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-rw-r--r--src/backend/utils/misc/guc-file.c3230
1 files changed, 3230 insertions, 0 deletions
diff --git a/src/backend/utils/misc/guc-file.c b/src/backend/utils/misc/guc-file.c
new file mode 100644
index 0000000..0cea86f
--- /dev/null
+++ b/src/backend/utils/misc/guc-file.c
@@ -0,0 +1,3230 @@
+#line 2 "guc-file.c"
+
+#line 4 "guc-file.c"
+
+#define YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+#define yy_create_buffer GUC_yy_create_buffer
+#define yy_delete_buffer GUC_yy_delete_buffer
+#define yy_scan_buffer GUC_yy_scan_buffer
+#define yy_scan_string GUC_yy_scan_string
+#define yy_scan_bytes GUC_yy_scan_bytes
+#define yy_init_buffer GUC_yy_init_buffer
+#define yy_flush_buffer GUC_yy_flush_buffer
+#define yy_load_buffer_state GUC_yy_load_buffer_state
+#define yy_switch_to_buffer GUC_yy_switch_to_buffer
+#define yypush_buffer_state GUC_yypush_buffer_state
+#define yypop_buffer_state GUC_yypop_buffer_state
+#define yyensure_buffer_stack GUC_yyensure_buffer_stack
+#define yy_flex_debug GUC_yy_flex_debug
+#define yyin GUC_yyin
+#define yyleng GUC_yyleng
+#define yylex GUC_yylex
+#define yylineno GUC_yylineno
+#define yyout GUC_yyout
+#define yyrestart GUC_yyrestart
+#define yytext GUC_yytext
+#define yywrap GUC_yywrap
+#define yyalloc GUC_yyalloc
+#define yyrealloc GUC_yyrealloc
+#define yyfree GUC_yyfree
+
+#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 GUC_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer GUC_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define GUC_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer GUC_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define GUC_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer GUC_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define GUC_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string GUC_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define GUC_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes GUC_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define GUC_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer GUC_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define GUC_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer GUC_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define GUC_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state GUC_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define GUC_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer GUC_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define GUC_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state GUC_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define GUC_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state GUC_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define GUC_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack GUC_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define GUC_yylex_ALREADY_DEFINED
+#else
+#define yylex GUC_yylex
+#endif
+
+#ifdef yyrestart
+#define GUC_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart GUC_yyrestart
+#endif
+
+#ifdef yylex_init
+#define GUC_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init GUC_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define GUC_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra GUC_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define GUC_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy GUC_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define GUC_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug GUC_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define GUC_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug GUC_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define GUC_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra GUC_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define GUC_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra GUC_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define GUC_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in GUC_yyget_in
+#endif
+
+#ifdef yyset_in
+#define GUC_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in GUC_yyset_in
+#endif
+
+#ifdef yyget_out
+#define GUC_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out GUC_yyget_out
+#endif
+
+#ifdef yyset_out
+#define GUC_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out GUC_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define GUC_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng GUC_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define GUC_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text GUC_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define GUC_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno GUC_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define GUC_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno GUC_yyset_lineno
+#endif
+
+#ifdef yywrap
+#define GUC_yywrap_ALREADY_DEFINED
+#else
+#define yywrap GUC_yywrap
+#endif
+
+#ifdef yyalloc
+#define GUC_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc GUC_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define GUC_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc GUC_yyrealloc
+#endif
+
+#ifdef yyfree
+#define GUC_yyfree_ALREADY_DEFINED
+#else
+#define yyfree GUC_yyfree
+#endif
+
+#ifdef yytext
+#define GUC_yytext_ALREADY_DEFINED
+#else
+#define yytext GUC_yytext
+#endif
+
+#ifdef yyleng
+#define GUC_yyleng_ALREADY_DEFINED
+#else
+#define yyleng GUC_yyleng
+#endif
+
+#ifdef yyin
+#define GUC_yyin_ALREADY_DEFINED
+#else
+#define yyin GUC_yyin
+#endif
+
+#ifdef yyout
+#define GUC_yyout_ALREADY_DEFINED
+#else
+#define yyout GUC_yyout
+#endif
+
+#ifdef yy_flex_debug
+#define GUC_yy_flex_debug_ALREADY_DEFINED
+#else
+#define yy_flex_debug GUC_yy_flex_debug
+#endif
+
+#ifdef yylineno
+#define GUC_yylineno_ALREADY_DEFINED
+#else
+#define yylineno GUC_yylineno
+#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))
+
+/* Enter a start condition. This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN (yy_start) = 1 + 2 *
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state. The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START (((yy_start) - 1) / 2)
+#define YYSTATE YY_START
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart( yyin )
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#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
+
+extern int yyleng;
+
+extern FILE *yyin, *yyout;
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+ #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 = (yy_hold_char); \
+ YY_RESTORE_YY_MORE_OFFSET \
+ (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, (yytext_ptr) )
+
+#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 */
+
+/* Stack of input buffers. */
+static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
+static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
+static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */
+
+/* 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 ( (yy_buffer_stack) \
+ ? (yy_buffer_stack)[(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 (yy_buffer_stack)[(yy_buffer_stack_top)]
+
+/* yy_hold_char holds the character lost when yytext is formed. */
+static char yy_hold_char;
+static int yy_n_chars; /* number of characters read into yy_ch_buf */
+int yyleng;
+
+/* Points to current character in buffer. */
+static char *yy_c_buf_p = NULL;
+static int yy_init = 0; /* whether we need to initialize */
+static int yy_start = 0; /* start state number */
+
+/* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin. A bit of a hack ...
+ */
+static int yy_did_buffer_switch_on_eof;
+
+void yyrestart ( FILE *input_file );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size );
+void yy_delete_buffer ( YY_BUFFER_STATE b );
+void yy_flush_buffer ( YY_BUFFER_STATE b );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer );
+void yypop_buffer_state ( void );
+
+static void yyensure_buffer_stack ( void );
+static void yy_load_buffer_state ( void );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER )
+
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len );
+
+void *yyalloc ( yy_size_t );
+void *yyrealloc ( void *, yy_size_t );
+void yyfree ( void * );
+
+#define yy_new_buffer yy_create_buffer
+#define yy_set_interactive(is_interactive) \
+ { \
+ if ( ! YY_CURRENT_BUFFER ){ \
+ yyensure_buffer_stack (); \
+ YY_CURRENT_BUFFER_LVALUE = \
+ yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ } \
+ YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+ }
+#define yy_set_bol(at_bol) \
+ { \
+ if ( ! YY_CURRENT_BUFFER ){\
+ yyensure_buffer_stack (); \
+ YY_CURRENT_BUFFER_LVALUE = \
+ yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ } \
+ YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+ }
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* Begin user sect3 */
+
+#define GUC_yywrap() (/*CONSTCOND*/1)
+#define YY_SKIP_YYWRAP
+typedef flex_uint8_t YY_CHAR;
+
+FILE *yyin = NULL, *yyout = NULL;
+
+typedef int yy_state_type;
+
+extern int yylineno;
+int yylineno = 1;
+
+extern char *yytext;
+#ifdef yytext_ptr
+#undef yytext_ptr
+#endif
+#define yytext_ptr yytext
+
+static yy_state_type yy_get_previous_state ( void );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state );
+static int yy_get_next_buffer ( void );
+static void yynoreturn yy_fatal_error ( const char* msg );
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+ (yytext_ptr) = yy_bp; \
+ yyleng = (int) (yy_cp - yy_bp); \
+ (yy_hold_char) = *yy_cp; \
+ *yy_cp = '\0'; \
+ (yy_c_buf_p) = yy_cp;
+#define YY_NUM_RULES 12
+#define YY_END_OF_BUFFER 13
+/* 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[41] =
+ { 0,
+ 0, 0, 13, 11, 2, 1, 3, 11, 11, 9,
+ 8, 8, 10, 4, 2, 3, 0, 6, 0, 9,
+ 8, 8, 9, 0, 8, 8, 7, 7, 4, 4,
+ 0, 9, 8, 8, 7, 5, 5, 5, 5, 0
+ } ;
+
+static const YY_CHAR yy_ec[256] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
+ 1, 1, 2, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 2, 1, 1, 4, 1, 1, 1, 5, 1,
+ 1, 1, 6, 1, 7, 8, 9, 10, 11, 11,
+ 11, 11, 11, 11, 11, 11, 11, 9, 1, 1,
+ 12, 1, 1, 1, 13, 13, 13, 13, 14, 13,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 1, 16, 1, 1, 17, 1, 13, 13, 13, 13,
+
+ 14, 13, 15, 15, 15, 15, 15, 15, 15, 15,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 18,
+ 15, 15, 1, 1, 1, 1, 1, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+ 19, 19, 19, 19, 19
+ } ;
+
+static const YY_CHAR yy_meta[20] =
+ { 0,
+ 1, 1, 2, 1, 1, 1, 3, 3, 3, 4,
+ 4, 1, 5, 6, 5, 1, 3, 5, 3
+ } ;
+
+static const flex_int16_t yy_base[48] =
+ { 0,
+ 0, 0, 50, 148, 43, 148, 0, 15, 24, 30,
+ 28, 22, 148, 40, 35, 0, 17, 25, 0, 15,
+ 0, 10, 0, 52, 0, 54, 10, 66, 79, 0,
+ 13, 15, 0, 0, 4, 90, 101, 0, 0, 148,
+ 118, 124, 127, 131, 133, 137, 141
+ } ;
+
+static const flex_int16_t yy_def[48] =
+ { 0,
+ 40, 1, 40, 40, 40, 40, 41, 42, 40, 43,
+ 40, 11, 40, 44, 40, 41, 42, 40, 42, 43,
+ 11, 11, 20, 40, 45, 40, 46, 40, 44, 29,
+ 40, 40, 26, 26, 46, 47, 47, 37, 37, 0,
+ 40, 40, 40, 40, 40, 40, 40
+ } ;
+
+static const flex_int16_t yy_nxt[168] =
+ { 0,
+ 4, 5, 6, 7, 8, 9, 9, 10, 4, 11,
+ 12, 13, 14, 14, 14, 4, 14, 14, 14, 18,
+ 35, 18, 32, 32, 32, 32, 35, 25, 24, 17,
+ 19, 20, 19, 21, 22, 20, 15, 22, 22, 25,
+ 25, 25, 25, 24, 15, 26, 27, 28, 27, 40,
+ 40, 40, 40, 40, 40, 40, 30, 31, 31, 40,
+ 40, 32, 32, 33, 33, 40, 34, 34, 25, 40,
+ 40, 25, 27, 27, 27, 27, 27, 40, 36, 36,
+ 36, 40, 37, 36, 36, 27, 28, 27, 40, 40,
+ 40, 40, 40, 40, 40, 30, 27, 27, 27, 40,
+
+ 40, 40, 40, 40, 40, 40, 39, 27, 27, 27,
+ 40, 40, 40, 40, 40, 40, 40, 39, 16, 40,
+ 16, 16, 16, 16, 17, 40, 17, 17, 17, 17,
+ 23, 40, 23, 29, 29, 29, 29, 25, 25, 27,
+ 27, 27, 27, 38, 38, 38, 38, 3, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40
+ } ;
+
+static const flex_int16_t yy_chk[168] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 8,
+ 35, 17, 31, 31, 32, 32, 27, 22, 20, 18,
+ 8, 9, 17, 9, 9, 11, 15, 11, 11, 12,
+ 11, 11, 11, 10, 5, 11, 14, 14, 14, 3,
+ 0, 0, 0, 0, 0, 0, 14, 24, 24, 0,
+ 0, 24, 24, 26, 26, 0, 26, 26, 26, 0,
+ 0, 26, 28, 28, 28, 28, 28, 0, 28, 28,
+ 28, 0, 28, 28, 28, 29, 29, 29, 0, 0,
+ 0, 0, 0, 0, 0, 29, 36, 36, 36, 0,
+
+ 0, 0, 0, 0, 0, 0, 36, 37, 37, 37,
+ 0, 0, 0, 0, 0, 0, 0, 37, 41, 0,
+ 41, 41, 41, 41, 42, 0, 42, 42, 42, 42,
+ 43, 0, 43, 44, 44, 44, 44, 45, 45, 46,
+ 46, 46, 46, 47, 47, 47, 47, 40, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40
+ } ;
+
+static yy_state_type yy_last_accepting_state;
+static char *yy_last_accepting_cpos;
+
+extern int yy_flex_debug;
+int yy_flex_debug = 0;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+char *yytext;
+#line 1 "guc-file.l"
+/* -*-pgsql-c-*- */
+/*
+ * Scanner for the configuration file
+ *
+ * Copyright (c) 2000-2020, PostgreSQL Global Development Group
+ *
+ * src/backend/utils/misc/guc-file.l
+ */
+#line 11 "guc-file.l"
+
+#include "postgres.h"
+
+#include <ctype.h>
+#include <unistd.h>
+
+#include "mb/pg_wchar.h"
+#include "miscadmin.h"
+#include "storage/fd.h"
+#include "utils/guc.h"
+
+
+/*
+ * flex emits a yy_fatal_error() function that it calls in response to
+ * critical errors like malloc failure, file I/O errors, and detection of
+ * internal inconsistency. That function prints a message and calls exit().
+ * Mutate it to instead call our handler, which jumps out of the parser.
+ */
+#undef fprintf
+#define fprintf(file, fmt, msg) GUC_flex_fatal(msg)
+
+enum
+{
+ GUC_ID = 1,
+ GUC_STRING = 2,
+ GUC_INTEGER = 3,
+ GUC_REAL = 4,
+ GUC_EQUALS = 5,
+ GUC_UNQUOTED_STRING = 6,
+ GUC_QUALIFIED_ID = 7,
+ GUC_EOL = 99,
+ GUC_ERROR = 100
+};
+
+static unsigned int ConfigFileLineno;
+static const char *GUC_flex_fatal_errmsg;
+static sigjmp_buf *GUC_flex_fatal_jmp;
+
+static void FreeConfigVariable(ConfigVariable *item);
+
+static void record_config_file_error(const char *errmsg,
+ const char *config_file,
+ int lineno,
+ ConfigVariable **head_p,
+ ConfigVariable **tail_p);
+
+static int GUC_flex_fatal(const char *msg);
+static char *GUC_scanstr(const char *s);
+
+/* LCOV_EXCL_START */
+
+#line 810 "guc-file.c"
+#define YY_NO_INPUT 1
+#line 812 "guc-file.c"
+
+#define INITIAL 0
+
+#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
+
+static int yy_init_globals ( void );
+
+/* Accessor methods to globals.
+ These are made visible to non-reentrant scanners for convenience. */
+
+int yylex_destroy ( void );
+
+int yyget_debug ( void );
+
+void yyset_debug ( int debug_flag );
+
+YY_EXTRA_TYPE yyget_extra ( void );
+
+void yyset_extra ( YY_EXTRA_TYPE user_defined );
+
+FILE *yyget_in ( void );
+
+void yyset_in ( FILE * _in_str );
+
+FILE *yyget_out ( void );
+
+void yyset_out ( FILE * _out_str );
+
+ int yyget_leng ( void );
+
+char *yyget_text ( void );
+
+int yyget_lineno ( void );
+
+void yyset_lineno ( int _line_number );
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap ( void );
+#else
+extern int yywrap ( void );
+#endif
+#endif
+
+#ifndef YY_NO_UNPUT
+
+#endif
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy ( char *, const char *, int );
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen ( const char * );
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+static int yyinput ( void );
+#else
+static int input ( void );
+#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 )
+#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 (void);
+
+#define YY_DECL int yylex (void)
+#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;
+
+ if ( !(yy_init) )
+ {
+ (yy_init) = 1;
+
+#ifdef YY_USER_INIT
+ YY_USER_INIT;
+#endif
+
+ if ( ! (yy_start) )
+ (yy_start) = 1; /* first start state */
+
+ if ( ! yyin )
+ yyin = stdin;
+
+ if ( ! yyout )
+ yyout = stdout;
+
+ if ( ! YY_CURRENT_BUFFER ) {
+ yyensure_buffer_stack ();
+ YY_CURRENT_BUFFER_LVALUE =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+ }
+
+ yy_load_buffer_state( );
+ }
+
+ {
+#line 94 "guc-file.l"
+
+
+#line 1030 "guc-file.c"
+
+ while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */
+ {
+ yy_cp = (yy_c_buf_p);
+
+ /* Support of yytext. */
+ *yy_cp = (yy_hold_char);
+
+ /* yy_bp points to the position in yy_ch_buf of the start of
+ * the current run.
