#line 1 "psqlscanslash.c" /*------------------------------------------------------------------------- * * psqlscanslash.l * lexical scanner for psql backslash commands * * XXX Avoid creating backtracking cases --- see the backend lexer for info. * * See fe_utils/psqlscan_int.h for additional commentary. * * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION * src/bin/psql/psqlscanslash.l * *------------------------------------------------------------------------- */ #include "postgres_fe.h" #include "psqlscanslash.h" #include "common/logging.h" #include "fe_utils/conditional.h" #include "libpq-fe.h" #line 27 "psqlscanslash.c" #define YY_INT_ALIGNED short int /* A lexical scanner generated by flex */ #define FLEX_SCANNER #define YY_FLEX_MAJOR_VERSION 2 #define YY_FLEX_MINOR_VERSION 6 #define YY_FLEX_SUBMINOR_VERSION 4 #if YY_FLEX_SUBMINOR_VERSION > 0 #define FLEX_BETA #endif #ifdef yy_create_buffer #define slash_yy_create_buffer_ALREADY_DEFINED #else #define yy_create_buffer slash_yy_create_buffer #endif #ifdef yy_delete_buffer #define slash_yy_delete_buffer_ALREADY_DEFINED #else #define yy_delete_buffer slash_yy_delete_buffer #endif #ifdef yy_scan_buffer #define slash_yy_scan_buffer_ALREADY_DEFINED #else #define yy_scan_buffer slash_yy_scan_buffer #endif #ifdef yy_scan_string #define slash_yy_scan_string_ALREADY_DEFINED #else #define yy_scan_string slash_yy_scan_string #endif #ifdef yy_scan_bytes #define slash_yy_scan_bytes_ALREADY_DEFINED #else #define yy_scan_bytes slash_yy_scan_bytes #endif #ifdef yy_init_buffer #define slash_yy_init_buffer_ALREADY_DEFINED #else #define yy_init_buffer slash_yy_init_buffer #endif #ifdef yy_flush_buffer #define slash_yy_flush_buffer_ALREADY_DEFINED #else #define yy_flush_buffer slash_yy_flush_buffer #endif #ifdef yy_load_buffer_state #define slash_yy_load_buffer_state_ALREADY_DEFINED #else #define yy_load_buffer_state slash_yy_load_buffer_state #endif #ifdef yy_switch_to_buffer #define slash_yy_switch_to_buffer_ALREADY_DEFINED #else #define yy_switch_to_buffer slash_yy_switch_to_buffer #endif #ifdef yypush_buffer_state #define slash_yypush_buffer_state_ALREADY_DEFINED #else #define yypush_buffer_state slash_yypush_buffer_state #endif #ifdef yypop_buffer_state #define slash_yypop_buffer_state_ALREADY_DEFINED #else #define yypop_buffer_state slash_yypop_buffer_state #endif #ifdef yyensure_buffer_stack #define slash_yyensure_buffer_stack_ALREADY_DEFINED #else #define yyensure_buffer_stack slash_yyensure_buffer_stack #endif #ifdef yylex #define slash_yylex_ALREADY_DEFINED #else #define yylex slash_yylex #endif #ifdef yyrestart #define slash_yyrestart_ALREADY_DEFINED #else #define yyrestart slash_yyrestart #endif #ifdef yylex_init #define slash_yylex_init_ALREADY_DEFINED #else #define yylex_init slash_yylex_init #endif #ifdef yylex_init_extra #define slash_yylex_init_extra_ALREADY_DEFINED #else #define yylex_init_extra slash_yylex_init_extra #endif #ifdef yylex_destroy #define slash_yylex_destroy_ALREADY_DEFINED #else #define yylex_destroy slash_yylex_destroy #endif #ifdef yyget_debug #define slash_yyget_debug_ALREADY_DEFINED #else #define yyget_debug slash_yyget_debug #endif #ifdef yyset_debug #define slash_yyset_debug_ALREADY_DEFINED #else #define yyset_debug slash_yyset_debug #endif #ifdef yyget_extra #define slash_yyget_extra_ALREADY_DEFINED #else #define yyget_extra slash_yyget_extra #endif #ifdef yyset_extra #define slash_yyset_extra_ALREADY_DEFINED #else #define yyset_extra slash_yyset_extra #endif #ifdef yyget_in #define slash_yyget_in_ALREADY_DEFINED #else #define yyget_in slash_yyget_in #endif #ifdef yyset_in #define slash_yyset_in_ALREADY_DEFINED #else #define yyset_in slash_yyset_in #endif #ifdef yyget_out #define slash_yyget_out_ALREADY_DEFINED #else #define yyget_out slash_yyget_out #endif #ifdef yyset_out #define slash_yyset_out_ALREADY_DEFINED #else #define yyset_out slash_yyset_out #endif #ifdef yyget_leng #define slash_yyget_leng_ALREADY_DEFINED #else #define yyget_leng slash_yyget_leng #endif #ifdef yyget_text #define slash_yyget_text_ALREADY_DEFINED #else #define yyget_text slash_yyget_text #endif #ifdef yyget_lineno #define slash_yyget_lineno_ALREADY_DEFINED #else #define yyget_lineno slash_yyget_lineno #endif #ifdef yyset_lineno #define slash_yyset_lineno_ALREADY_DEFINED #else #define yyset_lineno slash_yyset_lineno #endif #ifdef yyget_column #define slash_yyget_column_ALREADY_DEFINED #else #define yyget_column slash_yyget_column #endif #ifdef yyset_column #define slash_yyset_column_ALREADY_DEFINED #else #define yyset_column slash_yyset_column #endif #ifdef yywrap #define slash_yywrap_ALREADY_DEFINED #else #define yywrap slash_yywrap #endif #ifdef yyget_lval #define slash_yyget_lval_ALREADY_DEFINED #else #define yyget_lval slash_yyget_lval #endif #ifdef yyset_lval #define slash_yyset_lval_ALREADY_DEFINED #else #define yyset_lval slash_yyset_lval #endif #ifdef yyalloc #define slash_yyalloc_ALREADY_DEFINED #else #define yyalloc slash_yyalloc #endif #ifdef yyrealloc #define slash_yyrealloc_ALREADY_DEFINED #else #define yyrealloc slash_yyrealloc #endif #ifdef yyfree #define slash_yyfree_ALREADY_DEFINED #else #define yyfree slash_yyfree #endif /* First, we deal with platform-specific or compiler-specific issues. */ /* begin standard C headers. */ #include #include #include #include /* end standard C headers. */ /* flex integer type definitions */ #ifndef FLEXINT_H #define FLEXINT_H /* C99 systems have . Non-C99 systems may or may not. */ #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h, * if you want the limit (max/min) macros for int types. */ #ifndef __STDC_LIMIT_MACROS #define __STDC_LIMIT_MACROS 1 #endif #include typedef int8_t flex_int8_t; typedef uint8_t flex_uint8_t; typedef int16_t flex_int16_t; typedef uint16_t flex_uint16_t; typedef int32_t flex_int32_t; typedef uint32_t flex_uint32_t; #else typedef signed char flex_int8_t; typedef short int flex_int16_t; typedef int flex_int32_t; typedef unsigned char flex_uint8_t; typedef unsigned short int flex_uint16_t; typedef unsigned int flex_uint32_t; /* Limits of integral types. */ #ifndef INT8_MIN #define INT8_MIN (-128) #endif #ifndef INT16_MIN #define INT16_MIN (-32767-1) #endif #ifndef INT32_MIN #define INT32_MIN (-2147483647-1) #endif #ifndef INT8_MAX #define INT8_MAX (127) #endif #ifndef INT16_MAX #define INT16_MAX (32767) #endif #ifndef INT32_MAX #define INT32_MAX (2147483647) #endif #ifndef UINT8_MAX #define UINT8_MAX (255U) #endif #ifndef UINT16_MAX #define UINT16_MAX (65535U) #endif #ifndef UINT32_MAX #define UINT32_MAX (4294967295U) #endif #ifndef SIZE_MAX #define SIZE_MAX (~(size_t)0) #endif #endif /* ! C99 */ #endif /* ! FLEXINT_H */ /* begin standard C++ headers. */ /* TODO: this is always defined, so inline it */ #define yyconst const #if defined(__GNUC__) && __GNUC__ >= 3 #define yynoreturn __attribute__((__noreturn__)) #else #define yynoreturn #endif /* Returned upon end-of-file. */ #define YY_NULL 0 /* Promotes a possibly negative, possibly signed char to an * integer in range [0..255] for use as an array index. */ #define YY_SC_TO_UI(c) ((YY_CHAR) (c)) /* An opaque pointer. */ #ifndef YY_TYPEDEF_YY_SCANNER_T #define YY_TYPEDEF_YY_SCANNER_T typedef void* yyscan_t; #endif /* For convenience, these vars (plus the bison vars far below) are macros in the reentrant scanner. */ #define yyin yyg->yyin_r #define yyout yyg->yyout_r #define yyextra yyg->yyextra_r #define yyleng yyg->yyleng_r #define yytext yyg->yytext_r #define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno) #define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column) #define yy_flex_debug yyg->yy_flex_debug_r /* 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 yyg->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 ((yyg->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 , yyscanner ) #define YY_END_OF_BUFFER_CHAR 0 /* Size of default input buffer. */ #ifndef YY_BUF_SIZE #ifdef __ia64__ /* On IA-64, the