85 lines
1.4 KiB
C
85 lines
1.4 KiB
C
/* This module defines the parse buffer and routines for setting/reading it */
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#include "postgres.h"
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#include "utils/elog.h"
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static char *PARSE_BUFFER;
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static char *PARSE_BUFFER_PTR;
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static unsigned int PARSE_BUFFER_SIZE;
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static unsigned int SCANNER_POS;
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void set_parse_buffer(char *s);
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void reset_parse_buffer(void);
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int read_parse_buffer(void);
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char *parse_buffer(void);
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char *parse_buffer_ptr(void);
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unsigned int parse_buffer_curr_char(void);
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unsigned int parse_buffer_size(void);
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unsigned int parse_buffer_pos(void);
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extern void cube_flush_scanner_buffer(void); /* defined in cubescan.l */
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void
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set_parse_buffer(char *s)
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{
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PARSE_BUFFER = s;
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PARSE_BUFFER_SIZE = strlen(s);
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if (PARSE_BUFFER_SIZE == 0)
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elog(ERROR, "cube_in: can't parse an empty string");
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PARSE_BUFFER_PTR = PARSE_BUFFER;
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SCANNER_POS = 0;
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}
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void
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reset_parse_buffer(void)
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{
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PARSE_BUFFER_PTR = PARSE_BUFFER;
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SCANNER_POS = 0;
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cube_flush_scanner_buffer();
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}
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int
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read_parse_buffer(void)
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{
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int c;
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/*
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* c = *PARSE_BUFFER_PTR++; SCANNER_POS++;
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*/
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c = PARSE_BUFFER[SCANNER_POS];
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if (SCANNER_POS < PARSE_BUFFER_SIZE)
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SCANNER_POS++;
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return c;
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}
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char *
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parse_buffer(void)
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{
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return PARSE_BUFFER;
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}
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unsigned int
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parse_buffer_curr_char(void)
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{
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return PARSE_BUFFER[SCANNER_POS];
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}
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char *
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parse_buffer_ptr(void)
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{
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return PARSE_BUFFER_PTR;
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}
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unsigned int
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parse_buffer_pos(void)
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{
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return SCANNER_POS;
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}
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unsigned int
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parse_buffer_size(void)
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{
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return PARSE_BUFFER_SIZE;
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}
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