transferred to query_buf. * The caller will typically next call psql_scan_slash_command(), * perhaps psql_scan_slash_option(), and psql_scan_slash_command_end(). * * PSCAN_INCOMPLETE: the end of the line was reached, but we have an * incomplete SQL command. *prompt is set to the appropriate prompt type. * * PSCAN_EOL: the end of the line was reached, and there is no lexical * reason to consider the command incomplete. The caller may or may not * choose to send it. *prompt is set to the appropriate prompt type if * the caller chooses to collect more input. * * In the PSCAN_INCOMPLETE and PSCAN_EOL cases, psql_scan_finish() should * be called next, then the cycle may be repeated with a fresh input line. * * In all cases, *prompt is set to an appropriate prompt type code for the * next line-input operation. */ PsqlScanResult psql_scan(PsqlScanState state, PQExpBuffer query_buf, promptStatus_t *prompt) { PsqlScanResult result; int lexresult; /* Must be scanning already */ psql_assert(state->scanbufhandle); /* Set up static variables that will be used by yylex */ cur_state = state; output_buf = query_buf; if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf); else yy_switch_to_buffer(state->scanbufhandle); BEGIN(state->start_state); /* And lex. */ lexresult = yylex(); /* Update static vars back to the state struct */ state->start_state = YY_START; /* * Check termination state and return appropriate result info. */ switch (lexresult) { case LEXRES_EOL: /* end of input */ switch (state->start_state) { case INITIAL: if (state->paren_depth > 0) { result = PSCAN_INCOMPLETE; *prompt = PROMPT_PAREN; } else if (query_buf->len > 0) { result = PSCAN_EOL; *prompt = PROMPT_CONTINUE; } else { /* never bother to send an empty buffer */ result = PSCAN_INCOMPLETE; *prompt = PROMPT_READY; } break; case xb: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xc: result = PSCAN_INCOMPLETE; *prompt = PROMPT_COMMENT; break; case xd: result = PSCAN_INCOMPLETE; *prompt = PROMPT_DOUBLEQUOTE; break; case xh: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xq: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xe: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xdolq: result = PSCAN_INCOMPLETE; *prompt = PROMPT_DOLLARQUOTE; break; default: /* can't get here */ fprintf(stderr, "invalid YY_START\n"); exit(1); } break; case LEXRES_SEMI: /* semicolon */ result = PSCAN_SEMICOLON; *prompt = PROMPT_READY; break; case LEXRES_BACKSLASH: /* backslash */ result = PSCAN_BACKSLASH; *prompt = PROMPT_READY; break; default: /* can't get here */ fprintf(stderr, "invalid yylex result\n"); exit(1); } return result; } /* * Clean up after scanning a string. This flushes any unread input and * releases resources (but not the PsqlScanState itself). Note however * that this does not reset the lexer scan state; that can be done by * psql_scan_reset(), which is an orthogonal operation. * * It is legal to call this when not scanning anything (makes it easier * to deal with error recovery). */ void psql_scan_finish(PsqlScanState state) { /* Drop any incomplete variable expansions. */ while (state->buffer_stack != NULL) { StackElem *stackelem = state->buffer_stack; state->buffer_stack = stackelem->next; yy_delete_buffer(stackelem->buf); free(stackelem->bufstring); if (stackelem->origstring) free(stackelem->origstring); free(stackelem); } /* Done with the outer scan buffer, too */ if (state->scanbufhandle) yy_delete_buffer(state->scanbufhandle); state->scanbufhandle = NULL; if (state->scanbuf) free(state->scanbuf); state->scanbuf = NULL; } /* * Reset lexer scanning state to start conditions. This is appropriate * for executing \r psql commands (or any other time that we discard the * prior contents of query_buf). It is not, however, necessary to do this * when we execute and clear the buffer after getting a PSCAN_SEMICOLON or * PSCAN_EOL scan result, because the scan state must be INITIAL when those * conditions are returned. * * Note that this is unrelated to flushing unread input; that task is * done by psql_scan_finish(). */ void psql_scan_reset(PsqlScanState state) { state->start_state = INITIAL; state->paren_depth = 0; state->xcdepth = 0; /* not really necessary */ if (state->dolqstart) free(state->dolqstart); state->dolqstart = NULL; } /* * Return true if lexer is currently in an "inside quotes" state. * * This is pretty grotty but is needed to preserve the old behavior * that mainloop.c drops blank lines not inside quotes without even * echoing