buffer size is 16k, not 8k. * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case. * Ditto for the __ia64__ case accordingly. */ #define YY_BUF_SIZE 32768 #else #define YY_BUF_SIZE 16384 #endif /* __ia64__ */ #endif /* The state buf must be large enough to hold one state per character in the main buffer. */ #define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type)) #ifndef YY_TYPEDEF_YY_BUFFER_STATE #define YY_TYPEDEF_YY_BUFFER_STATE typedef struct yy_buffer_state *YY_BUFFER_STATE; #endif #ifndef YY_TYPEDEF_YY_SIZE_T #define YY_TYPEDEF_YY_SIZE_T typedef size_t yy_size_t; #endif #define EOB_ACT_CONTINUE_SCAN 0 #define EOB_ACT_END_OF_FILE 1 #define EOB_ACT_LAST_MATCH 2 #define YY_LESS_LINENO(n) #define YY_LINENO_REWIND_TO(ptr) /* Return all but the first "n" matched characters back to the input stream. */ #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ int yyless_macro_arg = (n); \ YY_LESS_LINENO(yyless_macro_arg);\ *yy_cp = yyg->yy_hold_char; \ YY_RESTORE_YY_MORE_OFFSET \ yyg->yy_c_buf_p = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ YY_DO_BEFORE_ACTION; /* set up yytext again */ \ } \ while ( 0 ) #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner ) #ifndef YY_STRUCT_YY_BUFFER_STATE #define YY_STRUCT_YY_BUFFER_STATE 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. */ int 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; int yy_bs_lineno; /**< The line count. */ int yy_bs_column; /**< The column count. */ /* 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 }; #endif /* !YY_STRUCT_YY_BUFFER_STATE */ /* 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". * * Returns the top of the stack, or NULL. */ #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \ ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \ : NULL) /* Same as previous macro, but useful when we know that the buffer stack is not * NULL or when we need an lvalue. For internal use only. */ #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] void yyrestart ( FILE *input_file , yyscan_t yyscanner ); void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner ); YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner ); void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner ); void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner ); void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner ); void yypop_buffer_state ( yyscan_t yyscanner ); static void yyensure_buffer_stack ( yyscan_t yyscanner ); static void yy_load_buffer_state ( yyscan_t yyscanner ); static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner ); #define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner) YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner ); YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner ); YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner ); void *yyalloc ( yy_size_t , yyscan_t yyscanner ); void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner ); void yyfree ( void * , yyscan_t yyscanner ); #define yy_new_buffer yy_create_buffer #define yy_set_interactive(is_interactive) \ { \ if ( ! YY_CURRENT_BUFFER ){ \ yyensure_buffer_stack (yyscanner); \ YY_CURRENT_BUFFER_LVALUE = \ yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \ } \ YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ } #define yy_set_bol(at_bol) \ { \ if ( ! YY_CURRENT_BUFFER ){\ yyensure_buffer_stack (yyscanner); \ YY_CURRENT_BUFFER_LVALUE = \ yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \ } \ YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ } #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) /* Begin user sect3 */ #define slash_yywrap(yyscanner) (/*CONSTCOND*/1) #define YY_SKIP_YYWRAP typedef flex_uint8_t YY_CHAR; typedef int yy_state_type; #define yytext_ptr yytext_r static const flex_int16_t yy_nxt[][22] = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 }, { 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 }, { 19, 21, 22, 23, 21, 21, 21, 21, 21, 21, 21, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 }, { 19, 21, 22, 23, 21, 21, 21, 21, 21, 21, 21, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 }, { 19, 24, 25, 26, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 27, 24 }, { 19, 24, 25, 26, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 27, 24 }, { 19, 28, 29, 30, 31, 32, 28, 28, 33, 28, 28, 29, 34, 28, 28, 28, 28, 28, 28, 28, 28, 28 }, { 19, 28, 29, 30, 31, 32, 28, 28, 33, 28, 28, 29, 34, 28, 28, 28, 28, 28, 28, 28, 28, 28 }, { 19, 35, 35, 35, 35, 36, 35, 35, 35, 35, 35, 37, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35 }, { 19, 35, 35, 35, 35, 36, 35, 35, 35, 35, 35, 37, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35 }, { 19, 38, 38, 38, 38, 38, 38, 38, 39, 38, 38, 38, 40, 38, 38, 38, 38, 38, 38, 38, 38, 38 }, { 19, 38, 38, 38, 38, 38, 38, 38, 39, 38, 38, 38, 40, 38, 38, 38, 38, 38, 38, 38, 38, 38 }, { 19, 41, 41, 41, 42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41 }, { 19, 41, 41, 41, 42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41 }, { 19, 43, 44, 45, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43 }, { 19, 43, 44, 45, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43 }, { 19, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46 }, { 19, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46 }, { -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19, -19 }, { 19, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20, -20 }, { 19, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21, -21 }, { 19, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22, -22 }, { 19, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23, -23 }, { 19, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24, -24 }, { 19, -25, 48, 48, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25, -25 }, { 19, -26, 48, 48, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26, -26 }, { 19, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27, -27 }, { 19, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28, -28 }, { 19, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29, -29 }, { 19, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30, -30 }, { 19, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31, -31 }, { 19, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32 }, { 19, -33, -33, -33, 49, 50, 51, 51, -33, -33, 51, -33, -33, 51, 51, 51, 51, 51, 51, 52, -33, -33 }, { 19, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34, -34 }, { 19, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35, -35 }, { 19, -36, -36, -36, -36, 53, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36, -36 }, { 19, 54, 54, -37, 54, 54, 55, 54, 54, 54, 54, 54, 54, 56, 57, 58, 59, 60, 61, 54, 54, 54 }, { 19, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38, -38 }, { 19, -39, -39, -39, -39, 62, 63, 63, -39, -39, 63, -39, -39, 63, 63, 63, 63, 63, 63, -39, -39, -39 }, { 19, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40, -40 }, { 19, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41, -41 }, { 19, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42 }, { 19, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43, -43 }, { 19, -44, 64, 64, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44, -44 }, { 19, -45, 64, 64, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45, -45 }, { 19, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46, -46 }, { 19, -47, -47, -47, -47, -47, -47, -47, -47, -47, -47, 65, -47, -47, -47, -47, -47, -47, -47, -47, -47, -47 }, { 19, -48, 48, 48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48, -48 }, { 19, -49, -49, -49, -49, -49, 66, 66, -49, -49, 66, -49, -49, 66, 66, 66, 66, 66, 66, -49, -49, -49 }, { 19, -50, -50, -50, -50, -50, 67, 67, -50, -50, 67, -50, -50, 67, 67, 67, 67, 67, 67, -50, -50, -50 }, { 19, -51, -51, -51, -51, -51, 51, 51, -51, -51, 51, -51, -51, 51, 51, 51, 51, 51, 51, -51, -51, -51 }, { 19, -52, -52, -52, -52, -52, -52, -52, -52, 