+ */
+ yy_bp = yy_cp;
+
+ yy_current_state = (yy_start);
+yy_match:
+ do
+ {
+ YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 41 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ ++yy_cp;
+ }
+ while ( yy_current_state != 40 );
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_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 0: /* must back up */
+ /* undo the effects of YY_DO_BEFORE_ACTION */
+ *yy_cp = (yy_hold_char);
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+ goto yy_find_action;
+
+case 1:
+/* rule 1 can match eol */
+YY_RULE_SETUP
+#line 96 "guc-file.l"
+ConfigFileLineno++; return GUC_EOL;
+ YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 97 "guc-file.l"
+/* eat whitespace */
+ YY_BREAK
+case 3:
+YY_RULE_SETUP
+#line 98 "guc-file.l"
+/* eat comment (.* matches anything until newline) */
+ YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 100 "guc-file.l"
+return GUC_ID;
+ YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 101 "guc-file.l"
+return GUC_QUALIFIED_ID;
+ YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 102 "guc-file.l"
+return GUC_STRING;
+ YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 103 "guc-file.l"
+return GUC_UNQUOTED_STRING;
+ YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 104 "guc-file.l"
+return GUC_INTEGER;
+ YY_BREAK
+case 9:
+YY_RULE_SETUP
+#line 105 "guc-file.l"
+return GUC_REAL;
+ YY_BREAK
+case 10:
+YY_RULE_SETUP
+#line 106 "guc-file.l"
+return GUC_EQUALS;
+ YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 108 "guc-file.l"
+return GUC_ERROR;
+ YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 110 "guc-file.l"
+YY_FATAL_ERROR( "flex scanner jammed" );
+ YY_BREAK
+#line 1144 "guc-file.c"
+case YY_STATE_EOF(INITIAL):
+ yyterminate();
+
+ case YY_END_OF_BUFFER:
+ {
+ /* Amount of text matched not including the EOB char. */
+ int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
+
+ /* Undo the effects of YY_DO_BEFORE_ACTION. */
+ *yy_cp = (yy_hold_char);
+ YY_RESTORE_YY_MORE_OFFSET
+
+ if ( YY_CURRENT_BUFFER_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.
+ */
+ (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 ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+ { /* This was really a NUL. */
+ yy_state_type yy_next_state;
+
+ (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state( );
+
+ /* Okay, we're now positioned to make the NUL
+ * transition. We couldn't have
+ * yy_get_previous_state() go ahead and do it
+ * for us because it doesn't know how to deal
+ * with the possibility of jamming (and we don't
+ * want to build jamming into it because then it
+ * will run more slowly).
+ */
+
+ yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+
+ if ( yy_next_state )
+ {
+ /* Consume the NUL. */
+ yy_cp = ++(yy_c_buf_p);
+ yy_current_state = yy_next_state;
+ goto yy_match;
+ }
+
+ else
+ {
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+ goto yy_find_action;
+ }
+ }
+
+ else switch ( yy_get_next_buffer( ) )
+ {
+ case EOB_ACT_END_OF_FILE:
+ {
+ (yy_did_buffer_switch_on_eof) = 0;
+
+ if ( yywrap( ) )
+ {
+ /* Note: because we've taken care in
+ * yy_get_next_buffer() to have set up
+ * yytext, we can now set up
+ * yy_c_buf_p so that if some total
+ * hoser (like flex itself) wants to
+ * call the scanner after we return the
+ * YY_NULL, it'll still work - another
+ * YY_NULL will get returned.
+ */
+ (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
+
+ yy_act = YY_STATE_EOF(YY_START);
+ goto do_action;
+ }
+
+ else
+ {
+ if ( ! (yy_did_buffer_switch_on_eof) )
+ YY_NEW_FILE;
+ }
+ break;
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ (yy_c_buf_p) =
+ (yytext_ptr) + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state( );
+
+ yy_cp = (yy_c_buf_p);
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+ goto yy_match;
+
+ case EOB_ACT_LAST_MATCH:
+ (yy_c_buf_p) =
+ &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
+
+ yy_current_state = yy_get_previous_state( );
+
+ yy_cp = (yy_c_buf_p);
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+ goto yy_find_action;
+ }
+ break;
+ }
+
+ default:
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--no action found" );
+ } /* end of action switch */
+ } /* end of scanning one token */
+ } /* end of 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 (void)
+{
+ char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+ char *source = (yytext_ptr);
+ int number_to_move, i;
+ int ret_val;
+
+ if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(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 ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
+ {
+ /* We matched a single character, the EOB, so
+ * treat this as a final EOF.
+ */
+ return EOB_ACT_END_OF_FILE;
+ }
+
+ else
+ {
+ /* We matched some text prior to the EOB, first
+ * process it.
+ */
+ return EOB_ACT_LAST_MATCH;
+ }
+ }
+
+ /* Try to read more data. */
+
+ /* First move last chars to start of buffer. */
+ number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr) - 1);
+
+ for ( i = 0; i < number_to_move; ++i )
+ *(dest++) = *(source++);
+
+ if ( YY_CURRENT_BUFFER_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 = (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) ((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) );
+ }
+ 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" );
+
+ (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]),
+ (yy_n_chars), num_to_read );
+
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ if ( (yy_n_chars) == 0 )
+ {
+ if ( number_to_move == YY_MORE_ADJ )
+ {
+ ret_val = EOB_ACT_END_OF_FILE;
+ yyrestart( yyin );
+ }
+
+ else
+ {
+ ret_val = EOB_ACT_LAST_MATCH;
+ YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+ YY_BUFFER_EOF_PENDING;
+ }
+ }
+
+ else
+ ret_val = EOB_ACT_CONTINUE_SCAN;
+
+ if (((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 = (yy_n_chars) + number_to_move + ((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 );
+ 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);
+ }
+
+ (yy_n_chars) += number_to_move;
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
+
+ (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 (void)
+{
+ yy_state_type yy_current_state;
+ char *yy_cp;
+
+ yy_current_state = (yy_start);
+
+ for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
+ {
+ YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 41 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ }
+
+ 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 )
+{
+ int yy_is_jam;
+ char *yy_cp = (yy_c_buf_p);
+
+ YY_CHAR yy_c = 1;
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 41 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ yy_is_jam = (yy_current_state == 40);
+
+ return yy_is_jam ? 0 : yy_current_state;
+}
+
+#ifndef YY_NO_UNPUT
+
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+ static int yyinput (void)
+#else
+ static int input (void)
+#endif
+
+{
+ int c;
+
+ *(yy_c_buf_p) = (yy_hold_char);
+
+ if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
+ {
+ /* yy_c_buf_p now points to the character we want to return.
+ * If this occurs *before* the EOB characters, then it's a
+ * valid NUL; if not, then we've hit the end of the buffer.
+ */
+ if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+ /* This was really a NUL. */
+ *(yy_c_buf_p) = '\0';
+
+ else
+ { /* need more input */
+ int offset = (int) ((yy_c_buf_p) - (yytext_ptr));
+ ++(yy_c_buf_p);
+
+ switch ( yy_get_next_buffer( ) )
+ {
+ case EOB_ACT_LAST_MATCH:
+ /* This happens because yy_g_n_b()
+ * sees that we've accumulated a
+ * token and flags that we need to
+ * try matching the token before
+ * proceeding. But for input(),
+ * there's no matching to consider.
+ * So convert the EOB_ACT_LAST_MATCH
+ * to EOB_ACT_END_OF_FILE.
