diff options
Diffstat (limited to 'src/bin/psql/psqlscanslash.c')
| -rw-r--r-- | src/bin/psql/psqlscanslash.c | 3485 |
1 files changed, 3485 insertions, 0 deletions
diff --git a/src/bin/psql/psqlscanslash.c b/src/bin/psql/psqlscanslash.c new file mode 100644 index 0000000..515f215 --- /dev/null +++ b/src/bin/psql/psqlscanslash.c @@ -0,0 +1,3485 @@ +#line 2 "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) 1996-2022, 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 28 "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 <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> + +/* end standard C headers. */ + +/* flex integer type definitions */ + +#ifndef FLEXINT_H +#define FLEXINT_H + +/* C99 systems have <inttypes.h>. 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 <inttypes.h> +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 1197 "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 1213 "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 <unistd.h> +#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 1517 "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 2011 "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); +} + |