68, -52, -52, -52, -52, -52, -52, -52, -52, -52, -52, -52, -52 }, { 19, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53, -53 }, { 19, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54, -54 }, { 19, -55, -55, -55, -55, -55, 69, -55, -55, -55, -55, -55, -55, -55, -55, -55, -55, -55, -55, -55, -55, -55 }, { 19, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56, -56 }, { 19, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57, -57 }, { 19, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58, -58 }, { 19, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59, -59 }, { 19, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60, -60 }, { 19, -61, -61, -61, -61, -61, 70, 70, -61, -61, -61, -61, -61, 70, 70, -61, -61, -61, -61, -61, -61, -61 }, { 19, -62, -62, -62, -62, -62, 71, 71, -62, -62, 71, -62, -62, 71, 71, 71, 71, 71, 71, -62, -62, -62 }, { 19, -63, -63, -63, -63, -63, 63, 63, -63, -63, 63, -63, -63, 63, 63, 63, 63, 63, 63, -63, -63, -63 }, { 19, -64, 64, 64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64, -64 }, { 19, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65, -65 }, { 19, -66, -66, -66, 72, -66, 66, 66, -66, -66, 66, -66, -66, 66, 66, 66, 66, 66, 66, -66, -66, -66 }, { 19, -67, -67, -67, -67, 73, 67, 67, -67, -67, 67, -67, -67, 67, 67, 67, 67, 67, 67, -67, -67, -67 }, { 19, -68, -68, -68, -68, -68, 74, 74, -68, -68, 74, -68, -68, 74, 74, 74, 74, 74, 74, -68, -68, -68 }, { 19, -69, -69, -69, -69, -69, 75, -69, -69, -69, -69, -69, -69, -69, -69, -69, -69, -69, -69, -69, -69, -69 }, { 19, -70, -70, -70, -70, -70, 76, 76, -70, -70, -70, -70, -70, 76, 76, -70, -70, -70, -70, -70, -70, -70 }, { 19, -71, -71, -71, -71, 77, 71, 71, -71, -71, 71, -71, -71, 71, 71, 71, 71, 71, 71, -71, -71, -71 }, { 19, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72, -72 }, { 19, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73, -73 }, { 19, -74, -74, -74, -74, -74, 74, 74, -74, -74, 74, -74, -74, 74, 74, 74, 74, 74, 74, -74, -74, 78 }, { 19, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75, -75 }, { 19, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76, -76 }, { 19, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77, -77 }, { 19, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78, -78 }, } ; static yy_state_type yy_get_previous_state ( yyscan_t yyscanner ); static yy_state_type yy_try_NUL_trans ( yy_state_type current_state , yyscan_t yyscanner); static int yy_get_next_buffer ( yyscan_t yyscanner ); static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner ); /* Done after the current pattern has been matched and before the * corresponding action - sets up yytext. */ #define YY_DO_BEFORE_ACTION \ yyg->yytext_ptr = yy_bp; \ yyleng = (int) (yy_cp - yy_bp); \ yyg->yy_hold_char = *yy_cp; \ *yy_cp = '\0'; \ yyg->yy_c_buf_p = yy_cp; #define YY_NUM_RULES 42 #define YY_END_OF_BUFFER 43 /* This struct is not used in this scanner, but its presence is necessary. */ struct yy_trans_info { flex_int32_t yy_verify; flex_int32_t yy_nxt; }; static const flex_int16_t yy_accept[79] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 1, 3, 2, 2, 6, 4, 4, 5, 19, 7, 7, 10, 8, 19, 9, 30, 20, 30, 35, 35, 31, 37, 36, 39, 38, 38, 41, 41, 4, 16, 15, 11, 18, 21, 29, 27, 24, 26, 22, 25, 23, 29, 34, 32, 38, 40, 16, 15, 17, 27, 28, 34, 13, 12, 17, 27, 28, 33, 14 } ; static const YY_CHAR yy_ec[256] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 4, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 8, 1, 1, 1, 1, 9, 1, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 11, 1, 1, 10, 12, 7, 13, 7, 7, 7, 14, 10, 10, 10, 10, 10, 10, 10, 15, 10, 10, 10, 16, 10, 17, 10, 10, 10, 18, 10, 10, 19, 20, 21, 1, 1, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 } ; /* 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 #line 1 "psqlscanslash.l" #line 29 "psqlscanslash.l" #include "fe_utils/psqlscan_int.h" /* * We must have a typedef YYSTYPE for yylex's first argument, but this lexer * doesn't presently make use of that argument, so just declare it as int. */ typedef int YYSTYPE; /* * Set the type of yyextra; we use it as a pointer back to the containing * PsqlScanState. */ #define YY_EXTRA_TYPE PsqlScanState /* * These variables do not need to be saved across calls. Yeah, it's a bit * of a hack, but putting them into PsqlScanStateData would be klugy too. */ static enum slash_option_type option_type; static char *option_quote; static int unquoted_option_chars; static int backtick_start_offset; /* Return values from yylex() */ #define LEXRES_EOL 0 /* end of input */ #define LEXRES_OK 1 /* OK completion of backslash argument */ static void evaluate_backtick(PsqlScanState state); #define ECHO psqlscan_emit(cur_state, yytext, yyleng) /* * Work around a bug in flex 2.5.35: it emits a couple of functions that * it forgets to emit declarations for. Since we use -Wmissing-prototypes, * this would cause warnings. Providing our own declarations should be * harmless even when the bug gets fixed. */ extern int slash_yyget_column(yyscan_t yyscanner); extern void slash_yyset_column(int column_no, yyscan_t yyscanner); /* LCOV_EXCL_START */ #line 1196 "psqlscanslash.c" /* Except for the prefix, these options should match psqlscan.l */ #define YY_NO_INPUT 1 /* * 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. */ /* Exclusive states for lexing backslash commands */ /* * Assorted character class definitions that should match psqlscan.l. */ #line 1212 "psqlscanslash.c" #define INITIAL 0 #define xslashcmd 1 #define xslashargstart 2 #define xslasharg 3 #define xslashquote 4 #define xslashbackquote 5 #define xslashdquote 6 #define xslashwholeline 7 #define xslashend 8 #ifndef YY_NO_UNISTD_H /* Special case for "unistd.h", since it is non-ANSI. We include it way * down here because we want the user's section 1 to have been scanned first. * The user has a chance to override it with an option. */ #include #endif #ifndef YY_EXTRA_TYPE #define YY_EXTRA_TYPE void * #endif /* Holds the entire state of the reentrant scanner. */ struct yyguts_t { /* User-defined. Not touched by flex. */ YY_EXTRA_TYPE yyextra_r; /* The rest are the same as the globals declared in the non-reentrant scanner. */ FILE *yyin_r, *yyout_r; size_t yy_buffer_stack_top; /**< index of top of stack. */ size_t yy_buffer_stack_max; /**< capacity of stack. */ YY_BUFFER_STATE * yy_buffer_stack; /**< Stack as an array. */ char yy_hold_char; int yy_n_chars; int yyleng_r; char *yy_c_buf_p; int yy_init; int yy_start; int yy_did_buffer_switch_on_eof; int yy_start_stack_ptr; int yy_start_stack_depth; int *yy_start_stack; yy_state_type yy_last_accepting_state; char* yy_last_accepting_cpos; int yylineno_r; int yy_flex_debug_r; char *yytext_r; int yy_more_flag; int yy_more_len; YYSTYPE * yylval_r; }; /* end struct yyguts_t */ static int yy_init_globals ( yyscan_t yyscanner ); /* This must go here because YYSTYPE and YYLTYPE are included * from bison output in section 1.