+ */
+
+ /* Reset buffer status. */
+ yyrestart( yyin );
+
+ /*FALLTHROUGH*/
+
+ case EOB_ACT_END_OF_FILE:
+ {
+ if ( yywrap( ) )
+ return 0;
+
+ if ( ! (yy_did_buffer_switch_on_eof) )
+ YY_NEW_FILE;
+#ifdef __cplusplus
+ return yyinput();
+#else
+ return input();
+#endif
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ (yy_c_buf_p) = (yytext_ptr) + offset;
+ break;
+ }
+ }
+ }
+
+ c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */
+ *(yy_c_buf_p) = '\0'; /* preserve yytext */
+ (yy_hold_char) = *++(yy_c_buf_p);
+
+ return c;
+}
+#endif /* ifndef YY_NO_INPUT */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ *
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+ void yyrestart (FILE * input_file )
+{
+
+ if ( ! YY_CURRENT_BUFFER ){
+ yyensure_buffer_stack ();
+ YY_CURRENT_BUFFER_LVALUE =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+ }
+
+ yy_init_buffer( YY_CURRENT_BUFFER, input_file );
+ yy_load_buffer_state( );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ *
+ */
+ void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer )
+{
+
+ /* TODO. We should be able to replace this entire function body
+ * with
+ * yypop_buffer_state();
+ * yypush_buffer_state(new_buffer);
+ */
+ yyensure_buffer_stack ();
+ if ( YY_CURRENT_BUFFER == new_buffer )
+ return;
+
+ if ( YY_CURRENT_BUFFER )
+ {
+ /* Flush out information for old buffer. */
+ *(yy_c_buf_p) = (yy_hold_char);
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ YY_CURRENT_BUFFER_LVALUE = new_buffer;
+ yy_load_buffer_state( );
+
+ /* We don't actually know whether we did this switch during
+ * EOF (yywrap()) processing, but the only time this flag
+ * is looked at is after yywrap() is called, so it's safe
+ * to go ahead and always set it.
+ */
+ (yy_did_buffer_switch_on_eof) = 1;
+}
+
+static void yy_load_buffer_state (void)
+{
+ (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+ (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+ yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+ (yy_hold_char) = *(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.
+ *
+ * @return the allocated buffer state.
+ */
+ YY_BUFFER_STATE yy_create_buffer (FILE * file, int size )
+{
+ YY_BUFFER_STATE b;
+
+ b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_buf_size = size;
+
+ /* yy_ch_buf has to be 2 characters longer than the size given because
+ * we need to put in 2 end-of-buffer characters.
+ */
+ b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) );
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_is_our_buffer = 1;
+
+ yy_init_buffer( b, file );
+
+ return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with yy_create_buffer()
+ *
+ */
+ void yy_delete_buffer (YY_BUFFER_STATE b )
+{
+
+ 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 );
+
+ yyfree( (void *) b );
+}
+
+/* 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 )
+
+{
+ int oerrno = errno;
+
+ yy_flush_buffer( b );
+
+ 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.
+ *
+ */
+ void yy_flush_buffer (YY_BUFFER_STATE b )
+{
+ 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( );
+}
+
+/** 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.
+ *
+ */
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
+{
+ if (new_buffer == NULL)
+ return;
+
+ yyensure_buffer_stack();
+
+ /* This block is copied from yy_switch_to_buffer. */
+ if ( YY_CURRENT_BUFFER )
+ {
+ /* Flush out information for old buffer. */
+ *(yy_c_buf_p) = (yy_hold_char);
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ /* Only push if top exists. Otherwise, replace top. */
+ if (YY_CURRENT_BUFFER)
+ (yy_buffer_stack_top)++;
+ YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+ /* copied from yy_switch_to_buffer. */
+ yy_load_buffer_state( );
+ (yy_did_buffer_switch_on_eof) = 1;
+}
+
+/** Removes and deletes the top of the stack, if present.
+ * The next element becomes the new top.
+ *
+ */
+void yypop_buffer_state (void)
+{
+ if (!YY_CURRENT_BUFFER)
+ return;
+
+ yy_delete_buffer(YY_CURRENT_BUFFER );
+ YY_CURRENT_BUFFER_LVALUE = NULL;
+ if ((yy_buffer_stack_top) > 0)
+ --(yy_buffer_stack_top);
+
+ if (YY_CURRENT_BUFFER) {
+ yy_load_buffer_state( );
+ (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 (void)
+{
+ yy_size_t num_to_alloc;
+
+ if (!(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... */
+ (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
+ (num_to_alloc * sizeof(struct yy_buffer_state*)
+ );
+ if ( ! (yy_buffer_stack) )
+ YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+ memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+
+ (yy_buffer_stack_max) = num_to_alloc;
+ (yy_buffer_stack_top) = 0;
+ return;
+ }
+
+ if ((yy_buffer_stack_top) >= ((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 = (yy_buffer_stack_max) + grow_size;
+ (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
+ ((yy_buffer_stack),
+ num_to_alloc * sizeof(struct yy_buffer_state*)
+ );
+ if ( ! (yy_buffer_stack) )
+ YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+ /* zero only the new slots.*/
+ memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
+ (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
+ *
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size )
+{
+ 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 ) );
+ 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 );
+
+ 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
+ *
+ * @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 )
+{
+
+ return yy_scan_bytes( yystr, (int) strlen(yystr) );
+}
+
+/** 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.
+ *
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_bytes (const char * yybytes, int _yybytes_len )
+{
+ 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 );
+ 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 );
+ 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 )
+{
+ 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] = (yy_hold_char); \
+ (yy_c_buf_p) = yytext + yyless_macro_arg; \
+ (yy_hold_char) = *(yy_c_buf_p); \
+ *(yy_c_buf_p) = '\0'; \
+ yyleng = yyless_macro_arg; \
+ } \
+ while ( 0 )
+
+/* Accessor methods (get/set functions) to struct members. */
+
+/** Get the current line number.
+ *
+ */
+int yyget_lineno (void)
+{
+
+ return yylineno;
+}
+
+/** Get the input stream.
+ *
+ */
+FILE *yyget_in (void)
+{
+ return yyin;
+}
+
+/** Get the output stream.
+ *
+ */
+FILE *yyget_out (void)
+{
+ return yyout;
+}
+
+/** Get the length of the current token.
+ *
+ */
+int yyget_leng (void)
+{
+ return yyleng;
+}
+
+/** Get the current token.
+ *
+ */
+
+char *yyget_text (void)
+{
+ return yytext;
+}
+
+/** Set the current line number.
+ * @param _line_number line number
+ *
+ */
+void yyset_lineno (int _line_number )
+{
+
+ yylineno = _line_number;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param _in_str A readable stream.
+ *
+ * @see yy_switch_to_buffer
+ */
+void yyset_in (FILE * _in_str )
+{
+ yyin = _in_str ;
+}
+
+void yyset_out (FILE * _out_str )
+{
+ yyout = _out_str ;
+}
+
+int yyget_debug (void)
+{
+ return yy_flex_debug;
+}
+
+void yyset_debug (int _bdebug )
+{
+ yy_flex_debug = _bdebug ;
+}
+
+static int yy_init_globals (void)
+{
+ /* Initialization is the same as for the non-reentrant scanner.
+ * This function is called from yylex_destroy(), so don't allocate here.
+ */
+
+ (yy_buffer_stack) = NULL;
+ (yy_buffer_stack_top) = 0;
+ (yy_buffer_stack_max) = 0;
+ (yy_c_buf_p) = NULL;
+ (yy_init) = 0;
+ (yy_start) = 0;
+
+/* 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 (void)
+{
+
+ /* Pop the buffer stack, destroying each element. */
+ while(YY_CURRENT_BUFFER){
+ yy_delete_buffer( YY_CURRENT_BUFFER );
+ YY_CURRENT_BUFFER_LVALUE = NULL;
+ yypop_buffer_state();
+ }
+
+ /* Destroy the stack itself. */
+ yyfree((yy_buffer_stack) );
+ (yy_buffer_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( );
+
+ return 0;
+}
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, const char * s2, int n )
+{
+
+ 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 )
+{
+ int n;
+ for ( n = 0; s[n]; ++n )
+ ;
+
+ return n;
+}
+#endif
+
+void *yyalloc (yy_size_t size )
+{
+ return malloc(size);
+}
+
+void *yyrealloc (void * ptr, yy_size_t size )
+{
+
+ /* 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 )
+{
+ free( (char *) ptr ); /* see yyrealloc() for (char *) cast */
+}
+
+#define YYTABLES_NAME "yytables"
+
+#line 110 "guc-file.l"
+
+
+/* LCOV_EXCL_STOP */
+
+/*
+ * Exported function to read and process the configuration file. The
+ * parameter indicates in what context the file is being read --- either
+ * postmaster startup (including standalone-backend startup) or SIGHUP.
+ * All options mentioned in the configuration file are set to new values.
+ * If a hard error occurs, no values will be changed. (There can also be
+ * errors that prevent just one value from being changed.)
+ */
+void
+ProcessConfigFile(GucContext context)
+{
+ int elevel;
+ MemoryContext config_cxt;
+ MemoryContext caller_cxt;
+
+ /*
+ * Config files are processed on startup (by the postmaster only) and on
+ * SIGHUP (by the postmaster and its children)
+ */
+ Assert((context == PGC_POSTMASTER && !IsUnderPostmaster) ||
+ context == PGC_SIGHUP);
+
+ /*
+ * To avoid cluttering the log, only the postmaster bleats loudly about
+ * problems with the config file.