them. */ bool psql_scan_in_quote(PsqlScanState state) { return state->start_state != INITIAL; } /* * Scan the command name of a psql backslash command. This should be called * after psql_scan() returns PSCAN_BACKSLASH. It is assumed that the input * has been consumed through the leading backslash. * * The return value is a malloc'd copy of the command name, as parsed off * from the input. */ char * psql_scan_slash_command(PsqlScanState state) { PQExpBufferData mybuf; int lexresult; /* Must be scanning already */ psql_assert(state->scanbufhandle); /* Build a local buffer that we'll return the data of */ initPQExpBuffer(&mybuf); /* Set up static variables that will be used by yylex */ cur_state = state; output_buf = &mybuf; if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf); else yy_switch_to_buffer(state->scanbufhandle); BEGIN(xslashcmd); /* And lex. */ lexresult = yylex(); /* There are no possible errors in this lex state... */ return mybuf.data; } /* * Parse off the next argument for a backslash command, and return it as a * malloc'd string. If there are no more arguments, returns NULL. * * type tells what processing, if any, to perform on the option string; * for example, if it's a SQL identifier, we want to downcase any unquoted * letters. * * if quote is not NULL, *quote is set to 0 if no quoting was found, else * the quote symbol. * * if semicolon is true, unquoted trailing semicolon(s) that would otherwise * be taken as part of the option string will be stripped. * * NOTE: the only possible syntax errors for backslash options are unmatched * quotes, which are detected when we run out of input. Therefore, on a * syntax error we just throw away the string and return NULL; there is no * need to worry about flushing remaining input. */ char * psql_scan_slash_option(PsqlScanState state, enum slash_option_type type, char *quote, bool semicolon) { PQExpBufferData mybuf; int lexresult; char local_quote; bool badarg; /* Must be scanning already */ psql_assert(state->scanbufhandle); if (quote == NULL) quote = &local_quote; *quote = 0; /* Build a local buffer that we'll return the data of */ initPQExpBuffer(&mybuf); /* Set up static variables that will be used by yylex */ cur_state = state; output_buf = &mybuf; option_type = type; option_quote = quote; if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf); else yy_switch_to_buffer(state->scanbufhandle); if (type == OT_WHOLE_LINE) BEGIN(xslashwholeline); else BEGIN(xslasharg); /* And lex. */ lexresult = yylex(); /* * Check the lex result: we should have gotten back either LEXRES_OK * or LEXRES_EOL (the latter indicating end of string). If we were inside * a quoted string, as indicated by YY_START, EOL is an error. */ psql_assert(lexresult == LEXRES_EOL || lexresult == LEXRES_OK); badarg = false; switch (YY_START) { case xslasharg: /* empty arg, or possibly a psql variable substitution */ break; case xslashquote: if (lexresult != LEXRES_OK) badarg = true; /* hit EOL not ending quote */ break; case xslashbackquote: if (lexresult != LEXRES_OK) badarg = true; /* hit EOL not ending quote */ else { /* Perform evaluation of backticked command */ char *cmd = mybuf.data; FILE *fd; bool error = false; PQExpBufferData output; char buf[512]; size_t result; fd = popen(cmd, PG_BINARY_R); if (!fd) { psql_error("%s: %s\n", cmd, strerror(errno)); error = true; } initPQExpBuffer(&output); if (!error) { do { result = fread(buf, 1, sizeof(buf), fd); if (ferror(fd)) { psql_error("%s: %s\n", cmd, strerror(errno)); error = true; break; } appendBinaryPQExpBuffer(&output, buf, result); } while (!feof(fd)); } if (fd && pclose(fd) == -1) { psql_error("%s: %s\n", cmd, strerror(errno)); error = true; } /* Now done with cmd, transfer result to mybuf */ resetPQExpBuffer(&mybuf); if (!error) { /* strip any trailing newline */ if (output.len > 0 && output.data[output.len - 1] == '\n') output.len--; appendBinaryPQExpBuffer(&mybuf, output.data, output.len); } termPQExpBuffer(&output); } break; case xslashdefaultarg: /* Strip any trailing semi-colons if requested */ if (semicolon) { while (mybuf.len > 0 && mybuf.data[mybuf.len - 1] == ';') { mybuf.data[--mybuf.len] = '\0'; } } /* * If SQL identifier processing was requested, then we strip out * excess double quotes and downcase unquoted letters. * Doubled double-quotes become output double-quotes, per spec. * * Note that a string like FOO"BAR"BAZ will be converted to * fooBARbaz; this is somewhat inconsistent with the SQL spec, * which