*/ # define yylval yyg->yylval_r int yylex_init (yyscan_t* scanner); int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner); /* Accessor methods to globals. These are made visible to non-reentrant scanners for convenience. */ int yylex_destroy ( yyscan_t yyscanner ); int yyget_debug ( yyscan_t yyscanner ); void yyset_debug ( int debug_flag , yyscan_t yyscanner ); YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner ); void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner ); FILE *yyget_in ( yyscan_t yyscanner ); void yyset_in ( FILE * _in_str , yyscan_t yyscanner ); FILE *yyget_out ( yyscan_t yyscanner ); void yyset_out ( FILE * _out_str , yyscan_t yyscanner ); int yyget_leng ( yyscan_t yyscanner ); char *yyget_text ( yyscan_t yyscanner ); int yyget_lineno ( yyscan_t yyscanner ); void yyset_lineno ( int _line_number , yyscan_t yyscanner ); int yyget_column ( yyscan_t yyscanner ); void yyset_column ( int _column_no , yyscan_t yyscanner ); YYSTYPE * yyget_lval ( yyscan_t yyscanner ); void yyset_lval ( YYSTYPE * yylval_param , yyscan_t yyscanner ); /* Macros after this point can all be overridden by user definitions in * section 1. */ #ifndef YY_SKIP_YYWRAP #ifdef __cplusplus extern "C" int yywrap ( yyscan_t yyscanner ); #else extern int yywrap ( yyscan_t yyscanner ); #endif #endif #ifndef YY_NO_UNPUT #endif #ifndef yytext_ptr static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner); #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen ( const char * , yyscan_t yyscanner); #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput ( yyscan_t yyscanner ); #else static int input ( yyscan_t yyscanner ); #endif #endif /* Amount of stuff to slurp up with each read. */ #ifndef YY_READ_BUF_SIZE #ifdef __ia64__ /* On IA-64, the buffer size is 16k, not 8k */ #define YY_READ_BUF_SIZE 16384 #else #define YY_READ_BUF_SIZE 8192 #endif /* __ia64__ */ #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 do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0) #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_LVALUE->yy_is_interactive ) \ { \ int c = '*'; \ int 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 \ { \ errno=0; \ while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \ { \ if( errno != EINTR) \ { \ YY_FATAL_ERROR( "input in flex scanner failed" ); \ break; \ } \ errno=0; \ clearerr(yyin); \ } \ }\ \ #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 , yyscanner) #endif /* end tables serialization structures and prototypes */ /* Default declaration of generated scanner - a define so the user can * easily add parameters. */ #ifndef YY_DECL #define YY_DECL_IS_OURS 1 extern int yylex \ (YYSTYPE * yylval_param , yyscan_t yyscanner); #define YY_DECL int yylex \ (YYSTYPE * yylval_param , yyscan_t yyscanner) #endif /* !YY_DECL */ /* 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 /*LINTED*/break; #endif #define YY_RULE_SETUP \ YY_USER_ACTION /** The main scanner function which does all the work. */ YY_DECL { yy_state_type yy_current_state; char *yy_cp, *yy_bp; int yy_act; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yylval = yylval_param; if ( !yyg->yy_init ) { yyg->yy_init = 1; #ifdef YY_USER_INIT YY_USER_INIT; #endif if ( ! yyg->yy_start ) yyg->yy_start = 1; /* first start state */ if ( ! yyin ) yyin = stdin; if ( ! yyout ) yyout = stdout; if ( ! YY_CURRENT_BUFFER ) { yyensure_buffer_stack (yyscanner); YY_CURRENT_BUFFER_LVALUE = yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); } yy_load_buffer_state( yyscanner ); } { #line 119 "psqlscanslash.l" #line 123 "psqlscanslash.l" /* Declare some local variables inside yylex(), for convenience */ PsqlScanState cur_state = yyextra; PQExpBuffer output_buf = cur_state->output_buf; /* * Force flex into the state indicated by start_state. This has a * couple of purposes: it lets some of the functions below set a new * starting state without ugly direct access to flex variables, and it * allows us to transition from one flex lexer to another so that we * can lex different parts of the source string using separate lexers. */ BEGIN(cur_state->start_state); /* * We don't really expect to be invoked in the INITIAL state in this * lexer; but if we are, just spit data to the output_buf until EOF. */ #line 1516 "psqlscanslash.c" while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */ { yy_cp = yyg->yy_c_buf_p; /* Support of yytext. */ *yy_cp = yyg->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 = yyg->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: /* rule 1 can match eol */ YY_RULE_SETUP #line 142 "psqlscanslash.l" { ECHO; } YY_BREAK /* * Exclusive lexer states to handle backslash command lexing */ /* command name ends at whitespace or backslash; eat all else */ case 2: /* rule 2 can match eol */ YY_RULE_SETUP #line 151 "psqlscanslash.l" { yyless(0); cur_state->start_state = YY_START; return LEXRES_OK; } YY_BREAK case 3: YY_RULE_SETUP #line 157 "psqlscanslash.l" { ECHO; } YY_BREAK /* * Discard any whitespace before argument, then go to xslasharg state. * An exception is that "|" is only special at start of argument, so we * check for it here. */ case 4: /* rule 4 can match eol */ YY_RULE_SETUP #line 168 "psqlscanslash.l" { } YY_BREAK case 5: YY_RULE_SETUP #line 170 "psqlscanslash.l" { if (option_type == OT_FILEPIPE) { /* treat like whole-string case */ ECHO; BEGIN(xslashwholeline); } else { /* vertical bar is not special otherwise */ yyless(0); BEGIN(xslasharg); } } YY_BREAK case 6: YY_RULE_SETUP #line 185 "psqlscanslash.l" { yyless(0); BEGIN(xslasharg); } YY_BREAK /* * Default processing of text in a slash command's argument. * * Note: unquoted_option_chars counts the number of characters at the * end of the argument that were not subject to any form of quoting. * psql_scan_slash_option needs this to strip trailing semicolons safely. */ case 7: /* rule 7 can match eol */ YY_RULE_SETUP #line 201 "psqlscanslash.l" { /* * Unquoted space is end of arg; do not eat. Likewise * backslash is end of command or next command, do not eat * * XXX this means we can't conveniently accept options * that include unquoted backslashes; therefore, option * processing that encourages use of backslashes is rather * broken. */ yyless(0); cur_state->start_state = YY_START; return LEXRES_OK; } YY_BREAK case 8: YY_RULE_SETUP #line 216 "psqlscanslash.l" { *option_quote = '\''; unquoted_option_chars = 0; BEGIN(xslashquote); } YY_BREAK case 9: YY_RULE_SETUP #line 222 "psqlscanslash.l" { backtick_start_offset = output_buf->len; *option_quote = '`'; unquoted_option_chars = 0; BEGIN(xslashbackquote); } YY_BREAK case 10: YY_RULE_SETUP #line 229 "psqlscanslash.l" { ECHO; *option_quote = '"'; unquoted_option_chars = 0; BEGIN(xslashdquote); } YY_BREAK case 11: YY_RULE_SETUP #line 236 "psqlscanslash.l" { /* Possible psql variable substitution */ if (cur_state->callbacks->get_variable == NULL) ECHO; else { char *varname; char *value; varname = psqlscan_extract_substring(cur_state, yytext + 1, yyleng - 1); value = cur_state->callbacks->get_variable(varname, PQUOTE_PLAIN, cur_state->cb_passthrough); free(varname); /* * 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. * Note that we needn't guard against recursion here. */ if (value) { appendPQExpBufferStr(output_buf, value); free(value); } else ECHO; *option_quote = ':'; } unquoted_option_chars = 0; } YY_BREAK case 12: YY_RULE_SETUP #line 273 "psqlscanslash.l" { psqlscan_escape_variable(cur_state, yytext, yyleng, PQUOTE_SQL_LITERAL); *option_quote = ':'; unquoted_option_chars = 0; } YY_BREAK case 13: YY_RULE_SETUP #line 281 "psqlscanslash.l" { psqlscan_escape_variable(cur_state, yytext, yyleng, PQUOTE_SQL_IDENT); *option_quote = ':'; unquoted_option_chars = 0; } YY_BREAK case 14: YY_RULE_SETUP #line 288 "psqlscanslash.l" { psqlscan_test_variable(cur_state, yytext, yyleng); } YY_BREAK case 15: YY_RULE_SETUP #line 292 "psqlscanslash.l" { /* Throw back everything but the colon */ yyless(1); unquoted_option_chars++; ECHO; } YY_BREAK case 16: YY_RULE_SETUP #line 299 "psqlscanslash.l" { /* Throw back everything but the colon */ yyless(1); unquoted_option_chars++; ECHO; } YY_BREAK case 17: YY_RULE_SETUP #line 306 "psqlscanslash.l" { /* Throw back everything but the colon */ yyless(1); unquoted_option_chars++; ECHO; } YY_BREAK case 18: YY_RULE_SETUP #line 313 "psqlscanslash.l" { /* Throw back everything but the colon */ yyless(1); unquoted_option_chars++; ECHO; } YY_BREAK case 19: YY_RULE_SETUP #line 320 "psqlscanslash.l" { unquoted_option_chars++; ECHO; } YY_BREAK /* * single-quoted text: copy literally except for '' and backslash * sequences */ case 20: YY_RULE_SETUP #line 333 "psqlscanslash.l" { BEGIN(xslasharg); } YY_BREAK case 21: YY_RULE_SETUP #line 335 "psqlscanslash.l" { appendPQExpBufferChar(output_buf, '\''); } YY_BREAK case 22: YY_RULE_SETUP #line 337 "psqlscanslash.l" { appendPQExpBufferChar(output_buf, '\n'); } YY_BREAK case 23: YY_RULE_SETUP #line 338 "psqlscanslash.l" { appendPQExpBufferChar(output_buf, '\t'); } YY_BREAK case 24: YY_RULE_SETUP #line 339 "psqlscanslash.l" { appendPQExpBufferChar(output_buf, '\b'); } YY_BREAK case 25: YY_RULE_SETUP #line 340 "psqlscanslash.l" { appendPQExpBufferChar(output_buf, '\r'); } YY_BREAK case 26: YY_RULE_SETUP #line 341 "psqlscanslash.l" { appendPQExpBufferChar(output_buf, '\f'); } YY_BREAK case 27: YY_RULE_SETUP #line 343 "psqlscanslash.l" { /* octal case */ appendPQExpBufferChar(output_buf, (char) strtol(yytext + 1, NULL, 8)); } YY_BREAK case 28: YY_RULE_SETUP #line 349 "psqlscanslash.l" { /* hex case */ appendPQExpBufferChar(output_buf, (char) strtol(yytext + 2, NULL, 16)); } YY_BREAK case 29: YY_RULE_SETUP #line 355 "psqlscanslash.l" { psqlscan_emit(cur_state, yytext + 1, 1); } YY_BREAK case 30: /* rule 30 can match eol */ YY_RULE_SETUP #line 357 "psqlscanslash.l" { ECHO; } YY_BREAK /* * backticked text: copy everything until next backquote (expanding * variable references, but doing nought else), then evaluate. */ case 31: YY_RULE_SETUP #line 367 "psqlscanslash.l" { /* In an inactive \if branch, don't evaluate the command */ if (cur_state->cb_passthrough == NULL || conditional_active((ConditionalStack) cur_state->cb_passthrough)) evaluate_backtick(cur_state); BEGIN(xslasharg); } YY_BREAK case 32: YY_RULE_SETUP #line 375 "psqlscanslash.l" { /* Possible psql variable substitution */ if (cur_state->callbacks->get_variable == NULL) ECHO; else { char *varname; char *value; varname = psqlscan_extract_substring(cur_state, yytext + 1, yyleng - 1); value = cur_state->callbacks->get_variable(varname, PQUOTE_PLAIN, cur_state->cb_passthrough); free(varname); if (value) { appendPQExpBufferStr(output_buf, value); free(value); } else ECHO; } } YY_BREAK case 33: YY_RULE_SETUP #line 402 "psqlscanslash.l" { psqlscan_escape_variable(cur_state, yytext, yyleng, PQUOTE_SHELL_ARG); } YY_BREAK case 34: YY_RULE_SETUP #line 407 "psqlscanslash.l" { /* Throw back everything but the colon */ yyless(1); ECHO; } YY_BREAK case 35: /* rule 35 can match eol */ YY_RULE_SETUP #line 413 "psqlscanslash.l" { ECHO; } YY_BREAK /* double-quoted text: copy verbatim, including the double quotes */ case 36: YY_RULE_SETUP #line 420 "psqlscanslash.l" { ECHO; BEGIN(xslasharg); } YY_BREAK case 37: /* rule 37 can match eol */ YY_RULE_SETUP #line 425 "psqlscanslash.l" { ECHO; } YY_BREAK /* copy everything until end of input line */ /* but suppress leading whitespace */ case 38: /* rule 38 can match eol */ YY_RULE_SETUP #line 433 "psqlscanslash.l" { if (output_buf->len > 0) ECHO; } YY_BREAK case 39: YY_RULE_SETUP #line 438 "psqlscanslash.l" { ECHO; } YY_BREAK /* at end of command, eat a double backslash, but not anything else */ case 40: YY_RULE_SETUP #line 445 "psqlscanslash.l" { cur_state->start_state = YY_START; return LEXRES_OK; } YY_BREAK case 41: /* rule 41 can match eol */ YY_RULE_SETUP #line 450 "psqlscanslash.l" { yyless(0); cur_state->start_state = YY_START; return LEXRES_OK; } YY_BREAK case YY_STATE_EOF(INITIAL): case YY_STATE_EOF(xslashcmd): case YY_STATE_EOF(xslashargstart): case YY_STATE_EOF(xslasharg): case YY_STATE_EOF(xslashquote): case YY_STATE_EOF(xslashbackquote): case YY_STATE_EOF(xslashdquote): case YY_STATE_EOF(xslashwholeline): case YY_STATE_EOF(xslashend): #line 458 "psqlscanslash.l" { if (cur_state->buffer_stack == NULL) { cur_state->start_state = YY_START; return LEXRES_EOL; /* end of input reached */ } /* * We were expanding a variable, so pop the inclusion * stack and keep lexing */ psqlscan_pop_buffer_stack(cur_state); psqlscan_select_top_buffer(cur_state); } YY_BREAK case 42: YY_RULE_SETUP #line 473 "psqlscanslash.l" YY_FATAL_ERROR( "flex scanner jammed" ); YY_BREAK #line 2010 "psqlscanslash.c" case YY_END_OF_BUFFER: { /* Amount of text matched not including the EOB char. */ int yy_amount_of_matched_text = (int) (yy_cp - yyg->yytext_ptr) - 1; /* Undo the effects of YY_DO_BEFORE_ACTION. */ *yy_cp = yyg->yy_hold_char; YY_RESTORE_YY_MORE_OFFSET if ( YY_CURRENT_BUFFER_LVALUE->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. */ yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; YY_CURRENT_BUFFER_LVALUE->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 ( yyg->yy_c_buf_p <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] ) { /* This was really a NUL. */ yy_state_type yy_next_state; yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state( yyscanner ); /* 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 , yyscanner); yy_bp = yyg->yytext_ptr + YY_MORE_ADJ; if ( yy_next_state ) { /* Consume the NUL. */ yy_cp = ++yyg->yy_c_buf_p; yy_current_state = yy_next_state; goto yy_match; } else { yy_cp = yyg->yy_c_buf_p; goto yy_find_action; } } else switch ( yy_get_next_buffer( yyscanner ) ) { case EOB_ACT_END_OF_FILE: { yyg->yy_did_buffer_switch_on_eof = 0; if ( yywrap( yyscanner ) ) { /* 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. */ yyg->yy_c_buf_p = yyg->yytext_ptr + YY_MORE_ADJ; yy_act = YY_STATE_EOF(YY_START); goto do_action; } else { if ( ! yyg->yy_did_buffer_switch_on_eof ) YY_NEW_FILE; } break; } case EOB_ACT_CONTINUE_SCAN: yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state( yyscanner ); yy_cp = yyg->yy_c_buf_p; yy_bp = yyg->yytext_ptr + YY_MORE_ADJ; goto yy_match; case EOB_ACT_LAST_MATCH: yyg->yy_c_buf_p = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars]; yy_current_state = yy_get_previous_state( yyscanner ); yy_cp = yyg->yy_c_buf_p; yy_bp = yyg->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 user's declarations */ } /* 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 (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; char *source = yyg->yytext_ptr; int number_to_move, i; int ret_val; if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] ) YY_FATAL_ERROR( "fatal flex scanner internal error--end of buffer missed" ); if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) { /* Don't try to fill the buffer, so this is an EOF. */ if ( yyg->yy_c_buf_p - yyg->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) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1); for ( i = 0; i < number_to_move; ++i ) *(dest++) = *(source++); if ( YY_CURRENT_BUFFER_LVALUE->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_LVALUE->yy_n_chars = yyg->yy_n_chars = 0; else { int num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; while ( num_to_read <= 0 ) { /* Not enough room in the buffer - grow it. */ /* just a shorter name for the current buffer */ YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE; int yy_c_buf_p_offset = (int) (yyg->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. */ yyrealloc( (void *) b->yy_ch_buf, (yy_size_t) (b->yy_buf_size + 2) , yyscanner ); } else /* Can't grow it, we don't own it. */ b->yy_ch_buf = NULL; if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" ); yyg->yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset]; num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; } if ( num_to_read > YY_READ_BUF_SIZE ) num_to_read = YY_READ_BUF_SIZE; /* Read in more data. */ YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), yyg->yy_n_chars, num_to_read ); YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars; } if ( yyg->yy_n_chars == 0 ) { if ( number_to_move == YY_MORE_ADJ ) { ret_val = EOB_ACT_END_OF_FILE; yyrestart( yyin , yyscanner); } else { ret_val = EOB_ACT_LAST_MATCH; YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_EOF_PENDING; } } else ret_val = EOB_ACT_CONTINUE_SCAN; if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) { /* Extend the array by 50%, plus the number we really need. */ int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1); YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc( (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner ); if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" ); /* "- 2" to take care of EOB's */ YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2); } yyg->yy_n_chars += number_to_move; YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR; YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR; yyg->yytext_ptr = &YY_CURRENT_BUFFER_LVALUE->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 (yyscan_t yyscanner) { yy_state_type yy_current_state; char *yy_cp; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yy_current_state = yyg->yy_start; for ( yy_cp = yyg->yytext_ptr + YY_MORE_ADJ; yy_cp < yyg->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 ); */ static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state , yyscan_t yyscanner) { int yy_is_jam; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* This var may be unused depending upon options. */ yy_current_state = yy_nxt[yy_current_state][1]; yy_is_jam = (yy_current_state <= 0); (void)yyg; return yy_is_jam ? 