+ */
+ elevel = IsUnderPostmaster ? DEBUG2 : LOG;
+
+ /*
+ * This function is usually called within a process-lifespan memory
+ * context. To ensure that any memory leaked during GUC processing does
+ * not accumulate across repeated SIGHUP cycles, do the work in a private
+ * context that we can free at exit.
+ */
+ config_cxt = AllocSetContextCreate(CurrentMemoryContext,
+ "config file processing",
+ ALLOCSET_DEFAULT_SIZES);
+ caller_cxt = MemoryContextSwitchTo(config_cxt);
+
+ /*
+ * Read and apply the config file. We don't need to examine the result.
+ */
+ (void) ProcessConfigFileInternal(context, true, elevel);
+
+ /* Clean up */
+ MemoryContextSwitchTo(caller_cxt);
+ MemoryContextDelete(config_cxt);
+}
+
+/*
+ * This function handles both actual config file (re)loads and execution of
+ * show_all_file_settings() (i.e., the pg_file_settings view). In the latter
+ * case we don't apply any of the settings, but we make all the usual validity
+ * checks, and we return the ConfigVariable list so that it can be printed out
+ * by show_all_file_settings().
+ */
+static ConfigVariable *
+ProcessConfigFileInternal(GucContext context, bool applySettings, int elevel)
+{
+ bool error = false;
+ bool applying = false;
+ const char *ConfFileWithError;
+ ConfigVariable *item,
+ *head,
+ *tail;
+ int i;
+
+ /* Parse the main config file into a list of option names and values */
+ ConfFileWithError = ConfigFileName;
+ head = tail = NULL;
+
+ if (!ParseConfigFile(ConfigFileName, true,
+ NULL, 0, 0, elevel,
+ &head, &tail))
+ {
+ /* Syntax error(s) detected in the file, so bail out */
+ error = true;
+ goto bail_out;
+ }
+
+ /*
+ * Parse the PG_AUTOCONF_FILENAME file, if present, after the main file to
+ * replace any parameters set by ALTER SYSTEM command. Because this file
+ * is in the data directory, we can't read it until the DataDir has been
+ * set.
+ */
+ if (DataDir)
+ {
+ if (!ParseConfigFile(PG_AUTOCONF_FILENAME, false,
+ NULL, 0, 0, elevel,
+ &head, &tail))
+ {
+ /* Syntax error(s) detected in the file, so bail out */
+ error = true;
+ ConfFileWithError = PG_AUTOCONF_FILENAME;
+ goto bail_out;
+ }
+ }
+ else
+ {
+ /*
+ * If DataDir is not set, the PG_AUTOCONF_FILENAME file cannot be
+ * read. In this case, we don't want to accept any settings but
+ * data_directory from postgresql.conf, because they might be
+ * overwritten with settings in the PG_AUTOCONF_FILENAME file which
+ * will be read later. OTOH, since data_directory isn't allowed in the
+ * PG_AUTOCONF_FILENAME file, it will never be overwritten later.
+ */
+ ConfigVariable *newlist = NULL;
+
+ /*
+ * Prune all items except the last "data_directory" from the list.
+ */
+ for (item = head; item; item = item->next)
+ {
+ if (!item->ignore &&
+ strcmp(item->name, "data_directory") == 0)
+ newlist = item;
+ }
+
+ if (newlist)
+ newlist->next = NULL;
+ head = tail = newlist;
+
+ /*
+ * Quick exit if data_directory is not present in file.
+ *
+ * We need not do any further processing, in particular we don't set
+ * PgReloadTime; that will be set soon by subsequent full loading of
+ * the config file.
+ */
+ if (head == NULL)
+ goto bail_out;
+ }
+
+ /*
+ * Mark all extant GUC variables as not present in the config file. We
+ * need this so that we can tell below which ones have been removed from
+ * the file since we last processed it.
+ */
+ for (i = 0; i < num_guc_variables; i++)
+ {
+ struct config_generic *gconf = guc_variables[i];
+
+ gconf->status &= ~GUC_IS_IN_FILE;
+ }
+
+ /*
+ * Check if all the supplied option names are valid, as an additional
+ * quasi-syntactic check on the validity of the config file. It is
+ * important that the postmaster and all backends agree on the results of
+ * this phase, else we will have strange inconsistencies about which
+ * processes accept a config file update and which don't. Hence, unknown
+ * custom variable names have to be accepted without complaint. For the
+ * same reason, we don't attempt to validate the options' values here.
+ *
+ * In addition, the GUC_IS_IN_FILE flag is set on each existing GUC
+ * variable mentioned in the file; and we detect duplicate entries in the
+ * file and mark the earlier occurrences as ignorable.
+ */
+ for (item = head; item; item = item->next)
+ {
+ struct config_generic *record;
+
+ /* Ignore anything already marked as ignorable */
+ if (item->ignore)
+ continue;
+
+ /*
+ * Try to find the variable; but do not create a custom placeholder if
+ * it's not there already.
+ */
+ record = find_option(item->name, false, elevel);
+
+ if (record)
+ {
+ /* If it's already marked, then this is a duplicate entry */
+ if (record->status & GUC_IS_IN_FILE)
+ {
+ /*
+ * Mark the earlier occurrence(s) as dead/ignorable. We could
+ * avoid the O(N^2) behavior here with some additional state,
+ * but it seems unlikely to be worth the trouble.
+ */
+ ConfigVariable *pitem;
+
+ for (pitem = head; pitem != item; pitem = pitem->next)
+ {
+ if (!pitem->ignore &&
+ strcmp(pitem->name, item->name) == 0)
+ pitem->ignore = true;
+ }
+ }
+ /* Now mark it as present in file */
+ record->status |= GUC_IS_IN_FILE;
+ }
+ else if (strchr(item->name, GUC_QUALIFIER_SEPARATOR) == NULL)
+ {
+ /* Invalid non-custom variable, so complain */
+ ereport(elevel,
+ (errcode(ERRCODE_UNDEFINED_OBJECT),
+ errmsg("unrecognized configuration parameter \"%s\" in file \"%s\" line %u",
+ item->name,
+ item->filename, item->sourceline)));
+ item->errmsg = pstrdup("unrecognized configuration parameter");
+ error = true;
+ ConfFileWithError = item->filename;
+ }
+ }
+
+ /*
+ * If we've detected any errors so far, we don't want to risk applying any
+ * changes.
+ */
+ if (error)
+ goto bail_out;
+
+ /* Otherwise, set flag that we're beginning to apply changes */
+ applying = true;
+
+ /*
+ * Check for variables having been removed from the config file, and
+ * revert their reset values (and perhaps also effective values) to the
+ * boot-time defaults. If such a variable can't be changed after startup,
+ * report that and continue.
+ */
+ for (i = 0; i < num_guc_variables; i++)
+ {
+ struct config_generic *gconf = guc_variables[i];
+ GucStack *stack;
+
+ if (gconf->reset_source != PGC_S_FILE ||
+ (gconf->status & GUC_IS_IN_FILE))
+ continue;
+ if (gconf->context < PGC_SIGHUP)
+ {
+ /* The removal can't be effective without a restart */
+ gconf->status |= GUC_PENDING_RESTART;
+ ereport(elevel,
+ (errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
+ errmsg("parameter \"%s\" cannot be changed without restarting the server",
+ gconf->name)));
+ record_config_file_error(psprintf("parameter \"%s\" cannot be changed without restarting the server",
+ gconf->name),
+ NULL, 0,
+ &head, &tail);
+ error = true;
+ continue;
+ }
+
+ /* No more to do if we're just doing show_all_file_settings() */
+ if (!applySettings)
+ continue;
+
+ /*
+ * Reset any "file" sources to "default", else set_config_option will
+ * not override those settings.