would have us parse it as several identifiers. But * for psql's purposes, we want a string like "foo"."bar" to * be treated as one option, so there's little choice. */ if (type == OT_SQLID || type == OT_SQLIDHACK) { bool inquotes = false; char *cp = mybuf.data; while (*cp) { if (*cp == '"') { if (inquotes && cp[1] == '"') { /* Keep the first quote, remove the second */ cp++; } inquotes = !inquotes; /* Collapse out quote at *cp */ memmove(cp, cp + 1, strlen(cp)); mybuf.len--; /* do not advance cp */ } else { if (!inquotes && type == OT_SQLID) *cp = pg_tolower((unsigned char) *cp); cp += PQmblen(cp, pset.encoding); } } } break; case xslashquotedarg: /* must have hit EOL inside double quotes */ badarg = true; break; case xslashwholeline: /* always okay */ break; default: /* can't get here */ fprintf(stderr, "invalid YY_START\n"); exit(1); } if (badarg) { psql_error("unterminated quoted string\n"); termPQExpBuffer(&mybuf); return NULL; } /* * An unquoted empty argument isn't possible unless we are at end of * command. Return NULL instead. */ if (mybuf.len == 0 && *quote == 0) { termPQExpBuffer(&mybuf); return NULL; } /* Else return the completed string. */ return mybuf.data; } /* * Eat up any unused \\ to complete a backslash command. */ void psql_scan_slash_command_end(PsqlScanState state) { int lexresult; /* Must be scanning already */ psql_assert(state->scanbufhandle); /* Set up static variables that will be used by yylex */ cur_state = state; output_buf = NULL; if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf); else yy_switch_to_buffer(state->scanbufhandle); BEGIN(xslashend); /* And lex. */ lexresult = yylex(); /* There are no possible errors in this lex state... */ } /* * "Push back" the passed string so that it will be rescanned by subsequent * psql_scan_slash_option calls. This is presently only used in the case * where a single-letter command has been concatenated with its argument. * * We use the same buffer stack mechanism as for variable expansion. */ void psql_scan_slash_pushback(PsqlScanState state, const char *str) { /* needed for push_new_buffer */ cur_state = state; push_new_buffer(str); } /* * Push the given string onto the stack of stuff to scan. * * cur_state must point to the active PsqlScanState. * * NOTE SIDE EFFECT: the new buffer is made the active flex input buffer. */ static void push_new_buffer(const char *newstr) { StackElem *stackelem; stackelem = (StackElem *) pg_malloc(sizeof(StackElem)); stackelem->buf = prepare_buffer(newstr, strlen(newstr), &stackelem->bufstring); cur_state->curline = stackelem->bufstring; if (cur_state->safe_encoding) { stackelem->origstring = NULL; cur_state->refline = stackelem->bufstring; } else { stackelem->origstring = pg_strdup(newstr); cur_state->refline = stackelem->origstring; } stackelem->next = cur_state->buffer_stack; cur_state->buffer_stack = stackelem; } /* * Set up a flex input buffer to scan the given data. We always make a * copy of the data. If working in an unsafe encoding, the copy has * multibyte sequences replaced by FFs to avoid fooling the lexer rules. * * cur_state must point to the active PsqlScanState. * * NOTE SIDE EFFECT: the new buffer is made the active flex input buffer. */ static YY_BUFFER_STATE prepare_buffer(const char *txt, int len, char **txtcopy) { char *newtxt; /* Flex wants two \0 characters after the actual data */ newtxt = pg_malloc(len + 2); *txtcopy = newtxt; newtxt[len] = newtxt[len + 1] = YY_END_OF_BUFFER_CHAR; if (cur_state->safe_encoding) memcpy(newtxt, txt, len); else { /* Gotta do it the hard way */ int i = 0; while (i < len) { int thislen = PQmblen(txt + i, cur_state->encoding); /* first byte should always be okay... */ newtxt[i] = txt[i]; i++; while (--thislen > 0) newtxt[i++] = (char) 0xFF; } } return yy_scan_buffer(newtxt, len + 2); } /* * emit() --- body for ECHO macro * * NB: this must be used for ALL and ONLY the text copied from the flex * input data. If you pass it something that is not part of the yytext * string, you are making a mistake. Internally generated text can be * appended directly to output_buf. */ static void emit(const char *txt, int len) { if (cur_state->safe_encoding) appendBinaryPQExpBuffer(output_buf, txt, len); else { /* Gotta do it the hard way */ const char *reference = cur_state->refline; int i; reference += (txt - cur_state->curline); for (i = 0; i < len; i++) { char ch = txt[i]; if (ch == (char) 0xFF) ch = reference[i]; appendPQExpBufferChar(output_buf, ch); } } }