0 : yy_current_state; } #ifndef YY_NO_UNPUT #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput (yyscan_t yyscanner) #else static int input (yyscan_t yyscanner) #endif { int c; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; *yyg->yy_c_buf_p = yyg->yy_hold_char; if ( *yyg->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 ( yyg->yy_c_buf_p < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] ) /* This was really a NUL. */ *yyg->yy_c_buf_p = '\0'; else { /* need more input */ int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr); ++yyg->yy_c_buf_p; switch ( yy_get_next_buffer( yyscanner ) ) { 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 , yyscanner); /*FALLTHROUGH*/ case EOB_ACT_END_OF_FILE: { if ( yywrap( yyscanner ) ) return 0; if ( ! yyg->yy_did_buffer_switch_on_eof ) YY_NEW_FILE; #ifdef __cplusplus return yyinput(yyscanner); #else return input(yyscanner); #endif } case EOB_ACT_CONTINUE_SCAN: yyg->yy_c_buf_p = yyg->yytext_ptr + offset; break; } } } c = *(unsigned char *) yyg->yy_c_buf_p; /* cast for 8-bit char's */ *yyg->yy_c_buf_p = '\0'; /* preserve yytext */ yyg->yy_hold_char = *++yyg->yy_c_buf_p; return c; } #endif /* ifndef YY_NO_INPUT */ /** Immediately switch to a different input stream. * @param input_file A readable stream. * @param yyscanner The scanner object. * @note This function does not reset the start condition to @c INITIAL . */ void yyrestart (FILE * input_file , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if ( ! YY_CURRENT_BUFFER ){ yyensure_buffer_stack (yyscanner); YY_CURRENT_BUFFER_LVALUE = yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); } yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner); yy_load_buffer_state( yyscanner ); } /** Switch to a different input buffer. * @param new_buffer The new input buffer. * @param yyscanner The scanner object. */ void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* TODO. We should be able to replace this entire function body * with * yypop_buffer_state(); * yypush_buffer_state(new_buffer); */ yyensure_buffer_stack (yyscanner); if ( YY_CURRENT_BUFFER == new_buffer ) return; if ( YY_CURRENT_BUFFER ) { /* Flush out information for old buffer. */ *yyg->yy_c_buf_p = yyg->yy_hold_char; YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p; YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars; } YY_CURRENT_BUFFER_LVALUE = new_buffer; yy_load_buffer_state( yyscanner ); /* 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. */ yyg->yy_did_buffer_switch_on_eof = 1; } static void yy_load_buffer_state (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; yyg->yytext_ptr = yyg->yy_c_buf_p = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; yyg->yy_hold_char = *yyg->yy_c_buf_p; } /** Allocate and initialize an input buffer state. * @param file A readable stream. * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. * @param yyscanner The scanner object. * @return the allocated buffer state. */ YY_BUFFER_STATE yy_create_buffer (FILE * file, int size , yyscan_t yyscanner) { YY_BUFFER_STATE b; b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner ); 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 *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner ); 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 , yyscanner); return b; } /** Destroy the buffer. * @param b a buffer created with yy_create_buffer() * @param yyscanner The scanner object. */ void yy_delete_buffer (YY_BUFFER_STATE b , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if ( ! b ) return; if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; if ( b->yy_is_our_buffer ) yyfree( (void *) b->yy_ch_buf , yyscanner ); yyfree( (void *) b , yyscanner ); } /* Initializes or reinitializes a buffer. * This function is sometimes called more than once on the same buffer, * such as during a yyrestart() or at EOF. */ static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file , yyscan_t yyscanner) { int oerrno = errno; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yy_flush_buffer( b , yyscanner); b->yy_input_file = file; b->yy_fill_buffer = 1; /* If b is the current buffer, then yy_init_buffer was _probably_ * called from yyrestart() or through yy_get_next_buffer. * In that case, we don't want to reset the lineno or column. */ if (b != YY_CURRENT_BUFFER){ b->yy_bs_lineno = 1; b->yy_bs_column = 0; } b->yy_is_interactive = 0; errno = oerrno; } /** Discard all buffered characters. On the next scan, YY_INPUT will be called. * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. * @param yyscanner The scanner object. */ void yy_flush_buffer (YY_BUFFER_STATE b , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; 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( yyscanner ); } /** Pushes the new state onto the stack. The new state becomes * the current state. This function will allocate the stack * if necessary. * @param new_buffer The new state. * @param yyscanner The scanner object. */ void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (new_buffer == NULL) return; yyensure_buffer_stack(yyscanner); /* This block is copied from yy_switch_to_buffer. */ if ( YY_CURRENT_BUFFER ) { /* Flush out information for old buffer. */ *yyg->yy_c_buf_p = yyg->yy_hold_char; YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p; YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars; } /* Only push if top exists. Otherwise, replace top. */ if (YY_CURRENT_BUFFER) yyg->yy_buffer_stack_top++; YY_CURRENT_BUFFER_LVALUE = new_buffer; /* copied from yy_switch_to_buffer. */ yy_load_buffer_state( yyscanner ); yyg->yy_did_buffer_switch_on_eof = 1; } /** Removes and deletes the top of the stack, if present. * The next element becomes the new top. * @param yyscanner The scanner object. */ void yypop_buffer_state (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (!YY_CURRENT_BUFFER) return; yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner); YY_CURRENT_BUFFER_LVALUE = NULL; if (yyg->yy_buffer_stack_top > 0) --yyg->yy_buffer_stack_top; if (YY_CURRENT_BUFFER) { yy_load_buffer_state( yyscanner ); yyg->yy_did_buffer_switch_on_eof = 1; } } /* Allocates the stack if it does not exist. * Guarantees space for at least one push. */ static void yyensure_buffer_stack (yyscan_t yyscanner) { yy_size_t num_to_alloc; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (!yyg->yy_buffer_stack) { /* First allocation is just for 2 elements, since we don't know if this * scanner will even need a stack. We use 2 instead of 1 to avoid an * immediate realloc on the next call. */ num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */ yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc (num_to_alloc * sizeof(struct yy_buffer_state*) , yyscanner); if ( ! yyg->yy_buffer_stack ) YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*)); yyg->yy_buffer_stack_max = num_to_alloc; yyg->yy_buffer_stack_top = 0; return; } if (yyg->yy_buffer_stack_top >= (yyg->yy_buffer_stack_max) - 1){ /* Increase the buffer to prepare for a possible push. */ yy_size_t grow_size = 8 /* arbitrary grow size */; num_to_alloc = yyg->yy_buffer_stack_max + grow_size; yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc (yyg->yy_buffer_stack, num_to_alloc * sizeof(struct yy_buffer_state*) , yyscanner); if ( ! yyg->yy_buffer_stack ) YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); /* zero only the new slots.