+ */
+ if (gconf->reset_source == PGC_S_FILE)
+ gconf->reset_source = PGC_S_DEFAULT;
+ if (gconf->source == PGC_S_FILE)
+ gconf->source = PGC_S_DEFAULT;
+ for (stack = gconf->stack; stack; stack = stack->prev)
+ {
+ if (stack->source == PGC_S_FILE)
+ stack->source = PGC_S_DEFAULT;
+ }
+
+ /* Now we can re-apply the wired-in default (i.e., the boot_val) */
+ if (set_config_option(gconf->name, NULL,
+ context, PGC_S_DEFAULT,
+ GUC_ACTION_SET, true, 0, false) > 0)
+ {
+ /* Log the change if appropriate */
+ if (context == PGC_SIGHUP)
+ ereport(elevel,
+ (errmsg("parameter \"%s\" removed from configuration file, reset to default",
+ gconf->name)));
+ }
+ }
+
+ /*
+ * Restore any variables determined by environment variables or
+ * dynamically-computed defaults. This is a no-op except in the case
+ * where one of these had been in the config file and is now removed.
+ *
+ * In particular, we *must not* do this during the postmaster's initial
+ * loading of the file, since the timezone functions in particular should
+ * be run only after initialization is complete.
+ *
+ * XXX this is an unmaintainable crock, because we have to know how to set
+ * (or at least what to call to set) every variable that could potentially
+ * have PGC_S_DYNAMIC_DEFAULT or PGC_S_ENV_VAR source. However, there's no
+ * time to redesign it for 9.1.
+ */
+ if (context == PGC_SIGHUP && applySettings)
+ {
+ InitializeGUCOptionsFromEnvironment();
+ pg_timezone_abbrev_initialize();
+ /* this selects SQL_ASCII in processes not connected to a database */
+ SetConfigOption("client_encoding", GetDatabaseEncodingName(),
+ PGC_BACKEND, PGC_S_DYNAMIC_DEFAULT);
+ }
+
+ /*
+ * Now apply the values from the config file.
+ */
+ for (item = head; item; item = item->next)
+ {
+ char *pre_value = NULL;
+ int scres;
+
+ /* Ignore anything marked as ignorable */
+ if (item->ignore)
+ continue;
+
+ /* In SIGHUP cases in the postmaster, we want to report changes */
+ if (context == PGC_SIGHUP && applySettings && !IsUnderPostmaster)
+ {
+ const char *preval = GetConfigOption(item->name, true, false);
+
+ /* If option doesn't exist yet or is NULL, treat as empty string */
+ if (!preval)
+ preval = "";
+ /* must dup, else might have dangling pointer below */
+ pre_value = pstrdup(preval);
+ }
+
+ scres = set_config_option(item->name, item->value,
+ context, PGC_S_FILE,
+ GUC_ACTION_SET, applySettings, 0, false);
+ if (scres > 0)
+ {
+ /* variable was updated, so log the change if appropriate */
+ if (pre_value)
+ {
+ const char *post_value = GetConfigOption(item->name, true, false);
+
+ if (!post_value)
+ post_value = "";
+ if (strcmp(pre_value, post_value) != 0)
+ ereport(elevel,
+ (errmsg("parameter \"%s\" changed to \"%s\"",
+ item->name, item->value)));
+ }
+ item->applied = true;
+ }
+ else if (scres == 0)
+ {
+ error = true;
+ item->errmsg = pstrdup("setting could not be applied");
+ ConfFileWithError = item->filename;
+ }
+ else
+ {
+ /* no error, but variable's active value was not changed */
+ item->applied = true;
+ }
+
+ /*
+ * We should update source location unless there was an error, since
+ * even if the active value didn't change, the reset value might have.
+ * (In the postmaster, there won't be a difference, but it does matter
+ * in backends.)
+ */
+ if (scres != 0 && applySettings)
+ set_config_sourcefile(item->name, item->filename,
+ item->sourceline);
+
+ if (pre_value)
+ pfree(pre_value);
+ }
+
+ /* Remember when we last successfully loaded the config file. */
+ if (applySettings)
+ PgReloadTime = GetCurrentTimestamp();
+
+bail_out:
+ if (error && applySettings)
+ {
+ /* During postmaster startup, any error is fatal */
+ if (context == PGC_POSTMASTER)
+ ereport(ERROR,
+ (errcode(ERRCODE_CONFIG_FILE_ERROR),
+ errmsg("configuration file \"%s\" contains errors",
+ ConfFileWithError)));
+ else if (applying)
+ ereport(elevel,
+ (errcode(ERRCODE_CONFIG_FILE_ERROR),
+ errmsg("configuration file \"%s\" contains errors; unaffected changes were applied",
+ ConfFileWithError)));
+ else
+ ereport(elevel,
+ (errcode(ERRCODE_CONFIG_FILE_ERROR),
+ errmsg("configuration file \"%s\" contains errors; no changes were applied",
+ ConfFileWithError)));
+ }
+
+ /* Successful or otherwise, return the collected data list */
+ return head;
+}
+
+/*
+ * Given a configuration file or directory location that may be a relative
+ * path, return an absolute one. We consider the location to be relative to
+ * the directory holding the calling file, or to DataDir if no calling file.
+ */
+static char *
+AbsoluteConfigLocation(const char *location, const char *calling_file)
+{
+ char abs_path[MAXPGPATH];
+
+ if (is_absolute_path(location))
+ return pstrdup(location);
+ else
+ {
+ if (calling_file != NULL)
+ {
+ strlcpy(abs_path, calling_file, sizeof(abs_path));
+ get_parent_directory(abs_path);
+ join_path_components(abs_path, abs_path, location);
+ canonicalize_path(abs_path);
+ }
+ else
+ {
+ AssertState(DataDir);
+ join_path_components(abs_path, DataDir, location);
+ canonicalize_path(abs_path);
+ }
+ return pstrdup(abs_path);
+ }
+}
+
+/*
+ * Read and parse a single configuration file. This function recurses
+ * to handle "include" directives.
+ *
+ * If "strict" is true, treat failure to open the config file as an error,
+ * otherwise just skip the file.
+ *
+ * calling_file/calling_lineno identify the source of the request.
+ * Pass NULL/0 if not recursing from an inclusion request.
+ *
+ * See ParseConfigFp for further details. This one merely adds opening the
+ * config file rather than working from a caller-supplied file descriptor,
+ * and absolute-ifying the path name if necessary.
+ */
+bool
+ParseConfigFile(const char *config_file, bool strict,
+ const char *calling_file, int calling_lineno,
+ int depth, int elevel,
+ ConfigVariable **head_p,
+ ConfigVariable **tail_p)
+{
+ char *abs_path;
+ bool OK = true;
+ FILE *fp;
+
+ /*
+ * Reject file name that is all-blank (including empty), as that leads to
+ * confusion --- we'd try to read the containing directory as a file.
+ */
+ if (strspn(config_file, " \t\r\n") == strlen(config_file))
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("empty configuration file name: \"%s\"",
+ config_file)));
+ record_config_file_error("empty configuration file name",
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ return false;
+ }
+
+ /*
+ * Reject too-deep include nesting depth. This is just a safety check to
+ * avoid dumping core due to stack overflow if an include file loops back
+ * to itself. The maximum nesting depth is pretty arbitrary.
+ */
+ if (depth > 10)
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+ errmsg("could not open configuration file \"%s\": maximum nesting depth exceeded",
+ config_file)));
+ record_config_file_error("nesting depth exceeded",
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ return false;
+ }
+
+ abs_path = AbsoluteConfigLocation(config_file, calling_file);
+
+ /*
+ * Reject direct recursion. Indirect recursion is also possible, but it's
+ * harder to detect and so doesn't seem worth the trouble. (We test at
+ * this step because the canonicalization done by AbsoluteConfigLocation
+ * makes it more likely that a simple strcmp comparison will match.)
+ */
+ if (calling_file && strcmp(abs_path, calling_file) == 0)
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("configuration file recursion in \"%s\"",
+ calling_file)));
+ record_config_file_error("configuration file recursion",
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ pfree(abs_path);
+ return false;
+ }
+
+ fp = AllocateFile(abs_path, "r");
+ if (!fp)
+ {
+ if (strict)
+ {
+ ereport(elevel,
+ (errcode_for_file_access(),
+ errmsg("could not open configuration file \"%s\": %m",
+ abs_path)));
+ record_config_file_error(psprintf("could not open file \"%s\"",
+ abs_path),
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ OK = false;
+ }
+ else
+ {
+ ereport(LOG,
+ (errmsg("skipping missing configuration file \"%s\"",
+ abs_path)));
+ }
+ goto cleanup;
+ }
+
+ OK = ParseConfigFp(fp, abs_path, depth, elevel, head_p, tail_p);
+
+cleanup:
+ if (fp)
+ FreeFile(fp);
+ pfree(abs_path);
+
+ return OK;
+}
+
+/*
+ * Capture an error message in the ConfigVariable list returned by
+ * config file parsing.