*/ memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*)); yyg->yy_buffer_stack_max = num_to_alloc; } } /** Setup the input buffer state to scan directly from a user-specified character buffer. * @param base the character buffer * @param size the size in bytes of the character buffer * @param yyscanner The scanner object. * @return the newly allocated buffer state object. */ YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size , yyscan_t yyscanner) { 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 NULL; b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); b->yy_buf_size = (int) (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 = NULL; 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 , yyscanner ); return b; } /** Setup the input buffer state to scan a string. The next call to yylex() will * scan from a @e copy of @a str. * @param yystr a NUL-terminated string to scan * @param yyscanner The scanner object. * @return the newly allocated buffer state object. * @note If you want to scan bytes that may contain NUL values, then use * yy_scan_bytes() instead. */ YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner) { return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner); } /** Setup the input buffer state to scan the given bytes. The next call to yylex() will * scan from a @e copy of @a bytes. * @param yybytes the byte buffer to scan * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes. * @param yyscanner The scanner object. * @return the newly allocated buffer state object. */ YY_BUFFER_STATE yy_scan_bytes (const char * yybytes, int _yybytes_len , yyscan_t yyscanner) { YY_BUFFER_STATE b; char *buf; yy_size_t n; int i; /* Get memory for full buffer, including space for trailing EOB's. */ n = (yy_size_t) (_yybytes_len + 2); buf = (char *) yyalloc( n , yyscanner ); if ( ! buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); for ( i = 0; i < _yybytes_len; ++i ) buf[i] = yybytes[i]; buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR; b = yy_scan_buffer( buf, n , yyscanner); 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; } #ifndef YY_EXIT_FAILURE #define YY_EXIT_FAILURE 2 #endif static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; 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. */ \ int yyless_macro_arg = (n); \ YY_LESS_LINENO(yyless_macro_arg);\ yytext[yyleng] = yyg->yy_hold_char; \ yyg->yy_c_buf_p = yytext + yyless_macro_arg; \ yyg->yy_hold_char = *yyg->yy_c_buf_p; \ *yyg->yy_c_buf_p = '\0'; \ yyleng = yyless_macro_arg; \ } \ while ( 0 ) /* Accessor methods (get/set functions) to struct members. */ /** Get the user-defined data for this scanner. * @param yyscanner The scanner object. */ YY_EXTRA_TYPE yyget_extra (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyextra; } /** Get the current line number. * @param yyscanner The scanner object. */ int yyget_lineno (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (! YY_CURRENT_BUFFER) return 0; return yylineno; } /** Get the current column number. * @param yyscanner The scanner object. */ int yyget_column (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (! YY_CURRENT_BUFFER) return 0; return yycolumn; } /** Get the input stream. * @param yyscanner The scanner object. */ FILE *yyget_in (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyin; } /** Get the output stream. * @param yyscanner The scanner object. */ FILE *yyget_out (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyout; } /** Get the length of the current token. * @param yyscanner The scanner object. */ int yyget_leng (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyleng; } /** Get the current token. * @param yyscanner The scanner object. */ char *yyget_text (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yytext; } /** Set the user-defined data. This data is never touched by the scanner. * @param user_defined The data to be associated with this scanner. * @param yyscanner The scanner object. */ void yyset_extra (YY_EXTRA_TYPE user_defined , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyextra = user_defined ; } /** Set the current line number. * @param _line_number line number * @param yyscanner The scanner object. */ void yyset_lineno (int _line_number , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* lineno is only valid if an input buffer exists. */ if (! YY_CURRENT_BUFFER ) YY_FATAL_ERROR( "yyset_lineno called with no buffer" ); yylineno = _line_number; } /** Set the current column. * @param _column_no column number * @param yyscanner The scanner object. */ void yyset_column (int _column_no , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* column is only valid if an input buffer exists. */ if (! YY_CURRENT_BUFFER ) YY_FATAL_ERROR( "yyset_column called with no buffer" ); yycolumn = _column_no; } /** Set the input stream. This does not discard the current * input buffer. * @param _in_str A readable stream. * @param yyscanner The scanner object. * @see yy_switch_to_buffer */ void yyset_in (FILE * _in_str , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyin = _in_str ; } void yyset_out (FILE * _out_str , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyout = _out_str ; } int yyget_debug (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yy_flex_debug; } void yyset_debug (int _bdebug , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yy_flex_debug = _bdebug ; } /* Accessor methods for yylval and yylloc */ YYSTYPE * yyget_lval (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yylval; } void yyset_lval (YYSTYPE * yylval_param , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yylval = yylval_param; } /* User-visible API */ /* yylex_init is special because it creates the scanner itself, so it is * the ONLY reentrant function that doesn't take the scanner as the last argument. * That's why we explicitly handle the declaration, instead of using our macros. */ int yylex_init(yyscan_t* ptr_yy_globals) { if (ptr_yy_globals == NULL){ errno = EINVAL; return 1; } *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL ); if (*ptr_yy_globals == NULL){ errno = ENOMEM; return 1; } /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */ memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t)); return yy_init_globals ( *ptr_yy_globals ); } /* yylex_init_extra has the same functionality as yylex_init, but follows the * convention of taking the scanner as the last argument. Note however, that * this is a *pointer* to a scanner, as it will be allocated by this call (and * is the reason, too, why this function also must handle its own declaration). * The user defined value in the first argument will be available to yyalloc in * the yyextra field. */ int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals ) { struct yyguts_t dummy_yyguts; yyset_extra (yy_user_defined, &dummy_yyguts); if (ptr_yy_globals == NULL){ errno = EINVAL; return 1; } *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts ); if (*ptr_yy_globals == NULL){ errno = ENOMEM; return 1; } /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */ memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t)); yyset_extra (yy_user_defined, *ptr_yy_globals); return yy_init_globals ( *ptr_yy_globals ); } static int yy_init_globals (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* Initialization is the same as for the non-reentrant scanner. * This function is called from yylex_destroy(), so don't allocate here. */ yyg->yy_buffer_stack = NULL; yyg->yy_buffer_stack_top = 0; yyg->yy_buffer_stack_max = 0; yyg->yy_c_buf_p = NULL; yyg->yy_init = 0; yyg->yy_start = 0; yyg->yy_start_stack_ptr = 0; yyg->yy_start_stack_depth = 