+ */
+static void
+record_config_file_error(const char *errmsg,
+ const char *config_file,
+ int lineno,
+ ConfigVariable **head_p,
+ ConfigVariable **tail_p)
+{
+ ConfigVariable *item;
+
+ item = palloc(sizeof *item);
+ item->name = NULL;
+ item->value = NULL;
+ item->errmsg = pstrdup(errmsg);
+ item->filename = config_file ? pstrdup(config_file) : NULL;
+ item->sourceline = lineno;
+ item->ignore = true;
+ item->applied = false;
+ item->next = NULL;
+ if (*head_p == NULL)
+ *head_p = item;
+ else
+ (*tail_p)->next = item;
+ *tail_p = item;
+}
+
+/*
+ * Flex fatal errors bring us here. Stash the error message and jump back to
+ * ParseConfigFp(). Assume all msg arguments point to string constants; this
+ * holds for flex 2.5.31 (earliest we support) and flex 2.5.35 (latest as of
+ * this writing). Otherwise, we would need to copy the message.
+ *
+ * We return "int" since this takes the place of calls to fprintf().
+*/
+static int
+GUC_flex_fatal(const char *msg)
+{
+ GUC_flex_fatal_errmsg = msg;
+ siglongjmp(*GUC_flex_fatal_jmp, 1);
+ return 0; /* keep compiler quiet */
+}
+
+/*
+ * Read and parse a single configuration file. This function recurses
+ * to handle "include" directives.
+ *
+ * Input parameters:
+ * fp: file pointer from AllocateFile for the configuration file to parse
+ * config_file: absolute or relative path name of the configuration file
+ * depth: recursion depth (should be 0 in the outermost call)
+ * elevel: error logging level to use
+ * Input/Output parameters:
+ * head_p, tail_p: head and tail of linked list of name/value pairs
+ *
+ * *head_p and *tail_p must be initialized, either to NULL or valid pointers
+ * to a ConfigVariable list, before calling the outer recursion level. Any
+ * name-value pairs read from the input file(s) will be appended to the list.
+ * Error reports will also be appended to the list, if elevel < ERROR.
+ *
+ * Returns TRUE if successful, FALSE if an error occurred. The error has
+ * already been ereport'd, it is only necessary for the caller to clean up
+ * its own state and release the ConfigVariable list.
+ *
+ * Note: if elevel >= ERROR then an error will not return control to the
+ * caller, so there is no need to check the return value in that case.
+ *
+ * Note: this function is used to parse not only postgresql.conf, but
+ * various other configuration files that use the same "name = value"
+ * syntax. Hence, do not do anything here or in the subsidiary routines
+ * ParseConfigFile/ParseConfigDirectory that assumes we are processing
+ * GUCs specifically.
+ */
+bool
+ParseConfigFp(FILE *fp, const char *config_file, int depth, int elevel,
+ ConfigVariable **head_p, ConfigVariable **tail_p)
+{
+ volatile bool OK = true;
+ unsigned int save_ConfigFileLineno = ConfigFileLineno;
+ sigjmp_buf *save_GUC_flex_fatal_jmp = GUC_flex_fatal_jmp;
+ sigjmp_buf flex_fatal_jmp;
+ volatile YY_BUFFER_STATE lex_buffer = NULL;
+ int errorcount;
+ int token;
+
+ if (sigsetjmp(flex_fatal_jmp, 1) == 0)
+ GUC_flex_fatal_jmp = &flex_fatal_jmp;
+ else
+ {
+ /*
+ * Regain control after a fatal, internal flex error. It may have
+ * corrupted parser state. Consequently, abandon the file, but trust
+ * that the state remains sane enough for yy_delete_buffer().
+ */
+ elog(elevel, "%s at file \"%s\" line %u",
+ GUC_flex_fatal_errmsg, config_file, ConfigFileLineno);
+ record_config_file_error(GUC_flex_fatal_errmsg,
+ config_file, ConfigFileLineno,
+ head_p, tail_p);
+ OK = false;
+ goto cleanup;
+ }
+
+ /*
+ * Parse
+ */
+ ConfigFileLineno = 1;
+ errorcount = 0;
+
+ lex_buffer = yy_create_buffer(fp, YY_BUF_SIZE);
+ yy_switch_to_buffer(lex_buffer);
+
+ /* This loop iterates once per logical line */
+ while ((token = yylex()))
+ {
+ char *opt_name = NULL;
+ char *opt_value = NULL;
+ ConfigVariable *item;
+
+ if (token == GUC_EOL) /* empty or comment line */
+ continue;
+
+ /* first token on line is option name */
+ if (token != GUC_ID && token != GUC_QUALIFIED_ID)
+ goto parse_error;
+ opt_name = pstrdup(yytext);
+
+ /* next we have an optional equal sign; discard if present */
+ token = yylex();
+ if (token == GUC_EQUALS)
+ token = yylex();
+
+ /* now we must have the option value */
+ if (token != GUC_ID &&
+ token != GUC_STRING &&
+ token != GUC_INTEGER &&
+ token != GUC_REAL &&
+ token != GUC_UNQUOTED_STRING)
+ goto parse_error;
+ if (token == GUC_STRING) /* strip quotes and escapes */
+ opt_value = GUC_scanstr(yytext);
+ else
+ opt_value = pstrdup(yytext);
+
+ /* now we'd like an end of line, or possibly EOF */
+ token = yylex();
+ if (token != GUC_EOL)
+ {
+ if (token != 0)
+ goto parse_error;
+ /* treat EOF like \n for line numbering purposes, cf bug 4752 */
+ ConfigFileLineno++;
+ }
+
+ /* OK, process the option name and value */
+ if (guc_name_compare(opt_name, "include_dir") == 0)
+ {
+ /*
+ * An include_dir directive isn't a variable and should be
+ * processed immediately.
+ */
+ if (!ParseConfigDirectory(opt_value,
+ config_file, ConfigFileLineno - 1,
+ depth + 1, elevel,
+ head_p, tail_p))
+ OK = false;
+ yy_switch_to_buffer(lex_buffer);
+ pfree(opt_name);
+ pfree(opt_value);
+ }
+ else if (guc_name_compare(opt_name, "include_if_exists") == 0)
+ {
+ /*
+ * An include_if_exists directive isn't a variable and should be
+ * processed immediately.
+ */
+ if (!ParseConfigFile(opt_value, false,
+ config_file, ConfigFileLineno - 1,
+ depth + 1, elevel,
+ head_p, tail_p))
+ OK = false;
+ yy_switch_to_buffer(lex_buffer);
+ pfree(opt_name);
+ pfree(opt_value);
+ }
+ else if (guc_name_compare(opt_name, "include") == 0)
+ {
+ /*
+ * An include directive isn't a variable and should be processed
+ * immediately.
+ */
+ if (!ParseConfigFile(opt_value, true,
+ config_file, ConfigFileLineno - 1,
+ depth + 1, elevel,
+ head_p, tail_p))
+ OK = false;
+ yy_switch_to_buffer(lex_buffer);
+ pfree(opt_name);
+ pfree(opt_value);
+ }
+ else
+ {
+ /* ordinary variable, append to list */
+ item = palloc(sizeof *item);
+ item->name = opt_name;
+ item->value = opt_value;
+ item->errmsg = NULL;
+ item->filename = pstrdup(config_file);
+ item->sourceline = ConfigFileLineno - 1;
+ item->ignore = false;
+ item->applied = false;
+ item->next = NULL;
+ if (*head_p == NULL)
+ *head_p = item;
+ else
+ (*tail_p)->next = item;
+ *tail_p = item;
+ }
+
+ /* break out of loop if read EOF, else loop for next line */
+ if (token == 0)
+ break;
+ continue;
+
+parse_error:
+ /* release storage if we allocated any on this line */
+ if (opt_name)
+ pfree(opt_name);
+ if (opt_value)
+ pfree(opt_value);
+
+ /* report the error */
+ if (token == GUC_EOL || token == 0)
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("syntax error in file \"%s\" line %u, near end of line",
+ config_file, ConfigFileLineno - 1)));
+ record_config_file_error("syntax error",
+ config_file, ConfigFileLineno - 1,
+ head_p, tail_p);
+ }
+ else
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("syntax error in file \"%s\" line %u, near token \"%s\"",
+ config_file, ConfigFileLineno, yytext)));
+ record_config_file_error("syntax error",
+ config_file, ConfigFileLineno,
+ head_p, tail_p);
+ }
+ OK = false;
+ errorcount++;
+
+ /*
+ * To avoid producing too much noise when fed a totally bogus file,
+ * give up after 100 syntax errors per file (an arbitrary number).