0; yyg->yy_start_stack = NULL; /* Defined in main.c */ #ifdef YY_STDINIT yyin = stdin; yyout = stdout; #else yyin = NULL; yyout = NULL; #endif /* For future reference: Set errno on error, since we are called by * yylex_init() */ return 0; } /* yylex_destroy is for both reentrant and non-reentrant scanners. */ int yylex_destroy (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* Pop the buffer stack, destroying each element. */ while(YY_CURRENT_BUFFER){ yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner ); YY_CURRENT_BUFFER_LVALUE = NULL; yypop_buffer_state(yyscanner); } /* Destroy the stack itself. */ yyfree(yyg->yy_buffer_stack , yyscanner); yyg->yy_buffer_stack = NULL; /* Destroy the start condition stack. */ yyfree( yyg->yy_start_stack , yyscanner ); yyg->yy_start_stack = NULL; /* Reset the globals. This is important in a non-reentrant scanner so the next time * yylex() is called, initialization will occur. */ yy_init_globals( yyscanner); /* Destroy the main struct (reentrant only). */ yyfree ( yyscanner , yyscanner ); yyscanner = NULL; return 0; } /* * Internal utility routines. */ #ifndef yytext_ptr static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; int i; for ( i = 0; i < n; ++i ) s1[i] = s2[i]; } #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen (const char * s , yyscan_t yyscanner) { int n; for ( n = 0; s[n]; ++n ) ; return n; } #endif void *yyalloc (yy_size_t size , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; return malloc(size); } void *yyrealloc (void * ptr, yy_size_t size , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; /* 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 realloc(ptr, size); } void yyfree (void * ptr , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ } #define YYTABLES_NAME "yytables" #line 473 "psqlscanslash.l" /* LCOV_EXCL_STOP */ /* * 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; /* Must be scanning already */ Assert(state->scanbufhandle != NULL); /* Build a local buffer that we'll return the data of */ initPQExpBuffer(&mybuf); /* Set current output target */ state->output_buf = &mybuf; /* Set input source */ if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf, state->scanner); else yy_switch_to_buffer(state->scanbufhandle, state->scanner); /* * Set lexer start state. Note that this is sufficient to switch * state->scanner over to using the tables in this lexer file. */ state->start_state = xslashcmd; /* And lex. */ yylex(NULL, state->scanner); /* There are no possible errors in this lex state... */ /* * In case the caller returns to using the regular SQL lexer, reselect the * appropriate initial state. */ psql_scan_reselect_sql_lexer(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 last quote symbol used in the argument. * * 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 PG_USED_FOR_ASSERTS_ONLY; int final_state; char local_quote; /* Must be scanning already */ Assert(state->scanbufhandle != NULL); 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 */ option_type = type; option_quote = quote; unquoted_option_chars = 0; /* Set current output target */ state->output_buf = &mybuf; /* Set input source */ if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf, state->scanner); else yy_switch_to_buffer(state->scanbufhandle, state->scanner); /* Set lexer start state */ if (type == OT_WHOLE_LINE) state->start_state = xslashwholeline; else state->start_state = xslashargstart; /* And lex. */ lexresult = yylex(NULL, state->scanner); /* Save final state for a moment... */ final_state = state->start_state; /* * In case the caller returns to using the regular SQL lexer, reselect the * appropriate initial state. */ psql_scan_reselect_sql_lexer(state); /* * 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 final_state, EOL is an error. */ Assert(lexresult == LEXRES_EOL || lexresult == LEXRES_OK); switch (final_state) { case xslashargstart: /* empty arg */ break; case xslasharg: /* Strip any unquoted trailing semi-colons if requested */ if (semicolon) { while (unquoted_option_chars-- > 0 && 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 optionally downcase unquoted letters. */ if (type == OT_SQLID || type == OT_SQLIDHACK) { dequote_downcase_identifier(mybuf.data, (type != OT_SQLIDHACK), state->encoding); /* update mybuf.len for possible shortening */ mybuf.len = strlen(mybuf.data); } break; case xslashquote: case xslashbackquote: case xslashdquote: /* must have hit EOL inside quotes */ pg_log_error("unterminated quoted string"); termPQExpBuffer(&mybuf); return NULL; case xslashwholeline: /* always okay */ break; default: /* can't get here */ fprintf(stderr, "invalid YY_START\n"); exit(1); } /* * 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) { /* Must be scanning already */ Assert(state->scanbufhandle != NULL); /* Set current output target */ state->output_buf = NULL; /* we won't output anything */ /* Set input source */ if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf, state->scanner); else yy_switch_to_buffer(state->scanbufhandle, state->scanner); /* Set lexer start state */ state->start_state = xslashend; /* And lex. */ yylex(NULL, state->scanner); /* There are no possible errors in this lex state... */ /* * We expect the caller to return to using the regular SQL lexer, so * reselect the appropriate initial state. */ psql_scan_reselect_sql_lexer(state); } /* * Fetch current paren nesting depth */ int psql_scan_get_paren_depth(PsqlScanState state) { return state->paren_depth; } /* * Set paren nesting depth */ void psql_scan_set_paren_depth(PsqlScanState state, int depth) { Assert(depth >= 0); state->paren_depth = depth; } /* * De-quote and optionally downcase a SQL identifier. * * The string at *str is modified in-place; it can become shorter, * but not longer. * * If downcase is true then non-quoted letters are folded to lower case. * Ideally this behavior will match the backend's downcase_identifier(); * but note that it could differ if LC_CTYPE is different in the frontend. * * 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; this routine doesn't get to change the token boundaries. */ void dequote_downcase_identifier(char *str, bool downcase, int encoding) { bool inquotes = false; char *cp = str; while (*cp) { if (*cp == '"') { if (inquotes && cp[1] == '"') { /* Keep the first quote, remove the second */ cp++; } else inquotes = !inquotes; /* Collapse out quote at *cp */ memmove(cp, cp + 1, strlen(cp)); /* do not advance cp */ } else { if (downcase && !inquotes) *cp = pg_tolower((unsigned char) *cp); cp += PQmblenBounded(cp, encoding); } } } /* * Evaluate a backticked substring of a slash command's argument. * * The portion of output_buf starting at backtick_start_offset is evaluated * as a shell command and then replaced by the command's output. */ static void evaluate_backtick(PsqlScanState state) { PQExpBuffer output_buf = state->output_buf; char *cmd = output_buf->data + backtick_start_offset; PQExpBufferData cmd_output; FILE *fd; bool error = false; char buf[512]; size_t result; initPQExpBuffer(&cmd_output); fd = popen(cmd, "r"); if (!fd) { pg_log_error("%s: %m", cmd); error = true; } if (!error) { do { result = fread(buf, 1, sizeof(buf), fd); if (ferror(fd)) { pg_log_error("%s: %m", cmd); error = true; break; } appendBinaryPQExpBuffer(&cmd_output, buf, result); } while (!feof(fd)); } if (fd && pclose(fd) == -1) { pg_log_error("%s: %m", cmd); error = true; } if (PQExpBufferDataBroken(cmd_output)) { pg_log_error("%s: out of memory", cmd); error = true; } /* Now done with cmd, delete it from output_buf */ output_buf->len = backtick_start_offset; output_buf->data[output_buf->len] = '\0'; /* If no error, transfer result to output_buf */ if (!error) { /* strip any trailing newline (but only one) */ if (cmd_output.len > 0 && cmd_output.data[cmd_output.len - 1] == '\n') cmd_output.len--; appendBinaryPQExpBuffer(output_buf, cmd_output.data, cmd_output.len); } termPQExpBuffer(&cmd_output); }