+ * Also, if we're only logging the errors at DEBUG level anyway, might
+ * as well give up immediately. (This prevents postmaster children
+ * from bloating the logs with duplicate complaints.)
+ */
+ if (errorcount >= 100 || elevel <= DEBUG1)
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+ errmsg("too many syntax errors found, abandoning file \"%s\"",
+ config_file)));
+ break;
+ }
+
+ /* resync to next end-of-line or EOF */
+ while (token != GUC_EOL && token != 0)
+ token = yylex();
+ /* break out of loop on EOF */
+ if (token == 0)
+ break;
+ }
+
+cleanup:
+ yy_delete_buffer(lex_buffer);
+ /* Each recursion level must save and restore these static variables. */
+ ConfigFileLineno = save_ConfigFileLineno;
+ GUC_flex_fatal_jmp = save_GUC_flex_fatal_jmp;
+ return OK;
+}
+
+/*
+ * Read and parse all config files in a subdirectory in alphabetical order
+ *
+ * includedir is the absolute or relative path to the subdirectory to scan.
+ *
+ * calling_file/calling_lineno identify the source of the request.
+ * Pass NULL/0 if not recursing from an inclusion request.
+ *
+ * See ParseConfigFp for further details.
+ */
+bool
+ParseConfigDirectory(const char *includedir,
+ const char *calling_file, int calling_lineno,
+ int depth, int elevel,
+ ConfigVariable **head_p,
+ ConfigVariable **tail_p)
+{
+ char *directory;
+ DIR *d;
+ struct dirent *de;
+ char **filenames;
+ int num_filenames;
+ int size_filenames;
+ bool status;
+
+ /*
+ * Reject directory name that is all-blank (including empty), as that
+ * leads to confusion --- we'd read the containing directory, typically
+ * resulting in recursive inclusion of the same file(s).
+ */
+ if (strspn(includedir, " \t\r\n") == strlen(includedir))
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("empty configuration directory name: \"%s\"",
+ includedir)));
+ record_config_file_error("empty configuration directory name",
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ return false;
+ }
+
+ /*
+ * We don't check for recursion or too-deep nesting depth here; the
+ * subsequent calls to ParseConfigFile will take care of that.
+ */
+
+ directory = AbsoluteConfigLocation(includedir, calling_file);
+ d = AllocateDir(directory);
+ if (d == NULL)
+ {
+ ereport(elevel,
+ (errcode_for_file_access(),
+ errmsg("could not open configuration directory \"%s\": %m",
+ directory)));
+ record_config_file_error(psprintf("could not open directory \"%s\"",
+ directory),
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ status = false;
+ goto cleanup;
+ }
+
+ /*
+ * Read the directory and put the filenames in an array, so we can sort
+ * them prior to processing the contents.
+ */
+ size_filenames = 32;
+ filenames = (char **) palloc(size_filenames * sizeof(char *));
+ num_filenames = 0;
+
+ while ((de = ReadDir(d, directory)) != NULL)
+ {
+ struct stat st;
+ char filename[MAXPGPATH];
+
+ /*
+ * Only parse files with names ending in ".conf". Explicitly reject
+ * files starting with ".". This excludes things like "." and "..",
+ * as well as typical hidden files, backup files, and editor debris.
+ */
+ if (strlen(de->d_name) < 6)
+ continue;
+ if (de->d_name[0] == '.')
+ continue;
+ if (strcmp(de->d_name + strlen(de->d_name) - 5, ".conf") != 0)
+ continue;
+
+ join_path_components(filename, directory, de->d_name);
+ canonicalize_path(filename);
+ if (stat(filename, &st) == 0)
+ {
+ if (!S_ISDIR(st.st_mode))
+ {
+ /* Add file to array, increasing its size in blocks of 32 */
+ if (num_filenames >= size_filenames)
+ {
+ size_filenames += 32;
+ filenames = (char **) repalloc(filenames,
+ size_filenames * sizeof(char *));
+ }
+ filenames[num_filenames] = pstrdup(filename);
+ num_filenames++;
+ }
+ }
+ else
+ {
+ /*
+ * stat does not care about permissions, so the most likely reason
+ * a file can't be accessed now is if it was removed between the
+ * directory listing and now.
+ */
+ ereport(elevel,
+ (errcode_for_file_access(),
+ errmsg("could not stat file \"%s\": %m",
+ filename)));
+ record_config_file_error(psprintf("could not stat file \"%s\"",
+ filename),
+ calling_file, calling_lineno,
+ head_p, tail_p);
+ status = false;
+ goto cleanup;
+ }
+ }
+
+ if (num_filenames > 0)
+ {
+ int i;
+
+ qsort(filenames, num_filenames, sizeof(char *), pg_qsort_strcmp);
+ for (i = 0; i < num_filenames; i++)
+ {
+ if (!ParseConfigFile(filenames[i], true,
+ calling_file, calling_lineno,
+ depth, elevel,
+ head_p, tail_p))
+ {
+ status = false;
+ goto cleanup;
+ }
+ }
+ }
+ status = true;
+
+cleanup:
+ if (d)
+ FreeDir(d);
+ pfree(directory);
+ return status;
+}
+
+/*
+ * Free a list of ConfigVariables, including the names and the values
+ */
+void
+FreeConfigVariables(ConfigVariable *list)
+{
+ ConfigVariable *item;
+
+ item = list;
+ while (item)
+ {
+ ConfigVariable *next = item->next;
+
+ FreeConfigVariable(item);
+ item = next;
+ }
+}
+
+/*
+ * Free a single ConfigVariable
+ */
+static void
+FreeConfigVariable(ConfigVariable *item)
+{
+ if (item->name)
+ pfree(item->name);
+ if (item->value)
+ pfree(item->value);
+ if (item->errmsg)
+ pfree(item->errmsg);
+ if (item->filename)
+ pfree(item->filename);
+ pfree(item);
+}
+
+
+/*
+ * scanstr
+ *
+ * Strip the quotes surrounding the given string, and collapse any embedded
+ * '' sequences and backslash escapes.
+ *
+ * the string returned is palloc'd and should eventually be pfree'd by the
+ * caller.
+ */
+static char *
+GUC_scanstr(const char *s)
+{
+ char *newStr;
+ int len,
+ i,
+ j;
+
+ Assert(s != NULL && s[0] == '\'');
+ len = strlen(s);
+ Assert(len >= 2);
+ Assert(s[len - 1] == '\'');
+
+ /* Skip the leading quote; we'll handle the trailing quote below */
+ s++, len--;
+
+ /* Since len still includes trailing quote, this is enough space */
+ newStr = palloc(len);
+
+ for (i = 0, j = 0; i < len; i++)
+ {
+ if (s[i] == '\\')
+ {
+ i++;
+ switch (s[i])
+ {
+ case 'b':
+ newStr[j] = '\b';
+ break;
+ case 'f':
+ newStr[j] = '\f';
+ break;
+ case 'n':
+ newStr[j] = '\n';
+ break;
+ case 'r':
+ newStr[j] = '\r';
+ break;
+ case 't':
+ newStr[j] = '\t';
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ {
+ int k;
+ long octVal = 0;
+
+ for (k = 0;
+ s[i + k] >= '0' && s[i + k] <= '7' && k < 3;
+ k++)
+ octVal = (octVal << 3) + (s[i + k] - '0');
+ i += k - 1;
+ newStr[j] = ((char) octVal);
+ }
+ break;
+ default:
+ newStr[j] = s[i];
+ break;
+ } /* switch */
+ }
+ else if (s[i] == '\'' && s[i + 1] == '\'')
+ {
+ /* doubled quote becomes just one quote */
+ newStr[j] = s[++i];
+ }
+ else
+ newStr[j] = s[i];
+ j++;
+ }
+
+ /* We copied the ending quote to newStr, so replace with \0 */
+ Assert(j > 0 && j <= len);
+ newStr[--j] = '\0';
+
+ return newStr;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-26 14:24:03 +0000